CN101358947A - Intelligent SF6 gas sensor - Google Patents
Intelligent SF6 gas sensor Download PDFInfo
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- CN101358947A CN101358947A CNA2008101414193A CN200810141419A CN101358947A CN 101358947 A CN101358947 A CN 101358947A CN A2008101414193 A CNA2008101414193 A CN A2008101414193A CN 200810141419 A CN200810141419 A CN 200810141419A CN 101358947 A CN101358947 A CN 101358947A
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Abstract
The present invention discloses an intelligent SF6 gas sensor, and consists of a casing body, a circuit board and a sensor. The circuit board and the sensor are arranged in the casing body. The gas sensor is characterized in that the circuit board is provided with a sensor joint, a temperature compensation circuit, a power supply circuit, a signal processing circuit, a 485 output circuit, a 4 to 20 mA output circuit, and a GSM interface circuit; wherein, the sensor joint and the signal output end of the temperature compensation circuit are connected with the input end of the signal processing circuit; the output end of the signal processing circuit is connected with the 485 output circuit, the GSM interface circuit and the input end of the 4 to 20 mA output circuit; the 485 output circuit and the output end of the 4 to 20 mA output circuit can be connected with a host computer; the GSM interface circuit communicates with the host computer in the way of wireless communication. The gas sensor has the advantages of novel design and long service life, can be used not only in a portable way but also in an on-line way, can realize zero automatic tracking, has the intelligent characteristic, and has excellent social and economic benefits after being promoted.
Description
One, technical field:
The present invention relates to a kind of sensor, particularly relate to a kind of intelligent SF
6Gas sensor.
Two, background technology:
Adopt the SF of negative corona discharge detection method
6The gas leakage detector sensor is widely used in the detection of sulfur hexafluoride gas-insulating electrical equipment quantity of gas leakage.
Adopt the inner probe of its probe of sensor of negative corona discharge detection method under the high voltage pulse effect, to produce corona continuous discharge effect,, shorten the serviceable life of sensor or leak detection instrument if long-time use causes probe aging easily; And because probe is aging, sensor also can produce zero point drift, and measuring reliability is difficult to guarantee.
Three, summary of the invention:
Technical matters to be solved by this invention is: overcomes the deficiencies in the prior art, provides a kind of life-span longly both can portablely to use, again can online use, the intelligent SF with automatic following function at zero point
6Gas sensor.
Technical scheme of the present invention is: a kind of intelligent SF
6Gas sensor, comprise housing and be arranged on housing interior circuit board, sensor, described circuit board is provided with sensor connector, temperature-compensation circuit, power circuit, signal processing circuit, 485 output circuits, 4～20mA output circuit, GSM interface circuit, wherein, the signal output part of described sensor connector, described temperature-compensation circuit is connected with the input end of described signal processing circuit; The output terminal of described signal processing circuit is connected with the input end of described 485 output circuits, described GSM interface circuit, described 4～20mA output circuit; The output terminal of described 485 output circuits, described 4～20mA output circuit can be connected to host computer, and described GSM interface circuit is communicated by letter with host computer by the mode of radio communication.
Described signal processing circuit comprises a MCU processor chips MSP430, is connected with a loudspeaker, three relay indicating lights and a fan on its IO mouth respectively.
Signal output part SIN1, the SIN2 of described sensor connector is connected with the ADC12 module of the MCU processor chips MSP430 inside of described signal processing circuit respectively, and signal controlling end CON1, the CON2 of described sensor connector is connected with the IO mouth of the MCU processor chips MSP430 of described signal processing circuit respectively.
Described temperature-compensation circuit is connected with resistance by temperature sensor and forms, and the output terminal of temperature-compensation circuit is connected with the IO mouth of the MCU processor chips MSP430 of signal processing circuit.
Described 485 output circuits comprise optocoupler, 485 level transferring chip; Input end RXD, the TXD of described 485 output circuits, DE are connected with the IO mouth with RXD, the TXD of the MCU processor chips MSP430 of described signal processing circuit respectively, its transmitting terminal becomes differential signal A, the output of B two-way with the Transistor-Transistor Logic level conversion of signals of serial port, can realize the teletransmission of signal by 485 output circuits.
