基于对数显示驱动电路的汽车电瓶健康检测仪

Automobile Battery Health Detector Based on Logarithmic Display Driving Circuit

利用对数刻度显示驱动电路检测汽车电瓶电压信号,在电路内部具有10个电压比较电路,将基准电压与蓄电池采样电压进行比较。当基准电压大于蓄电池采样电压时LED不发光,当基准电压小于采样电压时LED发光。10个共阳极LED可以显示10.5V^15V蓄电池电压,灵敏度为0.5V,发光二极管正极电压由点烟器插座提供。检测仪可以完美解决蓄电池的健康诊断问题,且由驾驶者独立操作,完全不需要第三者帮助。

Using the logarithmic scale display drive circuit to detect the voltage signal of the car battery,there are 10 voltage comparison circuits inside the circuit,and the reference voltage is compared with the sample voltage of the battery.When the reference voltage is larger than the battery sampling voltage,LED does not shine;on the other hand,when the sampling voltage is larger than the reference voltage,the LED luminescence and the 10 common anode LED can display the battery voltage of the 10.5 Vto 15 V.The sensitivity is 0.5 V,and the positive voltage of the LED is provided by the cigar lighter socket.The detector can perfectly solve the problem of battery health diagnosis,and the driver′s independent operation does not need third help at all.