A graphics card power supply safety control circuit

Abstract

The present invention discloses a graphics card power supply safety control circuit, which relates to the technical field of graphics card safety. It includes a power control module for multi-channel regulated power supply; a first detection module and a second detection module, both of which are used for power-off detection; a standby power supply trigger module for providing standby electric energy, pyroelectric induction of the human body and electric energy transmission control; a graphics card power supply module for voltage regulation and power supply to the connected graphics card power socket; a connection detection module for detecting the connection status between the graphics card power supply module and the graphics card power socket; an anti-theft alarm module for performing sound and light alarm when the graphics card is stolen and performing light alarm when receiving the signal output by the communication module; and a communication module for wireless communication with surrounding computers. The graphics card power supply safety control circuit of the present invention can detect whether the graphics card is stolen through the connection status between the graphics card power supply module and the graphics card power socket, and perform mutual alarm with surrounding computers when stolen, thereby improving the anti-theft index of the graphics card.

Description

Technical Field

[0001] The present invention relates to the technical field of graphics card security, and specifically to a graphics card power supply security control circuit. Background Art

[0002] With the continuous development of computer technology, as an important part of computer graphics processing, the performance and power consumption of graphics cards have attracted much attention. A graphics card is installed on the expansion slot of a computer and needs to be removed by disassembling the computer case and related connecting wires. Since graphics cards are relatively expensive, to prevent graphics cards from being stolen, generally, a monitor is used to monitor the computer in real time. However, relevant staff need to constantly pay attention to the monitor situation, which consumes a certain amount of human resources and cannot perform anti-theft alarm processing in a timely and effective manner. Therefore, it needs to be improved. Summary of the Invention

[0003] An embodiment of the present invention provides a graphics card power supply security control circuit to solve the problems raised in the above background art.

[0004] According to the embodiment of the present invention, a graphics card power supply security control circuit is provided, including: a power control module, a first detection module, a power supply control module, a second detection module, a backup power supply trigger module, a graphics card power supply module, a connection detection module, an anti-theft alarm module, and a communication module;

[0005] The power control module is used to access DC electric energy, perform multi-channel voltage stabilization processing on the DC electric energy, and output first electric energy and second electric energy;

[0006] The first detection module is connected to the power control module and is used to receive the first electric energy and output a first control signal when the first electric energy is not received;

[0007] The power supply control module is connected to the power control module and the first detection module and is used to perform DC-DC regulation on the received DC electric energy and output third electric energy when receiving the first control signal;

[0008] The second detection module is connected to the power supply control module and is used to receive the DC electric energy transmitted by the power supply control module and output a second control signal when the DC electric energy transmitted by the power supply control module is not received;

[0009] The backup power supply trigger module is connected to the second detection module, the power supply control module, the anti-theft alarm module, the communication module, and the graphics card power supply module, and is used to provide backup electric energy and receive the third electric energy, and when receiving the second control signal, transmit the backup electric energy to the anti-theft alarm module and the communication module and perform pyroelectric induction of the human body. When pyroelectric induction of the human body is detected, transmit the backup electric energy or the third electric energy to the graphics card power supply module;

[0010] The graphics card power supply module, connected to the power control module, is used to perform DC-DC regulation processing on the first electric energy, backup electric energy or third electric energy and supply power to the connected graphics card power socket;

[0011] The connection detection module, connected to the graphics card power supply module, is used to output a third control signal when the graphics card power supply module is not connected to the graphics card power socket;

[0012] The anti-theft alarm module, connected to the power supply control module, connection detection module and first detection module, is used to output a fourth control signal and perform sound and light alarm when receiving the backup electric energy and the third control signal, receiving the third electric energy and the third control signal, and receiving the first control signal and the third control signal, and perform light alarm when receiving the fifth control signal output by the communication module;

[0013] The communication module, connected to the power control module and the power supply control module, is used to perform DC-DC processing on the second electric energy, third electric energy or backup electric energy and output an alarm signal and control the surrounding computers to perform wireless light alarm when receiving the fourth control signal, and output a fifth control signal when wirelessly receiving the alarm signal wirelessly transmitted by the surrounding computers.

