CN204882451U - CO detects signal amplification circuit - Google Patents
CO detects signal amplification circuit Download PDFInfo
- Publication number
- CN204882451U CN204882451U CN201520612569.3U CN201520612569U CN204882451U CN 204882451 U CN204882451 U CN 204882451U CN 201520612569 U CN201520612569 U CN 201520612569U CN 204882451 U CN204882451 U CN 204882451U
- Authority
- CN
- China
- Prior art keywords
- resistance
- detection
- chip
- circuit
- amplifier chip
- 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
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a CO detects signal amplification circuit, including being used for the gaseous detection of CO and realizing the gas detection circuit of non - electric quantity signal to the electric quantity signal transform for take care of the modulate circuit of transform to the gaseous signal of the CO who detects, gas detection circuit with take care of circuit connection, on the detection circuitry who adopts power line carrier communication, detect the CO detects signal amplification circuit who builds for realizing to the CO content of location intra -area, utilize the CO content that has many locations of electric chemical property technique intra -area effectively to detect to with enlargeing behind the non - electric quantity signal conversion position electric quantity signal who detects, prepare against follow -up circuit and contrast, save and form tactics, entire system has characteristics such as design scientific and reasonable, economical and practical.
Description
Technical field
The utility model relates to the technical field such as power carrier, gas detect, specifically, is a kind of CO detection signal amplifying circuit.
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.
Electrochemistry gas detection technology, because quite a few flammable, toxic and harmful have electrochemical activity, can be electrochemically oxidized or reduce.Utilize these to react, gas ingredients can be differentiated, detect gas concentration.Electrochemical gas sensor divides a lot of subclass:
(1), galvanic cell type gas sensor (also claims: Jia Funi battery-type gas sensor, also have and claim feulcell prototype gas sensor, also have and claim galvanic cell type gas sensor), their principle row is with our dry cell, just, the carbon manganese electrode of battery be instead of by gas electrode.For oxygen sensor, oxygen is reduced at negative electrode, and electronics flows to anode by reometer, and lead metal is oxidized there.The size of electric current is directly related with the concentration of oxygen.This sensor can detect oxygen, sulphuric dioxide, chlorine etc. effectively.
(2), constant potential electrolytic cell type gas sensor, this sensor is very effective for detecting reducibility gas, its principle and galvanic cell type sensor different, its electrochemical reaction occurs under electric current is forced, and is a kind of sensor of real coulometry.This sensor is successfully used to: carbon monoxide, sulfuretted hydrogen, hydrogen, ammonia, hydrazine, etc. gas detection among, be existing toxic and harmful detect mainstream sensor.
(3), concentration cell type gas sensor, there are the both sides of gas at electrochemical cell of electrochemical activity, the spontaneous formation concentration difference electromotive force of meeting, the size of electromotive force is relevant with the concentration of gas, and the examples of many successful of this sensor is exactly automobile oxygen sensor, solid electrolyte type carbon dioxide sensor.
(4), limit-current type gas sensor, a kind of sensor measuring oxygen concentration is had to utilize the principle relevant to carrier concentration of the limiting current in electrochemical pond to prepare oxygen (gas) concentration sensor, for the oxygen detection of automobile, and in molten steel, oxygen concentration detects.
Utility model content
The purpose of this utility model is to provide a kind of CO detection signal amplifying circuit, on the testing circuit adopting power line carrier, PLC, for the CO detection signal amplifying circuit that realization detects the CO content in region and build, the CO content had in the many regions of chemical property technology is utilized effectively to detect, and amplified after the electric quantity signal of detected non-electric charge quantity signalling conversion position, carry out contrasting in order to subsequent conditioning circuit, store and forming strategies, 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 CO detection signal amplifying circuit, comprise for CO gas detect and realize the Detection Circuit that non-electric charge quantity signalling converts to electric quantity signal, for carrying out the modulate circuit nursing one's health conversion to detected CO gas signal; Described Detection Circuit is connected with modulate circuit.
Further for better to realize the utility model, described Detection Circuit comprises CO detection chip IC3, field effect transistor Q1, resistance R5, resistance R8, electric capacity C1; Described resistance R5 connects with electric capacity C1; First pin of described detection chip IC3 is connected with the drain electrode of resistance R5 and field effect transistor Q1 respectively, and the source electrode of described field effect transistor Q1 is connected with the crus secunda of detection chip IC3, and the tripod of described detection chip IC3 is connected with electric capacity C1; Described resistance R8 is connected with the grid of field effect transistor Q1, and resistance R8 is connected with positive supply.
Further for better to realize the utility model, described modulate circuit comprises constant potential circuit, described constant potential circuit comprises amplifier chip IC1, resistance R6, resistance R7, described resistance R6 one end is connected with resistance R5, and the other end of resistance R6 is connected with the negative input of amplifier chip IC1; The electrode input end of described amplifier chip IC1 is by resistance R7 ground connection; The output terminal of described amplifier chip IC1 also connects electric capacity C1; Described amplifier chip IC1 also provides positive supply and negative supply.
Further for better to realize the utility model, first pin of described detection chip IC3 is R pole, and the crus secunda of described detection chip IC3 is W pole, and the tripod of described detection chip IC3 is C pole; Described field effect transistor Q1 is P-channel enhancement type MOS field effect transistor.
Further for better to realize the utility model, described amplifier chip IC1 provides on the pin of positive supply and be also provided with electric capacity C4, described amplifier chip IC1 provides on the pin of negative supply and be also provided with electric capacity C3, described positive supply is+3.3v, and described negative supply is-3.3v.
Further for better to realize the utility model, described modulate circuit also comprises signal amplification circuit, be provided with amplifier chip IC2, resistance R1, resistance R2, resistance R3, resistance R4, resistance R10, electric capacity C2 and electric capacity C5 in described signal amplification circuit, the source electrode of described field effect transistor Q1 is connected with the negative input of amplifier chip IC2 by resistance R9; Described resistance R2 with after resistance R4 parallel connection with between the negative input that resistance R1 connects then and electric capacity C2 is connected in parallel on amplifier chip IC2 and output terminal; The electrode input end of described amplifier chip IC2 is by resistance R3 ground connection; The output terminal of described amplifier chip IC2 is connected with the CODOut pin of late-class circuit by resistance R10, and resistance R10 is by electric capacity C5 ground connection.
Further for better to realize the utility model, described amplifier chip IC2 and amplifier chip IC1 all adopts AD8572.
Further for better to realize the utility model, described CO detection chip IC3 adopts electrochemical element ME3CO.
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 CO detection signal amplifying circuit that realization detects the CO content in region and build, the CO content had in the many regions of chemical property technology is utilized effectively to detect, and amplified after the electric quantity signal of detected non-electric charge quantity signalling conversion position, carry out contrasting in order to subsequent conditioning circuit, store and forming strategies, whole system has the characteristics such as design science is reasonable, economical and practical.
Constant potential circuit described in the utility model, can make current potential between C, R the two poles of the earth of CO detection chip IC3 and W pole keep certain.
The electric current produced when signal amplification circuit described in the utility model is for detecting gas electrolysis in CO detection chip IC3, the current signal that this is faint is amplified, and there is low-pass filtering function, can filtering detect current signal in high-frequency interferencing signal.
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 CO detection signal amplifying circuit, on the testing circuit adopting power line carrier, PLC, for the CO detection signal amplifying circuit that realization detects the CO content in region and build, the CO content had in the many regions of chemical property technology is utilized effectively to detect, and amplified after the electric quantity signal of detected non-electric charge quantity signalling conversion position, contrast in order to subsequent conditioning circuit, store and forming strategies, as shown in Figure 1, be provided with following structure especially: comprise for CO gas detect and realize the Detection Circuit that non-electric charge quantity signalling converts to electric quantity signal, for carrying out the modulate circuit nursing one's health conversion to detected CO gas signal, described Detection Circuit is connected with modulate 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, following structure is arranged to especially: described Detection Circuit comprises CO detection chip IC3, field effect transistor Q1, resistance R5, resistance R8, electric capacity C1; Described resistance R5 connects with electric capacity C1; First pin of described detection chip IC3 is connected with the drain electrode of resistance R5 and field effect transistor Q1 respectively, and the source electrode of described field effect transistor Q1 is connected with the crus secunda of detection chip IC3, and the tripod of described detection chip IC3 is connected with electric capacity C1; Described resistance R8 is connected with the grid of field effect transistor Q1, and resistance R8 is connected with positive supply.
