Patent Grant
12126678
The present invention relates to a modular electronic apparatus for distribution of RF communications signals and in particular satellite signals, and methods and software for operating the same.
It is common to provide electronic apparatus for distribution of RF signals, e.g. satellite communications or broadcast signals, and the like in modular form and received in a chassis, for instance to allow hot-swapping or upgrading of modules, or flexibility in how the chassis is provisioned for the end user. The modules may provide a wide range of functionality, for instance digital, analogue and/or RF signal processing equipment, switching, transmission/receiving equipment, etc. Often the chassis has slots for the modules to be inserted, mating to connectors in a backplane or midplane, which provides one or more connections for distributing data, control signals, power, etc between the modules and other elements in the chassis. Alternatively or additionally external interconnects can be used to make such connections. Often external connections, e.g. coaxial cables, are used to connect modules to create a signal path through the apparatus, from input to output, with each module providing different processing to the RF signal.
The chassis provides power, cooling, connectivity, user interface and management functions, and other services to the modules. These functions might be provided in modules themselves, allowing swapping or adding of power supply modules, cooling modules (e.g. fan or other air movement or cooling devices in separate modules or incorporated into the power supply modules), etc., or inbuilt to the chassis. The management module usually incorporates a CPU and provides connectivity to the chassis by which the user can manage and configure the chassis and modules. This may be built into the chassis or itself provided in a module (or plural modules to provide redundancy). In either case, the ways in which the apparatus may be configured is typically limited and controlled by the enclosure management module (as well as being defined by the physical layout of the chassis), i.e. the various combinations of modules and their interactions and the user interface to manage the modules.
While such arrangements may allow some upgrading of functionality by adding or swapping modules, typically the amount of flexibility in provisioning the chassis is designed for in advance. Any new modules that are not completely standalone, i.e. have some interoperability with the services provided by chassis and/or other modules, are constrained to work within the same operational parameters of the original chassis, and any flexibility provisioned for at that time, i.e. the capability is already built into the interface module/chassis, which normally assumes overall control for the chassis and so comprises the parameters for all possible modules and their functionality in order for them to reliable cooperate. Conceivably, firmware upgrades in the chassis or CPU/management modules may allow additional functionality to be introduced in modules at a later stage, but this is complicated to manage and still tends to be of limited use in practice. Reliability, Resilience and module performance may also be impacted. For instance, introducing a new module may stress the power supply or cooling capacity of the chassis, or lead to unacceptable levels vibration or noise, and lead to premature failure or degraded performance. The user typically has little visibility of these issues and so unable to best maintain and/or upgrade the enclosure in a timely manner. Usually, then, modular equipment provided in a chassis of this sort tends to have limited upgradability, scalability and adaptability, and so a limited service life, and entirely new systems must be introduced when it is desired to significantly change or upgrade functionality.
The present invention aims to provide an apparatus, in particular a chassis and modules, for such applications that address these deficiencies in known apparatus and allows increased flexibility, scalability and/or upgradability in how such systems can be provisioned and generally improve their performance, resilience and reliability.
According to a first aspect of the present invention there is provided modular electronic apparatus for distribution of RF communication signals, comprising:
Thus modules are aware of other modules in the chassis and can adapt their behaviour accordingly to provide services to another module or request services from another module. Thus, the “smart” modules can self organise, optimise themselves and coordinate their the way they interact preferably without a central intelligent controller overseeing all aspects of module operation and cooperation. An interface module may adapt its behaviour to allow access to a user interface generated by the module inserted into the enclosure, allowing its control by the user. The preferred embodiments the invention are based on intelligent interaction between multiple electronic devices forming a system or subsystems of electronics hardware, referred to as the habitat. The control mechanisms within this equipment, firmware or software, are regenerative, enabling new functions and new members (e.g. new modules with new functionality, or improved or modified existing functions) to facilitate evolution of the habitat, which adapts and evolves to the environment to optimise functionality and performance.
The result is apparatus capable of perpetual improvement of performance and extension of the life span. Intelligent interaction between the host (chassis) and the modules enables improved performance, functionality as well as prolonging the reliability of the equipment. This facilitates future proofing of capital investments.
