Automatic grading detection system supporting analog output pressure sensor

Abstract

An automatic grading detection system supporting an analog output pressure sensor is characterized by comprising a pressure controller, a gas circuit device, a multi-path voltage acquisition device, a sensor detection tool, the analog output pressure sensor, a calibrated sensor power supply, a printing device, a controllable temperature box, a system control device and a device connection cable. According to the utility model, multi-path voltage acquisition control and controllable temperature box control in the detection system can be carried out, zero manual operation is basically realized, the labor cost is saved, the working efficiency is improved, and the possibility of misoperation in the process is avoided to the greatest extent. The printing device performs printing confirmation of the test result through the system control device, and the processed original data and the grading result are printed and signed in time after detection is finished, so that the detection process is optimized, the process quality is controlled, and the working process and efficiency of each part are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of analog output sensor testing, and particularly relates to an automatic grading detection system for supporting analog output pressure sensors. Background Technique

[0002] Detecting analog output pressure sensors is an important process in the product production process. The existing detection method for analog output sensors is to place the sensors one by one inside the tooling, supply power through an external power supply, manually set the pressure with a pressure controller, conduct pressure tests with a high-precision bench meter connected to the output pins of the sensors, and manually record the test results. The above steps are repeated when testing the next product. The following problems may exist during the detection process: The pressure controller needs to be set manually. When the number of pressure test points is too large or the pressure unit changes, repeated operations are required. The process is cumbersome and manual operations are prone to errors. If the pressure setting is incorrect, the product performance may be damaged; Manually recording the detection data involves a large amount of work, the production detection efficiency is low, and the form for detecting and recording needs to be printed repeatedly during the detection process, resulting in unnecessary time waste. After the original record is filled in, the sensitivity and drift index calculations are required, and the detection process is relatively cumbersome; It only supports the detection of analog output pressure sensors with fixed specifications and models. After the power supply voltage changes and the grading determination of the output voltage changes, separate process detections are required, and the versatility is not strong.

[0003] The defects of the existing analog output sensor detection method are as follows:

[0004] (1) The detected products are single and inflexible

[0005] (2) Due to the influence of manual operations and pressure stability on output acquisition, the authenticity of the data collected each time cannot be guaranteed

[0006] (3) The original data of output acquisition needs to be filled in manually, and manual calculations are required when calculating indicators such as sensitivity and drift parameters, and the data processing is relatively complex

[0007] (4) The number of detected products is limited and it is not easy to expand

[0008] (5) After detection, the results after grading processing often need to be stored electronically, and the existing detection method has a cumbersome quality control. Summary of the Invention

[0009] Aiming at the above-mentioned defect problems of conventional detection, the embodiment of the present application provides an automatic grading detection system for supporting analog output pressure sensors, which has a positive impact on improving efficiency, enriching the applicability of products, and optimizing the quality process control in many aspects by conducting system-level design, optimizing the detection process, enriching and expanding the detected product models, and flexibly grading, calculating, outputting, and printing.

[0010] The utility model provides an automatic grading detection system for a pressure sensor supporting analog output, including: a pressure controller, a gas circuit device, a multi-channel voltage acquisition device, a sensor detection tooling, an analog output pressure sensor, a calibrated sensor power supply, a printing device, a temperature-controlled incubator, a system control device, and equipment connection cables;

[0011] Among them, the analog output pressure sensor is placed inside the detection tooling, and the calibrated power supply externally powers the analog output pressure sensor through the tooling pins. The pressure controller is connected to the reserved air holes on the tooling through the gas circuit device. The acquisition end cables of the multi-channel voltage acquisition device are connected to the tooling pins. The sensor product is placed inside the temperature-controlled incubator to support temperature drift testing. Devices such as the printing device, the pressure controller, the multi-channel voltage acquisition device, and the temperature-controlled incubator are connected to the system control device through the equipment connection cables.

[0012] The pressure controller supports absolute pressure output and gauge pressure output and has a communication interface.

[0013] The sensor detection tooling includes a gas circuit connection interface and a pin connector.

[0014] The detection tooling meets the product characteristic requirements of absolute pressure input or gauge pressure input for the product and supports the material to quickly reach the set constant temperature inside the incubator after being placed in the incubator.

