A method for automatically positioning and energy-saving for tire pressure detection sensors, the steps of the method comprising:
- a driving/parking mode determination step:
- A plurality of tire pressure detection sensors located within a plurality of tires of a vehicle detecting movement of each tire, wherein each tire pressure detection sensor has a built-in acceleration unit to detect movement of each tire, each tire pressure detection sensor has a built-in driving threshold value, a parking threshold value, a movement threshold value, and a movement variation interval value located between the parking threshold value and the movement threshold value, wherein when a value detected by the acceleration unit of each tire pressure detection sensor is greater than the driving threshold value, a driving mode is defined, when a value detected by the acceleration unit of each tire pressure detection sensor is less than the parking threshold value, a parking mode is defined;
- a first parking advanced determination step:
- When each tire pressure detection sensor enters the parking mode, each tire begins to perform actions, the acceleration unit of each tire pressure detection sensor activates detection, when a value detected by each acceleration unit is compared with the movement threshold value and the movement variation interval value, when the value of each acceleration unit is greater than the movement threshold value and exceed the movement variation interval value, a counting unit built in each tire pressure detection sensor determines that each tire is moving and performs cumulative counting, when the value of each acceleration unit is less than the movement threshold value or does not exceed the movement variation interval value, the counting unit within each tire pressure detection sensor does not perform cumulative counting and returns to each acceleration unit of each tire pressure detection sensor to continue detection;
- a second parking advanced determination step:
- In the first parking advanced determination step, after the counting unit within each tire pressure detection sensor begins cumulative operation, the value detected by each acceleration unit is compared with the driving threshold value, when the value detected by each acceleration unit is greater than the driving threshold value, each tire pressure detection sensor transmits accumulated data from each counting unit to a host of the vehicle, when the value detected by each acceleration unit is less than the driving threshold value, each acceleration unit continues detection;
- a message transmission comparison step:
- Following the above steps, after the host receives the accumulated data transmitted by each tire pressure detection sensor, the accumulated data is compared with an automatic positioning threshold value built in the host, when the accumulated data is less than the automatic positioning threshold value, the host does not perform automatic positioning with each tire pressure detection sensor, when the accumulated data is greater than the automatic positioning threshold value, automatic positioning is performed between the host and each tire pressure detection sensor, and
- a data reset step:
- Following the above steps, the accumulated data of the counting unit of each tire pressure detection sensor is reset to zero, so as to facilitate the next re-execution of the driving/parking mode determination step.