CN204856806U - Smog detection circuitry based on power line carrier communication - Google Patents
Smog detection circuitry based on power line carrier communication Download PDFInfo
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- CN204856806U CN204856806U CN201520581626.6U CN201520581626U CN204856806U CN 204856806 U CN204856806 U CN 204856806U CN 201520581626 U CN201520581626 U CN 201520581626U CN 204856806 U CN204856806 U CN 204856806U
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Abstract
The utility model discloses a smog detection circuitry based on power line carrier communication, including detecting starting circuit, infrared detection circuitry and amplifier circuit, detect starting circuit and connect the infrared monitoring circuit, infrared monitoring circuit connection amplifier circuit, wherein, detect starting circuit, higher level control circuit send the enabling signal of opening the work of infrared detection circuitry through the CIRCtrl human hair combing waste, detected signal after amplifier circuit will enlarge mails to subsequent receiving circuit so that confirm the harm condition of smog, on the detection circuitry who adopts power line carrier communication, detect the smog detection circuitry who builds for realizing to the smog value of location intra -area, the infrared light power of passing through to receive is judged to confirm the intensity of location intra -area smog value, have characteristics such as design scientific and reasonable, economical and practical for whether follow -up circuit changes the number of pass with ventilation effect here according to basis, entire system.
Description
Technical field
The utility model relates to the technical field such as power carrier, sensor detection, specifically, is a kind of Smoke Detection circuit based on power line carrier, PLC.
Background technology
Power carrier communication and PLC are the abbreviations of English PowerlineCommunication.Power carrier is the distinctive communication mode of electric system, and power carrier communication refers to and utilizes existing line of electric force, by carrier system, analog or digital signal is carried out the technology of high-speed transfer.Maximum feature does not need again to set up network, as long as live wire, just can carry out data transmission.
The maximum feature of PLC: do not need again to set up network, as long as live wire, just can carry out data transmission, becomes one of preferred plan solving the transmission of these Smart Home data undoubtedly.Simultaneously because data are only transmitted in this scope of family, 5 of constraint PLC application is perplexed greatly and will be weakened to a great extent, the long-range control to household electrical appliances we be also first connected to PC by legacy network and then control household electrical appliances mode and realize, the cost of PLC modulation /demodulation module is also far below wireless module.
Utility model content
The purpose of this utility model is to provide a kind of Smoke Detection circuit based on power line carrier, PLC, on the testing circuit adopting power line carrier, PLC, for the Smoke Detection circuit that realization detects the smog value in region and build, pass through received infrared light power to judge, thus determine the intensity of smog value in region, for whether subsequent conditioning circuit is undertaken ventilation effect herein changing by data basis, whole system has the characteristics such as design science is reasonable, economical and practical.
The utility model is achieved through the following technical solutions: a kind of Smoke Detection circuit based on power line carrier, PLC, comprise and detect start-up circuit, infrared circuit and amplifying circuit, described detection start-up circuit connects infrared inspecting circuit, and described infrared inspecting circuit connects amplifying circuit;
Wherein, described detection start-up circuit, higher level's control circuit send the enabling signal of opening infrared circuit work by CIRCtrl human hair combing waste;
Detection signal after amplification is mail to follow-up receiving circuit to determine the Harm of smog by described amplifying circuit.
Further for better to realize the utility model, described detection start-up circuit comprises triode Q1, the base bias circuit be made up of resistance R2 and resistance R3; Described resistance R3 is connected with CIRCtrl pin; The emitter of above-mentioned triode Q1 is provided with emitter bias resistance R1, and the collector of described triode Q1 is connected with infrared circuit.
Further for better to realize the utility model, described infrared circuit comprises infrared receiving/transmission part IC1, supplying resistance R4 and stake resistance R5, the collector of described triode Q1 is connected to one end of the power valve of infrared receiving/transmission part IC1, and supplying resistance R4 is connected to the other end of the power valve of infrared receiving/transmission part IC1; Described stake resistance R5 is connected to one end of the receiving tube of infrared receiving/transmission part IC1, and the other end is connected with amplifying circuit.
Further for better to realize the utility model, between the other end and amplifying circuit of the receiving tube of infrared receiving/transmission part IC1, be also provided with RC filtering circuit, described RC filtering circuit original electric capacity C1 and resistance R6.
Further for better to realize the utility model, described amplifying circuit comprises one-level amplifying circuit and second amplifying circuit, described RC filtering circuit connects one-level amplifying circuit, and described one-level amplifying circuit connects second amplifying circuit, and described second amplifying circuit connects the SDOut pin of receiving circuit.
Further for better to realize the utility model, described one-level amplifying circuit comprises amplifier chip IC2, biasing resistor R7, biasing resistor R8, biasing resistor R9, and described biasing resistor R7 is in parallel with biasing resistor R7 and be connected to the negative input of amplifier chip IC2; Between the negative input that described biasing resistor R9 is connected to amplifier chip IC2 and output terminal; The electrode input end of described amplifier chip IC2 is connected with electric capacity C1; The output terminal of described amplifier chip IC2 is connected with second amplifying circuit.
Further for better to realize the utility model, the input biasing circuit that described second amplifying circuit comprises amplifier chip IC3, is made up of resistance R10 and resistance R11; Described input biasing circuit is connected to the electrode input end of amplifier chip IC3, and resistance R10 is connected with the output terminal of amplifier chip IC2; The negative input of described amplifier chip is also provided with below-center offset circuit, and described below-center offset circuit comprises resistance R12 and resistance R13; Described resistance R13 is connected with the output terminal of amplifier chip IC3, and the output terminal of described amplifier chip IC3 is also provided with resistance R15 and resistance R14, and described resistance R15 is connected with the SDOut pin of receiving circuit.
The utility model compared with prior art, has the following advantages and beneficial effect:
The utility model is on the testing circuit adopting power line carrier, PLC, for the Smoke Detection circuit that realization detects the smog value in region and build, pass through received infrared light power to judge, thus determine the intensity of smog value in region, for whether subsequent conditioning circuit is undertaken ventilation effect herein changing by data basis, whole system has the characteristics such as design science is reasonable, economical and practical.
The utility model utilizes two-stage amplification mode the infrared signal detected to be amplified, and reaches the object of effectively detected signal being carried out to accurately judgement.
In use, if do not have breaking out of fire dangerous situation (non smoke), infrared light can not arrive receiving tube to the utility model; When there is fire dangerous situation (having smog), infrared light produces diffuse reflection and refraction on smoke particle surface and enters infrared receiving tube, smog larger infrared light diffuse reflection and refraction stronger, infrared acceptor signal is stronger.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1:
A kind of Smoke Detection circuit based on power line carrier, PLC, on the testing circuit adopting power line carrier, PLC, for the Smoke Detection circuit that realization detects the smog value in region and build, pass through received infrared light power to judge, thus determine the intensity of smog value in region, for whether subsequent conditioning circuit is undertaken changing by data basis by ventilation effect herein, it is reasonable that whole system has design science, the characteristic such as economical and practical, as shown in Figure 1, be provided with following structure especially: comprise detection start-up circuit, infrared circuit and amplifying circuit, described detection start-up circuit connects infrared inspecting circuit, described infrared inspecting circuit connects amplifying circuit,
Wherein, described detection start-up circuit, higher level's control circuit send the enabling signal of opening infrared circuit work by CIRCtrl human hair combing waste;
Detection signal after amplification is mail to follow-up receiving circuit to determine the Harm of smog by described amplifying circuit.
Embodiment 2:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, be provided with following structure especially: described detection start-up circuit comprises triode Q1, the base bias circuit be made up of resistance R2 and resistance R3; Described resistance R3 is connected with CIRCtrl pin; The emitter of above-mentioned triode Q1 is provided with emitter bias resistance R1, and the collector of described triode Q1 is connected with infrared circuit.
Embodiment 3:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, be provided with following structure especially: described infrared circuit comprises infrared receiving/transmission part IC1, supplying resistance R4 and stake resistance R5, the collector of described triode Q1 is connected to one end of the power valve of infrared receiving/transmission part IC1, and supplying resistance R4 is connected to the other end of the power valve of infrared receiving/transmission part IC1; Described stake resistance R5 is connected to one end of the receiving tube of infrared receiving/transmission part IC1, and the other end is connected with amplifying circuit, and in use, if do not have breaking out of fire dangerous situation (non smoke), infrared light can not arrive receiving tube; When there is fire dangerous situation (having smog), infrared light produces diffuse reflection and refraction on smoke particle surface and enters infrared receiving tube, smog larger infrared light diffuse reflection and refraction stronger, infrared acceptor signal is stronger.
Embodiment 4:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, be provided with following structure especially: between the other end and amplifying circuit of the receiving tube of infrared receiving/transmission part IC1, be also provided with RC filtering circuit, described RC filtering circuit original electric capacity C1 and resistance R6.
Embodiment 5:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, two-stage amplification mode is utilized the infrared signal detected to be amplified, reach the object of effectively detected signal being carried out to accurately judgement, as shown in Figure 1, be provided with following structure especially: described amplifying circuit comprises one-level amplifying circuit and second amplifying circuit, described RC filtering circuit connects one-level amplifying circuit, described one-level amplifying circuit connects second amplifying circuit, and described second amplifying circuit connects the SDOut pin of receiving circuit.
Embodiment 6:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, be provided with following structure especially: further for better to realize the utility model, described one-level amplifying circuit comprises amplifier chip IC2, biasing resistor R7, biasing resistor R8, biasing resistor R9, and described biasing resistor R7 is in parallel with biasing resistor R7 and be connected to the negative input of amplifier chip IC2; Between the negative input that described biasing resistor R9 is connected to amplifier chip IC2 and output terminal; The electrode input end of described amplifier chip IC2 is connected with electric capacity C1; The output terminal of described amplifier chip IC2 is connected with second amplifying circuit.
Embodiment 7:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, be provided with following structure especially: further for better to realize the utility model, the input biasing circuit that described second amplifying circuit comprises amplifier chip IC3, is made up of resistance R10 and resistance R11; Described input biasing circuit is connected to the electrode input end of amplifier chip IC3, and resistance R10 is connected with the output terminal of amplifier chip IC2; The negative input of described amplifier chip is also provided with below-center offset circuit, and described below-center offset circuit comprises resistance R12 and resistance R13; Described resistance R13 is connected with the output terminal of amplifier chip IC3, and the output terminal of described amplifier chip IC3 is also provided with resistance R15 and resistance R14, and described resistance R15 is connected with the SDOut pin of receiving circuit.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection domain of the present utility model.
Claims (7)
1. based on a Smoke Detection circuit for power line carrier, PLC, it is characterized in that: comprise and detect start-up circuit, infrared circuit and amplifying circuit, described detection start-up circuit connects infrared inspecting circuit, and described infrared inspecting circuit connects amplifying circuit;
Wherein, described detection start-up circuit, higher level's control circuit send the enabling signal of opening infrared circuit work by CIRCtrl human hair combing waste;
Detection signal after amplification is mail to follow-up receiving circuit to determine the Harm of smog by described amplifying circuit.
2. a kind of Smoke Detection circuit based on power line carrier, PLC according to claim 1, is characterized in that: described detection start-up circuit comprises triode Q1, the base bias circuit be made up of resistance R2 and resistance R3; Described resistance R3 is connected with CIRCtrl pin; The emitter of above-mentioned triode Q1 is provided with emitter bias resistance R1, and the collector of described triode Q1 is connected with infrared circuit.
3. a kind of Smoke Detection circuit based on power line carrier, PLC according to claim 2, it is characterized in that: described infrared circuit comprises infrared receiving/transmission part IC1, supplying resistance R4 and stake resistance R5, the collector of described triode Q1 is connected to one end of the power valve of infrared receiving/transmission part IC1, and supplying resistance R4 is connected to the other end of the power valve of infrared receiving/transmission part IC1; Described stake resistance R5 is connected to one end of the receiving tube of infrared receiving/transmission part IC1, and the other end is connected with amplifying circuit.
4. a kind of Smoke Detection circuit based on power line carrier, PLC according to claim 3, it is characterized in that: between the other end and amplifying circuit of the receiving tube of infrared receiving/transmission part IC1, be also provided with RC filtering circuit, described RC filtering circuit original electric capacity C1 and resistance R6.
5. a kind of Smoke Detection circuit based on power line carrier, PLC according to claim 4, it is characterized in that: described amplifying circuit comprises one-level amplifying circuit and second amplifying circuit, described RC filtering circuit connects one-level amplifying circuit, described one-level amplifying circuit connects second amplifying circuit, and described second amplifying circuit connects the SDOut pin of receiving circuit.
6. a kind of Smoke Detection circuit based on power line carrier, PLC according to claim 5, it is characterized in that: described one-level amplifying circuit comprises amplifier chip IC2, biasing resistor R7, biasing resistor R8, biasing resistor R9, described biasing resistor R7 is in parallel with biasing resistor R7 and be connected to the negative input of amplifier chip IC2; Between the negative input that described biasing resistor R9 is connected to amplifier chip IC2 and output terminal; The electrode input end of described amplifier chip IC2 is connected with electric capacity C1; The output terminal of described amplifier chip IC2 is connected with second amplifying circuit.
7. a kind of Smoke Detection circuit based on power line carrier, PLC according to claim 6, is characterized in that: the input biasing circuit that described second amplifying circuit comprises amplifier chip IC3, is made up of resistance R10 and resistance R11; Described input biasing circuit is connected to the electrode input end of amplifier chip IC3, and resistance R10 is connected with the output terminal of amplifier chip IC2; The negative input of described amplifier chip is also provided with below-center offset circuit, and described below-center offset circuit comprises resistance R12 and resistance R13; Described resistance R13 is connected with the output terminal of amplifier chip IC3, and the output terminal of described amplifier chip IC3 is also provided with resistance R15 and resistance R14, and described resistance R15 is connected with the SDOut pin of receiving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520581626.6U CN204856806U (en) | 2015-08-05 | 2015-08-05 | Smog detection circuitry based on power line carrier communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520581626.6U CN204856806U (en) | 2015-08-05 | 2015-08-05 | Smog detection circuitry based on power line carrier communication |
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| Publication Number | Publication Date |
|---|---|
| CN204856806U true CN204856806U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520581626.6U Expired - Fee Related CN204856806U (en) | 2015-08-05 | 2015-08-05 | Smog detection circuitry based on power line carrier communication |
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| CN (1) | CN204856806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105069956A (en) * | 2015-08-05 | 2015-11-18 | 成都君禾天成科技有限公司 | Smoke detection circuit based on power line communication |
-
2015
- 2015-08-05 CN CN201520581626.6U patent/CN204856806U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105069956A (en) * | 2015-08-05 | 2015-11-18 | 成都君禾天成科技有限公司 | Smoke detection circuit based on power line communication |
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| C14 | Grant of patent or utility model | ||
| 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: 20151209 Termination date: 20180805 |