CN2884200Y - Composite sensor for carbon oxide (S) and oxygen - Google Patents
Composite sensor for carbon oxide (S) and oxygen Download PDFInfo
- Publication number
- CN2884200Y CN2884200Y CN 200620022736 CN200620022736U CN2884200Y CN 2884200 Y CN2884200 Y CN 2884200Y CN 200620022736 CN200620022736 CN 200620022736 CN 200620022736 U CN200620022736 U CN 200620022736U CN 2884200 Y CN2884200 Y CN 2884200Y
- Authority
- CN
- China
- Prior art keywords
- carbon monoxide
- oxygen
- circuit
- combination sensor
- coupling relay
- 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
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a carbon monoxide and oxygen combined sensor, comprising a carbon monoxide detection component and an oxygen detection component, two amplifying circuits, two A/D converters, a single-chip microcomputer, two display circuits, an acousto-optic alarm circuit, two signal output circuits, a keyboard and a remote control receiving circuit, also an external memory and a power supply circuit. The utility model has the advantages that: the sensor has simple structure and can simultaneously monitor the concentration of carbon monoxide and oxygen in the environment, the transmission of the power and signal can be performed only by a multi-core cable so as to reduce the cost and power consumption, and the utility model has high cost performance and convenient field construction.
Description
Technical field
The utility model relates to a kind of sensor, specifically is a kind of carbon monoxide, oxygen combination sensor.
Background technology
In industries such as mining, be provided with various sensors in the mine, in order to detect all gases concentration, guarantee production safety.At present, online detecting sensor all is a simple function, a sensor can only detect a kind of gas, and as often needing in the hazardous environments such as mine multiple gases is detected, so just need a kind of sensor be set, thereby just a variety of sensors need be set at the scene, not only increase cost at each gas, increased power consumption, it is easy also to be not easy to site operation.In addition; under the situation of outage, need the electrode of carbon monoxide transducer is carried out short-circuit protection; and the electromagnetic relay that adopts at present current ratio in action is bigger; working current is also bigger; the working current of whole sensor is increased; increased power consumption, the transmission range of the signal of sensor also is restricted.In the process that detects, on-the-spot staff can not in time understand the communication state between spot sensor and the monitoring station.
The utility model content
The purpose of this utility model provides the combination sensor of a kind of on-line monitoring carbon monoxide simultaneously and oxygen.
Further purpose of the present utility model provides a kind of communication state observation circuit carbon monoxide, oxygen combination sensor, that can show communication state between sensor and the monitoring station at the scene that is applied to.
Further purpose of the present utility model provides a kind of Carbon Monoxide Detection element electrode protective device carbon monoxide, oxygen combination sensor, that working current is low that is applied to.
The technical solution of the utility model is: a kind of carbon monoxide, oxygen combination sensor, have Carbon Monoxide Detection element and oxygen detection element, and respectively carbon monoxide and concentration of oxygen are detected; Two amplifying circuits, the detection signal to Carbon Monoxide Detection element and oxygen detection element amplifies respectively;
Two A/D converters, the signal after respectively amplifying circuit being amplified carries out analog to digital conversion;
A single-chip microcomputer reads analog-to-digital data, analyzes back output analysis result as calculated, and analysis result is outputed to display circuit and sound light alarming circuit respectively;
Two display circuits are respectively applied for the analysis result that shows carbon monoxide and oxygen;
A sound light alarming circuit carries out sound and light alarm according to the analysis result of overshoot value;
Described carbon monoxide, oxygen combination sensor also include two signal output apparatus, external memory storage, keyboard, remote-control receiving circuit and power circuit; Described two signal output apparatus are sent to remote supervisory station to detected carbonomonoxide concentration value and oxygen density value respectively.
Described two signal output apparatus also are connected with the communication state observation circuit respectively; Described communication state observation circuit is monitored the communications status of communication line in real time, and at the scene communication state is shown by light-emitting device.
Described communication state observation circuit includes light coupling relay and light emitting diode thereof; The control end of light coupling relay is connected with loaded line with the output terminal of above-mentioned signal output apparatus respectively, and two output terminals of light coupling relay are connected with light emitting diode with a signal output part of single-chip microcomputer respectively, the conducting of Single-chip Controlling light emitting diode.
Described Carbon Monoxide Detection element also is connected with electrode protecting device.
Described electrode protecting device has a light coupling relay, and the reference utmost point R of Carbon Monoxide Detection element is connected with two output terminals of light coupling relay respectively with work utmost point S, and two control ends of light coupling relay are connected with power circuit; When the detecting element outage quits work, pass through light coupling relay short circuit conducting with reference to utmost point R and work utmost point S.
Described single-chip microcomputer model is STC89LE52RC.
Described remote-control receiving circuit has the receiver of remote-control sytem that model is TL1838A2.
Described external memory storage is that model is the external memory storage of the band house dog of X5045.
Described A/D transducer model is TLC1549.
This technique scheme has the following advantages compared to existing technology: (1) is with respect to discrete sensor, this combination sensor is simple in structure, energy is the carbon monoxide and the concentration of oxygen of monitoring of environmental simultaneously, only carry out the conveying of power supply and the transmission of signal by a polycore cable, reduced cost, reduced power consumption, had high cost performance, site operation is easy.(2) be provided with the communication state observation circuit after, can make on-the-spot staff can in time understand communication state between sensor and the monitoring station.(3) electrode protecting device of Carbon Monoxide Detection element adopts miniature light coupling relay to substitute traditional electromagnetic relay, and volume is little, and cut-off current is little; working current is low; power consumption is little, has increased the transmission range of the signal of carbon monoxide transducer, has prolonged the serviceable life of carbon monoxide transducer.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, the utility model is described in further detail, wherein
Fig. 1 is the utility model theory diagram;
Fig. 2 is the schematic diagram of the power circuit of embodiment;
Fig. 3 is the schematic diagram of the signal amplification circuit of embodiment;
Fig. 4 is the schematic diagram of embodiment single-chip microcomputer, A/D converter, keyboard, remote-control receiving circuit, external memory storage and display circuit;
Fig. 5 is the schematic diagram of the sound light alarming circuit of embodiment;
Fig. 6 is the signal output apparatus of embodiment.
Embodiment
See Fig. 1, the carbon monoxide of present embodiment, oxygen combination sensor comprise: Carbon Monoxide Detection element and oxygen detection element are used to detect CO gas and oxygen; Two amplifying circuits, the detection signal to carbon monoxide and oxygen amplifies respectively; Two A/D converters, the signal after respectively amplifying circuit being amplified carries out analog to digital conversion; A single-chip microcomputer reads analog-to-digital data, analyzes back output analysis result as calculated, and analysis result is outputed to display circuit and sound light alarming circuit respectively; Two display circuits are respectively applied for the analysis result that shows carbon monoxide and oxygen concentration; A sound light alarming circuit carries out sound and light alarm according to the analysis result of overshoot value; Two signal output apparatus are sent to remote supervisory station to detected carbon monoxide and concentration of oxygen value respectively; Keyboard and remote-control receiving circuit are in order to manually to be provided with various parameters; And external memory storage and power circuit.
See Fig. 2,
Power circuit is that the integrated circuit N1 of LM2675-ADJ, voltage stabilizer N4 and peripheral capacitor C 1～C3, C21, C23, resistance R 1, R31～R35, variable resistor W1, inductance L 1, diode D1, D2, Q14, operational amplifier N3D and the connector J1 that model is 78L05 connect and compose by model, and plug-in unit J1 is connected with outside 18V power supply.Power circuit provides required power supply for each circuit.
See Fig. 3, the Carbon Monoxide Detection element does not draw in the drawings, and connector J6 is connected with the Carbon Monoxide Detection element.What the Carbon Monoxide Detection element adopted is the galvanochemistry sensitive element, and the Carbon Monoxide Detection element is connected with electrode protecting device.Electrode protecting device has a light coupling relay N5, the reference utmost point R of Carbon Monoxide Detection element is connected with two output terminals of light coupling relay N5 respectively with work utmost point S, and two control ends of light coupling relay N5 are connected with the input end of voltage stabilizer N4 with the VA of power circuit end; When the detecting element outage quits work, pass through light coupling relay N5 short circuit conducting, realize storage protection with reference to utmost point R and work utmost point S with reference to utmost point R and work utmost point S.
See Fig. 3, the amplifying circuit that the output terminal of Carbon Monoxide Detection element is corresponding with it connects, and this amplifying circuit is connected and composed by operational amplifier N3A, N3B, N3C and peripheral resistance R 20～R30, R62, variable resistor W4, W5, thermistor RT, capacitor C 9～C11, C22 thereof.This amplifying circuit amplifies the signal of Carbon Monoxide Detection circuit output, outputs to corresponding A/D converter N10 then.See Fig. 4, the model of A/D converter N10 is TLC1549.The I/O mouth that signal is outputed to single-chip microcomputer after A/D converter N10 changes signal carries out data acquisition.
See Fig. 3, the oxygen detection element does not draw in the drawings, connector J5 is connected with the oxygen detection element, the output terminal of oxygen detection element is by connector J5 and corresponding amplifying circuit connection, and this amplifying circuit is connected and composed by operational amplifier N2A, N2B, N2C, N2D and peripheral resistance R 2～R6, R9～R16, variable resistor W2, W3, capacitor C 4, C12 thereof.This amplifying circuit amplifies the signal of oxygen detection circuit output, outputs to corresponding A/D converter N9 then.See Fig. 4, the model of A/D converter N9 is TLC1549.The I/O mouth that signal is outputed to single-chip microcomputer N11 after A/D converter N9 changes signal carries out data acquisition.
See Fig. 4, single-chip microcomputer N11 model is STC89LE52RC.Oxygen display circuit and carbon monoxide display circuit are that the charactron driver N12 of BC7281A, serial shift register N13, LED display module N14, N15 and peripheral resistance R 38, R39, R41, R42, R46～R53, capacitor C 7, C8, C14, the triode Q5～Q10 that model is 74LS164 connect and compose by model.Display circuit adopts dynamic scan to show,, and is controlled LED display module N14, N15 by charactron driver N12 and serial shift register N13 and finishes demonstration to charactron driver N12 by two I/O mouth P0.0, P0.1 output serial signals of single-chip microcomputer N11.Keyboard comprises switch key S1～S6.Use keyboard to reset, and to zero point, systematic parameters such as enlargement factor, nonlinear compensation coefficient are provided with.Remote-control receiving circuit is that the receiver of remote-control sytem N7 of TL1838A2 and peripheral resistance R 7, R8, capacitor C 17, electrochemical capacitor C18 connect and compose by model.Receiver of remote-control sytem and telepilot are used, and can be provided with systematic parameter.External memory storage N8 is that model is the external memory storage of the band house dog of X5045.
See Fig. 5, sound light alarming circuit is connected and composed by four LED 1～LED4, resistance R 57～R60, R18, R19, triode Q4 and hummer, and LED 1～LED4 and hummer are connected in parallel.The I/O mouth P2.2 of single-chip microcomputer N11 is by the open and close of resistance R 18 and triode Q4 control warning circuit.When detected numerical value surpasses setting, the I/0 mouth P2.2 of single-chip microcomputer N11 output high level, the Q4 conducting, light emitting diode is bright, buzzer call.
See Fig. 6, the oxygen signal output apparatus is connected and composed by triode Q11～Q13 and resistance R 61, R63～R65.The oxygen signal output apparatus is by the P0.5 foot control system of single-chip microcomputer N11, single-chip microcomputer N11 is converted into detected oxygen density value (0～2 5%) frequency signal of 200～1000Hz, export by the P0.5 pin, when P0.5 pin output high level, triode Q11 conducting, the current signal of oxygen signal output apparatus output 5mA, this signal outputs to monitoring station by the light coupling relay N6 and the connector J2 of oxygen communication state testing circuit.
See Fig. 6, the output terminal of oxygen signal output apparatus also connects with corresponding oxygen communication state testing circuit, and oxygen communication state testing circuit is that light coupling relay N6, LED 5, resistance R 40, R66, R74, the voltage stabilizing diode Q16 of TLP521-2 connects and composes by model.Wherein, resistance R 66, R73, voltage stabilizing diode Q16 connect to form and detect partly.Resistance R 66, R73 series connection back one end and the output terminal of oxygen signal output apparatus are that the collector of triode Q13 is connected other end ground connection; Voltage stabilizing diode Q16 is connected in parallel on the two ends of resistance R 73 and the plus earth of Q16, the junction of resistance R 66, R73 is connected with the P0.6 pin of single-chip microcomputer N11 as the output terminal of this test section, the P0.7 pin of single-chip microcomputer N11 is connected with 5 pin of light coupling relay N6, LED 5 is connected with resistance R 40, the positive pole of LED5 is connected with power circuit VB end, and resistance R 40 is connected with 6 pin of light coupling relay N6.The output terminal of oxygen signal output apparatus also is connected with 3 pin of light coupling relay N6, and 2 pin of light coupling relay N6 are connected with connector J2 with 4 pin.The signal of oxygen signal transmission of electricity road output outputs to monitoring station behind oxygen communication state testing circuit, wherein, LED 5 state to communication under the control of single-chip microcomputer shows, makes on-the-spot staff can understand the communication state of sensor and monitoring station.
See Fig. 6, the carbon monoxide signal output apparatus is connected and composed by triode Q1～Q3, resistance R 67, R69～R71.The P0.3 foot control system of carbon monoxide signal transmission of electricity route single-chip microcomputer, (0～1000ppm) is converted into the frequency signal of 200～1000Hz to single-chip microcomputer with detected carbonomonoxide concentration value, export by the P0.3 pin, when P0.3 pin output high level, the Q1 conducting, make the current signal of carbon monoxide signal output apparatus output 5mA, this signal outputs to monitoring station by the light coupling relay N6 and the connector J2 of carbon monoxide communication state testing circuit.
See Fig. 6, the output terminal of carbon monoxide signal output apparatus and corresponding carbon monoxide communication state testing circuit connect, and carbon monoxide communication state testing circuit is that light coupling relay N6, LED 6, resistance R 17, R56, R72, the voltage stabilizing diode Q15 of TLP521-2 connects and composes by model.Wherein, resistance R 56, R72, voltage stabilizing diode Q15 connect to form and detect partly.Resistance R 56, R72 series connection back one end and the output terminal of carbon monoxide signal output apparatus are that the collector of triode Q3 is connected other end ground connection; Voltage stabilizing diode Q15 is connected in parallel on the two ends of resistance R 72 and the plus earth of Q15, the junction of resistance R 56, R72 is connected with the P0.4 pin of single-chip microcomputer N11 as the output terminal of this test section, the P2.7 pin of single-chip microcomputer N11 is connected with 7 pin of light coupling relay N6, LED 6 is connected with resistance R 17, the positive pole of LED6 is connected with power circuit VB end, and resistance R 17 is connected with 8 pin of light coupling relay N6.The output terminal of carbon monoxide signal output apparatus also is connected with 1 pin of light coupling relay N6, and 2 pin of light coupling relay N6 are connected with connector J2 with 4 pin.The signal of carbon monoxide signal transmission of electricity road output outputs to monitoring station behind carbon monoxide communication state testing circuit, wherein, LED 6 state to communication under the control of single-chip microcomputer N11 shows, makes on-the-spot staff can understand the communication state of sensor and monitoring station.
When detecting, this carbon monoxide, oxygen combination sensor can detect oxygen in the environment and carbonomonoxide concentration simultaneously, and detected signal shown by each self-corresponding display circuit, and the signal output apparatus of signal by separately can be outputed to monitoring station, when detected oxygen concentration or carbonomonoxide concentration overshoot scope, acoustooptic alarm system sends alerting signal.In addition, because the Carbon Monoxide Detection element also is connected with electrode protecting device, when the detecting element outage quits work, can store protection to the electrode of Carbon Monoxide Detection element.All be connected with the communication state observation circuit on two signal output apparatus, but the communication state of monitoring sensor and monitoring station, and show by the pilot lamp at scene, make on-the-spot staff also can understand the communication state of sensor and monitoring station.
Claims (10)
1, a kind of carbon monoxide, oxygen combination sensor is characterized in that comprising:
Carbon Monoxide Detection element and oxygen detection element detect carbon monoxide and concentration of oxygen respectively;
Two amplifying circuits, the detection signal to Carbon Monoxide Detection element and oxygen detection element amplifies respectively;
Two A/D converters, the signal after respectively amplifying circuit being amplified carries out analog to digital conversion;
A single-chip microcomputer reads analog-to-digital data, analyzes back output analysis result as calculated, and analysis result is outputed to display circuit and sound light alarming circuit respectively;
Two display circuits are respectively applied for the analysis result that shows carbon monoxide and oxygen;
A sound light alarming circuit carries out sound and light alarm according to the analysis result of overshoot value;
2, carbon monoxide according to claim 1, oxygen combination sensor is characterized in that: also include two signal output apparatus, external memory storage, keyboard, remote-control receiving circuit and power circuit; Described two signal output apparatus are sent to remote supervisory station to detected carbonomonoxide concentration value and oxygen density value respectively.
3, carbon monoxide according to claim 2, oxygen combination sensor is characterized in that: two signal output apparatus also are connected with the communication state observation circuit respectively; Described communication state observation circuit is monitored the communications status of communication line in real time, and at the scene communication state is shown by light-emitting device.
4, carbon monoxide according to claim 3, oxygen combination sensor is characterized in that: described communication state observation circuit includes light coupling relay and light emitting diode thereof; The control end of light coupling relay is connected with loaded line with the output terminal of above-mentioned signal output apparatus respectively, and two output terminals of light coupling relay are connected with light emitting diode with a signal output part of single-chip microcomputer respectively, by the conducting of Single-chip Controlling light emitting diode.
5, carbon monoxide according to claim 1, oxygen combination sensor is characterized in that: described Carbon Monoxide Detection element also is connected with electrode protecting device.
6, carbon monoxide according to claim 5, oxygen combination sensor, it is characterized in that: described electrode protecting device has a normally closed light coupling relay, the reference utmost point R of Carbon Monoxide Detection element is connected with two output terminals of light coupling relay respectively with work utmost point S, and two control ends of light coupling relay are connected with power circuit; When the detecting element outage quits work, pass through light coupling relay short circuit conducting with reference to utmost point R and work utmost point S.
7, carbon monoxide according to claim 1, oxygen combination sensor is characterized in that: described single-chip microcomputer model is STC89LE52RC.
8, carbon monoxide according to claim 2, oxygen combination sensor is characterized in that: described remote-control receiving circuit has the receiver of remote-control sytem that model is TL1838A2.
9, carbon monoxide according to claim 2, oxygen combination sensor is characterized in that: described external memory storage is that model is the external memory storage of the band house dog of X5045.
10, carbon monoxide according to claim 1, oxygen combination sensor is characterized in that: described A/D transducer model is TLC1549.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022736 CN2884200Y (en) | 2006-01-24 | 2006-01-24 | Composite sensor for carbon oxide (S) and oxygen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022736 CN2884200Y (en) | 2006-01-24 | 2006-01-24 | Composite sensor for carbon oxide (S) and oxygen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2884200Y true CN2884200Y (en) | 2007-03-28 |
Family
ID=37957260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620022736 Expired - Fee Related CN2884200Y (en) | 2006-01-24 | 2006-01-24 | Composite sensor for carbon oxide (S) and oxygen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2884200Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020263A (en) * | 2014-06-25 | 2014-09-03 | 李丹 | Indoor harmful gas detection system |
-
2006
- 2006-01-24 CN CN 200620022736 patent/CN2884200Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020263A (en) * | 2014-06-25 | 2014-09-03 | 李丹 | Indoor harmful gas detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201412183Y (en) | Real-time monitoring and early warning device for mine gas outburst | |
| CN202171616U (en) | Photovoltaic array conflux measurement and control apparatus | |
| CN107515277A (en) | A kind of more gas detecting systems of portable wireless ship's space | |
| CN2884199Y (en) | Composite sensor for methane and carbon monoxide | |
| CN204703959U (en) | Multiparameter gas determinator | |
| CN2884200Y (en) | Composite sensor for carbon oxide (S) and oxygen | |
| CN208888992U (en) | A kind of gas detection alarm device based on wireless cloud | |
| CN202995977U (en) | Household combustible gas safety detecting and alarming system | |
| CN202443010U (en) | Handheld water quality testing instrument | |
| CN205607928U (en) | Acoustic emission vibration detection device based on piezoceramics piece | |
| CN205680231U (en) | A kind of electric fire monitoring system peculiar to vessel based on two lines bus | |
| CN2884198Y (en) | Composite sensor for methane and temp. | |
| CN206388047U (en) | A kind of Intelligent water level detection control apparatus | |
| CN202903945U (en) | Direct-current system line grounding fault alarm apparatus | |
| CN110095153A (en) | One kind ten unifies Multifunction Sensor | |
| CN201464403U (en) | Novel SF6 transducer | |
| CN210664560U (en) | Humidity sensing intelligent terminal with GPS positioning function | |
| CN211176335U (en) | Remote low-power consumption natural gas leakage detection intelligent terminal | |
| CN203552374U (en) | Acousto-optic alarm device for serially connecting two-wire current loop 4-20MA | |
| CN109268073B (en) | Mining gas measurement safety monitoring system | |
| CN209400618U (en) | A kind of high-tension cable monitoring device | |
| CN207123522U (en) | A kind of more gas detecting systems of portable wireless ship's space | |
| CN207351944U (en) | A kind of hydrazine gas monitor | |
| CN201488824U (en) | Temperature-measuring type monitoring and alarming module | |
| CN2932385Y (en) | Single-probe double detection intelligent remote control methane sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070328 Termination date: 20110124 |