CN112007347A - Motion information acquisition system and method - Google Patents

Motion information acquisition system and method Download PDF

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Publication number
CN112007347A
CN112007347A CN201910472283.2A CN201910472283A CN112007347A CN 112007347 A CN112007347 A CN 112007347A CN 201910472283 A CN201910472283 A CN 201910472283A CN 112007347 A CN112007347 A CN 112007347A
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information
time
spatial position
position information
upper computer
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熊辉
姚平福
李浩浩
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Beijing Institute of Technology BIT
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Beijing Institute of Technology BIT
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    • 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
    • G06K17/0003—Automatic card files incorporating selecting, conveying and possibly reading and/or writing operations
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • 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
    • G06K17/0025—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 consisting of a wireless interrogation device in combination with a device for optically marking the record carrier
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/10—Positions
    • A63B2220/14—Geo-tagging, e.g. for correlating route or track location data with specific information related to that specific location
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/30—Speed

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The embodiment of the invention provides a motion information acquisition system and a method thereof, wherein the motion information acquisition system comprises: the system comprises an upper computer, one or more distributed positioning devices and a time synchronization server; the time synchronization server is connected with one or more distributed positioning devices and is used for sending time synchronization information to the one or more distributed positioning devices; one or more distributed positioning devices are connected with an upper computer, the distributed positioning devices are fixed on a monitored object, the distributed positioning devices are used for determining spatial position information and time information of the monitored object under a preset spatial coordinate, the spatial position information and the time information are led into the upper computer, and the upper computer is used for conducting fusion analysis on the spatial position information and the time information of the monitored object to form a moving curve of the monitored object under the preset spatial coordinate.

Description

Motion information acquisition system and method
Technical Field
The invention relates to the technical field of traffic engineering, in particular to a motion information acquisition system and a motion information acquisition method.
Background
In the scientific research of the pedestrian movement behaviors, the movement information of the pedestrian needs to be collected. However, the existing motion information acquisition method has the problem of limited popularization, and is difficult to acquire motion information of a plurality of pedestrians reliably, efficiently and at low cost in a specific environment, so that the scientific research requirement of the motion behavior of the pedestrians cannot be met. In order to meet the research requirements of pedestrian movement behaviors, a reliable, efficient and low-cost movement information acquisition system and method are urgently needed to be provided.
Disclosure of Invention
The embodiment of the invention provides a motion information acquisition system and a motion information acquisition method, which aim to solve the problem that the existing motion information acquisition method is difficult to reliably, efficiently and inexpensively acquire motion information of a plurality of pedestrians in a specific environment.
In a first aspect, to solve the above technical problem, an embodiment of the present invention provides a motion information acquiring system, including: the system comprises an upper computer, one or more distributed positioning devices and a time synchronization server;
the time synchronization server is connected with one or more distributed positioning devices, and is used for sending time synchronization information to the one or more distributed positioning devices, wherein the time synchronization information is used for setting the time of the one or more distributed positioning devices to be synchronous;
the distributed positioning devices are fixed on the monitored object and used for determining spatial position information and time information of the monitored object under a preset spatial coordinate and sending the spatial position information and the time information to the upper computer, and the upper computer is used for fusing and analyzing the spatial position information and the time information of the monitored object to form a moving curve of the monitored object under the preset spatial coordinate.
Optionally, the distributed positioning apparatus comprises:
the first transceiver is connected with the time synchronization server and is used for receiving time synchronization information sent by the time synchronization server;
the first card reader module is used for determining the spatial position information of the monitored object under the preset spatial coordinate;
a storage module;
the first processor is respectively connected with the first transceiver, the first card reader module and the storage module; the first transceiver is further configured to send the time synchronization information to a first processor, the first processor is configured to determine time information corresponding to the spatial position information according to the time synchronization information, the first card reader module is configured to send the read spatial position information of the monitored object under the preset coordinate to the first processor, and the first processor is configured to send the spatial position information and the time information to the storage module; the storage module is used for storing the spatial position information and the time information.
Optionally, the first processor and the storage module are connected by a Serial Peripheral Interface (SPI) bus.
Optionally, the preset spatial coordinate is formed by fixing a preset number of RFID cards on a plane with a preset area in an m × n manner in the same direction, (m × n)/m2M is used for representing the number of the RFID cards in a first direction, n is used for representing the number of the RFID cards in a second direction perpendicular to the first direction, and n and m are integers which are larger than or equal to 1.
