CN109888734A - A kind of automobile power back door Overtemperature protection device of motor - Google Patents
A kind of automobile power back door Overtemperature protection device of motor Download PDFInfo
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- CN109888734A CN109888734A CN201910173378.4A CN201910173378A CN109888734A CN 109888734 A CN109888734 A CN 109888734A CN 201910173378 A CN201910173378 A CN 201910173378A CN 109888734 A CN109888734 A CN 109888734A
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- back door
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Abstract
The present invention discloses a kind of automobile power back door Overtemperature protection device of motor, the temperature monitoring module being connect including main control module and respectively with main control module, drive module, temperature monitoring module, drive module is connect with motor in automobile tail gate control system respectively, temperature monitoring module monitors the temperature signal in motor operation course, and it is sent to main control module, main control module judges corresponding state of temperature according to the temperature signal received, when being judged as overheat temperature state, control drive module driving motor shuts down, and when being judged as recovery normal temperature condition, it controls drive module driving motor and restores operating.The present invention has many advantages, such as that simple structure, at low cost, fast response time and intelligence degree are high, safe and reliable.
Description
Technical field
The present invention relates to automobile technical field more particularly to a kind of automobile power back door Overtemperature protection device of motor.
Background technique
It is using automobile power back door in new-energy automobile at present, is that car tail is controlled by automatically controlled or remote control mode
Door is automatically opened or closed, and greatly improves the convenience that automobile uses.It is automatically controlled or distant in automobile power back door use process
Control sends automobile tail gate and opens or closes instruction, receives instruction rear pole motor and runs at high speed to drive strut movement to realize vapour
Tailstock door is automatically opened, is closed, but motor runs at high speed and easily causes motor overheating failure in fact, and motor overheating failure can make
Obtaining strut can not work, and influence the normal use of automobile power back door.
It is protected for automobile power back door motor overheating, is at present usually to be realized by simply arrangement temperature controller, i.e., it is logical
The temperature of temperature controller monitoring strut motor is crossed, and single temperature controller protective value is bad, once temperature controller failure can also make
Strut can not work, and cannot ensure the reliability of automobile power back door.Traditional motor overheating protection circuit or realization
It is complicated, volume weight is big, at high cost, be not suitable in the limited automobile power back door motor of arrangement space or response speed
Slowly, once occur motor overheating can not quick response and release failure immediately, and usually is all after releasing failure again manually it is extensive
The work of compound machine needs to rely on manual operation, and intelligence degree is not high, still will affect the normal use of electric tail gate.Cause
This makes it possible to intelligence, quick response overheating fault, mentions it is urgent to provide the protective device for being directed to automobile power back door motor overheating
The reliable and stable and convenience of high automobile power back door work.
Summary of the invention
The technical problem to be solved in the present invention is that, for technical problem of the existing technology, the present invention provides one
The automobile power back door motor overheating protection that kind structure is simple, at low cost, fast response time and intelligence degree are high, safe and reliable
Device.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of automobile power back door Overtemperature protection device of motor, including main control module and respectively with the main control module connect
The temperature monitoring module that connects, drive module, the temperature monitoring module, drive module respectively with it is electric in automobile tail gate control system
Machine connection, the temperature monitoring module monitors the temperature signal in the motor operation course, and is sent to the main control module,
The main control module judges corresponding state of temperature according to the temperature signal received, when being judged as overheat temperature state
When, it controls the drive module and the motor is driven to shut down, and when being judged as recovery normal temperature condition, control institute
Stating drive module drives the motor to restore operating.
As a further improvement of the present invention: the temperature monitoring module is the temperature collection circuit based on thermistor.
As a further improvement of the present invention: the temperature collection circuit includes that sequentially connected thermistor, signal connect
Enter circuit and signal conditioning circuit, the thermistor monitors the temperature signal in the motor operation course, the signal
Access circuit accesses the temperature signal that the thermistor monitors, exports after the signal conditioning circuit carries out signal condition
To the main control module.
As a further improvement of the present invention: the drive module is switching circuit, the switching circuit and the motor
Power supply connection, the driving signal that the switching circuit is sent according to the main control module controls on-off, described in controlling
The on-off of the power supply of motor.
