Safety control circuit for video card power supply

Abstract

The invention discloses a graphics card power supply safety control circuit, which relates to the technical field of graphics card safety, and comprises a power supply control module used for multi-path voltage stabilization power supply; the first detection module and the second detection module are both used for power-off detection; the standby power supply trigger module is used for providing standby electric energy, human body pyroelectric induction and electric energy transmission control; the video card power supply module is used for adjusting voltage and supplying power to the connected video card power socket; the connection detection module is used for detecting the connection state of the graphics card power supply module and the graphics card power socket; the anti-theft alarm module is used for carrying out sound and light alarm when the display card is stolen and carrying out light alarm when the signal output by the communication module is received; and the communication module is used for performing wireless communication with a surrounding computer. The display card power supply safety control circuit can detect whether the display card is stolen or not through the connection state of the display card power supply module and the display card power supply socket, and communicates with a surrounding computer to give an alarm when the display card is stolen, so that the anti-theft index of the display card is improved.

Description

Technical Field

[0001] The invention relates to the field of graphics card safety technology, in particular to a graphics card power supply safety control circuit. Background Art

[0002] With the continuous development of computer technology, graphics cards, as an important component of computer graphics processing, have attracted much attention for their performance and power consumption. Graphics cards are installed on the expansion slot of the computer, and the graphics card can only be removed by dismantling the computer casing and related connecting cables. Since graphics cards are relatively expensive, in order to prevent graphics cards from being stolen, monitors are generally used to monitor computers in real time. However, relevant staff are required to pay attention to the monitor status at all times, which consumes a certain amount of human resources and cannot promptly and effectively handle anti-theft alarms. Therefore, there is room for improvement. Summary of the invention

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

[0004] According to an embodiment of the present invention, a graphics card power supply safety control circuit is provided, comprising: a power supply 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;

[0005] A power control module, used for receiving direct current power, performing multi-channel voltage stabilization processing on the direct current power, and outputting first power and second power;

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

[0007] A power supply control module, connected to the power supply control module and the first detection module, for performing DC-DC regulation on the received direct current power and outputting third power upon receiving the first control signal;

[0008] A second detection module, connected to the power supply control module, configured to receive the DC power transmitted by the power supply control module and output a second control signal when the DC power transmitted by the power supply control module is not received;

[0009] A 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 power and receive third power, and when receiving the second control signal, transmit the backup power to the anti-theft alarm module and the communication module and perform human body pyroelectric sensing, and when human body pyroelectric sensing is detected, transmit the backup power or the third power to the graphics card power supply module;

[0010] A graphics card power supply module, connected to the power control module, for performing DC-DC regulation processing on the first power, the standby power or the third power and supplying power to the connected graphics card power socket;

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

[0012] an anti-theft alarm module, connected to the power supply control module, the connection detection module and the first detection module, and configured to output a fourth control signal and perform an audible and visual alarm when receiving the backup power and the third control signal, receiving the third power 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;

[0013] 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 electric energy, the third electric energy or the backup electric energy and, when receiving the fourth control signal, output an alarm signal and control the surrounding computers to perform a wireless light alarm, and output a fifth control signal when the alarm signal wirelessly transmitted by the surrounding computers is received wirelessly.

[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 stabilizer, 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 switching 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 switching 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 ground end of the multi-way switching power supply device is connected to the other end of the second capacitor, the ground end of the third voltage regulator, the other end of the third capacitor and the ground, the second end of the graphics card power supply socket is connected to the connection detection module, and the cathode of the second diode is connected to the communication module.

