WO2021147994A1 - 一种复位电路及相关电子设备 - Google Patents

一种复位电路及相关电子设备 Download PDF

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Publication number
WO2021147994A1
WO2021147994A1 PCT/CN2021/073280 CN2021073280W WO2021147994A1 WO 2021147994 A1 WO2021147994 A1 WO 2021147994A1 CN 2021073280 W CN2021073280 W CN 2021073280W WO 2021147994 A1 WO2021147994 A1 WO 2021147994A1
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WIPO (PCT)
Prior art keywords
current
pole
resistor
reset
optocoupler
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PCT/CN2021/073280
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English (en)
French (fr)
Inventor
朱飞龙
刘小兵
陈军
李大欣
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华为技术有限公司
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Publication of WO2021147994A1 publication Critical patent/WO2021147994A1/zh

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied

Definitions

  • the embodiments of the present application relate to the field of circuits, and in particular, to a reset circuit and related electronic equipment.
  • a reset button is integrated inside the electronic device.
  • the electronic device can be restored to the factory value through the reset button inside the electronic device.
  • the password of the electronic device is reset to the factory initial password. Therefore, the user can reuse the electronic device to carry out the corresponding business through the factory initial password.
  • a reset button is integrated inside the camera, and the operator can perform a reset operation through the reset button integrated inside the camera.
  • the embodiments of the present application provide a reset circuit and related electronic equipment.
  • the operator can remotely send a short-circuit signal to the network interface module to reset the electronic equipment.
  • the electronic device reset processing operation is less difficult, and the cost of the electronic device reset processing is low.
  • the first aspect of the present application provides a reset circuit, which includes: a detection trigger module, a reset trigger module, and a reset control module, a first endpoint and a second endpoint, the first endpoint and the second endpoint are used
  • the reset control module includes at least an optocoupler, a first resistor, and a second resistor
  • the detection trigger module receives the detection signal and triggers the The reset trigger module outputs the first current to the second terminal; when the first terminal and the second terminal are short-circuited through the network interface module, the first current flows through the short circuit Flows into the first terminal;
  • the P pole of the optocoupler is connected to the first end of the first resistor, the N pole of the optocoupler is grounded, the C pole of the optocoupler is connected to the processor, the The E pole of the optocoupler is grounded, and the second end of the first resistor is connected to the first end.
  • the first resistor limits the first current and derives a second current.
  • the current flows from the P pole of the optocoupler to the N pole of the optocoupler, triggering the conduction between the C pole and the E pole of the optocoupler, or the P pole of the optocoupler and the first terminal Connected, the N pole of the optocoupler is connected to the first end of the first resistor, the second end of the first resistor is grounded, and the first current flows from the P pole of the optocoupler to the first end of the optocoupler.
  • the N pole which triggers the conduction between the C pole and the E pole of the optocoupler, and the current derived from the N pole of the optocoupler is led to the ground after passing through the first resistor;
  • the first end of the second resistor is connected to the first power supply Connected, the second end of the second resistor is connected to the processor;
  • the first power supply outputs a third current, the second resistor limits the third current, and derives a fourth current, when the Before the C pole and E pole of the optocoupler are turned on, the fourth current is input to the processor, and the processor receives the first level signal; after the C pole and E pole of the optocoupler are turned on, the The fourth current is led to the ground through the branch where the C pole and the E pole of the optocoupler are located, and the level signal received by the processor is switched from the first level signal to the second level signal.
  • the first level signal is higher than the second level signal, and the second level signal is used to instruct the processor to restore the electronic device to an
  • the reset circuit included in the electronic device when the reset circuit included in the electronic device detects a short-circuit signal through the network interface module included in the electronic device, the reset circuit can switch the first-level signal to the second-level signal according to the short-circuit signal.
  • the processor restores the electronic device to the initial state according to the second level signal.
  • the operator can remotely send a short-circuit signal to the network interface module to reset the electronic device.
  • the electronic device reset processing operation is less difficult, and the cost of the electronic device reset processing is low.
  • the reset control module further includes a first capacitor; the first end of the first capacitor is connected to the C pole of the optocoupler, and the first The second end of the capacitor is connected to the E pole of the optocoupler; after the C pole and E pole of the optocoupler are turned on, the fourth current charges the first capacitor, and the first capacitor is charged after saturation. A capacitor is discharged, and the current generated after the discharge is led to the ground, so as to remove the signal jitter generated in the process of switching from the first level signal to the second level signal.
  • the fourth current charges the first capacitor, the first capacitor after the charge is saturated is discharged, and the current generated after the discharge is led to the ground.
  • This possible implementation method removes the signal jitter generated in the process of switching from the first-level signal to the second-level signal, reduces the probability of false triggering, and improves the accuracy of the circuit.
  • the reset trigger module includes at least a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), and a third resistor.
  • the detection trigger module includes a triode; the S pole of the MOS transistor is connected to the second power source, the D pole is connected to the second end, and the G pole is connected to the collector of the triode; the first end of the third resistor is connected to the The second power supply is connected, and the second end is connected to the G pole of the MOS transistor; when the triode is operating in the saturation region, the second power supply outputs a fifth current, and the fifth current includes the first branch and The second branch; the third resistor limits the current of the first branch, and derives a sixth current, the sixth current is led to the ground through the collector of the tertiary tube, and the third resistor shares the voltage Is the reset trigger voltage; the MOS tube is connected in parallel with the third resistor, the voltage of the MOS
  • the reset trigger module further includes a second capacitor; the first terminal of the second capacitor is connected to the second power source, and the second terminal is connected to the The G pole of the MOS transistor is connected; when the collector and emitter of the transistor are switched from an interrupted state to a conducting state, the first branch and the second branch charge the second capacitor, and the charge is saturated.
  • the second capacitor discharges and directs the current generated after the discharge to the ground.
  • the collector and emitter of the triode switch from an interrupted state to a conductive state
  • the first branch and the second branch charge the second capacitor, and the second capacitor after the charge is saturated is discharged .
  • the discharge speed of the second capacitor is relatively slow to prevent the current flowing into the triode from increasing suddenly.
  • the second capacitor inputs the current generated after the discharge into the collector of the triode, and then leads it to the ground through the emitter of the triode.
  • the reset trigger module includes at least a relay and a fourth resistor, the relay includes a coil and a relay switch, the detection trigger module includes a triode; the relay The first end of the fourth resistor is connected to the second power source, the second end is connected to the first end of the fourth resistor, and the third end is connected to the third power source; the second end of the fourth resistor is connected to the collector of the triode Connected; the first end of the coil is connected to the first end of the relay, and the second end is connected to the second end of the relay; the first end of the relay switch is connected to the third end of the relay, The second end is connected to the second end; when the collector and emitter of the triode are in a conducting state, the third power supply outputs a seventh current, and the seventh current passes through the first end of the relay Flowing into the coil, the second end of the relay derives an eighth current, and the eighth current is led to the ground by the collector of the triode after being limited by
  • the relay further includes a freewheeling diode; the negative electrode of the freewheeling diode is connected to the first end of the coil, and the positive electrode is connected to the second end of the coil.
  • the collector and emitter of the triode are switched from the on state to the off state, the electric energy in the coil generates a reverse electromotive force, the second end of the coil is positive, and the first end is Negative, the second end of the coil outputs a ninth current, passing through the anode of the diode, and the cathode of the diode derives a tenth current, the intensity of the tenth current is lower than the ninth current, and the coil continues Output current until the coil is exhausted.
  • the electrical energy in the coil generates a back electromotive force.
  • the second end of the coil is a positive pole, and the first end is a negative pole.
  • the second end of the coil outputs a ninth current, passing through the anode of the diode and the negative pole of the diode outputs a tenth current.
  • the intensity of the tenth current is lower than that of the ninth current.
  • the coil continues to output current until the coil is exhausted.
  • the freewheeling diode can consume the residual electromotive force in the coil to prevent the residual electromotive force in the coil from damaging other devices in the circuit and prevent the reset operation from being triggered by mistake. This possible implementation improves the safety of the reset circuit.