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 arranged to following structure especially: described modulate circuit comprises constant potential circuit, described constant potential circuit comprises amplifier chip IC1, resistance R6, resistance R7, described resistance R6 one end is connected with resistance R5, and the other end of resistance R6 is connected with the negative input of amplifier chip IC1; The electrode input end of described amplifier chip IC1 is by resistance R7 ground connection; The output terminal of described amplifier chip IC1 also connects electric capacity C1; Described amplifier chip IC1 also provides positive supply and negative supply.
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 arranged to following structure especially: first pin of described detection chip IC3 is R pole, the crus secunda of described detection chip IC3 is W pole, and the tripod of described detection chip IC3 is C pole; Described field effect transistor Q1 is P-channel enhancement type MOS field effect transistor.
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, as shown in Figure 1, be arranged to following structure especially: provide on described amplifier chip IC1 on the pin of positive supply and be also provided with electric capacity C4, described amplifier chip IC1 provides on the pin of negative supply and be also provided with electric capacity C3, described positive supply is+3.3v, and described negative supply is-3.3v.
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 arranged to following structure especially: described modulate circuit also comprises signal amplification circuit, be provided with amplifier chip IC2, resistance R1, resistance R2, resistance R3, resistance R4, resistance R10, electric capacity C2 and electric capacity C5 in described signal amplification circuit, the source electrode of described field effect transistor Q1 is connected with the negative input of amplifier chip IC2 by resistance R9; Described resistance R2 with after resistance R4 parallel connection with between the negative input that resistance R1 connects then and electric capacity C2 is connected in parallel on amplifier chip IC2 and output terminal; The electrode input end of described amplifier chip IC2 is by resistance R3 ground connection; The output terminal of described amplifier chip IC2 is connected with the CODOut pin of late-class circuit by resistance R10, and resistance R10 is by electric capacity C5 ground connection.
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, is arranged to following structure especially: described amplifier chip IC2 and amplifier chip IC1 all adopts AD8572.
Embodiment 8:
The present embodiment is at the enterprising one-step optimization in the basis of embodiment 2-7 any embodiment, further for better to realize the utility model, as shown in Figure 1, is arranged to following structure especially: described CO detection chip IC3 adopts electrochemical element ME3CO.
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 (8)
1. a CO detection signal amplifying circuit, is characterized in that: comprise for CO gas detect and realize the Detection Circuit that non-electric charge quantity signalling converts to electric quantity signal, for carrying out the modulate circuit nursing one's health conversion to detected CO gas signal; Described Detection Circuit is connected with modulate circuit.
2. a kind of CO detection signal amplifying circuit according to claim 1, is characterized in that: described Detection Circuit comprises CO detection chip IC3, field effect transistor Q1, resistance R5, resistance R8, electric capacity C1; Described resistance R5 connects with electric capacity C1; First pin of described detection chip IC3 is connected with the drain electrode of resistance R5 and field effect transistor Q1 respectively, and the source electrode of described field effect transistor Q1 is connected with the crus secunda of detection chip IC3, and the tripod of described detection chip IC3 is connected with electric capacity C1; Described resistance R8 is connected with the grid of field effect transistor Q1, and resistance R8 is connected with positive supply.
3. a kind of CO detection signal amplifying circuit according to claim 2, it is characterized in that: described modulate circuit comprises constant potential circuit, described constant potential circuit comprises amplifier chip IC1, resistance R6, resistance R7, described resistance R6 one end is connected with resistance R5, and the other end of resistance R6 is connected with the negative input of amplifier chip IC1; The electrode input end of described amplifier chip IC1 is by resistance R7 ground connection; The output terminal of described amplifier chip IC1 also connects electric capacity C1; Described amplifier chip IC1 also provides positive supply and negative supply.
4. a kind of CO detection signal amplifying circuit according to claim 3, it is characterized in that: first pin of described detection chip IC3 is R pole, the crus secunda of described detection chip IC3 is W pole, and the tripod of described detection chip IC3 is C pole; Described field effect transistor Q1 is P-channel enhancement type MOS field effect transistor.
5. a kind of CO detection signal amplifying circuit according to claim 4, it is characterized in that: provide on described amplifier chip IC1 on the pin of positive supply and be also provided with electric capacity C4, described amplifier chip IC1 provides on the pin of negative supply and be also provided with electric capacity C3, described positive supply is+3.3v, and described negative supply is-3.3v.
6. a kind of CO detection signal amplifying circuit according to claim 5, it is characterized in that: described modulate circuit also comprises signal amplification circuit, be provided with amplifier chip IC2, resistance R1, resistance R2, resistance R3, resistance R4, resistance R10, electric capacity C2 and electric capacity C5 in described signal amplification circuit, the source electrode of described field effect transistor Q1 is connected with the negative input of amplifier chip IC2 by resistance R9; Described resistance R2 with after resistance R4 parallel connection with between the negative input that resistance R1 connects then and electric capacity C2 is connected in parallel on amplifier chip IC2 and output terminal; The electrode input end of described amplifier chip IC2 is by resistance R3 ground connection; The output terminal of described amplifier chip IC2 is connected with the CODOut pin of late-class circuit by resistance R10, and resistance R10 is by electric capacity C5 ground connection.
7. a kind of CO detection signal amplifying circuit according to claim 6, is characterized in that: described amplifier chip IC2 and amplifier chip IC1 all adopts AD8572.
8. a kind of CO detection signal amplifying circuit according to any one of claim 2-7, is characterized in that: described CO detection chip IC3 adopts electrochemical element ME3CO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520612569.3U CN204882451U (en) | 2015-08-14 | 2015-08-14 | CO detects signal amplification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520612569.3U CN204882451U (en) | 2015-08-14 | 2015-08-14 | CO detects signal amplification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204882451U true CN204882451U (en) | 2015-12-16 |
Family
ID=54826812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520612569.3U Expired - Fee Related CN204882451U (en) | 2015-08-14 | 2015-08-14 | CO detects signal amplification circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204882451U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136878A (en) * | 2015-08-14 | 2015-12-09 | 成都易思科科技有限公司 | CO detection signal amplifying circuit |
| CN105354995A (en) * | 2015-11-26 | 2016-02-24 | 兴化市成顺消防科技研究院有限公司 | CO detection module applied to fire-fighting safety |
-
2015
- 2015-08-14 CN CN201520612569.3U patent/CN204882451U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136878A (en) * | 2015-08-14 | 2015-12-09 | 成都易思科科技有限公司 | CO detection signal amplifying circuit |
| CN105354995A (en) * | 2015-11-26 | 2016-02-24 | 兴化市成顺消防科技研究院有限公司 | CO detection module applied to fire-fighting safety |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208013131U (en) | A kind of Agricultural Information acquisition system based on multisensor | |
| CN204882451U (en) | CO detects signal amplification circuit | |
| MX2019014048A (en) | Ultrastable rechargeable manganese battery with solid-liquid-gas reactions. | |
| CN104753093A (en) | Charger and charging control method | |
| CN103401045A (en) | Flow-battery energy storage system with photoelectric effect | |
| CN210577832U (en) | Lithium cell simulation dry battery output structure | |
| CN205973911U (en) | Electrolytic hydrogen production generating device and rich hydrogen cup | |
| CN101949966A (en) | Mobile terminal capable of accurately detecting charging current | |
| CN105136878A (en) | CO detection signal amplifying circuit | |
| IN2015DN00672A (en) | ||
| CN203365539U (en) | Potential detection sensor | |
| CN202614719U (en) | Amplifying circuit for carbon monoxide sensor | |
| CN102004227A (en) | High power battery detection circuit of electric vehicle | |
| CN205194023U (en) | Be applied to CO detection module of security against fire | |
| CN204947617U (en) | A kind of charger without polarity | |
| CN204203808U (en) | A kind of temperature control system for industrial furnace | |
| CN202512083U (en) | Auxiliary circuit with electrochemical gas sensor | |
| CN105783126A (en) | Portable air purifier based on principle of differential amplification | |
| CN210775449U (en) | Water quality monitoring control system | |
| CN208654222U (en) | A kind of grid-connected photovoltaic system | |
| CN203216896U (en) | Freshwater aquaculture dissolved oxygen concentration wireless monitoring terminal | |
| CN101943677B (en) | Blue green algae concentration monitoring system with microorganism fuel cell power supply | |
| CN216209072U (en) | Water quality monitoring system | |
| CN204116269U (en) | A kind of constant potential driving circuit | |
| CN206134871U (en) | Device suitable for detect cylindrical electric core electrode voltage |
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: 20151216 Termination date: 20160814 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |