CN102852557A - Mining smoke sensor - Google Patents
Mining smoke sensor Download PDFInfo
- Publication number
- CN102852557A CN102852557A CN2012103169559A CN201210316955A CN102852557A CN 102852557 A CN102852557 A CN 102852557A CN 2012103169559 A CN2012103169559 A CN 2012103169559A CN 201210316955 A CN201210316955 A CN 201210316955A CN 102852557 A CN102852557 A CN 102852557A
- Authority
- CN
- China
- Prior art keywords
- pin
- resistance
- operational amplifier
- diode
- smoke sensor
- 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.)
- Pending
Links
Images
Landscapes
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses a mining smoke sensor, belonging to the technical field of mining safety facilities. The mining smoke sensor comprises a power supply module circuit, a heating delay and alarm output circuit and a smoke sensor module circuit, wherein the heating delay and alarm output circuit is connected with the smoke sensor module circuit, the power supply module circuit is connected with the heating delay and alarm output circuit and the smoke sensor module circuit, the heating delay and alarm output circuit and the smoke sensor module circuit are powered up, the power supply module circuit comprises diodes D7 and D8, capacitors C1 and C2, an inductor L1 and a voltage reduction stabilizer U8, the heating delay and alarm output circuit comprises resistors R3-R13, R16-18, a rheostat R19, capacitors C3-C5, diodes D1-D6, operational amplifiers U1A, U1B, U2A, U2B, U3A and U3B, a triode Q1 and a bicolor light emitting diode LED1. The mining smoke sensor has the advantages of small loss power, low heating quantity and capability of increasing the working reliability.
Description
Technical field
The invention belongs to the coalmining safety facility technical field, be specifically related to a kind of mine smoke sensor
Background technology
Smoke Sensor is mainly used in having under the coal mine place of gas and coal dust explosion hazard and fire hazard, can the smog that the burnings such as rubber, plastics, coal produce be detected, remote measurement and concentrating monitors.Have that resistance to corrosion is strong, high sensitivity, simple in structure, power consumption is little, cost is low and the characteristics such as easy maintenance.The Smoke Sensor that exists on the market now mainly contains the Smoke Sensor that utilizes physicochemical properties, utilize the Smoke Sensor of physical property and utilize three kinds of the Smoke Sensors of electrochemical properties, wherein extensive with the Smoke Sensor of electrochemical properties, such as current mode Smoke Sensor and electromotive force type gas sensor etc.The Smoke Sensor of described electrochemical properties generally all is provided with power module circuitry, to be other circuit supplies after utilizing the three-terminal regulator block voltage stabilizing traditionally, number be CN201837576U disclosed " mine smoke sensor " such as the Chinese utility model patent notice of authorization, the calorific value of three-terminal regulator block is large, power attenuation is high, less stable, easily damage, increased use cost.
Therefore, be necessary existing mine smoke sensor is improved, reduce the calorific value of power module circuitry, technical scheme described below produces under this background
Summary of the invention
The object of the present invention is to provide the mine smoke sensor of the simple and good reliability of a kind of circuit structure.
