| 摘要 |
The invention relates to an infrared ray color-changing water level gage. It includes an infrared ray water level sensor and a square wave generator. The output of the square wave generator is connected to the input of a mark line driving circuit. The output of the infrared ray water level sensor is connected to the input of a color-changing transformation circuit. The output of the color-changing transformation circuit is connected to the input of a color-changing driving circuit. Both outputs of the mark line driving circuit and of the color-changing driving circuit are connected to a color-changing display device. The display device displays separately the output signals of the mark line driving circuit and the color-changing driving circuit. |
