CN-224232153-U - Analog multiplexing detection circuit for destroying signals in biological recognition module

Abstract

The utility model discloses an analog multiplexing detection circuit for destroying signals in a biological identification module, which realizes independent monitoring and management of a single interface to double devices through a sinking plate Type-C interface. The circuit divides a 24-line signal path of the Type-C interface into two independent detection circuits, wherein each circuit comprises a program programming path and a destroying signal path. The destroying signal path realizes the imaging display of destroying signals through the step-down power supply chip and the single-pole double-throw voltage selection switch without triggering the actual destroying action. The LED lamps integrated on the substrate are used for monitoring the stability of the power supply, and the destruction signal indicator lamps are used for indicating the effectiveness of the destruction signals. In addition, the circuit is provided with a software part for managing and controlling the detection function, and the destroying signal state is visually displayed through the destroying signal indicator lamp, so that the problem that the destroying signal in the existing reinforcing flat plate is difficult to verify is solved.

Inventors

• Request for anonymity

Assignees

• 苏州瑞飞达计算机科技有限公司

Dates

Publication Date

20260512

Application Date

20250411

Claims (6)

1. 1. The utility model provides a destroy analog multiplexing detection circuit of signal in biological identification module, includes sunk plate Type-C interface, its characterized in that, sunk plate Type-C interface sets up on the base plate and has 24 line signal paths, and 24 line signal paths divide into two paths of detection circuit that are identical and carry out input/output, two paths of detection circuit can independently operate, and every detection circuit all is provided with the destruction signal indicator who is used for monitoring stable LED lamp of power and is used for monitoring destruction signal integrality.
2. 2. The analog multiplexing detection circuit of destruction signals in a biometric module of claim 1, wherein each detection circuit comprises a programming path and a destruction signal path.
3. 3. The circuit for detecting the analog multiplexing of the destruction signal in the biological recognition module according to claim 2, wherein the program programming path comprises a USB-to-serial chip and a program programming interface, and a receiving end of the USB-to-serial chip is connected with an output end of the Type-C interface, receives the output control signal and the USB signal, and is connected to the program programming interface.
4. 4. The analog multiplexing detection circuit for destroying signals in a biological recognition module according to claim 2, wherein the destroying signal path comprises a step-down power chip, a single-pole double-throw voltage selection switch and a destroying signal indicator lamp, the step-down power chip is directly connected with a Type-C interface and is powered by the Type-C interface, the output end of the step-down power chip is connected with one switch of the single-pole double-throw voltage switch, the single-pole double-throw voltage switch is connected with the destroying signal indicator lamp, the Type-C interface is directly connected with the other switch of the single-pole double-throw voltage switch to enable the single-pole double-throw voltage switch to select voltage, and the destroying signal indicator lamp is directly connected with the Type-C interface and directly receives destroying signals.
5. 5. The circuit of claim 4 wherein the step-down power chip is a 5V to 3.3V power chip.
6. 6. The analog multiplexing detection circuit of a destruction signal in a biological recognition module according to claim 5, wherein the destruction signal indicator is directly powered by Type-C, and is connected in series to a destruction signal with a low potential, which is effective, after being output by a power chip, and when the destruction signal is effective, the corresponding destruction signal indicator is always on.

Description

Analog multiplexing detection circuit for destroying signals in biological recognition module Technical Field The utility model relates to the technical field of data security, in particular to an analog multiplexing detection circuit for destroying signals in a biological recognition module. Background In modern reinforced panels, some special purpose machines need to consider destroying critical parts of the panel under the necessary conditions. The soft destruction part can be solved by a re-burning program, but if the hardware destruction part performs physical test, immeasurable cost loss is necessarily caused. In the prior art, verifying the integrity and validity of the destruction signal is a challenge. The existing special reinforcement flat plate has the problems that whether a destruction signal is complete or not cannot be determined, and the integrity of the destruction signal is difficult to verify. In order to reduce the test cost and improve the verification efficiency, it is important to lead out the test substrate which forms a loop through the detection circuit through the interface to complete the imaging of the destruction signal without executing the destruction action. Disclosure of utility model The utility model aims to provide an analog multiplexing detection circuit for destroying signals in a biological recognition module, which solves the problems of the background technology. The utility model is realized by the following technical scheme: The utility model provides an analogue multiplexing detection circuit of destroying signal in biological identification module, includes sunk plate Type-C interface, sunk plate Type-C interface sets up on the base plate and has 24 line signal paths, and 24 line signal paths divide into two paths of detection circuit that are identical and carry out input/output, two paths of detection circuit can independent operation, and every detection circuit all is provided with and is used for monitoring the stable LED lamp of power and is used for monitoring the destruction signal indicator lamp of destroying signal integrality. Further, the method comprises the steps of, Each path of detection circuit comprises a program programming path and a destruction signal path. Further, the method comprises the steps of, The program programming path comprises a USB (universal serial bus) serial port chip and a program programming interface, wherein the receiving end of the USB serial port chip is connected with the output end of the Type-C interface, receives an output control signal and a USB signal and is connected to the program programming interface. Further, the method comprises the steps of, The destroying signal path comprises a step-down power supply chip, a single-pole double-throw voltage selection switch and a destroying signal indicating lamp, wherein the step-down power supply chip is directly connected with a Type-C interface and is powered by the Type-C interface, the output end of the step-down power supply chip is connected with one switch of the single-pole double-throw voltage switch, the single-pole double-throw voltage switch is connected with the destroying signal indicating lamp, the Type-C interface is directly connected with the other switch of the single-pole double-throw voltage switch to enable the single-pole double-throw voltage switch to select voltage, and the destroying signal indicating lamp is directly connected with the Type-C interface and directly receives destroying signals. Further, the method comprises the steps of, The step-down power supply chip is a 5V-to-3.3V power supply chip. Further, the method comprises the steps of, The destroying signal indicator lamp is directly powered by the Type-C, is connected to the low-potential effective destroying signal in series after being output by a power chip, and is normally on when the destroying signal is effective. The utility model has the beneficial effects that: 1. Through dividing the 24-wire signal path of the Type-C interface into two independent detection circuits, the single Type-C interface is connected with two devices simultaneously and monitors the states of the two devices, the monitoring efficiency is improved, and the method is suitable for a scene requiring simultaneous management of multiple devices. 2. The destroying signal forms a loop through the detecting circuit, so that the destroying signal can be simulated without triggering actual destroying action. The damage of misoperation to hardware is avoided, and meanwhile, the state of the destroying signal is intuitively displayed through the on-off state of the destroying signal indicating lamp, so that the debugging and monitoring are facilitated. Drawings The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the de