  • the above circuit the base of the triode is connected to the first end of the fifth resistor, the emitter of the triode is grounded; the second of the fifth resistor Terminal connected to the processor; the processor outputs a detection current, the fifth resistor limits the detection current, and after the current limitation, the second end of the fifth resistor is led to the base of the triode Trigger current, the trigger current is the level signal received by the base of the triode; when the level signal of the base of the triode is switched from the third level signal to the fourth level signal, the The fourth level signal is higher than the third level signal, the triode is switched from the off state to the working state, and the collector and emitter of the triode are conducted.
  • the detection trigger module further includes a sixth resistor; the first end of the sixth resistor is connected to the processor, and the first end of the sixth resistor is connected to the processor. The two ends are grounded; when the processor does not output a level signal to the base of the triode, the sixth resistor is used to ensure that the potential of the base of the triode is the same as the ground.
  • the sixth resistor is used to ensure that the potential of the base of the triode is the same as the ground. To prevent a large potential difference between the base and the emitter of the triode, so as to cause the collector and the emitter of the triode to conduct, leading to false triggering of the reset operation.
  • This possible implementation improves the accuracy of the reset circuit.
  • the network interface included in the network interface module is an RJ45 interface
  • the two different pins in the network interface are respectively numbered 1 in the RJ45 interface
  • the pin of the RJ45 interface is the pin numbered 8.
  • a second aspect of the present application provides a camera, which includes a power supply module, a reset circuit, a network interface module, and a processor.
  • the reset circuit includes a detection trigger module, a reset trigger module, and a reset control module, a first end point, and a The second end point, the first end point and the second end point are used to connect two different pins in the network interface included in the network interface module, and the reset circuit is any of the above-mentioned first aspect or the first aspect
  • One possible implementation is the reset circuit described in the section.
  • the reset circuit included in the camera when the reset circuit included in the camera detects a short circuit signal through the network interface module included in the camera, the reset circuit can switch the first level signal to the second level signal according to the short circuit signal.
  • the processor restores the camera to the initial state according to the second level signal.
  • the operator can remotely send a short-circuit signal to the network interface module to reset the camera. The camera reset processing operation is less difficult, and the cost of the camera reset processing is low.
  • the reset circuit included in the electronic device when the reset circuit included in the electronic device detects a short-circuit signal through the network interface module included in the electronic device, the reset circuit can switch the first-level signal to the second-level signal according to the short-circuit signal.
  • the processor restores the electronic device to the initial state according to the second level signal.
  • the operator can remotely send a short-circuit signal to the network interface module to reset the electronic device.
  • the electronic device reset processing operation is less difficult, and the cost of the electronic device reset processing is low.
  • FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an embodiment of a reset circuit provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • a reset button is integrated inside the electronic device.
  • the electronic device can be reset to the factory value through the reset button inside the electronic device.
  • the password of the electronic device is reset to the factory initial password. Therefore, the user can reuse the electronic device to carry out the corresponding business through the factory initial password.
  • a reset button is integrated inside the camera, and the operator can perform a reset operation through the reset button integrated inside the camera.
  • embodiments of the present application provide a reset circuit and related electronic equipment, which can reduce the reset cost of the electronic equipment.
  • the reset signal is a signal used to restore the electronic device to the initial state.
  • the circuit that generates the reset signal is the reset circuit.
  • equipment maintenance personnel can use some form of circuit to send a signal to a hardware-specific interface. After the hardware receives the signal through a specific interface, the hardware can restore the electronic device to its initial state. This process is a reset process. In this process, equipment maintenance personnel can use some form of circuit to send a signal to a hardware-specific interface, and this signal is a reset signal. The circuit that generates this signal is the reset circuit.
  • the reset circuit mentioned in the embodiment of the present application can be applied to any scene where a reset operation needs to be performed, and specifically, it can be applied to a video camera.
  • a camera also known as a computer camera, computer eye, electronic eye, etc.
  • the working principle of a camera is to convert an optical image signal into an electrical signal, and then store or transmit the electrical signal.
  • Cameras are widely used in video conferencing, telemedicine, and real-time monitoring.
  • the reset circuit included in the camera detects a short circuit signal through the network interface module included in the camera
  • the reset circuit can switch the first level signal to the second level signal according to the short circuit signal.
  • the processor restores the camera to the initial state according to the second level signal. Furthermore, the operator can remotely send a short-circuit signal to the network interface module to reset the camera. The camera reset processing operation is less difficult, and the cost of the camera reset processing is low.
  • Fig. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • an electronic device 100 provided by an embodiment of the present application includes: a power module 101, a reset module 102, a network interface module 103, and a processor module 104.
  • the reset module 102 is connected to the power supply module 101, the network interface module 103 and the processor module 104, and the processor module 104 is connected to the power supply module 101 and the network interface module 103.
  • the power module is a module that provides power to electronic equipment.
  • the power module provides the power required by all the components in the electronic device. Whether the current and voltage provided by the power module are stable will directly affect the performance and service life of the electronic equipment.
  • the reset module is a module that generates a reset signal, and the reset module includes a reset circuit. After the reset module generates the reset signal, the reset signal is input to the processor module, and the reset signal can instruct the processor module to restore the electronic device to the initial state.
  • the network interface module refers to the Ethernet interface.
  • the electronic device can establish network communication through the network interface module.
  • the physical structure of the network interface module may include a socket.
  • the network cable has a network cable plug matching the socket. When the network cable plug matching the socket is inserted into the socket included in the network interface module, the electronic device can establish network communication through the network interface module. After the network interface receives the short circuit signal, it will trigger the reset module to generate a reset signal.
  • the processor module is the computing and control core of electronic equipment, and the final execution unit for information processing and program operation. After the processor module receives the reset signal generated by the reset module, the processor module can restore the electronic device to the initial state.
  • FIG. 2 is a schematic diagram of an embodiment of a reset circuit provided by an embodiment of the present application.
  • the reset circuit mentioned in the embodiment of the present application includes: a detection trigger module, a reset trigger module, a reset control module, a first endpoint 1 and a second endpoint 2.
  • the reset control module includes at least an optocoupler U1, a first resistor R1, and a second resistor R2.
  • the first end point 1 is used to connect the first pin in the network interface included in the network interface module
  • the second end point 2 is used to connect the second pin in the network interface included in the network interface module, the first pin and the second pin Not the same.
  • the network interface included in the network interface module mentioned in the embodiment of the present application may be an RJ45 interface.
  • the first pin of the network interface included in the network interface module is the pin numbered 1 in the RJ45 interface
  • the second pin of the network interface included in the network interface module is the pin numbered 8 in the RJ45 interface.
  • the network interfaces included in the network interface module mentioned in the embodiments of the present application may also be RJ11 interfaces, RJ48 interfaces, RJ50 interfaces, TERA network interfaces, and other types of network interfaces, which are not specifically limited here.
  • the first pin and the second pin may be any two different pins in the network interface, which are not specifically limited here.
  • the P pole of the optocoupler is connected to the first end of the first resistor, the N pole of the optocoupler is grounded, the C pole of the optocoupler is connected to the processor, and the E pole of the optocoupler is grounded.
  • An optical coupler (optical coupler equipment, OCEP) is also called an opto-isolator or optocoupler, or optocoupler for short.
  • An optocoupler is a device that transmits electrical signals as a medium.
  • the light emitter and the light receiver are usually packaged in the same package.
  • the light-emitting device can be an infrared light-emitting diode
  • the light-receiving device can be a photosensitive semiconductor tube, a photosensitive switch, and a photosensitive resistor.
  • the photoelectric coupler that uses light as the medium to couple the input signal to the output end has the advantages of small size, long life, no contact, strong anti-interference ability, insulation between output and input, and unidirectional signal transmission. It is widely used in the circuit.
  • the second terminal of the first resistor is connected to the first terminal 1.
  • the first end of the second resistor is connected to the first power source, and the second end of the second resistor is connected to the processor.
