CN212376371U - Intelligent ground lock with remote unlocking and locking functions - Google Patents
Intelligent ground lock with remote unlocking and locking functions Download PDFInfo
- Publication number
- CN212376371U CN212376371U CN202020486219.8U CN202020486219U CN212376371U CN 212376371 U CN212376371 U CN 212376371U CN 202020486219 U CN202020486219 U CN 202020486219U CN 212376371 U CN212376371 U CN 212376371U
- Authority
- CN
- China
- Prior art keywords
- geomagnetic
- controller
- signal
- ground lock
- main controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to an intelligence ground lock technical field especially relates to an intelligence ground lock with strange land is unblanked and is closed lock function. The utility model provides an intelligence ground lock with strange land is unblanked and is locked function of shutting, include: the device comprises a wireless communication module, a main controller, a ground lock driving circuit, a geomagnetic sensor, a geomagnetic controller and a power supply module; the wireless communication module is connected with the main controller and used for receiving an external operation instruction sent by an APP on the intelligent mobile terminal and sending the received external operation instruction to the main controller; the main controller receives an external operation instruction, and sends an unlocking signal to the ground lock driving circuit when the external operation instruction is determined to be the unlocking instruction; and when the external operation instruction is determined to be a locking instruction, sending a locking signal to the ground lock driving circuit. The utility model provides an intelligence ground lock has the advantage that the strange land unblanked, closed the lock, and is more intelligent.
Description
Technical Field
The utility model relates to an intelligence ground lock technical field especially relates to an intelligence ground lock with strange land is unblanked and is closed lock function.
Background
Along with the more and more people's needs of intelligent life, the parking stall ground lock of intelligent humanized design comes into force. The most common ground lock is a mechanical manual ground lock, which requires the user to get off the vehicle for operation during use, and is very inconvenient. In recent years, some remote control parking place ground locks have appeared. However, the existing remote control parking space ground lock is unlocked and locked by near field communication modes such as bluetooth and WIFI, and one problem brought by the existing remote control parking space ground lock is that: when the owner of the parking space is in different places, the parking space can not be unlocked or locked. Meanwhile, in the parking space detection technology, the existing detection method, such as ultrasonic waves, infrared rays and the like, has great self limitation, is very easy to be influenced by the environment, and the image identification cost of the camera is very high. These result in earth magnetism detection technology to use more and more extensively, nevertheless in current earth magnetism detection method, still exist the accuracy not high, need detect work all the time, produce the inside of device or ambient temperature influence easily and produce the null shift, whether the work is not controlled by user's flexibility etc. problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an intelligent ground lock that has strange land and unblank and close the lock function to can real-time detection parking stall state, control is simple and convenient, and is with low costs, and the consumption is little.
The technical scheme is as follows:
in order to solve the above problem, the utility model provides an intelligence ground lock with strange land is unblanked and is closed lock function, include: the device comprises a wireless communication module, a main controller, a ground lock driving circuit, a geomagnetic sensor, a geomagnetic controller, a Beidou positioning module and a power supply module; wherein the content of the first and second substances,
the wireless communication module is connected with the main controller and used for receiving an external operation instruction sent by an APP on the mobile terminal and sending the received external operation instruction to the main controller; the wireless communication module comprises a communication module of a 3G/4G wireless communication mode;
the main controller receives an external operation instruction, and when the external operation instruction is determined to be an unlocking instruction, the main controller sends an unlocking signal to the ground lock driving circuit and sends a wake-up signal to the geomagnetic controller; when the external operation instruction is determined to be a locking instruction, a locking signal is sent to a ground lock driving circuit, and a sleep signal is sent to a geomagnetic controller; when a parking space no-vehicle signal sent by a geomagnetic controller is received, a lock closing signal is sent to a ground lock driving circuit, and meanwhile a dormancy signal is sent to the geomagnetic controller;
the geomagnetic controller sends a configuration signal to the geomagnetic sensor after receiving the wake-up signal, judges whether a vehicle is in a parking space where the geomagnetic lock is located according to geomagnetic intensity data returned by the geomagnetic sensor, and sends a parking space vehicle-free signal to the main controller when determining that the vehicle is not in the parking space; entering a standby state when a sleep signal is received;
the geomagnetic sensor acquires data of geomagnetic intensity around the geomagnetic lock according to the configuration signal and sends the acquired data of the geomagnetic intensity to the geomagnetic controller;
the Beidou positioning module is connected with the main controller and realizes a positioning function through a Beidou positioning system;
the power module is used for supplying power to the wireless communication module, the main controller, the ground lock driving circuit, the geomagnetic sensor, the Beidou positioning module and the geomagnetic controller.
