CN209070699U - A kind of imflammable gas detector - Google Patents
A kind of imflammable gas detector Download PDFInfo
- Publication number
- CN209070699U CN209070699U CN201821939246.5U CN201821939246U CN209070699U CN 209070699 U CN209070699 U CN 209070699U CN 201821939246 U CN201821939246 U CN 201821939246U CN 209070699 U CN209070699 U CN 209070699U
- Authority
- CN
- China
- Prior art keywords
- imflammable gas
- gas detector
- group
- microcontroller
- catalytic combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
It includes: catalytic combustion type sensor, microcontroller, charactron, Switching Power Supply and reduction voltage circuit that the utility model, which provides a kind of imflammable gas detector,；The microcontroller output is connected with the charactron, the catalytic combustion sensor is connected with the microcontroller input, the switched power output is connected with the reduction voltage circuit and the microcontroller, the reduction voltage circuit is connected with the catalytic combustion sensor, based on the utility model, it can effectively avoid catalytic combustion type sensor electric current excessive, cause to generate heat, so that sensor failure, it is equipped with relay normally open contact on the detector, for being connected with external cell valve, imflammable gas can be blocked to enter.
Description
Technical field
The utility model relates to imflammable gas leak detection field, in particular to a kind of imflammable gas detector.
Background technique
When industrial, usually imflammable gas is transmitted by pipeline, is easy to appear leakage in pipeline turning place
Phenomenon, unprocessed if gas is revealed for a long time, temperature raising can generate the dangerous situations such as explosion, and imflammable gas traditionally
The supply voltage that detection sensor on detector uses is consistent with the supply voltage of chip, and electric current is excessive, causes sensor electric
It flows through big and causes serious phenomenon of generating heat.
Utility model content
The utility model provides a kind of imflammable gas detector, and being connected between adjacent detector can be led to host
News, are respectively powered catalytic combustion type sensor and chip by reduction voltage circuit, avoid the confession of catalytic combustion type sensor
Piezoelectric voltage is excessive, causes its electric current excessive, causes to generate heat, so that sensor failure.
The utility model embodiment provides a kind of imflammable gas detector, comprising: catalytic combustion type sensor, micro-control
Device, charactron, Switching Power Supply and reduction voltage circuit processed；
The microcontroller output is connected with the charactron, and the catalytic combustion sensor and the microcontroller are defeated
Enter end to be connected, the switched power output is connected with the reduction voltage circuit and the microcontroller, the reduction voltage circuit and institute
Catalytic combustion sensor is stated to be connected.
Preferably, the charactron is group of four figures pipe；
The group of four figures pipe is installed on imflammable gas detector surface.
Preferably, further includes: relay；
The coil of the relay is connected with the microcontroller output, and the relay is equipped with one group of normally opened touching
Point, for connecting external electrical magnet valve.
Preferably, the imflammable gas detector is equipped with first group of DC supply input and second group of DC power supply
Input terminal；
First group of DC supply input is connect with the Switching Power Supply, and second group of DC supply input is used
It is connected in first group of DC supply input with adjacent imflammable gas detector.
Preferably, the imflammable gas detector is equipped with first group of 485 communication interface and second group of 485 communication connects
Mouthful；
First group of 485 communication interface is connected by Shielded Twisted Pair with host, second group of 485 communication interface
It is connected with first group of 485 communication interface of adjacent imflammable gas detector.
Preferably, between the imflammable gas detector and the communications protocol of imflammable gas detector and host is
RS485 agreement.
Preferably, the chip model of the microcontroller is PIC16F1933.
The utility model provides a kind of imflammable gas detector, and host is communicated between adjacent detector, is visiting
It surveys and is equipped with reduction voltage circuit in device, respectively catalytic combustion type sensor and chip is powered, and has effectively been kept away to chip power supply electricity
It presses through low or the excessive phenomenon of catalytic combustion type sensor supply voltage is generated, avoid catalytic combustion type sensor electric current mistake
Greatly, cause to generate heat, so that sensor failure, is equipped with relay normally open contact on the detector, for being connected with external cell valve,
Imflammable gas can be blocked to enter.
Detailed description of the invention
Fig. 1 is the utility model embodiment imflammable gas panel detector structure schematic diagram.
Fig. 2 is the utility model embodiment microcontroller pin schematic diagram.
Fig. 3 is the utility model embodiment system power supply circuit diagram.
Fig. 4 is the utility model embodiment probe power circuit diagram.
Fig. 5 is the utility model embodiment sensor signal conditioning circuit schematic diagram.
Fig. 6 is the utility model embodiment control relay circuit schematic diagram.
Fig. 7 is the utility model embodiment charactron circuit diagram.
Fig. 8 is the utility model embodiment imflammable gas detector external cabling schematic diagram.
Fig. 9 is 485 communicating circuit schematic diagram of the utility model embodiment.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this
Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment is fallen within the protection scope of the utility model.Therefore, the implementation to the utility model provided in the accompanying drawings below
The detailed description of mode is not intended to limit the range of claimed invention, but is merely representative of the utility model
Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, fall within the protection scope of the utility model.
It elaborates below in conjunction with attached drawing to specific embodiment of the utility model.
Referring to Fig. 1, the utility model embodiment provides a kind of imflammable gas detector, comprising: catalytic combustion type
Sensor 02, microcontroller 01, charactron 05, Switching Power Supply 03 and reduction voltage circuit 04；
01 output end of microcontroller is connected with the charactron 05, the catalytic combustion sensor 02 with it is described micro-
01 input terminal of controller is connected, and defeated 03 outlet of Switching Power Supply is connected with the reduction voltage circuit 04 and the microcontroller 01,
The reduction voltage circuit 04 is connected with the catalytic combustion sensor 02.
Fig. 2, Fig. 3, Fig. 4 and Fig. 5 are please referred to, Fig. 2 is that the chip model of the microcontroller is PIC16F1933, and Fig. 3 is
External ac power source AC 220V is changed into DC power supply DC 24V by the Switching Power Supply 03, passes through decompression by system power supply
DC power supply DC 24V is changed into DC 5V and used for system by circuit, the chip of the microcontroller 01 and the charactron 05
Supply voltage is DC 5V, and Fig. 4 is the power supply of the catalytic combustion sensor 02, and DC 5V is changed into DC by reduction voltage circuit
2.5V provides a stable supply voltage for the catalytic combustion sensor 02, avoids the catalytic combustion sensor 02
Supply voltage is excessive, excessive so as to cause electric current, causes the catalytic combustion sensor 02 to be generated heat, so that sensor failure.Figure
5 be the signal amplification circuit of the catalytic combustion sensor 02, and the imflammable gas analog signals that will acquire pass through amplification,
The microcontroller 01 is reached again, and analog signals are changed into digital quantity signal by operation by microcontroller 01, later by defeated
Exit port is exported to the charactron 05.
Preferably, the charactron 05 is group of four figures pipe；
Referring to Fig. 6, Fig. 6 is the circuit diagram of the charactron, the group of four figures pipe is installed on imflammable gas
Detector surface, for showing the concentration of current imflammable gas.
Preferably, further includes: relay 06；
Referring to Fig. 7, relay circuit schematic diagram described in Fig. 7, the coil of the relay 06 and the microcontroller 01
Output end is connected, and the relay 06 is equipped with one group of normally opened contact, dense when imflammable gas for connecting external electrical magnet valve
When angle value is greater than set value, the microcontroller exports the coil of a signal to the relay 06, and the coil obtains
Electricity, the relay normally open.
Preferably, the imflammable gas detector is equipped with first group of DC supply input and second group of DC power supply
Input terminal；
First group of DC supply input is connect with the Switching Power Supply 03, second group of DC supply input
It is connected for first group of DC supply input with adjacent imflammable gas detector.
Preferably, the imflammable gas detector is equipped with first group of 485 communication interface and second group of 485 communication connects
Mouthful；
First group of 485 communication interface is connected by Shielded Twisted Pair with host, second group of 485 communication interface
It is connected with first group of 485 communication interface of adjacent imflammable gas detector.
