CN204514408U - A kind of infrared interface circuit for gas meter, flow meter - Google Patents
A kind of infrared interface circuit for gas meter, flow meter Download PDFInfo
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- CN204514408U CN204514408U CN201520237048.4U CN201520237048U CN204514408U CN 204514408 U CN204514408 U CN 204514408U CN 201520237048 U CN201520237048 U CN 201520237048U CN 204514408 U CN204514408 U CN 204514408U
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Abstract
The utility model relates to gas metering field, particularly a kind of infrared control circuit for gas meter, flow meter, comprise power control circuit and Infrared Transmission circuit, comprise power control circuit and Infrared Transmission circuit, described power control circuit is connected with Infrared Transmission circuit, for controlling the power supply of described Infrared Transmission circuit; Described Infrared Transmission circuit has receiving port and transmit port, and is connected with the controller of gas meter, flow meter by described receiving port, transmit port; The infrared interface circuit for gas meter, flow meter that the utility model provides is provided with power control circuit, can control the on/off of infrared interface circuit as required, thus is ensureing, under the prerequisite that necessary temp gathers, to save system power supply to greatest extent.
Description
Technical field
The utility model relates to gas metering field, particularly a kind of infrared interface circuit for gas meter, flow meter.
Background technology
The measuring accuracy of gas meter, flow meter can be subject to the various factors such as temperature and gaseous-pressure, therefore be provided with infrared interface circuit in gas meter, flow meter more, but the infrared interface circuit of existing gas meter, flow meter mostly is continued power and detects, for gas meter, flow meter, especially adopt battery as the gas meter, flow meter of power supply, this causes the waste of power supply undoubtedly, is unfavorable for the work of gas meter, flow meter, and the accuracy of detection of infrared interface circuit also has vital effect to measurement result simultaneously.
Utility model content
Goal of the invention of the present utility model is the problem solving existing gas meter, flow meter infrared interface circuit continued power, provides a kind of infrared interface circuit for gas meter, flow meter of controllable switch,
For an infrared interface circuit for gas meter, flow meter, comprise power control circuit and Infrared Transmission circuit, described power control circuit is connected with Infrared Transmission circuit, for controlling the power supply of described Infrared Transmission circuit; Described Infrared Transmission circuit has receiving port and transmit port, and is connected with the controller of gas meter, flow meter by described receiving port, transmit port;
Described power control circuit comprises the first triode, the second resistance and the first metal-oxide-semiconductor be arranged in parallel and the first resistance; One end of the first metal-oxide-semiconductor be arranged in parallel and the first resistance connects power supply, and the other end is the output terminal of power control circuit; The control end of described first metal-oxide-semiconductor is connected with the collector of the first triode, one end of the second resistance simultaneously, the other end of the second resistance is connected with power supply, the emitter grounding of the first triode, the base stage of the first triode is for receiving the control signal from gas meter controller simultaneously.
Further, described Infrared Transmission circuit includes phototriode, light emitting diode, the second triode, the 3rd triode, the 4th triode, the 5th triode, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance and the 7th resistance, described phototriode is for receiving infrared signal, its emitter-base bandgap grading is connected with the base stage of the second triode, the collector of the second triode is connected with one end of the 3rd resistance and the receiving port of described Infrared Transmission circuit simultaneously, the other end of described 3rd resistance is connected with power supply, the collector of described phototriode is connected with the emitter-base bandgap grading of the 3rd triode, the collector of described 3rd triode is connected with described power control circuit output terminal, the base stage of described 3rd triode is connected with described power control circuit output terminal by the 4th resistance, it is also connected with the emitter-base bandgap grading of the 4th triode simultaneously, the base stage of described 4th triode is connected with the base stage of the transmit port of described Infrared Transmission circuit and the 5th triode, it is also connected with power supply by the 5th resistance simultaneously, the emitter-base bandgap grading of described 5th triode is connected with described power control circuit output terminal by the 6th resistance, the 7th resistance, it is also connected with the negative pole of light emitting diode by the 6th resistance simultaneously, and the positive pole of described light emitting diode is connected with described power control circuit output terminal.
Preferably, described phototriode is NPN type phototriode.
Preferably, described 4th triode, the 5th triode are PNP type triode; Described second triode, the 3rd triode are NPN type triode.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
The infrared interface circuit for gas meter, flow meter that the utility model provides is provided with power control circuit, the on/off of infrared interface circuit can be controlled as required, thus under the prerequisite ensureing necessary infrared transmission function, save system power supply to greatest extent, circuit of the present utility model have employed the higher Infrared Transmission device of sensitivity (as NPN type phototriode) simultaneously, improves system accuracy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the circuit diagram of power control circuit in the utility model.
Fig. 3 is Infrared Transmission circuit figure in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The problem that goal of the invention of the present utility model is to solve existing gas meter, flow meter infrared interface circuit continued power provides a kind of infrared interface circuit for gas meter, flow meter of controllable switch, comprise power control circuit 2 and Infrared Transmission circuit 1, described power control circuit 2 is connected with Infrared Transmission circuit 1, for controlling the power supply of described Infrared Transmission circuit 1; Described Infrared Transmission circuit 1 has receiving port infrared_RX and transmit port infrared_TX, and be connected with the controller of gas meter, flow meter by described receiving port infrared_RX, transmit port infrared_TX, the information transmission that receiving port infrared_RX is used for described Infrared Transmission circuit to receive is to gas meter controller, and transmit port infrared_TX is for receiving the feedback information of gas meter controller.
Described power control circuit 2 comprises the first triode Q1, the second resistance R2 and the first metal-oxide-semiconductor M1 be arranged in parallel and the first resistance R1; One end of the first metal-oxide-semiconductor M1 be arranged in parallel and the first resistance R1 connects power supply VCC, and the other end is the output terminal V-IRED of power control circuit; The control end of described first metal-oxide-semiconductor M1 is connected with the collector of the first triode Q1, one end of the second resistance R2 simultaneously, the other end of the second resistance R2 is connected with power supply VCC, the emitter grounding of the first triode Q1, the base stage of the first triode Q1 is for receiving the control signal Ired_POW_CONT from gas meter controller simultaneously.
Further, described Infrared Transmission circuit 1 includes phototriode NPN-PHOTO, light emitting diode D1, the second triode Q2, the 3rd triode Q3, the 4th triode Q4, the 5th triode Q5, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 and the 7th resistance R7, described phototriode NPN-PHOTO is for receiving infrared signal, its emitter-base bandgap grading is connected with the base stage of the second triode Q2, the collector of the second triode Q2 is connected with one end of the 3rd resistance R3 and the receiving port infrared_RX of described Infrared Transmission circuit simultaneously, the other end of described 3rd resistance R3 is connected with power supply VCC, the collector of described phototriode NPN-PHOTO is connected with the emitter-base bandgap grading of the 3rd triode Q3, the collector of described 3rd triode Q3 is connected with described power control circuit output terminal V-IRED, the base stage of described 3rd triode Q3 is connected with described power control circuit output terminal V-IRED by the 4th resistance R4, it is also connected with the emitter-base bandgap grading of the 4th triode Q4 simultaneously, the base stage of described 4th triode Q4 is connected with the base stage of the transmit port infrared_TX of described Infrared Transmission circuit and the 5th triode Q5, it is also connected with power supply VCC by the 5th resistance R5 simultaneously, the emitter-base bandgap grading of described 5th triode Q5 is connected with described power control circuit output terminal V-IRED by the 6th resistance R6, the 7th resistance R7, it is also connected with the negative pole of light emitting diode D1 by the 6th resistance R6 simultaneously, and the positive pole of described light emitting diode D1 is connected with described power control circuit output terminal V-IRED.
Preferably, described phototriode NPN-PHOTO is NPN type phototriode, and it has higher sensitivity.
Preferably, described 4th triode Q4, the 5th triode Q5 are PNP type triode; Described second triode Q2, the 3rd triode Q3 are NPN type triode.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. for an infrared interface circuit for gas meter, flow meter, it is characterized in that, comprise power control circuit and Infrared Transmission circuit, described power control circuit is connected with Infrared Transmission circuit, for controlling the power supply of described Infrared Transmission circuit; Described Infrared Transmission circuit has receiving port and transmit port, and is connected with the controller of gas meter, flow meter by described receiving port, transmit port;
Described power control circuit comprises the first triode, the second resistance and the first metal-oxide-semiconductor be arranged in parallel and the first resistance; One end of the first metal-oxide-semiconductor be arranged in parallel and the first resistance connects power supply, and the other end is the output terminal of power control circuit; The control end of described first metal-oxide-semiconductor is connected with the collector of the first triode, one end of the second resistance simultaneously, the other end of the second resistance is connected with power supply, the emitter grounding of the first triode, the base stage of the first triode is for receiving the control signal from gas meter controller simultaneously.
2. as claimed in claim 1 for the infrared interface circuit of gas meter, flow meter, it is characterized in that, described Infrared Transmission circuit includes phototriode, light emitting diode, the second triode, the 3rd triode, the 4th triode, the 5th triode, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance and the 7th resistance, described phototriode is for receiving infrared signal, its emitter-base bandgap grading is connected with the base stage of the second triode, the collector of the second triode is connected with one end of the 3rd resistance and the receiving port of described Infrared Transmission circuit simultaneously, the other end of described 3rd resistance is connected with power supply, the collector of described phototriode is connected with the emitter-base bandgap grading of the 3rd triode, the collector of described 3rd triode is connected with described power control circuit output terminal, the base stage of described 3rd triode is connected with described power control circuit output terminal by the 4th resistance, it is also connected with the emitter-base bandgap grading of the 4th triode simultaneously, the base stage of described 4th triode is connected with the base stage of the transmit port of described Infrared Transmission circuit and the 5th triode, it is also connected with power supply by the 5th resistance simultaneously, the emitter-base bandgap grading of described 5th triode is connected with described power control circuit output terminal by the 6th resistance, the 7th resistance, it is also connected with the negative pole of light emitting diode by the 6th resistance simultaneously, and the positive pole of described light emitting diode is connected with described power control circuit output terminal.
3., as claimed in claim 2 for the infrared interface circuit of gas meter, flow meter, it is characterized in that, described phototriode is NPN type phototriode.
4., as claimed in claim 2 for the infrared interface circuit of gas meter, flow meter, it is characterized in that, described 4th triode, the 5th triode are PNP type triode; Described second triode, the 3rd triode are NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520237048.4U CN204514408U (en) | 2015-04-20 | 2015-04-20 | A kind of infrared interface circuit for gas meter, flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520237048.4U CN204514408U (en) | 2015-04-20 | 2015-04-20 | A kind of infrared interface circuit for gas meter, flow meter |
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| Publication Number | Publication Date |
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| CN204514408U true CN204514408U (en) | 2015-07-29 |
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| CN201520237048.4U Active CN204514408U (en) | 2015-04-20 | 2015-04-20 | A kind of infrared interface circuit for gas meter, flow meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748808A (en) * | 2015-04-20 | 2015-07-01 | 成都千嘉科技有限公司 | Infrared interface system for gas meter |
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- 2015-04-20 CN CN201520237048.4U patent/CN204514408U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748808A (en) * | 2015-04-20 | 2015-07-01 | 成都千嘉科技有限公司 | Infrared interface system for gas meter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 536, Section 1, airport 1st Road, Shuangliu Southwest Airport, Chengdu, Sichuan 610211 Patentee after: Chengdu Qianjia Technology Co.,Ltd. Address before: No. 536, Section 1, airport 1st Road, Shuangliu Southwest Airport, Chengdu, Sichuan 610211 Patentee before: Chengdu Qianjia Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |