CN202974941U - Automatic carbon monoxide sensor zero setting device and system - Google Patents

Automatic carbon monoxide sensor zero setting device and system Download PDF

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Publication number
CN202974941U
CN202974941U CN 201220709070 CN201220709070U CN202974941U CN 202974941 U CN202974941 U CN 202974941U CN 201220709070 CN201220709070 CN 201220709070 CN 201220709070 U CN201220709070 U CN 201220709070U CN 202974941 U CN202974941 U CN 202974941U
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China
Prior art keywords
voltage
short circuit
carbon monoxide
actual short
sensing unit
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Expired - Fee Related
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CN 201220709070
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Chinese (zh)
Inventor
陶德保
裔传奇
陈俊
朱峰
任启洪
曹军
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JIANGSU SHINE TECHNOLOGY Co Ltd
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JIANGSU SHINE TECHNOLOGY Co Ltd
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Abstract

The utility model discloses an automatic carbon monoxide sensor zero setting device and system. The device comprises a sensing unit, a control unit, a processing unit and an adjusting unit, wherein the sensing unit is used for converting the concentration of carbon monoxide into a current signal which is proportional to the concentration; the control unit is used for c hanging the wiring mode of the sensing unit, so that the sensing unit generates actual short-circuit voltage; the processing unit is used for receiving a current signal output by the sensing unit, judging whether the reference voltage and the actual short-circuit voltage are consistent and calculating the difference between the reference voltage and the actual short-circuit voltage; and the adjusting unit is used for compensating the difference between the reference voltage and the actual short-circuit voltage to the zero point. According to the automatic carbon monoxide sensor zero setting device and system, the carbon monoxide is automatically set to be zero, the time and manual labor are saved, and the load of a worker is reduced.

