阅读说明：本技术 计算机自动识别预警电路 (Computer automatic identification early warning circuit ) 是由 涂友冬 徐宏 毛尉 于 2021-07-16 设计创作，主要内容包括：本发明公开一种计算机自动识别预警电路,用于与计算机电源开关配合,其包括压力传感电路、第一晶体管开关电路、第二晶体管开关电路、第一状态指示电路、第二状态指示电路、钳位电路、振荡电路及报警电路,压力传感电路包括第一信号输出端及第二信号输出端；第一晶体管开关电路与第一信号输出端电连接,用于驱动第一状态指示电路；第二晶体管开关电路与第二信号输出端电连接,用于驱动第二状态指示电路及钳位电路；钳位电路与振荡电路电路及第二晶体管开关电路电连接,用于根据第二晶体管开关电路的输出信号控制振荡电路工作；报警电路与振荡电路电连接,用于发出报警信号。本发明具有便于用户使用计算机,结构简单,成本低的优点。(The invention discloses a computer automatic identification early warning circuit, which is used for being matched with a computer power switch and comprises a pressure sensing circuit, a first transistor switch circuit, a second transistor switch circuit, a first state indicating circuit, a second state indicating circuit, a clamping circuit, an oscillating circuit and an alarm circuit, wherein the pressure sensing circuit comprises a first signal output end and a second signal output end; the first transistor switch circuit is electrically connected with the first signal output end and used for driving the first state indicating circuit; the second transistor switch circuit is electrically connected with the second signal output end and used for driving the second state indicating circuit and the clamping circuit; the clamping circuit is electrically connected with the oscillating circuit and the second transistor switch circuit and is used for controlling the oscillating circuit to work according to the output signal of the second transistor switch circuit; the alarm circuit is electrically connected with the oscillating circuit and used for sending out an alarm signal. The invention has the advantages of convenient use of the computer by the user, simple structure and low cost.)

1. A computer automatic identification early warning circuit is used for being matched with a computer power switch and is characterized by comprising a pressure sensing circuit, a first transistor switch circuit, a second transistor switch circuit, a first state indicating circuit, a second state indicating circuit, a clamping circuit, an oscillating circuit and an alarm circuit, wherein the pressure sensing circuit corresponds to the position of the computer power switch and is used for monitoring the pressure applied to the pressure sensing circuit by a user; the first transistor switch circuit is electrically connected with the first signal output end and used for driving the first state indicating circuit; the second transistor switch circuit is electrically connected with the second signal output end and is used for driving the second state indicating circuit and the clamping circuit; the clamping circuit is electrically connected with the oscillating circuit and the second transistor switch circuit and is used for controlling the oscillating circuit to work according to the output signal of the second transistor switch circuit; the alarm circuit is electrically connected with the oscillation circuit and used for sending out an alarm signal according to the oscillation signal of the oscillation circuit.

2. The computer automatic identification early warning circuit of claim 1, wherein the pressure sensing circuit comprises a pressure sensor, a first potentiometer and a second potentiometer, a first end of the pressure sensor is electrically connected with a power supply, and a second end of the pressure sensor is electrically connected with a first end of the first potentiometer; the second end of the first potentiometer is grounded, and the third end of the first potentiometer is the first signal output end; the first end of the second potentiometer is electrically connected with the second end of the pressure sensor, the second end of the second potentiometer is grounded, and the third end of the second potentiometer is the second signal output end.

3. The computer automatic identification early warning circuit of claim 1 or 2, wherein the first transistor switch circuit comprises a first not gate, a first resistor and a first triode, a first end of the first not gate is electrically connected with the first signal output end, a second end of the first not gate is electrically connected with a first end of the first resistor, and a second end of the first resistor is electrically connected with a base electrode of the first triode; and the emitter of the first triode is used for being electrically connected with a power supply, and the collector of the first triode is electrically connected with the first state indicating circuit.

4. The computer automatic identification and early warning circuit of claim 3, wherein the first status indication circuit comprises a first light emitting diode and a second resistor, wherein an anode of the first light emitting diode is electrically connected with a collector of the first triode, a cathode of the first light emitting diode is electrically connected with a first end of the second resistor, and a second end of the second resistor is grounded.

5. The computer automatic identification and early warning circuit as claimed in claim 1 or 2, wherein the second transistor switch circuit comprises a second not gate, a third resistor and a second triode, a first end of the second not gate is electrically connected with the second signal output end, and a second end of the second not gate is electrically connected with a first end of the third resistor; the second end of the third resistor is electrically connected with the base electrode of the second triode; and the emitter of the first triode is electrically connected with the clamping circuit, and the collector of the first triode is electrically connected with the second state indicating circuit.

6. The computer auto-id pre-alarm circuit of claim 5, wherein the second status indication circuit comprises a second light emitting diode, an anode of the second light emitting diode is configured to be electrically connected to a power source, and a cathode of the second light emitting diode is electrically connected to a collector of the second transistor.

7. The computer automatic identification early warning circuit of claim 1 or 2, wherein the clamping circuit comprises a first rectifying diode, a first end of the first rectifying diode is electrically connected with an emitter of the second triode, and a second end of the first rectifying diode is electrically connected with the oscillating circuit.

8. The computer automatic identification early warning circuit of claim 7, wherein the oscillation circuit comprises a third not gate, a fourth not gate, a fifth not gate, a sixth not gate, a fourth resistor, a fifth resistor, a second rectifying diode, a first capacitor and a second capacitor, a first end of the third not gate is electrically connected with a second end of the first rectifying diode, and a second end of the third not gate is electrically connected with a first end of the fourth not gate; a second end of the fourth not gate is electrically connected with a first end of the second rectifying diode; a first end of the fifth not gate is electrically connected with a second end of the second rectifying diode, and a second end of the fifth not gate is electrically connected with a first end of the sixth not gate; the second end of the sixth NOT gate is electrically connected with the alarm circuit;

a first end of the fourth resistor is electrically connected with a second end of the third not gate and a first end of the fourth not gate, and a second end of the fourth resistor is electrically connected with a second end of the first rectifying diode; a first end of the fifth resistor is electrically connected with a second end of the second rectifying diode, and a second end of the fifth resistor is electrically connected with a second end of the fifth not gate and a first end of the sixth not gate; a first end of the first capacitor is electrically connected with a second end of the fourth resistor, and a second end of the first capacitor is electrically connected with a first end of the second rectifying diode; the first end of the second capacitor is electrically connected with the first end of the fifth resistor, and the second end of the second capacitor is electrically connected with the second end of the sixth not gate.

9. The computer automatic identification early warning circuit of claim 1, wherein the alarm circuit comprises an autotransformer and a buzzer, a first end of the autotransformer is electrically connected with a second end of the sixth not gate, a second end of the autotransformer is electrically connected with a first end of the buzzer, and a third end of the autotransformer and a second end of the buzzer are grounded.

Technical Field

The invention relates to the technical field of computers, in particular to a computer automatic identification early warning circuit.

Background

The existing computer usually sets up secrecy through simple password setting, and in order to further increase the poor secrecy, technical personnel in the field have adopted various technical means, for example, chinese patent with application number CN201611099194.0 discloses a computer start-up authentication device, including the computer body, be equipped with the keyboard on the computer body, install the casing on the computer body, be equipped with the opening on the front panel of casing, the opening part is equipped with the closing plate, is equipped with linear gear on the closing plate, and the inside of casing is equipped with the fixed plate, and the below of fixed plate is equipped with fingerprint pattern collection device, and the top of fixed plate is equipped with singlechip, battery and motor, and the singlechip is located between battery and the motor, and the singlechip is connected with the computer body. It is through being equipped with the casing on the computer body, and the inside of casing is equipped with singlechip and circuit board, carries out preliminary authentication to the computer password through keyboard and button, and preliminary authentication finishes the back, and the opening on the casing is opened to single chip microcomputer control motor, through fingerprint identification device, carries out secondary authentication to the realization has strengthened the security of computer. However, such an authentication device is cumbersome and inconvenient for the user to use.

Disclosure of Invention

The invention solves the technical problem of providing a computer automatic identification early warning circuit which is convenient for users to use.

The invention provides a computer automatic identification early warning circuit, which is used for being matched with a computer power switch and comprises a pressure sensing circuit, a first transistor switch circuit, a second transistor switch circuit, a first state indicating circuit, a second state indicating circuit, a clamping circuit, an oscillating circuit and an alarm circuit, wherein the pressure sensing circuit corresponds to the position of the power switch and is used for monitoring the pressure applied to the pressure sensing circuit by a user; the first transistor switch circuit is electrically connected with the first signal output end and used for driving the first state indicating circuit; the second transistor switch circuit is electrically connected with the second signal output end and is used for driving the second state indicating circuit and the clamping circuit; the clamping circuit is electrically connected with the oscillating circuit and the second transistor switch circuit and is used for controlling the oscillating circuit to work according to the output signal of the second transistor switch circuit; the alarm circuit is electrically connected with the oscillation circuit and used for sending out an alarm signal according to the oscillation signal of the oscillation circuit.

In one embodiment, the pressure sensing circuit comprises a pressure sensor, a first potentiometer and a second potentiometer, wherein a first end of the pressure sensor is electrically connected with a power supply, and a second end of the pressure sensor is electrically connected with a first end of the first potentiometer; the second end of the first potentiometer is grounded, and the third end of the first potentiometer is the first signal output end; the first end of the second potentiometer is electrically connected with the second end of the pressure sensor, the second end of the second potentiometer is grounded, and the third end of the second potentiometer is the second signal output end.

In one embodiment, the first transistor switch circuit includes a first not gate, a first resistor and a first triode, a first end of the first not gate is electrically connected with the first signal output end, a second end of the first not gate is electrically connected with a first end of the first resistor, and a second end of the first resistor is electrically connected with a base of the first triode; and the emitter of the first triode is used for being electrically connected with a power supply, and the collector of the first triode is electrically connected with the first state indicating circuit.

In one embodiment, the first status indication circuit includes a first light emitting diode and a second resistor, an anode of the first light emitting diode is electrically connected to a collector of the first transistor, a cathode of the first light emitting diode is electrically connected to a first end of the second resistor, and a second end of the second resistor is grounded.

In one embodiment, the second transistor switch circuit includes a second not gate, a third resistor and a second triode, a first end of the second not gate is electrically connected with the second signal output end, and a second end of the second not gate is electrically connected with a first end of the third resistor; the second end of the third resistor is electrically connected with the base electrode of the second triode; and the emitter of the first triode is electrically connected with the clamping circuit, and the collector of the first triode is electrically connected with the second state indicating circuit.

In one embodiment, the second status indication circuit includes a second light emitting diode having an anode for electrical connection to a power source and a cathode electrically connected to the collector of the second transistor.

In one embodiment, the clamping circuit comprises a first rectifying diode, a first end of the first rectifying diode is electrically connected with the emitter of the second triode, and a second end of the first rectifying diode is electrically connected with the oscillating circuit.

In one embodiment, the oscillation circuit comprises a third not gate, a fourth not gate, a fifth not gate, a sixth not gate, a fourth resistor, a fifth resistor, a second rectifying diode, a first capacitor and a second capacitor, wherein a first end of the third not gate is electrically connected with a second end of the first rectifying diode, and a second end of the third not gate is electrically connected with a first end of the fourth not gate; a second end of the fourth not gate is electrically connected with a first end of the second rectifying diode; a first end of the fifth not gate is electrically connected with a second end of the second rectifying diode, and a second end of the fifth not gate is electrically connected with a first end of the sixth not gate; the second end of the sixth NOT gate is electrically connected with the alarm circuit;

a first end of the fourth resistor is electrically connected with a second end of the third not gate and a first end of the fourth not gate, and a second end of the fourth resistor is electrically connected with a second end of the first rectifying diode; a first end of the fifth resistor is electrically connected with a second end of the second rectifying diode, and a second end of the fifth resistor is electrically connected with a second end of the fifth not gate and a first end of the sixth not gate; a first end of the first capacitor is electrically connected with a second end of the fourth resistor, and a second end of the first capacitor is electrically connected with a first end of the second rectifying diode; the first end of the second capacitor is electrically connected with the first end of the fifth resistor, and the second end of the second capacitor is electrically connected with the second end of the sixth not gate.

In one embodiment, the alarm circuit comprises an autotransformer and a buzzer, a first end of the autotransformer is electrically connected with a second end of the sixth not gate, a second end of the autotransformer is electrically connected with a first end of the buzzer, and a third end of the autotransformer and a second end of the buzzer are grounded.

The invention has the following beneficial effects: the invention uses the cooperation among the pressure sensing circuit, the first transistor switch circuit, the second transistor switch circuit, the first state indicating circuit, the second state indicating circuit, the clamping circuit, the oscillating circuit and the alarm circuit, the pressure sensing circuit corresponds to the position of the power switch and is used for monitoring the pressure applied to the pressure sensing circuit by a user. In addition, the circuit also has the advantages of simple structure, low cost and convenient popularization and application.

Drawings

FIG. 1 is a schematic diagram of a computer automatic identification early warning circuit of the present invention.