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

[0017] Preferably, the first end of the second optocoupler is connected to the output end of the multi-way switching power supply device through a 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 a fourth resistor, the second end of the second optocoupler is connected to the ground end of the multi-way switching 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 tube and a first voltage regulator; the second detection module includes a first resistor, a first optical coupler, a second resistor and a first power supply;

[0019] Preferably, the drain of the first power tube is connected to the first end of the power supply interface, the source of the first power tube 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 tube, a pyroelectric induction device, a third power tube and a third diode;

[0021] Preferably, the first end of the backup battery is connected to the drain of the second power tube, the second end of the backup battery is grounded, the source of the second power tube is connected to the power supply end of the pyroelectric sensing device, the output end of the first voltage regulator, the drain of the third power tube and the communication module, the ground end of the pyroelectric sensing device is grounded, the output end of the pyroelectric sensing device is connected to the gate of the third power tube, the source of the third power tube 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 tube 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 optical coupler and a fifth resistor;

[0023] Preferably, the first end of the third optocoupler is connected to the second end of the graphics card power socket, the second end of the third optocoupler is connected to the ground 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 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 tube and the output end of the first voltage regulator, the ground end of the second voltage regulator is connected to the ground end and the ground end of the communication device, the output end of the second voltage regulator is connected to the power supply end of the communication device, and the signal receiving end and the signal sending end of the communication device are both 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 switch tube, a second switch tube, a sixth diode, a seventh diode, an eighth diode, a sound alarm and an alarm light;

[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 light through the sixth resistor, the cathode of the fifth diode is connected to the output end of the first inverter and the A end of the first logic chip, the input end of the first inverter is connected to the third end of the second optocoupler, the B end of the first logic chip is connected to the third end of the third optocoupler, the Y end 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 emitter of the first switching tube and the emitter of the second switching tube are both grounded, the collector of the first switching tube is connected to the other end of the sound alarm, and the collector of the second switching tube is connected to the other end of the alarm light.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: the graphics card power supply safety control circuit of the present invention can be powered by the power control module for the graphics card power supply module and the communication module; when the power control module stops multi-channel power supply, the power supply control module processes the connected DC power and maintains the operation of the communication module, the anti-theft alarm module and the standby power supply trigger module; when the standby power supply trigger module detects human body pyroelectricity, it supplies power to the graphics card power supply module, so that when there are people, the connection status between the graphics card and the graphics card power supply module is monitored; when the power control module has no power, the standby power supply trigger module can provide standby power to continue to complete the connection status detection, communication and anti-theft alarm work between the graphics card and the power supply; when the graphics card power supply module is not connected to the graphics card power socket, the anti-theft alarm module performs sound and light alarm, and at the same time, the communication module wirelessly controls the surrounding computers to perform light alarm; when the graphics card is lost in the surrounding computers, the anti-theft alarm module performs light alarm, thereby improving the graphics card anti-theft index. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

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

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

[0032] Figure 3 A circuit diagram of an anti-theft alarm module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In one embodiment, see Figure 1 , a graphics card power supply safety control circuit, comprising: a power supply 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 receive direct current power, perform multi-channel voltage stabilization on the direct current power, and output the first power and the second power;

[0036] A first detection module 2, connected to the power control module 1, for receiving the first electric energy and outputting a first control signal when the first electric energy is not received;

[0037] A power supply control module 3, connected to the power supply control module 1 and the first detection module 2, for performing DC-DC regulation on the received direct current power and outputting third power when receiving the first control signal;

[0038] A second detection module 4, connected to the power supply control module 3, for receiving the DC power transmitted by the power supply control module 3 and outputting a second control signal when the DC power 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 power and receive the third power, and when receiving the second control signal, transmit the backup power to the anti-theft alarm module 8 and the communication module 9 and perform human body pyroelectric sensing, and when human body pyroelectric sensing is detected, transmit the backup power or the third power to the graphics card power supply module 6;

[0040] A graphics card power supply module 6, connected to the power control module 1, for performing DC-DC regulation on the first power, the standby power or the third power and supplying power to the connected graphics card power socket;

[0041] A connection detection module 7, connected to the graphics card power supply module 6, and configured 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 an audible and visual alarm when receiving the backup power and the third control signal, receiving the third power 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 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, the third electric energy or the backup electric energy and perform wireless communication alarm processing when receiving the fourth control signal, and output the fifth control signal when the alarm signal is received wirelessly.

[0044] In a specific embodiment, the power control module 1 may adopt a power control circuit composed of a power interface, a capacitor, a multi-way switching power supply device, etc., which may be connected to direct current power and perform high-frequency voltage regulation on the direct current power, and output multiple direct current voltage regulation; the first detection module 2 may adopt a first detection circuit composed of a photoelectric coupler, a resistor and a voltage regulator, which may perform power-off detection on the power output of the power control module 1 in multiple ways and input to the graphics card power supply module 6; the power supply control module 3 may adopt a power supply control circuit composed of a field effect tube and a voltage regulator, which may directly regulate the voltage of the direct current power connected to the power control module 1 and supply power when the power control module 1 stops the multi-way output operation; the second detection module 4 may adopt a second detection circuit composed of a photoelectric coupler, a resistor and a voltage regulator, which may perform power-off detection on the power supply control module 3; the backup power supply trigger module 5 may adopt a backup power supply trigger circuit composed of a backup battery, a field effect tube, a pyroelectric induction device, etc., which may provide backup power, and when the backup power is transmitted or the power supply control module 3 is powered When the human body pyroelectric induction is detected, the graphics card power supply module 6 is powered; the graphics card power supply module 6 can adopt a graphics card power supply circuit composed of a voltage stabilizer, a capacitor and a graphics card power supply socket, which can stabilize the input electric energy and supply power to the connected graphics card power supply socket; the 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 status between the graphics card power supply module 6 and the graphics card power supply socket; the 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 an audible and visual alarm when the graphics card power supply module 6 is not connected to the graphics card power supply socket in the power supply state, or perform a light alarm when receiving an alarm signal wirelessly transmitted by a communication module 9 in a surrounding computer; the communication module 9 can adopt a communication circuit composed of a voltage stabilizer, a diode and a communication device, which can stabilize the input electric energy and perform wireless communication, receive the alarm signal wirelessly transmitted by the communication module 9 in the surrounding computer and send the alarm signal.

[0045] In another embodiment, see Figure 1 , Figure 2 and Figure 3 The power control module 1 includes a power interface, a first capacitor C1, a multi-way 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 stabilizer 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-way switching 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-way switching 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-way switching 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 end, the second end of the graphics card power supply socket is connected to the connection detection module 7, and the cathode of the second diode D2 is connected to the communication module 9.

[0047] In a specific embodiment, the above-mentioned multi-channel switching power supply device can be composed of a single-chip microcomputer, a field effect transistor, a multi-channel output transformer, a rectifier, etc., to achieve high-frequency voltage regulation and multi-channel power supply control of the input DC power; the above-mentioned third voltage stabilizer T3 can use a 78 series three-terminal voltage stabilizer; the above-mentioned graphics card power supply socket is the power supply end, which is connected to the graphics card power socket, and the graphics card power socket is the power socket on the graphics card, which is the power receiving end.

[0048] Further, the first detection module 2 includes a third resistor R3, a second optical coupler 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 output end of the multi-way switching 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 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-way switching power supply device, and the fourth end of the second optocoupler J2 is grounded.

[0050] In a specific embodiment, the second optical coupler J2 can be a PC817 photoelectric coupler.

[0051] Furthermore, the power supply control module 3 includes a first power tube Q1 and a first voltage regulator T1; the second detection module 4 includes a first resistor R1, a first optical coupler J1, a second resistor R2 and a first power supply VCC1;

[0052] Specifically, the drain of the first power tube Q1 is connected to the first end of the power interface, the source of the first power tube 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 backup power supply trigger module 5 and is connected to the first power supply VCC1 through the second resistor R2, and the output end of the first voltage regulator T1 is connected to the backup power supply trigger module 5.

[0053] In a specific embodiment, the first power tube Q1 may be an N-channel field effect tube; the first voltage regulator T1 may be a 78 series three-terminal voltage regulator; and the first optical coupler J1 may be a PC817 photoelectric coupler.

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

[0055] Specifically, the first end of the backup battery is connected to the drain of the second power tube Q2, the second end of the backup battery is grounded, the source of the second power tube Q2 is connected to the power supply end of the pyroelectric sensing device, the output end of the first voltage regulator T1, the drain of the third power tube Q3 and the communication module 9, the ground end of the pyroelectric sensing device is grounded, the output end of the pyroelectric sensing device is connected to the gate of the third power tube Q3, the source of the third power tube 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 tube Q2 is connected to the third end of the first optocoupler J1.

[0056] In a specific embodiment, the backup battery may be a storage battery; the second power tube Q2 may be an N-channel field effect tube; the pyroelectric sensing device may be composed of a pyroelectric sensor and a signal amplification circuit to perform human body pyroelectric sensing; the third power tube Q3 may be an N-channel field effect tube.

[0057] Further, the connection detection module 7 includes a third power supply VCC3, a third optical coupler 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 socket, the second end of the third optocoupler J3 is connected to the ground end of the third voltage regulator T3, the fourth end of the third optocoupler J3 is grounded, and 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 optical coupler J3 can be a PC817 photoelectric coupler.

[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 stabilizer 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 tube Q2 and the output end of the first voltage stabilizer T1, the ground end of the second voltage stabilizer T2 is connected to the ground end and the ground end of the communication device, the output end of the second voltage stabilizer T2 is connected to the power supply end of the communication device, and 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-mentioned communication device can be composed of a single-chip microcomputer and an RS458 communication chip, can communicate wirelessly with the communication devices in the surrounding computers, and wirelessly transmit alarm signals when the anti-theft alarm module 8 outputs the fourth control signal, and can also receive alarm signals wirelessly output by the communication devices in the surrounding computers. The alarm signal is only generated by the communication device in the computer where the graphics card is stolen; the above-mentioned second voltage regulator T2 can use a 78 series three-terminal voltage regulator.

[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 switch tube V1, a second switch 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 tube 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 end of the first inverter INV1 and the A end of the first logic chip U1, the input end of the first inverter INV1 is connected to the third end of the second optocoupler J2, the B end of the first logic chip U1 is connected to the third end of the third optocoupler J3, the Y end of the first logic chip U1 is connected to the base of the first switch 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 switch 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 emitter of the first switch tube V1 and the emitter of the second switch tube V2 are both grounded, the collector of the first switch tube V1 is connected to the other end of the sound alarm, and the collector of the second switch tube V2 is connected to the other end of the alarm light.

[0065] In a specific embodiment, the first inverter INV1 may use a NOT gate chip; the first logic chip U1 may use an AND gate chip; the first switch tube V1 and the second switch tube V2 may use NPN transistors; the sound alarm may use a speaker; and the alarm light may be composed of an LED light.

[0066] In a graphics card power safety control circuit of the present embodiment, a DC power source interface is connected to the DC power source interface, and when the multi-channel switching power supply device performs multi-channel voltage regulation, the first power source and the second power source are output, the first power source is stabilized by the third voltage regulator T3, and supplies power to the graphics card power supply socket, and the second power source is stabilized by the second voltage regulator T2 and supplies power to the communication device. At this time, when the graphics card power supply socket is disconnected from the graphics card power supply socket, the third optical coupler J3 will be cut off, because the third optical coupler J3 needs to be in the state where the graphics card power supply socket is powered to accurately determine whether the graphics card power supply socket is disconnected from the graphics card power supply socket. The connection state makes the B end of the first logic chip U1 become high level, at this time the second optical coupler J2 is turned on, the first inverter INV1 controls the A end of the first logic chip U1 to become high level, the Y end of the first logic chip U1 controls the first switch tube V1 and the second switch tube V2 to be turned on, the sound alarm sounds an alarm, the alarm light gives a light alarm, and at the same time the eighth diode D8 transmits the signal to the signal receiving end of the communication device, so that the communication device wirelessly outputs the alarm signal. When the communication device in the surrounding computer receives the alarm signal, the surrounding computer will give a light alarm, so in When the communication device in the surrounding computer sends out an alarm signal because the graphics card power supply socket is disconnected from the graphics card power supply socket, the signal sending end of the communication device will control the second switch tube V2 to be turned on, and control the alarm light to give a light alarm. In addition, when the multi-way switch power supply device stops supplying power, the second optical coupler J2 is turned off, and the second power supply VCC2 triggers the first power tube Q1 to be turned on through the fourth resistor R4, and the first voltage regulator T1 is used to regulate the voltage, and power is supplied to the pyroelectric sensing device, the second voltage regulator T2, the sound alarm, the alarm light and the first logic chip U1, which are sensed by the pyroelectric sensing device. When human body pyroelectricity is sensed, the third power tube Q3 will be controlled to be turned on, and then power will be supplied to the graphics card power supply socket. The A terminal of the first logic chip U1 is at a 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 socket, the first logic chip U1 will control the first switch tube V1 and the second switch tube V2 to be turned on. At the same time, the power interface disconnects the DC power, the first optocoupler J1 is cut off, triggering the second power tube Q2 to be turned on, and the backup battery provides backup power to maintain the operation of the communication module 9 and the anti-theft alarm module 8, and after sensing human body pyroelectricity, it supplies power to the graphics card power supply module 6.

