Gas sensor module aging system and method

Abstract

The invention relates to the technical field of gas sensor module aging, and provides a gas sensor module aging system and method.The gas sensor module aging system comprises a plurality of aging bottom plates, and the aging bottom plates are internally provided with a plurality of power supply voltage reduction modules and module aging plates; the power supply step-down module receives an input voltage of the aging bottom plate, and the power supply step-down module carries out step-down on the input voltage to obtain an output voltage and inputs the output voltage into the module aging plate; the module burn-in board is internally provided with a plurality of gas sensor modules which are connected in parallel, and the module burn-in board is used for aging one gas sensor module or aging a plurality of gas sensor modules at the same time after receiving the output voltage of the power supply voltage reduction module. The problems that when the gas sensor modules are aged, the gas sensor modules cannot be aged on a large scale, the aging capacity is limited, and the efficiency is low are solved, and open circuit or short circuit of a certain gas sensor module cannot affect aging of gas sensors on other modules.

Description

Technical Field

[0001] The present invention relates to the technical field of gas sensor module aging, and in particular to a gas sensor module aging system and method. Background Art

[0002] In the field of gas sensor module aging, the current mainstream technology mainly relies on a limited number of modules for aging. Although this method can meet basic testing needs to a certain extent, it has significant limitations. In existing aging solutions, such as CN117491784A, a limited number of gas sensor modules are used for testing. The test process is inefficient and cannot quickly complete the aging of large-scale modules. When faced with the aging needs of large-scale modules, the time-consuming and labor-intensive methods of the existing methods are relatively high. Summary of the invention

[0003] In view of the above-mentioned defects, the purpose of the present invention is to propose a gas sensor module aging system and method, which aims to solve the problems that the gas sensor modules cannot be aged on a large scale, the aging capacity is limited and the efficiency is low when the gas sensor modules are aged, and the open circuit or short circuit of a gas sensor module will not affect the aging of gas sensors on other modules.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A gas sensor module aging system includes a plurality of aging baseboards, wherein the aging baseboards are provided with a power supply step-down module and a plurality of module aging boards;

[0006] The power supply step-down module receives the input voltage of the aging baseboard, the power supply step-down module steps down the input voltage to obtain the output voltage, and inputs the output voltage into the parallel module aging board;

[0007] The module aging board is provided with a plurality of gas sensor modules, and the module aging board performs aging on a gas sensor module or on a plurality of gas sensor modules at the same time after receiving the output voltage of the power supply step-down module;

[0008] The gas sensor modules in the module aging board are all connected in parallel to prevent one or more gas sensor modules from affecting the aging of other gas sensor modules when one or more gas sensor modules are open-circuited or short-circuited.

[0009] Preferably, before aging a gas sensor module or a plurality of gas sensor modules at the same time, the method further includes:

[0010] Set the aging time for the gas sensor module.

[0011] Furthermore, in the aging baseboard, the aging baseboard divides the received input current to each of the power step-down modules.

[0012] A gas sensor module aging method, the gas sensor module aging method comprising the steps of:

[0013] S1: Connect several gas sensor modules to the module aging board;

[0014] S2: The power step-down module receives the input voltage of the aging baseboard;

[0015] S3: The power step-down module steps down the input voltage to obtain an output voltage, inputs the output voltage to the module aging board, and ages the gas sensor module.

[0016] Preferably, in step S3, before aging the gas sensor module, the process includes:

[0017] Set the aging time for the gas sensor module.

[0018] Preferably, in step S2, it also includes: the aging baseboard divides the external input current and inputs it to each power supply step-down module.

[0019] One of the above technical solutions has the following advantages or beneficial effects:

[0020] By increasing the number of module aging boards and the number of gas sensor module connections, up to M×N gas sensor modules can be aged simultaneously to meet the needs of large-scale production and testing. The power step-down module and module aging board are integrated into the same aging baseboard to ensure the uniformity and repeatability of the aging results. The use of a unified gas sensor module and aging baseboard ensures the standardization and normalization of the aging process, and the open circuit or short circuit of a gas sensor module will not affect the aging of gas sensors on other modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of an aging base plate of a gas sensor module aging system provided in an embodiment of the present invention;

[0023] Figure 2It is a schematic diagram of the aging process of the gas sensor module aging method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the present invention, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0026] A preferred embodiment of the present invention is a gas sensor module aging system, comprising a plurality of aging baseboards, wherein the aging baseboards are provided with a power supply step-down module 1 and a plurality of module aging boards 2;

[0027] The power supply step-down module 1 receives the input voltage of the aging baseboard, the power supply step-down module 1 steps down the input voltage to obtain an output voltage, and inputs the output voltage into the parallel module aging board 2;

[0028] The module aging board 2 is provided with a plurality of gas sensor modules connected in parallel. After receiving the output voltage of the power step-down module 1 , the module aging board 2 ages one gas sensor module or multiple gas sensor modules at the same time.

[0029] like Figure 1As shown, the structural schematic diagram of the aging baseboard of the gas sensor module aging system, the aging baseboard is the basic board of the whole system, which is used to receive and shunt the input power, and provide power support for the subsequent power buck module 1 and module aging board 2. The power buck module 1 and the module aging board 2 are one-to-one corresponding, and each power buck module 1 includes a power buck chip, which is used to reduce the input voltage to a suitable working voltage for the module aging board 2 and the gas sensor module. The power buck chip can be a switching regulator or a buck converter, which is used to realize the conversion of input voltage to a lower output voltage. Convert the high voltage input into a stable low voltage output, supply the module aging board 2 and the gas sensor module, for example, the input voltage is 12V, and after being processed by the power buck module 1, the voltage reaching the module aging board 2 is 5V, which is more in line with the use requirements. There can be multiple power buck modules 1 and module aging boards 2 in the aging baseboard, which provide the system with regulation for aging multiple gas sensor modules at the same time. The module aging board 2 is responsible for managing and executing the aging process of the gas sensor module. After obtaining a certain voltage and current input, and the current and voltage meet the hardware requirements, the gas sensor module is used to detect and measure the presence and concentration of specific gases to evaluate its reliability and durability. If a device in the present invention is short-circuited, it will not interfere with the aging power of other devices. All gas sensor modules in the system are connected in parallel, and each module has a constant power characteristic, thereby ensuring that the short circuit or other failure of a single device will not have any adverse effects on other devices in the system. For example, when the system is working, it is known that the basic power consumption of each module is about 200mW. Since the aging power requirements of different types of devices are different, but the power supply power always has redundant space, the total power will not be affected. In actual applications, when a single aging baseboard is working, when the number of gas sensor modules is When the number of gas sensor modules is 64, since the gas sensor modules are connected in parallel, the power supply voltage used is reserved to be 12V, the power supply current is reserved to be 2.5A, and the total power provided is 30W; when 16 aging boards are working at the same time and the number of gas sensor modules is 64, the power supply voltage used is reserved to be 12V, the power supply current is 40A, and the total power provided is 480W. Therefore, the parallel connection and constant power characteristics of each gas sensor module ensure that even if a module is disconnected or fails, other modules in the system are not affected and can still work normally. Multiple gas sensor modules and multiple aging boards can remain stable when working at the same time. Multiple gas sensor modules can be connected to the module aging board 2, and multiple gas sensor modules can be aged at the same time. Through long-term aging, problems that may occur in the sensor module during long-term use, such as drift, sensitivity changes, etc., can be discovered, thereby improving the stability and reliability of the product.

[0030] Among them, the present invention can realize multiple aging base plates working at the same time, and then age multiple gas sensor modules at the same time, which greatly improves the aging efficiency of the gas sensor modules.

[0031] Preferably, before aging a gas sensor module or a plurality of gas sensor modules at the same time, the method further includes:

[0032] Set the aging time for the gas sensor module.

[0033] Specifically, the aging time setting of the gas sensor module can improve the crystal structure. The aging treatment can help eliminate the stress and defects inside the material, promote the integrity and uniformity of the crystal structure, and improve the electrical performance: through annealing, the carrier concentration and mobility can be optimized, thereby improving the conductivity of the material and the efficiency of the electron or hole transport layer; it can also promote the formation of oxygen vacancies. Therefore, it is necessary to set the aging time before aging a gas sensor module or multiple gas sensor modules at the same time, so as to obtain stable gas sensor characteristic performance.

[0034] Furthermore, in the aging baseboard, the aging baseboard divides the received input current to each of the power step-down modules 1 .

[0035] Specifically, if the aging power consumption of each gas sensor module is approximately 170mw and the aging voltage is 3.4V, the current value required for each gas sensor module can be calculated. Assuming that the number of gas sensor modules is 64, and considering that the system has other circuits or parts that need to share the total input power, the input current of the module aging board 2 when aging the gas sensor module is set to at least 4A. When the current is too small, it will affect the voltage of the gas sensor module and fail to reach the ideal voltage, resulting in poor aging effect. Therefore, the input current is shunted to each of the power supply step-down modules 1 on the aging baseboard to ensure the normal operation of the gas sensor module without affecting the aging efficiency.

[0036] like Figure 2 As shown, a gas sensor module aging method is applied to a gas sensor module aging system as described above, and the gas sensor module aging method comprises the steps of:

[0037] S1: Connect several gas sensor modules to the module aging board;

[0038] S2: The power step-down module receives the input voltage of the aging baseboard;

[0039] S3: The power step-down module steps down the input voltage to obtain an output voltage, inputs the output voltage to the module aging board, and ages the gas sensor module.

[0040] Preferably, in step S3, before aging the gas sensor module, the process includes:

[0041] Set the aging time for the gas sensor module.

[0042] Preferably, in step S2, it also includes: the aging baseboard divides the external input current and inputs it to each power supply step-down module.

[0043] This embodiment implements the gas sensor module aging method and implementation process. Please refer to the above embodiments and will not be described in detail here.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0045] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gas sensor module aging system, characterized in that: It includes several aging baseboards, wherein the aging baseboards are provided with a power supply step-down module and several module aging boards; The power supply step-down module receives the input voltage of the aging baseboard, the power supply step-down module steps down the input voltage to obtain the output voltage, and inputs the output voltage into the parallel module aging board; The module aging board is provided with a plurality of gas sensor modules, and the module aging board performs aging on a gas sensor module or on a plurality of gas sensor modules at the same time after receiving the output voltage of the power supply step-down module; The gas sensor modules in the module aging board are all connected in parallel to prevent one or more gas sensor modules from affecting the aging of other gas sensor modules when one or more gas sensor modules are open-circuited or short-circuited.

2. The gas sensor module aging system according to claim 1, characterized in that: Before aging a gas sensor module or a plurality of gas sensor modules at the same time, the following steps are also included: Set the aging time for the gas sensor module.

3. The gas sensor module aging system according to claim 1, characterized in that: In the aging baseboard, the aging baseboard divides the received input current to each of the power step-down modules.

4. A gas sensor module aging method, characterized in that: Applied to a gas sensor module aging system as claimed in any one of claims 1 to 3, the gas sensor module aging method comprises the steps of: S1: Connect several gas sensor modules to the module aging board; S2: The power step-down module receives the input voltage of the aging baseboard; S3: The power step-down module steps down the input voltage to obtain an output voltage, inputs the output voltage to the module aging board, and ages the gas sensor module.

5. The gas sensor module aging method according to claim 4, characterized in that: In step S3, before aging the gas sensor module, the following steps are performed: Set the aging time for the gas sensor module.

6. The gas sensor module aging method according to claim 4, characterized in that: In step S2, it also includes: the aging baseboard divides the external input current and inputs it to each power supply step-down module.

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