The objective of the invention is to reach like this, a kind of mine smoke sensor, comprise power module circuitry, the heating time-delay that is used for output alarm voltage Vout and alarm output circuit and for the Smoke Sensor modular circuit of output signal voltage Vout1, the heating time-delay is connected with the Smoke Sensor modular circuit with alarm output circuit, power module circuitry is connected with alarm output circuit and Smoke Sensor modular circuit with the heating time-delay, and power to heating time-delay and alarm output circuit and Smoke Sensor modular circuit, described power module circuitry comprises diode D7, D8, capacitor C 1, C2, inductance L 1 and voltage-releasing voltage stabilizer U8, the positive pole of diode D7 meets dc source+12V, the negative pole of diode D7 connects the positive pole of capacitor C 1 and 1 pin of voltage-releasing voltage stabilizer U8,2 pin of voltage-releasing voltage stabilizer U8 connect the negative pole of diode D8 and an end of inductance L 1, the positive pole of another termination capacitor C 2 of inductance L 1 and 4 pin of voltage-releasing voltage stabilizer U8 and output DC source VCC, the negative pole of capacitor C 1,3 of voltage-releasing voltage stabilizer U8,5 pin, the negative pole common ground of the positive pole of diode D8 and capacitor C 2, described heating time-delay and alarm output circuit comprise resistance R 3～R13, R16～R18, rheostat R19, capacitor C 3～C5, diode D1～D6, operational amplifier U1A, U1B, U2A, U2B, U3A, U3B, triode Q1 and dichromatic LED LED1,1 pin of one termination dichromatic LED LED1 of resistance R 3, the end of the 2 pin connecting resistance R16 of dichromatic LED LED1,7 pin of another termination operational amplifier U1B of resistance R 16 and the negative pole of diode D1,6 pin of operational amplifier U1B and 2 pin of operational amplifier U1A, one end of resistance R 5,6 pin of operational amplifier U2B, 2 pin of operational amplifier U2A and an end of resistance R 6 connect, the end of the 1 pin connecting resistance R18 of operational amplifier U1A and 3 pin of dichromatic LED LED1, the base stage of another termination triode Q1 of resistance R 18, the end of the colelctor electrode connecting resistance R17 of triode Q1 is also exported described alarm voltage Vout, be used for connecting the next stage control device, 3 pin of operational amplifier U1A and an end of capacitor C 3, one end of resistance R 4, one end of resistance R 9 and the positive pole of diode D1 connect, the negative pole of another terminating diode D2 of resistance R 9, the positive pole of diode D2 connects 7 pin of operational amplifier U3B, the end of the 6 pin connecting resistance R13 of operational amplifier U3B and an end of resistance R 12,1 of the other end of resistance R 13 and rheostat R19,3 pin of 2 pin and operational amplifier U3A connect, 1 pin of operational amplifier U3A connects the negative pole of diode D5, one end of the positive pole of diode D5 and resistance R 8, one end of resistance R 7 and the positive pole of diode D4 connect, the negative pole of another terminating diode D3 of resistance R 8 and 5 pin of operational amplifier U2B, the positive pole of diode D3 connects 5 pin of operational amplifier U1B and 7 pin of operational amplifier U2B, the negative pole of diode D4 connects 1 pin of operational amplifier U2A, 3 pin of operational amplifier U2A and an end of resistance R 10, the positive pole of the positive pole of diode D6 and capacitor C 4 connects, 2 pin of operational amplifier U3A and 5 pin of operational amplifier U3B, one end of capacitor C 5 and an end of resistance R 11 connect, the signal voltage Vout1 of described Smoke Sensor modular circuit 3 outputs of another termination of resistance R 11, the other end of resistance R 17,8 pin of operational amplifier U1A, the other end of resistance R 5, the other end of resistance R 7,8 pin of operational amplifier U3A, 8 pin of operational amplifier U2A, the other end of resistance R 10, the other end of the negative pole of diode D6 and resistance R 12 meets dc source VCC jointly, the other end of resistance R 3, the emitter stage of triode Q1,4 pin of operational amplifier U1A, the other end of capacitor C 3, the other end of resistance R 4, the other end of resistance R 6,4 pin of operational amplifier U3A, the other end of capacitor C 5, the negative pole of capacitor C 4, the 4 pin common grounds of 3 pin of rheostat R19 and operational amplifier U2A.
The present invention is owing to having adopted said structure, the advantage that has is: adopted switch type buck regulator in the power module circuitry, have the characteristics such as loss power is little, calorific value is low with respect to traditional circuit of three-terminal voltage-stabilizing integrated, thereby increased the reliability of the work of Smoke Sensor.
Description of drawings
Fig. 1 is theory diagram of the present invention.
Fig. 2 is the electrical schematic diagram of power module circuitry shown in Figure 1.