Optionally, the motion information acquiring system further includes:
the auxiliary recording equipment is connected with the upper computer; the auxiliary entry equipment is used for reading the identification information of all the RFID cards and sending the identification information of all the RFID cards to the upper computer, and the upper computer is used for constructing the preset space coordinate according to the identification information of all the RFID cards;
when the auxiliary entry equipment is connected with the storage module, the auxiliary entry equipment is further used for reading the spatial position information of the monitoring object stored in the storage module under the preset coordinate and the time information corresponding to the spatial position information, and the read spatial position information and the time information are led into the upper computer.
Optionally, the auxiliary entry device comprises:
the second card reader module is used for reading the identification information of the RFID card;
the second processor is respectively connected with the second card reader module and the upper computer, the second card reader module is used for sending the read identification information of the RFID card to the second processor, and the second processor is used for sending the received identification information of the RFID card to the upper computer;
when the second processor is connected with the storage module, the second processor is used for reading the spatial position information of the monitoring object stored in the storage module under the preset coordinate and the time information corresponding to the spatial position information, and importing the read spatial position information and the read time information into the upper computer.
Optionally, the time synchronization server includes:
a third processor;
and the second transceiver is respectively connected with the third processor and the distributed positioning device, the third processor is used for judging whether the current time is the sending time of the time synchronization information, and if the current time is the sending time of the time synchronization information, the second transceiver is instructed to send the time synchronization information to the distributed positioning device.
In a second aspect, an embodiment of the present invention further provides a motion information collecting method, which is applied to the motion information collecting system described above;
the motion information acquisition method comprises the following steps:
the time synchronization server sends time synchronization information to the one or more distributed positioning devices, wherein the time synchronization information is used for setting the time of the distributed positioning devices to be synchronous;
the distributed positioning devices determine spatial position information of the monitored object under a preset spatial coordinate and time information corresponding to the spatial position information, and introduce the spatial position information and the time information into an upper computer;
and the upper computer performs fusion analysis on the spatial position information and the time information to form a moving curve of the monitoring object under a preset spatial coordinate.
Optionally, the sending, by the time synchronization server, time synchronization information to the one or more distributed positioning apparatuses includes:
determining a current time;
judging whether the current time is the sending time of the time synchronization information;
and if the current time is the sending time of the time synchronization information, the time synchronization server sends the time synchronization information to the distributed positioning device.
Optionally, the preset spatial coordinate is formed by fixing a preset number of RFID cards on a plane with a preset area in an m × n manner in the same direction, (m × n)/m2M is used for representing the number of the RFID cards in a first direction, n is used for representing the number of the RFID cards in a second direction perpendicular to the first direction, and n and m are integers which are larger than or equal to 1.
Optionally, the determining, by the one or more distributed positioning apparatuses, spatial position information of the monitored object in a preset spatial coordinate and time information corresponding to the spatial position information includes:
a first processor of the distributed positioning device judges whether an RFID card exists in a preset range around a first card reader module;
if an RFID card exists in a preset range around the first card reader module, the first processor instructs the first card reader module to acquire identification information of the RFID card, and determines the identification information of the RFID card as spatial position information of the monitoring object under a preset spatial coordinate;
and the first processor determines the current time corresponding to the identification information of the RFID card.
Optionally, after the step of determining, by the first processor, a current time corresponding to the time of acquiring the identification information of the RFID card, the method further includes:
the first processor sends the identification information of the RFID card and the current time corresponding to the identification information of the RFID card to a storage module of the distributed positioning device;
and the storage module of the distributed positioning device stores the identification information of the RFID card and the corresponding current time when the identification information of the RFID card is acquired according to a preset coding mode.
Optionally, the importing the spatial position information and the time information into an upper computer includes:
and leading the identification information of the RFID card stored in the storage module and the current time corresponding to the identification information of the RFID card into the upper computer through auxiliary entry equipment.
Optionally, before the step of determining whether an RFID card exists within a preset range around the first card reader module, the method further includes:
the first processor detects whether a storage module is available;
if the first processor detects that the storage module is available, the first processor detects whether the time of the plurality of distributed positioning devices is synchronized;
and if the first processor detects that the time of the plurality of distributed positioning devices is synchronized, counting the time of each distributed positioning device.
Optionally, the upper computer performs fusion analysis on the spatial position information and the time information, and the fusion analysis includes:
the upper computer decodes the spatial position information and the time information to obtain a coordinate value of the monitored object under a preset spatial coordinate and time corresponding to the coordinate value;
and the upper computer determines a moving curve of the monitored object under a preset space coordinate according to the coordinate value of the monitored object under the preset space coordinate and the time corresponding to the coordinate value.
Optionally, before the step of performing fusion analysis on the spatial position information and the time information by the upper computer, the method further includes:
the upper computer acquires identification information of all the RFID cards and position information corresponding to the identification information of the RFID cards;
and the upper computer constructs a preset space coordinate according to the identification information of all the RFID cards and the position information corresponding to the identification information of the RFID cards.
The embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, an opportunity network is formed by an upper computer, a distributed positioning device and a time synchronization server, the distributed positioning device is fixed on a monitored object, time synchronization information is sent to the distributed positioning device through the time synchronization server to ensure that the time between the distributed positioning devices is synchronous, then the spatial position information of the distributed positioning device under a preset spatial coordinate and the time information corresponding to the spatial position information are determined, and finally the movement track of the monitored object under the preset spatial coordinate is determined through the spatial position information and the time information, and the movement behavior of the monitored object can be researched, so that the accuracy and the acquisition efficiency of the movement information acquisition method are improved.
Drawings
Fig. 1 is a schematic diagram of an architecture of a motion information acquisition system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the operation of the motion information acquisition system according to the embodiment of the present invention;
FIG. 3 is a schematic diagram of preset spatial coordinates according to an embodiment of the present invention;
FIG. 4 is a diagram of the logical architecture of a motion information collection system according to an embodiment of the present invention;
FIG. 5 is a second schematic diagram of an embodiment of a motion information acquisition system according to the present invention;
FIG. 6 is a diagram of a hardware architecture of an auxiliary entry device according to an embodiment of the present invention;
FIG. 7 is a diagram of the hardware architecture of a distributed positioning apparatus according to an embodiment of the present invention;
FIG. 8 is a diagram of the hardware architecture of a time synchronization server according to an embodiment of the present invention;
FIG. 9 is a flowchart illustrating a motion information collection method according to an embodiment of the present invention;
FIG. 10 is a second schematic flowchart of a motion information collecting method according to an embodiment of the present invention;
fig. 11 is a third schematic flow chart of the motion information acquisition method according to the embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The terms first, second and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
Referring to fig. 1 to 2, an embodiment of the present invention provides a motion information acquisition system, including: an upper computer 11, one or more distributed positioning devices 12 and a time synchronization server 13.
Wherein the time synchronization server 13 is connected to one or more distributed positioning apparatuses 12, the time synchronization server 13 is configured to send time synchronization information to the one or more distributed positioning apparatuses 12, and the time synchronization information is configured to set the time of the one or more distributed positioning apparatuses 12 to be synchronized;
one or more distributed positioning device 12 with host computer 11 is connected, distributed positioning device 12 fixes on the monitoring object, distributed positioning device 12 is used for confirming the spatial position information and the time information of monitoring object under preset spatial coordinate 14, and will spatial position information and time information send for host computer 11, host computer 11 is used for with the spatial position information and the time information of monitoring object fuse the analysis, form the moving curve of monitoring object under preset spatial coordinate 14.
In the embodiment of the present invention, the monitoring object may be a pedestrian or a movable object, for example: the monitoring object can be a pedestrian or a vehicle. The spatial position information is used for representing motion information of the monitored object under a preset spatial coordinate at different times within a preset time range, and comprises the following steps: coordinate values relative to the x axis, the y axis, the current position of the distributed positioning device, the running speed of the monitored object and the like. The time information may be relative time corresponding to the spatial location information, and the relative time may be determined based on time synchronization information.
In the embodiment of the invention, the motion information acquisition system can simultaneously acquire the motion information of a plurality of monitoring objects, one monitoring object can be fixed with one or more distributed positioning devices, and the number of the distributed positioning devices fixed on one monitoring object can be determined according to the experiment requirement.
In the embodiment of the present invention, an RFID (Radio Frequency Identification) Card may be used to set a preset spatial coordinate inside the experiment Field, where the RFID Card refers to a non-contact electronic tag/Card, and the RFID Card includes an ID (Identification Card) Card, an IC (Integrated Circuit Card) Card, an NFC (Near Field Communication) Card or other electronic cards/tags.
For example, ISO (International Organization for Standardization) card type RFID tags may be used to construct preset spatial coordinates, that is, scales of the spatial coordinates are implemented by using the RFID tags, and the number of the RFID tags in a unit area may be used to represent the spatial resolution of the motion information acquisition system. It can be understood that different spatial coordinate scales can be realized by adjusting the arrangement distance of the RFID cards, and then different spatial resolutions can be realized.
With continued reference to fig. 2 and 3, the predetermined spatial coordinates are formed by fixing a predetermined number of RFID (Radio Frequency Identification) cards 141 on a plane of a predetermined area in the same direction in an mxn manner, wherein the RFID cards are formed in (mxn)/mxn format2For the resolution of the preset spatial coordinates, m is used to represent the number of the RFID cards 141 in the first direction, n is used to represent the number of the RFID cards 141 in the second direction perpendicular to the first direction, and n and m are integers greater than or equal to 1, and the preset area may be a unit of square meter, but is not limited thereto.
