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A method and system capable of detecting whether an automobile tire is leaking in a static state
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A technology for automobile tires and static state, which is applied in tire measurement, tire parts, vehicle parts, etc., and can solve problems such as failure to issue alarms
Active Publication Date: 2020-07-28
HUIZHOU DESAY SV AUTOMOTIVE
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There is a defect like this, that is, when the vehicle is placed in the garage at night, if the tire leaks, because the tire pressure monitoring system is in a dormant state, the alarm cannot be issued, and the driver cannot find out that the tire has leaked in time before driving the next morning. You will only receive an alert from the tire pressure monitoring system when the vehicle speed is greater than 25 kilometers per hour, and the vehicle may already be on the road at this time
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Embodiment 1
[0036] A system that can detect whether a car tire is leaking in a static state, applied to an inertial navigation vehicle, such as figure 1 Shown: including a central processing unit, a satellite signal receiving module connected to the central processing unit, a memory, a display unit, an accelerometer, a gyroscope, an audio signal processing unit, and an audio signal output unit connected to the audio signal processing unit; wherein, The audio signal output unit includes an audio signal amplifier and a loudspeaker connected with the audio signal amplifier.
[0037] In the present invention,
[0038] The satellite signal receiving module is used to obtain the data and information required for vehicle navigation and positioning and send them to the central processing unit.
[0039] The accelerometer is connected with the central processing unit through the SPI bus to transmit acceleration information to the central processing unit.
[0040] The gyroscope is connected with t...
Embodiment 2
[0045] A method that can detect whether a car tire is leaking in a stationary state, such as figure 2 Shown: including the following steps:
[0046] S10. Judgment of vehicle stop state: detect whether the power supply of the vehicle navigation host is off, if so, judge that the vehicle is in a stop state, at this time, the vehicle navigation host is in a normal working state and then shut down for a certain period of time, otherwise, the vehicle is in a non-stop state .
[0047]In this step: after it is determined that the vehicle is in a stopped state, the vehicle navigation host is powered by its battery and is in a normal working state. Therefore, the time it is in a normal working state is determined according to the capacity of its battery. In this field, after the power is turned off, The accumulator can generally be the power supply time of the vehicle navigation host for more than 1 hour. In the present invention, in order to ensure that the battery has enough power ...
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Abstract
The invention relates to a method and system for detecting whether an automobile tire is leaking in a stationary state. The method includes the steps: obtaining a first initial tilt angle and first tilt angles in a preset time period by a gyroscope when a vehicle is in a stationary state, and obtaining a second initial tilt angle when the vehicle is in a stationary state and a second tilt angle after the vehicle is started by an accelerometer; respectively subtracting the continuously obtained plurality of first tilt angles by the first initial tilt angle, and when the calculation result is greater than a preset first angle threshold, determining that the tire of the vehicle is in a rapid air leakage state; and subtracting the second tilt angle by the second initial tilt angle, and when the calculation result is greater than a preset second angle threshold, determining that the tire of the vehicle is in a slow air leak state. The method for detecting whether an automobile tire is leaking is in a stationary state calculates the tilt angle change of the tire when the vehicle is stopped by the gyroscope and the accelerometer, thereby monitoring whether the tire of the vehicle has airleakage, so that the driver knows the state of the tire of the vehicle when the vehicle is started, without influencing the normal use of the vehicle.
Description
technical field [0001] The invention relates to the technical field of tire air leakage detection, in particular to a method and system capable of detecting whether an automobile tire is air leaked in a stationary state. Background technique [0002] With the development of tire pressure monitoring technology, many vehicles are equipped with tire pressure monitoring systems. However, disposable battery power supply is the shortcoming of the TPMS. In order to prolong the life of the TPMS, the power-saving power management strategy is usually to turn on the TPMS when the vehicle is stationary or the vehicle speed is less than 25 kilometers per hour. Hibernate to save power. There is a defect like this, that is, when the vehicle is placed in the garage at night, if the tire leaks, because the tire pressure monitoring system is in a dormant state, the alarm cannot be issued, and the driver cannot find out that the tire has leaked in time before driving the next morning. You wi...
Claims
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Application Information
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