As a further improvement of the present invention: the switching circuit includes first switch tube Q1 and second switch Q2,
The grid of the first switch tube Q1 accesses the driving signal that the main control module is sent, and drain electrode is connected to described by a resistance
The drain electrode of the grid of second switch Q2, the second switch Q2 is connected by the power supply of diode D1 and the motor
It connects, when the driving signal is low level, the first switch tube Q1, second switch Q2 are disconnected to control the cutting electricity
The power supply of machine, when the driving signal is high level, the first switch tube Q1, second switch Q2 are connected to control
Access the power supply of the motor.
As a further improvement of the present invention: the main control module includes sequentially connected access unit, multilevel iudge list
Member and drive signal generation unit, the access unit access the temperature signal that the temperature monitoring module monitors, export
To the comparison judgment unit, the temperature signal received is compared by the comparison judgment unit with default overheat threshold value,
Then it is judged as overheat temperature state if more than the default overheat threshold value, controls the drive signal generation unit and generate the first drive
Dynamic signal, to drive the motor to shut down, if the temperature signal received after a specified period of time is less than the default overheat
Threshold value is then judged as that recovery to normal temperature condition, controls the drive signal generation unit and generates the second driving signal, to drive
It moves the motor and restores operating.
As a further improvement of the present invention: being less than institute when the comparison judgment unit determines the temperature signal received
When stating overheat preset threshold, being greater than default overtemperature preset threshold, the drive signal generation unit send third driving signal with
The motor reduction is driven to run.
As a further improvement of the present invention: the output end of the temperature monitoring module is additionally provided with triggering and keeps module,
Triggering holding is carried out for the output signal to the temperature monitoring module.
As a further improvement of the present invention: one end of the reseting module keeps module to connect with the triggering, another
End is connect with the reset terminal of the main control module, resets control for executing.
As a further improvement of the present invention: the temperature monitoring module is connected by starting control module and the motor
It connects, the starting control module real-time monitoring automobile tail gate is opened, the telecommand of closing and automobile tail gate completion play open and close
The state closed controls the temperature monitoring module and connect with the motor when monitoring to receive the telecommand, and
When monitoring that automobile tail gate completes opening, closing motion, controls the temperature monitoring module and disconnected with the motor.
Compared with the prior art, the advantages of the present invention are as follows:
1, automobile power back door Overtemperature protection device of motor of the present invention, by by main control module, temperature monitoring module, driving
The a set of automobile power back door Overtemperature protection device of motor of module composition, can monitor the motor in automobile tail gate control system automatically
The temperature signal of operation process, when overheat temperature state occurs, automatic control motor shuts down, and protection motor is not damaged,
Simultaneously the operating for restoring motor can be automatically controlled, can be solved without human intervention when motor restores to normal temperature condition
Except overheating fault and restore the normal operation of motor, can be realized automobile power back door intelligent motor, efficient overheating protection shield.
2, automobile power back door Overtemperature protection device of motor of the present invention further uses the temperature acquisition based on thermistor
Circuit temperature collection signal, and the on-off of motor power is controlled by switching circuit, cost of implementation is low and fast response time, energy
The hardware motor overheating protection for enough realizing supper-fast response enables when motor overheating occurring in automobile power back door use process
Enough automatic quick disconnecting circuits, can satisfy the demand of automobile power back door motor overheating protection.
Detailed description of the invention
Fig. 1 is the principle schematic diagram of the present embodiment automobile power back door Overtemperature protection device of motor.
Fig. 2 is the particular circuit configurations schematic diagram of temperature collection circuit in the present embodiment.
Fig. 3 is the particular circuit configurations schematic diagram of drive module in the present embodiment.
Fig. 4 is the concrete structure schematic diagram of automobile power back door Overtemperature protection device of motor in the present embodiment.
Marginal data: 1, main control module；11, access unit；12, comparison judgment unit；13, drive signal generation unit；
2, temperature monitoring module；3, drive module；4, motor.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
It limits the scope of the invention.