Description

Carbon monoxide transducer Automatic Zero Set and system
Technical field
The utility model relates to Carbon Monoxide Detection field, colliery, particularly a kind of carbon monoxide transducer Automatic Zero Set and system.
Background technology
In coal mine, carbon monoxide reaches certain concentration, easily sets off an explosion, and causes security incident, so will often detect the content of carbon monoxide in coal mine.The existing content that detects carbon monoxide in mine mainly adopts sensor.
The principle of work of sensor itself is when having gas to exist, and in sensor, sensing element is followed the proportional electric current of gas concentration to one of γ-ray emission chemical reaction output, determines the concentration of current carbon monoxide by the magnitude of voltage that detects electric current.But due to the impact of external environment condition, after sensor works long hours, can cause sensor there is no also to produce a small electric current under the environment of gas, drifted about the zero point of sensor, make detection inaccurate.At present, the zeroing of sensor is all the manual adjustment of regularly carrying out by telepilot, so not only loses time, but also has wasted manpower.
This shows, the zeroing of above-mentioned existing sensor obviously still has inconvenience and defective, and demands urgently further being improved in the use.The problem that exists for the zeroing that solves sensor, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but have no for a long time applicable design is completed by development always, and common product does not have appropriate structure to address the above problem, and this is obviously the problem that the anxious wish of relevant dealer solves.
The utility model content
Fundamental purpose of the present utility model is, overcome the defective of the zeroing existence of existing sensor, and provide a kind of carbon monoxide transducer Automatic Zero Set and system, technical matters to be solved is to realize the automatic zero set (AZS) of carbon monoxide, save time, save manpower, reduced worker's burden, thereby more be suitable for practicality, and have the value on industry.
A kind of method of carbon monoxide transducer automatic zero set (AZS), the method comprises the following steps:
Step a: gather reference voltage value;
Step b: change the mode of connection of sensing element, gather actual short circuit magnitude of voltage;
Step c: judge whether described reference voltage value is consistent with described actual short circuit magnitude of voltage, if inconsistent carry out steps d;
Steps d: calculate the difference of described reference voltage value and described actual short circuit magnitude of voltage, described difference was compensated to zero point.
Preferably, in step b, also comprise a step that described actual short circuit magnitude of voltage is carried out temperature compensation after the actual short circuit magnitude of voltage of described collection.
Preferably, also comprise later on a step that shows zero point in steps d.
Preferably, in step b, the mode of connection of described change sensing element is carried out at set intervals, and the described time is set according to actual needs.
Preferably, described reference voltage value is the magnitude of voltage that gathers when changing the sensor element mode of connection first.
Preferably, described reference voltage value is the actual short circuit magnitude of voltage that gathers when last time of the actual short circuit magnitude of voltage of collection changing the sensing element mode of connection.
The utility model also provides a kind of device of carbon monoxide transducer automatic zero set (AZS), and this device comprises:
Sensing unit is used for the concentration of carbon monoxide is converted to and the proportional current signal of described concentration;
Control module for the mode of connection that changes described sensing unit, makes described sensing unit produce actual short circuit voltage;
Processing unit is used for receiving the current signal of sensing unit output, and judges whether described reference voltage is consistent with described actual short circuit voltage, calculates the difference between described reference voltage and described actual short circuit voltage;
Adjustment unit is used for the difference between described reference voltage and described actual short circuit voltage was compensated to zero point.
Preferably, this device also comprises a timing unit, is used for setting the time interval that described control module changes the mode of connection of described sensing unit.
Preferably, this device also comprises a temperature compensation unit, for the compensation of described actual short circuit voltage being carried out under different temperatures.
The utility model also provides a kind of carbon monoxide transducer automatic zero set (AZS) system, and this system comprises: single-chip microcomputer, electronic switch, sensing element, detection output circuit and compensating element;
Described electronic switch for the mode of connection that changes described sensing unit, makes described sensing unit produce actual short circuit voltage;
Described single-chip microcomputer is used for controlling the mode of connection that described electronic switch changes sensor;
Described sensing element is used for the concentration of carbon monoxide is converted to and the proportional current signal of described concentration;
Described detection output circuit is used for receiving the current signal of sensing unit output, and judges whether described reference voltage value is consistent with described actual short circuit magnitude of voltage, calculates the difference between described reference voltage value and described actual short circuit magnitude of voltage;
Described compensating element, is used for the difference between described reference voltage and described actual short circuit voltage was compensated to zero point.
A kind of carbon monoxide transducer automatic zero-setting method provided by the utility model compared with prior art, the utility model has been realized the automatic zero set (AZS) of carbon monoxide, saves time, and saves manpower, has reduced worker's burden.
in sum, carbon monoxide transducer automatic zero-setting method of the present utility model, Apparatus and system, it has above-mentioned many advantages and practical value, and publish or use and really genus innovation there are no similar structural design in like product, no matter it structurally or larger improvement all arranged on function, have large improvement technically, and produced handy and practical effect, and the zeroing of more existing sensor has the multinomial effect of enhancement, thereby more be suitable for practicality, and has the extensive value of industry, it is really a novelty, progressive, practical new design.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of instructions, below with preferred embodiment of the present utility model and coordinate accompanying drawing to be described in detail as follows.
Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the utility model carbon monoxide transducer automatic zero-setting method process flow diagram;
Fig. 2 is a kind of embodiment process flow diagram of the utility model carbon monoxide transducer automatic zero-setting method;
Fig. 3 is a kind of embodiment process flow diagram of the utility model carbon monoxide transducer automatic zero-setting method;
Fig. 4 is the utility model carbon monoxide transducer Automatic Zero Set;
Fig. 5 is the utility model carbon monoxide transducer automatic zero set (AZS) system;
Fig. 6 is the utility model carbon monoxide transducer zero-detection circuit.
Embodiment
Be to reach technological means and the effect that predetermined utility model purpose is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, to according to carbon monoxide transducer automatic zero-setting method, its embodiment of Apparatus and system, structure, feature and the effect thereof that the utility model proposes, be described in detail as follows.
Embodiment one: referring to Fig. 1 and Fig. 6, the flow process of the method for a kind of carbon monoxide transducer automatic zero set (AZS) of the utility model is:
Step 101 gathers reference voltage value; When with the R in the sensor sensing element, when the S level is shorted together, chemical reaction does not just occur in sensing element, but have a specific magnitude of voltage at the OUT end, do not having under the environment of CO gas, the output voltage of the OUT of sensor end also remains unchanged.Therefore, use originally at sensor, the R in the sensor sensing element, S level are shorted together the magnitude of voltage that obtains the output of sensor OUT end, take this magnitude of voltage as reference voltage value.