[0015] The pressure sensor is connected to the pressure controller through the external air nozzle of the detection tooling via the gas circuit device.

[0016] The number of the connecting pipelines is one, and the inside of the detection tooling supports the pressure of the pressure sensor product to be balanced.

[0017] The multi-channel voltage acquisition device includes a multi-channel meter collector, a voltage acquisition card, and a communication interface;

[0018] The multi-channel meter collector supports the expansion of the voltage acquisition card, and the communication interface is connected to the system control device through a cable.

[0019] The detection tooling of the device pressure sensor is connected to the multi-channel meter voltage acquisition card.

[0020] The system printing device, the temperature-controlled incubator, the pressure controller, and the multi-channel voltage acquisition device are connected to the system detection device.

[0021] The system control device controls the output of the pressure controller and the acquisition of the multi-channel voltage acquisition device.

[0022] The automatic grading is carried out inside the system control device and the test results are output through the printing device.

[0023] The automatic grading detection system for a simulated output pressure sensor provided by the present utility model has the following beneficial effects:

[0024] (1) The pressure controller outputs pressure through the system control device. It supports more intuitive, convenient, and rapid function conversions such as pressure output mode and unit, facilitating batch operations after quantity expansion, improving output efficiency, and saving labor.

[0025] (2) The detection tooling is convenient for product installation and expansion, simple and durable, and can simultaneously detect products in quantities ranging from more than a dozen to dozens, simplifying the detection method and improving production detection efficiency.

[0026] (3) The detection process is flow-controlled through the display interface. The output values of each device are intuitively displayed, and the results after detection grading are automatically generated and displayed on the interface as required. The operation is user-friendly, the results are intuitive, there is no need to record and calculate data, the dependence on the operator's experience is reduced, and the error caused by operation or recording mistakes during the actual detection process is minimized.

[0027] (4) The test results are saved according to the original collected data and the graded data after processing. The detection process is more standardized and complete; the original collected data and the graded data can be mutually converted and verified through the system control device, ensuring the integrity and accuracy of the test data to the greatest extent and facilitating subsequent statistics, etc.

[0028] (5) Adding a print output function improves the quality process and quality result control, and enhances department efficiency.

[0029] (6) This system not only supports conventional detection but also supports performance testing of simulated output sensors under various temperature conditions, with flexible application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are incorporated herein and form a part of the specification, showing embodiments in accordance with the present utility model and, together with the specification, are used to explain the principles of the present utility model.

[0031] Figure 1 is a schematic diagram of an automatic grading detection system for a simulated output pressure sensor shown according to an exemplary embodiment;

[0032] Figure 2 is a schematic diagram of a sensor detection tooling and its internal structure shown according to an exemplary embodiment;

[0033] Figure 3 is a schematic diagram of the system control device shown according to an exemplary embodiment;

[0034] Figure 4It is a schematic connection diagram of a multi-channel acquisition device and a voltage acquisition card shown according to an exemplary embodiment. Detailed implementation manners

[0035] In order to more comprehensively understand the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are only for reference and explanation, and are not used to limit the embodiments of the present disclosure. In the following technical descriptions, for the sake of explanation, sufficient understanding of the disclosed embodiments has been provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner to simplify the drawings.

[0036] A system for automatically grading and detecting an analog output pressure sensor, as Figure 1 shown, includes: a pressure controller, a gas circuit device, a multi-channel voltage acquisition device, a sensor detection tooling, an analog output pressure sensor, a calibrated sensor power supply, a printing device, a temperature-controlled incubator, a system control device, and device connection cables;

[0037] Among them, the analog output pressure sensor is placed inside the detection tooling, and the calibrated power supply supplies external power to the analog output pressure sensor through the tooling pins. The pressure controller is connected to the reserved air holes on the tooling through the gas circuit device. The acquisition end cables of the multi-channel voltage acquisition device are connected to the tooling pins. The sensor product is placed inside the temperature-controlled incubator to support temperature drift testing. Devices such as the printing device, the pressure controller, the multi-channel voltage acquisition device, and the temperature-controlled incubator are connected to the system control device through device connection cables.

[0038] Specifically, the pressure controller, the multi-channel voltage acquisition device, and the calibrated power supply are connected to the system control device through the RS232 serial port; the temperature-controlled incubator is connected to the system control device through the RS485 serial port; the printing device is connected to the system control device through the USB.

[0039] In an optional embodiment, the specifications, models, and accuracies of the pressure controller can be selected according to the actual detection accuracy requirements. The pressure controller should support absolute pressure output and gauge pressure output and be configured with a serial port. The specifications, models, and accuracies of the temperature-controlled incubator can be selected according to the actual detection accuracy requirements and be configured with a serial port. There are no specific restrictions on the printing device, and it can be selected according to actual needs. The power supply needs to be calibrated, and the specific model is not restricted and can be selected according to actual needs.

[0040] The detection tooling is composed of a cavity for placing the analog output pressure sensor inside and a gas circuit device with a gas nozzle, as Figure 2As shown. A single tooling supports the simultaneous detection of 16 products, and the number of extended toolings can support a multiple-level expansion in quantity. The lower part of the cavity is connected to the circuit board, and the pins of the pressure sensor to be detected are led out through the printed circuit board. The pressure is input through the air nozzle on the upper cover of the tooling.

[0041] The printing device, the temperature-controlled box, the multi-channel voltage acquisition device, the power supply, and the pressure controller are connected to the operation control terminal in the system control device via communication lines, as Figure 3 shown, and the display interface performs detection control, result, and related numerical display.

[0042] The multi-channel voltage acquisition device selects the calibrated device according to the actual detection product accuracy requirements, as Figure 4 shown. The acquisition device supports the plug-in expansion of the voltage acquisition card. Currently, a single voltage acquisition card supports 20-channel tests simultaneously. The pins of the sensor to be detected led out by the detection tooling are connected to the voltage acquisition card; the multi-meter acquisition device is connected to the system control device through a serial connection line.

[0043] As described above, only the preferred specific implementation manner of this application is provided, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in this application should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A system for automatically grading a pressure sensor supporting analog output, characterized in that: include: Pressure controller, gas circuit device, multi-channel voltage acquisition equipment, sensor detection tooling, analog output pressure sensor, power supply, printing equipment, controllable temperature box, system control device and equipment connection cables; Among them, the pressure controller is connected to the sensor detection tooling through the air circuit device; the collection end of the multi-channel voltage acquisition device is connected to the sensor detection tooling; the analog output pressure sensor is placed inside the detection tooling; the power supply supplies power to the outside of the analog output pressure sensor; the sensor product is placed inside the controllable temperature box for temperature drift testing; the printing device, pressure controller, multi-channel voltage acquisition device, and controllable temperature box are respectively connected to the system control device through device connection cables.

2. The automatic grading detection system supporting analog output pressure sensor according to claim 1 is characterized in that: The pressure controller has a communication interface supporting absolute pressure output and gauge pressure output.

3. The automatic grading detection system supporting analog output pressure sensor according to claim 1, characterized in that: The sensor detection tooling comprises a gas path connection interface and a pin connection plug.

4. The automatic grading detection system supporting analog output pressure sensor according to claim 3 is characterized in that: The analog output pressure sensor is connected to the pressure controller via a gas circuit connection interface via a gas circuit device.

5. The automatic grading detection system supporting analog output pressure sensor according to claim 3 is characterized in that: The number of the gas circuit connection interface is one; the sensor detection tooling supports pressure balance of the pressure sensor product.

6. The automatic grading detection system supporting analog output pressure sensor according to claim 1, characterized in that: The multi-channel voltage acquisition device comprises a multi-channel meter collector, a voltage acquisition card and a communication interface; the multi-channel meter collector supports voltage acquisition card expansion; the communication interface is connected to the system control device via a cable.

7. The automatic grading detection system supporting analog output pressure sensor according to claim 6, characterized in that: The sensor detection tooling is connected to the voltage acquisition card.

8. The automatic grading detection system supporting analog output pressure sensor according to claim 1, characterized in that: The system control device controls the output of the pressure controller and the acquisition of the multi-channel voltage acquisition equipment.

9. The automatic grading detection system supporting analog output pressure sensor according to claim 1, characterized in that: Automatic grading is performed inside the system control device and the test results are output through a printing device.

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