Automobile tire anti-blasting early warning device based on conductive film and control method thereof
A technology of early warning device and control method, which is applied in the direction of signal device, optical observation device, tire measurement, etc., to achieve the effect of reducing the trouble of checking tires, light weight and low cost
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[0095] like Figure 12 As shown, according to the description of the above-mentioned embodiment, when it is only necessary to locate the area position information of the damaged conductive film, in this embodiment, the conductive film circuit of the present invention can be simplified into a 2×2 equivalent resistance grid matrix, the equivalent resistive grid matrix is also Figure 9 The calculation and judgment basis of the rough positioning subroutine of the damaged position stored in the single-chip microcomputer in the in-wheel detection device shown are specifically explained as follows:
[0096] Assuming that the resistance value of each equivalent resistance of the conductive film in the figure is 10Ω, and the power supply voltage is 12V, four ammeters A1, A2, A3, and A4 are connected to the places shown in the figure, and the circuit is under normal conditions. The current detected by the meter is 800mA; if the resistor R1 is disconnected, the currents detected by t...
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