What is a portable car weighing instrument? What are their roles?
The portable car weighing instrument, also known as the portable car axle tenon weighing instrument, is mainly used in the automobile industry and the motor vehicle inspection industry. According to the dynamics of the car or the static on the surface of a certain total width of the weighing platform , Weigh the net weight of each wheel by the weighing platform, and then accumulate the axle weight of the car and its whole weight, so as to distinguish the reliability of automobile technology and other aspects according to certain specifications. It is one of the common special tools for metrological verification specifications in the automotive industry and motor vehicle inspection industry! STW-18 portable car weighing instrument construction parts are generally divided into four parts, namely, weighing platform, cable TV dashboard, mobile phone charging cable and standard accessories. Among them, the weighing platform is generally 4 yuan, which matches the four wheels of the car; the cable TV dashboard is generally 1; the mobile phone charging cable is generally 4, connected to the four major scales; the standard accessories generally include an approach bridge , Charging head, copy paper, printing ribbon, etc. Among the most important structures are the weighing platform and the sensor, the principle of which is worth studying! The weighing principle of the portable car weighing instrument is as follows: when the tire pressure is released to the weighing platform, the weighing platform sensor will release the working voltage data signal, and the size of the output data signal is positively correlated with the net weight of the tire. After the signal is transmitted to the amplifier to increase its size, it is transformed into a data signal by an analog-to-digital converter to display information on the display. The single board obtains the wheel weight value of the car, and the two boards are the axle load. According to the axle type of the car, the total weight of the car can be accumulated. The principle of the weight sensor of the portable car weighing instrument is as follows: when the weighing platform is deformed by force, it will change the resistance of the resistor strain gauge in the sensor, and then change the output of the data signal. There are two types of sensors for weighing platform sensors, namely the built-in structure sensor and the integrated structure sensor. At this stage, the embedded structure sensor is more popular in the sales market. The built-in structure sensor is relatively more resistant to pressure and more precise than the previous integrated sensor. The principle and function of the dashboard is mainly to receive sensor data signals, and carry out calculations and analysis of data signals, and convert them into visualized standard value display information! After the detailed introduction, everyone has learned that the portable car weighing instrument is indeed an indispensable special tool for the automotive industry and inspection workers, but is it suitable for all scenarios? This is not the case. The application of the portable car weighing instrument actually has many matters that must be paid attention to: 1. The sensor and the portable car weighing instrument must be reliably connected to prevent strong electrostatic fields, magnetic fields, sensors and carrying Type car weighing instrument should put an end to strongly corrosive objects, and put an end to flammable and explosive objects. 2. Do not apply in places with flammable gas or flammable vapor. 3. In areas where lightning strikes frequently occur, reliable high-voltage arresters must be installed to ensure the safety of operating personnel and avoid damage to the portable car weighing instrument and relative machinery and equipment due to lightning strikes. 4. Sensors and portable car weighing instruments are all electrostatic induction sensitive machines and equipment. In the application, it is necessary to further adopt anti-static measures. It is forbidden to carry out the actual operation of arc welding or other strong electrostatic field operations on the weighing platform; During the season, we must implement reliable lightning protection countermeasures to avoid the destruction of sensors and portable car weighing instruments due to lightning strikes, to ensure the safety of operating staff and the safe operation of weighing systems and related machinery and equipment. 5. Before plugging in the portable car weighing instrument and peripheral equipment, be sure to disconnect the portable car weighing instrument and the switching power supply of the relative machinery and equipment! Before plugging in the sensor cable, be sure to disconnect the portable car weighing instrument's switching power supply (standby)! Before plugging in the communication cable, be sure to disconnect the portable car weighing instrument and the upper computer software switching power supply!
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