Preferably, the power module includes a lithium battery module.
Has the advantages that:
1. the opening and closing of the ground lock can be controlled remotely, and the ground lock is more intelligent.
2. Through two axial earth magnetism intensity data gather around the ground lock, avoided effectively when single axial is gathered because there is earth magnetism zero point and lead to judging the parking stall state for not having the problem of car under the car condition.
3. After the parking space is judged to have the car, the intelligent remote control ground lock enters an intermittent working mode, configuration information is sent to the geomagnetic sensor intermittently, and the intelligent remote control ground lock is in a standby state under other conditions, so that the power consumption of the system is effectively reduced.
Drawings
Fig. 1 is the appearance schematic diagram of the intelligent ground lock of the utility model.
Fig. 2 is a schematic diagram of the intelligent ground lock of the present invention.
Fig. 3 is the connection relationship diagram of the intelligent lock, the server and the mobile terminal of the present invention.
In the figure: 100-intelligent locking; 110-a wireless communication module; 120-a master controller; 130-ground lock drive circuit; 140-a geomagnetic controller; 150-a geomagnetic sensor; 160-a power supply module; 170-big dipper positioning module; 101-a server; 103-mobile terminal.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the utility model provides an intelligence ground lock with strange land is unblanked and is closed lock function, include: the wireless communication module 110, the main controller 120, the ground lock driving circuit 130, the geomagnetic sensor 150, the geomagnetic controller 140, the Beidou positioning module 170 and the power module 160; wherein the content of the first and second substances,
the wireless communication module 110 is connected to the main controller 120, and is configured to receive an external operation instruction sent by an APP on a mobile terminal, and send the received external operation instruction to the main controller 120; the wireless communication module 110 includes a communication module of a 3G/4G wireless communication mode;
the main controller 120 receives an external operation instruction, and when it is determined that the external operation instruction is an unlocking instruction, sends an unlocking signal to the ground lock driving circuit 130, and sends a wake-up signal to the geomagnetic controller 140; when the external operation instruction is determined to be a lock-off instruction, sending a lock-off signal to the ground lock driving circuit 130, and simultaneously sending a sleep signal to the geomagnetic controller 140; when receiving a parking space no-vehicle signal sent by the geomagnetic controller 140, sending a lock closing signal to the geomagnetic lock driving circuit 130, and simultaneously sending a sleep signal to the geomagnetic controller 140;
the geomagnetic controller 140 sends a configuration signal to the geomagnetic sensor 150 after receiving the wake-up signal, judges whether a vehicle is located in a parking space where the ground lock is located according to geomagnetic intensity data returned by the geomagnetic sensor 150, and sends a parking space non-vehicle signal to the master controller when determining that no vehicle is located; entering a standby state when a sleep signal is received;
the geomagnetic sensor 150 performs data acquisition of geomagnetic intensity around the geomagnetic lock according to the configuration signal, and sends the acquired geomagnetic intensity data to the geomagnetic controller 140;
the Beidou positioning module 170 is connected with the main controller 120, and realizes a positioning function through a Beidou positioning system;
the power module 160 is configured to supply power to the wireless communication module 110, the main controller 120, the ground lock driving circuit 130, the geomagnetic sensor 150, the beidou positioning module, and the geomagnetic controller 140.