  • the reset trigger module when the detection trigger module receives the detection signal, the reset trigger module is triggered to output the first current to the second terminal.
  • the first end point 1 is connected to the first pin of the network interface included in the network interface module
  • the second end point 2 is connected to the second pin of the network interface included in the network interface module.
  • the first terminal 1 and the second terminal 2 connected to them are also short-circuited.
  • the first current can be input to the first terminal 1 through the short circuit between the second terminal 2 and the first terminal 1. In this way, the first current flows from the first terminal 1 through the reset control module included in the reset circuit.
  • the first resistor R1 will limit the first current, and the current after the current limit is defined as the second current.
  • the second current flows into the P pole of the optocoupler U1, the optocoupler U1 is in a working state.
  • the second current flows from the P pole of the optocoupler U1 to the light emitting device included in the optocoupler U1, the light emitting device emits light, and the current flowing out of the light emitting device is led to the ground through the N pole of the optocoupler U1.
  • the light-emitting device included in the optocoupler U1 mentioned in the embodiment of the present application may be an infrared light-emitting diode or other light-emitting devices, which is not specifically limited here.
  • the light-receiving device included in the optocoupler U1 will change accordingly. If the light-receiving device is a photosensitive switch, the photosensitive switch will be closed after the light-emitting device emits light, and the C pole and E pole of the optocoupler U1 are switched from an interrupted state to a conducting state.
  • the first resistor limits the current in another way.
  • the P pole of the optocoupler is connected to the first terminal, the N pole of the optocoupler is connected to the first end of the first resistor, and the second end of the first resistor is grounded.
  • the first current flows from the P pole of the optocoupler to the N pole of the optocoupler.
  • the first resistor can also limit the current flowing in the branch where the first resistor is located, and the details are not repeated here.
  • the first power supply outputs the third current
  • the second resistor limits the third current
  • the current after the current limitation is defined as the fourth current.
  • the fourth current will be input to the processor, and the level signal received by the processor is the first level signal, and the first level signal is used to indicate the The electronic equipment is in normal working condition.
  • the C pole and the E pole of the optocoupler U1 are in a closed state, the fourth current will be led to the ground through the path between the C pole and the E pole of the optocoupler U1.
  • the level signal received by the processor is the second level signal.
  • the first level signal is higher than the second level signal, and the second level signal is used to instruct the processor to restore the electronic device to an initial state.
  • the first-level signal may be a high-level signal
  • the second-level signal may be a low-level signal, which is not specifically limited here.
  • the reset control module is composed of a combination of a first resistor R1, an optocoupler U1, and a second resistor R2, and there are other types of equivalent forms, which are not specifically limited here.
  • the reset circuit included in the electronic device when the reset circuit included in the electronic device detects a short-circuit signal through the network interface module included in the electronic device, the reset circuit can switch the first-level signal to the second-level signal according to the short-circuit signal.
  • the processor restores the electronic device to the initial state according to the second level signal.
  • the operator can remotely send a short-circuit signal to the network interface module to reset the electronic device.
  • the electronic device reset processing operation is less difficult, and the cost of the electronic device reset processing is low.
  • FIG. 3 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • the reset control module in this embodiment may further include a first capacitor C1.
  • the first end of the first capacitor C1 is connected to the C pole of the optocoupler U1, and the second end of the first capacitor C1 is connected to the E pole of the optocoupler U1.
  • the fourth current will charge the first capacitor C1 after the fourth current passes through the C pole and the E pole of the optocoupler U1.
  • the discharge process is relatively slow, and the current generated after the discharge is led to the ground.
  • the level signal received by the processor is switched from the first level signal to the second level signal.
  • the first capacitor slows down the switching speed of the level signal, so as to remove the jitter of the level signal generated in the process of switching from the first level signal to the second level signal.
  • connection manner of the capacitor C1 may also have other equivalent forms, which are not specifically limited here.
  • FIG. 4 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • the reset trigger module includes at least a MOS tube and a third resistor R3, and the detection trigger module includes a triode.
  • the S pole of the MOS tube is connected to the second power source, the D pole is connected to the second terminal, and the G pole is connected to the collector of the triode.
  • the first end of the third resistor is connected to the second power source, and the second end is connected to the G pole of the MOS tube.
  • the G pole of the MOS transistor When the triode is operating in the saturation region, the G pole of the MOS transistor is in a connected state with the ground, and the second power supply outputs a fifth current, which includes the first branch and the second branch.
  • the third resistor R3 limits the current of the first branch, the current after the current limit is defined as the sixth current, and the sixth current is input to the collector of the triode.
  • the triode works in the saturation region, and the collector and emitter of the triode are in a conducting state. After the sixth current passes through the collector of the triode, it is led to the ground by the emitter of the triode.
  • the voltage shared by the third resistor R3 is the reset trigger voltage.
  • the S pole and G pole of the MOS tube are connected in parallel with the third resistor, and the voltage between the S pole and the G pole of the MOS tube is the reset trigger voltage.
  • the reset trigger voltage triggers the conduction between the S pole and the D pole of the MOS tube, the second branch is input to the S pole of the MOS tube, and the D pole of the MOS tube derives the first current to the second terminal.
  • the first end point 1 is connected to the first pin of the network interface included in the network interface module
  • the second end point 2 is connected to the second pin of the network interface included in the network interface module.
  • the reset trigger module is composed of a combination of a MOS transistor and a third resistor, and there are other types of equivalent forms, which are not specifically limited here.
  • FIG. 5 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • the reset trigger module in this embodiment may further include a second capacitor C2.
  • the first end of the second capacitor C2 is connected to the second power source, and the second end is connected to the G pole of the MOS transistor.
  • the first branch and the second branch charge the second capacitor C2, and the second capacitor C2 after the charge is saturated is discharged.
  • the discharge speed of the second capacitor C2 is relatively slow to prevent the current flowing into the triode from increasing suddenly.
  • the second capacitor C2 inputs the current generated after the discharge into the collector of the triode, and then leads to the ground through the emitter of the triode.
  • connection manner of the capacitor C2 may also have other equivalent forms, which are not specifically limited here.
  • FIG. 6 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • the reset trigger module includes at least a relay and a fourth resistor R4, the relay includes a coil and a relay switch, and the detection trigger module includes a triode.
  • the first end of the relay is connected to the second power source, the second end is connected to the first end of the fourth resistor R4, and the third end is connected to the third power source.
  • the second end of the fourth resistor is connected to the collector of the triode.
  • the first end of the coil is connected to the first end of the relay, and the second end is connected to the second end of the relay.
  • the first terminal of the relay switch is connected with the third terminal of the relay, and the second terminal is connected with the second terminal.
  • the second power supply When the collector and emitter of the triode are in a conducting state, the second power supply outputs a seventh current, and the seventh current flows into the coil through the first end of the relay. After the seventh current passes through the coil, it flows from the second end of the coil to the second end of the relay. The second terminal of the relay draws an eighth current.
  • the fourth resistor R4 limits the eighth current, and after the eighth current is limited by the fourth resistor R4, it is input to the collector of the triode. The current flows from the collector of the triode to the emitter of the triode, and the current is led to the ground through the emitter of the triode.
  • the coil When the current output by the second power supply is input to the coil, the coil generates attractive force after being energized.
  • the attraction force switches the trigger relay switch from position a to position b, so that the third power source outputs the first current to the second terminal through the third terminal of the relay and the relay switch.
  • the first power supply, the second power supply, and the third power supply mentioned in the foregoing embodiment may be the same power supply or different power supplies, and the details are not limited here.
  • FIG. 7 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • the reset trigger module in this embodiment may also include a freewheeling diode.
  • the cathode of the freewheeling diode is connected to the first end of the coil, and the anode is connected to the second end of the coil.
  • the collector and emitter of the triode switch from the on state to the off state, the residual electric energy in the coil generates a reverse electromotive force, and the reverse electromotive force generated in the coil will be discharged in the closed loop.
  • the second end of the coil is positive and the first end is negative.
  • the second end of the coil will output a ninth current.
  • the ninth current passes through the anode of the diode, and the cathode of the diode draws a tenth current, the intensity of the tenth current is lower than the ninth current.
  • the coil continues to output current until the coil is exhausted.
  • FIG. 8 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • the detection trigger module includes at least a triode and a fifth resistor R5.
  • the base of the triode is connected to the first end of the fifth resistor R5, and the emitter of the triode is grounded.
  • the second end of the fifth resistor R5 is connected to the processor.
  • the processor When the processor confirms that the electronic device has not reached the reset condition, the processor outputs a trigger detection current to the base of the transistor. In this way, the triode works in the cut-off region, and the circuit between the collector and emitter of the triode is in an interrupted state.
  • the processor confirms that the electronic device reaches the reset detection condition, the processor outputs a detection current to the base of the transistor. In this way, the triode works in the saturation region, and the circuit between the collector and the emitter of the triode is in a conducting state.
  • the reset condition may be whether the electronic device receives a network signal.
  • the network signal is used to indicate that the electronic device has a network connection. After the processor confirms that the electronic device has not received the network signal, the processor confirms that the electronic device reaches the reset condition.
  • the reset condition may be the power-on duration after the electronic device is powered on.
  • the processor confirms that the time period after the electronic device is powered on does not exceed the first threshold, the processor confirms that the electronic device reaches the reset condition.
  • the reset condition may also be other types of conditions, and the specific conditions are not limited here.
  • the fifth resistor R5 limits the trigger detection current. After the current is limited, the second end of the fifth resistor R5 derives the trigger detection branch to the base of the triode, and the trigger detection branch is the third level signal received by the base of the triode.
  • the fifth resistor R5 limits the detection current. After the current is limited, the second end of the fifth resistor R5 outputs a trigger current to the base of the triode, and the trigger current is the fourth level signal received by the base of the triode.
  • the level signal of the base of the triode is switched from the third level signal to the fourth level signal, the fourth level signal is higher than the third level signal, the triode is switched from the off state to the working state, the collector of the triode Conducted with the emitter.
  • FIG. 9 is a schematic diagram of another embodiment of a reset circuit provided by an embodiment of the present application.
  • the detection and trigger module in this embodiment may further include a sixth resistor R6.
  • the first end of the sixth resistor R6 is connected to the processor, and the second end of the sixth resistor R6 is grounded.
  • the processor When the processor does not output a level signal to the base of the transistor, no current flows through the sixth resistor R6.
  • the first end of the sixth resistor R6 is connected to the base of the triode, and the second end is grounded. In this way, the sixth resistor R6 can ensure that the potential of the base of the triode is the same as the ground.
  • the sixth resistor R6 can prevent a large potential difference between the base and the emitter of the triode. If there is a large potential difference, the collector and emitter of the triode may be turned on, leading to false triggering of the reset operation.
  • the reset circuit included in the electronic device when the reset circuit included in the electronic device detects a short-circuit signal through the network interface module included in the electronic device, the reset circuit can switch the first-level signal to the second-level signal according to the short-circuit signal.
  • the processor restores the electronic device to the initial state according to the second level signal.
  • the operator can remotely send a short-circuit signal to the network interface module to reset the electronic device.
  • the electronic device reset processing operation is less difficult, and the cost of the electronic device reset processing is low.

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Abstract

本申请实施例公开了一种复位电路以及相关电子设备，应用于电路领域。本申请实施例包括：电子设备中包括的复位电路通过电子设备中包括的网络接口模块检测到短路信号时，复位电路可以根据短路信号将第一电平信号切换为第二电平信号。处理器根据第二电平信号将电子设备恢复为初始状态。进而，操作员远程向网络接口模块发送短路信号便可以实现电子设备的复位。电子设备复位处理操作难度小，电子设备复位处理的成本低。

Description

一种复位电路及相关电子设备
本申请要求于2020年1月23日提交中国专利局、申请号为202010077000.7、发明名称为“一种复位电路及相关电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及电路领域，特别涉及一种复位电路及相关电子设备。
背景技术
电子设备内部集成有复位按键。当用户忘记电子设备的密码时，可以通过电子设备内部的复位按键将电子设备回复出厂值。这样，电子设备的密码便重置为出厂初始密码。从而，用户可以通过出厂初始密码重新使用电子设备开展相应的业务。例如，摄像机内部便集成有复位按键，操作员可以通过摄像机内部集成的复位按键执行复位操作。
由于部分电子设备将会被安装在用户难以触及的位置，例如摄像机，操作员有时会将摄像机布置在电线杆的顶部或者屋顶的角落。因此，电子设备复位操作难度大，例如，用户需要使用登高车或者其他登高设备登高处对电子设备进行复位，电子设备复位处理成本高。
发明内容
本申请实施例提供了一种复位电路及相关电子设备，操作员可以通过远程向网络接口模块发送短路信号的方式实现电子设备的复位。电子设备复位处理操作难度小，电子设备复位处理的成本低。
本申请第一方面提供一种复位电路，该电路中包括：检测触发模块，复位触发模块以及复位控制模块、第一端点和第二端点，所述第一端点和所述第二端点用于连接网络接口模块中包括的网络接口中的不相同的两个针脚，所述复位控制模块至少包括光耦、第一电阻以及第二电阻；所述检测触发模块接收到检测信号，触发所述复位触发模块向所述第二端点输出所述第一电流；当所述第一端点与所述第二端点之间通过所述网络接口模块被短接，所述第一电流通过短接线路流入所述第一端点；所述光耦的P极与所述第一电阻的第一端连接，所述光耦的N极接地，所述光耦的C极与处理器连接，所述光耦的E极接地，所述第一电阻的第二端与所述第一端点连接，所述第一电阻对所述第一电流进行限流，并导出第二电流，所述第二电流由所述光耦的P极流向所述光耦的N极，触发所述光耦的C极与E极之间导通，或者，所述光耦的P极与所述第一端点连接，所述光耦的N极与所述第一电阻的第一端连接，所述第一电阻的第二端接地，所述第一电流由所述光耦P极流向所述光耦的N极，触发所述光耦的C极与E极之间导通，光耦的N极导出的电流经过所述第一电阻后导入地面；所述第二电阻的第一端与第一电源连接，所述第二电阻的第二端与处理器连接；所述第一电源输出第三电流，所述第二电阻对所述第三电流进行限流，并导出第四电流，当所述光耦的C极与E导通之前，所述第四电流输入所述处理器，所述处理器接收第一电平信号；当所述光耦的C极与E极导通之后，所述第四电流经过所述光耦的C极与E极所在的支路导入地面，所述处 理器接收的电平信号由所述第一电平信号切换为所述第二电平信号，所述第一电平信号高于所述第二电平信号，所述第二电平信号用于指示所述处理器将所述电子设备恢复初始状态。
本申请实施例中，电子设备中包括的复位电路通过电子设备中包括的网络接口模块检测到短路信号时，复位电路可以根据短路信号将第一电平信号切换为第二电平信号。处理器根据第二电平信号将电子设备恢复为初始状态。进而，操作员远程向网络接口模块发送短路信号便可以实现电子设备的复位。电子设备复位处理操作难度小，电子设备复位处理的成本低。
在第一方面的一种可能的实现方式中，上述电路：所述复位控制模块还包括第一电容；所述第一电容的第一端与所述光耦的C极连接，所述第一电容的第二端与所述光耦的E极连接；当所述光耦的C极与E极导通之后，所述第四电流对所述第一电容充电，充电饱和之后的所述第一电容放电，放电后产生的电流导入地面，以便于去除由所述第一电平信号切换为所述第二电平信号过程中产生的信号抖动。
该种可能的实现方式中，当光耦的C极与E极导通之后，第四电流对第一电容充电，充电饱和之后的第一电容放电，放电后产生的电流导入地面。该种可能的实现方式去除了由第一电平信号切换为第二电平信号过程中产生的信号抖动，减少了误触发的概率，提升了电路的准确性。
在第一方面的一种可能的实现方式中，上述电路：所述复位触发模块至少包括金属氧化物半场效晶体管(Metal-Oxide-Semiconductor Field-Effect Transistor,MOSFET)、第三电阻，所述检测触发模块包括三极管；所述MOS管的S极与第二电源连接，D极与所述第二端点连接，G极与所述三极管的集电极连接；所述第三电阻的第一端与所述第二电源连接，第二端与所述MOS管的G极连接；当所述三极管工作在饱和区时，所述第二电源输出第五电流，所述第五电流包括第一支流与第二支流；所述第三电阻对所述第一支流进行限流，并导出第六电流，所述第六电流通过所述三级管的集电极导入地面，所述第三电阻分担的电压为复位触发电压；所述MOS管与所述第三电阻并联，所述MOS管的电压为所述复位触发电压，所述复位触发电压触发所述MOS管的S极与D极导通，所述第二支流输入所述MOS管的S极，所述MOS管的D极向所述第二端点导出所述第一电流。
该种可能的实现方式中，提供了一种复位触发模块具体的实现方式，提升了方案的可实现性。
在第一方面的一种可能的实现方式中，上述电路：所述复位触发模块还包括第二电容；所述第二电容的第一端与所述第二电源连接，第二端与所述MOS管的G极连接；当所述三极管的集电极与发射极之间由中断状态切换为导通状态时，所述第一支流以及第二支流对所述第二电容充电，充电饱和之后的第二电容放电，将放电后产生的电流导入地面。
该种可能的实现方式中，当三极管的集电极与发射极之间由中断状态切换为导通状态的瞬间，第一支流以及第二支流对第二电容充电，充电饱和之后的第二电容放电。第二电容放电的速度较为缓慢，防止流入三级管的电流突然增大。第二电容将放电后产生的电流输入三极管的集电极，再通过三极管的发射极导入地面，该种可能的实现方式提升了电路的安全性。
在第一方面的一种可能的实现方式中，上述电路：所述复位触发模块至少包括继电器、第四电阻，所述继电器包括线圈以及继电开关，所述检测触发模块包括三极管；所述继电器的第一端与第二电源连接，第二端与所述第四电阻的第一端连接，第三端与第三电源连接； 所述第四电阻的第二端与所述三极管的集电极连接；所述线圈的第一端与所述继电器的第一端连接，第二端与所述继电器的第二端连接；所述继电开关的第一端与所述继电器第三端连接，第二端与所述第二端点连接；当所述三极管的集电极与发射极处于导通状态时，所述第三电源输出第七电流，所述第七电流通过所述继电器的第一端流入所述线圈，所述继电器的第二端导出第八电流，所述第八电流经过所述第四电阻限流之后由所述三极管的集电极导入地面；所述线圈通电之后产生吸引力，所述吸引力将触发所述继电开关闭合，以使所述第三电源通过所述继电器第三端以及所述继电开关向所述第二端点输出所述第一电流。
该种可能的实现方式中，提供了一种复位触发模块具体的实现方式，提升了方案的可实现性。
