| 摘要 |
According to present invention a indicator consists of a power filter means(1) preventing the momentary surge voltage or overvoltage when the power is on, a voltage stability means(2) supplying a stable power to an indicator, the first filter means(3) removing the noise element of input signal from a sensor(18), a wave shaping means(4) digitalizing the signal via the first filter means(3), the second filter means(5) removing the noise element of input signal from encoder, a buffer means(6) buffering the output signal from the second filter means(5), a choice switch(7) choosing the output of encoder and the output of the wave shaping means(4), a micom(8) generally controlling the operation of each circuit means, a reset means(9) resetting the micom(8) to early state, a voltage limit means(10) limiting the direct current voltage of brake, 12V, to regular voltage(5V), a function choosing key(11) inputting a chosen signal to the micom(8), a direct current/ direct current changing means(12) controlling the light of filament of the head up indicator(14), an indicating driving means(13) displaying the determined data, a head up indicator(14) indicating the speed on the front of glass, an indicator of car speed(15) indicating the speed of the automobile, an indicator of deceleration(17) indicating the deceleration of the automobile, a sensor(18) detecting the speed of the automobile, an interface means(19) communicating the PC.
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