Sensor on-line monitoring aging test system and device

Abstract

The utility model discloses a sensor on-line monitoring aging test system and device. The device comprises an upper computer, an industrial personal computer, an incubator, a real-time data acquisition module, a test power supply, a 15-core connector, a digital multimeter, an RS232 serial port module and an RS422 serial port module. The upper computer is connected with the industrial personal computer, and the industrial personal computer is respectively connected with the incubator, the real-time data acquisition module and the test power supply; the incubator is used for providing a test environment for a sensor aging test; the real-time data acquisition module is respectively connected with the digital multimeter, the RS232 serial port module and the RS422 serial port module; the digital multimeter is used for monitoring analog signals of the test sensor; the RS232 serial port module and the RS422 serial port module are used for monitoring digital signals of the test sensor; the test power supply is connected with the female head of the 15-core connector and is used for supplying power to the test sensor; and the male head of the 15-core connector is connected with a test sensor. According to the utility model, the high-temperature aging test of the sensor is realized, and output analog signals or digital signals can be detected and displayed and stored in the upper computer in real time.

Description

Technical Field

[0001] This utility model belongs to the field of electronic device reliability technology, specifically relating to a sensor online monitoring aging test system and device. Background Technology

[0002] Sensors interact with the external environment through their sensitive elements, effectively sensing the physicochemical information of their installation location. Therefore, sensors are widely used in aircraft, automobiles, ships, and consumer electronics, providing crucial information to their superior systems. However, different environmental stresses arise during research and development, production, transportation, and storage, leading to reliability issues such as excessive performance drift and decreased output stability. To address this problem, environmental testing systems are needed to simulate the environmental stresses faced by sensors at each stage. By monitoring the sensor's output signal during environmental testing, the sensor's reliability can be evaluated.

[0003] For temperature reliability aging tests of sensors, existing environmental test chambers generally only provide the test environment required by the sensor, such as temperature environment, humidity environment, vibration environment, pressure environment, etc. The performance testing of the sensor under test generally needs to be interrupted and completed in the performance testing equipment. This test method cannot meet the full-process monitoring of the sensor under test in the aging test. Utility Model Content

[0004] The main purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to propose an online sensor monitoring aging test system and device that integrates a temperature chamber, power supply, and real-time data acquisition module to realize the full-process monitoring of the sensor under test in the aging test.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An online sensor monitoring aging test system is provided, which includes a host computer and an industrial control computer, and includes a temperature chamber, a real-time data acquisition module, a test power supply, a 15-pin connector, a digital multimeter, an RS232 serial port module and an RS422 serial port module.

[0007] The host computer is connected to the industrial control computer, which in turn is connected to the temperature chamber, the real-time data acquisition module, and the test power supply.

[0008] The temperature chamber, controlled by an industrial computer or manually, provides a test environment for sensor aging tests.

[0009] The real-time data acquisition module is connected to a digital multimeter, an RS232 serial port module, and an RS422 serial port module, respectively, and is used to acquire the data converted by the digital multimeter, RS232 serial port module, and RS422 serial port module, that is, the analog or digital signals output by the test sensor.

[0010] A digital multimeter, connected to a female 15-pin connector, is used to monitor analog signals from test sensors;

[0011] The RS232 and RS422 serial port modules are connected to the female connector of the 15-pin connector for monitoring the digital signals of the test sensors.

[0012] The test power supply connects to the female connector of the 15-pin connector to power the test sensor and provide the test voltage.

[0013] The male connector of the 15-pin connector is used to connect to the aging test sensor inside the temperature chamber;

[0014] The industrial computer is used for setting the temperature of the temperature chamber, controlling the power supply output of the test power supply to the sensors, collecting data collected by the real-time data acquisition module and transmitting it to the host computer.

[0015] The host computer is used for user interaction and operation, including the configuration of the temperature chamber, real-time data acquisition module, test power supply, RS232 serial port module and RS422 serial port module, real-time test data display and test data storage management.

[0016] Furthermore, it also includes a power distribution system for obtaining power from an external power source and distributing it to the various components of the sensor-based online monitoring aging test system.

[0017] Furthermore, it also includes an audible and visual alarm module, which specifically includes a speaker and indicator lights, used to provide audible and visual alarm prompts when the test unexpectedly stops.

[0018] This utility model also includes an online sensor monitoring aging test device, which is equipped with a host computer and an industrial control computer, including a cabinet, a temperature chamber, a real-time data acquisition module, a test power supply, a 15-pin connector, a digital multimeter, an RS232 serial port module and an RS422 serial port module.

[0019] The host computer is connected to the industrial control computer, which is connected to the temperature chamber, the real-time data acquisition module, and the test power supply. The real-time data acquisition module is connected to a digital multimeter, an RS232 serial port module, and an RS422 serial port module.

[0020] The test power supply, digital multimeter, RS232 serial port module and RS422 serial port module are respectively connected to the female head of the 15-pin connector, and the male head of the 15-pin connector is connected to the aging test sensor inside the temperature chamber.

[0021] The industrial control computer, host computer, temperature chamber, real-time data acquisition module, test power supply, digital multimeter, RS232 serial port module, and RS422 serial port module are installed in the cabinet, and the 15-pin connector is installed in the temperature chamber.

[0022] Furthermore, the incubator is equipped with 32 sensor stations, which are divided into four groups on average.

[0023] The incubator contains four honeycomb metal panels and copper pillars;

[0024] The chamber is also equipped with a metal bracket to fix four honeycomb metal plates. The honeycomb metal plates are fixed on the metal bracket, and the honeycomb metal plates are used with copper pillars to fix the sensors. Each honeycomb metal plate is equipped with a set of sensor stations.

[0025] Furthermore, the RS232 serial port module is specifically configured as a control element for RS232 transmission parameters, and the RS422 serial port module is specifically configured as a control element for RS422 transmission parameters.

[0026] Each sensor station inside the temperature chamber is equipped with an RS232 serial port module and an RS422 serial port module;

[0027] There are four digital multimeters. Each sensor station shares one digital multimeter for inspection. Each digital multimeter can be independently set to perform voltage or resistance inspection.

[0028] Furthermore, the test power supply consists of three DC power supplies, totaling four sets, with each set of sensor stations connected in parallel to one test power supply for power supply.

[0029] Furthermore, it also includes a power distribution system for obtaining power from an external power source and distributing it to the various components of the sensor-based online monitoring aging test device; the power distribution system is located outside the cabinet.

[0030] Furthermore, it also includes an audible and visual alarm device, which specifically includes a speaker and indicator lights, used to provide audible and visual alarm prompts when the test unexpectedly stops; the audible and visual alarm device is installed on the outer surface of the cabinet.

[0031] Furthermore, it also includes a display screen; the display screen is fixed on the cabinet and is used to display information and interfaces output by the host computer.

[0032] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0033] 1. This utility model enables high-temperature aging tests on sensors, can detect output analog or digital signals, and can display and store data in real time on a host computer.

[0034] 2. This utility model has its own built-in sensor power supply, so no external power supply is required when conducting reliability tests.

[0035] 3. This utility model is equipped with comprehensive protection functions. Each power supply is equipped with independent and comprehensive overvoltage, undervoltage, overcurrent, short circuit and overtemperature protection; the temperature chamber is equipped with overtemperature protection and leakage protection, and this utility model is equipped with an alarm module, which can provide audible and visual alarm prompts when the test is unexpectedly stopped. After the alarm, the temperature chamber will automatically stop heating. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the device in the embodiment;

[0037] Figure 2 This is a schematic diagram of the device composition in the embodiment;

[0038] Figure 3 This is a schematic diagram showing the external appearance of the device in the embodiment;

[0039] Figure 4 This is a diagram of the internal layout of the incubator;

[0040] Figure 5 This is a schematic diagram of a honeycomb metal panel. Detailed Implementation

[0041] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0042] Example

[0043] like Figure 1 and Figure 2 As shown, this utility model discloses an online sensor monitoring aging test device, which includes a cabinet, a host computer, an industrial control computer, a temperature chamber, a real-time data acquisition module, a test power supply, a 15-pin connector, a digital multimeter, an RS232 serial port module, and an RS422 serial port module.

[0044] The host computer is connected to the industrial control computer, which in turn connects to the temperature chamber, the real-time data acquisition module, and the test power supply. The real-time data acquisition module is connected to a digital multimeter, an RS232 serial port module, and an RS422 serial port module. The test power supply, digital multimeter, RS232 serial port module, and RS422 serial port module are connected to the female connector of a 15-pin connector, and the male connector of the 15-pin connector is connected to the aging test sensor inside the temperature chamber. The industrial control computer, host computer, temperature chamber, real-time data acquisition module, test power supply, digital multimeter, RS232 serial port module, and RS422 serial port module are all located in the cabinet, and the 15-pin connector is located inside the temperature chamber.