在第一方面的一种可能的实现方式中，上述电路：所述继电器还包括续流二极管；所述续流二极管的负极与所述线圈的第一端连接，正极与所述线圈的第二端连接；当所述三极管的集电极与发射极之间由导通状态切换为关闭状态时，所述线圈内的电能产生反向电动势，所述线圈的第二端为正极，第一端为负极，所述线圈的第二端输出第九电流，经过所述二极管的正极，所述二极管的负极导出第十电流，所述第十电流的强度低于所述第九电流，所述线圈持续输出电流，直至所述线圈电能耗尽。
该种可能的实现方式中，线圈内的电能产生反向电动势。线圈的第二端为正极，第一端为负极，线圈的第二端输出第九电流，经过二极管的正极，二极管的负极输出第十电流。第十电流的强度低于第九电流。线圈持续输出电流，直至线圈电能耗尽。续流二极管可以将线圈中残留的电动势消耗殆尽，以防止线圈中残留的电动势损害电路中的其他器件以及防止误触发复位操作。该种可能的实现方式提升了复位电路的安全性。
在第一方面的一种可能的实现方式中，上述电路：所述三极管的基极与所述第五电阻的第一端连接，所述三极管的发射极接地；所述第五电阻的第二端与所述处理器连接；所述处理器输出检测电流，所述第五电阻对所述检测电流进行限流，限流之后所述第五电阻的第二端向所述三极管的基极导出触发电流，所述触发电流便是三级管基极所接收到的电平信号；当所述三极管的基极的电平信号由第三电平信号切换为第四电平信号时，所述第四电平信号高于所述第三电平信号，所述三极管由截止状态切换为工作状态，所述三极管的集电极与发射极导通。
该种可能的实现方式中，提供了一种检测触发模块的具体的实现方式，提升了方案的可实现性。
在第一方面的一种可能的实现方式中，上述电路：所述检测触发模块还包括第六电阻；所述第六电阻的第一端与所述处理器连接，所述第六电阻的第二端接地；当所述处理器未向所述三极管的基极输出电平信号时，所述第六电阻用于确保所述三极管基极的电位与地相同。
该种可能的实现方式中，当处理器未向三极管的基极输出电平信号时，第六电阻用于确保三极管基极的电位与地相同。防止三极管的基极与发射极出现较大的电位差，以导致三极管的集电极与发射极导通，导致误触发复位操作。该种可能的实现方式提升了复位电路的准确性。
在第一方面的一种可能的实现方式中，上述电路：所述网络接口模块中包括的网络接口为RJ45接口，所述网络接口中的不相同的两个针脚分别为RJ45接口中编号为1的针脚与 RJ45接口中编号为8的针脚。
该种可能的实现方式中，提供了一种网络接口的具体形式，提升了方案的可实现性。
本申请第二方面提供一种摄像机，该摄像机中包括：电源模块、复位电路、网络接口模块以及处理器，所述复位电路包括检测触发模块，复位触发模块以及复位控制模块、第一端点和第二端点，所述第一端点和所述第二端点用于连接网络接口模块中包括的网络接口中的不相同的两个针脚，所述复位电路为上述第一方面或第一方面任意一种可能实现方式中所描述的复位电路。
本申请实施例中，摄像机中包括的复位电路通过摄像机中包括的网络接口模块检测到短路信号时，复位电路可以根据短路信号将第一电平信号切换为第二电平信号。处理器根据第二电平信号将摄像机恢复为初始状态。进而，操作员远程向网络接口模块发送短路信号便可以实现摄像机的复位。摄像机复位处理操作难度小，摄像机复位处理的成本低。
从以上技术方案可以看出，本申请实施例具有以下优点：
本申请实施例中，电子设备中包括的复位电路通过电子设备中包括的网络接口模块检测到短路信号时，复位电路可以根据短路信号将第一电平信号切换为第二电平信号。处理器根据第二电平信号将电子设备恢复为初始状态。进而，操作员远程向网络接口模块发送短路信号便可以实现电子设备的复位。电子设备复位处理操作难度小，电子设备复位处理的成本低。
附图说明
图1是本申请实施例提供的电子设备的结构示意图；
图2是本申请实施例提供的一种复位电路的一实施例示意图；
图3是本申请实施例提供的一种复位电路的另一实施例示意图；
图4是本申请实施例提供的一种复位电路的另一实施例示意图；
图5是本申请实施例提供的一种复位电路的另一实施例示意图；
图6是本申请实施例提供的一种复位电路的另一实施例示意图；
图7是本申请实施例提供的一种复位电路的另一实施例示意图；
图8是本申请实施例提供的一种复位电路的另一实施例示意图；
图9是本申请实施例提供的一种复位电路的另一实施例示意图。
具体实施方式
下面结合附图，对本申请的实施例进行描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。本领域普通技术人员可知，随着技术的发展和新场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
电子设备内部集成有复位按键。当用户忘记电子设备的密码时，可以通过电子设备内部 的复位按键将电子设备回复出厂值。这样，电子设备的密码便重置为出厂初始密码。从而，用户可以通过出厂初始密码重新使用电子设备开展相应的业务。例如，摄像机内部便集成有复位按键，操作员可以通过摄像机内部集成的复位按键执行复位操作。
由于部分电子设备将会被安装在用户难以触及的位置，例如摄像机，操作员有时会将摄像机布置在电线杆的顶部或者屋顶的角落。因此，电子设备复位操作难度大，例如，用户需要使用登高车或者其他登高设备登高处对电子设备进行复位，电子设备复位处理成本高。
针对现有的电子设备在复位时存在的上述问题，本申请实施例提供了一种复位电路以及相关电子设备，能够降低电子设备的复位成本。
复位信号(reset signal)，是一种用来使电子设备恢复到初始状态的信号。生成复位信号的电路，便是复位电路(reset circuit)。
在可编程的芯片、可编程控制器、微机等电子设备的运行过程中，电子设备有时候会出现程序跑飞或者程序跳转的情况。这时，设备维护人员可以采用某种形式的电路向某个硬件特定的接口发送一个信号。硬件通过特定接口接收到该信号之后，硬件可以使电子设备恢复到初始状态，这一过程就是复位过程。而在这一过程中，设备维护人员可以采用某种形式的电路向某个硬件特定的接口发送一个信号，该信号就是复位信号。产生该信号的电路，便是复位电路。
可以理解的是，本申请实施例所提及的复位电路可以应用于任何需要执行复位操作的场景中，具体的，可以应用于摄像机中。
摄像机(camera)，又称为电脑相机、电脑眼、电子眼等，是一种视频输入设备。摄像机的工作原理是将光学图像信号转变为电信号，进而对该电信号进行存储或者传输。摄像机被广泛的运用于视频会议，远程医疗以及实时监控等方面。
摄像机中包括的复位电路通过摄像机中包括的网络接口模块检测到短路信号时，复位电路可以根据短路信号将第一电平信号切换为第二电平信号。处理器根据第二电平信号将摄像机恢复为初始状态。进而，操作员远程向网络接口模块发送短路信号便可以实现摄像机的复位。摄像机复位处理操作难度小，摄像机复位处理的成本低。
图1是本申请实施例提供的电子设备的结构示意图。
请参阅图1，如图1所示，本申请实施例提供的电子设备100包括：电源模块101，复位模块102、网络接口模块103以及处理器模块104。
其中，复位模块102与电源模块101、网络接口模块103以及处理器模块104连接，处理器模块104与电源模块101以及网络接口模块103连接。
电源模块，是向电子设备提供功率的模块。电源模块提供电子设备中所有部件所需要的电能。电源模块所提供的电流和电压是否稳定，将直接影响电子设备的工作性能和使用寿命。
复位模块，是生成复位信号的模块，复位模块中包括复位电路。复位模块生成复位信号之后，将复位信号输入至处理器模块，复位信号可以指示处理器模块将电子设备恢复初始状态。
网络接口模块，是指以太网接口。本申请实施例中，电子设备可以通过网络接口模块建立网络通信。网络接口模块具有的物理结构可以包括插座。网线上具有与插座相匹配的网线插头，当与插座相匹配的网线插头插入网络接口模块中包括的插座中时，电子设备可以通过 网络接口模块建立网络通信。网络接口接收到短路信号之后，会触发复位模块生成复位信号。
处理器模块，是电子设备的运算和控制核心，是信息处理、程序运行的最终执行单元。处理器模块接收到复位模块生成的复位信号之后，处理器模块可以将电子设备恢复初始状态。
基于图1所描述的电子设备的结构示意图，对本申请实施例提供的复位电路进行描述。
图2是本申请实施例提供的一种复位电路的一实施例示意图。
请参阅图2，如图2所示，本申请实施例中所提及的复位电路包括：检测触发模块、复位触发模块、复位控制模块、第一端点1以及第二端点2。
其中，复位控制模块至少包括光耦U1、第一电阻R1以及第二电阻R2。
第一端点1用于连接网络接口模块中包括的网络接口中的第一针脚，第二端点2用于连接网络接口模块中包括的网络接口中的第二针脚，第一针脚与第二针脚不相同。
可选的，本申请实施例中提及的网络接口模块中包括的网络接口可以为RJ45接口。网络接口模块中包括的网络接口的第一针脚为RJ45接口中编号为1的针脚，网络接口模块中包括的网络接口的第二针脚为RJ45接口中编号为8的针脚。
可选的，本申请实施例中提及的网络接口模块中包括的网络接口还可以为RJ11接口、RJ48接口、RJ50接口、TERA网络接口以及其他类型的网络接口，具体此处不做限定。
可选的，第一针脚与第二针脚可以是网络接口中任意两个不相同的针脚，具体此处不做限定。
光耦的P极与第一电阻的第一端连接，光耦的N极接地，光耦的C极与处理器连接，光耦的E极接地。