[0014] As a further solution of the present invention: The power control module includes a power interface, a first capacitor, a multi-way switch power supply device, a first diode, a second diode and a second capacitor; the graphics card power supply module includes a third voltage regulator, a third capacitor and a graphics card power supply socket;

[0015] Preferably, the first end of the power interface is connected to one end of the first capacitor and the input end of the multi-way switch power supply device, the second end of the power interface and the other end of the first capacitor are both grounded, the first output end of the multi-way switch power supply device is connected to the anode of the first diode, the cathode of the first diode is connected to one end of the second capacitor and the input end of the third voltage regulator, the output end of the third voltage regulator is connected to one end of the third capacitor and the first end of the graphics card power supply socket, the grounding end of the multi-way switch power supply device is connected to the other end of the second capacitor, the grounding end of the third voltage regulator, the other end of the third capacitor and the ground end, the second end of the graphics card power supply socket is connected to the connection detection module, the cathode of the second diode is connected to the communication module, and the anode of the second diode is connected to the second output end of the multi-way switch power supply device.

[0016] As a further solution of the present invention: The first detection module includes a third resistor, a second optocoupler, a second power supply and a fourth resistor;

[0017] Preferably, the first end of the second optocoupler is connected to the first output end of the multi-way switch power supply device through the third resistor, the third end of the second optocoupler is connected to the anti-theft alarm module and connected to the second power supply through the fourth resistor, the second end of the second optocoupler is connected to the grounding end of the multi-way switch power supply device, and the fourth end of the second optocoupler is grounded.

[0018] As a further solution of the present invention: the power supply control module includes a first power transistor and a first voltage regulator; the second detection module includes a first resistor, a first optocoupler, a second resistor, and a first power supply;

[0019] Preferably, the drain of the first power transistor is connected to the first end of the power supply interface, the source of the first power transistor is connected to the input end of the first voltage regulator and is connected to the first end of the first optocoupler through the first resistor, the second end of the first optocoupler is connected to the second end of the power supply interface, the third end of the first optocoupler is connected to the backup power supply trigger module and is connected to the first power supply through the second resistor, and the output end of the first voltage regulator is connected to the backup power supply trigger module.

[0020] As a further solution of the present invention: the backup power supply trigger module includes a backup battery, a second power transistor, a pyroelectric induction device, a third power transistor, and a third diode;

[0021] Preferably, the first end of the backup battery is connected to the drain of the second power transistor, the second end of the backup battery is grounded, the source of the second power transistor is connected to the power supply end of the pyroelectric induction device, the output end of the first voltage regulator, the drain of the third power transistor, and the communication module, the grounding end of the pyroelectric induction device is grounded, the output end of the pyroelectric induction device is connected to the gate of the third power transistor, the source of the third power transistor is connected to the anode of the third diode, the cathode of the third diode is connected to the input end of the third voltage regulator, and the gate of the second power transistor is connected to the third end of the first optocoupler.

[0022] As a further solution of the present invention: the connection detection module includes a third power supply, a third optocoupler, and a fifth resistor;

[0023] Preferably, the first end of the third optocoupler is connected to the second end of the graphics card power supply socket, the second end of the third optocoupler is connected to the grounding end of the third voltage regulator, the fourth end of the third optocoupler is grounded, and the third end of the third optocoupler is connected to the anti-theft alarm module and is connected to the third power supply through the fifth resistor.

[0024] As a further solution of the present invention: the communication module includes a fourth diode, a second voltage regulator, and a communication device;

[0025] Preferably, the input end of the second voltage regulator is connected to the cathode of the second diode and the cathode of the fourth diode, the anode of the fourth diode is connected to the source of the second power transistor and the output end of the first voltage regulator, the grounding end of the second voltage regulator is connected to the grounding end of the communication device and the ground, the output end of the second voltage regulator is connected to the power supply end of the communication device, and both the signal receiving end and the signal sending end of the communication device are connected to the anti-theft alarm module.

[0026] As a further solution of the present invention: The anti-theft alarm module includes a sixth resistor, a fifth diode, a first inverter, a first logic chip, a first switching tube, a second switching tube, a sixth diode, a seventh diode, an eighth diode, a sound alarm and an alarm lamp;

[0027] Preferably, the anode of the fifth diode is connected to the source of the second power tube, one end of the sound alarm and one end of the alarm lamp through the sixth resistor. The cathode of the fifth diode is connected to the output end of the first inverter and the A terminal of the first logic chip. The input end of the first inverter is connected to the third terminal of the second optocoupler. The B terminal of the first logic chip is connected to the third terminal of the third optocoupler. The Y terminal of the first logic chip is connected to the base of the first switching tube, the anode of the sixth diode and the anode of the eighth diode. The cathode of the sixth diode is connected to the cathode of the seventh diode and the base of the second switching tube. The anode of the seventh diode is connected to the signal sending end of the communication device. The cathode of the eighth diode is connected to the signal receiving end of the communication device. The emitters of the first switching tube and the second switching tube are both grounded. The collector of the first switching tube is connected to the other end of the sound alarm. The collector of the second switching tube is connected to the other end of the alarm lamp.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: The power supply safety control circuit of the present invention's graphics card can supply power to the graphics card power supply module and the communication module by the power control module. When the power control module stops multi-way power supply, the power supply control module processes the input DC electrical energy and maintains the operation of the communication module, the anti-theft alarm module and the backup power supply trigger module. When the backup power supply trigger module detects human pyroelectricity, it supplies power to the graphics card power supply module, so that when there is someone, it monitors the connection status between the graphics card and the graphics card power supply module. When the power control module has no power, the backup power supply trigger module can provide backup electrical energy to continue to complete the detection of the connection status between the graphics card and the power supply, communication and anti-theft alarm work. When the graphics card power supply module is not connected to the graphics card power socket, the anti-theft alarm module gives an audible and visual alarm, and at the same time the communication module wirelessly controls the surrounding computers to give a light alarm. When a graphics card is lost in the surrounding computers, the anti-theft alarm module gives a light alarm, improving the anti-theft index of the graphics card. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0030] Figure 1 It is a schematic block diagram of the principle of a power supply safety control circuit for a graphics card provided by an embodiment of the present invention.

[0031] Figure 2 The circuit diagram of a graphics card power supply safety control circuit provided by an embodiment of the present invention.

[0032] Figure 3 The circuit diagram of an anti-theft alarm module provided by an embodiment of the present invention. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] In one embodiment, please refer to Figure 1 , a graphics card power supply safety control circuit, including: a power control module 1, a first detection module 2, a power supply control module 3, a second detection module 4, a backup power supply trigger module 5, a graphics card power supply module 6, a connection detection module 7, an anti-theft alarm module 8, and a communication module 9;

[0035] Specifically, the power control module 1 is used to access DC electrical energy, perform multi-channel voltage stabilization processing on the DC electrical energy, and output first electrical energy and second electrical energy;

[0036] The first detection module 2 is connected to the power control module 1 and is used to receive the first electrical energy and output a first control signal when the first electrical energy is not received;

[0037] The power supply control module 3 is connected to the power control module 1 and the first detection module 2 and is used to perform DC-DC regulation on the received DC electrical energy and output third electrical energy when receiving the first control signal;

[0038] The second detection module 4 is connected to the power supply control module 3 and is used to receive the DC electrical energy transmitted by the power supply control module 3 and output a second control signal when the DC electrical energy transmitted by the power supply control module 3 is not received;

[0039] The backup power supply trigger module 5 is connected to the second detection module 4, the power supply control module 3, the anti-theft alarm module 8, the communication module 9, and the graphics card power supply module 6, and is used to provide backup electrical energy and receive third electrical energy, and when receiving the second control signal, transmit the backup electrical energy to the anti-theft alarm module 8 and the communication module 9 and perform pyroelectric induction of the human body. When pyroelectric induction of the human body is detected, transmit the backup electrical energy or the third electrical energy to the graphics card power supply module 6;

[0040] The graphics card power supply module 6 is connected to the power control module 1 and is used to perform DC-DC regulation processing on the first electric energy, backup electric energy or third electric energy and supply power to the connected graphics card power socket;

[0041] The connection detection module 7 is connected to the graphics card power supply module 6 and is used to output a third control signal when the graphics card power supply module 6 is not connected to the graphics card power socket;

[0042] The anti-theft alarm module 8 is connected to the power supply control module 3, the connection detection module 7 and the first detection module 2, and is used to output a fourth control signal and perform sound and light alarm when receiving the backup electric energy and the third control signal, receiving the third electric energy and the third control signal, and receiving the first control signal and the third control signal, and perform light alarm when receiving the fifth control signal output by the communication module 9;

[0043] The communication module 9 is connected to the power control module 1 and the power supply control module 3, and is used to perform DC-DC processing on the second electric energy, third electric energy or backup electric energy and perform wireless communication alarm processing when receiving the fourth control signal, and output a fifth control signal when receiving an alarm signal wirelessly.

