CN113507685A - Internet of things application system based on Bluetooth technology - Google Patents

Internet of things application system based on Bluetooth technology Download PDF

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CN113507685A
CN113507685A CN202110718943.8A CN202110718943A CN113507685A CN 113507685 A CN113507685 A CN 113507685A CN 202110718943 A CN202110718943 A CN 202110718943A CN 113507685 A CN113507685 A CN 113507685A
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vehicle
door body
goods
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internet
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CN113507685B (en
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杨尼卡
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Shenzhen Gaoli Gaoke Industrial Co ltd
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Shenzhen Gaoli Gaoke Industrial Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
    • G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0841—Registering performance data
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y40/00—IoT characterised by the purpose of the information processing
    • G16Y40/60—Positioning; Navigation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • 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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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

The invention provides an Internet of things application system based on a Bluetooth technology, which comprises the following components: the system comprises a vehicle-mounted terminal and an Internet of things platform; the vehicle-mounted terminal is in communication connection with the Internet of things platform; the vehicle-mounted terminal includes: the Bluetooth communication module is used for being in communication connection with a data acquisition terminal arranged on a vehicle and acquiring state data of the vehicle acquired by the data acquisition terminal; the processor is electrically connected with the Bluetooth communication module, and the Internet of things communication module is electrically connected with the processor and is used for being in communication connection with the Internet of things platform; the processor acquires the state data of the vehicle acquired by the data acquisition terminal through the Bluetooth communication module and sends the state data to the Internet of things platform through the Internet of things communication module. The Internet of things application system based on the Bluetooth technology realizes the acquisition of information of vehicles and personnel and realizes the remote determination of the specific conditions of goods and personnel of the vehicles in transportation.

Description

Internet of things application system based on Bluetooth technology
Technical Field
The invention relates to the technical field of Internet of things, in particular to an Internet of things application system based on a Bluetooth technology.
Background
Currently, the Internet of Things (IoT) originated in the media field and is the third revolution of the information technology industry. The internet of things means that any object is connected with a network through information sensing equipment according to an agreed protocol, and the interconnection of the objects is realized.
The existing management of transport vehicles is only based on a GPS (global positioning system) or a Beidou positioning system, so that the positioning of the vehicle position is realized, and the acquisition of information of personnel or vehicle-mounted articles in the vehicle cannot be acquired.
Disclosure of Invention
One of the purposes of the invention is to provide an internet of things application system based on a Bluetooth technology, which realizes the acquisition of information of vehicles and personnel and the remote determination of the specific conditions of goods and personnel of the vehicles in transportation.
The embodiment of the invention provides an Internet of things application system based on a Bluetooth technology, which comprises the following components: the system comprises a vehicle-mounted terminal and an Internet of things platform; the vehicle-mounted terminal is in communication connection with the Internet of things platform;
the vehicle-mounted terminal includes:
the Bluetooth communication module is used for being in communication connection with a data acquisition terminal arranged on a vehicle and acquiring state data of the vehicle acquired by the data acquisition terminal;
a processor electrically connected with the Bluetooth communication module,
the Internet of things communication module is electrically connected with the processor and is used for being in communication connection with the Internet of things platform;
the processor acquires the state data of the vehicle acquired by the data acquisition terminal through the Bluetooth communication module and sends the state data to the Internet of things platform through the Internet of things communication module.
Preferably, the data acquisition terminal includes: one or more of an OBD data acquisition terminal, a temperature data acquisition terminal, a humidity data acquisition terminal, an RFID card reader, a positioning data acquisition terminal and a first image acquisition terminal are combined;
the OBD data acquisition terminal is used for accessing an OBD interface of the vehicle to acquire vehicle data in a traveling computer of the vehicle;
the temperature data acquisition terminal is used for acquiring temperature data in a vehicle compartment;
the humidity data acquisition terminal is used for acquiring humidity data in a vehicle compartment;
the RFID card reader is used for acquiring RFID label information data of goods in a vehicle compartment;
the positioning data acquisition terminal is used for being connected with the vehicle-mounted positioning equipment and acquiring positioning data of the vehicle-mounted positioning equipment;
the system comprises at least one first image acquisition terminal, a first image acquisition terminal and a second image acquisition terminal, wherein the first image acquisition terminal is arranged in a cab and/or a vehicle compartment of a vehicle and is used for acquiring first image data in the cab and/or the vehicle compartment.
Preferably, the internet of things application system based on the bluetooth technology further includes:
the door lock controller is electrically connected with the vehicle-mounted terminal and is used for controlling the opening and closing of a door lock of a door of a vehicle compartment;
the door body state detection module is electrically connected with the vehicle-mounted terminal and is used for detecting the state of a door body;
the door body control module is electrically connected with the vehicle-mounted terminal and is used for controlling the opening of the door body;
the first reminding module is arranged in the cab and electrically connected with the vehicle-mounted terminal;
the vehicle-mounted terminal performs the following operations:
analyzing vehicle data acquired through an OBD data acquisition terminal;
when the driver is determined to start the vehicle, detecting the state of the door body through the door body state detection module; when the detected state is on, the driver is reminded through the first reminding module; when the detected state is closed, the alarm is not given;
when the driver is determined to stop the vehicle, reading the identity information of the RFID identification card of the worker through the RFID card reader and positioning the position of the RFID identification card;
when the positioned position is located in a preset area behind the door body, the door lock controller and the door body control module are controlled to act, so that the door body is opened;
tracking the position of the RFID identification card, and determining whether the work of a worker is finished or not based on the tracked position information; when the work of the staff is finished, the door lock controller and the door body control module are controlled to act, so that the door body is closed.
Preferably, the internet of things application system based on the bluetooth technology further includes:
the second image acquisition terminal is arranged at the position, above the door body, of the vehicle compartment, is electrically connected with the vehicle-mounted terminal and is used for shooting second image data of the area in front of the door body;
the vehicle-mounted terminal performs the following operations:
analyzing second image data shot by a second image acquisition terminal, and determining a first number of people in the area in front of the door body;
analyzing the identity information passing through the RFID card reader to determine a second number of the staff;
when the first number is equal to the second number and the positioning position of the worker is in a preset area, controlling the door lock controller and the door body control module to act to open the door body; otherwise, it is not opened.
Preferably, the internet of things application system based on the bluetooth technology, the vehicle-mounted terminal tracks the position of the RFID identification card, and determines whether the work of the worker is finished based on the tracked position information, specifically including the following steps:
when goods are unloaded from a vehicle, a first area located at a goods unloading position of a door body and a preset second area for unloading and stacking the goods are obtained;
tracking and sampling the position of the RFID identification card to obtain a plurality of sampling positions;
determining a difference value between the sum of a first distance from the sampling position to a first central point of the first area and a second distance from the sampling position to a second central point of the second area and a third distance from the first central point to the second central point, and determining that the work of a worker is finished when the difference value is out of a preset threshold range;
when the difference value is within a preset threshold value range, determining a plurality of action vectors based on two adjacent sampling positions; the action vector points to the next sampling position by taking the previous sampling position as a starting point;
determining a plurality of decision vectors based on the first region and the second region; the vector is judged to point to a position point in the second area by taking the position point in the first area as a starting point or point to the position point in the first area by taking the position point in the second area as a starting point;
screening the action vectors based on the judgment vectors, and determining the action vectors which accord with the movement trend between the first area and the second area;
acquiring whether the ratio of the number of the action vectors conforming to the movement trend between the first area and the second area to the total number of the action vectors reaches a preset first ratio threshold value or not; when the working condition is smaller than the first ratio threshold value, determining that the work of the worker is finished;
and/or the presence of a gas in the gas,
when the ratio of the zero vector in the sampling vector is larger than a preset second ratio threshold value, determining that the work of the worker is finished;
the method for screening the action vector based on the judgment vector to determine the action vector conforming to the movement trend between the first area and the second area comprises the following steps:
determining the included angle between the action vector and each judgment vector based on a vector cosine included angle formula; and when the included angle is smaller than or equal to a preset included angle threshold value, determining that the action vector accords with the movement trend between the first area and the second area.
Preferably, the internet of things application system based on the bluetooth technology further includes:
the pressure sensor array is arranged on the inner side surface of a door body of a vehicle compartment and used for detecting the pressure applied to the inner side surface of the door body;
the second reminding module is arranged on the outer side surface of a door body of the vehicle compartment and is electrically connected with the vehicle-mounted terminal;
the vehicle-mounted terminal performs the following operations:
acquiring first image data in a vehicle compartment through a first image acquisition terminal;
analyzing the first image data, and determining the goods stacking condition on the inner side of the door body;
when the extreme edge of the goods does not lean against the inner side surface of the door body, outputting first reminding information of the normal state of the goods in the carriage through a second reminding module;
when the edge of the goods depends on the inner side surface of the door body, the pressure applied to the inner side surface of the door body is detected through the pressure sensor array;
predicting the state of the goods when the door body is opened based on the first image data and the pressure applied to the inner side surface of the door body detected by the pressure sensor array;
determining whether goods have risks of dumping or not after the door body is opened and determining a coping strategy when the goods have risks of dumping according to the states of the goods;
and outputting second reminding information representing that the goods in the vehicle compartment have the dumping risk through a second reminding module and outputting a coping strategy.
Preferably, the first image data is analyzed, and the goods stacking condition on the inner side of the door body is determined; the method comprises the following steps:
acquiring a preset three-dimensional space model diagram of the carriage;
determining a cargo model map based on the first image data;
mapping the cargo model map to a three-dimensional space model map of the carriage, and determining the position relation between the cargo model map and the inner side of a door body in the three-dimensional space model map of the carriage;
inquiring a preset goods stacking judgment table to determine the goods stacking condition based on the goods model diagram and the position relation; and the goods model diagram and the position relation in the goods stacking judgment table correspond to the goods stacking conditions one by one.
Preferably, the method for predicting the state of the goods when the door body is opened based on the first image data and the pressure applied to the inner side surface of the door body detected by the pressure sensor array comprises the following steps:
constructing a prediction vector based on the first image data and the pressure on the inner side surface of the door body detected by the pressure sensor array;
acquiring a preset prediction library, wherein the prediction library comprises state vectors which are in one-to-one correspondence with the states of the cargos;
calculating the similarity between the prediction vector and each state vector in the prediction library, wherein the similarity calculation formula is as follows:
Figure BDA0003136205500000051
wherein M isjSimilarity between the prediction vector and the jth state vector in the prediction base is obtained; x is the number ofiIs the ith parameter value of the prediction vector; y isi,jThe ith parameter value of the jth state vector in the prediction library; n is the dimension of the prediction vector or the dimension of the state vector;
acquiring the state of the goods corresponding to the state vector with the maximum similarity as the predicted state of the goods when the door body is opened;
wherein the state of the cargo comprises: one or more items of pouring probability, impact force during pouring and pouring direction are combined.
Preferably, the determining, according to the state of the goods, whether the goods have a risk of toppling after the door body is opened, and determining the coping strategy when the goods have the risk of toppling, includes:
when the falling probability is larger than a preset probability threshold value, determining that the goods have the dumping risk;
inquiring a preset coping strategy table based on the impulsive force and the toppling direction during toppling to obtain coping strategies; the impulse force and the toppling direction during toppling in the coping strategy table correspond to the coping strategies one by one.
Preferably, the internet of things application system based on the bluetooth technology further includes:
a first RFID tag disposed at a location for unloading of the vehicle transport for identifying a location of a second area for unloading; the first RFID label stores parameter information of a second area;
the second RFID tag is arranged at a loading position of vehicle transportation and used for identifying the position of a third area for loading, and parameter information of the third area is stored in the second RFID tag;
the at least one third RFID tag is arranged at a preset position point in the vehicle transportation process and used for identifying the position point in the vehicle transportation process, and parameter information of the position point in the vehicle transportation process is stored in the third RFID tag;
the vehicle-mounted terminal performs the following operations:
when the first RFID label or the second RFID label is read through the RFID card reader, the door lock controller and the door body control module are used for controlling the opening or closing of the door body of the vehicle compartment;
when parameter information in the first RFID label, the second RFID label or the third RFID label is read, the positioning data acquired by the positioning data acquisition terminal is corrected based on the parameter information, and correction data is sent to the vehicle-mounted positioning equipment.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of an internet of things application system based on a bluetooth technology in an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment of the invention provides an internet of things application system based on a Bluetooth technology, as shown in fig. 1, comprising: the system comprises a vehicle-mounted terminal 1 and an Internet of things platform 2; the vehicle-mounted terminal 1 is in communication connection with the Internet of things platform 2;
the in-vehicle terminal 1 includes:
the Bluetooth communication module 13 is used for being in communication connection with the data acquisition terminal 3 arranged on the vehicle and acquiring the state data of the vehicle acquired by the data acquisition terminal 3;
a processor 12 electrically connected with the Bluetooth communication module 13,
the internet of things communication module 11 is electrically connected with the processor 12 and is used for being in communication connection with the internet of things platform 2;
the processor 12 acquires the state data of the vehicle acquired by the data acquisition terminal 3 through the bluetooth communication module 13, and transmits the state data to the internet of things platform 2 through the internet of things communication module 11.
The working principle and the beneficial effects of the technical scheme are as follows:
the method comprises the steps that a vehicle-mounted terminal 1 is arranged on a vehicle, the vehicle-mounted terminal 1 is communicated with equipment on the vehicle based on a Bluetooth communication module 13, and data collected by each data collection terminal 3 arranged on the vehicle are obtained; the vehicle-mounted terminal 1 communicates with the internet of things platform 2 based on the internet of things communication module 11, data collected from each data collection terminal 3 are sent to the internet of things platform 2, a user can obtain real-time state data of a vehicle in real time only by logging in the internet of things platform 2, and the state of the vehicle is determined through the real-time state data; according to the diversified arrangement of the data acquisition terminal 3, not only the positioning information of the vehicle can be determined, but also the data of the vehicle can be determined, such as the temperature and humidity in a compartment when frozen food is conveyed; the state of cargo in the compartment, images, etc.; the system realizes the comprehensive control of various states in the vehicle transportation process so as to realize the comprehensive management of vehicle transportation.
