Development Technology and Sensitivity of Metal Detector
kenweigh intelligence: the development technology of metal detector and its sensitivity. The metal detector is a production equipment for detecting metal impurity fragments in industrial materials. The simplest metal detector consists of two parts, that is, it is used for conveying the industrial It consists of the mechanical conveying part (conveyor) of the material and the electronic detection part (gold detection head) that detects metal impurities in the material. The sensitivity of metal detectors is mainly determined by the following factors: opening size, operating frequency, product effects and environmental interference. 1. The smaller the opening size, the higher the sensitivity of the probe. Second, the higher the operating frequency, the higher the sensitivity. 3. The product itself will also generate a corresponding signal in the detector coil, which is called the product effect. The composition, temperature, and moisture content of food all have an impact on the metal detection process. This is because conductive products have a strong impact on the current of the metal detector coil. The temperature of the product will also affect the performance of the detector. The sensitivity of the metal detector to detect the thawed product and the unthawed product is different. External electrical signals and mechanical vibrations from the surrounding area will also affect the sensitivity of the metal detector, resulting in false alarms. Digital metal detectors with automatic product tracking can overcome these problems. The easiest way to develop a metal detector is to directly select the finished metal detector and develop mechanical conveying and other ancillary facilities. The advantage of this is that 1, the investment is small. 2. The development cycle is short. 3. High product maturity. Machinery companies usually use this method when developing new products. First, briefly explain the working principle of the gold detection head. In a space (detection point), a coil is used to generate an alternating magnetic field, and the coils on both sides are used to induce the magnetic field. When there is no metal object passing through the space, the induced voltage difference between the two coils remains unchanged. When passing through the space, the induced voltage difference between the coils on both sides changes, and the purpose of detecting metal foreign objects can be achieved by detecting this change. When using the gold inspection head, you must know some of its characteristics: 1. There is an alternating magnetic field in the surrounding space of the gold inspection head. 2. The change of the magnetic field around the gold detection head can be equivalent to the change of the magnetic field in the detection channel.
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