[0044] In a specific embodiment, the above-mentioned power control module 1 can adopt a power control circuit composed of a power interface, a capacitor, a multi-switch power supply device, etc., which can access DC electric energy, perform high-frequency voltage stabilization adjustment on the DC electric energy, and output multiple DC voltage stabilizations; the above-mentioned first detection module 2 can adopt a first detection circuit composed of an optocoupler, a resistor and a voltage stabilizer, which can perform power-off detection on the electric energy output by the power control module 1 in multiple paths and input to the graphics card power supply module 6; the above-mentioned power supply control module 3 can adopt a power supply control circuit composed of a field effect transistor and a voltage regulator, which can directly perform voltage stabilization adjustment and power supply on the DC electric energy accessed by the power control module 1 when the power control module 1 stops working with multiple outputs; the above-mentioned second detection module 4 can adopt a second detection circuit composed of an optocoupler, a resistor and a voltage stabilizer, which can perform power-off detection on the power supply control module 3; the above-mentioned standby power supply trigger module 5 can adopt a standby power supply trigger circuit composed of a standby battery, a field effect transistor, a pyroelectric induction device, etc., which can provide standby electric energy, perform human pyroelectric induction during the transmission of standby electric energy or the power supply of the power supply control module 3, and supply power to the graphics card power supply module 6 when human pyroelectric is sensed; the above-mentioned graphics card power supply module 6 can adopt a graphics card power supply circuit composed of a voltage regulator, a capacitor and a graphics card power supply socket, which can perform voltage stabilization processing on the input electric energy and supply power to the connected graphics card power supply socket; the above-mentioned connection detection module 7 can adopt a connection detection circuit composed of an optocoupler, a resistor and a voltage stabilizer, which can detect the connection state between the graphics card power supply module 6 and the graphics card power supply socket; the above-mentioned anti-theft alarm module 8 can adopt an anti-theft alarm circuit composed of an inverter, a diode, a logic chip, an alarm device, etc., which can perform sound and light alarm when the graphics card power supply module 6 is not connected to the graphics card power supply socket under the power supply state, or perform light alarm when receiving an alarm signal wirelessly transmitted by the communication module 9 in the surrounding computers; the above-mentioned communication module 9 can adopt a communication circuit composed of a voltage regulator, a diode and a communication device, which can perform voltage stabilization processing on the input electric energy and perform wireless communication work, receive the alarm signal wirelessly transmitted by the communication module 9 in the surrounding computers and send alarm signals.

[0045] In another embodiment, please refer to Figure 1 , Figure 2 and Figure 3 , the power control module 1 includes a power interface, a first capacitor C1, a multi-switch power supply device, a first diode D1, a second diode D2 and a second capacitor C2; the graphics card power supply module 6 includes a third voltage regulator T3, a third capacitor C3 and a graphics card power supply socket;

[0046] Specifically, the first end of the power interface is connected to one end of the first capacitor C1 and the input end of the multi-switch power supply device. The second end of the power interface and the other end of the first capacitor C1 are both grounded. The first output end of the multi-switch power supply device is connected to the anode of the first diode D1. The cathode of the first diode D1 is connected to one end of the second capacitor C2 and the input end of the third voltage regulator T3. The output end of the third voltage regulator T3 is connected to one end of the third capacitor C3 and the first end of the graphics card power supply socket. The ground end of the multi-switch power supply device is connected to the other end of the second capacitor C2, the ground end of the third voltage regulator T3, the other end of the third capacitor C3, and the ground terminal. The second end of the graphics card power supply socket is connected to the connection detection module 7. The cathode of the second diode D2 is connected to the communication module 9. The anode of the second diode D2 is connected to the second output end of the multi-switch power supply device.

[0047] In a specific embodiment, the above multi-switch power supply device may be composed of a single-chip microcomputer, a field-effect transistor, a multi-output transformer, a rectifier, etc., to achieve high-frequency voltage regulation and multi-channel power supply control for the input DC electrical energy. The above third voltage regulator T3 may be selected from the 78 series of three-terminal voltage regulators. The above graphics card power supply socket is a power supply terminal and is connected to the graphics card power socket, which is a power socket on the graphics card and is a power receiving terminal.

[0048] Further, the first detection module 2 includes a third resistor R3, a second optocoupler J2, a second power supply VCC2, and a fourth resistor R4.

[0049] Specifically, the first end of the second optocoupler J2 is connected to the first output end of the multi-switch power supply device through the third resistor R3. The third end of the second optocoupler J2 is connected to the anti-theft alarm module 8 and is connected to the second power supply VCC2 through the fourth resistor R4. The second end of the second optocoupler J2 is connected to the ground end of the multi-switch power supply device. The fourth end of the second optocoupler J2 is grounded.

[0050] In a specific embodiment, the above second optocoupler J2 may be selected as a PC817 optocoupler.

[0051] Further, the power supply control module 3 includes a first power transistor Q1 and a first voltage regulator T1. The second detection module 4 includes a first resistor R1, a first optocoupler J1, a second resistor R2, and a first power supply VCC1.

[0052] Specifically, the drain of the first power transistor Q1 is connected to the first end of the power interface. The source of the first power transistor Q1 is connected to the input end of the first voltage regulator T1 and is connected to the first end of the first optocoupler J1 through the first resistor R1. The second end of the first optocoupler J1 is connected to the second end of the power interface. The third end of the first optocoupler J1 is connected to the standby power supply trigger module 5 and is connected to the first power supply VCC1 through the second resistor R2. The output end of the first voltage regulator T1 is connected to the standby power supply trigger module 5.

[0053] In a specific embodiment, the first power transistor Q1 can be an N-channel field effect transistor; the first voltage regulator T1 can be a 78 series three-terminal voltage regulator; the first optocoupler J1 can be a PC817 optocoupler.

[0054] Further, the standby power supply trigger module 5 includes a standby battery, a second power transistor Q2, a pyroelectric induction device, a third power transistor Q3, and a third diode D3;

[0055] Specifically, the first end of the standby battery is connected to the drain of the second power transistor Q2, the second end of the standby battery is grounded, the source of the second power transistor Q2 is connected to the power supply end of the pyroelectric induction device, the output end of the first voltage regulator T1, the drain of the third power transistor Q3, and the communication module 9. The grounding end of the pyroelectric induction device is grounded, the output end of the pyroelectric induction device is connected to the gate of the third power transistor Q3, the source of the third power transistor Q3 is connected to the anode of the third diode D3, the cathode of the third diode D3 is connected to the input end of the third voltage regulator T3, and the gate of the second power transistor Q2 is connected to the third end of the first optocoupler J1.

[0056] In a specific embodiment, the standby battery can be a storage battery; the second power transistor Q2 can be an N-channel field effect transistor; the pyroelectric induction device can be composed of a pyroelectric sensor and a signal amplification circuit for human pyroelectric induction; the third power transistor Q3 can be an N-channel field effect transistor.

[0057] Further, the connection detection module 7 includes a third power supply VCC3, a third optocoupler J3, and a fifth resistor R5;

[0058] Specifically, the first end of the third optocoupler J3 is connected to the second end of the graphics card power supply socket, the second end of the third optocoupler J3 is connected to the grounding end of the third voltage regulator T3, the fourth end of the third optocoupler J3 is grounded, the third end of the third optocoupler J3 is connected to the anti-theft alarm module 8 and connected to the third power supply VCC3 through the fifth resistor R5.

[0059] In a specific embodiment, the third optocoupler J3 can be a PC817 optocoupler.

[0060] Further, the communication module 9 includes a fourth diode D4, a second voltage regulator T2, and a communication device;

[0061] Specifically, the input end of the second voltage regulator T2 is connected to the cathode of the second diode D2 and the cathode of the fourth diode D4. The anode of the fourth diode D4 is connected to the source of the second power transistor Q2 and the output end of the first voltage regulator T1. The grounding end of the second voltage regulator T2 is connected to the grounding end of the communication device and the ground. The output end of the second voltage regulator T2 is connected to the power supply end of the communication device. The signal receiving end and the signal sending end of the communication device are both connected to the anti-theft alarm module 8.