In one embodiment, the data acquisition terminal 3 includes: one or more of an OBD data acquisition terminal, a temperature data acquisition terminal, a humidity data acquisition terminal, an RFID card reader, a positioning data acquisition terminal and a first image acquisition terminal are combined;
the OBD data acquisition terminal is used for accessing an OBD interface of the vehicle to acquire vehicle data in a traveling computer of the vehicle;
the temperature data acquisition terminal is used for acquiring temperature data in a vehicle compartment;
the humidity data acquisition terminal is used for acquiring humidity data in a vehicle compartment;
the RFID card reader is used for acquiring RFID label information data of goods in a vehicle compartment;
the positioning data acquisition terminal is used for being connected with the vehicle-mounted positioning equipment and acquiring positioning data of the vehicle-mounted positioning equipment;
the system comprises at least one first image acquisition terminal, a first image acquisition terminal and a second image acquisition terminal, wherein the first image acquisition terminal is arranged in a cab and/or a vehicle compartment of a vehicle and is used for acquiring first image data in the cab and/or the vehicle compartment.
The working principle and the beneficial effects of the technical scheme are as follows:
based on the vehicle data in the driving computer of OBD data acquisition terminal collection vehicle, vehicle data includes: vehicle speed, fuel tank volume, etc.; collecting temperature through a temperature data collecting terminal; acquiring humidity through a humidity data acquisition terminal; the RFID card reader mainly reads an RFID identity card worn by a driver and an RFID label on goods and determines the state of the driver and the state of the goods. The positioning data acquisition terminal acquires positioning data and determines the position of the vehicle. The first image acquisition terminals can be a plurality of and are respectively arranged on images in the cab and images in the carriage; and real-time video monitoring is realized.
In one embodiment, the internet of things application system based on bluetooth technology further includes:
the door lock controller is electrically connected with the vehicle-mounted terminal 1 and is used for controlling the opening and closing of a door lock of a door of a vehicle compartment;
the door body state detection module is electrically connected with the vehicle-mounted terminal 1 and is used for detecting the state of a door body;
the door body control module is electrically connected with the vehicle-mounted terminal 1 and is used for controlling the opening of a door body;
the first reminding module is arranged in the cab and electrically connected with the vehicle-mounted terminal 1;
the in-vehicle terminal 1 performs the following operations:
analyzing the vehicle data acquired by the OBD data acquisition terminal 3;
when the driver is determined to start the vehicle, detecting the state of the door body through the door body state detection module; when the detected state is on, the driver is reminded through the first reminding module; when the detected state is closed, the alarm is not given;
when the driver is determined to stop the vehicle, reading the identity information of the RFID identification card of the worker through the RFID card reader and positioning the position of the RFID identification card;
when the positioned position is located in a preset area behind the door body, the door lock controller and the door body control module are controlled to act, so that the door body is opened;
tracking the position of the RFID identification card, and determining whether the work of a worker is finished or not based on the tracked position information; when the work of the staff is finished, the door lock controller and the door body control module are controlled to act, so that the door body is closed.
The working principle and the beneficial effects of the technical scheme are as follows:
detecting the state of a door body through a door body state detection module, mainly detecting whether the door body is opened or not, and parameters such as opening angle and speed; and the door body control module is used for controlling the opening speed and the closing speed of the door body. The door lock controller controls the opening and closing of the door lock; and the opening and closing of the carriage door body are realized by matching with the door body control module. The first reminding module is used for sending out a reminding when a driver starts a vehicle when a door body is not closed; so as to avoid the injury of workers caused by the starting of the vehicle in the loading or unloading process. In addition, based on the RFID positioning technology, the position of the worker is determined through an RFID card reader and an RFID identification card of the worker, and when the worker is in place in a preset area behind the vehicle, the vehicle is ready to be loaded or unloaded; just control the door body and open this moment, avoided the vehicle to mention and opened and remove to get on the goods or unload the position after the door, because of the risk that the accident caused personnel's touching. Whether the work of a worker is finished or not is determined through the position tracking analysis of the RFID identification card, and when the work is finished, the door body is controlled to be closed, so that intelligent closing is realized; and a driver is not required to determine whether the work is finished or not, so that the intelligence is improved.
In one embodiment, the internet of things application system based on bluetooth technology further includes:
the second image acquisition terminal is arranged at a position, above the door body, of the vehicle compartment, is electrically connected with the vehicle-mounted terminal 1 and is used for shooting second image data of an area in front of the door body;
the in-vehicle terminal 1 performs the following operations:
analyzing second image data shot by a second image acquisition terminal, and determining a first number of people in the area in front of the door body;
analyzing the identity information passing through the RFID card reader to determine a second number of the staff;
when the first number is equal to the second number and the positioning position of the worker is in a preset area, controlling the door lock controller and the door body control module to act to open the door body; otherwise, it is not opened.
The working principle and the beneficial effects of the technical scheme are as follows:
the second image acquisition terminal shoots the image of the staff with the door body in place in the preset area behind the door body, and the identity of the staff is verified again on the basis of the card reading identification of the RFID card reader, so that the identity of the staff is controlled during goods loading or unloading.
