CN213715109U - Semiconductor type carbon monoxide concentration monitoring device - Google Patents
Semiconductor type carbon monoxide concentration monitoring device Download PDFInfo
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- CN213715109U CN213715109U CN202022604587.0U CN202022604587U CN213715109U CN 213715109 U CN213715109 U CN 213715109U CN 202022604587 U CN202022604587 U CN 202022604587U CN 213715109 U CN213715109 U CN 213715109U
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Abstract
The utility model relates to a gas safety technical field is used to family's intelligence, specifically discloses a semiconductor formula carbon monoxide concentration monitoring devices, wherein, include: the device comprises a main controller, a temperature monitoring circuit, a probe voltage division circuit and a semiconductor type carbon monoxide probe; the temperature monitoring circuit is used for monitoring the current environment temperature in real time and sending the monitored current environment temperature to the main controller; the semiconductor type carbon monoxide probe is used for monitoring the concentration of carbon monoxide and can generate the change of the resistance value when the concentration of the carbon monoxide changes; the probe voltage division circuit can generate voltage change according to the change of the resistance value and send the current voltage value to the main controller; the main controller is used for calculating the current concentration value of the carbon monoxide according to the current environment temperature and the voltage value. The utility model provides a semiconductor formula carbon monoxide concentration monitoring devices can effectively satisfy the long-term operation requirement of carbon monoxide gas alarm.
Description
Technical Field
The utility model relates to a gas safety technical field is used to family's intelligence, especially relates to a semiconductor formula carbon monoxide concentration monitoring devices.
Background
At present, toxic gas carbon monoxide can be generated due to insufficient combustion of oxygen, and the gas can be generated in a household kitchen due to insufficient combustion of natural gas or coal, so that the safety of lives of people is seriously threatened. In recent years, carbon monoxide gas alarms are increasingly being used in residential communities. At present, the carbon monoxide alarm adopts the integral type design, and the probe is fixed in the alarm bottom plate completely, can't mark alone, and traditional semiconductor formula carbon monoxide gas monitoring devices also has the characteristics that detect gas concentration single, can not realize the gaseous multiple concentration output of carbon monoxide, lacks the flexibility, is difficult to satisfy the requirement of using at present.
Disclosure of Invention
The utility model provides a semiconductor formula carbon monoxide concentration monitoring devices solves the problem that exists can not satisfy the long-term operation requirement of carbon monoxide gas alarm among the correlation technique.
As an aspect of the present invention, there is provided a semiconductor type carbon monoxide concentration monitoring device, including: the temperature monitoring circuit and the probe voltage dividing circuit are both connected with the main controller, and the probe voltage dividing circuit is also connected with the semiconductor type carbon monoxide probe;
the temperature monitoring circuit is used for monitoring the current environment temperature in real time and sending the monitored current environment temperature to the main controller;
the semiconductor type carbon monoxide probe is used for monitoring the concentration of carbon monoxide and can generate the change of the resistance value when the concentration of the carbon monoxide changes;
the probe voltage division circuit can generate voltage change according to the change of the resistance value and send the current voltage value to the main controller;
and the main controller is used for calculating the current concentration value of the carbon monoxide according to the current environment temperature and the voltage value.
Furthermore, semiconductor formula carbon monoxide concentration monitoring devices still includes probe detection circuitry, probe detection circuitry respectively with semiconductor formula carbon monoxide probe and main control unit connects, probe detection circuitry is used for detecting operating voltage value when semiconductor formula carbon monoxide probe heats, main control unit can be according to operating voltage value judges whether semiconductor formula carbon monoxide probe takes place to damage.
Further, the semiconductor type carbon monoxide probe comprises a carbon monoxide sensor.
Furthermore, semiconductor formula carbon monoxide concentration monitoring devices still includes power supply circuit, power supply circuit respectively with temperature monitoring circuit, main control unit, probe bleeder circuit and semiconductor formula carbon monoxide probe electricity are connected, power supply circuit is used for respectively for temperature monitoring circuit, main control unit, probe bleeder circuit and semiconductor formula carbon monoxide probe provide the power supply.
Further, the semiconductor type carbon monoxide concentration monitoring device further comprises an output interface, wherein the output interface is in communication connection with the main controller, and the output interface is used for outputting the current concentration value of the carbon monoxide gas calculated by the main controller.
Further, the temperature monitoring circuit includes a thermistor or a temperature sensor.
Further, the main controller comprises a single chip microcomputer.
The utility model provides a semiconductor formula carbon monoxide concentration monitoring devices can be through calibrating the corresponding relation picture that obtains resistance and concentration in advance to carbon monoxide gas concentration under standard environment, then real-time supervision ambient temperature to when the detection concentration of semiconductor formula carbon monoxide probe changes, arouse the voltage variation, combine the corresponding relation of current temperature value inquiry resistance and concentration according to current voltage value, obtain the actual detection concentration value of semiconductor formula carbon monoxide probe. The semiconductor type carbon monoxide concentration monitoring device can effectively meet the long-term use requirement of the carbon monoxide gas alarm, can realize the output of various concentrations of carbon monoxide gas, and has the advantages of compact structure, wide application range, low cost, safety and reliability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a block diagram of a semiconductor type carbon monoxide concentration monitoring device according to the present invention.
Fig. 2 is a schematic circuit diagram of the probe detection circuit provided by the present invention.
Fig. 3 is a schematic circuit diagram of the probe voltage dividing circuit provided by the present invention.
Fig. 4 is a flowchart illustrating a specific implementation process of the semiconductor type carbon monoxide concentration monitoring device according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this embodiment, a semiconductor type carbon monoxide concentration monitoring device is provided, and fig. 1 is a block diagram of a semiconductor type carbon monoxide concentration monitoring device provided by an embodiment of the present invention, as shown in fig. 1, including: the temperature monitoring device comprises a main controller 1, a temperature monitoring circuit 3, a probe voltage division circuit 4 and a semiconductor type carbon monoxide probe 2, wherein the temperature monitoring circuit 3 and the probe voltage division circuit 4 are both connected with the main controller 1, and the probe voltage division circuit 4 is also connected with the semiconductor type carbon monoxide probe 2;
the temperature monitoring circuit 3 is used for monitoring the current environment temperature in real time and sending the monitored current environment temperature to the main controller;
the semiconductor type carbon monoxide probe 2 is used for monitoring the concentration of carbon monoxide and can generate the change of resistance value when the concentration of the carbon monoxide changes;
the probe voltage division circuit 4 can generate voltage change according to the change of the resistance value and send the current voltage value to the main controller;
the main controller 1 is configured to calculate a current concentration value of carbon monoxide according to the current ambient temperature and the voltage value.
The embodiment of the utility model provides a semiconductor formula carbon monoxide concentration monitoring devices can be through calibrating in advance the corresponding relation picture that obtains resistance and concentration to carbon monoxide gas concentration under standard environment, then real-time supervision ambient temperature to when the detection concentration of semiconductor formula carbon monoxide probe changes, arouse the voltage variation, combine the corresponding relation of current temperature value inquiry resistance and concentration according to current voltage value, obtain the actual detection concentration value of semiconductor formula carbon monoxide probe. The semiconductor type carbon monoxide concentration monitoring device can effectively meet the long-term use requirement of the carbon monoxide gas alarm, can realize the output of various concentrations of carbon monoxide gas, and has the advantages of compact structure, wide application range, low cost, safety and reliability.
It should be understood that, before the calculation of the current concentration of the carbon monoxide gas, calibration of a standard concentration is performed, that is, a corresponding graph of the resistance in the semiconductor type carbon monoxide probe and the carbon monoxide gas concentration is obtained by calibration at a standard ambient temperature.
After a corresponding relation graph of the resistance in the semiconductor type carbon monoxide probe and the carbon monoxide gas concentration is obtained through calibration, the change of the voltage is detected through the probe voltage dividing circuit, the current voltage value is fed back to the main controller, the main controller can obtain a resistance value according to the current voltage value in a reverse-deducing mode, the resistance value is calibrated through the monitored current environment temperature, and the current carbon monoxide gas concentration can be obtained through comparing the calibrated resistance value with the corresponding relation graph of the resistance in the semiconductor type carbon monoxide probe and the carbon monoxide gas concentration.
Specifically, semiconductor formula carbon monoxide concentration monitoring devices still includes probe detection circuitry 7, probe detection circuitry 7 respectively with semiconductor formula carbon monoxide probe 2 and main control unit 1 is connected, probe detection circuitry 7 is used for detecting operating voltage value when semiconductor formula carbon monoxide probe 2 heats, main control unit 1 can be according to operating voltage value judges whether semiconductor formula carbon monoxide probe 2 takes place to damage.
In order to determine whether or not the semiconductor type carbon monoxide probe 2 is damaged, the probe detection circuit 7 may detect whether or not the semiconductor type carbon monoxide probe 2 is damaged. The probe detection circuit 7 controls the on-off of the probe heating circuit through the MOS tube, and then reads a voltage value to judge whether the heating resistor in the semiconductor type carbon monoxide probe 2 is burnt out.
As shown in fig. 2, the probe detection circuit 7 is a schematic circuit diagram.
It should be understood that when the concentration of the carbon monoxide gas changes, the resistance value of the semiconductor type carbon monoxide probe 2 changes, the probe voltage dividing circuit 4 connected with the semiconductor type carbon monoxide probe 2 generates a voltage change, the main controller 1 monitors the voltage change of the probe voltage dividing circuit 4, the current temperature value is obtained through the temperature monitoring circuit 3, and the main controller 1 obtains the current concentration value through calculation according to the voltage change of the probe voltage dividing circuit 4 and the temperature value obtained by the temperature monitoring circuit 3.
Specifically, a specific circuit schematic diagram of the probe voltage dividing circuit 4 is shown in fig. 3.
It should be understood that a plurality of resistors with different resistance values are arranged in the probe voltage dividing circuit 4, which can adapt to different accuracies, so that any one of the resistors can be selected according to needs.
In some embodiments, the semiconductor carbon monoxide probe comprises a carbon monoxide sensor.
Preferably, the semiconductor type carbon monoxide probe 2 may be an MP7 carbon monoxide sensor.
Specifically, semiconductor formula carbon monoxide concentration monitoring devices still includes power supply circuit 5, power supply circuit 5 respectively with temperature monitoring circuit 3, main control unit 1, probe bleeder circuit 4 and semiconductor formula carbon monoxide probe 2 electricity are connected, power supply circuit 5 is used for respectively for temperature monitoring circuit 3, main control unit 1, probe bleeder circuit 4 and semiconductor formula carbon monoxide probe 2 provide the power supply.
The power supply circuit 5 may output the required voltage through the LDO device or the DC-DC chip circuit, and the main controller 1 may output the PWM heating voltage by outputting the PWM control MOS transistor, but is not limited to the above implementation. And in particular are well known to those skilled in the art, and will not be described further herein.
In some embodiments, the semiconductor type carbon monoxide concentration monitoring device further includes an output interface 6, the output interface 6 is in communication connection with the main controller 1, and the output interface 6 is configured to output the current concentration value of the carbon monoxide gas calculated by the main controller 1.
It should be noted that the output interface 6 may be a UART, USART, SPI, IIC, or other common communication methods, but is not limited to the above.
In some embodiments, the temperature monitoring circuit comprises a thermistor or a temperature sensor.
In some embodiments, the master controller comprises a single chip microcomputer.
It should be understood that the main controller 1 may be a 51-chip microcomputer, an STM 8-chip microcomputer, an MSP 430-chip microcomputer, etc., which are commonly used in the art, but are not limited to the above, and are specifically known in the art.
The specific operation process of the semiconductor type carbon monoxide concentration monitoring device provided by the embodiment of the present invention is described in detail with reference to fig. 4.
The utility model provides a semiconductor formula carbon monoxide concentration monitoring devices, when carbon monoxide gas concentration changes, 2 resistance values of semiconductor formula carbon monoxide probe change, the change of voltage can be produced with the probe bleeder circuit 4 that semiconductor formula carbon monoxide probe 2 is connected, main control unit 1 monitors the change of probe bleeder circuit 4 voltage, acquire current temperature value through temperature monitoring circuit 3, main control unit 1 is according to the concentration value that the change of probe bleeder circuit 4 voltage and temperature monitoring circuit 3 obtained, obtain current concentration value through the calculation. The sequence of obtaining the change of the voltage value and obtaining the change of the temperature value can be changed; main control unit 1 also can be after obtaining the 4 voltage changes of probe bleeder circuit, adds the voltage change and converts into resistance change, and the temperature value that combines again obtains concentration value, and this kind of mode is in the utility model discloses the structural range, but not limited to this a mode specifically is known for this technical field personnel, and it is no longer repeated here.
The utility model provides a semiconductor formula carbon monoxide concentration monitoring devices specifically supports the output of carbon monoxide gas concentration, and output range can be between 50ppm to 1000ppm concentration, reaches different demarcation alarm threshold value execution different alarm modes and links other safety equipment elimination dangerous characteristics under the multiple concentration of the alarm of being convenient for. The concentration ranges may vary and are within the scope of the present invention.
The utility model provides a semiconductor gas probe's gaseous monitoring output device of carbon monoxide can select a plurality of concentration value to mark to acquire more accurate data, improve the reliability. The probe is placed in the gas with the calibrated concentration, after the gas is stabilized for a period of time, the main controller 1 obtains a voltage value under the current concentration through the probe voltage division circuit 4 and calculates a resistance value, and the resistance value is used as reference data to be stored. The carbon monoxide calibration concentration can be selected from 50ppm, 200ppm and 500ppm, but is not limited to one or more of the above, and is within the scope of the invention.
To sum up, the utility model provides a semiconductor formula carbon monoxide concentration monitoring devices supports the output of concrete carbon monoxide gas concentration, and output range is between 50ppm to 1000ppm concentration, reaches different demarcation alarm threshold value execution different alarm modes and links other safety equipment elimination dangerous characteristics under the multiple concentration of the alarm of being convenient for. The alarm device has the advantages that independent calibration is conveniently carried out, the separation of the alarm device and the concentration monitoring device in the alarm device is realized, the equipment is reliably ensured, the system design structure is compact, the long-term use requirement of the alarm device can be effectively met, the application range is wide, the use cost is reduced, and the alarm device is safe and reliable.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (7)
1. A semiconductor type carbon monoxide concentration monitoring device, comprising: the temperature monitoring circuit and the probe voltage dividing circuit are both connected with the main controller, and the probe voltage dividing circuit is also connected with the semiconductor type carbon monoxide probe;
the temperature monitoring circuit is used for monitoring the current environment temperature in real time and sending the monitored current environment temperature to the main controller;
the semiconductor type carbon monoxide probe is used for monitoring the concentration of carbon monoxide and can generate the change of the resistance value when the concentration of the carbon monoxide changes;
the probe voltage division circuit can generate voltage change according to the change of the resistance value and send the current voltage value to the main controller;
and the main controller is used for calculating the current concentration value of the carbon monoxide according to the current environment temperature and the voltage value.
2. The semiconductor type carbon monoxide concentration monitoring device according to claim 1, further comprising a probe detection circuit, wherein the probe detection circuit is connected to the semiconductor type carbon monoxide probe and the main controller, the probe detection circuit is configured to detect an operating voltage value of the semiconductor type carbon monoxide probe during heating, and the main controller is configured to determine whether the semiconductor type carbon monoxide probe is damaged or not according to the operating voltage value.
3. The semiconductor type carbon monoxide concentration monitoring device according to claim 1, wherein the semiconductor type carbon monoxide probe comprises a carbon monoxide sensor.
4. A semiconductor type carbon monoxide concentration monitoring device according to any one of claims 1 to 3, characterized in that the semiconductor type carbon monoxide concentration monitoring device further comprises a power supply circuit, the power supply circuit is respectively electrically connected with the temperature monitoring circuit, the main controller, the probe voltage dividing circuit and the semiconductor type carbon monoxide probe, and the power supply circuit is used for respectively providing power supply for the temperature monitoring circuit, the main controller, the probe voltage dividing circuit and the semiconductor type carbon monoxide probe.
5. A semiconductor type carbon monoxide concentration monitoring device as claimed in any one of claims 1 to 3, characterized in that the semiconductor type carbon monoxide concentration monitoring device further comprises an output interface, the output interface is connected with the main controller in communication, and the output interface is used for outputting the current concentration value of the carbon monoxide gas calculated by the main controller.
6. The semiconductor type carbon monoxide concentration monitoring device according to claim 1, wherein the temperature monitoring circuit includes a thermistor or a temperature sensor.
7. The semiconductor type carbon monoxide concentration monitoring device according to claim 1, wherein the main controller comprises a single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022604587.0U CN213715109U (en) | 2020-11-11 | 2020-11-11 | Semiconductor type carbon monoxide concentration monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022604587.0U CN213715109U (en) | 2020-11-11 | 2020-11-11 | Semiconductor type carbon monoxide concentration monitoring device |
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| Publication Number | Publication Date |
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| CN213715109U true CN213715109U (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022604587.0U Active CN213715109U (en) | 2020-11-11 | 2020-11-11 | Semiconductor type carbon monoxide concentration monitoring device |
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