[0067] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0068] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes 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 supply 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 receive direct current power, perform multi-channel voltage stabilization on the direct current power, and output the first power and the second power; 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; The power supply control module is connected to the power supply control module and the first detection module, and is used to perform DC-DC regulation on the received direct current power and output the third power 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 power transmitted by the power supply control module and output a second control signal when the DC power transmitted by the power supply control module is not received; 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 power and receive third power, and when receiving the second control signal, transmit the backup power to the anti-theft alarm module and the communication module and perform human body pyroelectric induction, and when human body pyroelectricity is sensed, transmit the backup power or the third power 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 on the first power, the standby power or the third power 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 an audible and visual alarm when receiving the backup power and the third control signal, receiving the third power and the third control signal, and receiving the first control signal and the third control signal, and to 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 electric energy, the third electric energy or the backup electric energy and, when receiving the fourth control signal, output an alarm signal and control the surrounding computers to perform a wireless light alarm, and output a fifth control signal when wirelessly receiving an alarm signal transmitted wirelessly by the surrounding computers.

2. A graphics card power supply safety control circuit according to claim 1, characterized in that: 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 stabilizer, 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 switching 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 switching 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 ground end of the multi-way switching power supply device is connected to the other end of the second capacitor, the ground 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, and the cathode of the second diode is connected to the communication module.

3. A graphics card power supply safety control circuit according to claim 2, characterized in that: The first detection module includes a third resistor, a second optical coupler, a second power supply and a fourth resistor; The first end of the second optocoupler is connected to the output end of the multi-way switching 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 ground end of the multi-way switching power supply device, and the fourth end of the second optocoupler is grounded.

4. A graphics card power supply safety control circuit according to claim 3, characterized in that: The power supply control module includes a first power tube and a first voltage stabilizer; the second detection module includes a first resistor, a first optical coupler, a second resistor and a first power supply; The drain of the first power tube is connected to the first end of the power interface, the source of the first power tube 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 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.

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

6. A graphics card power supply safety control circuit according to claim 5, characterized in that: The connection detection module includes a third power supply, a third optical coupler and a fifth resistor; The first end of the third optocoupler is connected to the second end of the graphics card power socket, the second end of the third optocoupler is connected to the ground end of the third 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 connected to the third power supply through the fifth resistor.

7. A graphics card power supply safety control circuit according to claim 6, characterized in that: The communication module includes a fourth diode, a second voltage stabilizer and a communication device; The input end of the second 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 tube and the output end of the first regulator, the ground end of the second regulator is connected to the ground end and the ground end of the communication device, the output end of the second regulator is connected to the power supply end of the communication device, and the signal receiving end and the signal sending end of the communication device are both connected to the anti-theft alarm module.

8. A graphics card power supply safety control circuit 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 switch tube, a second switch tube, a sixth diode, a seventh diode, an eighth diode, a sound alarm and an alarm light; 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 light through the sixth resistor, the cathode of the fifth diode is connected to the output end of the first inverter and the A end of the first logic chip, the input end of the first inverter is connected to the third end of the second optocoupler, the B end of the first logic chip is connected to the third end of the third optocoupler, the Y end of the first logic chip is connected to the base of the first switch 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 switch 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 emitter of the first switch tube and the emitter of the second switch tube are both grounded, the collector of the first switch tube is connected to the other end of the sound alarm, and the collector of the second switch tube is connected to the other end of the alarm light.

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