Onboard hard disk protection method based on tire pressure detection and system thereof

• Main Authors: ZHONG CHAO, LIN ZHIQIANG, CHEN YUAN, TANG YIMING, CHEN RUTAO
• Format: Patent
• Language: Chinese; English
• Published: 25.07.2017
• Subjects: ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE; CHECKING-DEVICES; GENERATING RANDOM NUMBERS; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS; REGISTERING OR INDICATING THE WORKING OF MACHINES; TIME OR ATTENDANCE REGISTERS; VOTING OR LOTTERY APPARATUS

The invention discloses an onboard hard disk protection method based on tire pressure detection and a system thereof. The method includes the following steps: presetting a counting safety value and a counting period; according to changes of air pressure inside the tire, acquiring an air pressure fluctuation signal; filtering the air pressure fluctuation signal to obtain air pressure fluctuation signals having high frequency and high magnitude; converting the air pressure fluctuation signals having high frequency and high magnitude to pulse signals; keeping time based on a counting period, counting the number of the pulse signals; if within the counting period, the counting number of the pulse signals is smaller than the counting safety value, outputting a signal. The method can directly represent the changes to tire pressure of vibration frequencies and magnitudes of an entire vehicle, acquires tire pressure fluctuation signals, and increases the accuracy in determining the vibration of the vehicle body; by c