Preferred embodiments provide in effect a distributed system of a collection of autonomous computing elements that appears to its users as a single coherent system controllable from a single interface, without any overarching control entity that must be preconfigured with details of all possible elements in the system. In other words, each is able to behave independently of each other to some degree, although clearly where there is no interaction, then there is less benefit in putting them into the same enclosure. In practice, modules are typically configured to achieve common goals, here providing functionality in a RF path to process RF signals, which are realized by configuration and by exchanging messages with each other. A module reacts to incoming messages, which are then processed and, in turn, leading to further communication through message passing among elements of the system.
A satellite teleport is an example of a suitable habitat where preferred embodiments can bring continuous improvements by adapting to changing requirements and evolving in size and performance. In such a smart and interactive arrangement of the apparatus, modularity facilitates growth of an intelligent electronic habitat and enables revitalisation of modules, chassis and HMI (Human Machine Interface) functions. In an embodiment the modules provides RF functionality being one or more of: amplifier, attenuator, RF filter, signal generator/source, switches, switch matrices, frequency converters, RF over Fibre modules, couplers & RF monitors, splitters & combiners, equalisers and slope compensation modules.
Messages between modules may be broadcast on a common bus. Thus, each module may listen to messages broadcast on the bus without point to point connections, and without them being specifically addressed or routed to them. This makes it easy to add new components to the system, without changing the network topology. Another advantage of a bus is that modules can listen to all communications send by other modules and so keep track of their status, fault conditions, etc. So the system is made highly adaptable via the dynamic communication messages module to module, and module to chassis, i.e. peer to peer communications rather than with a central controller as is typical in the prior art. Here, all modules are peers and none have higher priority in hierarchy of communications, i.e. there is not central module managing all other modules.
In an embodiment messages are propagated to at least a second chassis of the type claimed. Thus, the system may be expanded to cover plural chassis in a rack or location. A first chassis may thus configure/manage modules in other chassis via its interface module, and similarly modules in one chassis may request services from modules in another chassis. Typically services such as power supply or cooling will not transfer conveniently from one chassis to another, and the services are more likely to be RF signal processing services with the modules linked between chassis via external cabling to extend the signal path.
Distributed intelligence allows entire chassis enclosure to reconfigure itself on the fly and adapt to changing user settings/external events/modules being introduced/removed from the chassis, and to other modules reconfiguring themselves based on similar triggers. Negotiations are made between modules as to services provided and configuration, balancing what is possible, what is desirable, and possibly in conjunction with user priorities. Modules are autonomous and can be upgraded or replaced without effecting on-going functionality or traffic management. Modules are adaptable to the environment and signal and operational conditions. Unlike in the prior art, there is no central controlling entity. In preferred embodiments, control/self configuration is distributed with two modules negotiating services between them. A third module may in turn negotiate services with the first or second module. There may be multiple dependencies, i.e. first module interacts with second module to configure it, and the second module then interacts with a third module to configure it, and so on.
The modules contain extensive data, including house keeping information such as serial numbers, and the operational conditions that the module is subject to, e.g. max & min temperature, humidly, pressure and shock detection. The modules can react and adapt to these conditions.
The main part of the chassis (e.g. the habitat) can be configured to accommodate new modules. For example, a chassis with amplifiers can be configured to accommodate RF switches/switch matrices (RF routers). Thus, the chassis is not limited by what it was originally designed to do. In prior art systems, typically a controller is in control of the entire system, which limits how the functionality of the system can adapt over time. Here the control is peer to peer with no overarching controller. Modules can thus change their characteristics over time.
In an embodiment the chassis has a processing unit arranged to provide a user interface for the apparatus,
Thus, the user interface does not need to store definitions in advance about all possible module types, information and controls that relate to the modules receivable in the chassis. This information is provided by the modules themselves, and hence the user interface can adapt to completely new modules offering new functionality that was not contemplated originally, i.e. when the processing unit was originally configured. Thus, the processing unit, typically provided in an interface module or subsystem of the chassis, can provide a UI for any module without firmware or software updates. More specifically, the processing unit supports the UI, or provides UI services to the modules, which provide their own UI which can be served to the user via the services provided by the processing unit.
Preferably the user interface provides a landing page for the overall apparatus, showing status information for the overall chassis, from which subpages can be selected. Preferably the processing unit provides a security gateway to authenticate users and/or authorise access and actions taken with the modules.
In an embodiment when a module is received in a slot in the chassis, it registers with the processing unit and that module is shown and becomes selectable in the user interface generated by the processing unit, and when the user selects the module in the user interface, the processing unit requests the sub-user interface from that module and renders it in the user interface. Thus, an initial landing page can deliver details of which modules populate which slots in the chassis and provide selectable links that load the sub-user interface from the selected module, i.e. a webpage stored on the module.
In an embodiment the user interface comprises webpages, the processing unit provides a webserver arranged to serve at least one webpage associated with the chassis, and comprises a module web proxy server to request a website from modules registered with the processing unit to provide sub-user interfaces for those modules. The website associated with a module may comprise plural webpages that are individually requested by the processing unit. Preferably, the webserver shows a graphical representation showing the layout of modules registered in slots in the chassis, and user selectable links for the modules to cause the webserver to request a webpage from the respective module.
In an embodiment at least one module is arranged to perform peer control, whereby through a peer control channel, the module requests services from other modules registered in the chassis. Typically modules are preconfigured with the services they require from other modules in the chassis in various modes of their operation, e.g. power requirements, amplification of signals, etc, and can request these services via a broadcast message upon insertion/powerup in the module, or user configuration, or external or internal event which causes a change in the services required. Services may include, but not limited to switching, gain configuration, frequency configuration, power, and cooling.
In an embodiment at least one module is a shared resource, arranged to receive requests for that resource from other modules registered in the chassis, determine whether it has sufficient resources to meet that request, and if so, to supply the requested resource, or else to send a message indicating that the request cannot be met. Thus, modules may be configured to monitor incoming requests for services of a type they provide, as well as monitoring their ability to deliver that service given demands already made on that module and remaining resources, e.g. a power supply module may keep track of the cumulative demands made on its power supplying capabilities from other modules, when determining whether or not it can service a new or modified request. The result of the determination can be communicated to the user, either via the HMI or via an email or other message.
Power may be managed intelligently to ensure that it is distributed in line with operational protocols. Examples are:
In an embodiment the shared resource has plural operating modes in which the shared resource may be supplied, the module being arranged to change its mode of operation in order to satisfy a request for a resource. For example, a power supply module may change its level of redundancy such that more power is made available for supply to other modules, allowing a request for power from a newly inserted module or reconfigured module to be met. Similarly a cooling unit may switch on a spare redundant fan in response to a request for more cooling, or to increase fan speed.
In an embodiment the shared resource monitors the presence and status of other modules in the chassis, and is arranged to configure another module such that the request can be satisfied. Thus, chains of intelligent configuration between several modules may be implemented. For example, the power supply module may know from monitoring the presence and status of other modules in the chassis that another module is operating as a “hot redundant” module, i.e. powered on but inactive, and can send a message to this module reconfiguring it as “cold redundant”, i.e. powered off until needed, to reduce the power that must be supplied to this module, so freeing up more power to satisfy a request for power from another module. Alternatively another module may be powered off completely.
The decision on changing mode of operation in a module or another module may be balanced with other considerations local to that module or other modules, such as loss of redundancy, slower recovery from failure, decreased service life of accepting above optimum temperatures, decreased service life or increased noise in increasing fan levels, etc. Thus, the modules monitor their own operating conditions in order to decide whether or not it is beneficial to meet the request for a resource.
In an embodiment the module causes a message indicating to a change of configuration is communicated to the user. The user may be prompted to approve the new configuration before it takes effect.
In an embodiment the request for a shared resource is initiated by a module receiving a new user configuration via the user interface, or via detecting an event within the module, or a change in configuration in another module. The event may be excess temperature, giving rise to a request for additional cooling from a cooling module; signal degradation, giving rise to a request for amplification or signal smoothing from another module, etc.
In an embodiment at least one module is arranged to perform peer monitoring, whereby through a peer monitoring channel, modules can discover status and of other modules registered in the chassis upon which they may rely to achieve desired system configuration and/or performance.