Step 102 gathers actual short circuit magnitude of voltage; In practical work process, change the mode of connection of sensor sensing element, the R, the S level that are about in the sensor sensing element are shorted together, at this moment, at actual short circuit magnitude of voltage of the OUT of sensor end output.
Step 103, whether the judgment standard magnitude of voltage is consistent with actual short circuit magnitude of voltage, and said unanimously referring to equates here, if equate, illustrates that zero point drift does not appear in sensor, only needs this moment to show to get final product zero point; If reference voltage value and actual short circuit magnitude of voltage are inconsistent, illustrate that zero point drift appears in sensor, need to take measures to process this moment.
Step 104, then the difference of calculating reference voltage value and actual short circuit magnitude of voltage compensates difference to zero point.After difference compensates zero point, show zero point, so just completed the automatic zero set (AZS) of sensor.
The method of carbon monoxide transducer automatic zero set (AZS) provided by the utility model need not return to zero manually, has saved manpower and time, has reduced staff's work load.
Embodiment two, see also Fig. 2 and Fig. 6, and the another kind of embodiment flow process of the method for a kind of carbon monoxide transducer automatic zero set (AZS) of the utility model is:
Step 201 gathers reference voltage value; When with the R in the sensor sensing element, when the S level is shorted together, chemical reaction does not just occur in sensing element, but have a specific magnitude of voltage at the OUT end, even that is to say is not having under the environment of CO gas, the output voltage of the OUT of sensor end also remains unchanged.Therefore, use originally at sensor, the R in the sensor sensing element, S level are shorted together the magnitude of voltage that obtains the output of sensor OUT end, take this magnitude of voltage as reference voltage value.
Step 202 gathers actual short circuit magnitude of voltage; In practical work process, change the mode of connection of sensor sensing element, the R, the S level that are about in the sensor sensing element are shorted together, at this moment, at actual short circuit magnitude of voltage of the OUT of sensor end output.
Step 203, the actual short circuit magnitude of voltage of temperature compensation; Due in real work, sensor is subjected to the impact of temperature larger, therefore, in with actual short circuit magnitude of voltage and reference voltage value comparison, need to carry out temperature compensation to the actual short circuit magnitude of voltage that gathers, this temperature is when gathering actual short circuit magnitude of voltage, the temperature of sensor environment of living in.
Step 204, whether the judgment standard magnitude of voltage is consistent with actual short circuit magnitude of voltage, and said unanimously referring to equates here, if equate, illustrates that zero point drift does not appear in sensor, only needs this moment to show to get final product zero point; If reference voltage value and actual short circuit magnitude of voltage are inconsistent, illustrate that zero point drift appears in sensor, need to take measures to process this moment.
Step 205, then the difference of calculating reference voltage value and actual short circuit magnitude of voltage compensates difference to zero point.
Step 206 after difference compensates zero point, shows zero point, has so just completed the automatic zero set (AZS) of sensor.
Embodiment three, see also Fig. 3 and Fig. 6, and the flow process of the another kind of embodiment of the method for a kind of carbon monoxide transducer automatic zero set (AZS) that the utility model provides is:
Step 301 gathers reference voltage value; The short circuit magnitude of voltage that the reference voltage value that herein gathers is exported for the last mode of connection OUT end that changes the sensor sensing element, suppose to be this time the actual short circuit magnitude of voltage of the n+1 time collection, so this time said voltage reference value is the actual short circuit magnitude of voltage of the n time collection.
Step 302 gathers actual short circuit magnitude of voltage; In practical work process, change the mode of connection of sensor sensing element, the R, the S level that are about in the sensor sensing element are shorted together, at this moment, at actual short circuit magnitude of voltage of the OUT of sensor end output, this value is the n+1 time actual short circuit magnitude of voltage that gathers.
Step 303, the n+1 time actual short circuit magnitude of voltage of temperature compensation; Should actual short circuit magnitude of voltage and reference voltage value relatively in, the actual short circuit magnitude of voltage that gathers is carried out temperature compensation, this temperature when gathering actual short circuit magnitude of voltage, the temperature of sensor environment of living in.
Whether step 304, judgment standard magnitude of voltage equate with the n+1 time actual short circuit magnitude of voltage, if equate, illustrate that zero point drift does not appear in sensor, only need this moment to show to get final product zero point; If reference voltage value and the n time actual short circuit magnitude of voltage are inconsistent, illustrate that zero point drift appears in sensor.
Step 305 is calculated the i.e. difference between the n time actual short circuit magnitude of voltage and the n+1 time actual short circuit magnitude of voltage of reference voltage value, then difference is compensated to zero point.
Step 306 after difference compensates zero point, shows zero point.
See also Fig. 4, the utility model also provides a kind of device of carbon monoxide transducer automatic zero set (AZS), and this device comprises:
Sensing unit 401 is used for the concentration of carbon monoxide is converted to and the proportional current signal of described concentration;
Control module 402 for the mode of connection that changes described sensing unit, makes described sensing unit produce actual short circuit voltage;
Processing unit 403 is used for receiving the current signal of sensing unit output, and judges whether described reference voltage is consistent with described actual short circuit voltage, calculates the difference between described reference voltage and described actual short circuit voltage;
Adjustment unit 404 is used for the difference between described reference voltage and described actual short circuit voltage was compensated to zero point.
Timing unit 405 is used for setting the time interval that described control module changes the mode of connection of described sensing unit.
Temperature compensation unit 406 is for the compensation of described actual short circuit voltage being carried out under different temperatures.
See also Fig. 5, the utility model also provides a kind of carbon monoxide transducer automatic zero set (AZS) system, and this system comprises:
Electronic switch 502 for the mode of connection that changes described sensing unit, makes described sensing unit produce actual short circuit voltage;
Single-chip microcomputer 501 is used for controlling the mode of connection that described electronic switch changes sensor;
Sensing element 503 is used for the concentration of carbon monoxide is converted to and the proportional current signal of described concentration;
Detect output circuit 504, be used for receiving the current signal of sensing unit output, and judge whether described reference voltage value is consistent with described actual short circuit magnitude of voltage, calculate the difference between described reference voltage value and described actual short circuit magnitude of voltage;
Compensating element, 505 is used for the difference between described reference voltage and described actual short circuit voltage was compensated to zero point.
The utility model carbon monoxide transducer automatic zero-setting method that above-mentioned structure like this consists of, the technological innovation of Apparatus and system all have many saving graces for technician of the same trade now, and the progressive that really possesses skills.
the above, it is only preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.