FIG. 2 is a circuit diagram of the computer automatic identification early warning circuit of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, if not conflicting, the embodiments of the present invention and the features of the embodiments may be combined with each other within the scope of protection of the present invention.

Referring to fig. 1 and 2, the invention discloses a computer automatic identification early warning circuit, which is used for being matched with a computer power switch and comprises a pressure sensing circuit 1, a first transistor switch circuit 2, a second transistor switch circuit 3, a first state indicating circuit 4, a second state indicating circuit 5, a clamping circuit 6, an oscillating circuit 7 and an alarm circuit 8, wherein the pressure sensing circuit 1 corresponds to the position of the computer power switch and is used for monitoring the pressure applied to the pressure sensing circuit 1 by a user, and the pressure sensing circuit 1 comprises a first signal output end and a second signal output end. The first transistor switch circuit 2 is electrically connected to the first signal output terminal, and is configured to drive the first status indication circuit 4. The second transistor switch circuit 3 is electrically connected to the second signal output terminal, and is configured to drive the second status indication circuit 5 and the clamp circuit 6. The clamping circuit 6 is electrically connected with the oscillating circuit 7 and the second transistor switch circuit 3, and is used for controlling the oscillating circuit 7 to work according to the output signal of the second transistor switch circuit 3. The alarm circuit 8 is electrically connected with the oscillation circuit 7 and is used for sending out an alarm signal according to the oscillation signal of the oscillation circuit 7.

The pressure sensing circuit 1 comprises a pressure sensor RP, a first potentiometer P1 and a second potentiometer P2, wherein a first end of the pressure sensor RP is used for being electrically connected with a power supply, and a second end of the pressure sensor RP is electrically connected with a first end of the first potentiometer P1. Wherein the pressure sensor RP corresponds to the position of the computer power switch, for example, the pressure sensor RP is fixed in a position parallel to the end face of the computer power switch, and when the user presses the computer power switch, the pressure sensor RP is acted by the user. Of course, the pressure sensor RP may also be placed on one side of the computer power switch, as long as the power switch is able to act on the pressure sensor RP when the computer power switch is pressed.

The second terminal of the first potentiometer P1 is grounded, and the third terminal of the first potentiometer P1 is the first signal output terminal, i.e., the third terminal of the first potentiometer P1 is electrically connected to the first transistor switch circuit 2. A first terminal of the second potentiometer P2 is electrically connected to the second terminal of the pressure sensor RP, a second terminal of the second potentiometer P2 is grounded, and a third terminal of the second potentiometer P2 is the second signal output terminal, i.e., the third terminal of the second potentiometer P2 is electrically connected to the second transistor switch circuit 3.

By adjusting the first potentiometer P1 and the second potentiometer P2, the monitoring alarm range of the pressure can be adjusted, and different users can be adapted. It is understood that the pressure sensor RP may be a piezoresistive pressure sensor or a ceramic pressure sensor, etc., which may be selected as needed, and is not particularly limited herein.

The first transistor switch circuit 2 includes a first not gate a1, a first resistor R1, and a first transistor Q1, a first end of the first not gate a1 is electrically connected to the first signal output terminal, a second end of the first not gate a1 is electrically connected to a first end of the first resistor R1, and a second end of the first resistor R1 is electrically connected to a base of the first transistor Q1. The emitter of the first transistor Q1 is used for being electrically connected with a power supply, and the collector of the first transistor Q1 is electrically connected with the first state indicating circuit 4.

The first status indication circuit 4 includes a first light emitting diode LED1 and a second resistor R2, an anode of the first light emitting diode LED1 is electrically connected to a collector of the first transistor Q1, a cathode of the first light emitting diode LED1 is electrically connected to a first end of the second resistor R2, and a second end of the second resistor R2 is grounded. In the normal state, the midpoint potential of the first potentiometer P1 is lower than the threshold level of the input terminal of the first not gate a1, i.e., the low potential. The output terminal of the first not gate a1 outputs high level to turn off the first transistor Q1, and the first light emitting diode LED1 does not emit light.

The second transistor switch circuit 3 includes a second not gate a2, a third resistor R3, and a second transistor Q2, wherein a first end of the second not gate a2 is electrically connected to the second signal output terminal, and a second end of the second not gate a2 is electrically connected to a first end of the third resistor R3. The second end of the third resistor R3 is electrically connected with the base of the second triode Q2. The emitter of the first transistor Q1 is electrically connected to the clamping circuit 6, and the collector of the first transistor Q1 is electrically connected to the second status indicating circuit 5.

The second status indicating circuit 5 comprises a second light emitting diode LED2, an anode of the second light emitting diode LED2 is electrically connected to the power source, and a cathode of the second light emitting diode LED2 is electrically connected to a collector of the second transistor Q2. The clamping circuit 6 comprises a first rectifying diode D1, a first end of the first rectifying diode D1 is electrically connected with the emitter of the second triode Q2, and a second end of the first rectifying diode D1 is electrically connected with the oscillating circuit.

The oscillation circuit 7 includes a third not gate A3, a fourth not gate a4, a fifth not gate a5, a sixth not gate A6, a fourth resistor R4, a fifth resistor R5, a second rectifying diode D2, a first capacitor C1 and a second capacitor C2, a first end of the third not gate A3 is electrically connected to a second end of the first rectifying diode D1, and a second end of the third not gate A3 is electrically connected to a first end of the fourth not gate a 4. A second terminal of the fourth not gate a4 is electrically connected with a first terminal of the second rectifying diode D2. A first terminal of the fifth not gate a5 is electrically connected with the second terminal of the second rectifying diode D2, and a second terminal of the fifth not gate a5 is electrically connected with the first terminal of the sixth not gate a 6. A second end of the sixth not-gate a6 is electrically connected with the alarm circuit 8.

A first end of the fourth resistor R4 is electrically connected to the second end of the third not gate A3 and the first end of the fourth not gate a4, and a second end of the fourth resistor R4 is electrically connected to the second end of the first rectifying diode D1. A first end of the fifth resistor R5 is electrically connected to the second end of the second rectifier diode D2, and a second end of the fifth resistor R5 is electrically connected to the second end of the fifth not gate a5 and the first end of the sixth not gate a 6. A first terminal of the first capacitor C1 is electrically connected to a second terminal of the fourth resistor R4, and a second terminal of the first capacitor C1 is electrically connected to a first terminal of the second rectifying diode D2. A first terminal of the second capacitor C2 is electrically connected to a first terminal of the fifth resistor R5, and a second terminal of the second capacitor C2 is electrically connected to a second terminal of the sixth not gate a 6. It will be appreciated that all of the not gates may be integrated on one chip and powered by one pin of the chip.

The alarm circuit 8 comprises an autotransformer T and a buzzer PB, a first end of the autotransformer T is electrically connected with a second end of the sixth NOT gate A6, a second end of the autotransformer T is electrically connected with a first end of the buzzer PB, and a third end of the autotransformer T and a second end of the buzzer PB are grounded. Through autotransformer T, can increase the volume of buzzer PB to preset volume. In the normal state, the midpoint potential of the second potentiometer P2 is higher than the threshold level of the input terminal of the second not gate a2, i.e., the high potential. The output end outputs low level to cut off the second triode Q2, the second light-emitting diode LED2 does not emit light, and the buzzer PB does not sound. When an illegal user presses a power switch, the pressure sensing circuit 1 monitors the pressure, and when the pressure is not within a preset range set by the user secretly, the first state indicating circuit 4, the second state indicating circuit 5 or the alarm circuit 8 works, so that the illegal user can be driven away.

In summary, in the present invention, through the cooperation among the pressure sensing circuit 1, the first transistor switch circuit 2, the second transistor switch circuit 3, the first state indicating circuit 4, the second state indicating circuit 5, the clamping circuit 6, the oscillating circuit 7 and the alarm circuit 8, the position of the pressure sensing circuit 1 corresponds to the position of the power switch, and is used for monitoring the pressure applied to the pressure sensing circuit 1 by the user, in the using process, when an illegal user presses the power switch, the pressure sensing circuit 1 monitors the pressure condition to identify and drive the first state indicating circuit 4, the second state indicating circuit 5 or the alarm circuit 8 to work, so as to realize the automatic identification and early warning of the computer, and the user does not need to perform complicated authentication in use, thereby facilitating the use of the user. In addition, the circuit also has the advantages of simple structure, low cost and convenient popularization and application.

The computer automatic identification early warning circuit provided by the invention is described in detail, a specific example is applied in the text to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, the present disclosure is only an embodiment of the present disclosure, and not intended to limit the scope of the present disclosure, and all equivalent structures or equivalent flow transformations made by using the present disclosure and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present disclosure, and should not be construed as limiting the present disclosure.