Referring to Fig. 8, Fig. 8 is the external wiring diagram of imflammable gas detector, outside is equipped with two group of 485 communication interface
And two groups of Switching Power Supply input ports avoid a plurality of line from connecting back to host, make for connecting adjacent imflammable gas detector
Obtain complex circuit.
Preferably, between the imflammable gas detector and the communications protocol of imflammable gas detector and host is
RS485 agreement.
Referring to Fig. 9, the imflammable gas detector 10 is led to the master controller 20 using RS485 agreement
News, route uses Shielded Twisted Pair, effective to reduce and eliminate the distribution capacity generated between two 485 communication lines and come from
The common mode interference generated around connection.
A kind of imflammable gas detector is provided based on the utility model, host is communicated between adjacent detector,
Reduction voltage circuit is equipped in detector, respectively catalytic combustion type sensor and chip is powered, and has effectively been kept away and has been supplied chip
Piezoelectric voltage is too low or generates to the excessive phenomenon of catalytic combustion type sensor supply voltage, avoids catalytic combustion type sensor electric current
It is excessive, cause to generate heat, so that sensor failure, is equipped with relay normally open contact on the detector, be used for and external cell valve phase
Even, imflammable gas can be blocked to enter.
Above are merely preferred embodiments of the utility model, the protection scope of the utility model is not limited merely to above-mentioned
Embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.
Claims (7)
1. a kind of imflammable gas detector characterized by comprising catalytic combustion type sensor, microcontroller, charactron,
Switching Power Supply and reduction voltage circuit；
The microcontroller output is connected with the charactron, the catalytic combustion sensor and the microcontroller input
It is connected, the switched power output is connected with the reduction voltage circuit and the microcontroller, and the reduction voltage circuit is urged with described
Change combustion sensor to be connected.
2. a kind of imflammable gas detector according to claim 1, which is characterized in that the charactron is the group of four figures
Pipe；
The group of four figures pipe is installed on imflammable gas detector surface.
3. a kind of imflammable gas detector according to claim 1, which is characterized in that further include: relay；
The coil of the relay is connected with the microcontroller output, and the relay is equipped with one group of normally opened contact, uses
In connection external electrical magnet valve.
4. a kind of imflammable gas detector according to claim 1, which is characterized in that the imflammable gas detector
It is equipped with first group of DC supply input and second group of DC supply input；
First group of DC supply input is connect with the Switching Power Supply, second group of DC supply input be used for
First group of DC supply input of adjacent imflammable gas detector is connected.
5. a kind of imflammable gas detector according to claim 1, which is characterized in that the imflammable gas detector
It is equipped with first group of 485 communication interface and second group of 485 communication interface；
First group of 485 communication interface is connected by Shielded Twisted Pair with host, second group of 485 communication interface with it is adjacent
Imflammable gas detector first group of 485 communication interface be connected.
6. a kind of imflammable gas detector according to claim 5, which is characterized in that the imflammable gas detector
Between and the communications protocol of imflammable gas detector and host be RS485 agreement.
7. a kind of imflammable gas detector according to claim 1, which is characterized in that the microcontroller it is chip-shaped
Number be PIC16F1933.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821939246.5U CN209070699U (en) | 2018-11-23 | 2018-11-23 | A kind of imflammable gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821939246.5U CN209070699U (en) | 2018-11-23 | 2018-11-23 | A kind of imflammable gas detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209070699U true CN209070699U (en) | 2019-07-05 |
Family
ID=67100240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821939246.5U Expired - Fee Related CN209070699U (en) | 2018-11-23 | 2018-11-23 | A kind of imflammable gas detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209070699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433022A (en) * | 2019-08-26 | 2021-03-02 | 无锡统安安全科技有限公司 | Explosion-proof multi-relay gas detector |
-
2018
- 2018-11-23 CN CN201821939246.5U patent/CN209070699U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433022A (en) * | 2019-08-26 | 2021-03-02 | 无锡统安安全科技有限公司 | Explosion-proof multi-relay gas detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190705 Termination date: 20211123 |