Automobile driver and passenger sitting posture monitoring system
A technology for the monitoring system of drivers and passengers, which is applied to vehicle seats, vehicle parts, and special positions of vehicles, etc., can solve the problems of high cost of data acquisition system, large sensor thickness, cumbersome functions, etc. The effect of saving control ports and improving the accuracy and speed of data acquisition
Pending Publication Date: 2021-11-16
白长城
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[0004] Commonly used pressure sensors include piezoresistive and capacitive pressure sensors. Capacitive pressure sensors may have a large sensor thickness due to material and process limitations. The resistive pressure sensor places the sensitive unit on the film and uses the piezoresistive characteristics to measure the pressure. It is currently the most widely used pressure sensor. In addition, the data acquisition system supporting the pressure sensor is expensive and has cumbersome functions, so it is not suitable for use in automobiles. Pressure distribution data acquisition
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[0022] Below in conjunction with embodiment the specific embodiment of the present invention is described in further detail:
[0023] An embodiment of a sitting posture monitoring system for car drivers and passengers, according to the car seat, the headrest pressure sensor 1, the backrest film type pressure sensor array 2, the seat cushion film type pressure sensor array 3, and the seat back angle sensor 4 are arranged, such as figure 1 As shown; backrest thin film pressure sensor array 2 and seat cushion thin film pressure sensor array 3 both include 44 rows and 52 columns, a total of 2288 pressure sensing points, the sensing area is 36.4 cm long and 30.5 cm wide, and the single point sensing area The size is 5mm*5mm, which can detect the sitting pressure and back pressure of the driver and passengers with high precision. With the auxiliary pressure detection of the pressure sensor on the headrest, it can accurately detect the pressure distribution of the driver and passenger...
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The invention provides an automobile driver and passenger sitting posture monitoring system which comprises a headrest pressure sensor, a backrest film type pressure sensor array, a cushion film type pressure sensor array, a seat backrest angle sensor, a microprocessor and an upper computer. The headrest pressure sensor transmits a pressure signal to the microprocessor through the voltage division circuit, the signal conditioning circuit and the AD converter in sequence, and the seat backrest angle sensor transmits an angle signal to the microprocessor through the voltage division circuit, the signal conditioning circuit and the AD converter; the backrest film type pressure sensor array and the cushion film type pressure sensor array transmit pressure signals to the microprocessor through a signal conditioning circuit and AD conversion, and the upper computer is connected with the microprocessor. According to the invention, microprocessor control ports are saved, hardware cost and space of a data acquisition system are reduced, the system can be conveniently applied to automobile seat body pressure detection, the detected area is large, measurement is flexible and convenient, and data acquisition precision and speed are improved at the same time.
Description
technical field [0001] The invention relates to the technical field of sitting posture monitoring, in particular to a system for monitoring the sitting posture of car drivers and passengers. Background technique [0002] The pressure distribution of the driver and occupant on the seat will reflect their sitting posture, and the driver's sitting posture also reflects the driver's driving state, whether it is highly concentrated or in a relaxed state. With the rapid development of automobile automatic driving technology, driving The driving and riding methods of the occupants will also be innovated, which will be a great challenge to the design of the safety protection system for the occupants, and the sitting posture of the occupants has an important effect on the protection effect of the vehicle restraint protection system on the occupants. The recognition of its sitting posture will be the cornerstone of the design of automobile safety protection system. [0003] The tradi...
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IPC IPC(8): B60N2/00B60R16/023
CPCB60N2/002B60R16/023
Inventor 白长城
Owner 白长城