The wireless communication module 110 is connected to the main controller 120, and is configured to receive an external operation instruction sent by an APP on the mobile terminal 103, and send the received external operation instruction to the main controller 120. In the prior art, some remote control parking place ground locks unlock and lock through near field communication modes such as bluetooth and WIFI, and the parking place ground locks cannot be unlocked and locked in different places. In order to solve the problems in the prior art, referring to fig. 3, the wireless communication module 110 in the intelligent lock 100 of the present invention is connected to the server 101, so as to synchronize the occupation information of the intelligent lock 100 with the server 101, and further transmit the occupation information to the mobile terminal 103; the mobile terminal 103 is connected to the server 101, and is configured to send an operation instruction for unlocking or locking the lock to the server 101, the server transmits the operation instruction to the wireless communication module 110, and the main controller 120 receives the corresponding operation instruction and performs an on-off operation on the intelligent lock. That is to say, based on cell-phone communication technologies such as 2G, 3G or 4G for lock direct access cloud end server (wide area network) in intelligence, can realize the connection remote control anytime and anywhere, it is more intelligent.
The main controller 120 receives an external operation instruction, and when the external operation instruction is determined to be an unlocking instruction, sends an unlocking signal to the ground lock driving circuit 130, and simultaneously sends a wake-up signal to the geomagnetic controller 140; when the external operation instruction is determined to be a lock-off instruction, sending a lock-off signal to the ground lock driving circuit 130, and simultaneously sending a sleep signal to the geomagnetic controller 140; when receiving the parking space no-vehicle signal sent by the geomagnetic controller 140, the geomagnetic controller 140 sends a lock-off signal to the ground lock driving circuit 130, and simultaneously sends a sleep signal to the geomagnetic controller 140.
The geomagnetic controller 140 sends a configuration signal to the geomagnetic sensor 150 after receiving the wake-up signal, and determines whether there is a car in the parking space where the ground lock is located according to geomagnetic intensity data returned by the geomagnetic sensor 150. The ground lock in the prior art generally has no parking space detection function, and the lock cannot be automatically locked when a vehicle leaves a parking space, so that the vehicle is easily scratched from the ground lock because the vehicle does not completely drive away. According to the invention, by collecting the geomagnetic intensity data around the ground lock, when the vehicle drives away from the parking space where the ground lock is located, the ground lock can be automatically controlled to be closed according to the change of the geomagnetic intensity data around the ground lock without user operation, so that the vehicle and the ground lock can be prevented from being scraped due to the fact that the vehicle does not completely drive away from the ground lock, and the control accuracy is good. The geomagnetic controller 140 sends a parking space non-vehicle signal to the master controller 120 when determining that there is no vehicle. When the geomagnetic controller 140 receives the sleep signal, it enters a standby state. In the invention, when the external operation instruction is the lock closing instruction, or the external operation instruction is the lock closing instruction but no vehicle exists in the parking space, the geomagnetic controller 140 enters the standby state, so that the energy consumption of the system can be reduced. In addition, by putting the geomagnetic controller 140 into the standby state under the above conditions, the workload of the geomagnetic controller 140 can be reduced, and the service life thereof can be improved.
The geomagnetic sensor 150 performs data acquisition of geomagnetic intensity around the geomagnetic lock according to the configuration signal, and transmits the acquired geomagnetic intensity data to the geomagnetic controller 140. When collecting the earth magnetism intensity data around the ground lock, if only gather the earth magnetism intensity data of a circumferential direction, because there is earth magnetism zero point under the car condition, the parking stall state of having the car condition is judged as not having the car easily. To avoid this problem, according to a preferred embodiment of the present invention, the acquisition of data of the geomagnetic intensity around the geomagnetic lock by the geomagnetic sensor 150 according to the configuration signal includes:
the geomagnetic sensor 150 collects geomagnetic intensity data in a first axial direction and a second axial direction according to the configuration signal, wherein the first axial direction is a vertical upward direction, and the second axial direction is a traveling direction in which the vehicle is relatively locked to enter or exit.
In the process that the vehicle drives in and out the parking stall, the earth magnetism intensity data around the ground lock can change, consequently can judge according to the earth magnetism intensity data that earth magnetism sensor 150 returned and all have the car on the parking stall. The change of environment can the size of electric field intensity data produce the influence, and in addition, there is detection error in real estate sensor 150 itself, if only take place to change as the standard of judging whether there is the car on the parking stall with geomagnetic intensity data around the ground lock that geomagnetic sensor 150 gathered, make the judged result inconsistent with reality easily, reduced the control accuracy of intelligent remote control ground lock. Based on this, according to the preferred embodiment of the present invention, the geomagnetic controller 140 stores the first axial no-vehicle environment value and the second axial no-vehicle environment value, and the determining whether there is a vehicle in the parking space where the geomagnetic sensor 150 returns according to the geomagnetic intensity data includes: the geomagnetic controller 140 determines a first absolute difference between the first axial geomagnetic intensity data and the current first axial no-vehicle environment value and a second absolute difference between the second axial geomagnetic intensity data and the current second axial no-vehicle environment value according to the geomagnetic intensity data returned by the geomagnetic sensor 150; the first absolute difference is an absolute value of a difference between the first axial geomagnetic intensity data and the current first axial non-vehicle environment value, and the second absolute difference is an absolute value of a difference between the second axial geomagnetic intensity data and the current second axial non-vehicle environment value;
if the first absolute difference and the second absolute difference do not exceed the preset value, the geomagnetic controller 140 sends a parking space no-vehicle signal to the main controller 120;
if at least one of the first absolute difference and the second absolute difference exceeds a preset value, the geomagnetic controller 140 judges that the parking space where the ground lock is located has a vehicle, and enters an intermittent working mode;
the intermittent working mode is as follows:
the geomagnetic controller 140 intermittently transmits configuration information to the geomagnetic sensor 150;
configuration information for each transmission: if at least one of the first absolute difference and the second absolute difference exceeds a preset value, the geomagnetic controller 140 judges that the parking space where the ground lock is located has a vehicle, and keeps an intermittent working mode; if the first absolute difference and the second absolute difference do not exceed the preset values, the geomagnetic controller 140 stops the intermittent operation mode, and sends a parking space no-vehicle signal to the main controller 120.
After the parking space is judged to have the car, the intelligent remote control ground lock enters an intermittent working mode, configuration information is sent to the geomagnetic sensor 150 intermittently, and the parking space is in a standby state under other conditions, so that the power consumption of the system is effectively reduced. Preferably, the intermittent operation mode is: the geomagnetic controller 140 sends configuration information to the geomagnetic sensor 150 when the real-time clock RTC wakes up intermittently;
after stopping the intermittent operation mode and before sending the parking space no-vehicle signal to the main controller 120, the geomagnetic controller 140 further performs the following processes:
transmitting a configuration signal to the geomagnetic sensor 150; filtering geomagnetic intensity data returned by the geomagnetic sensor 150, and determining a first absolute difference and a second absolute difference according to the filtered geomagnetic intensity data; if the first absolute difference and the second absolute difference do not exceed the preset value, starting the state machine, wherein the state value of the state machine is 1;
in the process from the state 1 to the state 2, if at least one of the first absolute difference and the second absolute difference exceeds a preset value, the geomagnetic controller 140 judges that the parking space where the ground lock is located has a vehicle, the state crashes, and the geomagnetic controller 140 resumes the intermittent working mode, otherwise, the state value of the state machine is added by 1, and the state machine enters the next state; if the state machine enters state 3, the geomagnetic controller 140 stops the intermittent operation mode, and sends a parking space empty signal to the main controller 120. The filtering algorithm can be selected according to actual conditions, for example, a first-off filtering algorithm is adopted for filtering processing. By adopting a filtering algorithm and a state machine algorithm, the influence of external interference on geomagnetic intensity data acquisition is effectively avoided, and the accuracy of parking space detection is further improved, so that the detection result has no chance.
In order to reduce the influence of the contingency of the collected geomagnetic intensity data around the ground lock on the parking space state judgment result, configuration signals can be continuously sent to the geomagnetic sensor 150 within a preset time, and the average value of the geomagnetic intensity data corresponding to each configuration signal is used as the current axial geomagnetic intensity data. Specific addresses: after the geomagnetic controller 140 receives the wake-up signal, it continuously sends configuration signals to the geomagnetic sensor 150 for a predetermined time, and takes the average of the geomagnetic intensity data corresponding to each configuration signal as the first axial geomagnetic intensity data; and determining the average value of all the geomagnetic intensity data in the second axial direction in the predetermined time according to the geomagnetic intensity data returned by the geomagnetic sensor 150, and taking the average value as the second axial geomagnetic intensity data. The predetermined time may be set according to actual conditions, and the present invention is not limited to this.
In the long-term use process, due to the change of the internal temperature or the environmental temperature of the device, unstable power supply voltage and the like, zero drift is easy to occur. Therefore, in the process of judging the parking space state, if a fixed first axial no-vehicle environment value and a fixed second axial no-vehicle environment value are adopted, the phenomenon of misjudgment is easily caused when the parking space state is judged. In order to avoid the influence of the zero drift phenomenon on the parking space state judgment result, the first axial no-vehicle environment value and the second axial no-vehicle environment value can be updated in real time according to the geomagnetic intensity data around the ground lock collected by the geomagnetic sensor 150. The geomagnetic controller 140 prestores geomagnetic intensity variation ranges in the first axial direction and the second axial direction in a vehicle-free environment;
the geomagnetic controller 140 collects geomagnetic intensity data in a first axial direction in a vehicle-free environment as a current first axial vehicle-free environment value and collects geomagnetic intensity data in a second axial direction in the vehicle-free environment as a current second axial vehicle-free environment value when the geomagnetic controller is used for the first time;
when the geomagnetic controller 140 is not used for the first time, the current first axial no-vehicle environment value and the current second axial no-vehicle environment value are determined according to the following methods:
and determining a third absolute difference between the current geomagnetic intensity environment value in the first axial direction and the last vehicle-free environment value in the first axial direction and a fourth absolute difference between the current geomagnetic intensity environment value in the second axial direction and the last vehicle-free environment value in the second axial direction according to the geomagnetic intensity data returned by the geomagnetic sensor 150. The third absolute difference is an absolute value of a difference between a current geomagnetic intensity environment value in the first axial direction and a previous vehicle-free environment value in the first axial direction, and the fourth absolute difference is an absolute value of a difference between a geomagnetic intensity environment value in the second axial direction and a previous vehicle-free environment value in the second axial direction. If the third absolute difference and the fourth absolute difference are both in the geomagnetic intensity variation range in the vehicle-free environment, taking the current geomagnetic intensity environment value in the first axial direction as the current vehicle-free environment value in the first axial direction, and taking the current geomagnetic intensity environment value in the second axial direction as the current vehicle-free environment value in the second axial direction; and otherwise, taking the last first axial no-vehicle environment value as the current first axial no-vehicle environment value, and taking the last second axial no-vehicle environment value as the current second axial no-vehicle environment value.
The Beidou positioning module 170 realizes a positioning function through a Beidou positioning system.
The power module 160 is configured to supply power to the wireless communication module 110, the main controller 120, the ground lock driving circuit 130, the geomagnetic sensor 150, the geomagnetic controller 140, and the beidou positioning module 170.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides an intelligence ground lock with strange land is unblanked and is locked function closed which characterized in that: the method comprises the following steps: the device comprises a wireless communication module, a main controller, a ground lock driving circuit, a geomagnetic sensor, a geomagnetic controller, a Beidou positioning module and a power supply module; wherein the content of the first and second substances,
the wireless communication module is connected with the main controller and used for receiving an external operation instruction sent by an APP on the mobile terminal and sending the received external operation instruction to the main controller; the wireless communication module comprises a communication module of a 3G/4G wireless communication mode;
the main controller receives an external operation instruction, and when the external operation instruction is determined to be an unlocking instruction, the main controller sends an unlocking signal to the ground lock driving circuit and sends a wake-up signal to the geomagnetic controller; when the external operation instruction is determined to be a locking instruction, a locking signal is sent to a ground lock driving circuit, and a sleep signal is sent to a geomagnetic controller; when a parking space no-vehicle signal sent by a geomagnetic controller is received, a lock closing signal is sent to a ground lock driving circuit, and meanwhile a dormancy signal is sent to the geomagnetic controller;
the geomagnetic controller sends a configuration signal to the geomagnetic sensor after receiving the wake-up signal, judges whether a vehicle is in a parking space where the geomagnetic lock is located according to geomagnetic intensity data returned by the geomagnetic sensor, and sends a parking space vehicle-free signal to the main controller when determining that the vehicle is not in the parking space; entering a standby state when a sleep signal is received;
the geomagnetic sensor acquires data of geomagnetic intensity around the geomagnetic lock according to the configuration signal and sends the acquired data of the geomagnetic intensity to the geomagnetic controller;
the Beidou positioning module is connected with the main controller, and a positioning function is realized through a Beidou positioning system;
the power module is used for supplying power to the wireless communication module, the main controller, the ground lock driving circuit, the geomagnetic sensor, the Beidou positioning module and the geomagnetic controller.
2. The intelligent lock with remote unlocking and locking functions as claimed in claim 1, wherein: the power module includes a lithium battery module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020486219.8U CN212376371U (en) | 2020-03-30 | 2020-03-30 | Intelligent ground lock with remote unlocking and locking functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020486219.8U CN212376371U (en) | 2020-03-30 | 2020-03-30 | Intelligent ground lock with remote unlocking and locking functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212376371U true CN212376371U (en) | 2021-01-19 |
Family
ID=74159533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020486219.8U Active CN212376371U (en) | 2020-03-30 | 2020-03-30 | Intelligent ground lock with remote unlocking and locking functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212376371U (en) |
-
2020
- 2020-03-30 CN CN202020486219.8U patent/CN212376371U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103770701B (en) | A kind of certain objects closely vision dead zone human body detection method, device and correlation technique | |
| CN208076969U (en) | A kind of Wireless well cover monitoring device | |
| CN105756391A (en) | Remote-control intelligent floor lock having parking place state detecting function | |
| CN111665755A (en) | Remote multi-end monitoring system and method for track cleaning vehicle | |
| CN209199312U (en) | A kind of old man's anti-wander-away device based on the narrowband NB-IOT technology of Internet of things | |
| CN115567892A (en) | Shared electric bicycle control method based on 4G intelligent central control device | |
| CN108805494A (en) | Solid waste collecting and transferring system based on technology of Internet of things and its collecting and transportation method | |
| CN205365524U (en) | Vehicle intelligence anti -theft system based on unusual vibration monitoring | |
| CN212376371U (en) | Intelligent ground lock with remote unlocking and locking functions | |
| CN208722268U (en) | Intelligent parking taximeter based on Internet of Things | |
| CN208796443U (en) | A kind of parking stall measure system based on fmcw radar and geomagnetism detecting | |
| CN104713595A (en) | Water area monitoring device and control method | |
| CN207597306U (en) | Intelligently lock and intelligently lock system | |
| CN210742538U (en) | Low-power-consumption wireless rainfall acquisition instrument supporting Beidou positioning | |
| CN206309090U (en) | A kind of intelligently lock unlocked with strange land and shut function | |
| CN209265698U (en) | A kind of vehicle detection apparatus based on bimodulus non-contact inductive | |
| CN107650839A (en) | A kind of new-energy automobile remote monitoring terminal | |
| CN209028664U (en) | A kind of Internet of Things harmful influence transfer cask inlet and outlet intelligent lock system based on GPRS | |
| RU150328U1 (en) | MOBILE OBJECTS MONITORING DEVICE | |
| CN204297029U (en) | Water area monitoring device | |
| CN212990333U (en) | Vehicle detector system based on three-mode judgment | |
| CN213926385U (en) | Novel intelligent waterproof well lid with water meter centralized reading and environment monitoring functions | |
| CN205541481U (en) | Infrared detection management device of appliance computer | |
| CN112882427A (en) | Management system for monitoring intelligent road cone | |
| CN112700631A (en) | Low-power consumption remote measuring terminal system with Bluetooth debugging function and remote debugging method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |