CN201885990U - Intelligent gas sensor - Google Patents
Intelligent gas sensor Download PDFInfo
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- CN201885990U CN201885990U CN2010206455578U CN201020645557U CN201885990U CN 201885990 U CN201885990 U CN 201885990U CN 2010206455578 U CN2010206455578 U CN 2010206455578U CN 201020645557 U CN201020645557 U CN 201020645557U CN 201885990 U CN201885990 U CN 201885990U
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- gas sensor
- sensor
- intelligent gas
- interface unit
- microprocessor
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Abstract
The utility model relates to an intelligent gas sensor and particularly relates to the filed of sensor devices capable of detecting various gases, in particular to a multifunctional intelligent gas sensor which integrates a gas-sensitive device and a control unit into a whole. The intelligent gas sensor comprises a shell, a gas-sensitive element, a sensor control unit and a universal interface unit, wherein the gas-sensitive element and the sensor control unit are arranged in the shell, and the universal interface unit is arranged at the upper end of the shell. An MODBUS serial-port protocol is adopted by the intelligent gas sensor, a standard digital signal is output, six functional gilded pins are adopted by the interface unit, the intelligent gas sensor can be installed with a gas-detector main machine defined by a corresponding structure and pins in a corresponding plugging and unplugging mode, hot plugging and unplugging are supported in a use field, and the replacement among different gas sensors can be facilitated through the characteristics, so that a gas detector (transducer) using the intelligent gas sensor is more convenient to maintain and repair.
Description
Technical field
The utility model relates to sensor field, and particularly the field of sensor devices of detectable all gases is that a kind of integrated gas sensing property device and control module are in the multifunctional intelligent gas sensor of one specifically.
Background technology
Conventional gas sensor, as semiconductor-type, catalytic combustion type and electrochemical type etc., generally only to gas detector output transducer simulating signal, detector can not be discerned or pickup information automatically, detector can not carry out that parameter is provided with to sensor etc., simultaneously, because the gas difference of being surveyed, various its specifications of common gas sensor are different, thereby can't cause different types of sensor to replace the inconvenience of using with different types of sensor application to on a detector main frame.In addition, existing gas sensor and some gas sensors, generally need cooperate just can finish and realize Sensor Analog Relay System Signal Processing, sampling with the detector main frame, the zeroing of sensor and demarcation also can only be finished at the detector end, this just makes zeroing and staking-out work finish at detector arrangement scene, uses very inconvenient.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, provide a kind of can be with different types of sensor application in same detector main frame, make things convenient for the replacement of sensor, simultaneously can return to zero separately and demarcate sensor, improve the convenience of sensor maintenance, and intelligent gas sensor simple in structure, with low cost, as to have wide range of applications.
In order to realize above-mentioned purpose, intelligent gas sensor of the present utility model has following formation:
This intelligent gas sensor, its principal feature is, comprise housing, be arranged at gas sensor and sensor control unit in the described housing, and general interface unit, described gas sensor connects described general interface unit by described sensor control unit.
In this intelligent gas sensor, described general interface unit comprises guide pin and at least two single data transmission contact pin.Described data transmission contact pin is the serial communication interface pin.
In this intelligent gas sensor, described gas sensor is inflammable gas gas sensor, toxic and harmful gas sensor or oxygen gas sensor.
In this intelligent gas sensor, described gas sensor also comprises fly net and encapsulating spare, described fly net is fixedly connected on an end of close gas sensor on the housing, and described encapsulating spare is fixedly connected on the end that general interface unit is set on the described housing.
In this intelligent gas sensor, described sensor control unit comprises signal Processing subelement and microprocessor subelement, and described gas sensor is connected described general interface unit by described signal Processing subelement in regular turn with the microprocessor subelement.
In this intelligent gas sensor, described signal Processing subelement comprises sensor matching circuit, signal amplification circuit and signal amplification output circuit, and described gas sensor is connected described microprocessor subelement by described sensor matching circuit, signal amplification circuit and signal amplification output circuit in regular turn.
In this intelligent gas sensor, described microprocessor subelement comprises microprocessor, analog to digital conversion sample circuit, temperature and humidity compensation circuit, non-linear compensation circuit and data-carrier store, described analog to digital conversion sample circuit, temperature and humidity compensation circuit, non-linear compensation circuit and data-carrier store all are connected in described microprocessor, and described signal Processing subelement is connected described general interface unit by described analog to digital conversion sample circuit in regular turn with microprocessor.Described data storage subelement is an Electrically Erasable Read Only Memory, and described Electrically Erasable Read Only Memory is connected in described microprocessor.
Adopted the intelligent gas sensor of this utility model, because this gas sensor comprises housing, be arranged at gas sensor and sensor control unit in the described housing, and be arranged at the outer general interface unit of described housing, described gas sensor connects described general interface unit by described sensor control unit, and described gas sensor connects described detector body by described general interface unit, make dissimilar gas sensors all can connect same detector main frame by general interface unit, conveniently between the gas with various sensor, replace, make the application of gas sensor and gas detector more convenient.The utility model is simple in structure, and is with low cost, and range of application is comparatively extensive.
Description of drawings
Fig. 1 is the fractionation structural representation of intelligent gas sensor of the present utility model.
Fig. 2 is a microprocessor circuit connected mode synoptic diagram in the microprocessor subelement of intelligent gas sensor of the present utility model.
Embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Figure 1ly, be the fractionation structural representation of intelligent gas sensor of the present utility model.
In a kind of embodiment of the present utility model, this intelligent gas sensor comprises housing 1, is arranged at gas sensor 2 and sensor control unit 3 in the described housing, and being arranged at described housing 1 general interface unit 4 outward, described gas sensor 2 connects described general interface unit 4 by described sensor control unit 3.Described general interface unit 4 comprises a guide pin 41 and six roots of sensation data transmission contact pin 42, and wherein data transmission contact pin 42 is the serial communication interface pin.Described gas sensor 2 can be a kind of in inflammable gas gas sensor, toxic and harmful gas sensor or the oxygen gas sensor.Described gas sensor also comprises fly net 5 and encapsulating spare 6, and described fly net 5 is fixedly connected on an end of close gas sensor 2 on the housing 1, and described encapsulating spare 6 is fixedly connected on the end that general interface unit 4 is set on the described housing 1.In this embodiment, described sensor control unit 3 comprises signal Processing subelement 31 and microprocessor subelement 32, and described gas sensor 2 is connected described general interface unit 4 by described signal Processing subelement 31 in regular turn with microprocessor subelement 32.
In other embodiment of the present utility model, described general interface unit 4 can comprise guide pin 41 more than one and at least two data transmission contact pin 42.
In a kind of more preferably embodiment, described signal Processing subelement 31 comprises sensor matching circuit, signal amplification circuit and signal amplification output circuit, and described gas sensor 2 is connected described microprocessor subelement 32 by described sensor matching circuit, signal amplification circuit and signal amplification output circuit in regular turn.
At another kind more preferably in the embodiment, described microprocessor subelement 32 comprises microprocessor, analog to digital conversion sample circuit, temperature and humidity compensation circuit, non-linear compensation circuit and data-carrier store, described analog to digital conversion sample circuit, temperature and humidity compensation circuit, non-linear compensation circuit and data-carrier store all are connected in described microprocessor, and described signal Processing subelement 31 is connected described general interface unit 4 by described analog to digital conversion sample circuit in regular turn with microprocessor.
In a kind of preferred embodiment, described data storage subelement is Electrically Erasable Read Only Memory (EEPROM), and described Electrically Erasable Read Only Memory is connected in described microprocessor.
In actual applications, detectable and measurement inflammable gas, toxic and harmful or oxygen etc. of intelligent gas sensor of the present utility model.This gas sensor adopts modular design, have identical structure, identical pin distributes and identical pin definitions, the homologous series sensor can exchange use, the gas sensor pin design has six functional plating Au probes and a guide pin, can corresponding pluggable mode with the gas detector main frame of corresponding construction and pinout install, using the on-site support hot plug, these features make the maintenance and repair of the gas detector (transmitter) that uses this gas sensor very convenient.
Intelligent gas sensor arrangement one road TTL serial communication interface of the present utility model is used for the gas concentration value of output transducer testing environment, also can be used for the setting and the demarcation of sensor.
