用于远距离传输的电路以及生物识别装置、门禁系统

Circuit for remote transmission and biological recognition device and access control system

Abstract

本发明公开了一种用于远距离传输的电路以及生物识别装置、门禁系统,所述电路包括:电平输入端、第一电阻、第二电阻、第一开关、第二开关、第三开关和电平输出端,所述电平输入端通过第一电阻与第一开关的控制端连接,所述第一开关的第一端通过第二电阻与电源连接,所述第一开关的第二端接地,第一开关的第一端分别与第二开关和第三开关的控制端连接,第二开关的第一端与第三开关的第一端连接,第二开关的第一端连接电平输出端,第二开关的第二端接地,第三开关的第二端与电源连接。通过上述方式,解决了远距离传输电路信号驱动能力差导致的传输信号质量变形及其他问题的发生。
The invention discloses a circuit for remote transmission and a biological recognition device and access control system.The circuit comprises the electric level input end, a first resistor, a second resistor, a first switch, a second switch, a third switch and the electric level output end; the electric level input end is connected with the control end of the first switch through the first resistor, the first end of the first switch is connected with a power supply through the second resistor, the second end of the first switch is grounded, the first end of the first switch is connected with the control end of the second switch and the control end of the third switch, the first end of the second switch is connected with the first end of the third switch, the first end of the second switch is connected with the electric level output end, the second end of the second switch is grounded, and the second end of the third switch is connected with the power supply.In this way, the problem that transmitted signals generate quality deformation due to the fact that the signal driving capacity of the remote transmission circuit is poor and other problems are solved.

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