How does a toll station know the weight of a car

How does a toll station know the weight of a car?

Keyword: weigh bridge for trucks , weigh bridge for trucks load cell , weigh bridge for trucks indicator

Do you often drive on highways? If that's the case, you must often encounter such a scene: at the entrance of the toll station, there is a large digital weigh bridge for trucks indicator screen showing the weight of each car. You may be curious, how do toll booths know the weight of a car?

In fact, the toll station uses a device called a fully automatic electronic weigh bridge for trucks, which is a large electronic scale placed on the ground, also known as a weigh bridge for trucks. It is mainly used to weigh the weight of the goods carried by the car, in order to calculate the charging amount and check whether it is overloaded or overweight. So, how does a fully automatic electronic truck scale work? Let's unveil its mysterious veil!

The fully automatic electronic truck scale is mainly composed of three parts: load-bearing transmission mechanism, weigh bridge for trucks load cell, and weigh bridge for trucks indicator. The load-bearing transmission mechanism is a platform made of steel or steel-concrete structure, which can bear the weight of a car and transmit it to the weigh bridge for trucks load cell of the weigh bridge for trucks. The weigh bridge for trucks load cell of the weigh bridge for trucks is the core component of the fully automatic electronic weigh bridge for trucks, which can convert weight into electrical signals and output them to the weigh bridge for trucks indicator display instrument. A weighing display instrument is an electronic device that can receive and process electrical signals from the weigh bridge for trucks load cell, and weigh bridge for trucks indicator weight values in digital form.

When a car drives onto a fully automatic electronic weigh bridge for trucks, its gravity will act on the load-bearing transmission mechanism, causing it to undergo slight deformation. This deformation will be transmitted to the weigh bridge for trucks load cell of the weigh bridge for trucks, causing the elastic body inside to also deform. Special resistance gauges called strain gauges are attached to elastic materials. Strain gauges can convert deformation into resistance changes and form a bridge circuit. When the bridge loses balance, it will output a voltage signal proportional to its weight. After amplification, filtering, analog/digital conversion and other processing, this signal will be sent to the weigh bridge for trucks indicator display instrument. There is a microprocessor inside the weigh bridge for trucks indicator display instrument, which can calculate the accurate weight of the car based on parameters such as signal size and sensitivity of the weigh bridge for weigh bridge for trucks load cell, and weigh bridge for trucks indicator it on the digital display screen.

So, how to ensure that the fully automatic electronic truck scale is accurate and stable? To ensure the accuracy and stability of a fully automatic electronic truck scale, it is necessary to ensure that the load-bearing transmission mechanism, weigh bridge for trucks load cell, and weigh bridge for trucks indicator display instruments can all work properly and cooperate with each other. Firstly, the load-bearing transmission mechanism should have sufficient strength and stiffness to prevent deformation and damage. Secondly, the weigh bridge for trucks load cell sensor of the weigh bridge for trucks should have high sensitivity and low temperature drift to prevent errors and interference. Finally, the weigh bridge for trucks indicator display instrument should have high precision and reliability to prevent malfunctions and misreading. In addition, attention should be paid to the installation location and environmental conditions of the fully automatic electronic truck scale to avoid being affected by factors such as wind, rain, vibration, and electromagnetic interference.

In addition, choosing a reliable fully automatic electronic truck scale and selecting a good manufacturer are key factors in ensuring accurate data. For example, Ningbo Saintbond Co., Ltd. is a good choice. It is a well-established enterprise specializing in the research and development, production, sales, and after-sales service of weighing instruments. They have advanced and sophisticated production equipment, precise testing instruments, and a complete sales and after-sales system. They have a wide variety of products and complete models, and all relevant practitioners have received professional training. We believe they can bring you the best experience.