CN114389247A - Hot plug protection device, method, equipment and medium - Google Patents
Hot plug protection device, method, equipment and medium Download PDFInfo
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- CN114389247A CN114389247A CN202210049130.9A CN202210049130A CN114389247A CN 114389247 A CN114389247 A CN 114389247A CN 202210049130 A CN202210049130 A CN 202210049130A CN 114389247 A CN114389247 A CN 114389247A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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Abstract
The application discloses a hot plug protection device, method, equipment and medium, and relates to the technical field of hot plug. The device includes: MCU, hot plug detection circuit, ageing drawer. The first end of the hot plug detection circuit is connected with the first end of the aging drawer, the first end of the MCU is connected with the second end of the hot plug detection circuit, the second end of the MCU is connected with the second end of the aging drawer, and the third end of the aging drawer is grounded. Because the hot plug circuit is arranged, the manual aging process is changed into the circuit for detection, the automation degree is high, the rapid detection effect is realized, the error risk caused by manual operation is reduced, the manpower and time cost in the aging process are reduced, meanwhile, the aging process of the aging drawer is controlled by the MCU through the hot plug detection signal to be carried out and suspended, the instant overlarge current cannot be generated when the aging drawer moves in an inserting mode or is pulled out, and the hot plug protection is realized.
Description
Technical Field
The present application relates to the field of hot plug technologies, and in particular, to a hot plug protection device, method, device, and medium.
Background
In recent years, more and more devices can capture easily moving objects, most of the devices use lasers, however, after the lasers are used for a long time, the lasers are aged, and the existing laser aging method is to put aged laser chips into an aging drawer and then put the aging drawer into an aging oven. In the aging process, a constant aging current is applied to the driving power supply board, and when the aging drawer in an aging power-on state is pulled out of or reinserted into the aging oven, instantaneous overshoot current which is much larger than the normal aging current is generated at two ends of the laser chip repeatedly due to the current on-off action caused by the hot plug action, so that the problem of over Electrical Stress (EOS) is generated. Meanwhile, the existing aging process needs manual operation of technicians, and the risk of manual misoperation is increased.
In view of the above-mentioned problems, the problem of how to avoid generating excessive electrical stress is a problem that those skilled in the art strive to solve.
Disclosure of Invention
The present application provides a hot plug protection device, method, apparatus and medium for avoiding generating excessive electrical stress.
In order to solve the above technical problem, the present application provides a hot plug protection device, including: MCU, hot plug detection circuit, ageing drawer.
The first end of hot plug detection circuitry is connected with the first end of ageing drawer for detect the action of inserting and the action of extracting of ageing drawer, simultaneously generate and insert the action and extract the corresponding hot plug detected signal of action, MCU's first end is connected with hot plug detection circuitry's second end, a operating condition for receiving hot plug detected signal and control hot plug detection circuitry, MCU's second end is connected with the second end of ageing drawer, an ageing process for controlling ageing drawer goes on and pauses, the third end ground of ageing drawer.
Preferably, the hot plug detection circuit comprises: a pull-up resistor;
the first end of the pull-up resistor is connected with the first end of the aging drawer, and the second end of the pull-up resistor is connected with the power supply.
Preferably, the hot plug detection circuit further comprises: a pull-down resistor;
the first end of the pull-down resistor is connected with the first end of the MCU, and the second end of the pull-down resistor is grounded.
Preferably, the method further comprises the following steps: a single pole double throw switch;
the fixed end of the single-pole double-throw switch is connected with the second end of the MCU, the first movable end of the single-pole double-throw switch is connected with the second end of the aging drawer, and the second movable end of the single-pole double-throw switch is grounded; the number of the single-pole double-throw switches is the same as that of the grooves for placing the laser chips in the aging drawer.
Preferably, the MCU is a four quadrant drive power board.
In order to solve the above technical problem, the present application further provides a hot plug protection method, applied to the above hot plug protection device, the method including:
acquiring a hot plug detection signal generated by a hot plug detection circuit;
judging the action of the aging drawer according to the hot plug detection signal;
if the aging drawer is inserted, the single-pole double-throw switch is switched to the first movable end;
if the aging drawer is pulled out, the single-pole double-throw switch is switched to the second movable end.
Preferably, the acquiring the hot plug detection signal generated by the hot plug detection circuit comprises:
recording the times that the hot plug detection signal is at a high level or the hot plug detection signal is at a low level;
judging the size relationship between the times and the preset times;
if the times are more than the preset times, acquiring a hot plug detection signal;
and if the frequency is less than the preset frequency, returning to the step of recording the frequency that the hot plug detection signal is at a high level or the hot plug detection signal is at a low level.
In order to solve the above technical problem, the present application further provides a hot plug detection device, including:
the acquisition module is used for acquiring a hot plug detection signal generated by the hot plug detection circuit;
the judging module is used for judging the action of the aging drawer according to the hot plug detection signal;
the first switching module is used for switching the single-pole double-throw switch to the first movable end if the action of the aging drawer is an inserting action;
and the second switching module is used for switching the single-pole double-throw switch to the second movable end if the aging drawer acts as a pulling-out action.
In order to solve the above technical problem, the present application further provides a hot plug detection device, including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the hot plug protection method when executing the computer program.
In order to solve the above technical problem, the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above all hot plug protection methods are implemented.
The application provides a hot plug protection device includes: MCU, hot plug detection circuit, ageing drawer. The first end of hot plug detection circuitry is connected with the first end of ageing drawer for detect the action of inserting and the action of extracting of ageing drawer, simultaneously generate and insert the action and extract the corresponding hot plug detected signal of action, MCU's first end is connected with hot plug detection circuitry's second end, a operating condition for receiving hot plug detected signal and control hot plug detection circuitry, MCU's second end is connected with the second end of ageing drawer, an ageing process for controlling ageing drawer goes on and pauses, the third end ground of ageing drawer. Because the hot plug circuit is arranged, the manual aging process is changed into the circuit for detection, the automation degree is high, the rapid detection effect is realized, the error risk caused by manual operation is reduced, the manpower and time cost in the aging process are reduced, meanwhile, the aging process of the aging drawer is controlled by the MCU through the hot plug detection signal to be carried out and suspended, the instant overlarge current cannot be generated when the aging drawer moves in an inserting mode or is pulled out, and the hot plug protection is realized.
The application also provides a hot plug protection method, hot plug protection equipment and a computer readable storage medium, and the effects are the same as above.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a structural diagram of a hot plug protection device according to an embodiment of the present disclosure;
FIG. 2 is a circuit diagram of a hot plug detection circuit according to an embodiment of the present disclosure;
fig. 3 is a structural diagram of another hot plug protection device according to an embodiment of the present application;
fig. 4 is a flowchart of a hot plug protection method according to an embodiment of the present application;
fig. 5 is a structural diagram of a hot plug detection device according to an embodiment of the present application;
fig. 6 is a block diagram of another hot plug detection device according to an embodiment of the present application.
Wherein 101 is a hot plug detection circuit, 102 is an aging drawer, 103 is an MCU, and 301 is a single-pole double-throw switch.
Detailed Description
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. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide a hot plug protection device, method, equipment and medium for avoiding generating excessive electrical stress.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
It should be noted that, during the aging process, a certain aging current is constantly applied to the laser chip through the driving power board. If the aging drawer is directly pulled out of the aging furnace or inserted again in the aging process, instantaneous overshoot current which is much larger than normal aging current is generated at two ends of the laser chip due to instantaneous on-off of the current source and on-off caused by pulling out and inserting actions of the aging drawer repeatedly, and excessive electrical stress is generated. The hot plug protection device is used for preventing excessive current from generating so as to generate excessive electrical stress at the moment of pulling out and inserting the aging drawer in the aging process of the laser chip.
Fig. 1 is a structural diagram of a hot plug protection device according to an embodiment of the present application. As shown in fig. 1, the apparatus includes: MCU101, hot plug detection circuit 102, ageing drawer 103.
The first end of the hot plug detection circuit 102 is connected with the first end of the aging drawer 103, and is used for detecting the insertion action and the extraction action of the aging drawer 103, and simultaneously generating a hot plug detection signal corresponding to the insertion action and the extraction action, the first end of the MCU101 is connected with the second end of the hot plug detection circuit 102, and is used for receiving the hot plug detection signal and controlling the working state of the hot plug detection circuit 102, the second end of the MCU101 is connected with the second end of the aging drawer 103, and is used for controlling the aging process of the aging drawer 103 to be carried out and suspended, and the third end of the aging drawer 103 is grounded.