In an embodiment a module changes its mode of operation in response to detecting a change in status of another module. For example, a module may reconfigure itself from hot to cold redundant in response to detecting that a power supply module has failed or degraded performance.
In an embodiment at least one module is arranged request and store configuration settings for at least one other module and to configure a redundant module or to a replacement module with those configuration settings in the event of failure of the primary module. Thus, modules can in effect learn and back up settings of other modules, such that if those other modules are replaced, the system can be automatically reconfigured without further user input.
In an embodiment the module storing the configuration settings is a redundancy switch, arranged to switch between the primary module and a redundant module in the event that it detects that the primary module has failed.
In an embodiment at least one configurable module suppling services to another peer module is a power supply, a cooling module, and/or a reference frequency generator.
In an embodiment at least one module has the capability of monitoring conditions can re-route signals to increase performance based on knowledge of other modules in the chassis. For instance, a module may monitor signal conditions, determine path is not optimum and route via a new path, different amplifiers and/or filters to dynamically improve signal conditions.
In an embodiment peer monitoring determines that another module is running an outdated software/firmware version, and causing a message to be sent to the user to indicate an update should be performed and/or limit protocol elements used based on compatibility across all modules. Thus, a “newer” module in the chassis may identify another module with “old” firmware. The user can be alerted and/or the newer module may provide a software update for other modules around it, giving the user the option to allow such an upgrade, thus enabling more advanced functionality. Also, the module may limit it its own functionality or cause other modules to limit their own functionality to a subset of possible functionality such that there is no mismatch between the old and new modules, i.e. the new modules do not try to request “new” functionality from the old module, which cannot understand the request because it is lacking the required protocol extensions/functionality. Software updates to the modules may change characteristics and behaviour of those modules.
In an embodiment a module monitors at least one metric indicative of its cumulative performance, and compares this against a threshold, and sends a message to an operator when the metric is close to or exceeds the threshold indicating that the service life of the module is approaching or past and the module should be replaced. Thus, the intelligent module analyses its operational life and communicates this to the operator via the HMI. Additionally or alternatively it may also be equipped with smart functions to prolong its life. For example, a fan may have m+n fans for cooling where m is the number required and n is the number of spare dormant fans. The n th fan could remain dormant, or be activated if any of the active fans display symptoms of sub standard operation, or if the chassis is equipped with modules where heat dissipation is such that an increase in cooling is selected for optimum performance. The system could intelligently choose which fan to make redundant based on various considerations, such as maximising the life span of the module, reducing the power requirement, etc. These principles can be extended to allocating operations between modules. In an embodiment, plural modules monitor at least one metric indicative of their respective current and/or cumulative operation/performance, wherein in response to a request for a resource, the modules cooperate to select one or more modules to provide that resource from those capable of providing that resource based on sharing the load equally among the modules or allocating the load to those modules identified as being least likely to fail based on the monitored performance data. Thus, it would be possible for smart modules, particularly those that include electro-mechanical components where life is determined by number of switching operations, to distribute operations in such a way that all elements of the system “wear” at a similar rate. It would be possible that smart modules with such self-monitoring algorithms would provide the ability for user configurations, requirements or routing paths with higher priority are assigned to modules determined algorithmically to have lower likelihood of failure.
According to a second aspect of the present invention, there is provided a chassis for modular electronic apparatus for distribution of RF communication signals, the chassis arranged to removably receive plural modules, at least some of which are arranged to receive and process RF communication signals,
According to a third aspect of the present invention, there is provided a module for modular electronic apparatus for distribution of RF communication signals, the module being receivable in a chassis arranged to removably receive plural modules, at least some of which are arranged to receive and process RF communication signals,
According to a fourth aspect of the present invention, there is provided a method of configuring modular electronic apparatus for distribution of RF communication signals, the method comprising:
It will be appreciated that any features expressed herein as being provided “in one example” or “in an embodiment” or as being “preferable” may be provided in combination with any one or more other such features together with any one or more of the aspects of the present invention. In particular, the extendible member, joining techniques and join testing system described in relation to one aspect may generally be applicable to the others. While aspects of the invention relate to RF signal processing apparatus, the principles described herein may apply to any apparatus that is provided in a modular form in a chassis where at least one module provides services to another module, and where the “smart” modules intelligently communicate to negotiate the services they require from and/or can provide to each other and so self organise without a central controller handling this task. Thus modules may relate to digital signal processing, analogue signal processing, RF signal processing, switching, amplification, computing or CPU modules, storage modules, etc or any combination, typically in combination with power supplies and/or cooling modules.
Embodiments of the present invention will now be described by way of example with reference to the accompanying drawings, in which:
Some or all of the modules 3 relate to a particular application or applications provided by the enclosure (named “application modules 16” herein). The modules may provide a range of functionality according to the application, which as discussed above, may take many forms, e.g. storage, computing equipment, analogue or RF signal processing equipment, etc. In the present example, the modules relate to RF distribution equipment for a wide range of applications in the RF chain. For instance, on satellite downlinks this may be between the Low Noise Block and the modem or receiver; and on satellite uplinks it may be between a modem and a BUC. Functions can include switches, reference signals, fibre optic converters, amplifiers, splitters/combiners, switch matrixes for redundancy and RF signal routing, etc. The modules receive one or more external signal process the signals in turn and output the processed signal, i.e. creating a signal path through the equipment. The modules may pass signals between themselves via external interconnects (not explicitly shown), e.g. coaxial cabling, or via internal links, e.g. dedicated links on the docking plane. The modules may have external interconnects for connecting to other enclosures with modules of the sort described herein, or other upstream or downstream devices. The modules may all have the same or similar functions, but equally may have a number of different functions. Other applications and functions are equally possible.
In the present example,
The system 1 further comprises one or more power supply (PSU) modules 12, which provide power to the other modules and enclosure generally. Cooling modules comprising fans to create a cooling airflow through the modules may also be provided, or cooling fans may be incorporated in the PSU modules, or cooling fans may be inbuilt to the chassis. These modules may be considered “support modules” as they provide generic services needed by the other modules. Nonetheless, these definitions are mainly for convenience, and it will be appreciated that Application Modules 16 may provide services to other Application Modules, as will be come apparent from the disclosure as a whole.
The system 1 also comprises one or more interface modules 11 (also referred to as a CPU module herein) comprising a CPU 111 which generally provides a Human Machine Interface (HMI) to the chassis and modules and potentially other chassis management functions. The system 1 also comprises an optional touchscreen display 14, one or more connectors, e.g. Ethernet ports 15, for external communications with the chassis via the interface module 11.
The chassis has one or more common busses 17 which provide a communications link between some or all items in the chassis as well as delivering power. In this case, the busses allow communications between all modules, apart from the touchscreen 14 and ethernet ports 15 which communicate directly with the CPU in the interface module 11 and may be incorporated within the same module as the CPU. As described below, the bus 17 play an important role in allowing modules to broadcast messages to other modules in the chassis. For instance, a CAN (Controller Area Network) bus or similar protocol may be used to propagate messages.
At least some of the modules 3 are removable/replaceable in their slots (although some may be fixed, e.g. interface module, PSU modules, cooling units may be built into the chassis) and preferably hot swappable to allow seamless replacement of failed units/upgrades, etc.
As show by
The interface module 11 also comprises a security gateway 24 to manage the security of all module accesses. The security gateway 24 may manage user credentials, authenticating and authorising users to take various actions, dual factor authentication, strong passwords, number of sign-in attempts, providing an encrypting link, etc.
The interface module 11 also comprises a web server 25 including, but not limited to any of: a “Full Website” for remote access 251, a “Condensed Website” 252 for use by the optional touchscreen display 14 where present, a module web proxy 253 which serves webpages generated by the modules to the full and condensed websites. The interface module 11 also comprises a Data Aggregator 26, which aggregates data received from preferably all modules in the chassis (including application modules, PSU, Frequency Reference Card). This data comprises, but is not limited to:
At start-up, i.e. the enclosure being powered up or a new module being inserted into the chassis or powered up, each module broadcasts “static” data over the bus such as Serial Number, Web Page Structure, which the interface module caches to avoid excessive traffic over the common bus 7.
Each module periodically sends data pertaining to its current operational status, which may include but not limited to fault conditions, performance parameters and the operational conditions that the module is subject to; e.g. max & min temperature, humidly, pressure and shock detection.
The module 3 includes storage in which it records a log 33 of all events the module has experienced. It also stores module information 34, which includes items such as hardware & software versions and module type. It also stores webpage templates 35, which defines the layout of the webpage or webpages for that module, including the controls & information exposed at each user level. As described, this information is sent to the interface module 11 by the cached module data server 32.1, stored in the data aggregator and used by the interface module webserver to render a webpage for that module. For example, certain information or settings may only be exposed to certain user levels, such as to higher Admin levels, and not to lower “User” levels. The module also stores module settings 36, which includes user control settings and the status of the module. This dynamic information is sent to the interface module 11 by the module data server 32 and stored in the data aggregator 26, and used to populate placeholders in the cached webpage template & status in rendering the webpage for that module.
The module 3 further comprises a peer control subsystem 37. Through this channel, modules 3 can request services from other modules 3 via messages broadcast on the common bus 17. Services may include, but not limited to switching, gain configuration, frequency configuration, power and cooling.
The module 3 further comprises a peer monitoring subsystem 38. Through this channel, via listening to messages broadcast on the common bus 17, modules can discover the status and capabilities of other modules in the system upon which they may rely to achieve desired system configuration and/or performance. The capabilities are broadcast by the modules as part of the static data, whereas real time module status is broadcast, either periodically or in response to events, as part of the dynamic data. Thus, this module listens for broadcast messages on the bus from other modules, e.g. a fault condition message, or a particular module is operating in a non-redundant mode, etc. as discussed further below in relation to specific examples. The module also has the capability of requesting information from other modules in the chassis, and so can obtain the necessary information about the other modules in this way.
A user can then communicate with the chassis 2 and any of the modules 3 as follows. The user sends a request to the interface module webserver 25 for a webpage via the Ethernet connection 31 to the chassis 2. The user authenticates as necessary with the security gateway by entering their credentials. Once, it has been established that the user is authorised, the webserver provides the requested webpage. Typically the first page is a “landing page” which gives general information on the enclosure, including but not limited to which modules populate which slots in the chassis, which the interface module has established via the registration messages sent by the modules when inserted. To interact with a particular module, the user selects a link or control associated with the appropriate module/slot in the webpage, which gives rise to a request to the module web proxy to render the webpage for that module via the data stored in the data aggregator. In particular, the previously cached web template is populated with cached static and dynamic data for the particular module. The webpage is served to the user by the webserver 25. This may appear in a separate screen, or a frame of the original webpage for instance. Thus, the user is presented with any relevant information concerning the module and its operation and performance. Additional module webpages for that module may be available and linked to. The user can interact with the controls in the module webpage, which gives rise to a request that is sent to the module via the module web proxy and results in the module configuring itself. For instance, the user may configure switches in the modules, gain settings, redundancies, etc.
Thus, for instance,
A similar process is used when the user accesses the enclosure via the touchscreen 22, except that typically a condensed website is served, e.g. webpages that are simplified or lower resolution, suitable for a smaller screen.
As described below, modules can automatically generate e-mails/electronic messages to inform end of life and service requirements. Examples are fan modules and PSUs which tend to have a limited life span due to moving parts.
The HMI provides active house keeping and monitoring of the environmental conditions in the chassis, e.g. through temperature sensors in the chassis, or in conjunction with the modules, via their sub-user interfaces, where they have this facility, e.g. some modules may have individual temperature sensors. Thus, the HMI provides cellular, interactive management tools enabling status control and checks of all activities within the habitat. Three level cellular interaction is provided in the example of
In
Thus, the system provides a distributed cloud of web servers within the modules, and so provides a resilient network and device management system. The chassis/interface (CPU) module 1,11 provides a habitat that is populated by modules 3 being introduced into the system 1 where the modules themselves provide the means for their management via the framework provided by the chassis/interface module 11. Unlike in prior art schemes, the interface module does not need to know anything beforehand about the modules it will be controlling/interfacing with. The modules themselves provide the HMI functionality needed to control/interface with them, and the interface module 11 provides a framework by which this functionality is made available to the user by providing a web proxy 25 to access the module webservers 32 based on the registration details, and serve this information to the user. The system is therefore highly versatile and future proofed and can provide a HMI for the user to interact with new modules without requiring firmware updates to the interface module to extend the HMI for the new module to work.
