JPH0477355U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the functional configuration of a fatigue warning display device for a vehicle seat according to an embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view of a vehicle seat equipped with the same device, and FIG. FIG. 4 is a cross-sectional view of the seat cushion of the same seat, FIG. 4 is a perspective view of the same seat, and FIG. 5 is a flowchart of a program of a microcomputer constituting the fatigue warning device. Explanation of symbols, 1...First sensor, 2...Second sensor, 3...Third sensor, 4...Position change detection means, 5...Control means, 6...Liquid crystal display, 7...Warning lamp.

Claims (1)

[Scope of utility model registration request] a first pressure sensor that detects pressure applied to the buttocks of the occupant from the seat cushion of the vehicle seat; a second pressure sensor that detects pressure applied to the buttocks of the occupant from the seat back of the vehicle seat; a third pressure sensor that detects pressure applied to the back; a pressure detected by the first pressure sensor and a preset first reference pressure range; a pressure detected by the second pressure sensor and a preset second reference pressure; and a posture of comparing the pressure detected by the third left and right sensors with a preset third reference pressure range and outputting a count signal when at least one of the three pressures is outside the compared reference pressure range. a change detection means, a control means having a counter for counting the count signal, comparing the counted value with a preset reference value and outputting a control signal when the counted value exceeds the reference value, and based on the control signal. What is claimed is: 1. A fatigue warning display device for a vehicle seat, comprising a warning display means that is driven and controlled by the driver.