光耦合器(opticalcoupler equipment，OCEP)，也被称为光电隔离器或光电耦合器，简称光耦。光耦是以光为媒介来传输电信号的器件，通常把发光器与受光器封装在同一管壳内。发光器可以是红外线发光二极管，受光器可以是光敏半导体管、光敏开关以及光敏电阻。当输入端加电信号时发光器发出光线，受光器接受光线之后就产生光电流，从输出端流出，从而实现了“电—光—电”转换。以光为媒介把输入端信号耦合到输出端的光电耦合器，由于它具有体积小、寿命长、无触点，抗干扰能力强，输出和输入之间绝缘，单向传输信号等优点，在数字电路上获得广泛的应用。
第一电阻的第二端与第一端点1连接。
第二电阻的第一端与第一电源连接，第二电阻的第二端与处理器连接。
本申请实施例中，检测触发模块接收到检测信号时，触发复位触发模块向第二端点输出第一电流。第一端点1与网络接口模块中包括的网络接口的第一针脚连接，第二端点2与网络接口模块中包括的网络接口的第二针脚连接。当网络接口模块中包括的第一针脚与第二针脚之间被短接时，则与之连接的第一端点1与第二端点2也被短接。这样，第二端点2输出第一电流之后，第一电流可以通过第二端点2与第一端点1之间的短接线路输入第一端点1。这样，第一电流便从第一端点1流经复位电路中包括的复位控制模块。
本申请实施例中，第一电流输入第一端点1之后，第一电阻R1将会对第一电流进行限流，限流之后的电流被定义为第二电流。第二电流流入光耦U1的P极之后，光耦U1处于工作状态。第二电流从光耦U1的P极流入光耦U1中所包括的发光器件，发光器件发光，从发光器件流出的电流由光耦U1的N极导入地面。
可选的，本申请实施例中所提及的光耦U1中包括的发光器件可以是红外线发光二极管，还可以是其他发光器件，具体此处不做限定。
本申请实施例中，当光耦U1中包括的发光器件发光之后，光耦U1中包括的受光器件将会相应的产生变化。若受光器件是光敏开关，则当发光器件发光之后，光敏开关则会闭合，光耦U1的C极与E极之间由中断状态切换为导通状态。
可选的，本实施例中第一电阻对电流进行限流还可以有另外一种实现方式。光耦的P极与第一端点连接，光耦的N极与第一电阻的第一端连接，第一电阻的第二端接地，第一电流由光耦P极流向光耦的N极，触发光耦的C极与E极之间导通，光耦的N极导出的电流经过第一电阻后导入地面。第一电阻同样可以实现对第一电阻所在的支路中流通的电流进行限流，具体此处不做赘述。
本申请实施例中，第一电源输出第三电流，第二电阻对第三电流进行限流，限流之后的电流被定义为第四电流。当光耦U1的C极与E极之间处于中断状态时，第四电流将输入处理器，处理器接收到的电平信号为第一电平信号，该第一电平信号用于指示该电子设备处于正常工作状态。当光耦U1的C极与E极之间处于闭合状态时，第四电流将通过光耦U1的C极与E极之间的通路导入地面。处理器接收到的电平信号为第二电平信号。该第一电平信号高于第二电平信号，该第二电平信号用于指示处理器将电子设备恢复初始状态。
可选的，该第一电平信号可以为高电平信号，第二电平信号可以为低电平信号，具体此处不做限定。
本申请实施例中，复位控制模块由中第一电阻R1，光耦U1以及第二电阻R2组合而成，还有其他类型的等效形式，具体此处不作限定。
本申请实施例中，电子设备中包括的复位电路通过电子设备中包括的网络接口模块检测到短路信号时，复位电路可以根据短路信号将第一电平信号切换为第二电平信号。处理器根据第二电平信号将电子设备恢复为初始状态。进而，操作员远程向网络接口模块发送短路信号便可以实现电子设备的复位。电子设备复位处理操作难度小，电子设备复位处理的成本低。
图3是本申请实施例提供的一种复位电路的另一实施例示意图。
请参阅图3，基于上述实施例中说明的如图2所示的复位控制模块，本实施例中复位控制模块还可以包括第一电容C1。
第一电容C1的第一端与光耦U1的C极连接，第一电容C1的第二端与光耦U1的E极连接。
当光耦U1的C极与E极由中断状态切换为导通状态的瞬间，第四电流经过光耦U1的C极与E极之后，第四电流会对第一电容C1充电。充电饱和之后的第一电容C1放电，放电的过程较为缓慢，放电后产生的电流导入地面。当光耦U1的C极与E极之间导通之后，处理器接收到的电平信号由第一电平信号切换为第二电平信号。第一电容会减缓电平信号切换的速度，以便于去除由第一电平信号切换为第二电平信号过程中产生的电平信号的抖动。
本申请实施例中，电容器C1的连接方式还可以有其他的等效形式，具体此处不做限定。
图4是本申请实施例提供的一种复位电路的另一实施例示意图。
请参阅图4，复位触发模块至少包括MOS管、第三电阻R3，检测触发模块包括三极管。
MOS管的S极与第二电源连接，D极与第二端点连接，G极与三极管的集电极连接。
第三电阻的第一端与第二电源连接，第二端与MOS管的G极连接。
当三极管工作在截止区时，MOS管的G极与地线之间是断路，则复位触发模块中并未形成闭合回路。复位触发模块中没有电流流通，复位触发模块并非处于工作状态。
当三极管工作在饱和区时，MOS管的G极与地线之间处于连通状态，第二电源输出第五电流，第五电流包括第一支流与第二支流。
第三电阻R3对第一支流进行限流，限流之后的电流被定义为第六电流，第六电流输入三级管的集电极。三极管工作在饱和区，三极管的集电极与发射极处于导通状态。第六电流经过三极管的集电极之后，由三级管的发射极导入地面。第三电阻R3分担的电压为复位触发电压。
MOS管的S极和G极与第三电阻并联，MOS管S极和G极之间的电压为复位触发电压。复位触发电压触发MOS管的S极与D极导通，第二支流输入MOS管的S极，MOS管的D极则向第二端点导出第一电流。
第一端点1与网络接口模块中包括的网络接口的第一针脚连接，第二端点2与网络接口模块中包括的网络接口的第二针脚连接。当网络接口模块中包括的第一针脚与第二针脚之间被短接时，则与之连接的第一端点1与第二端点2也被短接。则第一电流可以从第二端点2流入第一端点1，第一电流可以进入复位控制模块。
本申请实施例中，复位触发模块由MOS管以及第三电阻组合而成，还有其他类型的等效形式，具体此处不作限定。
图5是本申请实施例提供的一种复位电路的另一实施例示意图。
基于上述实施例中说明的如图4所示的复位触发模块，本实施例中复位触发模块还可以包括第二电容C2。
第二电容C2的第一端与第二电源连接，第二端与MOS管的G极连接。
当三极管的集电极与发射极之间由中断状态切换为导通状态的瞬间，第一支流以及第二支流对第二电容C2充电，充电饱和之后的第二电容C2放电。第二电容C2放电的速度较为缓慢，防止流入三级管的电流突然增大。第二电容C2将放电后产生的电流输入三极管的集电极，再通过三极管的发射极导入地面。
本申请实施例中，电容器C2的连接方式还可以有其他的等效形式，具体此处不做限定。
图6是本申请实施例提供的一种复位电路的另一实施例示意图。
请参阅图6，复位触发模块至少包括继电器、第四电阻R4，继电器包括线圈以及继电开关，检测触发模块包括三极管。
继电器的第一端与第二电源连接，第二端与第四电阻R4的第一端连接，第三端与第三电源连接。
第四电阻的第二端与三极管的集电极连接。
线圈的第一端与继电器的第一端连接，第二端与继电器的第二端连接。
继电开关的第一端与继电器第三端连接，第二端与第二端点连接。
当三极管的集电极与发射极处于导通状态时，第二电源输出第七电流，第七电流通过继电器的第一端流入线圈。第七电流经过线圈之后，从线圈第二端流向继电器的第二端。继电器的第二端导出第八电流。第四电阻R4对第八电流进行限流，第八电流经过第四电阻R4限 流之后，输入三极管的集电极。电流由三极管的集电极流入三极管的发射极，电流通过三极管的发射极导入地面。
当第二电源输出的电流输入线圈时，线圈通电之后产生吸引力。吸引力将触发继电开关由a位置切换为b位置，以使第三电源通过继电器第三端以及继电开关向第二端点输出第一电流。
可选的，上述实施例中所提及的第一电源、第二电源以及第三电源可以是同一个电源，也可以是不同的电源，具体此处不做限定。
图7是本申请实施例提供的一种复位电路的另一实施例示意图。
请参阅图7，基于上述实施例中说明的如图6所示的复位触发模块，本实施例中复位触发模块还可以包括续流二极管。
续流二极管的负极与线圈的第一端连接，正极与线圈的第二端连接。
当三极管的集电极与发射极之间由导通状态切换为断开状态时，线圈内残留的电能产生反向电动势，线圈内产生的反向电动势将在闭合回路内放电。线圈放电时，线圈的第二端为正极，第一端为负极。线圈的第二端将会输出第九电流。第九电流经过二极管的正极，二极管的负极导出第十电流，第十电流的强度低于第九电流。线圈持续输出电流，直至线圈电能耗尽。
图8是本申请实施例提供的一种复位电路的另一实施例示意图。
请参阅图8,检测触发模块至少包括三极管以及第五电阻R5。
三极管的基极与第五电阻R5的第一端连接，三极管的发射极接地。
第五电阻R5的第二端与处理器连接。
当处理器确认电子设备未达到复位条件时，处理器向三极管基极输出触发检测电流。这样，三极管工作在截止区，三极管的集电极与发射极之间的电路为中断状态。当处理器确认电子设备达到复位检测条件时，处理器向三极管基极输出检测电流。这样，三极管工作在饱和区，三极管的集电极与发射极之间的电路为导通状态。
