A detection method for quickly identifying the category of low-voltage electrical appliances
A technology of low-voltage electrical appliances and detection methods, applied in the electrical field, can solve the problems of difficult detection by traditional methods and inability to distinguish the types of devices
Active Publication Date: 2022-02-11
CHINA RAILWAY TUNNEL GROUP CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to propose a detection method for quickly identifying the type of low-voltage electrical appliances, so that it can effectively solve the technical problems that the type of the device cannot be distinguished due to the nameplate falling off of the contactor and the relay, and the traditional method is difficult to detect.
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[0013] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.
[0014] Such as figure 1 As shown, the low-voltage electrical appliance detection method of the present invention, wherein the infrared thermal sensor adopts the infrared thermal sensor of the model Sobo SM8700, the signal generator is the signal generator of the Puyuan DG1022Z model, and the amplitude detector is the Delixi JD36 model ; Amplifying circuit such as figure 2 As shown, it is divided into three stages, the first stage adopts a common-collector amplifier circuit, the second stage adopts a common-emitter amplifier circuit, and the third ...
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The invention belongs to the field of electrical technology, and in particular relates to a detection method for quickly identifying the category of low-voltage electrical appliances. A proposed AC / DC detection method for low-voltage electrical appliances is as follows: an adjustable signal generator is used to actively send a detection signal of a certain frequency, and according to the different responses of different types of low-voltage electrical appliances to the detection signal, the infrared thermal sensor is used to collect the response signal. After amplifying and filtering the collected signal, the processed signal is passed to the amplitude discriminator, and the identification signal of the output terminal is used to complete the identification of the voltage properties of the contactor and the relay. The invention proposes a detection method for quickly identifying the category of low-voltage electrical appliances. Through the design of the above-mentioned technical scheme, the adjustable signal generator is used to actively send out signals to make the low-voltage electrical appliances to be tested generate heat. , to detect the category of low-voltage electrical appliances, which is simple, convenient and fast.
Description
technical field [0001] The invention belongs to the field of electrical technology, and in particular relates to a detection method for quickly identifying the category of low-voltage electrical appliances. Background technique [0002] Contactors and relays are the most commonly used devices in industrial control, and they are used in large quantities; contactors and relays are divided into two types: DC and AC. At present, the detection technology is relatively mature, and the corresponding detection is mainly based on the type of device; but in many cases, there are device nameplates Falling off, or the nameplate is blurred due to the harsh working environment, and it is impossible to quickly distinguish the detection of contactors or relays, and the appearance of devices with different voltage properties is often difficult to distinguish. If the wrong detection method is adopted, the device will be damaged. Therefore, It is necessary to invent a method to quickly identif...
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IPC IPC(8): G01R31/327
CPCG01R31/3277G01R31/3278
Inventor 何建平王春晓姜永成刘作威朱世伟张阐娟葛宜元李怀李凤远牛国玲孟泽民陈鑫鑫
Owner CHINA RAILWAY TUNNEL GROUP CO LTD