Insertion detection circuit and electronic device
A technology for detecting circuits and circuits. It is applied in the direction of measuring electricity, measuring electrical variables, and measuring devices. It can solve problems such as potential safety hazards, reduce port levels, and port corrosion, and achieve the effect of avoiding potential safety hazards.
Pending Publication Date: 2021-06-04
VIVO MOBILE COMM CO LTD
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Problems solved by technology
[0005] The embodiment of the present application provides an insertion detection circuit and electronic equipment, which can solve the problem that the port may be corroded when foreign matter or water enters the port due to the high level of the port, and there is no need to increase the circuit design. Complexity can reduce port level
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[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0018] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein. In addition, "and / or" in the specification an...
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The invention discloses an insertion detection circuit and electronic equipment, and belongs to the field of electronic equipment. The insertion detection circuit comprises a first resistor, a first element and a second element, wherein the first end of the first resistor is connected with the power supply terminal, and the second end of the first resistor is connected with the first end of the first element and the GPIO of the controller; the second end of the first element is respectively connected with the first end of the second element and the input port; the second end of the second element is grounded; under the condition that the external equipment is inserted, the input port is grounded, and the voltage of the GPIO of the controller is the voltage of the first element; under the condition that the external equipment is not inserted, the input port is suspended, the suspension voltage is the voltage of the second element, and the voltage of the GPIO of the controller is the sum of the voltage of the first element and the voltage of the second element. By controlling the resistance value of the first resistor and the types and voltage division values of the first element and the second element, the voltage of the input port can be reduced, and potential safety hazards are avoided.
Description
technical field [0001] The application belongs to the field of electronic equipment, and in particular relates to an insertion detection circuit and electronic equipment. Background technique [0002] Current insertion detection solutions are mainly general-purpose input / output (GPIO) insertion detection solutions, dedicated IO insertion detection solutions, or comparator insertion detection solutions. [0003] However, the level of GPIO and dedicated IO is relatively high. If foreign matter or water enters the port, the port may be corroded and pose a safety hazard. [0004] In the comparator insertion detection scheme, a comparator is added in the front stage to reduce the open circuit voltage of the insertion detection, so that in the case of foreign matter or water entering the port, the degree of port corrosion will be significantly reduced, but due to the increase of the comparator The device and its peripheral circuits make the circuit design more complicated and the...
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Login to View More IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 郝春宁卫俊臣周录涛
Owner VIVO MOBILE COMM CO LTD