CN110970865A - Hot-plug protection system and method - Google Patents
Hot-plug protection system and method Download PDFInfo
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- CN110970865A CN110970865A CN201811152028.1A CN201811152028A CN110970865A CN 110970865 A CN110970865 A CN 110970865A CN 201811152028 A CN201811152028 A CN 201811152028A CN 110970865 A CN110970865 A CN 110970865A
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
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Abstract
The application provides a hot extraction protection system, including the terminal body, the elastic component, first electron device, the current detection module, control module and switching power supply, elastic component and first electron device set up on the terminal body, when the elastic component is used for the terminal to extract, promote first electron device and make its power socket and electric wire earthing terminal GND socket electricity on the terminal body be connected, first electron device is used for changing the current value between power socket and the GND socket, the current detection module is used for current change information between with the power socket that detects and the GND socket and sends to control module, control module is used for receiving current change information after, the control switching power supply outage. The hot-plug protection system that this application embodiment provided changes the current value of power socket and GND socket through first electron device, can make the current detection module detect the current variation, and then carries out the power-off protection, avoids electrified equipment to receive surge current's impact and damage.
Description
Technical Field
The present application relates to the field of circuit control technologies, and in particular, to a hot plug protection system and method.
Background
Hot extraction, i.e., live extraction, refers to overshoot that takes out a certain electronic device from a live device. During the hot-plug process, a large surge current is usually generated instantaneously, and the generated over current can damage the electronic devices or the charged equipment. In practical use, the situation of hot extraction cannot be avoided due to unconscious operation of an operator or button failure and the like, so that the charged equipment is damaged.
Many electronic devices, instruments and the like have no practical and reliable hot plug protection design, so that hot plug can still occur inevitably in practice due to conditions such as unconscious operation, misoperation or button failure of a user.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a hot-plug protection system and method, which can prevent a charged device from being damaged due to surge current.
In a first aspect, an embodiment of the present application provides a thermal extraction protection system, which includes a terminal body, an elastic element, a first electronic device, a current detection module, a control module, and a switching power supply, where the elastic element and the first electronic device are disposed on the terminal body;
the elastic piece is used for pushing the first electronic device to be electrically connected with a power supply socket on the terminal body and a wire grounding end GND socket when the terminal is pulled out;
the first electronic device is used for changing the current value between the power supply socket and the GND socket.
And the current detection module is used for sending the detected current change information between the power socket and the GND socket to the control module.
And the control module is used for controlling the power-off of the switching power supply after receiving the current change information.
In combination with the first aspect, the present examples provide a first possible implementation manner of the first aspect, where,
the first electronic device is arranged on the connecting rod;
the connecting rod is used for driving the first electronic device to be electrically connected between the power socket and the GND socket when the connecting rod is pushed by the elastic piece.
In combination with the first possible implementation manner of the first aspect, the present application provides a second possible implementation manner of the first aspect, wherein,
the method comprises the following steps: metal contacts are respectively arranged at the two ends of the connecting rod,
the metal contact is used for electrically connecting the first electronic device with the power socket and the GND socket.
In combination with the first aspect, the present examples provide a third possible implementation manner of the first aspect, wherein,
further comprising: a buckle arranged on the terminal body,
the buckle is used for transmitting the received external force to the elastic piece.
In combination with the first aspect, the present examples provide a fourth possible implementation manner of the first aspect, wherein,
also included is a second electronic device connected in series between the power outlet and the GND outlet.
In a second aspect, an embodiment of the present application further provides a hot plug protection method, which is applied to a hot plug protection system, where the system includes a terminal body, an elastic component, a first electronic device, a current detection module, a control module, and a switching power supply, and the elastic component and the first electronic device are disposed on the terminal body;
the method comprises the following steps:
the elastic piece pushes the first electronic device so that the first electronic device is electrically connected with a power supply socket on the terminal body and a wire grounding end (GND) socket;
the current detection system sends the detected current change information of the power supply socket and the GND socket to the control module;
and after receiving the current change information, the control module controls the switching power supply to be powered off.
In combination with the second aspect, the present embodiments provide a first possible implementation manner of the second aspect, wherein,
the elastic piece pushes the first electronic device to make the first electronic device electrically connected with a power socket and a wire grounding end GND socket on the terminal body, and the elastic piece comprises:
the elastic piece drives the first electronic device to be electrically connected with the power socket on the terminal body and the GND socket of the electric wire grounding end through pushing the connecting rod.
