CN211783764U - Calibration device for magnetic turning plate liquid level sensor - Google Patents
Calibration device for magnetic turning plate liquid level sensor Download PDFInfo
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- CN211783764U CN211783764U CN202020602669.9U CN202020602669U CN211783764U CN 211783764 U CN211783764 U CN 211783764U CN 202020602669 U CN202020602669 U CN 202020602669U CN 211783764 U CN211783764 U CN 211783764U
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- liquid level
- level sensor
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- controller
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Abstract
The utility model provides a board level sensor calibration equipment is turned over to magnetism, turns over board level sensor output current with magnetism and transmits to the controller after the AD conversion, and the controller converts, calculates, shows the liquid level value that obtains, then compares with actual liquid level scale value, inspects board level sensor accuracy is turned over to magnetism, and whole process can be accomplished automatically, has improved the measuring rate of accuracy, and the device can change fast and await measuring level sensor, is fit for large batch sensor calibration.
Description
Technical Field
The utility model relates to a low-voltage apparatus and electronic information field, especially a board level sensor calibration equipment is turned over to magnetism.
Background
The magnetic turning plate liquid level meter can be used for medium liquid level detection of various towers, tanks, grooves, spherical containers, boilers and other equipment. The liquid level meter can achieve high sealing, leakage prevention and is suitable for high-temperature, high-pressure and corrosion-resistant occasions. The device makes up the defects of poor indication definition, easy breakage and the like of a glass plate (tube) liquid level meter, has no blind area in the whole process of measurement, and has clear display and large measurement range. At present, the check of the magnetic turning plate liquid level sensor is mainly performed through manual check, the magnetic turning plate liquid level sensor is installed on the outer side of a graduated liquid tank during check, the actual liquid level of the liquid tank is obtained through scales, then the output current of the magnetic turning plate liquid level sensor is measured and converted into the actual liquid level value, and then comparison is performed, and the whole check process is easy to generate measurement errors and low in efficiency.
Disclosure of Invention
The utility model aims to solve the technical problem that a board level sensor calibration equipment is turned over to magnetism is provided, turn over board level sensor output current with magnetism and transmit to the controller after the AD conversion, the controller converts the liquid level value that obtains, calculate, show, then contrast with actual liquid level scale interval, board level sensor accuracy is turned over in the inspection magnetism, the device inspection magnetism turns over the error that board level sensor can overcome artifical reading and produce, measurement accuracy is high, the measured value can show, and possess serial ports communication function, the application is very strong.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a calibration device of a magnetic turning plate liquid level sensor comprises a calibration device box body, wherein a liquid storage box is arranged in the calibration device box body, a standard liquid level measuring unit is fixedly arranged on the liquid storage box, the liquid storage box is detachably connected with the magnetic turning plate liquid level sensor, the magnetic turning plate liquid level sensor is electrically connected with a circuit board, an LCD display module is arranged on the calibration device box body, the LCD display module is electrically connected with the circuit board, the circuit board is electrically connected with an alternating current power supply socket outside the calibration device box body, a reset button SK on the calibration device box body is electrically connected with the circuit board, liquid with fixed volume is filled in the liquid storage tank, the standard liquid level measuring unit displays the current liquid level value, the magnetic turning plate liquid level sensor is connected to convert the analog quantity signal of the sensor into the current liquid level value and display the current liquid level value on the LCD display module, whether the range is exceeded or not is checked through comparison with a standard leaf liquid level value, and the device can be reset through a reset button SK during measurement.
The connection structure of the circuit board is as follows: the circuit board is provided with a controller, a liquid level signal switching value interface on the magnetic turning plate liquid level sensor is electrically connected with an input end of the controller, a digital value output end of the A/D conversion module is electrically connected with an input end of the controller, an analog value input end of the A/D conversion module is electrically connected with a liquid level signal analog value interface of the magnetic turning plate liquid level sensor, the LCD display module is electrically connected with an output end of the controller, an analog value signal of the magnetic turning plate liquid level sensor is converted into a corresponding numerical value through the A/D conversion module, the controller calculates the current measured liquid level value and outputs the current measured liquid level value to the LCD display module, the liquid level signal switching value interface is a liquid level value switch preset by the magnetic turning plate liquid level sensor, when the device is used for measuring, the lower limit of the error range of the display value on the standard liquid level measurement unit is preset, and whether the magnetic turning plate liquid level sensor is qualified or not can be judged through whether the controller receives a switching value signal or not.
The circuit board is provided with a direct current power supply module, the direct current power supply module is electrically connected with the A/D conversion module, the LCD display module and the controller, and the direct current power supply module provides low voltage required by the device.
The output end of the controller is also provided with a communication interface, and the detection result can be sent to an upper computer for recording through the communication interface, so that the process recording is conveniently carried out during enterprise production.
In a preferred embodiment, the standard liquid level measuring unit is a liquid level scale, and the preset switching value range can be adjusted through manual observation.
In the preferred scheme, the standard liquid level measuring unit is a standard liquid level sensor, a standard liquid level analog quantity interface of the standard liquid level sensor is electrically connected with an input end of an A/D conversion module, the standard liquid level sensor conveys the measured standard liquid level to a controller through the liquid level analog quantity interface, and then the measured value of the standard liquid level sensor is compared with the value measured by the magnetic turning plate liquid level sensor for verification, so that an accurate error range can be obtained to judge whether the detected sensor is qualified or not, and the detected sensor is displayed on an LCD display module, the process is completely automatic, and manual observation is not needed.
Foretell magnetism turns over connection of board level sensor and liquid reserve tank and adopts quick-operation joint to be connected, can realize the quick replacement between the board level sensor that turns over of measuring magnetism through quick-operation joint, reaches efficiency and improves.
The control chip on the circuit board adopts a single chip microcomputer or a PLC.
The utility model provides a pair of board level sensor calibration equipment is turned over to magnetism gathers the liquid level value that measuring sensor sent through the controller to on the liquid level value that will calculate shows the LCD display screen, whether action through predetermined switching signal judges the sensor qualified or not, whole process can be accomplished automatically, has improved the measuring rate of accuracy, and the device can change fast and measure the liquid level sensor of volume, is fit for the calibration of large batch sensor.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a circuit board circuit structure;
fig. 3 is a schematic diagram of a circuit structure of a circuit board in a preferred scheme.
In the figure: the liquid level detection device comprises a liquid storage tank 1, a magnetic turning plate liquid level sensor 2, a checking device box body 3, an alternating current power supply socket 4, a circuit board 5, an LCD display module 6, a controller 7, a liquid level signal analog quantity interface 8, an A/D conversion module 9, a liquid level signal switching quantity interface 10, a direct current power supply module 11, a reset button SK12, a standard liquid level measurement unit 13, a communication interface 14 and a standard liquid level analog quantity interface 15.
Detailed Description
As shown in figure 1, a calibration device of a magnetic turning plate liquid level sensor comprises a calibration device box body 3, a liquid storage box 1 is arranged in the calibration device box body 3, a standard liquid level measurement unit 13 is fixedly arranged on the liquid storage box 1, the liquid storage box 1 is detachably connected with the magnetic turning plate liquid level sensor 2, the magnetic turning plate liquid level sensor 2 is electrically connected with a circuit board 5, an LCD display module 6 is arranged on the calibration device box body 3, the LCD display module 6 is electrically connected with the circuit board 5, the circuit board 5 is electrically connected with an AC power socket 4 outside the calibration device box body 3, a reset button SK12 on the calibration device box body 3 is electrically connected with the circuit board 5, liquid with fixed capacity is filled in the liquid storage box 1, the standard liquid level measurement unit 13 displays the current liquid level value, the magnetic turning plate liquid level sensor 2 is connected to convert the analog quantity signal of the sensor into the current liquid level, by comparing with the standard leaf level value to check whether the range is exceeded, the reset button SK12 can be used to reset the device during measurement.
As shown in fig. 2, the connection structure of the circuit board 5 is: the circuit board 5 is provided with a controller 7, a liquid level signal switching value interface 10 on the magnetic turning plate liquid level sensor 2 is electrically connected with an input end of the controller 7, a digital value output end of an A/D conversion module 9 is electrically connected with an input end of the controller 7, an analog value input end of the A/D conversion module 9 is electrically connected with a liquid level signal analog value interface 8 of the magnetic turning plate liquid level sensor 2, an LCD display module 6 is electrically connected with an output end of the controller 7, an analog value signal of the magnetic turning plate liquid level sensor 2 is converted into a corresponding numerical value through the A/D conversion module 9, a current measured liquid level value is obtained on the controller 7 through calculation and then is output to the LCD display module 6, the liquid level signal switching value interface 10 is a liquid level value switch preset by the magnetic turning plate liquid level sensor 2 and is preset to the lower limit of an error range of a display value on a standard liquid level measuring, whether the magnetic turning plate liquid level sensor 2 is qualified or not can be judged through whether the controller 7 receives a switching value signal or not.
The a/D conversion module 9 is a commercially available product, for example, an AD/DA conversion module of PCF8591 type.
The LCD display module 6 is a commercially available product, such as an LCD1602A type LCD display screen.
As shown in fig. 2, the circuit board 5 is provided with a dc power module 11, the dc power module 11 is electrically connected to the a/D conversion module 9, the LCD display module 6 and the controller 7, and the dc power module 11 provides a low voltage required by the device.
As shown in fig. 2 and 3, the output end of the controller 7 is further provided with a communication interface 14, and the detection result can be sent to an upper computer for recording through the communication interface 14, so that process recording is facilitated during enterprise production.
In a preferred embodiment, as shown in fig. 2, the standard liquid level measuring unit 13 is a liquid level scale, and the preset switching value range can be adjusted by manual observation.
The preferable scheme is as shown in fig. 3, the standard liquid level measuring unit 13 is a standard liquid level sensor, a standard liquid level analog quantity interface 15 of the standard liquid level sensor is electrically connected with an input end of the a/D conversion module 9, the standard liquid level sensor transmits the measured standard liquid level to the controller 7 through the liquid level analog quantity interface 15, and then the measured value is compared with the value measured by the magnetic flip plate liquid level sensor 2, so that an accurate error range can be obtained to judge whether the detected sensor is qualified or not, and the detected sensor is displayed on the LCD display module 6, the process is completely automatic, and manual observation is not needed.
Foretell magnetism turns over connection of board level sensor 2 and liquid reserve tank 1 and adopts quick-operation joint to be connected, can realize through quick-operation joint that the measuring magnetism turns over the quick replacement between board level sensor 2, reaches efficiency and improves.
The control chip on the circuit board 5 adopts a single chip microcomputer or a PLC, for example, a single chip microcomputer chip STM32F103RCT 6.
Claims (8)
1. The utility model provides a board level sensor calibration equipment is turned over to magnetism, it includes calibration equipment box (3), its characterized in that: be equipped with liquid reserve tank (1) in calibration equipment box (3), be equipped with standard liquid level measurement unit (13) on liquid reserve tank (1) fixedly, detachably is connected with magnetism and turns over board level sensor (2) on liquid reserve tank (1), magnetism turns over board level sensor (2) and is connected with circuit board (5) electricity, be equipped with LCD display module (6) on calibration equipment box (3), LCD display module (6) are connected with circuit board (5) electricity, circuit board (5) are connected with the outer alternating current power supply socket (4) electricity of calibration equipment box (3), reset button SK (12) on calibration equipment box (3) are connected with circuit board (5) electricity.
2. The calibration device for the liquid level sensor of the magnetic flip board as claimed in claim 1, wherein the connection structure of the circuit board (5) is as follows: the controller (7) is arranged on the circuit board (5), a liquid level signal switching value interface (10) on the magnetic turn-over plate liquid level sensor (2) is electrically connected with an input end of the controller (7), a digital value output end of the A/D conversion module (9) is electrically connected with an input end of the controller (7), an analog quantity input end of the A/D conversion module (9) is electrically connected with a liquid level signal analog value interface (8) of the magnetic turn-over plate liquid level sensor (2), and the LCD display module (6) is electrically connected with an output end of the controller (7).
3. The magnetic turn plate liquid level sensor verifying device of claim 2, which is characterized in that: the circuit board (5) is provided with a direct current power supply module (11), and the direct current power supply module (11) is electrically connected with the A/D conversion module (9), the LCD display module (6) and the controller (7).
4. The magnetic turn plate liquid level sensor verifying device of claim 2, which is characterized in that: the output end of the controller (7) is also provided with a communication interface (14).
5. The magnetic turn plate liquid level sensor verifying device of claim 2, which is characterized in that: the standard liquid level measuring unit (13) is a liquid level graduated scale.
6. The magnetic turn plate liquid level sensor verifying device of claim 2, which is characterized in that: the standard liquid level measurement unit (13) is a standard liquid level sensor, and a standard liquid level analog quantity interface (15) of the standard liquid level sensor is electrically connected with the input end of the A/D conversion module (9).
7. The magnetic turn plate liquid level sensor verifying device of claim 2, which is characterized in that: the magnetic turning plate liquid level sensor (2) is connected with the liquid storage tank (1) by adopting a quick connector.
8. The magnetic turn plate liquid level sensor verifying device of claim 1 or 2, which is characterized in that: and a control chip on the circuit board (5) adopts a single chip microcomputer or a PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020602669.9U CN211783764U (en) | 2020-04-21 | 2020-04-21 | Calibration device for magnetic turning plate liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020602669.9U CN211783764U (en) | 2020-04-21 | 2020-04-21 | Calibration device for magnetic turning plate liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211783764U true CN211783764U (en) | 2020-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020602669.9U Expired - Fee Related CN211783764U (en) | 2020-04-21 | 2020-04-21 | Calibration device for magnetic turning plate liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211783764U (en) |
-
2020
- 2020-04-21 CN CN202020602669.9U patent/CN211783764U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 Termination date: 20210421 |
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| CF01 | Termination of patent right due to non-payment of annual fee |