As shown in Figure 1, the present embodiment automobile power back door Overtemperature protection device of motor include main control module 1 and respectively with
Main control module 1 connect temperature monitoring module 2, drive module 3, temperature monitoring module 2, drive module 3 respectively with automobile tail gate
Motor 4 connects in control system, and temperature monitoring module 2 monitors the temperature signal in 4 operation process of motor, and is sent to master control mould
Block 1, main control module 1 judges corresponding state of temperature according to the temperature signal received, when being judged as overheat temperature state, control
3 driving motor 4 of drive module processed shuts down, and when being judged as recovery normal temperature condition, control drive module 3 is driven
Motor 4 restores operating.Above-mentioned motor 4 can inhale the institutes such as lock motor for strut motor, tail-gate in automobile power back door control system
The motor that need to be protected.
The present embodiment constitutes a set of automobile power back door by setting main control module 1, temperature monitoring module 2, drive module 3
Overtemperature protection device of motor can monitor the temperature signal of 4 operation process of motor in automobile tail gate control system automatically, work as hair
Automatic control motor 4 shuts down when raw overheat temperature state, and protection motor is not damaged, while can restore extremely in motor 4
When normal temperature condition, the operating for restoring motor 4 is automatically controlled, overheating fault can be released without human intervention and restore motor
4 normal operation can be realized automobile power back door intelligent motor, efficient overheating protection.
In the present embodiment, temperature monitoring module 2 specifically uses the temperature collection circuit based on thermistor, passes through temperature-sensitive electricity
The temperature signal of the temperature collection circuit acquisition motor 4 of resistance, the temperature of motor 4 can be quickly detected based on thermistor, thus
The hardware motor overheating protection of supper-fast response is provided, and cost of implementation is low, installation is simple, can satisfy automobile power back door electricity
The demand of machine overheating protection.
In the present embodiment, temperature collection circuit specifically includes sequentially connected thermistor, signal access circuit and letter
Number conditioning circuit, thermistor monitor the temperature signal in 4 operation process of motor, and signal accesses circuit access thermistor monitoring
The temperature signal arrived, output is to main control module 1 after signal conditioning circuit carries out signal condition, and main control module 1 is according to receiving
Signal judge the state of temperature of motor 4.
As shown in Fig. 2, thermistor specifically uses the PT100 of three-wire system in the present embodiment, signal access circuit specifically makes
With the port PT100 interface P1 of four-wire system, the port P1 is realized by the way that Drv+ and SEN+ are connected together with three-wire system PT100's
Connection, signal conditioning circuit is using being a rail-to-rail amplifier AD623, and wherein R3=10K, amplification factor are G=(1+
100/10)=11 times, i.e., the measured value of Vpin_in1 is that PT100 both end voltage amplifies the value after 11 times, while using ADC all the way
Sample port PIN_IN2, in conjunction with resistanceR5 carries out current sample,The value (R5=1K) of value and resistance R5 by Vpin_in2 can
It calculates and flows through the electric current of PT100, PT100 temperature-coefficient of electrical resistance k=0.385 Ω/DEG C, when R=100 DEG C of its resistance value, indicate temperature
Angle value is 0 DEG C, every to increase 1 DEG C of its resistance value 0.385 Ω of increase, using the sampled value calculating process of foregoing circuit specifically:
Ipt=Vpin_in2/1000；
Rpt=Vpin_in1/ (Ipt*11)；
T=(Rpt-100)/0.385；
T amplify 10 times obtain final result Ta=10T=((2361*Vpin_in1)/(Vpin_in2) -2597, i.e.,
The temperature value that thermistor monitors can be obtained by the value of Vpin_in1, Vpin_in2.
In the present embodiment, drive module 3 specifically uses switching circuit, and switching circuit connect with the power supply of motor 4, opens
Powered-down road controls on-off according to the driving signal that main control module 1 is sent, to control the on-off of the power supply of motor 4, so that vapour
When occurring motor overheating in vehicle electric tail gate use process can quick disconnecting circuit automatically, realize quick response overheating fault
Carry out the overheating protection of motor.