In combination with the first possible implementation manner or the second possible implementation manner of the second aspect, the present application provides a third possible implementation manner of the second aspect, wherein,
the connecting rod drives first electron device with power socket and electric wire earthing terminal GND socket electricity on the terminal body are connected, include:
the connecting rod electrically connects the first electronic device with the power socket and the GND socket through metal contacts arranged at two ends.
In combination with the second aspect, the present examples provide a fourth possible implementation manner of the second aspect, wherein,
still include, through promoting the setting buckle on the terminal body to promote the elastic component, make the elastic component promote first electron device.
In combination with the second aspect, the present application provides a fifth possible implementation manner of the second aspect, wherein,
the method also comprises the step of changing the current value between the first electronic device and the power supply socket and the wire grounding end GND socket on the terminal body by serially connecting the second electronic device between the first electronic device and the power supply socket and the wire grounding end GND socket on the terminal body.
Based on a hot plug protection system that above-mentioned embodiment provided, including the terminal body, the elastic component, first electron device, the current detection module, control module and switching power supply, elastic component and first electron device set up on the terminal body, when the elastic component is used for the terminal to extract, promote first electron device and make it be connected with power socket and electric wire earthing terminal GND socket electricity on the terminal body, first electron device is used for changing the current value between power socket and the GND socket, the current detection module is used for sending the current change information between power socket and the GND socket that detects to control module, control module is used for receiving the current change information after, the control module control switching power supply outage. The embodiment of the application provides a hot plug protection system, when the terminal was extracted, first electron device electric connection to with power socket and electric wire earthing terminal GND socket between, first electron device can change the current value of power socket and electric wire earthing terminal GND socket, the current detection module detects the current change, and then cuts off the power supply through control module control switch power, avoid electrified equipment to receive surge current's impact and damage.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 illustrates a flow chart of the operation of a thermal unplug protection system provided by an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating a top view of a thermal unplug protection system according to an embodiment of the present application;
FIG. 3 is a schematic side view of a thermal unplug protection system according to an embodiment of the present application;
fig. 4 shows a schematic flow chart of a hot plug protection method provided in an embodiment of the present application.
Icon: 201, a terminal body; 202, a wire grounding end GND socket; 203, a power socket; 204, Pin point; 205, metal contacts; 206, a connecting rod; 207, resistance; 208, a compression spring; 209, buckling;
301, a terminal body; 302, a compression spring; 303, buckling.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
Hot-extraction, i.e., live-extraction, refers to the process of removing an electronic device from live equipment. During the hot-plug process, a large surge current is usually generated instantaneously, and the generated over current can damage the electronic devices or the charged equipment. In practical use, due to reasons such as unconscious operation of an operator or button failure, when testing or maintaining an electronic device or live equipment, the situation of hot extraction cannot be avoided, and therefore the live equipment is damaged.
Many electronic devices, instruments and the like have no practical and reliable hot plug protection design, so that hot plug can still occur inevitably in practice due to conditions such as unconscious operation, misoperation or button failure of a user.
The current hot-plug protection system usually detects whether the current is abnormal only through a current detection module to carry out power-off protection.
Considering that the surge current generated instantaneously when the heat is extracted is too fast, the electrified equipment is easily damaged by the impact of the surge current. Based on this, the embodiments of the present application provide a system and a method for protecting against hot unplugging, which are described below by way of example.
To facilitate understanding of the present embodiment, a thermal unplugging protection system disclosed in the embodiments of the present application will be described in detail.
The hot plug protection system provided by the embodiment of the application comprises a terminal body, an elastic piece, a first electronic device, a current detection module, a control module and a switching power supply, wherein the elastic piece and the first electronic device are arranged on the terminal body;
the elastic piece is used for pushing the first electronic device to be electrically connected with a power supply socket on the terminal body and a GND socket at the grounding end of the electric wire when the terminal is pulled out;
a first electronic device for changing a current value between the power outlet and the GND outlet.
And the current detection module is used for sending the detected current change information between the power socket and the GND socket to the control module.
And the control module is used for controlling the power-off of the switching power supply after receiving the current change information.
As shown in fig. 1, the operation principle of the hot-plug protection system 101 is as follows: when the terminal 102 is pulled out, the first electronic device is pushed to be electrically connected between the power socket on the terminal body and the wire grounding end GND socket, the first electronic device can change the current value between the power socket and the GND socket, the current detection module 103 is used for detecting the current change information between the power socket and the GND socket and sending the current change information to the control module 104, and the control module 104 controls the switching power supply 105 to be powered off after receiving the current change information.
The terminal here includes a terminal body, an elastic member provided on the terminal body, and a first electronic component.
In the concrete implementation, still be provided with the connecting rod on the terminal body, first electron device sets up on the connecting rod, and when receiving the thrust of elastic component, the connecting rod drives first electron device and makes it be connected with power socket and GND socket electricity.
Here, drive first electron device through the connecting rod, can avoid first electron device and terminal body direct contact to produce the friction, damage first electron device and terminal body. And the connecting rod is an insulator, and the first electronic device is arranged on the connecting rod, so that the situation that the peripheral circuit is damaged due to the fact that the first electronic device leaks electricity and conducts electricity through the connecting rod can be avoided.
In specific implementation, metal contacts are respectively arranged at two ends of the connecting rod, and the first electronic device is electrically connected with the power socket and the GND socket through the metal contacts. The power socket and the GND socket are both provided with Pin needles, and Pin points are metal substances used for completing electric transmission. Specifically, the metal contact is electrically connected to the Pin point of the power jack and the GND jack.
In a specific implementation, the connecting rod may be fixedly connected with one end of the elastic member, and in particular, the connecting rod may be vertically and fixedly connected with one end of the elastic member.
Here, utilize the elastic component can take place deformation production elasticity under the exogenic action, get rid of the characteristic of the reconversion after the exogenic force again, when the terminal was extracted, when the elastic component received thrust, produce elasticity through deformation, and then promote the connecting rod and remove, after the terminal was extracted, get rid of the thrust to the elastic component, the elastic component just reconversion, and then drive the connecting rod and get back to original position, the connecting rod drives first electron device and is connected with power socket and GND socket disconnection electricity.
In specific implementation, the terminal body is further provided with a buckle, and the buckle is used for transmitting the received external force to the elastic piece.
The other end and the buckle of elastic component are connected, when extracting the terminal, apply external force to the buckle, and the buckle will receive external force transfer for the elastic component, and the elastic component produces elasticity through deformation. Here, the other end of the spring may be vertically and fixedly connected with the catch.
Preferably, the elastic part can be a spring, and specifically can be a compression spring, and the compression spring has the advantages of low cost, convenient material acquisition, easy installation and convenient operation in the implementation process.
In a specific implementation, the first electronic device is electrically connected between the power socket and the GND socket in parallel. Since the first electronic device has a certain resistance value, the current value between the power outlet and the GND outlet can be changed.
In a specific implementation, the current detection module may detect current variation information between the power socket and the GND socket, and after detecting the current variation information, the current detection module sends the current variation information to the control module.
Specifically, the current detection module may detect a current variation value Δ I between the power outlet and the GND outlet, where Δ I is Vm/R-V/RGeneral assemblyWherein V ismIs the voltage between the power socket and the GND socket, R is the internal resistance between the power socket and the GND socketGeneral assemblyThe total resistance value R of the first electronic device connected between the power supply socket and the GND socket in parallelGeneral assemblyThe following can be calculated according to the parallel resistance formula: 1/RGeneral assembly＝1/R+1/R1To obtain R1Is the resistance of the first electronic device.
Preferably, the first electronic device may be a resistor, and here, the resistance value of the resistor may range from 100 Ω to 10K Ω.
In a specific implementation, the power socket is electrically connected with a power supply, the GND socket is electrically connected with a ground end of a wire, and a voltage exists between the power socket and the GND socket, wherein the voltage can be a strong voltage or a weak point voltage. The strong voltage means that the alternating current voltage is more than 24V, and the weak voltage means that the alternating current voltage is within 24V. In normal operation, the voltage V of the terminal power socket and the GND socketmA strong voltage of 310V can be achieved, and therefore electronic devices with large resistance values are required.
And after receiving the current change information sent by the current detection module, the control module sends a power-off signal to the switching power supply, and the switching power supply is powered off.
In a specific implementation, a second electronic device may also be included, which may be connected in series between the power outlet and the GND outlet. When the terminal is pulled out, the second electronic device and the first electronic device can act together to change the current value between the power supply socket and the GND socket, so that the protection effect is achieved.
At this time, the current change value Δ I between the power outlet and the GND outlet detected by the current detection module is Δ I ═ Vm/R-V/R′General assemblyWherein V ismIs the voltage between the power socket and the GND socket, R is the internal resistance value between the power socket and the GND socket, R'General assemblyIs a first electronic devicePiece is connected in parallel to total resistance value R 'after power socket and GND socket'General assemblyCan be determined according to the formula: r'General assembly＝1/(1/R+1/R1)+R2To obtain R1Is the resistance value, R, of the first electronic device2Is the resistance of the second electronic device.
Based on a hot plug protection system that above-mentioned embodiment provided, including the terminal body, the elastic component, first electron device, the current detection module, control module and switching power supply, elastic component and first electron device set up on the terminal body, when the elastic component is used for the terminal to extract, promote first electron device and make it be connected with power socket and electric wire earthing terminal GND socket electricity on the terminal body, first electron device is used for changing the current value between power socket and the GND socket, the current detection module is used for sending the current change information between power socket and the GND socket that detects to control module, control module is used for receiving the current change information after, the control module control switching power supply outage. The embodiment of the application provides a hot plug protection system, when the terminal was extracted, first electron device electric connection to with power socket and electric wire earthing terminal GND socket between, first electron device can change the current value of power socket and electric wire earthing terminal GND socket, the current detection module detects the current change, and then cuts off the power supply through control module control switch power, avoid electrified equipment to receive surge current's impact and damage.
An example is provided below to illustrate a preferred embodiment of the thermal unplug protection system provided herein.
As shown in fig. 2 and 3, a thermal unplugging protection system includes a terminal body 201, a compression spring 208, a resistor 207, a current detection module, a control module and a switching power supply, wherein the compression spring 208 and the resistor 207 are arranged on the terminal body 201;
a compression spring 208 for pushing the resistor 207 to electrically connect with the power socket 203 and the wire grounding end GND socket 202 on the terminal body 201 when the terminal is pulled out;
and a resistor 207 for changing a current value between the power outlet 203 and the GND outlet 202.
And the current detection module is used for sending the detected current change information between the power socket 203 and the GND socket 202 to the control module.
And the control module is used for controlling the power-off of the switching power supply after receiving the current change information.
The terminal body 201 is further provided with a connecting rod 206, the resistor 207 is fixed on the connecting rod 206, two ends of the connecting rod 206 are respectively provided with a metal contact 205, and the resistor 207 is electrically connected with the metal contact 205. The terminal body 201 is further provided with a buckle 209, one end of the compression spring 208 is vertically and fixedly connected with the buckle 209, and the other end of the compression spring 208 is vertically and fixedly connected with the connecting rod 206.
Here, the catch 209 serves to transmit the received external force to the compression spring 208. When the terminal is pulled out, an external force is applied to the catch 209, the catch 209 transmits the received external force to the compression spring 208, and the compression spring 208 generates an elastic force through deformation, thereby pushing the connecting rod 206 to drive the resistor 207 to move. Under the drive of the connecting rod 206, the resistor 207 is electrically connected with the power socket 203 and the GND socket 202 through the metal contact 205.
Here, the connecting rod 206 drives the resistor 207, so that the resistor 207 and the terminal body 201 are prevented from being damaged due to friction caused by direct contact between the resistor 207 and the terminal body 201. And the connecting rod 206 is an insulator, and the resistor 207 is arranged on the connecting rod 206, so that the damage to the surrounding circuit caused by the electric leakage of the resistor 207 and the conduction of the connecting rod 206 can be avoided.
In the embodiment, the power jack 203 and the GND jack 202 have Pin pins 204, and the Pin pins 204 are metal materials for completing electrical transmission. Specifically, the metal contact 205 is electrically connected to the power jack 203 and the Pin point 204 of the GND jack 202.
Here, the characteristic that the compression spring 208 can deform to generate elastic force under the action of external force and recover to the original state after the external force is removed is utilized, when the terminal is pulled out, the compression spring 208 generates elastic force through deformation when being subjected to thrust, and then the connecting rod 206 is pushed to move, and after the terminal is pulled out, the thrust to the compression spring 208 is removed, the compression spring 208 recovers to the original state, and then the connecting rod 206 is driven to return to the original position, and the connecting rod 206 drives the compression spring 208 to be electrically connected with the power socket 203 and the Pin point of the GND socket 202.
Moreover, the compression spring 208 has the characteristics of low cost, convenient material acquisition, easy installation and convenient operation in the implementation process.
In a specific implementation, the resistor 207 is electrically connected between the power socket 203 and the GND socket 202 in parallel. Since the resistor 207 has a certain resistance value, the value of the current between the power outlet 203 and the GND outlet 202 can be changed.
In a specific implementation, the current detection module may detect current variation information between the power socket 203 and the GND socket 202, and after detecting the current variation information, the current detection module sends the current variation information to the control module.
Specifically, the current detection module may detect a current variation value Δ I between the power outlet 203 and the GND outlet 202, where Δ I is Vm/R-V/RGeneral assemblyIn which V ismIs the voltage between power jack 203 and GND jack 202, R is the internal resistance between power jack 203 and GND jack 202, RGeneral assemblyIs the total resistance, R, of resistor 207 connected in parallel between power jack 203 and GND jack 202General assemblyThe following can be calculated according to the parallel resistance formula: 1/RGeneral assembly＝1/R+1/R1To obtain R1Is the resistance of resistor 207.
Here, the resistance value of the resistor 207 may range from 100 Ω to 10K Ω.
In a specific implementation, power socket 203 is electrically connected to a power source, GND socket 202 is electrically connected to a ground terminal of a wire, and a voltage exists between power socket 203 and GND socket 202, where the voltage may be a strong voltage or a weak voltage. The strong voltage means that the alternating current voltage is more than 24V, and the weak voltage means that the alternating current voltage is within 24V. In normal operation, voltage V of terminal power jack 203 and GND jack 202mA strong voltage of 310V can be achieved, and therefore electronic devices with large resistance values are required.
And after receiving the current change information sent by the current detection module, the control module sends a power-off signal to the switching power supply, and the switching power supply is powered off.
The hot-plug protection system provided by the embodiment can complete the protection action before the terminal is completely plugged out, and has the advantages of quick response and strong practicability.
Based on the same technical concept, the embodiment of the present application further provides a hot-plug protection method, which can be specifically referred to in the following embodiments.
As shown in fig. 4, a hot plug protection method provided in an embodiment of the present application is applied to a hot plug protection system, where the system includes a terminal body, an elastic element, a first electronic device, a current detection module, a control module, and a switching power supply, and the elastic element and the first electronic device are disposed on the terminal body, and the method includes:
s401: the elastic piece pushes the first electronic device so that the first electronic device is electrically connected with the power socket on the terminal body and the GND socket of the electric wire grounding end.
S402: and the current detection system sends the detected current change information of the power socket and the GND socket to the control module.
S403: and after receiving the current change information, the control module controls the switching power supply to be powered off.
In step 401, specifically, the elastic element pushes the connecting rod, so that the connecting rod drives the first electronic device to be electrically connected to the power socket on the terminal body and the GND socket of the wire ground.
The connecting rod sets up on the terminal body, and first electron device is fixed on the connecting rod, and when receiving the thrust of elastic component, the connecting rod drives first electron device and makes it be connected with power socket and GND socket electricity.
Here, drive first electron device through the connecting rod, can avoid first electron device and terminal body direct contact to produce the friction, damage first electron device and terminal body. And the connecting rod is an insulator, and the first electronic device is arranged on the connecting rod, so that the situation that the peripheral circuit is damaged due to the fact that the first electronic device leaks electricity and conducts electricity through the connecting rod can be avoided.
The connecting rod can be fixedly connected with one end of the elastic piece, and particularly, the connecting rod can be vertically and fixedly connected with one end of the elastic piece.
Here, utilize the elastic component can take place deformation production elasticity under the exogenic action, get rid of the characteristic of the reconversion after the exogenic force again, when the terminal was extracted, when the elastic component received thrust, produce elasticity through deformation, and then promote the connecting rod and remove, after the terminal was extracted, get rid of the thrust to the elastic component, the elastic component just reconversion, and then drive the connecting rod and get back to original position, the connecting rod drives first electron device and is connected with power socket and GND socket disconnection electricity.
In a specific implementation, the connecting rod electrically connects the first electronic device with the power jack and the GND jack through metal contacts provided at both ends.
The power socket and the GND socket are both provided with Pin needles, and Pin points are metal substances used for completing electric transmission. Specifically, the metal contact is electrically connected to the Pin point of the power jack and the GND jack.
In specific implementation, the elastic piece can be pushed by pushing the buckle arranged on the terminal body, so that the elastic piece pushes the first electronic device.
The other end and the buckle of elastic component are connected, when extracting the terminal, apply external force to the buckle, and the buckle will receive external force transfer for the elastic component, and the elastic component produces elasticity through deformation. Here, the other end of the spring may be vertically and fixedly connected with the catch.
Preferably, the elastic part can be a spring, and specifically can be a compression spring, and the compression spring has the advantages of low cost, convenient material acquisition, easy installation and convenient operation in the implementation process.
In a specific implementation, the first electronic device is electrically connected between the power socket and the GND socket in parallel. Since the first electronic device has a certain resistance value, the current value between the power outlet and the GND outlet can be changed.
In step 402, the current detection module may detect current variation information between the power socket and the GND socket, and after detecting the current variation information, the current detection module sends the current variation information to the control module.
Specifically, the current detection module may detect a current variation value Δ I between the power outlet and the GND outlet, where Δ I is Vm/R-V/RGeneral assemblyWherein V ismIs the voltage between the power socket and GND socket, R is the power socket andinternal resistance between GND sockets, RGeneral assemblyThe total resistance value R of the first electronic device connected between the power supply socket and the GND socket in parallelGeneral assemblyThe following can be calculated according to the parallel resistance formula: 1/RGeneral assembly＝1/R+1/R1To obtain R1Is the resistance of the first electronic device.
Preferably, the first electronic device may be a resistor, and here, the resistance value of the first electronic device may range from 100 Ω to 10K Ω.
In a specific implementation, the power socket is electrically connected with a power supply, the GND socket is electrically connected with a ground end of a wire, and a voltage exists between the power socket and the GND socket, wherein the voltage can be a strong voltage or a weak point voltage. The strong voltage means that the alternating current voltage is more than 24V, and the weak voltage means that the alternating current voltage is within 24V. In normal operation, the voltage V of the terminal power socket and the GND socketmA strong voltage of 310V can be achieved, and therefore electronic devices with large resistance values are required.
In a specific implementation, the current value between the first electronic device and the power socket and the wire ground terminal GND socket on the terminal body can be changed by connecting a second electronic device in series between the first electronic device and the power socket and the wire ground terminal GND socket on the terminal body.
At this time, the current change value Δ I between the power outlet and the GND outlet detected by the current detection module is Δ I ═ Vm/R-V/R′General assemblyWherein V ismIs the voltage between the power socket and the GND socket, R is the internal resistance value between the power socket and the GND socket, R'General assemblyIs the total resistance value, R ', of the first electronic device connected between the power supply socket and the GND socket in parallel'General assemblyCan be determined according to the formula: r'General assembly＝1/(1/R+1/R1)+R2To obtain R1Is the resistance value, R, of the first electronic device2Is the resistance of the second electronic device.
In step 403, after receiving the current change information sent by the current detection module, the control module sends a power-off signal to the switching power supply, so that the switching power supply is powered off.
The thermal extraction protection method provided based on the above embodiment is applied to a thermal extraction protection system, the system includes a terminal body, an elastic member, a first electronic device, a current detection module, a control module and a switching power supply, the elastic member and the first electronic device are arranged on the terminal body, and the method includes: the elastic piece pushes the first electronic device to enable the first electronic device to be electrically connected with a power socket on the terminal body and a GND socket of the electric wire grounding end, the current detection system sends the detected current change information of the power socket and the GND socket to the control module, and the control module controls the switch power supply to be powered off after receiving the current change information. According to the hot plug protection method provided by the embodiment of the application, when the terminal is pulled out, the first electronic device is electrically connected between the power socket and the wire grounding end GND socket, the current values of the power socket and the wire grounding end GND socket can be changed by the first electronic device, the current detection module detects current changes, power-off protection is further performed, and the charged equipment is prevented from being damaged due to the impact of surge current.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of one logic function, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A hot-plug protection system is characterized by comprising a terminal body, an elastic piece, a first electronic device, a current detection module, a control module and a switching power supply, wherein the elastic piece and the first electronic device are arranged on the terminal body;
the elastic piece is used for pushing the first electronic device to be electrically connected with a power supply socket on the terminal body and a wire grounding end GND socket when the terminal is pulled out;
the first electronic device is used for changing the current value between the power supply socket and the GND socket.
And the current detection module is used for sending the detected current change information between the power socket and the GND socket to the control module.
And the control module is used for controlling the power-off of the switching power supply after receiving the current change information.
2. The system of claim 1, further comprising a link, the first electronics disposed on the link;
the connecting rod is used for driving the first electronic device to be electrically connected between the power socket and the GND socket when the connecting rod is pushed by the elastic piece.
3. The system of claim 2, comprising: metal contacts are respectively arranged at the two ends of the connecting rod,
the metal contact is used for electrically connecting the first electronic device with the power socket and the GND socket.
4. The system of claim 1, further comprising: a buckle arranged on the terminal body,
the buckle is used for transmitting the received external force to the elastic piece.
5. The system of claim 1, further comprising a second electronic device connected in series between the power outlet and the GND outlet.
6. A hot-plug protection method is applied to a hot-plug protection system, the system comprises a terminal body, an elastic piece, a first electronic device, a current detection module, a control module and a switch power supply, the elastic piece and the first electronic device are arranged on the terminal body, and the hot-plug protection method is characterized in that,
the method comprises the following steps:
the elastic piece pushes the first electronic device so that the first electronic device is electrically connected with a power supply socket on the terminal body and a wire grounding end (GND) socket;
the current detection system sends the detected current change information of the power supply socket and the GND socket to the control module;
and after receiving the current change information, the control module controls the switching power supply to be powered off.
7. The method of claim 6, wherein the elastic member pushes the first electronic device to electrically connect the first electronic device with a power outlet and a wire Ground (GND) outlet on the terminal body, comprising:
the elastic piece drives the first electronic device to be electrically connected with the power socket on the terminal body and the GND socket of the electric wire grounding end through pushing the connecting rod.
8. The method of claim 7, wherein the connecting rod brings the first electronic device into electrical connection with a power socket and a wire Ground (GND) socket on the terminal body, comprising:
the connecting rod electrically connects the first electronic device with the power socket and the GND socket through metal contacts arranged at two ends.
9. The method of claim 7, further comprising: the elastic piece is pushed by pushing the buckle arranged on the terminal body, so that the elastic piece pushes the first electronic device.
10. The method of claim 7, further comprising: the current value between the first electronic device and the power supply socket and the wire grounding end GND socket on the terminal body is changed by connecting the second electronic device in series between the first electronic device and the power supply socket and the wire grounding end GND socket on the terminal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811152028.1A CN110970865B (en) | 2018-09-29 | 2018-09-29 | Hot-plug protection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811152028.1A CN110970865B (en) | 2018-09-29 | 2018-09-29 | Hot-plug protection system and method |
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| CN110970865A true CN110970865A (en) | 2020-04-07 |
| CN110970865B CN110970865B (en) | 2022-09-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102843449A (en) * | 2012-08-16 | 2012-12-26 | 惠州Tcl移动通信有限公司 | Mobile communication device and detecting method of subscriber identity module (SIM) card hotplug |
| US20140085782A1 (en) * | 2012-09-26 | 2014-03-27 | Delta Electronics, Inc. | Power electronic device, power electronic system and hot plug method for power unit |
| CN104427679A (en) * | 2013-08-21 | 2015-03-18 | 欧司朗有限公司 | Hot swap module and driver for lighting device, and lighting device |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102843449A (en) * | 2012-08-16 | 2012-12-26 | 惠州Tcl移动通信有限公司 | Mobile communication device and detecting method of subscriber identity module (SIM) card hotplug |
| US20140085782A1 (en) * | 2012-09-26 | 2014-03-27 | Delta Electronics, Inc. | Power electronic device, power electronic system and hot plug method for power unit |
| CN104427679A (en) * | 2013-08-21 | 2015-03-18 | 欧司朗有限公司 | Hot swap module and driver for lighting device, and lighting device |
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| CN110970865B (en) | 2022-09-23 |
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