In one embodiment, in an internet of things application system based on a bluetooth technology, the vehicle-mounted terminal 1 tracks the position of the RFID identification card, and determines whether the work of a worker is finished based on the tracked position information, specifically including the following steps:
when goods are unloaded from a vehicle, a first area located at a goods unloading position of a door body and a preset second area for unloading and stacking the goods are obtained;
tracking and sampling the position of the RFID identification card to obtain a plurality of sampling positions;
determining a difference value between the sum of a first distance from the sampling position to a first central point of the first area and a second distance from the sampling position to a second central point of the second area and a third distance from the first central point to the second central point, and determining that the work of a worker is finished when the difference value is out of a preset threshold range;
when the difference value is within a preset threshold value range, determining a plurality of action vectors based on two adjacent sampling positions; the action vector points to the next sampling position by taking the previous sampling position as a starting point;
determining a plurality of decision vectors based on the first region and the second region; the vector is judged to point to a position point in the second area by taking the position point in the first area as a starting point or point to the position point in the first area by taking the position point in the second area as a starting point;
screening the action vectors based on the judgment vectors, and determining the action vectors which accord with the movement trend between the first area and the second area;
acquiring whether the ratio of the number of the action vectors conforming to the movement trend between the first area and the second area to the total number of the action vectors reaches a preset first ratio threshold value or not; when the working condition is smaller than the first ratio threshold value, determining that the work of the worker is finished;
and/or the presence of a gas in the gas,
when the ratio of the zero vector in the sampling vector is larger than a preset second ratio threshold value, determining that the work of the worker is finished;
the method for screening the action vector based on the judgment vector to determine the action vector conforming to the movement trend between the first area and the second area comprises the following steps:
determining the included angle between the action vector and each judgment vector based on a vector cosine included angle formula; and when the included angle is smaller than or equal to a preset included angle threshold value, determining that the action vector accords with the movement trend between the first area and the second area.
The working principle and the beneficial effects of the technical scheme are as follows:
during unloading, a first area of a unloading position of the door body, a second area of a goods unloading stacking position and a tracking sampling position are adopted to analyze the movement trend of the staff, and when the movement trend of the staff is analyzed to move to and fro between the first area and the second area, the staff can be considered to be not finished; when not, the job ends. When the trace is sampled, sampling can be performed at each preset time point within a preset time period, and each sampling position within the preset time period is comprehensively analyzed. The sampling can also be done on the basis of fluctuations in the distance from the vehicle cabin, i.e. the worker moves far from the cabin and one of the segments when moving to the farthest end. When the sampling vector is a zero vector, it indicates that the user is not moving in place. Furthermore, the method can also be applied to the loading process, namely when the vehicle loads, the comprehensive analysis is carried out through the loading area, the goods stacking position and the position of the staff, and whether the work is finished or not is analyzed.
In one embodiment, the internet of things application system based on bluetooth technology further includes:
the pressure sensor array is arranged on the inner side surface of a door body of a vehicle compartment and used for detecting the pressure applied to the inner side surface of the door body;
the second reminding module is arranged on the outer side surface of a door body of a vehicle compartment and is electrically connected with the vehicle-mounted terminal 1;
the in-vehicle terminal 1 performs the following operations:
acquiring first image data in a vehicle compartment through a first image acquisition terminal;
analyzing the first image data, and determining the goods stacking condition on the inner side of the door body;
when the extreme edge of the goods does not lean against the inner side surface of the door body, outputting first reminding information of the normal state of the goods in the carriage through a second reminding module;
when the edge of the goods depends on the inner side surface of the door body, the pressure applied to the inner side surface of the door body is detected through the pressure sensor array;
predicting the state of the goods when the door body is opened based on the first image data and the pressure applied to the inner side surface of the door body detected by the pressure sensor array;
determining whether goods have risks of dumping or not after the door body is opened and determining a coping strategy when the goods have risks of dumping according to the states of the goods;
and outputting second reminding information representing that the goods in the vehicle compartment have the dumping risk through a second reminding module and outputting a coping strategy.
The working principle and the beneficial effects of the technical scheme are as follows:
comprehensive analysis is carried out through the first image acquisition terminal and the pressure sensor array, when goods lean against the inner side surface of the door body, the state is a dangerous state, and the goods are prevented from falling by the door body; when the door body is opened, goods topple over or accidentally injure workers nearby the door body. Therefore, through the second reminding module, the staff can timely know the risk and give a coping strategy aiming at the risk second reminding module, and the staff can timely cope with the reasonable coping strategy. The pressure sensor array is a plurality of pressure sensors arranged in an array.
In one embodiment, the first image data is analyzed, and the goods stacking condition on the inner side of the door body is determined; the method comprises the following steps:
acquiring a preset three-dimensional space model diagram of the carriage;
determining a cargo model map based on the first image data;
mapping the cargo model map to a three-dimensional space model map of the carriage, and determining the position relation between the cargo model map and the inner side of a door body in the three-dimensional space model map of the carriage;
inquiring a preset goods stacking judgment table to determine the goods stacking condition based on the goods model diagram and the position relation; and the goods model diagram and the position relation in the goods stacking judgment table correspond to the goods stacking conditions one by one.
The working principle and the beneficial effects of the technical scheme are as follows:
the method of three-dimensional space model construction is adopted to realize accurate determination of goods stacking conditions; the stacking condition of the goods in the carriage is not only the stacking of the goods but also whether the stacking of the goods is close to the inner side surface of the door body.
In one embodiment, the predicting the state of the cargo when the door body is opened based on the first image data and the pressure applied to the inner side surface of the door body detected by the pressure sensor array comprises:
constructing a prediction vector based on the first image data and the pressure on the inner side surface of the door body detected by the pressure sensor array;
acquiring a preset prediction library, wherein the prediction library comprises state vectors which are in one-to-one correspondence with the states of the cargos;
calculating the similarity between the prediction vector and each state vector in the prediction library, wherein the similarity calculation formula is as follows:
Figure BDA0003136205500000131
wherein M isjSimilarity between the prediction vector and the jth state vector in the prediction base is obtained; x is the number ofiIs the ith parameter value of the prediction vector; y isi,jThe ith parameter value of the jth state vector in the prediction library; n is the dimension of the prediction vector or the dimension of the state vector;
acquiring the state of the goods corresponding to the state vector with the maximum similarity as the predicted state of the goods when the door body is opened;
wherein the state of the cargo comprises: one or more items of pouring probability, impact force during pouring and pouring direction are combined.
The working principle and the beneficial effects of the technical scheme are as follows:
predicting the cargo state after opening the door based on a preset prediction library, and predicting the dumping probability, the impulsive force during dumping and the dumping direction; so as to realize the formulation of the corresponding strategy. The prediction library is obtained by comprehensively summarizing a large amount of experimental data.
In one embodiment, the determining of the coping strategy when determining whether the goods have the risk of toppling after the door body is opened and when the goods have the risk of toppling through the state of the goods comprises the following steps:
when the falling probability is larger than a preset probability threshold value, determining that the goods have the dumping risk;
inquiring a preset coping strategy table based on the impulsive force and the toppling direction during toppling to obtain coping strategies; the impulse force and the toppling direction during toppling in the coping strategy table correspond to the coping strategies one by one.
The working principle and the beneficial effects of the technical scheme are as follows:
corresponding coping strategies are determined through the coping strategy table, and the optimal coping strategy is rapidly determined; for example: when the predicted impact force is small, a worker can be used for positioning, the door body opens a gap, and the lifting tool is stretched into the gap by the worker to prevent goods from toppling. When the predicted impulsive force is large, special hydraulic pressure is needed to be adopted to abut against the device for operation, meanwhile, the situation that personnel stand in a dumping area is avoided, and the risk of injury of the personnel is prevented.
In one embodiment, the internet of things application system based on bluetooth technology further includes:
a first RFID tag disposed at a location for unloading of the vehicle transport for identifying a location of a second area for unloading; the first RFID label stores parameter information of a second area;
the second RFID tag is arranged at a loading position of vehicle transportation and used for identifying the position of a third area for loading, and parameter information of the third area is stored in the second RFID tag;
the at least one third RFID tag is arranged at a preset position point in the vehicle transportation process and used for identifying the position point in the vehicle transportation process, and parameter information of the position point in the vehicle transportation process is stored in the third RFID tag;
the in-vehicle terminal 1 performs the following operations:
when the first RFID label or the second RFID label is read through the RFID card reader, the door lock controller and the door body control module are used for controlling the opening or closing of the door body of the vehicle compartment;
when parameter information in the first RFID label, the second RFID label or the third RFID label is read, the positioning data acquired by the positioning data acquisition terminal is corrected based on the parameter information, and correction data is sent to the vehicle-mounted positioning equipment.
The working principle and the beneficial effects of the technical scheme are as follows:
the first RFID label, the second RFID label and the third RFID label are arranged, so that the positions of loading and unloading of the vehicle and the preset position points in the process are determined; the supplementary correction of the positioning data is realized, and the accuracy of the vehicle position determination is improved; and prevent that the vehicle-mounted positioning equipment trouble from causing the positioning error, influence thing networking platform 2 to the management and control of vehicle.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. An Internet of things application system based on Bluetooth technology is characterized by comprising: the system comprises a vehicle-mounted terminal and an Internet of things platform; the vehicle-mounted terminal is in communication connection with the Internet of things platform;
the vehicle-mounted terminal includes:
the Bluetooth communication module is used for being in communication connection with a data acquisition terminal arranged on a vehicle and acquiring state data of the vehicle acquired by the data acquisition terminal;
a processor electrically connected with the Bluetooth communication module,
the Internet of things communication module is electrically connected with the processor and is used for being in communication connection with the Internet of things platform;
the processor acquires the state data of the vehicle acquired by the data acquisition terminal through the Bluetooth communication module, and transmits the state data to the Internet of things platform through the Internet of things communication module.
2. The internet of things application system based on bluetooth technology as claimed in claim 1, wherein the data acquisition terminal comprises: one or more of an OBD data acquisition terminal, a temperature data acquisition terminal, a humidity data acquisition terminal, an RFID card reader, a positioning data acquisition terminal and a first image acquisition terminal are combined;
the OBD data acquisition terminal is used for accessing an OBD interface of a vehicle to acquire vehicle data in a traveling computer of the vehicle;
the temperature data acquisition terminal is used for acquiring temperature data in a vehicle compartment;
the humidity data acquisition terminal is used for acquiring humidity data in a vehicle compartment;
the RFID card reader is used for acquiring RFID label information data of goods in a vehicle compartment;
the positioning data acquisition terminal is used for being connected with the vehicle-mounted positioning equipment and acquiring positioning data of the vehicle-mounted positioning equipment;
the first image acquisition terminal is arranged in a cab and/or a vehicle compartment of a vehicle and is used for acquiring first image data in the cab and/or the vehicle compartment.
3. The internet of things application system based on bluetooth technology as claimed in claim 2, further comprising:
the door lock controller is electrically connected with the vehicle-mounted terminal and is used for controlling the opening and closing of a door lock of a door of the vehicle compartment;
the door body state detection module is electrically connected with the vehicle-mounted terminal and is used for detecting the state of a door body;
the door body control module is electrically connected with the vehicle-mounted terminal and is used for controlling the opening of a door body;
the first reminding module is arranged in the cab and electrically connected with the vehicle-mounted terminal;
the vehicle-mounted terminal executes the following operations:
analyzing the vehicle data acquired by the OBD data acquisition terminal;
when the driver is determined to start the vehicle, detecting the state of the door body through the door body state detection module; when the detected state is on, the driver is reminded through the first reminding module; when the detected state is closed, the alarm is not given;
when the driver is determined to stop the vehicle, reading the identity information of the RFID identification card of the worker through the RFID card reader and positioning the position of the RFID identification card;
when the positioned position is located in a preset area behind the door body, the door lock controller and the door body control module are controlled to act, so that the door body is opened;
tracking the position of the RFID identification card, and determining whether the work of a worker is finished or not based on the tracked position information; when the work of the staff is finished, the door lock controller and the door body control module are controlled to act, so that the door body is closed.
4. The internet of things application system based on bluetooth technology as claimed in claim 3, further comprising:
the second image acquisition terminal is arranged at a position, above the door body, of the vehicle compartment, is electrically connected with the vehicle-mounted terminal, and is used for shooting second image data of an area in front of the door body;
the vehicle-mounted terminal executes the following operations:
analyzing the second image data shot by the second image acquisition terminal, and determining a first number of people in the area in front of the door body;
analyzing the identity information passing through the RFID card reader to determine a second number of workers;
when the first number is equal to the second number and the positioning position of the worker is in a preset area, controlling the door lock controller and the door body control module to act to open the door body; otherwise, it is not opened.
5. The internet of things application system based on the bluetooth technology as claimed in claim 3, wherein the vehicle-mounted terminal tracks the position of the RFID identification card, and determines whether the work of the worker is finished based on the tracked position information, specifically comprising the following steps:
when goods are unloaded from a vehicle, a first area located at a goods unloading position of the door body and a preset second area for unloading and stacking the goods are obtained;
tracking and sampling the position of the RFID identification card to obtain a plurality of sampling positions;
determining a difference value between the sum of a first distance from the sampling position to a first central point of the first area and a second distance from the sampling position to a second central point of the second area and a third distance from the first central point to the second central point, and determining that the work of the worker is finished when the difference value is out of a preset threshold range;
when the difference value is within a preset threshold value range, determining a plurality of action vectors based on two adjacent sampling positions; the action vector points to the next sampling position by taking the previous sampling position as a starting point;
determining a plurality of decision vectors based on the first region and the second region; the judgment vector points to a position point in the second area by taking a position point in the first area as a starting point or points to a position point in the first area by taking a position point in the second area as a starting point;
screening the action vector based on the judgment vector, and determining the action vector which accords with the movement trend between the first area and the second area;
acquiring whether the ratio of the number of the action vectors conforming to the movement trend between the first area and the second area to the total number of the action vectors reaches a preset first ratio threshold value or not; when the first occupation ratio is smaller than the first occupation ratio threshold, determining that the work of the worker is finished;
and/or the presence of a gas in the gas,
when the ratio of the zero vector in the sampling vector is larger than a preset second ratio threshold value, determining that the work of the worker is finished;
wherein, screening the action vector based on the judgment vector, and determining the action vector according with the motion trend between the first area and the second area comprises:
determining the included angle between the action vector and each judgment vector based on a vector cosine included angle formula; and when the included angle is smaller than or equal to a preset included angle threshold value, determining that the action vector accords with the movement trend between the first area and the second area.
6. The internet of things application system based on bluetooth technology as claimed in claim 2, further comprising:
the pressure sensor array is arranged on the inner side surface of a door body of the vehicle compartment and used for detecting the pressure applied to the inner side surface of the door body;
the second reminding module is arranged on the outer side surface of a door body of the vehicle compartment and is electrically connected with the vehicle-mounted terminal;
the vehicle-mounted terminal executes the following operations:
acquiring first image data in the vehicle compartment through the first image acquisition terminal;
analyzing the first image data, and determining the goods stacking condition on the inner side of the door body;
when the extreme edge of the goods does not lean against the inner side surface of the door body, outputting first reminding information that the goods in the carriage are in a normal state through the second reminding module;
when the edge of the goods depends on the inner side surface of the door body, detecting the pressure applied to the inner side surface of the door body through the pressure sensor array;
predicting the state of the goods when the door body is opened based on the first image data and the pressure on the inner side surface of the door body detected by the pressure sensor array;
determining whether the goods have risks of toppling or not after the door body is opened and determining a coping strategy when the goods have risks of toppling according to the states of the goods;
and outputting second reminding information representing that goods in the vehicle compartment have the dumping risk through the second reminding module and outputting the coping strategy.
7. The internet of things application system based on the Bluetooth technology as claimed in claim 6, wherein the first image data is analyzed to determine the goods stacking condition on the inner side of the door body; the method comprises the following steps:
acquiring a preset three-dimensional space model diagram of the carriage;
determining a cargo model map based on the first image data;
mapping the cargo model diagram to the three-dimensional space model diagram of the carriage, and determining the position relation between the cargo model diagram and the inner side of the door body in the three-dimensional space model diagram of the carriage;
inquiring a preset goods stacking judgment table to determine the goods stacking condition based on the goods model diagram and the position relation; the goods model diagram and the position relation in the goods stacking judgment table correspond to the goods stacking conditions one by one.
8. The internet of things application system based on the bluetooth technology as claimed in claim 6, wherein the predicting the state of the goods when the door body is opened based on the first image data and the pressure applied to the inner side surface of the door body detected by the pressure sensor array comprises:
constructing a prediction vector based on the first image data and the pressure on the inner side surface of the door body detected by the pressure sensor array;
acquiring a preset prediction library, wherein the prediction library comprises state vectors which are in one-to-one correspondence with the states of cargoes;
calculating the similarity between the prediction vector and each state vector in the prediction base, wherein the similarity calculation formula is as follows:
Figure FDA0003136205490000051
wherein M isjIs the similarity between the prediction vector and the jth of the state vectors in the prediction base; x is the number ofiIs the ith parameter value of the prediction vector; y isi,jThe ith parameter value of the jth state vector in the prediction library; n is the dimension of the prediction vector or the dimension of the state vector;
acquiring the state of the goods corresponding to the state vector with the maximum similarity as the predicted state of the goods when the door body is opened;
wherein the state of the cargo comprises: one or more items of pouring probability, impact force during pouring and pouring direction are combined.
9. The internet of things application system based on the Bluetooth technology as claimed in claim 6, wherein the determining whether the goods has a risk of toppling after the door body is opened and determining a coping strategy when the goods has the risk of toppling through the state of the goods comprises:
when the falling probability is larger than a preset probability threshold value, determining that the goods have a dumping risk;
inquiring a preset coping strategy table based on the impulsive force during pouring and the pouring direction to obtain the coping strategy; and the impulse force and the toppling direction during toppling in the corresponding strategy table correspond to the corresponding strategies one by one.
10. The internet of things application system based on bluetooth technology as claimed in claim 3, further comprising:
a first RFID tag disposed at a location for unloading of the vehicle transport for identifying a location of a second area for unloading; the first RFID label stores parameter information of the second area;
the second RFID tag is arranged at a loading position of vehicle transportation and used for identifying the position of a third area for loading, and parameter information of the third area is stored in the second RFID tag;
the system comprises at least one third RFID tag, a first RFID tag and a second RFID tag, wherein the third RFID tag is arranged at a preset position point in the transportation process of a vehicle and used for identifying the position point in the transportation process of the vehicle;
the vehicle-mounted terminal executes the following operations:
when the first RFID label or the second RFID label is read through the RFID card reader, the door body of the vehicle compartment is controlled to be opened or closed through the door lock controller and the door body control module;
when parameter information in the first RFID label, the second RFID label or the third RFID label is read, the positioning data acquired by the positioning data acquisition terminal is corrected based on the parameter information, and correction data is sent to the vehicle-mounted positioning equipment.
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