Fig. 3 is heating time-delay shown in Figure 1 and the electrical schematic diagram of alarm output circuit.
Fig. 4 is the electrical schematic diagram of Smoke Sensor modular circuit shown in Figure 1.
The specific embodiment
In order to make the public can fully understand technical spirit of the present invention and beneficial effect; the applicant will describe in detail the specific embodiment of the present invention below by reference to the accompanying drawings; but the applicant is not restriction to technical scheme to the description of embodiment, anyly makes form and immaterial variation all should be considered as protection scope of the present invention according to the present invention's design.
See also Fig. 1, a kind of mine smoke sensor comprises power module circuitry 1, heating time-delay and alarm output circuit 2, Smoke Sensor modular circuit 3, and the heating time-delay is connected with Smoke Sensor modular circuit 3 with alarm output circuit 2.Described Smoke Sensor modular circuit 3 is used for gathering the smog situation under the current environment, sends a signal to heating time-delay and alarm output circuit 2.The signal that 2 pairs of Smoke Sensor modular circuits 3 of described heating time-delay and alarm output circuit are sent to compares judges processing, and output alarm signal is to the next stage control device.Power module circuitry 1 is supplied with respectively heating time-delay and alarm output circuit 2 and Smoke Sensor modular circuit 3 with the dc source that main circuit provides by conversion.
See also Fig. 2, described power module circuitry 1 comprises diode D7, D8, capacitor C 1, C2, inductance L 1 and voltage-releasing voltage stabilizer U8, and described voltage-releasing voltage stabilizer U8 is switch type buck regulator, is specially LM2576.The dc source that main circuit provides is transformed to dc source VCC after accessing voltage-releasing voltage stabilizer U8 by diode D7, and capacitor C 1 is input filtering electric capacity, and diode D8 is reverse fly-wheel diode, and capacitor C 2 and inductance L 1 form the LC filter circuit.
See also Fig. 3, described heating time-delay and alarm output circuit 2 comprise resistance R 3～R13, R16～R18, rheostat R19, capacitor C 3～C5, diode D1～D6, operational amplifier U1A, U1B, U2A, U2B, U3A, U3B, triode Q1 and dichromatic LED LED1, and dichromatic LED LED1 adopts red and green color herein.After the main circuit energising, dc source VCC place in circuit provides anti-phase comparative voltage for operational amplifier U1A, U1B, U2A, U2B by resistance R 5, gives simultaneously capacitor C 4 chargings.When capacitor C 4 had just begun to charge, the positive phase voltage of operational amplifier U2A was less than reverse voltage, output low level, thereby by the voltage between diode D4 pull down resistor R7, the R8; When capacitor C 4 after charging a period of times, the positive phase voltage of operational amplifier U2A is greater than reverse voltage, the output high level, thus make the voltage between resistance R 7, the R8 can not be drop-down by diode D4.The positive phase voltage of operational amplifier U3A is provided with rheostat R19 by resistance R 13, and changes with the variation of rheostat R19 resistance.The reverse voltage of operational amplifier U3A is provided through resistance R 11 by the signal voltage Vout1 of Smoke Sensor modular circuit 3 outputs.When the positive phase voltage of operational amplifier U3A during less than reverse voltage, output low level, thereby by the voltage between diode D5 pull down resistor R7, the R8; When the positive phase voltage of operational amplifier U3A during greater than reverse voltage, output high level, thereby make the voltage between resistance R 7, the R8 can not be drop-down by diode D5.Only have when the output of operational amplifier U2A, U3A is high level, just can make the positive phase voltage that is added in operational amplifier U2B be higher than reverse voltage, by relatively exporting high level, further relatively export high level with operational amplifier U1B again, make 1, the 2 pin conductings of dichromatic LED LED1, send green glow, the indication circuit power connection can work, and diode D3 plays unidirectional feedback effect.The reverse voltage of operational amplifier U3B is provided by resistance R 12, R13, and can regulate by rheostat R19, and positive phase voltage is provided through resistance R 11 by the signal voltage Vout1 of Smoke Sensor modular circuit 3 outputs.When the positive phase voltage of operational amplifier U3B during greater than reverse voltage, the output high level, diac D2 conducting also is added to voltage the positive of operational amplifier U1A, through relatively exporting high level, make 1, the 3 pin conductings of dichromatic LED LED1, send ruddiness, while trigger triode Q1, make warning output voltage V out become low level by high level, the work of next stage control device, the startups such as control atomization mechanism.In this process, after capacitor C 4 chargings were finished, as long as Power supply is normal, the positive phase voltage of operational amplifier U2A was always greater than reverse voltage, and according to above-mentioned analysis as can be known, operational amplifier U1B will export high level.If operational amplifier U1B output low level can be undertaken by diode D1 unidirectional drop-downly, make the output of operational amplifier U1A unchanged.