Intelligent gas sensor of the present utility model adopts Modbus RTU communication protocol, and the factory state of record sensor, demarcation state, duty and other are provided with parameter information.These parameters be stored in built-in power down can the EEPROM of drop-out in.Can be connected with PC or be connected with the controller of match protocol, the information that is stored in the sensor is read in convenient realization; Also can carry out simultaneously production information, sensor information (comprising the gas sensor type of using, zero point value, calibration value etc.), the gas type of surveying, range, unit, the current gas concentration value etc. of read sensor, also can carry out operations such as parameter setting, setting at zero point, calibration point setting, temperature compensation parameter and factory reset to intelligence sensor by the detector main frame with the matching used gas detector main frame of Intelligence sensor.
Intelligent gas sensor of the present utility model and gas detector host circuit can constitute the essential safe type circuit, are surveying on-site support hot plug mode.
The structure of intelligent gas sensor of the present utility model is mainly by housing, gas sensor, and sensor signal plate (PCB1), sensor mainboard (PCB2) and encapsulating accessory are formed.Described PCB1 is connected by connector with PCB2.PCB1 mainly is responsible for providing coupling different sensors circuitry needed, and the signal of processes sensor output, and signal is carried out PCB2 is given in suitable amplifier output by connector microprocessor.The function of the circuit of PCB2 part comprises: A/D conversion, nonlinear compensation, temperature compensation, signal Processing, and functions such as production information, sensor information, gas range, unit, gas type, current gas concentration value storage.6 gold-plated probes of PCB2 output are as the pin of sensor.After gas sensor (or sensor), PCB1, PCB2 correspondence connect, close being potted in the housing, the encapsulating accessory is enclosed within on gold-plated probe and the guide pin and is pressed into housing.Finally expose six gold-plated probes and guide pin interface as this gas sensor and gas detector main frame.
Microprocessor among the PCB2 of intelligent gas sensor of the present utility model adopts the typical application controls circuit of system programmable (ISP), concrete circuit connecting mode as shown in Figure 2, wherein:
Single-chip microcomputer 15 pin, (AD3) be the thermistor temp thief hatch: voltage should be 3.3V in the time of 25 ℃, can obtain temperature curve by the actual test of circuit; Single-chip microcomputer 14 pin (AD2) can be judged sensor type; Single-chip microcomputer 13 pin (AD1) can judge whether sensor lost efficacy; Single-chip microcomputer 12 pin (AD0) are the measure gas concentrations thief hatch; Single-chip microcomputer 9 pin are when connecing semiconductor transducer, and PWM output control semiconductor transducer supply voltage is invalid when connecing catalysis and galvanochemistry and oxygen sensor; Single-chip microcomputer 11 pin are the PWM delivery outlets that are the intelligent gas sensor of ratio with gas concentration.
Single- chip microcomputer 2,3 pin, be the TTL serial communication interface, the MODBUS communications protocol is adopted in the output of serial ports numeral, and described communications protocol is meant the communications protocol that Intelligence sensor and sensor communication apparatus (abbreviating main frame as PC, gas detector, transmitter or display device etc.) have.
Adopted above-mentioned intelligent gas sensor, gas sensor connects described general interface unit by described sensor control unit, and described gas sensor connects described detector body by described general interface unit, make dissimilar gas sensors all can connect same detector main frame by general interface unit, conveniently between the gas with various sensor, replace, make the application of gas sensor and gas detector more convenient.The utility model is simple in structure, and is with low cost, and range of application is comparatively extensive.
In this instructions, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (9)
1. intelligent gas sensor, it is characterized in that, described gas sensor comprises housing, is arranged at gas sensor and sensor control unit and general interface unit in the described housing, and described gas sensor is connected with described general interface unit by described sensor control unit.
2. intelligent gas sensor according to claim 1 is characterized in that, described general interface unit comprises guide pin and at least two single data transmission contact pin.
3. intelligent gas sensor according to claim 2 is characterized in that, described data transmission contact pin is the serial communication interface pin.