Described 4～20mA output circuit is connected with the MCU processor chips MSP430 of described signal processing circuit by high precision digital-to-analog converter AD420 and forms, wherein, three IO mouths of described MCU processor chips MSP430 are connected with input end LATCH, CLOCK, the DATAIN pin of described high precision digital-to-analog converter AD420 respectively; The output of described 4～20mA output circuit has electric current output Iout and voltage output Vout, from IOUT and the VOUT output of described high precision digital-to-analog converter AD420, digital signal is converted to 4～20mA simulating signal that the industry spot instrument need be used respectively.
Described GSM interface circuit is connected with described signal processing circuit by gsm module and forms; The RX of described GSM interface circuit, TX end is connected with TXD, the RXD of the MCU processor chips MSP430 of described signal processing circuit respectively, by gsm module, can carry out the radio communication of signal.
Described power circuit provides power supplys such as 5V, 3.3V for the entire circuit plate.
Host computer is meant: the people can directly send the computing machine of controlling order, generally is PC, shows on the screen that various signals change (hydraulic pressure, water level, temperature etc.).Slave computer be direct opertaing device obtain status of equipment computing machine, generally be PLC/ single-chip microcomputer and so on.This sensor can be used as slave computer.Slave computer is at first given in the order that host computer sends, and slave computer becomes the corresponding time sequence signal directly to control relevant device according to this command interpretation again.
The invention has the beneficial effects as follows:
Modern design of the present invention, the life-span is long, both can portablely use, and can onlinely use again, can also zero point from motion tracking, be intelligent SF
6Gas sensor.Have good society and economic benefit after the popularization.
Adopt the intelligent SF of high-voltage pulse negative corona continuous discharge detection method development
6Gas sensor, it both can constitute portable SF
6Gas leakage alarm instrument also can be used as into SF
6The probe of gas on-line monitoring system/device can be widely used in SF
6Gas insulation breaker, SF
6Sulfur hexafluoride gas-insulating electrical equipment SF such as gas insulated transformer substation
6The hazardous environment that gas leaks, monitoring SF
6The leakage of gas.
Four, description of drawings:
Fig. 1 is intelligent SF
6The circuit block diagram of gas sensor;
Fig. 1 is intelligent SF
6The circuit theory diagrams of gas sensor.
Five, embodiment:
Embodiment: referring to Fig. 1 and Fig. 2, among the figure, intelligent SF
6Gas sensor comprises housing and is arranged on housing interior circuit board, sensor, circuit board is provided with sensor connector, temperature-compensation circuit, power circuit, signal processing circuit, 485 output circuits, 4～20mA output circuit, GSM interface circuit, wherein, the signal output part of sensor connector, temperature-compensation circuit is connected with the input end of signal processing circuit; The output terminal of signal processing circuit is connected with the input end of 485 output circuits, GSM interface circuit, 4～20mA output circuit; The output terminal of 485 output circuits, 4～20mA output circuit can be connected to host computer, and the GSM interface circuit is communicated by letter with host computer by the mode of radio communication.
Signal processing circuit comprises a MCU processor chips MSP430, is connected with a loudspeaker, three relay indicating lights and a fan on its IO mouth respectively.Work as SF
6When gas leaked concentration above prevalue, loudspeaker sent chimes of doom; Relay indicating light prompting MSP430 chip is in running order; Fan is used as asepwirator pump.
Signal output part SIN1, the SIN2 of sensor connector is connected with the ADC12 module of the MCU processor chips MSP430 inside of signal processing circuit respectively, and signal controlling end CON1, the CON2 of sensor connector is connected with the IO mouth of the MCU processor chips MSP430 of signal processing circuit respectively.The working time and the frequency of the control signal control sensor that signal processing chip sends, make sensor regulate the time interval that leakage rate sudden change environment is measured down automatically, improved the life-span and the reliability of sensor according to the variation of environmental parameter, pulse strength measurement parameter.Unnecessary long time continuous working causes the serviceable life of the aging shortening of probe sensor to have avoided sensor.The SF of sensor output
6Gas leaks concentration signal SIN1, SIN2 and enters the MCU processor chips, can change into various output signals through after the signal Processing, change into 4～20mA current analog signal, change into the teletransmission that 485 serial signals carry out signal, carry out radio communication by the gsm module circuit.
