[Weighing instrument] What is the working principle of the weighing instrument, and how to remedy the failure of the weighing instrument

Weighing instrument is a kind of sensor machine equipment, which can accurately measure the force of an object according to the load borne by the inspection bearing medium. The weighing instrument can convert the pressure from the medium into a relative electronic signal, and then achieve the purpose of accurate measurement. , Weighing instrument is a machine equipment that converts quality data signals into electronic signals that can be accurately measured. So what is the working principle of the weighing instrument, and how to remedy the fault of the weighing instrument? Let's take a look now! ! What is the working principle of the weighing instrument, we must first understand what the working principle of the weighing instrument is. We need to know that the weighing instrument itself is actually a lot of products, such as car weighing instrument, airplane weighing instrument, etc., but they all One product that cannot be separated from is the load cell, which we will introduce here. The load cell consists of an elastomer with strain gauges. Elastomers are usually made of steel or aluminum and are very strong and have very little elastic deformation. As the term elastic body says, steel or aluminum deforms a certain amount under load, but then returns to the initial position and responds elastically to each load. These very small changes can be obtained with strain gauges. The deformation of the strain gauge is interpreted by the electronic instrument to determine the weight. To understand the last point, we need to explain strain gauges in more detail: they are electrical conductors that are firmly attached to the substrate in a meandering manner. When the substrate is pulled, it grows longer with the electrical conductor. When it shrinks, it becomes shorter. This will cause a change in the resistance in the electrical conductor. This is how the load cell works. Applied to the weighing instrument is the working principle of the weighing instrument. How to remedy the failure of the weighing instrument 1. Failure phenomenon: The large-screen display has not displayed normal weighing data since it is turned on. The cause of the failure: the connection method of the weighing display interface and the large screen interface is not unified. Solution: Find part of the connection interface in the manual of the weighing indicator and the large-screen description, and connect the interface correctly to normal. 2. Trouble phenomenon: The weighing indicator self-checks after it is turned on, and then displays............ crash. The cause of the fault: the green and white data lines in the junction box are connected reversely. Solution: Disconnect the power supply immediately, use the weighing display to check whether the corresponding color lines of all sensor cables and the bus are correct, that is, red to red, black to black, white to white, and green to green. No wire is touched, just reconnect. 3. Trouble phenomenon: After the weighing display is connected to the computer, there is no weighing digital display after running the weighing software. The cause of the failure: the data cable connection between the weighing display and the computer is incorrectly connected or the baud rate setting is not uniform. Solution: Find the part of the weighing display manual and the large screen description about the connection interface between the weighing display and the computer, correctly connect the interface, and then check the weighing display and the computer software baud rate setting. 4. Failure phenomenon: After the weighing display is connected to the computer, the weighing software displays garbled characters. Cause of failure: The baud rate settings of the weighing display and the weighing software are not unified. Solution: Check the baud rate set in the weighing display and computer weighing software separately, and set them uniformly. V. Failure phenomenon: After the car is off the weighing platform, a relatively large stable data is still displayed on the weighing display. The cause of the failure: the limit position of the weighing platform is stuck. Solution: Check the limit position of the weighing platform and adjust it to a reasonable position. Sixth, the fault phenomenon: the boot shows an Err error message, and the weighing display checks each sensor in the state of modifying the address, the sensor can work normally. From the 1st, the number of connected sensors is gradually increased. When a certain number of sensors are not connected, an Err error message appears on the weighing display. The above is what is the working principle of the weighing instrument, and how to remedy the fault of the weighing instrument.