[0045] The system comprises the following components: a temperature chamber controlled by an industrial computer or manually, providing the testing environment for sensor aging tests; a real-time data acquisition module for acquiring data converted from analog or digital signals output by a digital multimeter, RS232 serial port module, and RS422 serial port module; a digital multimeter for monitoring analog signals from the test sensor; RS232 and RS422 serial port modules for monitoring digital signals from the test sensor; a test power supply for powering the test sensor and providing the test voltage; an industrial computer for setting the temperature of the temperature chamber, controlling the power supply output to the sensor, collecting data from the real-time data acquisition module, and transmitting it to the host computer; and a host computer for user interaction and operation, including configuring the temperature chamber, real-time data acquisition module, test power supply, RS232 serial port module, and RS422 serial port module, displaying real-time test data, and managing test data storage.

[0046] like Figure 3 The diagram shown is a schematic representation of the overall appearance of the experimental apparatus. In this embodiment, the overall dimensions of the apparatus are 120cm (length) * 140cm (depth) * 185cm (height). The overall usage parameters of the apparatus are as follows:

[0047] Ambient temperature: 0℃~45℃;

[0048] Relative humidity: ≤80%RH;

[0049] Input voltage: AC220V±10%;

[0050] Input frequency: 50Hz;

[0051] Power fuse: 32A;

[0052] Power consumption: Maximum 7000W;

[0053] Surrounding environment: free from corrosive gases, strong magnetic interference, and good heat dissipation and ventilation.

[0054] In this embodiment, the overall safety performance of the testing device includes:

[0055] 1. In the event of normal test stop, emergency stop, or power failure, the device automatically switches to a safe mode of automatic discharge after the test sample is powered off.

[0056] 2. It has reliable safety protection, alarm, and insurance measures, and the safety and quality performance of the device complies with the relevant provisions of national and industry technical specifications and mandatory standards;

[0057] 3. The safety performance requirements of the device shall comply with the provisions of GB 19517-2009 "National Technical Specification for Safety of Electrical Equipment", GB / T15706-2012 "General Rules for Safety Design of Machinery: Risk Assessment and Risk Reduction", GB 5226.1-2008 "Electrical Safety of Machinery: Electrical Equipment - Part 1: General Technical Conditions", and GB 8196-2003 "General Requirements for Design and Manufacture of Fixed and Movable Protective Devices for Machinery".

[0058] In this embodiment, as Figure 4 As shown, the temperature chamber contains 32 sensor stations, which are divided into four groups. Each sensor station is equipped with both an RS232 serial port module and an RS422 serial port module. The chamber contains four honeycomb metal panels (approximately 250mm x 500mm) and copper pillars. A stainless steel bracket is also fixed inside the chamber to secure the four honeycomb metal panels. The honeycomb metal panels, along with the copper pillars, are used to fix the sensors. Each honeycomb metal panel houses one group of sensor stations. Figure 4 As shown, the honeycomb metal panels are arranged in the upper left, lower left, upper right, and lower right positions; as... Figure 5 The image shown is a schematic diagram of a honeycomb metal panel.

[0059] The basic parameters of the incubator are configured as follows in this embodiment:

[0060] Nominal volume: 216L;

[0061] Temperature range: (ambient temperature +20)℃~200℃;

[0062] Temperature fluctuation: ≤200℃: 0.4℃ (or ±0.2℃ if expressed according to GB / T5170.2-1996);

[0063] Temperature error: ≤100℃: ±1.5℃; >100℃: ±2.0℃;

[0064] Protection functions: It comes with over-temperature protection and leakage protection, and can automatically stop heating after an over-temperature alarm.

[0065] In this embodiment, the RS232 serial port module is specifically configured as a control element for RS232 transmission parameters, and the RS422 serial port module is specifically configured as a control element for RS422 transmission parameters.

[0066] In this embodiment, four digital multimeters are used. Each sensor station shares one digital multimeter for inspection, and each digital multimeter can be independently set to perform voltage or resistance inspection. The technical performance indicators of the digital multimeter for analog voltage detection at the sensor station are as follows:

[0067] Detection range: -40V to 40V;

[0068] Units: μV / mV / V;

[0069] Measurement error: ±0.1% ±2 LSB;

[0070] The technical performance indicators for sensor station resistance detection are as follows:

[0071] Detection range: 1 euro to 1000 kilo euros;

[0072] Unit: Euros / kilo-Euros;

[0073] Measurement error: ±0.1% ±2LSB.

[0074] In this embodiment, the test power supply is specifically a three-channel DC power supply, with a total of four sets. Each test power supply has three power outputs simultaneously (V1+\V2+\V3-), and each group of sensor workstation sensors is connected in parallel to one test power supply for power supply.

[0075] In this embodiment, the first set of test power supply corresponds to the following workstations: 01, 02, 03, 04, 05, 06, 07, and 08.

[0076] The second set of test power supplies corresponds to the following workstations: 09, 10, 11, 12, 13, 14, 15, 16;

[0077] The third set of test power supplies corresponds to the following workstations: 17, 18, 19, 20, 21, 22, 23, and 24.

[0078] The fourth set of test power supplies corresponds to the following workstations: 25, 26, 27, 28, 29, 30, 31, and 32.

[0079] The test power supply can operate in two modes: local operation and programmable control. Local operation allows manual adjustment / setting of power supply test parameters. Programmable control mode automatically starts output based on the set voltage (each power supply has 3 outputs, which can be configured on the host computer to output all 3 channels simultaneously or only a specified channel). Each power supply is equipped with independent and comprehensive overvoltage, undervoltage, overcurrent, short circuit, and overtemperature protection.

[0080] The parameters of the test power supply are shown in Table 1 below.

[0081]

[0082] Table 1

[0083] In this embodiment, a power distribution system and an audible and visual alarm device are also included. The power distribution system is used to obtain power from an external power source and distribute it to the various components of the sensor online monitoring aging test device. The power distribution system is located outside the cabinet. The audible and visual alarm device specifically includes a speaker and an indicator light, which are used to provide audible and visual alarm prompts when the test is unexpectedly stopped. The audible and visual alarm device is located on the outer surface of the cabinet.

[0084] In this embodiment, a display screen and a keyboard and mouse are also included. The display screen is fixed on the cabinet and is used to display information and interfaces output by the host computer. The keyboard and mouse are used for user input to the host computer. In actual implementation, the host computer software and database can be customized. The host computer software can adopt a Windows-based Chinese menu display interface to achieve intuitive display, convenient operation, and data storage. The host computer software can be configured with functions such as setting an administrator password, advanced settings (number of power supplies, whether the temperature chamber is programmable, whether the power supply is programmable, temperature chamber serial port configuration, power supply serial port configuration, inspection serial port configuration, default path, and workstation serial port configuration table), setting test parameters, and alarm prompts.

[0085] In this embodiment, the device is divided into 4 test areas when it is working. Each area can start and stop the test independently. For example, when the first group is outputting, stations 1-8 are powered on simultaneously for testing, and when it is stopped, they are all powered off to stop the test.

[0086] The aging test starting up the device in this embodiment includes the following steps:

[0087] A. The sensor to be tested is installed and fixed inside the temperature chamber using a honeycomb metal plate and copper pillars;

[0088] B. Connect the pins of the sensor under test to the male connector of the 15-pin connector using wires;

[0089] C. Connect the male and female connectors of the 15-pin connector;

[0090] D. Open the host computer and enter the test batch number name and data storage path;

[0091] E. Set the power supply for the current test group to provide a power-on working environment for the sensor under test;

[0092] F. Set the test program for the current test group's temperature chamber to provide a temperature test environment for the sensor under test;

[0093] G. Perform the test run, and apply test conditions to the device according to the set parameters and the selected test area;

[0094] H. After the test is completed, remove the sensor under test and store the test data.

[0095] In addition, if the test stops unexpectedly, it can be manually resumed according to the parameters set at the time of the stop. When it is necessary to stop the test, the aging test can be stopped in single-channel or multi-channel mode. There are two ways to stop the aging test: automatic stop when the test time expires (4 independent timers, 0-9999 hours, the test stops when the time expires, the power supply of the corresponding group is automatically turned off, and the acquisition and storage of data are automatically stopped) and manual stop by selecting the stop button.

[0096] During the aging test, the device monitors data in real time, including chamber temperature, sensor station voltage or resistance, and analog or digital signals from the sensor stations, and displays and stores this data in the host computer. The host computer uses a database to manage data files, preprocesses the stored real-time data, and can also export the actual stored data to an Excel spreadsheet for later analysis. The data storage interval is 5 seconds to 9999 seconds for each of the four test areas.