As shown in figure 3, switching circuit specifically includes first switch tube Q1 and second switch Q2 in the present embodiment, first
The driving signal that the grid access main control module 1 of switching tube Q1 is sent, drain electrode are connected to second switch Q2's by a resistance
The drain electrode of grid, second switch Q2 is connect by diode D1 with the power supply of motor 4, when driving signal MOTO_EN is
When low level, first switch tube Q1, second switch Q2 are disconnected to control the power supply of cutting motor 4, work as driving signal
When MOTO_EN is high level, first switch tube Q1, second switch Q2 conducting are to control the power supply for accessing motor 4.
Referring to Fig. 3, the present embodiment switching circuit controls motor power management using metal-oxide-semiconductor circuit, works as driving signal
When MOTO_EN is high level, over the ground due to first switch tube Q1 conducting, so that second switch Q2 be driven to be connected, VCC is to motor
Power supply；When driving signal MOTO_EN is low level, since first switch tube Q1 is not turned on, second switch Q2 is not led to also not
Conducting, VCC cannot power to motor, to realize automatically accessing, cutting off for motor power.
In the present embodiment, main control module 1 includes sequentially connected access unit 11, comparison judgment unit 12 and driving letter
Number generate unit 13, the temperature signal that 11 cut-in temperature monitoring modular 2 of access unit monitors, export to comparison judgment unit
12, the temperature signal received is compared by comparison judgment unit 12 with default overheat threshold value, if more than default overheat threshold value
Then it is judged as that overheat temperature state, control drive signal generation unit 13 generate the first driving signal, stops transporting with driving motor 4
Turn, be judged as if the temperature signal received is less than default overheat threshold value restore to normal temperature condition after a specified period of time,
It controls drive signal generation unit 13 and generates the second driving signal, restore to operate with driving motor 4, so that motor 4 was reaching
It being disconnected immediately when hot state of temperature and stops motor 4, the temperature of motor 4 is down to after normal temperature restores operating again again, so as to
To restore the use of automobile power back door.The threshold value of above-mentioned over-temperature condition judgement can flexible setting according to actual needs.
As shown in figure 4, the present embodiment main control module 1 specifically uses MCU chip, and when above-mentioned apparatus realizes overheating protection, tool
Body is by temperature collection circuit to monitoring temperature is carried out in 4 operation process of motor, motor 4 during operation adopted by temperature by temperature
Temperature value T is calculated after collector acquisition and is sent to MCU, and MCU is by the default electricity of the temperature value T received and MCU inner setting
Stream threshold value is compared, when the electric current that temperature collection circuit monitors is greater than the predetermined current threshold of MCU inner setting, MCU
Control motor driven pin provides low level, and motor 4 is allowed to immediately enter the state of shutting down；It is monitored when temperature collection circuit
When electric current is less than the predetermined current threshold of MCU inner setting, MCU controls motor driven pin and exports high level, allow motor 4 at once
It remains in operation, restores the work of motor, realize that motor temperature overheats quick, intelligent protection.
In the present embodiment, it is less than overheat preset threshold, big when comparison judgment unit 12 determines the temperature signal that receives
When default overtemperature preset threshold, drive signal generation unit 13 sends third driving signal with 4 fall-back of driving motor.When
If motor 4 is not up to superheat state in automobile power back door use process, and temperature is in higher level simultaneously, at this time motor 4
Continue to run well a possibility that overheating, is larger, if stopping motor 4 and will affect the normal use of automobile tail gate, this implementation
By being not up to superheat state in the state of temperature of motor 4, when temperature is higher than specified level, control 4 reduction of speed of motor operates example, can
To control 4 reduction of speed of motor in time before motor overheating failure occurs to reduce temperature, while the use of automobile tail gate will not be stopped.
In the present embodiment, the output end of temperature monitoring module 2 is additionally provided with triggering and keeps module, for temperature monitoring mould
The output signal of block 2 carries out triggering holding, so that having temperature protection signal self-retaining function.
It further include reseting module in the present embodiment, one end of reseting module keeps module to connect with the triggering, the other end
It is connect with the reset terminal of main control module 1, control is resetted for executing, to realize reset function.
In the present embodiment, temperature monitoring module 2 is connect by starting control module 5 with motor 4, and starting control module 5 is real
When monitoring automobile tail gate is opened, the telecommand closed and automobile tail gate complete the state opened, closed, when monitoring to receive
When to telecommand, control temperature monitoring module 2 connect with motor 4, and when monitoring that automobile tail gate is completed to open, closing is moved
When making, control temperature monitoring module 2 is disconnected with motor 4.Overheating fault occurs for motor usual in automobile power back door system
It is all to be opened, in the use process of closing in electric tail gate, overheating fault, this reality will not usually occur when not in use for electric tail gate
The state that example monitors automobile tail gate by setting starting control module 5 is applied, starts or closes when by way of electronic or remote control
When automobile tail gate, just controls temperature monitoring module 2 and connect with motor 4, control is disconnected when automobile tail gate completes opening, closing motion
Temperature monitoring module 2 is opened to disconnect entire overtemperature protection system, on the basis of guaranteeing overheating protection performance, can be effectively reduced
Power consumption, while avoiding protective device from working long hours and causing device failure.Above-mentioned only presently preferred embodiments of the present invention, not
It is intended that the present invention is limited in any way.Although the present invention has been disclosed as a preferred embodiment, it is not limited to
The present invention.Therefore, anything that does not depart from the technical scheme of the invention, technical spirit does above embodiments according to the present invention
Any simple modifications, equivalents, and modifications, all shall fall within the protection scope of the technical scheme of the invention.
Claims (10)
1. a kind of automobile power back door Overtemperature protection device of motor, it is characterised in that: including main control module (1) and respectively with institute
State temperature monitoring module (2), the drive module (3) of main control module (1) connection, the temperature monitoring module (2), drive module
(3) it is connect respectively with motor (4) in automobile tail gate control system, the temperature monitoring module (2) monitors motor (4) operating
Temperature signal in the process, and it is sent to the main control module (1), the main control module (1) is according to the temperature received
Signal judges corresponding state of temperature, when being judged as overheat temperature state, controls the drive module (3) and drives the motor
(4) it shuts down, and when being judged as recovery normal temperature condition, controls the drive module (3) and drive the motor (4)
Restore operating.
2. automobile power back door Overtemperature protection device of motor according to claim 1, it is characterised in that: the temperature monitoring
Module (2) is the temperature collection circuit based on thermistor.
3. automobile power back door Overtemperature protection device of motor according to claim 2, it is characterised in that: the temperature acquisition
Circuit includes sequentially connected thermistor, signal access circuit and signal conditioning circuit, described in the thermistor monitoring
Temperature signal in motor (4) operation process, the signal access circuit access the temperature signal that the thermistor monitors,
The main control module (1) is given in output after the signal conditioning circuit carries out signal condition.
4. automobile power back door Overtemperature protection device of motor according to claim 1 or 2 or 3, it is characterised in that: the drive
Dynamic model block (3) is switching circuit, and the switching circuit connect with the power supply of the motor (4), the switching circuit according to
The driving signal that the main control module (1) sends controls on-off, to control the on-off of the power supply of the motor (4).
5. automobile power back door Overtemperature protection device of motor according to claim 4, it is characterised in that: the switching circuit
Main control module (1) hair is accessed including the grid of first switch tube Q1 and second switch Q2, the first switch tube Q1
The driving signal sent, drain electrode are connected to the grid of the second switch Q2, the leakage of the second switch Q2 by a resistance
Pole is connect by diode D1 with the power supply of the motor (4), and when the driving signal is low level, described first is opened
It closes pipe Q1, second switch Q2 to disconnect to control the power supply for cutting off the motor (4), when the driving signal is high level
When, the first switch tube Q1, second switch Q2 are connected to control the power supply for accessing the motor (4).
6. automobile power back door Overtemperature protection device of motor according to claim 1 or 2 or 3, it is characterised in that: the master
Control module (1) includes sequentially connected access unit (11), comparison judgment unit (12) and drive signal generation unit (13),
The access unit (11) accesses the temperature signal that the temperature monitoring module (2) monitors, exports to the multilevel iudge list
First (12), the temperature signal received is compared by the comparison judgment unit (12) with default overheat threshold value, if more than institute
It states default overheat threshold value and is then judged as overheat temperature state, control the drive signal generation unit (13) and generate the first driving letter
Number, to drive the motor (4) to shut down, if the temperature signal received after a specified period of time is less than the default overheat threshold
Value, which is then judged as, to be restored to normal temperature condition, is controlled the drive signal generation unit (13) and is generated the second driving signal, with
The motor (4) are driven to restore operating.
7. automobile power back door Overtemperature protection device of motor according to claim 1 or 2 or 3, it is characterised in that: when described
Comparison judgment unit (12) determines the temperature signal received and is less than the overheat preset threshold, is greater than the default threshold of default overtemperature
When value, the drive signal generation unit (13) sends third driving signal to drive the motor (4) fall-back.
8. automobile power back door Overtemperature protection device of motor according to claim 1 or 2 or 3, it is characterised in that: the temperature
The output end of degree monitoring modular (2) is additionally provided with triggering and keeps module, for the output signal to the temperature monitoring module (2)
Carry out triggering holding.
9. automobile power back door Overtemperature protection device of motor according to claim 8, it is characterised in that: further include resetting mould
Block, one end of the reseting module keep module to connect with the triggering, and the reset terminal of the other end and the main control module (1) connects
It connects, resets control for executing.
10. automobile power back door Overtemperature protection device of motor according to claim 1 or 2 or 3, it is characterised in that: described
Temperature monitoring module (2) is connect by starting control module with the motor (4), the starting control module real-time monitoring automobile
The telecommand and automobile tail gate that tail-gate opens, closes complete the state opened, closed, when monitoring to receive the remote control
When instruction, control the temperature monitoring module (2) and connect with the motor (4), and when monitor automobile tail gate complete open,
When closing motion, controls the temperature monitoring module (2) and disconnected with the motor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910173378.4A CN109888734B (en) | 2019-03-07 | 2019-03-07 | Overheat protection device for motor of electric tail gate of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910173378.4A CN109888734B (en) | 2019-03-07 | 2019-03-07 | Overheat protection device for motor of electric tail gate of automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109888734A true CN109888734A (en) | 2019-06-14 |
| CN109888734B CN109888734B (en) | 2021-12-28 |
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ID=66931253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910173378.4A Active CN109888734B (en) | 2019-03-07 | 2019-03-07 | Overheat protection device for motor of electric tail gate of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109888734B (en) |
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| WO2015098882A1 (en) * | 2013-12-25 | 2015-07-02 | アイシン精機 株式会社 | Drive control device for opening/closing body of vehicle |
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| CN107401347A (en) * | 2017-08-25 | 2017-11-28 | 重庆海德世拉索系统（集团）有限公司 | The motorcar electric tailgate control method of adaptive environment temperature |
| CN207010638U (en) * | 2017-05-25 | 2018-02-13 | 广州视琨电子科技有限公司 | On-off circuit |
| CN207725254U (en) * | 2018-01-12 | 2018-08-14 | 厦门格邦科技有限公司 | Novel electric automobile motor control panel |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5189350A (en) * | 1988-02-18 | 1993-02-23 | J. H. Fenner & Co., Ltd. | Monitoring system |
| US20060042166A1 (en) * | 2004-08-24 | 2006-03-02 | Berklich Louis W Jr | Integrated spring actuator strut assembly with threaded nut in gas spring |
| CN102255282A (en) * | 2011-07-18 | 2011-11-23 | 重庆长安汽车股份有限公司 | Temperature control method for permanent magnet synchronous motor and intelligent power unit system of pure electric vehicle |
| WO2015098882A1 (en) * | 2013-12-25 | 2015-07-02 | アイシン精機 株式会社 | Drive control device for opening/closing body of vehicle |
| CN104934941A (en) * | 2015-05-08 | 2015-09-23 | 北京汽车股份有限公司 | Luggage case door lock motor protection method and system |
| CN106522719A (en) * | 2016-12-10 | 2017-03-22 | 东莞市欧诗迈电子科技有限公司 | System and method for protecting electric tail gate stay bar |
| CN207010638U (en) * | 2017-05-25 | 2018-02-13 | 广州视琨电子科技有限公司 | On-off circuit |
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| CN207725254U (en) * | 2018-01-12 | 2018-08-14 | 厦门格邦科技有限公司 | Novel electric automobile motor control panel |
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| Publication number | Publication date |
|---|---|
| CN109888734B (en) | 2021-12-28 |
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