Views: 84 Author: Site Editor Publish Time: 2020-04-15 Origin: Site
For bicycle tires, it can be easily judged the condition of their tires. However, cars usually use tire pressure sensor to monitor whether the tire pressure is qualified and whether the tire leaks. The following is about how to change the battery for built-in tire pressure sensor.
First of all, introduce what is tire pressure monitor system. The tire pressure monitoring system can monitor whether the tire pressure of the vehicle conforms to the standard of the vehicle at any time. For the repair technician, the tire pressure can be used to monitor whether the tire pressure is qualified. The owner can remind the auto repair technician to help them adjust the tire pressure through the tire pressure display. For the auto repair technician, another function is that the technician can judge whether the tire leaks by observing the air pressure of the tire, so as to remind the owner to pay attention when driving and advise the owner to repair the tire.
For the built-in tire pressure monitoring system, the most obvious point of this kind of tire pressure monitoring is that it can directly separately monitor the tire pressure of one tire and display it on the display screen in figures. The driver can directly see the tire pressure whether it is too high or too low on the display screen, which is also convenient for maintenance. At the same time, when the tire pressure is too low, the car will give an alarm to remind the owner to pay attention to driving.
The principle is that each sensor is built-in near the tire valve, and the original sensor is basically all made with valve. It is powered by a separate battery, which wirelessly transmits each measured tire pressure value to the receiver, and then displays it on the display screen.
Find a familiar tire shop first, take out the tire and remove the built-in sensor. Note that it is not necessary to remove the tire, and just press down the side of the tire to remove the sensor. For waterproof and shockproof, the sensor seals the circuit and battery with silica gel.
Cut along the edge of the silica gel carefully with an art knife, and tear off the silica gel one small piece after one small piece carefully and slowly with the art knife, then the whole sensor will be exposed. The internal structure of the sensor is composed of an integrated circuit board and a button battery.
First of all, Take down the old battery. This thing is tightly clamped, and its position is very limited. It needs to be operated very carefully. After removing the old battery, it is observed that the battery model is CR2450 and the voltage is 3V. CR2450 battery is not very commonly used, and it is not a very conventional battery, so it is necessary to travel to E-city to buy it. The retail price is about 7 yuan.
The original method of this battery is to weld the contact piece with hot air gun, welding table, welding tools and so on, so that no matter how the vibration is, it will not shake off. Generally, the battery can be welded in 2 minutes. In this way, after the first sensor is welded, the replacement cost of the other three sensors will also be greatly reduced. Therefore, the replacement cost of the sensors can be saved to a large extent.
The next work of battery test is to seal the silica gel. Silica gel seal, in fact, is not as mysterious as people usually think. Silica gel is the glass glue that people often use at ordinary times. It is generally divided into structural glue and sealant according to its usage. Structural glue is more sticky, for example, sticking front window glass. The structural force of sealant is a little bit poor, and it is often applied to seal the aluminum alloy window frame.
Whether the tire pressure sensor can work normally depends on the battery, and the battery replacement depends on the execution of each step of our operation. Every link must be closely linked to ensure its normal operation.
