CN215599101U - Batch calibration detection device for gas detection devices - Google Patents
Batch calibration detection device for gas detection devices Download PDFInfo
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- CN215599101U CN215599101U CN202120188251.2U CN202120188251U CN215599101U CN 215599101 U CN215599101 U CN 215599101U CN 202120188251 U CN202120188251 U CN 202120188251U CN 215599101 U CN215599101 U CN 215599101U
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Abstract
The utility model relates to a batch calibration detection device of a gas detection device, which comprises a plurality of gas cylinders, electromagnetic valves, a vacuum box, a calibration detection circuit, a vacuum pump, a control panel and a waste gas collection device, wherein the gas cylinders are communicated with the vacuum box through a pipeline on which the electromagnetic valves are arranged, the vacuum box is communicated with the vacuum pump through a pipeline, the vacuum pump is communicated with the waste gas collection device, the calibration detection circuit is arranged in the vacuum box, a batch to-be-detected detection device and an environment detection assembly are respectively connected with the inside of the vacuum box and are electrically connected with the calibration detection circuit, the calibration detection circuit is electrically connected with the control panel, and the control panel is respectively electrically connected with the electromagnetic valves and the vacuum pump. The gas detection device calibration device can be used for carrying out batch calibration detection on gas detection devices to be detected, simultaneously detecting environmental parameters in the vacuum box in real time, greatly improving calibration efficiency, enabling calibration detection results to be visually displayed through the control panel, being convenient to operate, simple in structure, easy to maintain and low in cost, and being suitable for large-area popularization and use.
Description
Technical Field
The utility model relates to the technical field of calibration detection of electronic elements, in particular to a batch calibration detection device of gas detection devices.
Background
A gas detector (sensor) is a transducer that converts a volume fraction of a certain gas into a corresponding electrical signal, which is used to detect the content of a certain gas component in the air. Compared with an air quality detection instrument adopting a traditional analysis method, the gas sensor has the advantages of high response speed, low cost, miniaturized volume and the like, and has great development potential in gas concentration monitoring application which urgently needs high-density distribution. However, due to the limitation of gas-sensitive materials and the high uncertainty of the processing technology of the miniaturized sensor in the production process, the gas sensor generally has the defects of cross interference among gases, low accuracy, poor consistency and the like. Therefore, the gas sensor needs to be calibrated and detected before being shipped out of a factory so as to ensure that the function and the precision of the gas sensor meet the requirements. Most of the existing detector calibration devices can not carry out batch calibration detection, the efficiency is low, the whole set of calibration detection equipment is high in cost, and large-area popularization and application are difficult.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a batch calibration detection device of gas detection devices aiming at the defects of the prior art.
The technical scheme for solving the technical problems is as follows: a batch calibration detection device for gas detection devices comprises a plurality of gas cylinders filled with standard gas, an electromagnetic valve, a vacuum box capable of heating the inner space of the gas cylinders, a calibration detection circuit, a vacuum pump, a control panel and a waste gas collecting device, wherein the gas cylinders are communicated with a gas inlet corresponding to the electromagnetic valve through a pipeline, a gas outlet of the electromagnetic valve is respectively communicated with a gas inlet of the vacuum box, a gas outlet of the vacuum box is communicated with a gas inlet of the vacuum pump through a pipeline, a gas outlet of the vacuum pump is communicated with a gas inlet of the waste gas collecting device, the calibration detection circuit is arranged in the vacuum box, a batch detection device to be detected and an environment detection component are respectively connected with the vacuum box and the calibration detection circuit, the calibration detection circuit is electrically connected with the control panel, and the control panel is respectively electrically connected with the electromagnetic valve and the vacuum pump, the control panel is electrically connected with the upper computer.
The utility model has the beneficial effects that: according to the batch calibration detection device for the gas detection devices, the electromagnetic valve is controlled by the control panel to charge the standard gas in the gas cylinder into the vacuum box, and the vacuum box heats the standard gas at the same time, so that the calibration detection circuit can perform batch calibration detection on the gas detection devices to be detected, and the environment detection component detects the environment parameters in the vacuum box in real time, so that the calibration efficiency is greatly improved, the calibration detection result can be visually displayed through the control panel, the operation is convenient, the whole device is simple in structure, easy to maintain and low in cost, and the device is suitable for large-area popularization and use.
On the basis of the technical scheme, the utility model can be further improved as follows:
further: the vacuum box is internally provided with a placing area for placing detection devices to be detected, the placing area comprises a plurality of layers of placing plates, each layer of placing plates is provided with a PCB, the calibration detection circuit and the environment detection assembly are respectively arranged on the PCB, the environment detection assembly is electrically connected with the calibration detection circuit, and the detection devices to be detected are inserted on the PCB in batches and are electrically connected with the calibration detection circuit.
The beneficial effects of the further scheme are as follows: the plates are placed through the multiple layers, so that the batched detection devices to be detected can be placed in a layered mode, the plates can be conveniently placed before and after calibration and detection, the plates are taken out of the vacuum box, the detection devices to be detected can be conveniently taken out and placed, operation is convenient, and efficiency is high.
Further: the calibration detection circuit comprises a multi-way switch selection circuit, a main control circuit and a power supply circuit, when the batch of detection devices to be detected are inserted on the PCB, the batch of detection devices to be detected are electrically connected with the input end of the multi-way switch selection circuit, the output end of the multi-way switch selection circuit is electrically connected with the signal input end of the main control circuit, the environment detection assembly is electrically connected with the signal output end of the main control circuit, and the signal output end of the main control circuit is electrically connected with the control panel.
The beneficial effects of the further scheme are as follows: through the switch selection circuit can make the gaseous detecting device that awaits measuring in batches can in proper order respectively with carry out data transmission between the main control circuit to can conveniently handle the inductive signal of gaseous detecting device that awaits measuring in batches, and then the accurate demarcation testing result who judges gaseous detecting device in batches, and pass through control panel shows.
Further: the calibration detection circuit further comprises an indicating circuit used for indicating the insertion state of the detection device to be detected, the indicating circuit is arranged at the insertion position of the detection device to be detected corresponding to the PCB, and the indicating circuit is electrically connected with the main control circuit.
The beneficial effects of the further scheme are as follows: through setting up indicating circuit can conveniently indicate the detecting device state of inserting that awaits measuring, and the convenience is getting operation standard when putting the gaseous detecting device that awaits measuring, avoids because the detecting device that awaits measuring pegs graft improper and causes and mark the testing result mistake, when improving the simple operation nature, improves and marks the accuracy of testing result.
Further: the multi-way switch selection circuit adopts a multi-way analog multiplexing chip with the model number of 74HC4067, and the main control circuit adopts an STM32 series microprocessor.
Further: the environment detection assembly comprises an air pressure sensor and a temperature sensor, and the air pressure sensor and the temperature sensor are respectively electrically connected with the signal input end of the main control circuit.
The beneficial effects of the further scheme are as follows: the air pressure and the temperature in the vacuum box can be detected in real time through the air pressure sensor and the temperature sensor, so that the control panel controls the air pressure and the temperature in the vacuum box to reach a calibration detection condition by controlling the heating part and the electromagnetic valve of the vacuum box, and the accuracy of calibration detection is improved.
Further: the control panel comprises a display screen, keys and a microprocessor, the display screen and the keys are respectively embedded on the surface of the vacuum box, the display screen and the keys are respectively electrically connected with the microprocessor, and the microprocessor is respectively electrically connected with the electromagnetic valve, the calibration detection circuit, the vacuum pump and the upper computer.
The beneficial effects of the further scheme are as follows: the microprocessor can control the working states of the electromagnetic valve and the vacuum pump, calculate the calibration detection result according to the signal output by the calibration detection circuit, display the calibration detection result through the control panel and send the calibration detection result to the upper computer.
Drawings
FIG. 1 is a schematic circuit diagram of a batch calibration detection apparatus for gas detection devices in accordance with the present invention;
fig. 2 is a schematic structural diagram of a batch calibration detection apparatus of a gas detection device according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. gas cylinder, 2, solenoid valve, 3, vacuum chamber, 4, mark detection circuitry, 5, vacuum pump, 6, control panel, 7, exhaust gas collection device, 8, place the board, 9, PCB board.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
As shown in figure 1, a batch calibration detection device of a gas detection device comprises a plurality of gas cylinders 1 filled with standard gas, an electromagnetic valve 2, a vacuum box 3 capable of heating the inner space of the vacuum box, a calibration detection circuit 4, a vacuum pump 5, a control panel 6 and a waste gas collection device 7, wherein the plurality of gas cylinders 1 are communicated with a corresponding gas inlet of the electromagnetic valve 2 through pipelines, a gas outlet of the electromagnetic valve 2 is respectively communicated with a gas inlet of the vacuum box 3, a gas outlet of the vacuum box 3 is communicated with a gas inlet of the vacuum pump 5 through a pipeline, a gas outlet of the vacuum pump 5 is communicated with a gas inlet of the waste gas collection device 7, the calibration detection circuit 4 is arranged in the vacuum box 3, a batch detection device to be detected and an environment detection component are respectively connected with the inside of the vacuum box 3 and are electrically connected with the calibration detection circuit 4, the calibration detection circuit 4 is electrically connected with the control panel 6, the control panel 6 is respectively electrically connected with the electromagnetic valve 2 and the vacuum pump 5, and the control panel 6 is electrically connected with an upper computer.
According to the batch calibration detection device for the gas detection devices, the electromagnetic valve 2 is controlled through the control panel 6 to fill the standard gas in the gas cylinder 1 into the vacuum box 3, the vacuum box 3 heats the standard gas at the same time, so that the calibration detection circuit 4 can perform batch calibration detection on the gas detection devices to be detected, and meanwhile, the environment detection component detects the environment parameters in the vacuum box 3 in real time, so that the calibration efficiency is greatly improved, the calibration detection result can be visually displayed through the control panel 6, the operation is convenient, the whole device is simple in structure, easy to maintain and low in cost, and the device is suitable for large-area popularization and use.
As shown in fig. 2, in one or more embodiments of the present invention, a placement area for placing a probe device to be tested is disposed in the vacuum box 3, the placement area includes a plurality of layers of placement plates 8, a PCB9 is disposed on each layer of placement plate 8, the calibration detection circuit 4 and the environment detection component are respectively disposed on the PCB9, the environment detection component is electrically connected to the calibration detection circuit 4, and a batch of probe devices to be tested is plugged on the PCB9 and electrically connected to the calibration detection circuit 4. Place board 8 through setting up the multilayer, can place batched detecting device that awaits measuring like this in the layering to can conveniently through will before demarcating and detect place board 8 follow take out in the vacuum chamber 3, with convenient getting of detecting device that awaits measuring and put convenient operation, it is efficient.
In the embodiment of the utility model, the vacuum box 3 is internally provided with the aviation plug, so that the internal circuit can conveniently perform information interaction with the external control panel 6 in a vacuum environment.
In one or more embodiments of the present invention, the calibration detection circuit 4 includes a multi-way switch selection circuit, a main control circuit and a power circuit, when the batch of detection devices to be tested are plugged on the PCB, the batch of detection devices to be tested are electrically connected to an input terminal of the multi-way switch selection circuit, an output terminal of the multi-way switch selection circuit is electrically connected to a signal input terminal of the main control circuit, the environment detection component is electrically connected to a signal output terminal of the main control circuit, and a signal output terminal of the main control circuit is electrically connected to the control panel 6. Through switch selection circuit can make in batches the detecting device that awaits measuring can in proper order respectively with carry out data transmission between the main control circuit to can conveniently handle the inductive signal of gaseous detecting device that awaits measuring in batches, and then the accurate demarcation testing result who judges gaseous detecting device in batches, and pass through control panel 6 shows.
Optionally, in one or more embodiments of the present invention, the calibration detection circuit 4 further includes an indication circuit for indicating an insertion state of the probe device to be tested, the indication circuit is disposed at a plugging position of the corresponding probe device to be tested on the PCB, and the indication circuit is electrically connected to the main control circuit. Through setting up indicating circuit can conveniently indicate the detecting device state of inserting that awaits measuring, and the convenience is getting operation standard when putting the gaseous detecting device that awaits measuring, avoids because the detecting device that awaits measuring pegs graft improper and causes and mark the testing result mistake, when improving the simple operation nature, improves and marks the accuracy of testing result.
In order to adapt to calibration detection of batch gas detection devices to be detected in different scales, in the embodiment of the utility model, the calibration detection circuit 4 further comprises one or more expansion auxiliary boards, the expansion auxiliary boards are electrically connected with the main control circuit through slots, and each auxiliary board is matched with a corresponding multi-way switch selection circuit, so that the number of the gas detection devices to be detected in batch calibration detection at each time can be conveniently expanded.
In the embodiment of the utility model, the indicating circuit not only comprises an indicating lamp for indicating and confirming the insertion state of the detecting device to be detected, but also comprises an indicating lamp for indicating that the preheating of the gas detecting device to be detected is completed, an indicating lamp for indicating that the function of the gas detecting device is qualified after the calibration detection is completed, an indicating lamp for indicating that the analog output of the gas detecting device is inconsistent after the calibration detection is completed, an indicating lamp for indicating that the digital serial port output of the gas detecting device has a fault after the calibration detection is completed, and the like, wherein each indicating lamp for indicating different functions or states can be distinguished by different colors.
Optionally, in one or more embodiments of the utility model, the multiplexer selection circuit is a multiplexer chip model 74HC4067, and the main control circuit is an STM32 family microprocessor.
In one or more embodiments of the utility model, the environment detection assembly includes an air pressure sensor and a temperature sensor, which are electrically connected to the signal input terminal of the main control circuit, respectively. The air pressure and the temperature in the vacuum box 3 can be detected in real time through the air pressure sensor and the temperature sensor, so that the control panel 6 controls the air pressure and the temperature in the vacuum box 3 to reach the calibration detection condition by controlling the heating part and the electromagnetic valve 2 of the vacuum box 3, and the calibration detection accuracy is improved.
In one or more embodiments of the present invention, the control panel 6 includes a display screen, a key and a microprocessor, the display screen and the key are respectively embedded on the surface of the vacuum box 3, the display screen and the key are respectively electrically connected to the microprocessor, and the microprocessor is respectively electrically connected to the electromagnetic valve 2, the calibration detection circuit 4, the vacuum pump 5 and the upper computer. The microprocessor can control the working states of the electromagnetic valve 2 and the vacuum pump 5, calculate a calibration detection result according to a signal output by the calibration detection circuit 4, display the calibration detection result through the control panel 6 and send the calibration detection result to an upper computer. It is prior art to calculate the concentration value of the corresponding standard gas according to the detection signal of the gas to be detected, and the detailed description is omitted in the present invention, and this is not within the protection scope of the present invention.
The utility model discloses a batch calibration detection device of gas detection devices, which comprises the following working procedures:
a worker takes out the placing area calibration placing plate, all lamps of the indicating circuit are on at the moment, the gas detecting device to be detected is inserted into the corresponding position on the hole site, and after the corresponding gas detecting device to be detected is placed, all lamps of the indicating circuit corresponding to the gas detecting device to be detected are turned off; after the worker confirms that all the gas detection devices to be detected are placed, namely all the lamps of the indicating circuit are extinguished, the vacuum box 3 is put back, the box door is closed, the worker firstly presses a vacuumizing button on the control panel 6, the vacuum pump 6 is started at the moment, air in the vacuum box 3 is exhausted, a green lamp on the control panel 6 of the box body of the vacuum box 3 is lightened at the moment, the system is prompted to run normally, and the air pressure, the gas components and the concentration in the current box are displayed above the LCD screen; the staff selects the corresponding gas and sets the concentration requirement according to the calibration test requirement; when the air pressure in the box reaches the vacuum standard, the electromagnetic valve 2 of the air inlet channel is opened through the control panel 6, corresponding standard gas is introduced, meanwhile, a gas detection device to be detected is preheated, after the gas in the box reaches the concentration required by calibration inspection and the gas detection device to be detected is preheated, the LCD screen displays that preheating is completed, the start detection button is pressed, after detection is completed, the screen displays the calibration inspection result, abnormal conditions can be checked through the key, after a worker presses the emptying key, the control panel 6 controls the vacuum pump 5 to start, residual gas in the vacuum box 3 is pumped away, after extraction is completed, the electromagnetic valve 2 is opened to fill in external air, after completion, the LCD display air is filled completely, and the placement area can be taken out. On the PCB board 9 of the placement area, the red light lights up before the sample that the analog output has trouble, and the blue light lights up before the sample that digital serial port output has a problem, takes out the unqualified sample according to the suggestion and places by classification. The control panel 6 can also be connected to an upper computer (such as a computer) through a data line, the operations are carried out on computer software, and the final result is saved as a txt file for archiving.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a detection device is markd in batches of gas detection device which characterized in that: the gas detection device comprises a plurality of gas cylinders (1) filled with standard gas, an electromagnetic valve (2), a vacuum box (3) capable of heating the inner space of the gas cylinders, a calibration detection circuit (4), a vacuum pump (5), a control panel (6) and a waste gas collecting device (7), wherein the plurality of gas cylinders (1) are communicated with a gas inlet corresponding to the electromagnetic valve (2) through a pipeline, a gas outlet of the electromagnetic valve (2) is respectively communicated with a gas inlet of the vacuum box (3), a gas outlet of the vacuum box (3) is communicated with a gas inlet of the vacuum pump (5) through a pipeline, a gas outlet of the vacuum pump (5) is communicated with a gas inlet of the waste gas collecting device (7), the calibration detection circuit (4) is arranged in the vacuum box (3), a batch detection device and an environment detection assembly are respectively communicated with the vacuum box (3) and are electrically connected with the calibration detection circuit (4), the calibration detection circuit (4) is electrically connected with the control panel (6), the control panel (6) is electrically connected with the electromagnetic valve (2) and the vacuum pump (5) respectively, and the control panel (6) is electrically connected with an upper computer.
2. The batch calibration detecting apparatus of gas detecting devices according to claim 1, wherein: the vacuum box (3) is internally provided with a placing area for placing detection devices to be detected, the placing area comprises a plurality of layers of placing plates (8), each layer of placing plates is provided with a PCB (9), the calibration detection circuit (4) and the environment detection component are respectively arranged on the PCB (9), the environment detection component is electrically connected with the calibration detection circuit (4), and the detection devices to be detected are inserted on the PCB (9) in batches and are electrically connected with the calibration detection circuit (4).
3. The batch calibration detecting apparatus of the gas detecting device according to claim 2, wherein: the calibration detection circuit (4) comprises a multi-way switch selection circuit, a main control circuit and a power supply circuit, when the detection devices to be detected are inserted on the PCB in batches, the detection devices to be detected in batches are electrically connected with the input end of the multi-way switch selection circuit, the output end of the multi-way switch selection circuit is electrically connected with the signal input end of the main control circuit, the environment detection assembly is electrically connected with the signal output end of the main control circuit, and the signal output end of the main control circuit is electrically connected with the control panel (6).
4. The batch calibration detecting apparatus of the gas detecting device according to claim 3, wherein: the calibration detection circuit (4) further comprises an indicating circuit used for indicating the insertion state of the detection device to be detected, the indicating circuit is arranged at the corresponding insertion position of the detection device to be detected on the PCB, and the indicating circuit is electrically connected with the main control circuit.
5. The batch calibration detecting apparatus of the gas detecting device according to claim 3, wherein: the multi-way switch selection circuit adopts a multi-way analog multiplexing chip with the model number of 74HC4067, and the main control circuit adopts an STM32 series microprocessor.
6. The batch calibration detecting apparatus of the gas detecting device according to claim 3, wherein: the environment detection assembly comprises an air pressure sensor and a temperature sensor, and the air pressure sensor and the temperature sensor are respectively electrically connected with the signal input end of the main control circuit.
7. The batch calibration detecting apparatus of the gas detecting device according to any one of claims 1 to 6, wherein: the control panel (6) comprises a display screen, keys and a microprocessor, wherein the display screen and the keys are respectively embedded on the surface of the vacuum box (3), the display screen and the keys are respectively electrically connected with the microprocessor, and the microprocessor is respectively electrically connected with the electromagnetic valve (2), the calibration detection circuit (4), the vacuum pump (5) and an upper computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120188251.2U CN215599101U (en) | 2021-01-22 | 2021-01-22 | Batch calibration detection device for gas detection devices |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120188251.2U CN215599101U (en) | 2021-01-22 | 2021-01-22 | Batch calibration detection device for gas detection devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115728288A (en) * | 2022-11-21 | 2023-03-03 | 楚能新能源股份有限公司 | Detection system and detection method of composite detector |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115728288A (en) * | 2022-11-21 | 2023-03-03 | 楚能新能源股份有限公司 | Detection system and detection method of composite detector |
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