See also Fig. 4 and in conjunction with Fig. 3, described Smoke Sensor modular circuit 3 comprises resistance R 14, R15, touch-switch S1 and smog probe B, in the present embodiment, the smog probe B adopts MQ2 air-sensitive formula smog probe.After the main circuit energising, dc source VCC place in circuit is for the heater strip H-H work of smog probe B, and behind the heater strip H-H preheating certain hour, the smog probe B could normally detect smog.When having detected cigarette, 4,6 pin voltages of smog probe B increase with the rising of smokescope, and the signal voltage Vout1 of output raises.At this moment, regulate the resistance of the rheostat R19 in heating time-delay and the alarm output circuit 2, make the positive phase voltage of operational amplifier U3B greater than reverse voltage, the output high level, diac D2 conducting also is added to voltage the positive terminal of operational amplifier U1A, operational amplifier U1A exports high level, makes 1, the 3 pin conductings of dichromatic LED LED1, sends ruddiness.Make simultaneously warning output voltage V out become low level by high level, start the next stage control circuit and make corresponding indication, such as starting atomization mechanism etc.When smog reduces gradually, the signal voltage Vout1 of output diminishes, when the positive phase voltage of operational amplifier U3B during less than reverse voltage, operational amplifier U3B output low level, diode D2 cut-off, the positive phase voltage of operational amplifier U1A be less than reverse voltage, output low level, make 1, the 3 pin cut-off of dichromatic LED LED1, ruddiness extinguishes a BG light.Make simultaneously warning output voltage V out become high level by low level, start the next stage control circuit and make corresponding indication, atomization mechanism is quit work.Whether in addition, touch-switch S1 is test button, presses touch-switch S1, and 4,6 pin voltages of smog probe B raise, and the signal voltage Vout1 of output raises, can work with alarm output circuit 2 thereby can test the heating time-delay.
Adopt switch type buck regulator in the power module circuitry 1 of the present invention, had the characteristics such as loss power is little, calorific value is low with respect to traditional circuit of three-terminal voltage-stabilizing integrated; In addition, heating time-delay has been adopted full comparison circuit with alarm output circuit 2, and simple and practical, dependable performance, fault are easy to get rid of; Smoke Sensor modular circuit 3 can require to adopt different smog probes for different environmental characteristicses, different detection, thereby so that this circuit working good stability, antijamming capability is strong and image data is accurate, has reached goal of the invention
Claims (1)
1.