[0062] In a specific embodiment, the above communication device may be composed of a single-chip microcomputer and an RS458 communication chip, and can perform wireless communication with communication devices in surrounding computers. When the anti-theft alarm module 8 outputs a fourth control signal, it can wirelessly transmit an alarm signal, and can also receive an alarm signal wirelessly output by communication devices in surrounding computers. This alarm signal is only generated by the communication device in the computer where the graphics card is stolen. The above second voltage regulator T2 can be selected from the 78 series of three-terminal voltage regulators.

[0063] Further, the anti-theft alarm module 8 includes a sixth resistor R6, a fifth diode D5, a first inverter INV1, a first logic chip U1, a first switching tube V1, a second switching tube V2, a sixth diode D6, a seventh diode D7, an eighth diode D8, a sound alarm, and an alarm light.

[0064] Specifically, the anode of the fifth diode D5 is connected to the source of the second power transistor Q2, one end of the sound alarm, and one end of the alarm light through the sixth resistor R6. The cathode of the fifth diode D5 is connected to the output terminal of the first inverter INV1 and the A terminal of the first logic chip U1. The input terminal of the first inverter INV1 is connected to the third terminal of the second optocoupler J2. The B terminal of the first logic chip U1 is connected to the third terminal of the third optocoupler J3. The Y terminal of the first logic chip U1 is connected to the base of the first switching tube V1, the anode of the sixth diode D6, and the anode of the eighth diode D8. The cathode of the sixth diode D6 is connected to the cathode of the seventh diode D7 and the base of the second switching tube V2. The anode of the seventh diode D7 is connected to the signal sending end of the communication device. The cathode of the eighth diode D8 is connected to the signal receiving end of the communication device. The emitters of the first switching tube V1 and the second switching tube V2 are both grounded. The collector of the first switching tube V1 is connected to the other end of the sound alarm. The collector of the second switching tube V2 is connected to the other end of the alarm light.

[0065] In a specific embodiment, the above first inverter INV1 can be selected from a NOT gate chip; the above first logic chip U1 can be selected from an AND gate chip; the above first switching tube V1 and second switching tube V2 can both be selected from NPN-type triodes; the above sound alarm can be selected from a speaker; the above alarm light can be composed of LED lights.

[0066] In a graphics card power supply safety control circuit according to this embodiment, DC electrical energy is accessed through a power interface. When a multi-channel switching power supply device performs multi-channel voltage regulation, the first electrical energy and the second electrical energy are output. The first electrical energy is subjected to voltage regulation by a third voltage regulator T3 and supplies power to a graphics card power supply socket. The second electrical energy is subjected to voltage regulation by a second voltage regulator T2 and supplies power to a communication device. At this time, when the graphics card power supply socket is disconnected from the graphics card power jack, the third optocoupler J3 will be cut off. Because the third optocoupler J3 needs to be powered on at the graphics card power supply socket to accurately determine the connection state between the graphics card power supply socket and the graphics card power jack, the B terminal of the first logic chip U1 becomes high level. At this time, the second optocoupler J2 conducts, and the first inverter INV1 controls the A terminal of the first logic chip U1 to become high level. The Y terminal of the first logic chip U1 controls the first switching tube V1 and the second switching tube V2 to conduct, and a sound alarm sounds and an alarm lamp gives a light alarm. At the same time, the eighth diode D8 transmits a signal to the signal receiving end of the communication device, so that the communication device wirelessly outputs an alarm signal. When the communication device in the surrounding computers receives the alarm signal, the surrounding computers will give a light alarm. Therefore, when the communication device in the surrounding computers issues an alarm signal because the graphics card power supply socket is disconnected from the graphics card power jack, the signal sending end of the communication device will control the second switching tube V2 to conduct and control the alarm lamp to give a light alarm. In addition, when the multi-channel switching power supply device stops supplying power, the second optocoupler J2 is cut off, and the second power supply VCC2 triggers the first power tube Q1 to conduct through the fourth resistor R4, performs voltage regulation through the first voltage regulator T1, and supplies power to a pyroelectric induction device, the second voltage regulator T2, a sound alarm, an alarm lamp, and the first logic chip U1. When the pyroelectric induction device senses human pyroelectricity, it will control the third power tube Q3 to conduct, and then supply power to the graphics card power supply socket. The A terminal of the first logic chip U1 is at high level. As long as the third optocoupler J3 is cut off, that is, the graphics card power supply socket is disconnected from the graphics card power jack, the first logic chip U1 controls the first switching tube V1 and the second switching tube V2 to conduct. At the same time, the power interface disconnects the DC electrical energy, the first optocoupler J1 is cut off, triggers the second power tube Q2 to conduct, and the backup battery performs backup power supply to maintain the operation of the communication module 9 and the anti-theft alarm module 8, and supplies power to the graphics card power supply module 6 after sensing human pyroelectricity.

[0067] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0068] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A graphics card power supply safety control circuit, characterized in that: The graphics card power supply safety control circuit includes: a power control module, a first detection module, a power supply control module, a second detection module, a standby power supply trigger module, a graphics card power supply module, a connection detection module, an anti-theft alarm module, and a communication module; The power control module is used to access DC electrical energy, perform multi-channel voltage regulation on the DC electrical energy, and output first electrical energy and second electrical energy; The first detection module is connected to the power control module and is used to receive the first electrical energy and output a first control signal when the first electrical energy is not received; The power supply control module is connected to the power control module and the first detection module and is used to perform DC-DC regulation on the received DC electrical energy and output third electrical energy when receiving the first control signal; The second detection module is connected to the power supply control module and is used to receive the DC electrical energy transmitted by the power supply control module and output a second control signal when the DC electrical energy transmitted by the power supply control module is not received; The standby power supply trigger module is connected to the second detection module, the power supply control module, the anti-theft alarm module, the communication module, and the graphics card power supply module, and is used to provide standby electrical energy and receive third electrical energy and, when receiving the second control signal, transmit the standby electrical energy to the anti-theft alarm module and the communication module and perform pyroelectric induction of the human body. When pyroelectric induction of the human body is detected, transmit the standby electrical energy or the third electrical energy to the graphics card power supply module; The graphics card power supply module is connected to the power control module and is used to perform DC-DC regulation processing on the first electrical energy, standby electrical energy, or third electrical energy and supply power to the connected graphics card power socket; The connection detection module is connected to the graphics card power supply module and is used to output a third control signal when the graphics card power supply module is not connected to the graphics card power socket; The anti-theft alarm module is connected to the power supply control module, the connection detection module, and the first detection module and is used to output a fourth control signal and perform a sound and light alarm when receiving the standby electrical energy and the third control signal, receiving the third electrical energy and the third control signal, and receiving the first control signal and the third control signal, and perform a light alarm when receiving the fifth control signal output by the communication module; The communication module is connected to the power control module and the power supply control module and is used to perform DC-DC processing on the second electrical energy, third electrical energy, or standby electrical energy and output an alarm signal and control the surrounding computers to perform wireless light alarms when receiving the fourth control signal, and output a fifth control signal when receiving the alarm signal wirelessly transmitted by the surrounding computers wirelessly; 2. The power supply safety control circuit of a graphics card according to claim 1, characterized in that The power control module includes a power interface, a first capacitor, a multi-switch power supply device, a first diode, a second diode, and a second capacitor; the graphics card power supply module includes a third voltage regulator, a third capacitor, and a graphics card power supply socket; The first end of the power interface is connected to one end of the first capacitor and the input end of the multi-way switch power supply device. The second end of the power interface and the other end of the first capacitor are both grounded. The first output end of the multi-way switch power supply device is connected to the anode of the first diode. The cathode of the first diode is connected to one end of the second capacitor and the input end of the third voltage regulator. The output end of the third voltage regulator is connected to one end of the third capacitor and the first end of the graphics card power supply socket. The grounding end of the multi-way switch power supply device is connected to the other end of the second capacitor, the grounding end of the third voltage regulator, the other end of the third capacitor and the ground end. The second end of the graphics card power supply socket is connected to the connection detection module. The cathode of the second diode is connected to the communication module. The anode of the second diode is connected to the second output end of the multi-way switch power supply device.