Claims (4)

1. the carbon monoxide transducer Automatic Zero Set, is characterized in that, this device comprises:
Sensing unit is used for the concentration of carbon monoxide is converted to and the proportional current signal of described concentration;
Control module for the mode of connection that changes described sensing unit, makes described sensing unit produce actual short circuit voltage;
Processing unit be used for receiving the current signal that sensing unit is exported, and whether judgment standard voltage is consistent with described actual short circuit voltage, calculates the difference between described reference voltage and described actual short circuit voltage;
Adjustment unit is used for the difference between described reference voltage and described actual short circuit voltage was compensated to zero point.
2. carbon monoxide transducer Automatic Zero Set according to claim 1, is characterized in that, also comprises a timing unit, is used for setting the time interval that described control module changes the mode of connection of described sensing unit.
3. carbon monoxide transducer Automatic Zero Set according to claim 1, is characterized in that, also comprises a temperature compensation unit, for the compensation of described actual short circuit voltage being carried out under different temperatures.
4. carbon monoxide transducer automatic zero set (AZS) system, is characterized in that, this system comprises: single-chip microcomputer, electronic switch, sensing element, detection output circuit and compensating element;
Described electronic switch for the mode of connection that changes described sensing unit, makes described sensing unit produce actual short circuit voltage;
Described single-chip microcomputer is used for controlling the mode of connection that described electronic switch changes sensor;
Described sensing element is used for the concentration of carbon monoxide is converted to and the proportional current signal of described concentration;
Described detection output circuit is used for receiving the current signal of sensing unit output, and judges whether described reference voltage value is consistent with described actual short circuit magnitude of voltage, calculates the difference between described reference voltage value and described actual short circuit magnitude of voltage;
Described compensating element, is used for the difference between described reference voltage and described actual short circuit voltage was compensated to zero point.
CN 201220709070 2012-12-20 2012-12-20 Automatic carbon monoxide sensor zero setting device and system Expired - Fee Related CN202974941U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103105429A (en) * 2012-12-20 2013-05-15 江苏三恒科技股份有限公司 Automatic zero setting method, device and system of carbon monoxide sensor
CN117706182A (en) * 2023-06-01 2024-03-15 荣耀终端有限公司 Parameter adjustment method and electronic equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103105429A (en) * 2012-12-20 2013-05-15 江苏三恒科技股份有限公司 Automatic zero setting method, device and system of carbon monoxide sensor
CN103105429B (en) * 2012-12-20 2015-09-09 江苏三恒科技股份有限公司 The method of carbon monoxide transducer automatic zero set (AZS)
CN117706182A (en) * 2023-06-01 2024-03-15 荣耀终端有限公司 Parameter adjustment method and electronic equipment

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Granted publication date: 20130605

Termination date: 20161220