A kind of mine smoke sensor, comprise power module circuitry (1), the heating time-delay that is used for output alarm voltage Vout and alarm output circuit (2) and for the Smoke Sensor modular circuit (3) of output signal voltage Vout1, the heating time-delay is connected with Smoke Sensor modular circuit (3) with alarm output circuit (2), power module circuitry (1) is connected with alarm output circuit (2) and Smoke Sensor modular circuit (3) with the heating time-delay, and heating time-delay and alarm output circuit (2) and Smoke Sensor modular circuit (3) are powered, described power module circuitry (1) comprises diode D7, D8, capacitor C 1, C2, inductance L 1 and voltage-releasing voltage stabilizer U8, the positive pole of diode D7 meets dc source+12V, the negative pole of diode D7 connects the positive pole of capacitor C 1 and 1 pin of voltage-releasing voltage stabilizer U8,2 pin of voltage-releasing voltage stabilizer U8 connect the negative pole of diode D8 and an end of inductance L 1, the positive pole of another termination capacitor C 2 of inductance L 1 and 4 pin of voltage-releasing voltage stabilizer U8 and output DC source VCC, the negative pole of capacitor C 1,3 of voltage-releasing voltage stabilizer U8,5 pin, the negative pole common ground of the positive pole of diode D8 and capacitor C 2, described heating time-delay and alarm output circuit (2) comprise resistance R 3～R13, R16～R18, rheostat R19, capacitor C 3～C5, diode D1～D6, operational amplifier U1A, U1B, U2A, U2B, U3A, U3B, triode Q1 and dichromatic LED LED1,1 pin of one termination dichromatic LED LED1 of resistance R 3, the end of the 2 pin connecting resistance R16 of dichromatic LED LED1,7 pin of another termination operational amplifier U1B of resistance R 16 and the negative pole of diode D1,6 pin of operational amplifier U1B and 2 pin of operational amplifier U1A, one end of resistance R 5,6 pin of operational amplifier U2B, 2 pin of operational amplifier U2A and an end of resistance R 6 connect, the end of the 1 pin connecting resistance R18 of operational amplifier U1A and 3 pin of dichromatic LED LED1, the base stage of another termination triode Q1 of resistance R 18, the end of the colelctor electrode connecting resistance R17 of triode Q1 is also exported described alarm voltage Vout, be used for connecting the next stage control device, 3 pin of operational amplifier U1A and an end of capacitor C 3, one end of resistance R 4, one end of resistance R 9 and the positive pole of diode D1 connect, the negative pole of another terminating diode D2 of resistance R 9, the positive pole of diode D2 connects 7 pin of operational amplifier U3B, the end of the 6 pin connecting resistance R13 of operational amplifier U3B and an end of resistance R 12,1 of the other end of resistance R 13 and rheostat R19,3 pin of 2 pin and operational amplifier U3A connect, 1 pin of operational amplifier U3A connects the negative pole of diode D5, one end of the positive pole of diode D5 and resistance R 8, one end of resistance R 7 and the positive pole of diode D4 connect, the negative pole of another terminating diode D3 of resistance R 8 and 5 pin of operational amplifier U2B, the positive pole of diode D3 connects 5 pin of operational amplifier U1B and 7 pin of operational amplifier U2B, the negative pole of diode D4 connects 1 pin of operational amplifier U2A, 3 pin of operational amplifier U2A and an end of resistance R 10, the positive pole of the positive pole of diode D6 and capacitor C 4 connects, 2 pin of operational amplifier U3A and 5 pin of operational amplifier U3B, one end of capacitor C 5 and an end of resistance R 11 connect, the signal voltage Vout1 of described Smoke Sensor modular circuit 3 outputs of another termination of resistance R 11, the other end of resistance R 17,8 pin of operational amplifier U1A, the other end of resistance R 5, the other end of resistance R 7,8 pin of operational amplifier U3A, 8 pin of operational amplifier U2A, the other end of resistance R 10, the other end of the negative pole of diode D6 and resistance R 12 meets dc source VCC jointly, the other end of resistance R 3, the emitter stage of triode Q1,4 pin of operational amplifier U1A, the other end of capacitor C 3, the other end of resistance R 4, the other end of resistance R 6,4 pin of operational amplifier U3A, the other end of capacitor C 5, the negative pole of capacitor C 4, the 4 pin common grounds of 3 pin of rheostat R19 and operational amplifier U2A