可选的，复位条件可以是电子设备是否收到网络信号。网络信号用于指示电子设备存在网络连接。当处理器确认电子设备未接收到网络信号之后，处理器确认电子设备达到复位条件。
可选的，复位条件可以是电子设备上电之后的上电时长。当处理器确认电子设备上电之后的时长不超过第一阈值的时候，处理器确认电子设备达到复位条件。
可选的，复位条件还可以是其他类型的条件，具体此处不做限定。
处理器输出触发检测电流之后，第五电阻R5对触发检测电流进行限流。限流之后，第五电阻R5的第二端向三极管的基极导出触发检测支流，触发检测支流便是三级管基极所接收到的第三电平信号。
处理器输出检测电流之后，第五电阻R5对检测电流进行限流。限流之后，第五电阻R5的第二端向三极管的基极输出触发电流，触发电流便是三级管基极所接收到的第四电平信号。
当三极管的基极的电平信号由第三电平信号切换为第四电平信号时，第四电平信号高于第三电平信号，三极管由截止状态切换为工作状态，三极管的集电极与发射极导通。
图9是本申请实施例提供的一种复位电路的另一实施例示意图。
请参阅图9，基于上述实施例中说明的如图8所示的检测触发模块，本实施例中检测触发模块还可以包括第六电阻R6。
第六电阻R6的第一端与处理器连接，第六电阻R6的第二端接地。
当处理器未向三极管的基极输出电平信号时，第六电阻R6中没有电流通过。第六电阻R6的第一端与三级管的基极连接，第二端接地。这样，第六电阻R6可以确保三极管基极的电位与地相同。第六电阻R6可以防止三极管的基极与发射极出现较大的电位差。若出现较大的电位差将有可能导致三极管的集电极与发射极导通，导致误触发复位操作。
本申请实施例中，电子设备中包括的复位电路通过电子设备中包括的网络接口模块检测到短路信号时，复位电路可以根据短路信号将第一电平信号切换为第二电平信号。处理器根据第二电平信号将电子设备恢复为初始状态。进而，操作员远程向网络接口模块发送短路信号便可以实现电子设备的复位。电子设备复位处理操作难度小，电子设备复位处理的成本低。
以上对本申请实施例所提供的复位电路进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想。同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (10)

  1. 一种复位电路，其特征在于，包括：检测触发模块，复位触发模块以及复位控制模块、第一端点和第二端点，所述第一端点和所述第二端点用于连接网络接口模块中包括的网络接口中的不相同的两个针脚，所述复位控制模块至少包括光耦、第一电阻以及第二电阻；
    所述检测触发模块接收到检测信号，触发所述复位触发模块向所述第二端点输出所述第一电流；
    当所述第一端点与所述第二端点之间通过所述网络接口模块被短接，所述第一电流通过短接线路流入所述第一端点；
    所述光耦的P极与所述第一电阻的第一端连接，所述光耦的N极接地，所述光耦的C极与处理器连接，所述光耦的E极接地，所述第一电阻的第二端与所述第一端点连接，所述第一电阻对所述第一电流进行限流，并导出第二电流，所述第二电流由所述光耦的P极流向所述光耦的N极，触发所述光耦的C极与E极之间导通，或者，所述光耦的P极与所述第一端点连接，所述光耦的N极与所述第一电阻的第一端连接，所述第一电阻的第二端接地，所述第一电流由所述光耦P极流向所述光耦的N极，触发所述光耦的C极与E极之间导通，光耦的N极导出的电流经过所述第一电阻后导入地面；
    所述第二电阻的第一端与第一电源连接，所述第二电阻的第二端与处理器连接；
    所述第一电源输出第三电流，所述第二电阻对所述第三电流进行限流，并导出第四电流，当所述光耦的C极与E导通之前，所述第四电流输入所述处理器，所述处理器接收第一电平信号；
    当所述光耦的C极与E极导通之后，所述第四电流经过所述光耦的C极与E极所在的支路导入地面，所述处理器接收的电平信号由所述第一电平信号切换为所述第二电平信号，所述第一电平信号高于所述第二电平信号，所述第二电平信号用于指示所述处理器将所述电子设备恢复初始状态。
  2. 根据权利要求1所述的复位电路，其特征在于，所述复位控制模块还包括第一电容；
    所述第一电容的第一端与所述光耦的C极连接，所述第一电容的第二端与所述光耦的E极连接；
    当所述光耦的C极与E极导通之后，所述第四电流对所述第一电容充电，充电饱和之后的所述第一电容放电，放电后产生的电流导入地面，以便于去除由所述第一电平信号切换为所述第二电平信号过程中产生的信号抖动。
  3. 根据权利要求1或2所述的复位电路，其特征在于，所述复位触发模块至少包括金属氧化物半场效晶体管MOS管、第三电阻，所述检测触发模块包括三极管；
    所述MOS管的S极与第二电源连接，D极与所述第二端点连接，G极与所述三极管的集电极连接；
    所述第三电阻的第一端与所述第二电源连接，第二端与所述MOS管的G极连接；
    当所述三极管工作在饱和区时，所述第二电源输出第五电流，所述第五电流包括第一支流与第二支流；
    所述第三电阻对所述第一支流进行限流，并导出第六电流，所述第六电流通过所述三级管的集电极导入地面，所述第三电阻分担的电压为复位触发电压；
    所述MOS管与所述第三电阻并联，所述MOS管的电压为所述复位触发电压，所述复位触发电压触发所述MOS管的S极与D极导通，所述第二支流输入所述MOS管的S极，所述MOS管的D极向所述第二端点导出所述第一电流。
  4. 根据权利要求3所述的复位电路，其特征在于，所述复位触发模块还包括第二电容；
    所述第二电容的第一端与所述第二电源连接，第二端与所述MOS管的G极连接；
    当所述三极管的集电极与发射极之间由中断状态切换为导通状态时，所述第一支流以及第二支流对所述第二电容充电，充电饱和之后的第二电容放电，将放电后产生的电流导入地面。
  5. 根据权利要求1或2所述的复位电路，其特征在于，所述复位触发模块至少包括继电器、第四电阻，所述继电器包括线圈以及继电开关，所述检测触发模块包括三极管；
    所述继电器的第一端与第二电源连接，第二端与所述第四电阻的第一端连接，第三端与第三电源连接；
    所述第四电阻的第二端与所述三极管的集电极连接；
    所述线圈的第一端与所述继电器的第一端连接，第二端与所述继电器的第二端连接；
    所述继电开关的第一端与所述继电器第三端连接，第二端与所述第二端点连接；
    当所述三极管的集电极与发射极处于导通状态时，所述第三电源输出第七电流，所述第七电流通过所述继电器的第一端流入所述线圈，所述继电器的第二端导出第八电流，所述第八电流经过所述第四电阻限流之后由所述三极管的集电极导入地面；
    所述线圈通电之后产生吸引力，所述吸引力将触发所述继电开关闭合，以使所述第三电源通过所述继电器第三端以及所述继电开关向所述第二端点输出所述第一电流。
  6. 根据权利要求5所述的复位电路，其特征在于，所述继电器还包括续流二极管；
    所述续流二极管的负极与所述线圈的第一端连接，正极与所述线圈的第二端连接；
    当所述三极管的集电极与发射极之间由导通状态切换为关闭状态时，所述线圈内的电能产生反向电动势，所述线圈的第二端为正极，第一端为负极，所述线圈的第二端输出第九电流，经过所述二极管的正极，所述二极管的负极导出第十电流，所述第十电流的强度低于所述第九电流，所述线圈持续输出电流，直至所述线圈电能耗尽。
  7. 根据权利要求1至6所述的复位电路，其特征在于，所述检测触发模块至少包括所述三极管以及第五电阻；
    所述三极管的基极与所述第五电阻的第一端连接，所述三极管的发射极接地；
    所述第五电阻的第二端与所述处理器连接；
    所述处理器输出检测电流，所述第五电阻对所述检测电流进行限流，限流之后所述第五电阻的第二端向所述三极管的基极导出触发电流，所述触发电流便是三级管基极所接收到的电平信号；
    当所述三极管的基极的电平信号由第三电平信号切换为第四电平信号时，所述第四电平信号高于所述第三电平信号，所述三极管由截止状态切换为工作状态，所述三极管的集电极与发射极导通。
  8. 根据权利要求1至3所述的复位电路，其特征在于，所述检测触发模块还包括第六电阻；
    所述第六电阻的第一端与所述处理器连接，所述第六电阻的第二端接地；
    当所述处理器未向所述三极管的基极输出电平信号时，所述第六电阻用于确保所述三极管基极的电位与地相同。
  9. 根据权利要求1至8所述的复位电路，其特征在于，所述网络接口模块中包括的网络接口为RJ45接口，所述网络接口中的不相同的两个针脚分别为RJ45接口中编号为1的针脚与RJ45接口中编号为8的针脚。
  10. 一种电子设备，其特征在于，所述电子设备包括：电源模块、复位电路、网络接口模块以及处理器，所述复位电路包括检测触发模块，复位触发模块以及复位控制模块、第一端点和第二端点，所述第一端点和所述第二端点用于连接网络接口模块中包括的网络接口中的不相同的两个针脚，所述复位电路为如权利要求1至9中任一项所述的复位电路。
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