In the process of aging the laser chip, the laser chip needs to be placed in an aging drawer, and then the aging drawer is inserted into an aging furnace to perform aging treatment on the laser chip. The aging drawer is required to be provided with a plurality of grooves, and one groove is used for placing one laser chip. Therefore, the aging drawer can be used for placing a plurality of laser chips and simultaneously carrying out aging treatment on the plurality of laser chips. When the first end of the aging drawer is connected with the first end of the hot plug detection circuit, the first end of the aging drawer is connected through a conductive contact point of the first end; when the second end of the aging drawer is connected with the second end of the MCU, the second end of the aging drawer is connected through a conductive contact point of the second end of the aging drawer; when the third end of the aging drawer is grounded, the third end of the aging drawer is correspondingly connected through a conductive contact point of the third end. It should be noted that, in this embodiment, the size, volume and number of the conductive contacts of the aging drawer are not limited, and only the size and volume of the aging drawer are required to be able to contain a plurality of laser chips, and meanwhile, the number of the conductive contacts is required to be able to have a corresponding conductive contact at each connection point when performing circuit connection. The number of the laser chips is not limited, and can be set according to specific implementation scenes, and the number of the corresponding grooves for fixing the laser chips is not limited.
Because the hot plug circuit is arranged, the manual aging process is changed into the circuit for detection, the automation degree is high, the rapid detection effect is realized, the error risk caused by manual operation is reduced, the manpower and time cost in the aging process are reduced, meanwhile, the aging process of the aging drawer is controlled by the MCU through the hot plug detection signal to be carried out and suspended, the instant overlarge current cannot be generated when the aging drawer moves in an inserting mode or is pulled out, and the hot plug protection is realized.
In order to realize the detection and the processing of the plugging and unplugging actions of the aging drawer in the aging process, the aging drawer is connected with a hot plug detection circuit, so that the actions of the aging drawer during plugging and unplugging are converted into electric signals, and the hot plug detection circuit receives the corresponding signals. Meanwhile, a signal is transmitted to the MCU, the signal is detected through the MCU, when the aging drawer is detected to be pulled out and inserted, the current is controlled to be generated within a time with a very short time interval, and the generated current is not instantaneous overlarge current, so that hot plug protection is realized.
Fig. 2 is a circuit diagram of a hot plug detection circuit according to an embodiment of the present application. On the basis of the above embodiment, as a more preferred embodiment, as shown in fig. 2, the hot plug detection circuit 102 includes: pull-up resistor R1;
a first terminal of pull-up resistor R1 is connected to a first terminal of burn-in drawer 103, and a second terminal of pull-up resistor R1 is connected to a power supply. The aging drawer generates a high level signal as a hot plug detection signal through a pull-up resistor. When the aging drawer is inserted into the aging oven, the hot plug detection signal is pulled up to a high level signal through the pull-up resistor, and the high level signal is used as a mark signal when the aging drawer is inserted.
On the basis of the above embodiment, as a more preferred embodiment, the hot plug detection circuit 102 further includes: a pull-down resistor R2;
the first end of the pull-down resistor R2 is connected with the first end of the MCU101, and the second end of the pull-down resistor R2 is grounded. The MCU defaults to a weak pull-down low level signal generated by a pull-down resistor as a hot plug detection signal. When the aging drawer is pulled out of the aging furnace, the hot plug detection signal flows through the pull-down resistor and is pulled down to a low level signal, and the low level signal is used as a marking signal when the aging drawer is pulled out. And when the mark signal that the aging drawer is pulled out is detected, the aging current of the MCU to the laser chip is cut off within 1us, so that the driving power supply is isolated from the laser chip, and the positive end and the negative end of the laser chip are in short circuit, thereby more effectively protecting the laser chip from potential risks of electrostatic discharge. When the MCU knows the pull-out signal of the aging drawer, the aging process of the aging drawer is suspended and the aging drawer enters a waiting state.
When the aging drawer is inserted again, because the driving power supply is isolated from the laser chip at the moment, the transient overshoot current can not be generated any more during the insertion. And after the MCU on the driving power panel detects the sign signal inserted into the aging drawer, the suspended aging process is controlled to continue, and the driving power is controlled to be connected with the laser chip to be electrified again.
Fig. 3 is a structural diagram of another hot plug protection device according to an embodiment of the present application. On the basis of the above embodiment, as a more preferred embodiment, as shown in fig. 3, the method further includes: a single pole double throw switch 301.
The fixed end of the single-pole double-throw switch 301 is connected with the second end of the MCU101, the first movable end of the single-pole double-throw switch 301 is connected with the second end of the aging drawer 103, and the second movable end of the single-pole double-throw switch 301 is grounded; the number of the single-pole double-throw switches 301 is the same as that of the grooves for placing the laser chips in the aging drawer 103. The first end of the pull-down resistor R2 is connected with the first end of the MCU101, and the second end of the pull-down resistor R2 is grounded.
The MCU defaults to a weak pull-down low level signal generated by a pull-down resistor as a hot plug detection signal. When the aging drawer is pulled out of the aging furnace, the hot plug detection signal flows through the pull-down resistor and is pulled down to a low level signal, and the low level signal is used as a marking signal when the aging drawer is pulled out. When the sign signal that the aging drawer is pulled out is detected, the single-pole double-throw switch is switched to the second stationary end within 1us, namely, the aging current of the laser chip from the MCU is cut off, the driving power supply is isolated from the laser chip, and the positive end and the negative end of the laser chip are in short circuit, so that the laser chip is effectively protected from potential risks of electrostatic discharge. When the MCU knows the pull-out signal of the aging drawer, the aging process of the aging drawer is suspended and the aging drawer enters a waiting state.
When the aging drawer is inserted again, because the driving power supply is isolated from the laser chip at the moment, the transient overshoot current can not be generated any more during the insertion. And after the MCU on the driving power panel detects the sign signal inserted into the aging drawer, the single-pole double-throw switch is switched to the first fixed end to control the suspended aging process to continue, and the driving power is controlled to be connected with the laser chip to be powered up again.
On the basis of the above embodiment, as a more preferred embodiment, the MCU101 is a four-quadrant driving power board. The four quadrants are the four quadrants of a coordinate system. The X-axis is defined as voltage, the Y-axis is defined as current, and an area enclosed by the X-axis positive coordinate and the Y-axis positive coordinate is a first quadrant and sequentially comprises two, three and four quadrants in a counterclockwise sequence.
The voltage can be stabilized in all the four quadrants: wherein, the first quadrant positive voltage stabilizes voltage, and the current flows to the load. The current and voltage directions are the same; the negative voltage of the second quadrant is stabilized, but the current flows from the load to the power supply, and the directions of the current and the voltage are opposite; the negative voltage of the third quadrant is stabilized, the current flows to the load, and the direction of the current is the same as that of the voltage; the positive voltage in the fourth quadrant stabilizes, but current flows from the load to the power supply, and the current and voltage are opposite in direction. The four-quadrant driving power panel can be simply understood as supplying power by using a positive power supply and a negative power supply, outputting voltage which can be positive or negative, and outputting current which can be output or flowing backwards.
And on the four-quadrant driving power supply board, the general input and output pin is configured as an input signal, and the hot PLUG detection signal is pulled down to the ground through a pull-down resistor R2 with the resistance value of 100K omega to serve as a hot PLUG detection signal DRAWER _ PLUG _ IN. And the hot PLUG detection signal is pulled up to the +3.3V high level of the aging DRAWER through a pull-up resistor R1 with the resistance value of 10K omega on the aging DRAWER to be used as a hot PLUG detection signal DRAWER _ PLUG _ IN.
Fig. 4 is a flowchart of a hot plug protection method according to an embodiment of the present application. On the basis of the foregoing embodiment, this embodiment further provides a hot plug protection method, which is applied to the hot plug protection device, and as shown in fig. 4, the method includes:
s40: and acquiring a hot plug detection signal generated by the hot plug detection circuit.
Because the hot plug detection signal generated by the hot plug detection circuit is a high level signal and a low level signal, the MCU can directly receive the signal, and the hot plug detection signal can be acquired without conversion between any data forms. At this time, it should be noted that, in order to obtain the accuracy of the hot plug detection signal, the hot plug detection signal may be converted by a digital-to-analog converter or other devices capable of converting a signal into a digital signal, where whether to convert the hot plug detection signal by using other devices is not required, and an implementation manner thereof may be determined according to a specific implementation.
S41: and judging the action of the aging drawer according to the hot plug detection signal.
The aging drawer is generally divided into two types of actions, namely, an insertion action and a removal action. Judging the action of the aging drawer according to the hot plug detection signal, namely, if the received hot plug detection signal is a low level signal, the action of the aging drawer is a pulling-out action; if the received hot plug detection signal is a high level signal, the aging drawer acts as a plug-in action.
S42: if the aging drawer is inserted, the single-pole double-throw switch is switched to the first moving end.
When the aging drawer is judged to be in operation in step S41, a high level signal is output from the MCU through the MCU, and the single-pole double-throw switch is connected to the first moving terminal, at which time a subsequent aging process is performed.
S43: if the aging drawer is pulled out, the single-pole double-throw switch is switched to the second movable end.
When the aging drawer is judged to be operated in the step S41, a low level signal of the MCU is outputted from the MCU, and the single-pole double-throw switch is connected to the second moving terminal, so that the subsequent aging process is suspended.
On the basis of the above embodiment, as a more preferred embodiment, the acquiring the hot plug detection signal generated by the hot plug detection circuit includes:
s44: and recording the times that the hot plug detection signal is in a high level or the hot plug detection signal is in a low level.
In order to more accurately know whether the hot plug detection signal is at a high level or a low level, the level value of the hot plug detection signal at the moment is recorded for multiple times before the MCU acquires the hot plug detection signal, and the recorded content can be the words of a high level signal and a low level signal; the words "1" and "0" are also possible; the words "insertion operation" and "removal operation" may be used, and are not limited herein.
S45: judging the size relationship between the times and the preset times;
if the number of times is greater than the preset number of times, the process proceeds to step S40.
When the number of occurrences of the content is greater than the preset number, it indicates that the hot plug detection signal is an accurate and stable value, and step S40 may be performed according to the hot plug detection signal.
If the number of times is less than the preset number of times, the process returns to step S44.
Inquiring the above mentioned content, when the number of times of occurrence of the above content is less than the preset number of times, it indicates that the hot plug detection signal at this time is not an accurate and stable value, step S40 may not be performed according to the hot plug detection signal, and at this time, the process returns to step S44.
In the above embodiments, the hot plug protection method is described in detail, and the present application also provides an embodiment corresponding to the hot plug detection device. Fig. 5 is a structural diagram of a hot plug detection device according to an embodiment of the present application. As shown in fig. 5, the present application further provides a hot plug detection device, including:
the obtaining module 50 is configured to obtain a hot plug detection signal generated by the hot plug detection circuit;
the judging module 51 is used for judging the action of the aging drawer according to the hot plug detection signal;
a first switching module 52, configured to switch the single-pole double-throw switch to the first moving end if the aging drawer is in the insertion operation;
and a second switching module 53, configured to switch the single-pole double-throw switch to the second moving end if the aging drawer is pulled out.
Since the embodiments of the apparatus portion and the method portion correspond to each other, please refer to the description of the embodiments of the method portion for the embodiments of the apparatus portion, which is not repeated here.
Fig. 6 is a structural diagram of another hot plug detection device according to an embodiment of the present application, and as shown in fig. 6, the device includes:
a memory 60 for storing a computer program;
the processor 61 is configured to implement the steps of the hot plug protection method mentioned in the above embodiments when executing the computer program.
The hot plug detection device provided by this embodiment may include, but is not limited to, a smart phone, a tablet computer, a notebook computer, or a desktop computer.
The processor 61 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 61 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 61 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 61 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 61 may further include an AI (Artificial Intelligence) processor for processing computing operations related to machine learning.
In some embodiments, the hot plug detection device may further include a display screen, an input/output interface, a communication interface, a power source, and a communication bus.
Those skilled in the art will appreciate that the configuration shown in FIG. 6 does not constitute a limitation of a hot plug detect device and may include more or fewer components than those shown.
The hot plug detection device provided by the embodiment of the application comprises a memory 60 and a processor 61, and the processor 61 can realize a hot plug protection method when executing a program stored in the memory.
Finally, the application also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps as set forth in the above-mentioned method embodiments.
It is to be understood that if the method in the above embodiments is implemented in the form of software functional units and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium and executes all or part of the steps of the methods described in the embodiments of the present application, or all or part of the technical solutions. 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.
The hot plug protection device, method, device and medium provided by the present application are described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A hot plug protection device, comprising: the device comprises an MCU (101), a hot plug detection circuit (102) and an aging drawer (103);
the first end of the hot plug detection circuit (102) is connected with the first end of the aging drawer (103) and used for detecting the inserting action and the pulling action of the aging drawer (103) and simultaneously generating hot plug detection signals corresponding to the inserting action and the pulling action, the first end of the MCU (101) is connected with the second end of the hot plug detection circuit (102) and used for receiving the hot plug detection signals and controlling the working state of the hot plug detection circuit (102), the second end of the MCU (101) is connected with the second end of the aging drawer (103) and used for controlling the aging process of the aging drawer (103) to be performed and suspended, and the third end of the aging drawer (103) is grounded.
2. A hot plug protection device according to claim 1, wherein the hot plug detection circuit (102) comprises: a pull-up resistor;
the first end of the pull-up resistor is connected with the first end of the aging drawer (103), and the second end of the pull-up resistor is connected with a power supply.
3. A hot plug protection device according to claim 1, wherein the hot plug detection circuit (102) further comprises: a pull-down resistor;
the first end of the pull-down resistor is connected with the first end of the MCU (101), and the second end of the pull-down resistor is grounded.
4. A hot plug protection device according to claim 1, further comprising: a single pole double throw switch (301);
the fixed end of the single-pole double-throw switch (301) is connected with the second end of the MCU (101), the first movable end of the single-pole double-throw switch (301) is connected with the second end of the aging drawer (103), and the second movable end of the single-pole double-throw switch (301) is grounded; the number of the single-pole double-throw switches (301) is the same as that of grooves for placing laser chips in the aging drawer (103).
5. A hot plug protection device according to claim 1, wherein the MCU (101) is a four quadrant drive power board.
6. A hot plug protection method applied to the hot plug protection device of any one of claims 1 to 5, the method comprising:
acquiring a hot plug detection signal generated by a hot plug detection circuit;
judging the action of the aging drawer according to the hot plug detection signal;
if the aging drawer acts as an inserting action, the single-pole double-throw switch is switched to a first moving end;
and if the aging drawer acts as a pulling-out action, the single-pole double-throw switch is switched to a second moving end.
7. The method according to claim 6, wherein the obtaining the hot plug detection signal generated by the hot plug detection circuit comprises:
recording the times that the hot plug detection signal is at a high level or the hot plug detection signal is at a low level;
judging the size relationship between the times and preset times;
if the times are larger than the preset times, acquiring the hot plug detection signal;
and if the frequency is less than the preset frequency, returning to the step of recording the frequency that the hot plug detection signal is at a high level or the hot plug detection signal is at a low level.
8. A hot plug detection device, comprising:
the acquisition module is used for acquiring a hot plug detection signal generated by the hot plug detection circuit;
the judging module is used for judging the action of the aging drawer according to the hot plug detection signal;
the first switching module is used for switching the single-pole double-throw switch to a first movable end if the aging drawer acts as an inserting action;
and the second switching module is used for switching the single-pole double-throw switch to a second movable end if the aging drawer acts as a pulling-out action.
9. A hot plug detection device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the hot plug protection method according to claim 6 or 7 when executing the computer program.
10. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, carries out the steps of the hot plug protection method according to claim 6 or 7.
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| CN202210049130.9A CN114389247A (en) | 2022-01-17 | 2022-01-17 | Hot plug protection device, method, equipment and medium |
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| CN202210049130.9A CN114389247A (en) | 2022-01-17 | 2022-01-17 | Hot plug protection device, method, equipment and medium |
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