4. intelligent gas sensor according to claim 1 is characterized in that, described gas sensor is inflammable gas gas sensor, toxic and harmful gas sensor or oxygen gas sensor.
5. intelligent gas sensor according to claim 1, it is characterized in that, described gas sensor also comprises fly net and encapsulating spare, described fly net is fixedly connected on an end of close gas sensor on the housing, and described encapsulating spare is fixedly connected on the end that general interface unit is set on the described housing.
6. according to each described intelligent gas sensor in the claim 1 to 5, it is characterized in that, described sensor control unit comprises signal Processing subelement and microprocessor subelement, and described gas sensor is connected described general interface unit by described signal Processing subelement in regular turn with the microprocessor subelement.
7. intelligent gas sensor according to claim 6, it is characterized in that, described signal Processing subelement comprises sensor matching circuit, signal amplification circuit and signal amplification output circuit, and described gas sensor is connected described microprocessor subelement by described sensor matching circuit, signal amplification circuit and signal amplification output circuit in regular turn.
8. intelligent gas sensor according to claim 6, it is characterized in that, described microprocessor subelement comprises microprocessor, analog to digital conversion sample circuit, temperature and humidity compensation circuit, non-linear compensation circuit and data-carrier store, described analog to digital conversion sample circuit, temperature and humidity compensation circuit, non-linear compensation circuit and data-carrier store all are connected in described microprocessor, and described signal Processing subelement is connected described general interface unit by described analog to digital conversion sample circuit in regular turn with microprocessor.
9. intelligent gas sensor according to claim 8 is characterized in that, described data storage subelement is an Electrically Erasable Read Only Memory, and described Electrically Erasable Read Only Memory is connected in described microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206455578U CN201885990U (en) | 2010-12-07 | 2010-12-07 | Intelligent gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206455578U CN201885990U (en) | 2010-12-07 | 2010-12-07 | Intelligent gas sensor |
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| Publication Number | Publication Date |
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| CN201885990U true CN201885990U (en) | 2011-06-29 |
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| CN2010206455578U Expired - Lifetime CN201885990U (en) | 2010-12-07 | 2010-12-07 | Intelligent gas sensor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104807968A (en) * | 2015-05-11 | 2015-07-29 | 杭州北辰光电技术有限公司 | Gas sensor and identification and calibration method thereof |
| CN106652426A (en) * | 2016-11-25 | 2017-05-10 | 贵州大学 | A PM2.5 collector based on RS485 communication interfaces |
| CN107884517A (en) * | 2017-12-06 | 2018-04-06 | 河南省智仪系统工程有限公司 | Between digital sensor and transmitter to insert attachment structure |
| CN108896108A (en) * | 2018-06-08 | 2018-11-27 | 深圳市无眼界科技有限公司 | A kind of decoupled sensor arrangement and online gas detector |
-
2010
- 2010-12-07 CN CN2010206455578U patent/CN201885990U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104807968A (en) * | 2015-05-11 | 2015-07-29 | 杭州北辰光电技术有限公司 | Gas sensor and identification and calibration method thereof |
| CN106652426A (en) * | 2016-11-25 | 2017-05-10 | 贵州大学 | A PM2.5 collector based on RS485 communication interfaces |
| CN107884517A (en) * | 2017-12-06 | 2018-04-06 | 河南省智仪系统工程有限公司 | Between digital sensor and transmitter to insert attachment structure |
| CN107884517B (en) * | 2017-12-06 | 2024-02-13 | 河南省智仪系统工程有限公司 | Interposed connection structure between digital sensor and transmitter |
| CN108896108A (en) * | 2018-06-08 | 2018-11-27 | 深圳市无眼界科技有限公司 | A kind of decoupled sensor arrangement and online gas detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: AEGIS INDUSTRIAL SAFETY EQUIPMENT CO., LTD. Free format text: FORMER NAME: AEGIS INDUSTRIAL SAFETY CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201204 Shanghai city Pudong New Area Lianxi road 1210 Building No. 3 Patentee after: SHANGHAI AEGIS INDUSTRIAL SAFETY CORPORATION Address before: 201204 Shanghai city Pudong New Area Lianxi road 1210 Building No. 3 Patentee before: Shanghai Yijie Industrial Security Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |