Why is there a "villain squatting pit" on the dashboard?

It's not the pattern of a villain going to the toilet at all, but the temperature display, which shows MINUS four degrees. It is because the distance is too close that people will misunderstand that it is a pattern of a villain going to the toilet. It is really imaginative. Automobile dashboard is a device that reflects the working condition of each system of the vehicle. Common ones are fuel indicator lamp, cleaning liquid indicator lamp, electronic throttle indicator lamp, front and rear fog lamp indicator lamp and alarm lamp.

All kinds of indicator lights or warning lights are made under the mask of modern automobile dashboard, such as coolant level warning light, fuel quantity warning light, washer level indicator light, charging indicator light, far and near light change indicator light, transmission gear indicator light, brake anti-lock braking system (ABS) indicator light, driving force control indicator light, airbag (SRS) warning light, etc. The speedometer actually consists of two meters. One is the speedometer and the other is the odometer.

The traditional speedometer is mechanical. A typical mechanical odometer is connected to a flexible shaft. There is a wire rope in the flexible shaft. The other end of that flexible shaft is connecte to a gear of the transmission. The rotation of the gear drives the wire rope to rotate. The steel cable drives the magnet in the odometer cover to rotate. The cover ring is connected with the pointer, and the pointer is zeroed by the hairspring. The rotation speed of the magnet causes the change of magnetic field lines. The balance is broken and the pointer is driven. This speedometer is simple and practical. Widely used in large and small cars. However, with the development of electronic technology. At present, many automobile instruments have used electronic speedometer. The common one is to get the signal from the speed sensor on the transmission, and deflect the pointer or display the number through the change of pulse frequency.

The odometer is a kind of digital instrument. The transmission gear of the counter drum meshes with the worm on the transmission shaft of the speedometer to make the counter drum rotate. Characterized in that the drum at the previous stage rotates for a whole circle. The next drum is110. Like speedometers, odometers now have electronic odometers, which get mileage signals from speed sensors. The mileage figures accumulated by the electronic odometer are stored in the nonvolatile memory, and the status data can be saved even when there is no electricity.