Patent Application
20080126016
Test and measurement devices generally include a sensor terminated with a connector. The connector is in turn connected to another connector or an instrument by wire, fiber optic, or other hardwired connection. In a measurement or control application utilizing multiple sensors, organizing and attaching the various hardwired connections may be tedious and subject to error. The extent that a particular characteristic may be measured or controlled may be limited by the length or number of required connections.
It would be advantageous to be able to utilize multiple sensors without the drawbacks of multiple hardwired connections.
In one embodiment, a connector includes circuitry for processing a signal and a transmitter for transmitting the processed signal.
In another embodiment, a connector includes a sensor for providing a signal, circuitry for processing the signal, and a transmitter for transmitting the processed signal.
A further embodiment includes a connector system having a first connector with circuitry for processing a signal and a transmitter for transmitting the processed signal, and a second connector having a receiver for receiving the transmitted signal.
Yet another embodiment provides a system for test and measurement including a connector including circuitry for processing a signal and a transmitter for transmitting the processed signal, and an instrument including a receiver for receiving the transmitted signal.
The foregoing aspects and other features of the presently disclosed embodiments are explained in the following description, taken in connection with the accompanying drawings, wherein:
The connector 100 generally includes circuitry for processing a signal and a transmitter for transmitting the processed signal.
In
Base 105 may have an encircling wall 128 which may be cut away (not shown) at a right-hand end 130 to permit connection of a sensor to appropriate contacts 132 mounted on respective terminal posts 134 secured on the base 105.
Processing circuitry 136 may also be optionally provided within connector 100. Processing circuitry 136 may be implemented using hardware components, one or more processors running one or more programs, or a combination of both and may be re-programmable to perform any suitable processing operations.
Communication circuitry 138 may also be included within connector 100 for transmitting signals provided by the sensor or signals output by the processing circuitry 136. In one embodiment, communication circuitry 138 may be capable only of transmitting signals. In another embodiment, communication circuitry 138 may include transceiver circuitry capable of two-way communication, that is, both transmitting information and receiving information. Communication circuitry 138 may be capable of receiving commands from a remote device and optionally in combination with processing circuitry 136 performing the received commands or operations based on the received commands. Communication circuitry 138 may also alter processing or communication operations based on the received commands. In addition, communication circuitry 138 optionally in combination with processing circuitry 136 may be capable of transmitting commands for controlling another device communicating with connector 100.
Communication circuitry 138 may provide wireless communication using any of a variety of different physical and protocol layer communication methods. For example, the communication technology may include optical, infrared, radio transmission, RFID, or any other suitable communication technology, and may incorporate IrDA, IEEE 802.11, 802.15, Bluetooth, PCS or any other suitable communication method or standard. The ZigBee™ standard, based on IEEE 802.15 may also be utilized because of its low power requirements, built in recognition capabilities, high reliability and relatively small packaging size. In an exemplary embodiment communication circuitry 138 may be a ZigBee end device. In other exemplary embodiments communication circuitry 138 may be a ZigBee coordinator or a ZigBee router.
In one embodiment, processing circuitry 136 and communication circuitry 138 may be combined together as a single module.
Connector 100 may also have a power supply 140 that may include one or more batteries for providing power to processing circuitry 136, communication circuitry 138, the sensor, or any other function requiring power.
An optional emitting device 145 may be connected to communication circuitry 138 to extend the range of communication. Emitting device 145 may extend from connector 100 as shown or may be enclosed by connector 100. In some embodiments, emitting device 145 may be for example, an antenna, an optical emitter, or any other suitable emitting device. The connector 100 also may optionally have various indicators and controls such as a battery status indicator 150, a transmit/receive indicator 155, an on/off switch 160, adjustable components and additional switches 165 for calibration and for controlling the processing circuitry 136, communication circuitry 138, and a display 170.
In exemplary embodiments, when assembled, connector 100 may have a form factor similar to a standard, standard ceramic, miniature, or miniature ceramic thermocouple connector body. While processing circuitry 136, communication circuitry 138, emitting device 145, the various indicators and controls, and power supply 140 are shown as having a particular size and shape, it should be understood that they may have any suitable size and shape, may be miniaturized, may be arranged together in various combinations, and may be combined in a single package or device.
The microprocessor 220 may monitor and control the communication circuitry 138 through the interface 240. For example, the microprocessor 220 may instruct the communication circuitry 138 to establish communication with another device. The microprocessor 220 may provide the communication circuitry 138 with data from the sensor 200 or the signal processor 230 and instruct the communication circuitry 138 to transmit the data, for example, on a periodic basis. In the event that communication with the other device is lost, the microprocessor 220 may instruct the communication circuitry 138 monitor the connection and to re-establish communication when the other device becomes available and resume data transmission.
The microprocessor 220 may also operate to store data related to the signals from sensor 200 or from signal processor 230. For example, signals from sensor 200 and data from signal processor 230 may be accumulated and stored in memory 225 for future transmission. In one embodiment, signals and data may be accumulated and stored in memory 225 and then transmitted when instructed by microprocessor, for example, in response to an event, on a particular date, or in response to a switch closure or a command received through the communication circuitry 138. Using the example above, signals from sensor 200 may be accumulated and stored in memory 225 during periods of lost communication and then sent when communication is re-established.
