CN204241034U - Multifunctional environment parameter detecting instrument - Google Patents
Multifunctional environment parameter detecting instrument Download PDFInfo
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- CN204241034U CN204241034U CN201420783958.8U CN201420783958U CN204241034U CN 204241034 U CN204241034 U CN 204241034U CN 201420783958 U CN201420783958 U CN 201420783958U CN 204241034 U CN204241034 U CN 204241034U
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Abstract
The utility model discloses a kind of Multifunctional environment parameter detecting instrument, this detector comprises: power circuit, the single-chip microcomputer be connected with power circuit, connect the Temperature Humidity Sensor of single-chip microcomputer, warning circuit and display screen respectively, the infrared-gas room be connected with power circuit, be connected to the infrared temperature-test sensor between infrared-gas room and the communication port of single-chip microcomputer, amplifying circuit and analog to digital conversion circuit in turn, connect the formaldehyde sensor of analog to digital conversion circuit.The utility model accurately can detect multiple environmental parameters such as comprising temperature, humidity, carbon monoxide content and content of formaldehyde, and structure is simple, small volume and being convenient for carrying, and tool has a broad prospect of the use.
Description
Technical field
The utility model relates to a kind of pick-up unit, especially relates to one and automatically can comprise temperature, humidity, the carbon monoxide content even isoparametric Multifunctional environment parameter detecting instrument of content of formaldehyde by testing environment.
Background technology
Nowadays the requirement of people to quality of life is more and more higher, especially can special concern daily life, the air quality of the residing environment of work and environmental information, such as, the parameter informations such as temperature, humidity, content of formaldehyde.Wherein, even if temperature and humidity can be obtained by thermometer, hygronom, simple and clear, and the detection of content of formaldehyde needs to use instrumentation.
Such as, CN201320341713.5 proposes a kind of triple channel formaldehyde examination device, and the first detection cell, the second detection cell and the 3rd detection cell are connected with the 3rd flow in pipes with the first flow in pipes, the second flow in pipes respectively; First detects liquid flow in pipes, the second detection liquid flow in pipes and the 3rd detects liquid flow in pipes and is connected with the 3rd detection cell with the first detection cell, the second detection cell respectively; First detects liquid flow in pipes, second detects liquid flow in pipes and the 3rd and detects liquid flow in pipes and detect liquid case, second respectively with first and detect liquid case and the 3rd and detect liquid case and be connected.This technical scheme adopts triple channel to detect formaldehyde, combines the advantage of different detection liquid, can the content of comprehensive descision formaldehyde.
And for example, CN201220041384.8 proposes a kind of formaldehyde testing equipment, comprises formaldehyde test paper, the fan blower that characterized by further comprising formaldehyde test paper fixed mount, formaldehyde test carton and controlled by control panel; Wherein said formaldehyde test paper is placed on formaldehyde test paper fixed mount, described formaldehyde test paper fixed mount is placed in formaldehyde test carton the extracting replacing that also can slide, described formaldehyde test carton is positioned at the air outlet place of fan blower, and formaldehyde test paper is corresponding with the air outlet of fan blower.The exhausting that this technical scheme is carried out at regular time and quantity by control panel to fan blower, realizes the reaction time of accelerating formaldehyde test paper, can Rapid Detection of Formaldehyde.
Although above-mentioned existing formaldehyde equipment can detect the content of formaldehyde under current environment fast and accurately, accurately foundation is assessed to Evaluation Environment Quality advance, these functions of the equipments are single, cannot meet the actual needs detected environment multiparameter.
Utility model content
For overcoming the defect of prior art, the utility model proposes a kind of Multifunctional environment parameter detecting instrument, can multiple environmental parameter be detected, comprise the parameters such as temperature, humidity, carbon monoxide content and content of formaldehyde, easy to use and practical.
The utility model adopts following technical scheme to realize: a kind of Multifunctional environment parameter detecting instrument, this detector comprises: power circuit, the single-chip microcomputer be connected with power circuit, connect the Temperature Humidity Sensor of single-chip microcomputer, warning circuit and display screen respectively, the infrared-gas room be connected with power circuit, be connected to the infrared temperature-test sensor between infrared-gas room and the communication port of single-chip microcomputer, amplifying circuit and analog to digital conversion circuit in turn, connect the formaldehyde sensor of analog to digital conversion circuit.
Wherein, infrared-gas room comprises: the air chamber with air intake opening and gas outlet; Be arranged on the infrared light supply of air chamber wherein on a madial wall, this infrared light supply connects the output terminal of power circuit; Between infrared light supply and infrared temperature-test sensor, arrange filter set, this filter set comprises the optical filter of multiple different wave lengths of spread configuration.
3, Multifunctional environment parameter detecting instrument according to claim 1, it is characterized in that, analog to digital conversion circuit comprises the modulus conversion chip that model is AD7689, this AD7689 modulus conversion chip connects the driving chip that model is ADA4841, and this AD7689 modulus conversion chip connects the communication port of single-chip microcomputer by SPI interface.
Wherein, it is DHT11 numeral temperature and humidity sensing chip that Temperature Humidity Sensor comprises model, the power end VDD of this DHT11 numeral temperature and humidity sensing chip connects+3.3V external power source, ground connection after data terminal DATA series resistor R1 and electric capacity C1, and data terminal DATA is connected to one of them FPDP of single-chip microcomputer.
Wherein, warning circuit comprises: base stage connects the triode G1 of the control port PA0 of single-chip microcomputer by resistance R2, the grounded emitter of this triode G1, the negative electrode of collector connecting luminous diode D1, the anode of this light emitting diode D1 connects the external power source of+3.3V; Base stage connects the triode G2 of the control port PA1 of single-chip microcomputer by resistance R3, the grounded emitter of this triode G2, collector connect the power cathode of loudspeaker LS1, and the positive source of these loudspeaker LS1 connects the external power source of+3.3V by resistance R4.
Compared with prior art, the utility model has following beneficial effect:
The utility model take single-chip microcomputer as core, accurately can detect multiple environmental parameters such as comprising temperature, humidity, carbon monoxide content and content of formaldehyde, and structure is simple, small volume and being convenient for carrying, and tool has a broad prospect of the use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of infrared gas analysis room;
Fig. 3 is the circuit diagram of Temperature Humidity Sensor;
Fig. 4 is the circuit diagram of warning circuit.
Embodiment
The utility model proposes a kind of Multifunctional environment parameter detecting instrument, can multiple environmental parameter be detected, comprise the parameters such as temperature, humidity, carbon monoxide content and content of formaldehyde, easy to use and practical.
In a specific embodiment as shown in Figure 1, this detector specifically comprises: power circuit 1, the single-chip microcomputer 2 that power end is connected with the output terminal of power circuit 1, connect the Temperature Humidity Sensor 3 of single-chip microcomputer 2, warning circuit 4 and display screen 5 (such as display screen 5 is LED display) respectively, the infrared-gas room 6 be connected with the output terminal of power circuit 1, infrared temperature-test sensor 7, amplifying circuit 8 and analog to digital conversion circuit 9 between the communication port being connected to infrared-gas room 6 and single-chip microcomputer 2 in turn, connect the formaldehyde sensor 10 of analog to digital conversion circuit 9.
Powered for single-chip microcomputer 2 by power circuit 1.Temperature Humidity Sensor 3 detects temperature under current environment and humidity data sends single-chip microcomputer to, infrared-gas room 6, infrared temperature-test sensor 7, amplifying circuit 8 and analog to digital conversion circuit 9 match, detect multiple gases (the such as carbon monoxide under current environment, carbon dioxide and hydrocarbon) content, formaldehyde sensor 10 detects the content of formaldehyde under current environment, convert digital signal to by analog to digital conversion circuit 9 and send single-chip microcomputer 2 to, each environmental parameter sends to display screen 5 to show by single-chip microcomputer 2, and warning circuit 4 can be started when certain parameter exceeds setting value and send alerting signal.
Shown in composition graphs 2, infrared-gas room 6 comprises: air chamber 61, this air chamber 61 has air intake opening 611 and gas outlet 612; Be arranged on the infrared light supply 62 of air chamber 61 wherein on a madial wall, this infrared light supply 62 connects the output terminal of power circuit 1; The filter set (filter set is between infrared light supply 62 and infrared temperature-test sensor 7 are adopted) of the multiple different wave length of spread configuration in air chamber 61 and on the relative inner wall of infrared light supply 62 position, such as Fig. 2 comprise 4.64um optical filter 631 for detecting carbon monoxide content, for detect carbon dioxide content 4.26um optical filter 632, for detect hydrocarbon content 3.4um optical filter 633 and for providing the 4.0um optical filter 634 of reference signal.Infrared temperature-test sensor 7 is arranged on the rear of filter set, and this infrared temperature-test sensor 7 adopts chip model to be the four-way thermopile IR detector of TPS4339, and the four-way of this TPS4339 chip detects gas respectively by the temperature after above-mentioned 4 optical filters.The principle of work of infrared-gas room 6 is consistent with the principle of work of existing infrared gas analyzer, is not described in detail at this.
Amplifying circuit 8 adopts model to be the signal amplification chip of LT1077, analog to digital conversion circuit 9 adopts model to be AD7689 modulus conversion chip, this AD7689 modulus conversion chip connects the driving chip that model is ADA4841, and this AD7689 modulus conversion chip connects the communication port of single-chip microcomputer 2 by SPI interface.Testing result carries out, after amplification process, converting by analog to digital conversion circuit 9 communication port that data-signal sends single-chip microcomputer 2 to through amplifying circuit 8 by infrared temperature-test sensor 7.
In addition, formaldehyde sensor 10 adopts the electrochemical sensor CH20/S-10 of MEMBRAPOR company of Switzerland, and its testing result is also through analog to digital conversion circuit 9 and sends single-chip microcomputer 2 to.
Shown in composition graphs 3, Temperature Humidity Sensor 3 adopts model to be DHT11 numeral temperature and humidity sensing chip U1, the power end VDD of this chip U1 connects+3.3V external power source, ground connection after data terminal DATA series resistor R1 and electric capacity C1, and data terminal DATA is connected to one of them FPDP of single-chip microcomputer 2, send the temperature and humidity measure result of output to single-chip microcomputer 2.
Shown in composition graphs 4, warning circuit 4 comprises: base stage connects the triode G1 of the control port PA0 of single-chip microcomputer 2 by resistance R2, the grounded emitter of this triode G1, the negative electrode of collector connecting luminous diode D1, the anode of this light emitting diode D1 connects the external power source of+3.3V; Base stage connects the triode G2 of the control port PA1 of single-chip microcomputer 2 by resistance R3, the grounded emitter of this triode G2, collector connect the power cathode of loudspeaker LS1, and the positive source of these loudspeaker LS1 connects the external power source of+3.3V by resistance R4.When single-chip microcomputer 2 detects that certain environmental parameter exceedes setting value, when the control port PA0 of single-chip microcomputer 2 exports high level, triode G1 conducting, thus light emitting diode D1 is luminous as warning light signal, or/and, when the control port PA1 of single-chip microcomputer 2 exports high level, triode G2 conducting, thus connect between loudspeaker LS1 and+3.3V external power source, loudspeaker LS sends alarm sound signal.
Certainly, all right expanding peripherals interface of single-chip microcomputer 2, is connected with computer as by RS232 interface, sends the environmental parameter of detection to computer, further expand function and the use occasion of the utility model detector.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a Multifunctional environment parameter detecting instrument, it is characterized in that, this detector comprises: power circuit, the single-chip microcomputer be connected with power circuit, connect the Temperature Humidity Sensor of single-chip microcomputer, warning circuit and display screen respectively, the infrared-gas room be connected with power circuit, is connected to the infrared temperature-test sensor between infrared-gas room and the communication port of single-chip microcomputer, amplifying circuit and analog to digital conversion circuit in turn, connects the formaldehyde sensor of analog to digital conversion circuit.
2. Multifunctional environment parameter detecting instrument according to claim 1, it is characterized in that, infrared-gas room comprises: the air chamber with air intake opening and gas outlet; Be arranged on the infrared light supply of air chamber wherein on a madial wall, this infrared light supply connects the output terminal of power circuit; Between infrared light supply and infrared temperature-test sensor, arrange filter set, this filter set comprises the optical filter of multiple different wave lengths of spread configuration.
3. Multifunctional environment parameter detecting instrument according to claim 1, it is characterized in that, analog to digital conversion circuit comprises the modulus conversion chip that model is AD7689, this AD7689 modulus conversion chip connects the driving chip that model is ADA4841, and this AD7689 modulus conversion chip connects the communication port of single-chip microcomputer by SPI interface.
4. Multifunctional environment parameter detecting instrument according to claim 1, it is characterized in that, it is DHT11 numeral temperature and humidity sensing chip that Temperature Humidity Sensor comprises model, the power end VDD of this DHT11 numeral temperature and humidity sensing chip connects+3.3V external power source, ground connection after data terminal DATA series resistor R1 and electric capacity C1, and data terminal DATA is connected to one of them FPDP of single-chip microcomputer.
5. Multifunctional environment parameter detecting instrument according to claim 1, it is characterized in that, warning circuit comprises: base stage connects the triode G1 of the control port PA0 of single-chip microcomputer by resistance R2, the grounded emitter of this triode G1, the negative electrode of collector connecting luminous diode D1, the anode of this light emitting diode D1 connects the external power source of+3.3V; Base stage connects the triode G2 of the control port PA1 of single-chip microcomputer by resistance R3, the grounded emitter of this triode G2, collector connect the power cathode of loudspeaker LS1, and the positive source of these loudspeaker LS1 connects the external power source of+3.3V by resistance R4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783958.8U CN204241034U (en) | 2014-12-11 | 2014-12-11 | Multifunctional environment parameter detecting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783958.8U CN204241034U (en) | 2014-12-11 | 2014-12-11 | Multifunctional environment parameter detecting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241034U true CN204241034U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420783958.8U Expired - Fee Related CN204241034U (en) | 2014-12-11 | 2014-12-11 | Multifunctional environment parameter detecting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241034U (en) |
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2014
- 2014-12-11 CN CN201420783958.8U patent/CN204241034U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151211 |
|
| EXPY | Termination of patent right or utility model |