CN112834020A - Low-power-consumption data acquisition system and method for tray - Google Patents
Low-power-consumption data acquisition system and method for tray Download PDFInfo
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- CN112834020A CN112834020A CN202011615562.9A CN202011615562A CN112834020A CN 112834020 A CN112834020 A CN 112834020A CN 202011615562 A CN202011615562 A CN 202011615562A CN 112834020 A CN112834020 A CN 112834020A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Warehouses Or Storage Devices (AREA)
Abstract
The invention relates to the technical field of logistics, and particularly discloses a low-power-consumption data acquisition system for trays, which comprises a gateway and a plurality of trays, wherein each tray comprises a tray body, and a communication module and a control chip which are arranged on the tray body; the tray also comprises a vibration sensor arranged on the tray body; the vibration sensor is used for sending a vibration signal to the control chip when detecting the vibration of the tray body; the control chip is used for exiting the sleep mode after receiving the vibration signal; the control chip is also used for controlling the communication module to send a first heartbeat packet to the gateway after exiting the sleep mode; the gateway is used for randomly generating a first preset time length after receiving the first heartbeat packet and sending the first preset time length to the communication module; the control chip is further used for controlling the communication module to send a first heartbeat packet to the gateway every other first preset time after the first preset time is obtained from the communication module. By adopting the technical scheme of the invention, network congestion can be avoided.
Description
Technical Field
The invention relates to the technical field of logistics, in particular to a low-power-consumption data acquisition system and method for a tray.
Background
The tray is the most basic unit carrying device in the modern logistics system, concentrates scattered goods into a goods unit with uniform specification, is convenient for mechanical loading, unloading, carrying, transporting and delivering, is also convenient for intensive storage management, is key basic equipment in the modern logistics industry, and has important effects on improving logistics efficiency and reducing cost.
A large number of trays are usually placed in each enterprise needing trays for use, and the trays are connected into the Internet of things in order to achieve digital management of the trays. For example, chinese patent publication No. CN109978455A discloses a novel wisdom tray based on NB-IOT technique, and it includes the tray body, the tray body includes thing networking intelligent device, thing networking intelligent device includes main control unit MCU, narrowband thing networking NB-IOT module, load interface unit ITU, built-in GPS big dipper orientation module, large capacity group battery and built-in communication antenna.
According to the scheme, through the use of the sensor and the narrow-band Internet of things technology, the position and the goods information of the tray can be mastered in real time through the mobile communication network and the mobile terminal through the management platform end at any time, and the warehousing condition is dynamically mastered. But because the tray quantity of enterprise is numerous, if every tray all carries out information interaction with the management platform end, cause the network to block up easily, moreover, the tray is in operating condition always, can consume a large amount of electric energy, lead to the continuation of the journey short, if the electric quantity that often checks power module not in time charges, can lead to whole device outage stop work, if often check power module's electric quantity, can increase the maintenance cost undoubtedly, especially under the tray keeps the condition of volume big, the maintenance cost increases by multiples.
Therefore, a low power consumption data collection system and method for a tray capable of avoiding network congestion is needed.
Disclosure of Invention
The invention provides a low-power-consumption data acquisition system and method for a tray, which can avoid network congestion.
In order to solve the technical problem, the present application provides the following technical solutions:
the low-power-consumption data acquisition system for the tray comprises a gateway and a plurality of trays, wherein each tray comprises a tray body, and a communication module and a control chip which are arranged on the tray body;
the tray also comprises a vibration sensor arranged on the tray body;
the vibration sensor is used for sending a vibration signal to the control chip when detecting the vibration of the tray body;
the control chip is used for exiting the sleep mode after receiving the vibration signal; the control chip is also used for controlling the communication module to send a first heartbeat packet to the gateway after exiting the sleep mode;
the gateway is used for randomly generating a first preset time length after receiving the first heartbeat packet and sending the first preset time length to the communication module; the control chip is further used for controlling the communication module to send a first heartbeat packet to the gateway every other first preset time after the first preset time is obtained from the communication module.
The basic scheme principle and the beneficial effects are as follows:
in this scheme, when vibration sensor did not detect the vibration signal, show that the tray body is at quiescent condition at present, not moved, and control chip is in the sleep mode this moment, and after vibration sensor detected the vibration signal, control chip withdrawed from the sleep mode again and carries out work, can effectively practice thrift the electric energy. And the vibration sensor belongs to a physical sensor switch, does not work and consumes no power when being in a static state, and saves electric energy under the condition of ensuring that the control chip can be awakened in time. During the dormancy, the tray does not produce data interaction with the gateway, can avoid meaninglessly occupying the bandwidth.
After the control chip is awakened, the first heartbeat packet is sent to the gateway through the communication module, and the tray can be indicated to be started and is in a working state. If there are multiple trays enabled at the same time, they may cause network congestion by sending the first heartbeat packet at the same time. After receiving the first heartbeat packet, the gateway randomly generates a first preset time length, and can allocate different time intervals to each tray, so that the time for each tray to subsequently send the first heartbeat packet is basically different, and network congestion can be effectively avoided.
Further, the gateway is pre-stored with a duration limit, and the gateway randomly generates a first preset duration based on the duration limit.
Through the time limit, the first preset time can be limited within a controllable range, and the random occurrence of too short or too long time intervals is avoided.
Further, the gateway is also configured to allocate an occupation period for each tray; sending the occupied time period information to a communication module;
the tray also comprises an acceleration sensor arranged on the tray body, and the control chip is also used for awakening the acceleration sensor after exiting the sleep mode and acquiring acceleration data from the acceleration sensor; and judging whether the acceleration data is greater than a threshold value, if so, sending the acceleration data greater than the threshold value to the gateway through the communication module by the control chip in the belonged occupied time period.
When the acceleration data is greater than the threshold value, the tray body may be subjected to strong impact force, the tray body may be damaged, and the goods loaded on the tray body may also be damaged, so that the acceleration data greater than the threshold value needs to be sent to the gateway through the communication module, and the tray body or the goods can be inspected based on the acceleration data.
If a plurality of trays are placed on one transport tool, the trays on the transport tool can upload acceleration data at the same time due to the violent acceleration change caused by the problems of the transport tool, network congestion is easily caused, occupied time intervals are distributed for each tray, the condition of uploading the acceleration data at the same time can be avoided,
further, the gateway is also used for sending a confirmation character to the corresponding communication module after receiving the acceleration data.
The communication module can be made aware whether the transmission was successful or not.
Further, the communication module is a LoRa wireless module.
LoRa wireless module's low power dissipation can effectively reduce the consumption of electric energy.
Further, the time period is limited to 1 to 4 minutes.
Further, the control chip is also used for starting timing after the vibration sensor stops sending the vibration signal, and when the timing reaches a second preset time length, the control chip is also used for sending a second heartbeat packet to the gateway through the communication module; the control chip is also used for entering a sleep mode after the second heartbeat packet is sent; the second preset time length is longer than the first preset time length;
the gateway is used for starting timing after receiving the first heartbeat packet, when the timing exceeds a first preset time length, a new first heartbeat packet is still not received, and a second heartbeat packet is not received during the timing period, and the gateway marks the tray corresponding to the first heartbeat packet as a stolen tray.
Because the signal coverage of the gateway is limited, after the control chip is awakened, the first heartbeat packet is sent to the gateway through the communication module every other first preset time, so that the tray can be shown to be in the signal coverage of the gateway, in other words, the tray can be considered to be in the enterprise and not stolen. The vibration sensor stops sending vibration signals to indicate that the tray is static, and when the timing reaches a second preset time length, the control chip sends a second heartbeat packet to the gateway to inform the gateway that the tray is going to sleep.
And when the tray is illegally taken out of the signal coverage range of the gateway by a person, the vibration sensor works all the time, the gateway cannot receive the second heartbeat package, the first heartbeat package is also interrupted, and the tray can be judged to be stolen.
The low-power-consumption data acquisition method for the tray uses the low-power-consumption data acquisition system for the tray.
Drawings
FIG. 1 is a logic block diagram of a low power consumption data acquisition system for a tray according to an embodiment;
FIG. 2 is a top view of the tray body according to the second embodiment;
fig. 3 is a partial longitudinal sectional view of the mounting hole in the second embodiment.
Detailed Description
The following is further detailed by way of specific embodiments:
the reference numbers in the drawings of the specification include: the device comprises a supporting seat 1, a carrying channel 2, a mounting hole 3, a telescopic cylinder 4, a resistance block 5 and a ventilation branch pipe 6.
Example one
As shown in fig. 1, the low power consumption data acquisition system for a tray of the present embodiment includes a gateway and a plurality of trays. The tray comprises a tray body, and a communication module, a control chip, a vibration sensor and an acceleration sensor which are arranged on the tray body.
The vibration sensor is used for sending a vibration signal to the control chip when detecting the vibration of the tray body.
The control chip is used for exiting the sleep mode after receiving the vibration signal; the control chip is also used for controlling the communication module to send a first heartbeat packet to the gateway after the gateway exits the sleep mode.
The gateway is pre-stored with a duration limit and used for randomly generating a first preset duration based on the duration limit after receiving the first heartbeat packet and sending the first preset duration to the communication module; the control chip is further used for controlling the communication module to send a first heartbeat packet to the gateway every other first preset time after the first preset time is obtained from the communication module. The duration is limited to 1-4 minutes. In this embodiment, the communication module is a LoRa wireless module; the gateway is a LoRa gateway.
The gateway is also used for distributing an occupation time period for each tray; and sending the occupation period information to the communication module. The control chip is also used for awakening the acceleration sensor after exiting the sleep mode and acquiring acceleration data from the acceleration sensor; and judging whether the acceleration data is greater than a threshold value, if so, sending the acceleration data greater than the threshold value to the gateway through the communication module by the control chip in the belonged occupied time period. And after receiving the acceleration data, the gateway is also used for sending a confirmation character to the corresponding communication module. And if the communication module does not receive the confirmation character after the preset waiting time, retransmitting the acceleration data.
The control chip is also used for starting timing after the vibration sensor stops sending the vibration signal, and when the timing reaches a second preset duration, the control chip is also used for sending a second heartbeat packet to the gateway through the communication module; the control chip is also used for controlling the acceleration sensor and the control chip to enter a sleep mode after the second heartbeat packet is sent; the second preset duration is greater than the first preset duration. The second predetermined period of time is 5-10 minutes, in this example 5 minutes.
The gateway is used for starting timing after receiving the first heartbeat packet, when the timing exceeds a first preset time length, a new first heartbeat packet is still not received, and a second heartbeat packet is not received during the timing period, and the gateway marks the tray corresponding to the first heartbeat packet as a stolen tray.
Example two
As shown in fig. 2, the difference between the first embodiment and the second embodiment is that the tray body in the present embodiment includes a rectangular tray surface, three parallel supporting bases 1 are disposed at the bottom of the tray surface, and a conveying channel 2 is formed between adjacent supporting bases 1.
The tray body also comprises a resistance block 5, a telescopic cylinder 4, an electromagnetic valve, a ventilation branch pipe 6 and a ventilation main pipe.
As shown in fig. 3, a plurality of mounting holes 3 are further formed in the carrying channel 2, the telescopic cylinder 4 is vertically fixed in the mounting holes 3, and the resistance block 5 is fixed on the moving end of the telescopic cylinder 4. The surface of the resistance block 5 far away from the telescopic cylinder 4 is adhered with a rubber layer.
The number of the branch vent pipes 6 is the same as the number of the mounting holes 3. One end of the branch ventilation pipe 6 is connected with the air inlet of the telescopic cylinder 4, and the other end of the branch ventilation pipe 6 is connected with one end of the main ventilation pipe. The electromagnetic valve is fixed on the other end of the vent main pipe. The electromagnetic valve is electrically connected with the control chip, and the control chip is used for controlling the opening and closing of the electromagnetic valve. The solenoid valve is in a closed state by default. The initial position of the resistance block 5 is positioned outside the mounting hole 3, and after the gas in the telescopic cylinder 4 is exhausted, the resistance block 5 can retract into the mounting hole 3.
The tray still includes motion sensor, a plurality of weight sensor and a plurality of pressure sensor, and weight sensor installs on the quotation, and in this embodiment, weight sensor's quantity is five, is the cross, installs respectively in the intermediate position of quotation, front side, rear side, left side and right side. The pressure sensors are installed in the conveying channels 2, and in the embodiment, at least one pressure sensor is installed at each of two ends of each conveying channel 2.
The weight sensor and the pressure sensor are in signal connection with the control chip.
The control chip is also used for awakening the motion sensor, the weight sensor and the pressure sensor after exiting the sleep mode, acquiring weight information acquired by the weight sensor, calculating the gravity center of the goods based on the weight information, and generating a recommended carrying direction based on the gravity center of the goods. The communication module is used for sending the recommended carrying direction to the gateway.
Still include fork truck in this embodiment, fork truck includes transport fork and control end, and the control end is used for obtaining recommended transport direction and showing from the gateway. In this embodiment, the control end is provided with a display screen, and information is displayed through the display screen.
The control chip is also used for acquiring pressure data from the pressure sensor and judging whether the pallet is carried by the forklift currently or not based on the pressure data. If the forklift is used for carrying, the control chip also judges whether the carrying fork is fully inserted into the carrying channel 2 or not based on the pressure data, and if the carrying fork is not fully inserted into the carrying channel 2, the control chip sends position error information to the gateway through the communication module; and the control terminal is used for acquiring and displaying the position error information from the gateway.
The control chip is also used for acquiring acceleration data from the acceleration sensor during carrying, acquiring inclination angle data from the motion sensor, judging whether the current tray is inclined or not based on the inclination angle data, judging whether the inclination direction is the direction far away from the forklift or not if the current tray is inclined, and judging whether the acceleration of the current tray in the vertical direction is smaller than or equal to controllable acceleration or not based on the acceleration data if the current tray is inclined, or judging whether the acceleration of the current tray in the vertical direction is smaller than or equal to the controllable acceleration or not based on the acceleration data if the current; and the control chip sends reloading information to the gateway through the communication module. The control end is also used for acquiring reloading information from the gateway and displaying the reloading information
When the acceleration of the vertical direction of the current tray is larger than the controllable acceleration, the control chip is also used for controlling the electromagnetic valve to be opened, and the abandoned cargo information is sent to the gateway through the communication module. The control end is also used for acquiring the abandoned cargo information from the gateway and displaying the abandoned cargo information.
The existing tray is mostly made of plastic materials, and the surface is smooth. Moreover, the carrying fork is easy to wear during long-term carrying, the surface is smooth, the friction force between the carrying fork and the pallet is low, and the pallet is easy to slide during carrying goods, so that the safety is affected. In this implementation, when the transport fork stretched into transport passageway 2 and lifted up the tray, can extrude resistance piece 5, resistance piece 5 can be compressed to flush with transport passageway 2's surface, and the cylinder in the telescopic cylinder 4 can produce decurrent pressure to resistance piece 5 simultaneously, makes resistance piece 5 paste tight transport fork, and the rubber layer on resistance piece 5 surface fully contacts with the transport fork, can strengthen the frictional force between transport fork and the tray on the whole. Moreover, only when the transport fork is inserted into the transport passage 2 to lift the pallet, the force between the resistance block 5 and the transport fork becomes large, and when the transport fork is inserted into the transport passage 2, the pressure between the resistance block 5 and the transport fork is small, the friction force is also small, and the abrasion of the rubber layer on the resistance block 5 can be reduced.
Before the pallet is transported, the gravity center of the pallet is calculated based on the weight information, then the recommended transporting direction is generated based on the gravity center of the pallet, and after the pallet is known by a worker operating the forklift, the pallet and the pallet can be transported from the recommended transporting direction. For example, the center of gravity of goods is in the left side of tray, and the transport direction of recommendation this moment is the left side of tray, and in staff's operation fork truck stretched into transport passageway 2 with the transport fork from the left side of tray, the transport like this, can let the center of gravity of goods more be close to fork truck, avoided leading to the fork truck perk because the center of gravity of goods keeps away from fork truck and the goods appear inclining in resulting in handling poor stability even.
If the carrying fork is not fully inserted into the carrying channel 2, the stability is poor in the carrying process, even the gravity center of the goods is too far away from the forklift, the goods incline, and the forklift tilts and the like. In this embodiment, after the staff sees position error message, can in time adjust the position of transport fork.
When the goods of fork truck transport is overweight, when fork truck lifted the goods moreover, the goods can incline to the direction of keeping away from fork truck, lead to fork truck to keep away from the afterbody perk of goods, whole fork truck topples even, endangers staff's in the fork truck personal safety. In this embodiment, can judge that present tray takes place the slope based on inclination angle data, when taking place the slope, if the acceleration of the vertical direction of tray is less than or equal to controllable acceleration, it is slower to show that the speed that the goods appears the slope on the tray, and the staff has the time to deal with in addition, and at this moment, through sending reload information, be convenient for let the staff know the condition, operation fork truck falls the goods in order to avoid appearing the danger of toppling. Compared with the fact that workers observe the problems by experience, the problems can be found earlier by adopting the acceleration sensor and the motion sensor, and more processing time is reserved for the workers.
When the acceleration of the vertical direction of the tray is larger than the controllable acceleration, the goods are indicated to be quickly inclined and cannot be remedied, and the safety of operators should be guaranteed preferentially at the moment. Therefore, the electromagnetic valve is opened, gas in the telescopic cylinder 4 is released, the pressure of the telescopic cylinder 4 on the resistance block 5 is reduced, the friction force between the resistance block 5 and the carrying fork is reduced, the resistance of the carrying fork and the tray is reduced on the whole, the tray with the goods slides off the carrying fork more easily, and after the tray with the goods slides off the carrying fork, the forklift can be kept, the overturning of the forklift is avoided, and the safety of workers in the forklift is guaranteed.
The above are merely examples of the present invention, and the present invention is not limited to the field related to this embodiment, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art can know all the common technical knowledge in the technical field before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the scheme, and some typical known structures or known methods should not become barriers to the implementation of the present invention by those skilled in the art in light of the teaching provided in the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. The low-power-consumption data acquisition system for the tray comprises a gateway and a plurality of trays, wherein each tray comprises a tray body, and a communication module and a control chip which are arranged on the tray body;
the tray is characterized by also comprising a vibration sensor arranged on the tray body;
the vibration sensor is used for sending a vibration signal to the control chip when detecting the vibration of the tray body;
the control chip is used for exiting the sleep mode after receiving the vibration signal; the control chip is also used for controlling the communication module to send a first heartbeat packet to the gateway after exiting the sleep mode;
the gateway is used for randomly generating a first preset time length after receiving the first heartbeat packet and sending the first preset time length to the communication module; the control chip is further used for controlling the communication module to send a first heartbeat packet to the gateway every other first preset time after the first preset time is obtained from the communication module.
2. The low power consumption data collection system for pallets of claim 1, wherein: the gateway is pre-stored with a duration limit, and the gateway randomly generates a first preset duration based on the duration limit.
3. The low power consumption data collection system for pallets of claim 2, wherein: the gateway is further configured to allocate an occupation time period for each tray; sending the occupied time period information to a communication module;
the tray also comprises an acceleration sensor arranged on the tray body, and the control chip is also used for awakening the acceleration sensor after exiting the sleep mode and acquiring acceleration data from the acceleration sensor; and judging whether the acceleration data is greater than a threshold value, if so, sending the acceleration data greater than the threshold value to the gateway through the communication module by the control chip in the belonged occupied time period.
4. A low power consumption data collection system for pallets as claimed in claim 3, wherein: and after receiving the acceleration data, the gateway is also used for sending a confirmation character to the corresponding communication module.
5. The low power consumption data collection system for pallets of claim 4, wherein: the communication module is a LoRa wireless module.
6. The low power consumption data collection system for pallets of claim 5, wherein: the duration is limited to 1-4 minutes.
7. The low power consumption data collection system for pallets of claim 6, wherein: the control chip is also used for starting timing after the vibration sensor stops sending the vibration signal, and when the timing reaches a second preset duration, the control chip is also used for sending a second heartbeat packet to the gateway through the communication module; the control chip is also used for entering a sleep mode after the second heartbeat packet is sent; the second preset time length is longer than the first preset time length;
the gateway is used for starting timing after receiving the first heartbeat packet, when the timing exceeds a first preset time length, a new first heartbeat packet is still not received, and a second heartbeat packet is not received during the timing period, and the gateway marks the tray corresponding to the first heartbeat packet as a stolen tray.
8. A low power consumption data collecting method for a pallet, characterized by using the low power consumption data collecting system for a pallet according to any one of claims 1 to 7.
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CN114238685A (en) * | 2022-02-24 | 2022-03-25 | 深圳维特智能科技有限公司 | Tray automatic statistical method and device based on ble router and computer equipment |
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