[0097] It should also be noted that, in this specification, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0098] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sensor online monitoring aging test system, provided with a host computer and an industrial computer, characterized in that, The system comprises a temperature box, a real-time data acquisition module, a test power supply, a 15-core connector, a digital multimeter, an RS232 serial module and an RS422 serial module; The host computer is connected with the industrial computer, and the industrial computer is connected with the temperature box, the real-time data acquisition module and the test power supply respectively; The temperature box is controlled by the industrial computer or manually, and provides a test environment for sensor aging test; The real-time data acquisition module is connected with the digital multimeter, the RS232 serial module and the RS422 serial module respectively, and is used for collecting data converted by the digital multimeter, the RS232 serial module and the RS422 serial module, i.e. analog signals or digital signals output by the test sensor; The digital multimeter is connected with the female head of the 15-core connector, and is used for monitoring analog signals of the test sensor; The RS232 serial module and the RS422 serial module are connected with the female head of the 15-core connector, and are used for monitoring digital signals of the test sensor; The test power supply is connected with the female head of the 15-core connector, and is used for power supply of the test sensor and providing test voltage; The male head of the 15-core connector is connected with the aging test sensor in the temperature box; The industrial computer is used for temperature setting of the temperature box, power supply output of the test power supply to the sensor, collection of data collected by the real-time data acquisition module and transmission of the data to the host computer; The host computer is used for user interaction and operation, and comprises configuration of the temperature box, the real-time data acquisition module, the test power supply, the RS232 serial module and the RS422 serial module, real-time test data display and test data storage management.

2. The sensor on-line monitoring aging test system according to claim 1, characterized in that, The system further comprises a power distribution system, which is used for obtaining power from an external power supply and distributing the power to each component of the sensor online monitoring aging test system.

3. The sensor online monitoring aging test system according to claim 1, characterized in that, The system further comprises an audible and light alarm module, which comprises a loudspeaker and a signal lamp, and is used for audible and light alarm prompt when the test is unexpectedly stopped.

4. A sensor online monitoring aging test device, provided with a host computer and an industrial computer, characterized in that, The system comprises a cabinet, a temperature box, a real-time data acquisition module, a test power supply, a 15-core connector, a digital multimeter, an RS232 serial module and an RS422 serial module; The host computer is connected with the industrial computer, and the industrial computer is connected with the temperature box, the real-time data acquisition module and the test power supply respectively; The test power supply, the digital multimeter, the RS232 serial module and the RS422 serial module are connected with the female head of the 15-core connector, and the male head of the 15-core connector is connected with the aging test sensor in the temperature box; The industrial computer, the host computer, the temperature box, the real-time data acquisition module, the test power supply, the digital multimeter, the RS232 serial module, the RS422 serial module are arranged in the cabinet, and the 15-core connector is arranged in the temperature box.

5. The apparatus according to claim 4, wherein The temperature box is provided with 32 sensor stations, and the 32 sensor stations are evenly divided into four groups; The temperature box is provided with four honeycomb metal plates and copper columns; The temperature box is further provided with a metal support, which is used for fixing the four honeycomb metal plates, the honeycomb metal plates are fixed on the metal support, and the honeycomb metal plates cooperate with the copper columns to fix the sensors, and one group of sensor stations is arranged on each honeycomb metal plate.

6. The apparatus according to claim 5, wherein The RS232 serial port module is specifically configured as a control element of RS232 transmission parameters, and the RS422 serial port module is specifically configured as a control element of RS422 transmission parameters; Each sensor station in the oven is provided with an RS232 serial port module and an RS422 serial port module; The number of digital multimeters is four, and one digital multimeter is shared for inspection of each group of sensor stations, and each digital multimeter can be independently set for voltage inspection or resistance inspection.

7. The apparatus according to claim 5, wherein The test power supply is specifically three-way DC power supply, and there are four sets in total, and one set of test power supply is connected in parallel with the sensor of each group of sensor stations for power supply.

8. The apparatus according to claim 4, wherein It also includes a power distribution system for obtaining power from an external power source and distributing it to each component of the sensor online monitoring aging test device; the power distribution system is arranged outside the cabinet.

9. The apparatus according to claim 4, wherein It also includes an audible and visual alarm device, which specifically includes a loudspeaker and a signal lamp, for audible and visual alarm prompt when the test is accidentally stopped; the audible and visual alarm device is arranged on the outer surface of the cabinet.

10. The apparatus according to claim 4, wherein It also includes a display screen; the display screen is fixedly arranged on the cabinet and used for displaying information and interfaces output by the upper computer. It also includes a display screen; the display screen is fixedly arranged on the cabinet and used for displaying information and interfaces output by the upper computer.

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