In some embodiments, microprocessor 220 or signal processor 230, alone or in combination may process or condition the signals from sensor 200. For example, microprocessor 220 or signal processor 230 may filter, amplify, compress, apply various algorithms or functions, or otherwise manipulate the signals from sensor 200. As another example microprocessor 220 or signal processor 230, alone or in combination may process or condition the signals from sensor 200 to accommodate characteristics of a device receiving the transmitted data. The processed or conditioned signals may be transmitted or stored and transmitted as described above. The microprocessor 220 and the signal processor may also provide other types of data for transmission or storage and transmission. For example, measurement time stamps for signals from sensor 200, a connector serial number, a functional state of the connector derived from running diagnostic functions, power supply information, location in real time, etc.
Sensor 200 may be any transducer capable of converting a measurable characteristic to a signal for use by the connector. For example, sensor 200 may include a pressure, temperature, humidity, gas, pH, infrared, ultraviolet, visible light, voltage, current, power, conductivity, strain, load or acceleration measurement device. In an example where sensor 200 is a thermocouple, such as a type-K thermocouple, microprocessor 220 or signal processor 230, alone or in combination may process or condition the signals from sensor 200 to appear as another type of thermocouple, such as a type-J thermocouple while maintaining temperature accuracy. As a result, a J-type receiving device, such as a panel meter may display the proper temperature regardless of the type of thermocouple used Thus, different types of sensors may be used as measuring devices for different types of receiving devices.
Returning to
Data communication circuitry 415 may also manage communication among multiple connectors by recognizing additional connectors as they communicate and assigning them different communication channels, for example, different frequencies, time slots, chipping codes, or other differentiating communication characteristics. Second connector 410 may optionally include an external emitting device 430. Second connector 410 may also communicate with connector 300 or multiple connectors 100, 300.
In an exemplary embodiment data communication circuitry 415 may be a ZigBee coordinator or a ZigBee router.
Second connector 400 may also have a power supply, for example, a battery for supplying power to data communication circuitry 415. Similar to some embodiments of connectors 100, 300, some embodiments of second connector 410 may have a form factor similar to a standard, standard ceramic, miniature, or miniature ceramic thermocouple connector body. Second connector 410 may also have male connector pins 420, 425 with cylindrical or blade shaped extending contacts.
Connector 410 may plug into an instrument, meter, or other suitable equipment (not shown) and provide signals from the sensor to the equipment. Thus, signals from the sensor may be provided without a hardwired connection between the sensor and the equipment.
Equipment 510 may include test and measurement capabilities. For example, equipment 510 may be any one or any combination of a pressure, temperature, humidity, gas, pH, infrared, ultraviolet, visible light, voltage, current, power, conductivity, strain, or acceleration meter or test equipment. Similar to other embodiments, signals from the sensor 200 may be provided without a hardwired connection between the sensor and the equipment 510. Equipment 510 may also communicate with connector 300 having a built in sensor as described above.
Equipment 510 may include circuitry 520 for driving a display to present data related to the received signal in human readable form. The equipment 510 may also include processing circuitry 515 for further conditioning the received signal and process control circuitry 525 for controlling an external process 530 using the received signal or an output of processing circuitry 515.
Other embodiments of connector 100 may be included as part of a thermocouple assembly, imbedded into a thermocouple head and well assembly, or into a thermocouple package or housing. Connector 100 may be connected to thermocouple assemblies, pressure transducers, load cells, anemometers, and other sensors, as well as RTDs and thermistors. Alternately, the components of connector 100 may be incorporated into these and other types of assemblies.
Thus, the disclosed embodiments provide a mechanism to utilize multiple sensors without the drawbacks of multiple hardwired connections. The disclosed embodiments generally eliminate the need for wires from sensors to controllers, or between sensors and controllers, or between sensors and any computing device.
The disclosed embodiments provide a connector with circuitry for processing a signal and a transmitter for transmitting the processed signal. The disclosed embodiments also provide a connector includes a sensor for providing a signal, circuitry for processing the signal, and a transmitter for transmitting the processed signal. Further embodiments include a connector system having a first connector with circuitry for processing a signal and a transmitter for transmitting the processed signal, and a second connector having a receiver for receiving the transmitted signal. Still further embodiments provide a system for test and measurement including a connector including circuitry for processing a signal and a transmitter for transmitting the processed signal, and an instrument including a receiver for receiving the transmitted signal.
It should be understood that the foregoing description is only illustrative of the present embodiments. Various alternatives and modifications can be devised by those skilled in the art without departing from the embodiments disclosed herein. Accordingly, the embodiments are intended to embrace all such alternatives, modifications and variances which fall within the scope of the appended claims.
This application claims the benefit of U.S. Provisional Application No. 60/862,697 filed 24 Oct. 2006, which is incorporated by reference herein in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| 60862697 | Oct 2006 | US |