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103169559A CN102852557A (en) | 2012-08-31 | 2012-08-31 | Mining smoke sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103169559A CN102852557A (en) | 2012-08-31 | 2012-08-31 | Mining smoke sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102852557A true CN102852557A (en) | 2013-01-02 |
Family
ID=47399489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103169559A Pending CN102852557A (en) | 2012-08-31 | 2012-08-31 | Mining smoke sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102852557A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923966A (en) * | 2022-05-27 | 2022-08-19 | 天地（常州）自动化股份有限公司 | Carbon monoxide monitoring system and anti-electromagnetic interference method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4203100A (en) * | 1977-05-23 | 1980-05-13 | Hochiki Corporation | Light decrease type smoke sensor |
| CN2052493U (en) * | 1989-09-01 | 1990-02-07 | 童建文 | Multi-functional warning device for gas |
| CN2168249Y (en) * | 1993-09-25 | 1994-06-08 | 江照政 | Fully-automatic gas-monitoring and alarming device |
| CN101546466A (en) * | 2008-03-24 | 2009-09-30 | 武光杰 | Smoke sensing module |
| CN201837576U (en) * | 2010-10-25 | 2011-05-18 | 淮南润成科技有限公司 | Mine smoke sensor |
-
2012
- 2012-08-31 CN CN2012103169559A patent/CN102852557A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4203100A (en) * | 1977-05-23 | 1980-05-13 | Hochiki Corporation | Light decrease type smoke sensor |
| CN2052493U (en) * | 1989-09-01 | 1990-02-07 | 童建文 | Multi-functional warning device for gas |
| CN2168249Y (en) * | 1993-09-25 | 1994-06-08 | 江照政 | Fully-automatic gas-monitoring and alarming device |
| CN101546466A (en) * | 2008-03-24 | 2009-09-30 | 武光杰 | Smoke sensing module |
| CN201837576U (en) * | 2010-10-25 | 2011-05-18 | 淮南润成科技有限公司 | Mine smoke sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923966A (en) * | 2022-05-27 | 2022-08-19 | 天地（常州）自动化股份有限公司 | Carbon monoxide monitoring system and anti-electromagnetic interference method |
| CN114923966B (en) * | 2022-05-27 | 2023-12-01 | 天地（常州）自动化股份有限公司 | Carbon monoxide monitoring system and anti-electromagnetic interference method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203491727U (en) | USB charger for electronic cigarette | |
| CN109567280A (en) | Atomizer resistance value detection circuit and electronic cigarette | |
| CN204969478U (en) | Electronic cigarette | |
| CN107093921B (en) | Intelligent charger with power failure detection function | |
| CN102866177B (en) | Gas-sensitive type smoke sensor | |
| US11197505B2 (en) | Load and sterilization combination control circuit | |
| CN203310920U (en) | Battery insulation detection circuit and battery insulation detection device | |
| CN207301228U (en) | A kind of electric-leakage detection circuit based on intelligent electric meter | |
| CN107860799A (en) | TDS detection means and purifying kettle | |
| CN204347214U (en) | A kind of injection type power generator carbon brush contact detecting apparatus | |
| CN209563497U (en) | Atomizer resistance value detection circuit and electronic cigarette | |
| CN202748328U (en) | Air-sensitive smoke sensor | |
| CN102867388B (en) | Coal mine smoke transducer | |
| CN102866176B (en) | Gas-sensitive type smoke sensor for coal mine | |
| CN102852557A (en) | Mining smoke sensor | |
| CN104635194A (en) | Online fault monitoring and timing device for three-phase metering circuit | |
| CN102854220A (en) | Smog detection sensor | |
| CN109090710A (en) | A kind of atomizer resistance value detection circuit | |
| CN205982490U (en) | Charger detector | |
| CN102854218A (en) | Gas-sensitive smog sensor | |
| CN202466247U (en) | Electric iron | |
| CN102854219A (en) | Smog sensor | |
| CN214251093U (en) | Communication power supply detection equipment | |
| CN203564097U (en) | Novel water dispenser | |
| CN204679874U (en) | A kind of heating boiler level sensing display control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130102 |