These principles of intelligence distributed among the modules 3 also extend to intelligent interaction between modules, e.g. between application modules and support modules, such as between the PSU modules and RF modules, or between RF modules, which can configure each other and provide services to each other, as will become clear from the following detailed examples.
Thus, modules 3 broadcast their status and types/capabilities to other modules on the bus 17, so that those modules can determine whether they need to reconfigure themselves in response to those messages. This may include requesting resources from those modules or configuring another module. Each module generally knows its own modes of operation and the resources it can supply to other modules, or needs to demand from other modules for each mode (e.g. power, cooling, signal amplification). Based on the demands made of that module, or its demands of others (for instance, occasioned by a user change in configuration or another event in the enclosure), it can determine which mode of operation may be implemented, control other modules to change their behaviour, or refuse demands and issue appropriate warnings and information to the user via the HMI.
Typically, then, each module implements an algorithm to determine its requirements, request those from other modules, and adjust its mode of operation as required in response to those requirements being met (fully, partially or not at all). Modules providing services/resources to other modules implement an algorithm to determine its mode of operation/configuration in accordance with its internal resources (e.g. power, cooling ability), the demands made by other modules and their current status/other possible modes of operation/configurations, and configures itself and/or other modules in accordance with the algorithm. Where various modes of operation are possible, giving flexibility in how the modules are configured, these may be prioritised, e.g. by a user at setup, such that the algorithm can determine the optimum mode given the overall configuration and status of the modules in the chassis. These algorithms operate continually, periodically or in response to events and changes in status in the chassis, so as to be able to automatically adapt in real time to prevailing conditions. Modules may assume master and slave assignments with each other in that they claim or relinquish control in configuring each other as required.
Preferably, these module functions, and interactions and configurations between modules operate without the interface module being involved in controlling the process, and indeed, the interface module may be removed from the enclosure entirely, i.e. where it is field serviceable or hot swappable, without disrupting the functioning of the other modules and their ability to interact.
In another example, shown by
The modules have a lexicon and protocols enabling them to interact via the messages and request services/configurations from other modules and learn and adapt to their status and configurations. However, the lexicon/protocol need not be the same across all modules, and may evolve over time. For instance, it might be that all modules need the lexicon/protocol for interacting with power supply modules, as power supply is likely a universal requirement across all modules. In contrast, a particular class of module may have the capability to interact with a second class of module to negotiate a particular service, but not at all with a third class of module. Thus, the particular class of module need not know the lexicon and protocols needed to communicate with the third class of module. In time, a fourth class of module may be introduced, or an upgraded module in the second class, which has expanded capabilities reflected in the lexicon/protocol, which the particular module may “learn” by way of a software or firmware update so that it can take advantage of the new capabilities. The second class of module would be entirely unaffected by this. So upgrades and new functionality may be introduced in a subset of modules, with other modules being unaffected, which greatly simplifies the upgrade path.
The concept is based on intelligent interaction between multiple electronic devices/modules forming a system or subsystems of electronics hardware, referred to herein as the “habitat”. The control mechanisms within this equipment, firmware or software are regenerative, enabling new functions and new members (e.g. new modules, this could be new functionality, improved or modified functions) to facilitate evolution of the habitat, which adapts and evolves to the environment to optimise functionality and performance. The result is perpetual improvement to performance and extension of the life span.
Knowing the type of module requesting the resource from the registration message, the shared resource can configure itself optimally, for example turning off unused paths, to meet the requests of the requesting modules in the enclosure.
At some later point, the user changes the module configuration (via the HMI as described above) in a way that would result in more power being drawn. The module checks with the PSU 12 that it is able to serve the additional power, and if PSU 12 reports that its available power is insufficient, the module declines the configuration request to the user.
Alternatively, the PSU 12 may be configured to operate in one or more redundancy modes, i.e. power is kept in reserve. In a nonredundant configuration, the power available to the system is the combined power capability of two or more power supplies. The system may power up as many modules as the combined capacity allows. However, if one power supply fails and there is not enough power for all of the previously powered-up modules, the system powers down those modules, based on a user pre-assigned priority—e.g. a module might be assigned as a backup or low priority, perhaps a hot spare becoming a cold spare. In a redundant configuration, the total power drawn from both power supplies is not greater than the capability of one power supply. If one supply malfunctions, the other supply can take over the entire system load. In normal operation, each concurrently provides approximately half of the required power to the system. Thus, a configuration request that requires more power than can be supplied in redundancy mode, may prompt an alert to the user that the system will proceed in a non-redundant mode or give the user the option to proceed or nor. it is also possible that external conditions change the power being drawn from a unit such that the available power from a single PSU is exceeded. In this case, the user is warned that they are running without redundancy.
In other examples, more than one module of a particular type, e.g. power supply modules 12, may be present in the module, in which case they may be configured to collaborate to pool their collective resources in supplying power to modules in the chassis, and may configure themselves and other modules as appropriate.
At some later point during the operation of the enclosure, Fan 2 fails (it has sensed that one of its fans has slowed). Fan 2 broadcasts a message to other modules that it has failed. Fan 1, on receiving the failure message starts up, and whilst it may not be the optimal fan, in that it is not closest to the module that requested the cooling, it will improve unit temperature performance until fan 2 is replaced.
In other examples, a fan may be turned on by another module to increase its performance, or reliability. Alternatively the decision can be made to turn off the requesting module, rather than turn on a fan. Complex protocols are implemented to govern the various trade offs to achieve some defined goal.
Another scheme of redundancy is cold redundancy where the spare module is not powered up. The dormant spare is switched on only if the need arises. The disadvantage here is the warm-up time which could be as long as a minute, on the other hand the dormant module remains unused prolonging its life expectation much beyond the option of having it hot (powered) spare.
The RF modules periodically send their status to the switch. This might be in the form of a “heartbeat”, the absence of which indicates to the switch that the RF module has failed. If the status indicates that RF module 1 has developed a fault or failed, the switch in response enables the reserve path to the RF module 2. RF module 2 has been configured with suitable settings already by the switch and can seamlessly assume the function of the failed module, or RF module 2 can be configured at that point. The interface module also detects from the broadcast message that RF module 1 has failed, and causes a suitable alert to be sent to the user via the HMI that a failure has occurred.
RF module 2 assuming the function of the failed module may in turn lead to RF module 2 requesting services from other modules to permit it to do so. For instance, in response to being made active, the RF module 2 may request the frequency reference module to supply it with a particular reference frequency as derived from the configuration settings supplied by the switch. Thus, there may be a sequence of modules configuring other modules.
At some future point, the user replaces the failed RF module 1. Replacement is hot swap. That is, it takes pace whilst the chassis and all its modules remains powered up and operational, without any interruption to its live traffic through the modules. The replacement module broadcasts its presence in the chassis as before, alerting the other modules to its presence. In response, the switch downloads the parameters of the failed RF module to its replacement and switches the path back to the this module. RF module 2 resumes its role as a reserve module.
When it has been determined that the service parameter is approaching the water mark, a warning is issued to the user. Optionally, the CPU/interface module may populate an email to allow the replacement part to be ordered with minimal user intervention. This can be blocked by the system administrator if desired. Assuming no action has been taken by the user, when the service parameter exceeds the watermark, the module escalates the predictive maintenance request to an alarm that the module is overdue for replacement. Once replacement has been made, the new module registers itself with the system.
The system may also extend to chassis to chassis communication or rack to rack communication, allowing modules to request services from modules in other chassis which have been connected together. Returning to
Embodiments of the present invention have been described with particular reference to the examples illustrated. However, it will be appreciated that variations and modifications may be made to the examples described within the scope of the present claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2102877 | Mar 2021 | GB | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2022/055019 | 2/28/2022 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2022/184658 | 9/9/2022 | WO | A |
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| Number | Date | Country |
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| 3482570 | May 2019 | EP |
| 2604345 | Mar 2023 | GB |
| 2605093 | Mar 2023 | GB |
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| Number | Date | Country | |
|---|---|---|---|
| 20240037050 A1 | Feb 2024 | US |