Temperature-compensation circuit is connected with resistance by temperature sensor and forms, and the output terminal of temperature-compensation circuit is connected with the IO mouth of the MCU processor chips MSP430 of signal processing circuit.
485 output circuits comprise optocoupler, 485 level transferring chip; Input end RXD, the TXD of 485 output circuits, DE are connected with the IO mouth with RXD, the TXD of the MCU processor chips MSP430 of signal processing circuit respectively, its transmitting terminal becomes differential signal A, the output of B two-way with the Transistor-Transistor Logic level conversion of signals of serial port, can realize the teletransmission of signal by 485 output circuits.
4～20mA output circuit is connected with the MCU processor chips MSP430 of signal processing circuit by high precision digital-to-analog converter AD420 and forms, wherein, three of MCU processor chips MSP430 IO mouths are connected with input end LATCH, CLOCK, the DATAIN pin of high precision digital-to-analog converter AD420 respectively; The output of 4～20mA output circuit has electric current output Iout and voltage output Vout, from IOUT and the VOUT output of high precision digital-to-analog converter AD420, digital signal is converted to 4～20mA simulating signal that the industry spot instrument need be used respectively.4～20mA current signal antijamming capability is good, and current signal can transmit distant, can realize the teletransmission of signal by 4～20mA output circuit; What this is thereby the analog regulation instrument that can insert the past easily need not be considered its input signal, and exporting this is what.
The GSM interface circuit is connected with signal processing circuit by gsm module and forms; The RX of GSM interface circuit, TX end is connected with TXD, the RXD of the MCU processor chips MSP430 of signal processing circuit respectively, by gsm module, can carry out the radio communication of signal.
Power circuit provides power supplys such as 5V, 3.3V for the entire circuit plate.
Host computer is meant: the people can directly send the computing machine of controlling order, generally is PC, shows on the screen that various signals change (hydraulic pressure, water level, temperature etc.).Slave computer is the computing machine that direct opertaing device obtains status of equipment, generally is single-chip microcomputer/PLC and so on.This sensor can be used as slave computer, and signal is uploaded to host computer by 485 interfaces, 4～20mA output interface, gsm module.Slave computer is at first given in the order that host computer sends, and slave computer becomes the corresponding time sequence signal directly to control relevant device according to this command interpretation again.
This intellectuality SF
6The principle of work of gas sensor is as follows:
After the start, the fan entry into service of microprocessor (MCU) control, fan is with sulfur hexafluoride gas (SF
6) suck in the sensor probe, sensor probe is with sulfur hexafluoride gas (SF
6) concentration signal change into faint current signal, enter microprocessor (MCU) through the amplifying signal of amplifier, carry out data acquisition and processing (DAP) for microprocessor (MCU).Because sulfur hexafluoride gas (SF
6) be subjected to Temperature Influence, so contain temperature compensation module in the circuit temperature of environment is compensated, the temperature signal of temperature sensor enters microprocessor (MCU), and the temperature of environment is compensated.Microprocessor (MCU) is finished data acquisition process and is implemented various controls: the data output of gathering on display screen, during work, is lighted relay indicating light; Sulfur hexafluoride gas (SF in industrial environment
6) concentration surpass to set numerical value the time, control loudspeaker sends chimes of doom, remove dangerous situation after, do not send chimes of doom.The signal of handling through microprocessor (MCU) enters high precision digital-to-analog converter, converts the simulating signal output of 4～20mA to, uses for equipment such as host computers; The signal of handling through microprocessor (MCU) enters 485 output modules, converts the output of 485 serial signals to; Signal carries out radio communication by behind the gsm module with some equipment.Its keyboard is man-machine interface, and the people can carry out zero point correction by keyboard, operations such as sensor are set.
