Patent Application
20240235002
Industrial Internet of Things (IIoT) is rapidly developing to provide ease of connected instrumentation for monitoring and control of legacy applications and those that have historically been challenging to access. The density and mobility of instrumentation, application type, differences in regulations, data security, sensitivity and sovereignty, and cost-value trade-offs are among the factors that drive the need for a variety of sensing, actuation, and connectivity protocols. The cost of field sensors and sensor network infrastructure present significant barriers to adoption of IIoT solutions.
Growing IIoT protocol availability, small size, and local power (e.g., an internal battery, energy harvesting from ambient environment, or a closely connected energy solution) is creating opportunities for creative sensing solutions that do not exist today due to the cost of making the measurement and transporting the data.
A modular industrial transmitter includes a communication module and a sensor module. The communication module is configured to communicate with a remote device and has a common interface configured to couple to a plurality of different types of sensor modules. The sensor module is coupled to the common interface of the communication module. Physical coupling of the communication module to the sensor module is performed tool-lessly.
This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. The claimed subject matter is not limited to implementations that solve any or all disadvantages noted in the Background.
Industrial Internet of Things (IIoT) adoption is rapidly increasing, creating opportunities for a new class of easy-to-use connected measurement and control instrumentation. These opportunities exist for both legacy measurement applications and for new asset optimization and health monitoring that will help end users run their operations in more efficient, reliable, sustainable, and environmentally friendly ways. To satisfy the diverse demands of IIoT users, a variety of measurement, control and connectivity solutions are needed depending on the application. To efficiently support a growing IIoT business and rapidly evolving end user requirements, a modular measurement and control platform approach is provided to adapt new communication modules easily and quickly to various transducers and actuators that share a common physical and electrical interface.
Using a modular approach, a variety of assemblies with a communication protocol output can be quickly attached to another variety of assemblies that perform an action relative to a process application, such as measurement or actuation. This scheme allows for improved design efficiency by developing fully approved and tested communication and sensor module components. The components can be combined in a number of ways to provide rapid transmitter solutions where users require a specific protocol to be available for a sensing technique.
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Discrete I/O module 114 is configured to couple to any of the communication modules 102, 104, 106, 108, and 110. Discrete I/O module 114 includes a number of discrete input or output channels. These channels may be digital, analog, or a combination thereof. As can be appreciated, when a communication module is coupled to discrete I/O module 114, communication with the assembly can allow a remote device to effect a change by causing a discrete analog and/or digital output on module 114. Similarly, individual signals such as digital signals or analog signals can be coupled to input channels of discrete I/O module 114 to allow a remote device to observe the status and/or magnitude of such signals.
Level module 116 is configured to couple to any of the communication modules 102, 104, 106, 108, and 110. Level module 116 is configured to measure a level of a product in a container or conduit. In one example, level module 116 is configured to transmit microwave energy into the container and receive a reflection back that is indicative of one or more interfaces occurring at detected distances from level module 116, where the detected distance(s) correspond to level of one or more products within the container.
Corrosion detection module 118 is configured to couple to any of the communication modules 102, 104, 106, 108, and 110. Corrosion detection module 118 is configured to detect corrosion of a structure or surface to which module 118 is coupled. In one example, corrosion detection module 118 is configured to mount to a pipe for which corrosion detection is desired and periodically, or on demand, perform a corrosion detection test using any suitable technique including launching an ultrasonic signal into the pipe and comparing the response with a response obtained from an initial, non-corroded state.
Pressure detection module 120 is configured to couple to any of the communication modules 102, 104, 106, 108, and 110. Pressure detection module 120 is configured to couple to a source of process fluid pressure (e.g., a pipe or conduit) and detect the pressure of the process fluid within the conduit. Pressure detection module 120 may include or be coupled to one or more pressure sensors that have an electrical characteristic (e.g., resistance or capacitance) that varies with applied pressure. Additionally, pressure detection module 120 may include a plurality of pressure sensors where each pressure sensor is fluidically coupled to an opposite side of a flow restriction in the process fluid conduit. In this way, pressure detection module 120 may also provide an indication of process fluid flow based on the difference in pressure detected across the flow restriction. In some examples, the pressure sensor may be a non-intrusive pressure sensor.
Gas detection module 122 is configured to couple to any of the communication modules 102, 104, 106, 108, and 110. Gas detection module 122 is configured to detect one or more gases of interest and provide an electrical indication thereof. Gas detection module includes one or more gas sensors that have an electrical signal or property that changes in response to exposure to a gas of interest, such as combustible, flammable and/or toxic gases. Gas sensors may include infrared point sensors, ultrasonic sensors, electrochemical gas sensors and semiconductor sensors.
In accordance with some embodiments described herein, the individual modules are separately subject to an approvals process and approved for their respective industrial function such that an assembly of an approved communication module and approved measurement/actuator module is also approved. An example of an important approval for industrial devices is: APPROVAL STANDARD INTRINSICALLY SAFE APPARATUS AND ASSOCIATED APPARATUS FOR USE IN CLASS 1, 11 and III, DIVISION NUMBER 1 HAZARDOUS (CLASSIFIED) LOCATIONS, CLASS NUMBER 3610, promulgated by Factory Mutual Research October, 1998. Another example of an important approval for industrial devices is an ATEX certification to Ex-d standards EN60079-0 and EN60079-1 for potentially explosive atmospheres.
Interface 206 generally supports the exchange of duty cycle and task timing information between the sensor module and the communication module to allow for a variety of sensing and/or actuation applications that require different lengths of time to stabilize and/or execute.
Generally, communication module 202 is the primary controller of all functions that relate to the output protocol and configuration porting. Communication module 202 includes power module 214. In one embodiment, power module 214 includes a local power source, such as an internal battery (fixed or rechargeable) and suitable regulation circuitry to provide power to other components of communication module 202. In one embodiment, power module 214 includes an intrinsically-safe power source that can be installed in a volatile ambient environment. In other embodiments, power module 214 may simply contain suitable power regulation circuitry to suitably condition power received from power module port 216 for provision to other components of communication module 202. Power may be provided to power module port 216 from an external source such as an external thermoelectric generator; vibrational power scavenger; wind generator; solar cell, et cetera. Additionally, power module 214 may include circuitry to monitor power levels on any external power sources to determine when to charge an internal storage, such as a rechargeable battery or capacitor, and when to use power directly from the external power source or internal storage.
Communication module 202 also includes controller 218 coupled to power module 214, protocol/output circuitry 219, and optional local interface 220 and GPS module 222. Controller 218 is also coupled to timing/control connections 210 and digital communication connections 212 which allow controller 218 to interact with controller 224 of sensor module 204. Controller 218 may be any suitable circuitry that is able to execute a number of programmatic steps or functions to interact with sensor module 204 and communicate with an external device using protocol/output circuitry 219. Controller 218 may be an application specific integrated circuit (ASIC), field programmable gate array (FPGA), microcontroller, or microprocessor. Controller 218 is configured, through hardware, software, or a combination thereof, to detect the coupling of a sensor module via interface 206 and interact with a connected sensor module to determine the capabilities and/or requirements of the connected sensor module and choose appropriate communication for the connected sensor module (e.g., selecting appropriate units/range/precision et cetera). Thus, controller 218 is configured to authenticate the connected sensor module, recognize approved combinations, and link with sensor module 204 to form the transmitter solution Once communication module 202 has identified the connected sensor module 204 and modified its operation for the connected sensor module, a complete transmitter solution is complete. An indication of this status can be provided by communicating via the protocol/output circuitry, engaging a local indicator, such as an LED, or both.
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In some embodiments, communication module 202 may include local interface logic 220 that is coupled to controller 218 and facilitates local interaction with communication module 202. In some examples, this may include a local display such as an LCD or LED display, one or more status LEDs, and/or one or more operator inputs, such as a button or knob. The status LEDs can be used to provide a simple visual indication of certain device status information including, without limitation, battery health, sensor assembly health, communication module health, sensor connection status/health, network connection status/health, et cetera. Additionally, the status LED(s) can be in the form of multicolor LEDs such that a certain color is indicative of a certain condition. Additionally, or alternatively, the status LED(s) can flash in accordance with pre-defined flash codes in order to convey various messages or conditions.
In other examples, the local interface logic 220 is coupled to maintenance port 227 which allows a local user to configure and calibrate both communication module 202 and sensor module 204. Maintenance port 227 can employ a wired connection and/or a wireless connection to a handheld communicator. In examples where the connection from maintenance port 227 the handheld communicator is wireless, such communication can be Bluetooth or Near Field Communication (NFC). Additionally, local interface logic 220 may provide one or more of its functions via an internal webserver that interacts with an external device, such as a handheld communicator or smartphone, via maintenance port 227.
Sensor module 204 is generally the primary controller for all functions related to sensor measurement and processing of the output value(s). Sensor module 204 will require time for task completion (i.e., obtaining a measurement from a sensor and processing the measurement). Additional time could be required for sensors needing multiple measurements or longer voltage stabilization to produce a valid measurement. Since sensor module is aware (e.g., during manufacture of a particular sensor module it is known what type of sensor will be coupled to the sensor module and how many measurements and how much voltage stabilization is required) of its task time requirements, a latency management scheme is employed by sensor module controller 224 to allow for task completion for a variety of sensor modules. Sensor module 204 can preemptively wake up to prepare and complete its appropriate task before communication module 202 requests an update.
Sensor module 204 includes power management circuitry 228 that is coupled to power connections 208 and provides regulated power to components of sensor module 204. Power management circuitry 228 may also include one or more direct connection lines that can be used in specific sensor module implementations. The direct connection can be used for sensor modules with higher power demands or specific voltage regulation needs. Additionally, power management circuitry 228 can also provide voltage monitoring for battery-operated assemblies during sensor module activities.
Sensor module 204 also includes protocol conversion circuitry 230 coupled to controller 224. Protocol conversion circuitry 230 is configured to allow adaptation of sensors with digital outputs, such as Modbus to interface with communications module 202. As shown, protocol conversion module is coupled to one or more sensor ports 232 to receive such digital sensor output(s). In some process actuation embodiments, protocol conversion circuitry may include one or more digital-to-analog converters that enable controller 224 to generate an analog output voltage or signal. Additionally, or alternatively, protocol conversion circuitry 230 may include suitable switches to generate one or more digital outputs.
Sensor module 204 also includes measurement processing circuitry 234 coupled to sensor port(s) 232 and controller 224. Measurement processing circuitry 234 includes suitable circuitry for measuring an analog electrical characteristic (e.g., resistance, voltage, current, et cetera) and providing a digital indication of the measured analog electrical characteristic to controller 224. Suitable examples of circuitry of measurement processing circuitry includes one or more analog-to-digital converters, one or more amplifiers, and or one or more multiplexers or switches. As such, measurement processing circuitry 234 provides generic sensing of one or more discrete signals to indicate state of an external interface. Further, measurement processing circuitry 234 provides generic sensing of current and/or voltage for any number of applications such as battery monitoring and diagnostic calculations of external power banks. Any suitable type of sensor can be coupled to sensor port(s) 232 including, without limitation, temperature sensors, pressure sensors, level sensors, corrosion sensors, gas detection sensors, or any combination thereof.
Sensor module 204 can, in some cases, be a legacy wired or wireless process variable transmitter with a digital port to interact with communication module 202. The legacy transmitter (i.e., sensor module) may continue to participate on its intended communication port, but also with the connected communication module 202. For example, a HART/4-20 mA process variable transmitter can continue to produce a wired HART/4-20 mA output, but also provide data to communication module 202 with a different output protocol.
While embodiments described above generally couple a single sensor module with a single communication module, it is expressly contemplated that a single sensor module may be coupled to a plurality of different communication modules. In such case, the single sensor module can provide a measurement to multiple communication modules to provide an output through a number of communication paths. For example, a sensor module can interact with a WirelessHART communication module for local clustering and also interact with a Cellular communication module for distance monitoring. Another example is providing a data point into two or more WirelessHART networks through one transmitter solution. Additionally, it is expressly contemplated that sensor module 204 may aggregate multiple measurements to a single communication module 202.
The common interface employed in accordance with embodiments described herein can take various forms. In one example, the interface includes a tool-less, poka-yoke mechanical and electrical interface between the communication module and the sensor module. Additionally, the common interface can include a keying feature such that the communication module may only be coupled to the sensor module in a single rotational orientation. Additionally, the common interface can include one or more snap features that allow the modules to mechanically snap together. Preferably, the communication module and the sensor module can be coupled together electrically and mechanically without requiring any tools. The power module may also be held securely within the communication module with one or more snap features or another suitable simple retention mechanism that does not require any tools for battery replacement. The mechanical design of the interface helps ensure that only compatible, authentic communication and sensor modules may be coupled together. This tool-less and modular approach allows for easy installation, quick battery replacement and/or quick and easy electronics access without needing to remove the sensing module.
While the various chassis components of the communication module and/or sensor module can be constructed from any suitable materials, it is preferred that the chassis of the communication module be formed of a polymeric material. Additionally, it is preferred that the chassis of the sensor module be formed of a material robust enough to be mounted to a process and contain or be coupled to a sensor. In some examples, the chassis of sensor module 404 may be formed of a metal. In some examples, it is also preferred that the polymeric chassis of the communication module include one or more features, such as snap features, that engage with corresponding features of the sensor module to allow for simple, tool-less coupling of the communication module to the sensor module. It is preferred that the snap features maintain both mechanical and electrical contact between the communication module and the sensor module.
When it is necessary to change the power module of communication module 502, power module 516 may simply be slid out from polymeric chassis 530 and a new power module 516 can be slid into chassis in the direction of arrow 550. When the replacement power module is coupled to polymeric chassis 530 and communication module 502 is coupled to sensor module 504, cover 522 is installed by threading cover 522 onto external threads 552 of sensor module 504.
The various embodiments of the present disclosure may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.
Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention. In various aspects, an assembly, interface, communication module, sensor module, maintenance port and status indications are provided for use with modular assemblies.
The present application is based on and claims the benefit of U.S. Provisional Patent Application Ser. No. 63/418,111, filed Oct. 21, 2022, the content of which provisional application is hereby incorporated by reference in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| 20240136696 A1 | Apr 2024 | US |
| Number | Date | Country | |
|---|---|---|---|
| 63418111 | Oct 2022 | US |
