CN203308522U - Simple gas alarming circuit device - Google Patents
Simple gas alarming circuit device Download PDFInfo
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- CN203308522U CN203308522U CN2013203918321U CN201320391832U CN203308522U CN 203308522 U CN203308522 U CN 203308522U CN 2013203918321 U CN2013203918321 U CN 2013203918321U CN 201320391832 U CN201320391832 U CN 201320391832U CN 203308522 U CN203308522 U CN 203308522U
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- biasing resistor
- bias resistor
- power supply
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Abstract
The utility model relates to a simple gas alarming circuit device. The simple gas alarming circuit device comprises a main power supply (1), a sensor power supply (10), a signal-sound device (2), a silicon controlled rectifier (3), a capacitor (4), a potentiometer (5), a first bias resistor (6), a second bias resistor (7) and a semiconductor sensor (8), wherein the silicon controlled rectifier (3) and the semiconductor sensor (8) respectively take electricity from the main power supply (1), the output port of the silicon controlled rectifier (3) is respectively connected to the input ports of the signal-sound device (2) and the capacitor (4), the first output port of the semiconductor sensor (8) is respectively connected to the input ports of the first bias resistor (6) and the second bias resistor (7), and the output ports of the signal-sound device (2), the capacitor (4), the first bias resistor (6) and the second bias resistor (7) are respectively connected to the other end of the main power supply (1); the potentiometer (5) is connected between the second output port of the semiconductor sensor (8) and the control electrode of the silicon controlled rectifier (3); the two ends of the sensor power supply (10) are connected between the first input port and the second input port of the semiconductor sensor (8). The simple gas alarming circuit device is high in complete machine sensitivity, stable and reliable in performance, low in cost, few in components and parts, small in size and easy to carry about.
Description
Technical field
The utility model relates to a kind of circuit arrangement of plain type gas alarming.
Background technology
Gas Disaster is one of China's coal-mine Major Natural Disasters, has become the principal contradiction of restriction Safety of Coal Mine Production at present.At actual job with in producing, it is particularly important that the detection alarm of gas just seems.Gas is in a single day blunt excessive, very easily causes the accident generations such as fire, and people's productive life is caused to the heavy losses of property.
The explosion-proof measuring instrument of gas alarm apparatus, mixed combustible gas of China's production at present and the inflammable and explosive checkout gear used such as mine and improvement shape etc., all generally to using the platinum filament catalysis element as detecting element, it is placed in to an arm of balanced bridge, and be energized by the power and be heated to operating temperature, fuel gas advances people's air chamber and on the platinum filament catalysis element, carries out flameless combustion, emit oxidation reaction heat, cause that the platinum filament element heats up.The resistance of platinum filament increases, and destroys bridge balance, detects Of Internal Risistance Of A Microampere Meter as the signal source, through amplifying, starts oscillator, promotes the sound and light alarm element, obtains the sound and light alarm effect.This class warning instrument, the one, volume is larger. is not easy to carry, the 2nd, the components and parts that adopt are many, the price comparison costliness, great majority all, more than hundreds of units, adopt discrete component many, and discreteness is larger, the machine debugging more complicated.Though some producer has done a little improvement to original testing instrument device in recent years, the instrument volume also dwindles to some extent, but does not break away from original mentality of designing.
The utility model content
Technical problem to be solved in the utility model, just be to provide a kind of circuit arrangement of plain type gas alarming, adopts novel gas sensor to replace original platinum filament to detect the bridge road, improves the sensitivity of inspection side, reduces inner member.
Solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of circuit arrangement of plain type gas alarming is characterized in that: the main power source 1, probe power 10, information ring device 2, controllable silicon 3, capacitor 4, potentiometer 5, the first biasing resistor 6, the second biasing resistor 7 and the semiconductor transducer 8 that comprise electrical connection; Described controllable silicon 3 and semiconductor transducer 8 are respectively from main power source 1 power taking, the output port of controllable silicon 3 is connected on respectively the input port of information ring device 2 and capacitor 4, semiconductor transducer 8 first output ports are connected on respectively the input port of the first biasing resistor 6 and the second biasing resistor 7, and information ring device 2, capacitor 4, the first biasing resistor 6 and the output port of the second biasing resistor 7 together are connected the other end of main power source 1; Described potentiometer 5 is connected to semiconductor transducer 8 second output ports and controllable silicon 3 is controlled between the utmost point; Described probe power 10 two ends are connected between the first input end mouth and the second input port of semiconductor transducer 8.
Described main power source 1 is provided with circuit switching 9.
Beneficial effect: a kind of circuit arrangement of plain type gas alarming is provided, adopts novel gas sensor to replace original platinum filament to detect the bridge road, improve the sensitivity of inspection side, reduce inner member.Warning circuit adopts integrated circuit, and alarm adopts superminiature information ring device.Machine sensitivity is high, stable and reliable for performance, and cost is low, and components and parts are few, and volume is little easy to carry.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model device.
In figure: 1-main power source, 2-information ring device, 3-controllable silicon, 4-capacitor, 5-potentiometer, 6-the first biasing resistor, 7-the second biasing resistor, 8-semiconductor transducer, 9-circuit switching, 10-probe power.
The specific embodiment
As shown in Figure 1, a kind of circuit arrangement of plain type gas alarming is characterized in that: the main power source 1, probe power 10, information ring device 2, controllable silicon 3, capacitor 4, potentiometer 5, the first biasing resistor 6, the second biasing resistor 7 and the semiconductor transducer 8 that comprise electrical connection; Described controllable silicon 3 and semiconductor transducer 8 are respectively from main power source 1 power taking, the output port of controllable silicon 3 is connected on respectively the input port of information ring device 2 and capacitor 4, semiconductor transducer 8 first output ports are connected on respectively the input port of the first biasing resistor 6 and the second biasing resistor 7, and information ring device 2, capacitor 4, the first biasing resistor 6 and the output port of the second biasing resistor 7 together are connected the other end of main power source 1; Described potentiometer 5 is connected to semiconductor transducer 8 second output ports and controllable silicon 3 is controlled between the utmost point; Described probe power 10 two ends are connected between the first input end mouth and the second input port of semiconductor transducer 8.
Described main power source 1 is provided with circuit switching 9.
When the gas such as gas or smog reached finite concentration, the resistance value of semiconductor transducer 8 inside reduced, and electric current is passed through, and gives controllable silicon 3 one signals of telecommunication, directly triggers the control utmost point of controllable silicon 3, makes controllable silicon 3 conductings.At this moment information ring device 2 can give the alarm, and around the warning staff, has certain density gas.Can select suitable detection sensitivity by the resistance of adjusting potentiometer 5 simultaneously.
Claims (2)
1. the circuit arrangement of a plain type gas alarming, is characterized in that: the main power source (1), probe power (10), information ring device (2), controllable silicon (3), capacitor (4), potentiometer (5), the first biasing resistor (6), the second biasing resistor (7) and the semiconductor transducer (8) that comprise electrical connection; Described controllable silicon (3) and semiconductor transducer (8) are respectively from main power source (1) power taking, the output port of controllable silicon (3) is connected on respectively the input port of information ring device (2) and capacitor (4), semiconductor transducer (8) first output ports are connected on respectively the input port of the first biasing resistor (6) and the second biasing resistor (7), and information ring device (2), capacitor (4), the first biasing resistor (6) and the output port of the second biasing resistor (7) together are connected the other end of main power source (1); Described potentiometer (5) is connected to semiconductor transducer (8) second output ports and controllable silicon (3) is controlled between the utmost point; Described probe power (10) two ends are connected between the first input end mouth and the second input port of semiconductor transducer (8).
2. the circuit arrangement of plain type gas alarming according to claim 1, it is characterized in that: described main power source (1) is provided with circuit switching (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203918321U CN203308522U (en) | 2013-06-28 | 2013-06-28 | Simple gas alarming circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203918321U CN203308522U (en) | 2013-06-28 | 2013-06-28 | Simple gas alarming circuit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203308522U true CN203308522U (en) | 2013-11-27 |
Family
ID=49614737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203918321U Expired - Fee Related CN203308522U (en) | 2013-06-28 | 2013-06-28 | Simple gas alarming circuit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203308522U (en) |
-
2013
- 2013-06-28 CN CN2013203918321U patent/CN203308522U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20140628 |
|
| EXPY | Termination of patent right or utility model |