Claims (8)
1, a kind of intelligent SF
6Gas sensor, comprise housing and be arranged on housing interior circuit board, sensor, it is characterized in that: described circuit board is provided with sensor connector, temperature-compensation circuit, power circuit, signal processing circuit, 485 output circuits, 4～20mA output circuit, GSM interface circuit, wherein, the signal output part of described sensor connector, described temperature-compensation circuit is connected with the input end of described signal processing circuit; The output terminal of described signal processing circuit is connected with the input end of described 485 output circuits, described GSM interface circuit, described 4～20mA output circuit; The output terminal of described 485 output circuits, described 4～20mA output circuit can be connected to host computer, and described GSM interface circuit is communicated by letter with host computer by the mode of radio communication.
2, intelligent SF according to claim 1
6Gas sensor is characterized in that: described signal processing circuit comprises a MCU processor chips MSP430, is connected with a loudspeaker, three relay indicating lights and a fan on its IO mouth respectively.
3, intelligent SF according to claim 2
6Gas sensor, it is characterized in that: signal output part SIN1, the SIN2 of described sensor connector is connected with the ADC12 module of the MCU processor chips MSP430 inside of described signal processing circuit respectively, and signal controlling end CON1, the CON2 of described sensor connector is connected with the IO mouth of the MCU processor chips MSP430 of described signal processing circuit respectively.
4, intelligent SF according to claim 2
6Gas sensor is characterized in that: described temperature-compensation circuit is connected with resistance by temperature sensor and forms, and the output terminal of temperature-compensation circuit is connected with the IO mouth of the MCU processor chips MSP430 of signal processing circuit.
5, intelligent SF according to claim 2
6Gas sensor is characterized in that: described 485 output circuits comprise optocoupler, 485 level transferring chip; Input end RXD, the TXD of described 485 output circuits, DE are connected with the IO mouth with RXD, the TXD of the MCU processor chips MSP430 of described signal processing circuit respectively, its transmitting terminal becomes differential signal A, the output of B two-way with the Transistor-Transistor Logic level conversion of signals of serial port, can realize the teletransmission of signal by 485 output circuits.
6, intelligent SF according to claim 2
6Gas sensor, it is characterized in that: described 4～20mA output circuit is connected with the MCU processor chips MSP430 of described signal processing circuit by high precision digital-to-analog converter AD420 and forms, wherein, three IO mouths of described MCU processor chips MSP430 are connected with input end LATCH, CLOCK, the DATAIN pin of described high precision digital-to-analog converter AD420 respectively; The output of described 4～20mA output circuit has electric current output Iout and voltage output Vout, from IOUT and the VOUT output of described high precision digital-to-analog converter AD420, digital signal is converted to 4～20mA simulating signal that the industry spot instrument need be used respectively.
7, intelligent SF according to claim 2
6Gas sensor is characterized in that: described GSM interface circuit is connected with described signal processing circuit by gsm module and forms; The RX of described GSM interface circuit, TX end is connected with TXD, the RXD of the MCU processor chips MSP430 of described signal processing circuit respectively, by gsm module, can carry out the radio communication of signal.
8, intelligent SF according to claim 2
6Gas sensor is characterized in that: described power circuit provides power supplys such as 5V, 3.3V for the entire circuit plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101414193A CN101358947A (en) | 2008-09-22 | 2008-09-22 | Intelligent SF6 gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101414193A CN101358947A (en) | 2008-09-22 | 2008-09-22 | Intelligent SF6 gas sensor |
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| Publication Number | Publication Date |
|---|---|
| CN101358947A true CN101358947A (en) | 2009-02-04 |
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ID=40331452
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101414193A Pending CN101358947A (en) | 2008-09-22 | 2008-09-22 | Intelligent SF6 gas sensor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610060A (en) * | 2012-03-20 | 2012-07-25 | 南京波腾科技工程有限公司 | Portable gas alarm system with wireless communication function |
| CN102881120A (en) * | 2012-10-09 | 2013-01-16 | 宁波宇宏电气有限公司 | Gas leakage alarm controller with intelligent alarm threshold value and control method thereof |
| CN102954550A (en) * | 2012-11-03 | 2013-03-06 | 无锡市华能电力机械有限公司 | Sulfur hexafluoride booster ventilation device of transformer substation |
| CN103257157A (en) * | 2013-04-27 | 2013-08-21 | 镇江恒驰科技有限公司 | Combustible gas detector and calibration method thereof |
| CN103293272A (en) * | 2013-05-09 | 2013-09-11 | 济南市长清计算机应用公司 | Sulfur hexafluoride alarm detector |
| CN103592085A (en) * | 2013-11-19 | 2014-02-19 | 国家电网公司 | Negative corona sulfur hexafluoride gas leak detector |
| CN104535628A (en) * | 2014-12-18 | 2015-04-22 | 深圳市元征科技股份有限公司 | Method and device for acquiring gas concentration |
| CN104569756A (en) * | 2014-12-29 | 2015-04-29 | 河海大学常州校区 | Switch cabinet partial discharge on-line monitoring system based on electronic nose sensor |
| CN106405124A (en) * | 2015-07-31 | 2017-02-15 | 南京城市职业学院 | Sensor for VOCs |
| CN106872564A (en) * | 2015-12-14 | 2017-06-20 | 国网智能电网研究院 | A kind of SF6Gas sensor |
-
2008
- 2008-09-22 CN CNA2008101414193A patent/CN101358947A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610060B (en) * | 2012-03-20 | 2013-06-26 | 南京波腾科技工程有限公司 | Portable gas alarm system with wireless communication function |
| CN102610060A (en) * | 2012-03-20 | 2012-07-25 | 南京波腾科技工程有限公司 | Portable gas alarm system with wireless communication function |
| CN102881120B (en) * | 2012-10-09 | 2014-07-23 | 宁波宇宏电气有限公司 | Gas leakage alarm controller with intelligent alarm threshold value and control method thereof |
| CN102881120A (en) * | 2012-10-09 | 2013-01-16 | 宁波宇宏电气有限公司 | Gas leakage alarm controller with intelligent alarm threshold value and control method thereof |
| CN102954550A (en) * | 2012-11-03 | 2013-03-06 | 无锡市华能电力机械有限公司 | Sulfur hexafluoride booster ventilation device of transformer substation |
| CN103257157A (en) * | 2013-04-27 | 2013-08-21 | 镇江恒驰科技有限公司 | Combustible gas detector and calibration method thereof |
| CN103293272A (en) * | 2013-05-09 | 2013-09-11 | 济南市长清计算机应用公司 | Sulfur hexafluoride alarm detector |
| CN103592085A (en) * | 2013-11-19 | 2014-02-19 | 国家电网公司 | Negative corona sulfur hexafluoride gas leak detector |
| CN103592085B (en) * | 2013-11-19 | 2016-08-17 | 国家电网公司 | Negative corona sulfur hexafluoride gas leak detector |
| CN104535628A (en) * | 2014-12-18 | 2015-04-22 | 深圳市元征科技股份有限公司 | Method and device for acquiring gas concentration |
| CN104569756A (en) * | 2014-12-29 | 2015-04-29 | 河海大学常州校区 | Switch cabinet partial discharge on-line monitoring system based on electronic nose sensor |
| CN104569756B (en) * | 2014-12-29 | 2017-11-28 | 河海大学常州校区 | Switch cabinet partial discharge on-line monitoring system based on electronic nose sensor |
| CN106405124A (en) * | 2015-07-31 | 2017-02-15 | 南京城市职业学院 | Sensor for VOCs |
| CN106405124B (en) * | 2015-07-31 | 2019-04-05 | 南京城市职业学院 | A kind of VOCs sensor |
| CN106872564A (en) * | 2015-12-14 | 2017-06-20 | 国网智能电网研究院 | A kind of SF6Gas sensor |
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Open date: 20090204 |