3. The power supply safety control circuit for a graphics card according to claim 2, wherein, The first detection module includes a third resistor, a second optocoupler, a second power supply and a fourth resistor; The first end of the second optocoupler is connected to the first output end of the multi-way switch power supply device through the third resistor. The third end of the second optocoupler is connected to the anti-theft alarm module and connected to the second power supply through the fourth resistor. The second end of the second optocoupler is connected to the grounding end of the multi-way switch power supply device. The fourth end of the second optocoupler is grounded.

4. The power supply safety control circuit of a graphics card according to claim 3, characterized in that, The power supply control module includes a first power transistor and a first voltage regulator; the second detection module includes a first resistor, a first optocoupler, a second resistor and a first power supply; The drain of the first power transistor is connected to the first end of the power interface. The source of the first power transistor is connected to the input end of the first voltage regulator and connected to the first end of the first optocoupler through the first resistor. The second end of the first optocoupler is connected to the second end of the power interface. The third end of the first optocoupler is connected to the backup power supply trigger module and connected to the first power supply through the second resistor. The output end of the first voltage regulator is connected to the backup power supply trigger module.

5. The power supply safety control circuit of a graphics card according to claim 4, characterized in that, The backup power supply trigger module includes a backup battery, a second power transistor, a pyroelectric induction device, a third power transistor and a third diode; The first end of the backup battery is connected to the drain of the second power transistor. The second end of the backup battery is grounded. The source of the second power transistor is connected to the power supply end of the pyroelectric induction device, the output end of the first voltage regulator, the drain of the third power transistor and the communication module. The grounding end of the pyroelectric induction device is grounded. The output end of the pyroelectric induction device is connected to the gate of the third power transistor. The source of the third power transistor is connected to the anode of the third diode. The cathode of the third diode is connected to the input end of the third voltage regulator. The gate of the second power transistor is connected to the third end of the first optocoupler.

6. The power supply safety control circuit for a graphics card according to claim 5, characterized in that, The connection detection module includes a third power supply, a third optocoupler and a fifth resistor; The first end of the third optocoupler is connected to the second end of the graphics card power supply socket. The second end of the third optocoupler is connected to the grounding end of the third voltage regulator. The fourth end of the third optocoupler is grounded. The third end of the third optocoupler is connected to the anti-theft alarm module and connected to the third power supply through the fifth resistor.

7. The power supply safety control circuit for a graphics card according to claim 6, characterized in that, The communication module includes a fourth diode, a second voltage regulator and a communication device; The input terminal of the second voltage regulator is connected to the cathodes of the second diode and the fourth diode. The anode of the fourth diode is connected to the source of the second power transistor and the output terminal of the first voltage regulator. The ground terminal of the second voltage regulator is connected to the ground terminal of the communication device and the ground. The output terminal of the second voltage regulator is connected to the power supply terminal of the communication device. Both the signal receiving terminal and the signal transmitting terminal of the communication device are connected to the anti-theft alarm module.

8. The power supply safety control circuit for a graphics card according to claim 7, characterized in that, The anti-theft alarm module includes a sixth resistor, a fifth diode, a first inverter, a first logic chip, a first switching transistor, a second switching transistor, a sixth diode, a seventh diode, an eighth diode, a sound alarm and an alarm lamp; The anode of the fifth diode is connected to the source of the second power transistor, one end of the sound alarm and one end of the alarm lamp through the sixth resistor. The cathode of the fifth diode is connected to the output terminal of the first inverter and the A terminal of the first logic chip. The input terminal of the first inverter is connected to the third terminal of the second optocoupler. The B terminal of the first logic chip is connected to the third terminal of the third optocoupler. The Y terminal of the first logic chip is connected to the base of the first switching transistor, the anode of the sixth diode and the anode of the eighth diode. The cathode of the sixth diode is connected to the cathode of the seventh diode and the base of the second switching transistor. The anode of the seventh diode is connected to the signal transmitting terminal of the communication device. The cathode of the eighth diode is connected to the signal receiving terminal of the communication device. The emitters of the first switching transistor and the second switching transistor are both grounded. The collector of the first switching transistor is connected to the other end of the sound alarm. The collector of the second switching transistor is connected to the other end of the alarm lamp.

Images