For example: the RFID card can be installed on the carpet to form an RFID card ground mat, and the RFID card ground mat is taken as a preset space coordinate, so that the mobile carpet is convenient to move, disassemble and use for many times. When the spatial coordinate is manufactured, a preset number of RFID cards are fixed on a carpet in a unit square meter in the same direction in an mxn mode, and the direction and the serial number are marked on the carpet to be used as a spatial coordinate, (mxn)/m2I.e. the resolution of the spatial coordinates.
It should be noted that, by setting preset spatial coordinates in the motion experimental field, spatial position information of the current location where the distributed positioning apparatus is located can be determined, and relative spatial coordinate information of the distributed positioning apparatus can be determined by the spatial position information.
In order to ensure that the preset spatial coordinates have higher spatial resolution, the number of the RFID cards needs to be increased, but the radio frequency interference phenomenon occurs when the number of the RFID cards is too large. In order to ensure that no radio frequency interference occurs between adjacent coordinates, the RFID cards cannot adopt contact type induction, cannot be overlapped and cannot adopt active power supply.
Wherein, the size of a single ISO card type RFID electronic tag is as follows85.6mm multiplied by 54mm, 11 multiplied by 18 ISO card type RFID cards (85.6 multiplied by 11 is less than or equal to 1000 mm; 54 multiplied by 18 is less than or equal to 1000mm) can be arranged on the carpet with unit square meter at most. When the RFID cards are actually distributed, the size of the plastic packaging bag for the RFID cards is considered, and meanwhile, certain gaps are reserved among the RFID cards to avoid the radio frequency interference caused by the overlapping of the RFID cards. When the resolution of the preset spatial coordinates is low, the precision of the experimental data cannot be guaranteed. The preset resolution of the spatial coordinates can be given according to the experimental precision requirement, and the resolution of the general spatial coordinates is (5 multiplied by 5)/m2～(10×16)/m2In between, they are preferred. Wherein the resolution of the spatial coordinates shown in FIG. 3 is (10X 16)/m2。
It should be noted that the above description regarding the resolution of the preset spatial coordinate is only an example and is not limiting, and it is understood that the embodiment of the present invention does not specifically limit the resolution of the preset spatial coordinate.
In the embodiment of the invention, a unique time synchronization server is arranged in a motion experimental field, wherein the time synchronization server is used for wirelessly broadcasting time synchronization information to the distributed positioning devices, the broadcasting time of the time synchronization server is relative synchronization time, the time of the distributed positioning devices can be synchronized with the time of the time synchronization server, and the time synchronization among the distributed positioning devices is further ensured.
Each monitoring object needs to wear a distributed positioning device when participating in an experiment, and the distributed positioning device keeps high-precision relative time synchronization with a time synchronization server in a wireless communication mode to form an opportunity network. The distributed positioning device continuously transmits wireless signals to the ground direction paved with the ground mat, when receiving the wireless signals, the RFID card installed on the ground mat can utilize the wireless signals to carry out wireless charging, the RFID card sends identification information of the RFID card to the distributed positioning device, wherein the identification information of the RFID card can be used for representing the spatial position information of the distributed positioning device under a preset spatial coordinate, namely the spatial position information of a monitoring object, and finally the distributed positioning device stores the identification information of the RFID card and corresponding time information together locally.
Alternatively, the identification information of the RFID card may be an ID number of the RFID card, but is not limited thereto.
After collection or experiments are finished, all spatial position information and time information acquired by the distributed positioning device are imported into the upper computer, the upper computer performs fusion analysis on all spatial position information and time information of the monitored objects to obtain a moving curve of the monitored objects under a preset spatial coordinate, and in addition, the upper computer can also be used for obtaining the spatial position information corresponding to each monitored object at different times.
Referring to fig. 4, the motion information acquisition system according to the embodiment of the present invention sequentially includes, from bottom to top, from a logic architecture level: the physical layer, the communication layer, the data layer, the support layer and the application layer are five logical layers/elements, wherein each logical layer/element and the interrelation between the logical layers/elements are shown in fig. 4.
The physical layer can realize the initialization of an experimental field and the preparation of equipment required by an experiment through physical facility equipment with a specific function; the communication layer can realize effective real-time communication among all functional modules of the system; the data layer can realize local storage, transmission and backup of spatial position information, time information and the like; the supporting layer can support various functions of the system application layer based on the movable storage device, auxiliary recording equipment required by the system and the like; the application layer realizes experiment information management and data conversion through a visual user interface and an operation interface, and supports function expansion development.
The specific working flow of the motion information acquisition system of the embodiment of the invention is as follows:
1) initializing a system: laying space coordinates according to the condition of the experimental field for pedestrian movement, finishing the setting of an upper computer program (the setting of the virtual experimental field in the upper computer program can also be finished after the experiment is finished) according to the laying condition of the space coordinates, and generating experimental field information;
2) an experiment preparation stage: starting a time synchronization server and all distributed positioning devices, wherein the distributed positioning devices automatically perform relative time synchronization with the time synchronization server, corresponding work indicator lamps are designed on the distributed positioning devices to indicate that equipment completes time synchronization and work, and the time synchronization process generally does not exceed 1 minute;
3) and (3) an experiment implementation stage: the monitoring object wears the distributed positioning device, the experiment is started according to a set experiment scheme, the whole experiment process is controlled within 8 hours, the battery of the distributed positioning device is exhausted due to overlong time, and the system cannot work normally;
4) and (3) an experimental recovery stage: after the experiment is finished, recovering the distributed positioning device and the passive space coordinate;
5) data analysis: and (4) importing the experimental data stored by all the distributed positioning devices into an upper computer, operating a data fusion analysis module of the upper computer, automatically completing file merging and data fusion analysis by the upper computer, and generating a basic data chart, namely a moving curve of the monitored object.
Referring to fig. 5, in a physical architecture level, the motion information acquiring system includes: the system comprises a time synchronization server, a distributed positioning device, a preset space coordinate and an upper computer, wherein the time synchronization server, the distributed positioning device, the preset space coordinate and the upper computer are core components and are indispensable constituent units of a motion information acquisition system. In addition, in order to facilitate the user operation, the motion information collecting system further comprises: the auxiliary entry equipment, wherein the auxiliary entry equipment can be the auxiliary entry equipment of hand-held type RF (Radio Frequency) card, the auxiliary entry equipment can be used for entering laboratory bench information to and import spatial position information and the time information that distributed positioner saved into in the host computer.
When fusion analysis of the original collected data is carried out, laboratory field information needs to be virtually reproduced on the upper computer, so that information of all RFID cards in the laboratory field needs to be input to initialize the laboratory field in an upper computer program. Because the workload of inputting laboratory information is large, taking a 10-square meter laboratory as an example, 1600 pieces of RFID card information are required to be input by 10 × (10 × 16). The auxiliary input equipment is designed for facilitating the input of RF card information by experimenters, and facilitates the initialization of a virtual experimental yard and the maintenance and the upgrade of a system.
It should be noted that the auxiliary entry device can read the 13-bit international unique ID number of the RF card and send it to the PC through the serial port. The upper computer running on the PC is provided with a corresponding processing program, and can automatically generate RF card information from the read ID number and then generate experimental field information.
Further, the auxiliary recording equipment is connected with the upper computer; the auxiliary entry equipment is used for reading the identification information of all the RFID cards and sending the identification information of all the RFID cards to the upper computer, and the upper computer is used for constructing the preset space coordinate according to the identification information of all the RFID cards; when the auxiliary entry equipment is connected with the storage module, the auxiliary entry equipment is also used for reading the spatial position information of the monitoring object stored in the storage module under the preset coordinate and the time information corresponding to the spatial position information, and sending the read spatial position information and the time information to the upper computer.
Referring to fig. 6, the auxiliary entry device includes: a second processor 601 and a second card reader module 602; the second card reader module 602 is configured to read identification information of the RFID card; the second processor 601 is connected to the second card reader module 602 and the upper computer, respectively, the second card reader module 602 is configured to send the read identification information of the RFID card to the second processor 601, and the second processor 601 is configured to send the received identification information of the RFID card to the upper computer; when the second processor 601 is connected to the storage module, the second processor 601 is configured to read spatial position information of the monitoring object stored in the storage module under a preset coordinate and time information corresponding to the spatial position information, and send the read spatial position information and the read time information to the upper computer.
In the embodiment of the invention, an opportunity network is formed by an upper computer, a distributed positioning device and a time synchronization server, the distributed positioning device is fixed on a monitored object, time synchronization information is sent to the distributed positioning device through the time synchronization server to ensure that the time between the distributed positioning devices is synchronous, then the spatial position information of the distributed positioning device under a preset spatial coordinate and the time information corresponding to the spatial position information are determined, and finally the movement track of the monitored object under the preset spatial coordinate is determined through the spatial position information and the time information, and the movement behavior of the monitored object can be researched, so that the accuracy and the acquisition efficiency of the movement information acquisition method are improved.
In addition, the embodiment of the invention can adopt wireless signals to monitor pedestrians, and is different from the traditional method in that the embodiment of the invention does not need to arrange a positioning base station as infrastructure and does not need to equip each experimenter with expensive information processing equipment.
Referring to fig. 7, the distributed positioning apparatus includes: a first transceiver 701, a first card reader module 702, a memory module 703 and a first processor 704; the first transceiver 701 is connected to the time synchronization server, and the first transceiver 701 is configured to receive time synchronization information sent by the time synchronization server; the first card reader module 702 is configured to determine spatial position information of the monitored object under the preset spatial coordinate; the first processor 704 is connected to the first transceiver 701, the first card reader module 702, and the storage module 703 respectively; the first transceiver 701 is further configured to send the time synchronization information to a first processor 704, the first processor 704 is configured to determine time information corresponding to the spatial position information according to the time synchronization information, the first card reader module 702 is configured to send the read spatial position information of the monitored object under the preset coordinate to the first processor 704, and the first processor 704 is configured to send the spatial position information and the time information to the storage module 703; the storage module 703 is configured to store the spatial location information and the time information.
After the first processor sends the spatial position information and the time information to the storage module, the storage module temporarily stores the spatial position information and the time information. And the storage module can be taken out from the distributed positioning device until the data acquisition is finished, the storage module is connected with an upper computer, and all the spatial position information stored in the storage module and the time information corresponding to the spatial position information are led into the upper computer. Furthermore, auxiliary entry equipment can be adopted to lead the data stored in the storage module into the upper computer, and the auxiliary entry equipment is respectively connected with the upper computer and the storage module.
In the process of motion information acquisition, the monitoring object participating in the experiment needs to wear the distributed positioning device, and in order to facilitate the monitoring object to wear the distributed positioning device, the distributed positioning device is provided with a buckle, and the distributed positioning device can be fixed on the monitoring object through the buckle. The method comprises the steps of determining the spatial position information of a distributed positioning device under a preset spatial coordinate, and determining the position information of a monitored object under the preset spatial coordinate.
In addition, with continued reference to fig. 7, the distributed positioning apparatus is an active device, i.e., the distributed positioning apparatus further includes a power module 705 for providing power to the first transceiver 701, the first card reader module 702, the storage module 703, and the first processor 704.
Further, the first processor may be an MCU (micro controller Unit) core processor, which employs an ARM chip of STM32 and has a main frequency of 72 MHZ; the first card reader module adopts an RC522 single chip, and the first processor is connected with the storage module by adopting an SPI bus; the storage module can adopt a TF card, the TF card is also called a T-Flash card and is a microminiature storage card, and the capacity of the storage module can be 8G.
In summary, the distributed positioning apparatus mainly provides the following three functions:
1) wirelessly communicating with a time synchronization server, transmitting and synchronizing time synchronization information.
2) Reading the spatial position information of the distributed positioning device under a preset spatial coordinate in real time, for example: coordinate values of the spatial coordinates of the experimental field.
3) And storing the read spatial position information and time information corresponding to the spatial position information in a storage module every time, wherein the spatial position information can be coordinate values of a distributed positioning device at a preset spatial coordinate, and the time information is the current time for acquiring the spatial position information so as to be fused and analyzed by an upper computer program after the experiment is finished.
Referring to fig. 8, the time synchronization server includes: a third processor 801 and a second transceiver 802; the second transceiver 802 is connected to the third processor 801 and the distributed positioning apparatus, respectively, where the third processor 801 is configured to determine whether a current time is a sending time of the time synchronization information, and if the current time is the sending time of the time synchronization information, instruct the second transceiver 802 to send the time synchronization information to the distributed positioning apparatus.
In the embodiment of the invention, the time synchronization server is a time service center, and the main function of the time synchronization server is to periodically send time synchronization information to ensure the time synchronization of the whole network. Further, the time synchronization server may provide millisecond time synchronization for all distributed positioning devices. In addition, the time synchronization information includes: relative synchronization time, the time synchronization server can periodically send time synchronization information to the distributed positioning devices in a wireless communication mode, namely, the relative time value is periodically broadcasted to all the distributed positioning devices, each distributed positioning device and the time synchronization server keep time synchronization, and therefore time synchronization among all the distributed positioning devices is achieved.
Because the time space information and the time information which are led into the upper computer from the distributed positioning device are coding data, the coding data can not be directly used for analyzing the movement behaviors, and the original data collected by the equipment needs to be fused and analyzed through a certain data decoding mode and a certain fusion technology, a matched data fusion analysis program, namely the upper computer, is designed and developed. It can be understood that the upper computer may decode the spatial position information and the time information according to a preset encoding manner and perform fusion analysis on the decoded data to form a movement curve or a movement track of the monitoring object under a preset spatial coordinate.
Before the spatial position information and the time information are imported into an upper computer, a virtual experimental field needs to be set according to the layout condition of an actual experimental field to generate experimental field information, namely, a preset spatial coordinate is constructed; importing the spatial position information and the time information stored by the distributed positioning device into an upper computer through auxiliary entry equipment; and decoding the spatial position information and the time information one by one according to a preset coding mode (eight-bit hexadecimal) of the stored spatial position information and the time information to obtain an RF card ID, time, a relative x axis, a relative y axis, speed and the like, wherein the time, the coordinate and the speed are uniformly expressed by the eight-bit hexadecimal, and the number of bits occupied by each is defined according to needs.
In the embodiment of the invention, the upper computer program is realized based on MFC library programming in a VC + + integrated development environment, and the produced exe file can be directly operated on a PC without installation, so that the method is suitable for operating systems such as Windows XP and Windows 7; meanwhile, the upper computer also provides a user graphical interface, so that experimenters can conveniently view and reproduce experimental field information.
In summary, the upper computer can mainly realize the following functions:
1) through an imaging mode (similar to a jigsaw puzzle), a user sets the placing condition of a space coordinate to generate virtual experimental field information, and the virtual experimental field information can also be butted with auxiliary input equipment to automatically generate experimental field information, namely, a preset space coordinate is constructed;
2) recording and storing experimental field information for direct use in multiple experiments;
3) reading experiment information stored by all distributed positioning equipment; fusing information of all distributed positioning devices so that time-based query, space-based query and equipment-based query can be performed; and converting the spatial position information and the time information into coordinate values and time of a standard unit respectively.
4) Generating a moving curve of the monitored object in the experimental field;
5) and fusing and storing experimental data, wherein the experimental data comprises spatial position information and time information.
The embodiment of the invention adopts the radio frequency identification technology and the opportunity network technology to build the motion information acquisition system. The motion information acquisition system provided by the embodiment of the invention can be used for acquiring the motion information of the monitored object, the motion information of the monitored object can provide basic data support for motion basic theory research and motion model verification, the motion behavior of the monitored object is finally researched, and the accuracy and the acquisition efficiency of the motion information acquisition method can be improved.
In addition, the embodiment of the invention adopts wireless signals to monitor pedestrians, and is different from the traditional method in that the embodiment of the invention does not need to arrange a positioning base station as infrastructure and does not need to equip each experimenter with expensive information processing equipment.
The motion information acquisition system of the embodiment of the invention covers the aspects of basic data acquisition, data transmission and storage, data conversion, preprocessing and the like, and the functions of the system can comprise: the system comprises a recognition function, a tracking function, a real-time communication and data storage function, a data conversion and preprocessing function and the like. Meanwhile, in order to ensure effective storage and reuse of experimental information and meet the requirements of system function expansion and re-development, the system should also have a virtual reproduction function and an extensible function.
Taking the monitored object as a pedestrian as an example, the functions of the motion information acquisition system provided by the embodiment of the invention are introduced one by one. Wherein the content of the first and second substances,
a pedestrian recognition function: the identification and recording of individual pedestrians or groups is a function that the system should realize firstly, and like the Pedestrian Detection (Pedestrian Detection) in the Pedestrian video monitoring technology, the identification of individual pedestrians and the one-to-one correspondence between the individual pedestrians and the collected data should be realized.
In order to realize the functions, the embodiment of the invention can realize individual pedestrian marking through the distributed positioning device with the unique fixed number, thereby completing the recording of individual pedestrian movement information.
A pedestrian tracking function: the real-time Tracking and recording of the Pedestrian movement track is the key of Pedestrian movement data acquisition, is also a core function required to be realized by a system, is equivalent to Pedestrian Tracking (Pedestrian Tracking) in a video monitoring technology, and needs to record time and position information of specific Pedestrian individuals or groups at specific or continuous time points, and instant null parameters to generate the Pedestrian movement track.
In order to achieve the above functions, the embodiments of the present invention may set the time of the distributed positioning apparatus to be synchronized through the time synchronization server, so as to count the time information of the individual or group of the pedestrian, and the position information of the individual or group of the pedestrian may be determined through the distributed positioning apparatus.
Real-time communication and data storage functions: the communication function realizes the time synchronization of the experimental field and the transmission of the position information of the experimenter, stores the synchronized time information, the space position information and the time information, and supports the real-time communication among all the functional modules of the system and the local storage of the acquired data.
Data conversion and preprocessing functions: the scale of the space coordinate of the experimental field is realized by arranging the RFID card, and the time synchronization is realized by receiving the broadcast time of the time synchronization server, so that the acquired data are time information in a specific coding format and ID information of the IFID card, and in order to realize the readability of the data, the system also supports the fusion analysis of the acquired data and needs to carry out a certain degree of pretreatment on the data.
The bidirectional query function between the distributed positioning device and the experimenter can be realized by utilizing a search function in Excel, and specific experimenter information is searched and displayed based on the serial number of the distributed positioning device and is used for analyzing the crowd characteristics of the specific pedestrian movement selection behavior; based on the numbers/names of the experimenters, specific data collected by the distributed positioning device are searched for researching the movement selection behaviors and preferences of specific crowds (gender, age group, height and the like).
Virtual reproduction function: the system has the advantages that the system popularization and the reproducibility of the experimental information are considered, the labor cost is saved, the experimental efficiency is improved, the application population is expanded, the system provides a user graphic interface, the virtual experimental field information is generated, and the experimental field information is recorded and stored so as to be used for the experiment information to be consulted and used in the next experiment.
Expandable functions: the universality aiming at different pedestrian motion scenes (experimental scenes) is kept as far as possible at the beginning of system design, but the problem of neglect in considering details of special pedestrian motion scenes is avoided.
Referring to fig. 9, an embodiment of the present invention further provides a motion information acquiring method, which is applied to the motion information acquiring system shown in fig. 1 to 2, and the method includes the specific steps of:
step 901: the time synchronization server sends time synchronization information to the one or more distributed positioning devices, wherein the time synchronization information is used for setting the time of the distributed positioning devices to be synchronous;
referring to fig. 10, the specific process of step 901 includes:
step 9011: the third processor determines the current time;
step 9012: the third processor judges whether the current time is the sending time of the time synchronization information; if the current time is the sending time of the time synchronization information, executing step 9013; if the current time is not the sending time of the time synchronization information, step 9011 is repeatedly executed.
Step 9013: and if the current time is the sending time of the time synchronization information, the time synchronization server sends the time synchronization information to the distributed positioning device, and further sends the time synchronization information to the distributed positioning device through a second transceiver. Step 9011 is repeated after step 9013.
It should be noted that, before step 9011, steps such as starting up, initializing the third processor, initializing the second transceiver, and starting up a time timer need to be performed.
In this embodiment of the present invention, the time synchronization information at least includes: the time synchronization server periodically transmits time synchronization information to the one or more distributed positioning devices via wireless communication with respect to the synchronization time value.
Step 902: the distributed positioning devices determine spatial position information of the monitored object under a preset spatial coordinate and time information corresponding to the spatial position information, and introduce the spatial position information and the time information into an upper computer;
in the embodiment of the present invention, the monitoring object may be a pedestrian or a movable object, for example: the monitoring object can be a pedestrian or a vehicle. The spatial position information is used for representing motion information of the monitored object under a preset spatial coordinate at different times within a preset time range, and comprises the following steps: coordinate values relative to the x axis, the y axis, the current position of the distributed positioning device, the running speed of the monitored object and the like. The time information may be relative time corresponding to the spatial location information, and the relative time corresponding to the spatial location information may be determined according to the time synchronization information.
With continued reference to fig. 2 and 3, the predetermined spatial coordinates are formed by fixing a predetermined number of RFID (Radio Frequency Identification) cards 141 on a plane of a predetermined area in the same direction in an mxn manner, wherein the RFID cards are formed in (mxn)/mxn format2For the resolution of the preset spatial coordinates, m is used to represent the number of the RFID cards 141 in the first direction, n is used to represent the number of the RFID cards 141 in the second direction perpendicular to the first direction, and n and m are integers greater than or equal to 1, and the preset area may be a unit of square meter, but is not limited thereto.
Referring to fig. 11, when a preset spatial coordinate is formed by an RFID card, spatial position information of the monitoring object under the preset spatial coordinate may be determined according to identification information of the RFID card, and a specific process of step 902 includes:
step 9021: a first processor of the distributed positioning device judges whether an RFID card exists in a preset range around a first card reader module; if the RFID card exists in the preset range around the first card reader module, executing step 9022; if no RFID card exists in the preset range around the first card reader module, the step 9021 is repeatedly executed.
Step 9022: if an RFID card exists in a preset range around the first card reader module, the first processor instructs the first card reader module to acquire identification information of the RFID card, and determines the identification information of the RFID card as spatial position information of the monitoring object under a preset spatial coordinate.
Step 9023: the first processor determines the current time for acquiring the identification information of the RFID card;
in the embodiment of the present invention, the time information corresponding to the spatial position information may be understood as a current time corresponding to the time when the identification information of the RFID card is acquired. After determining the spatial location information, the first processor determines a current time corresponding to when the identification information of the RFID card is acquired.
With continuing reference to fig. 11, after step 9023, the method further comprises:
step 9024: the storage module stores the identification information of the RFID card and the current time for acquiring the identification information of the RFID card;
the first processor sends the identification information of the RFID card and the current time corresponding to the identification information of the RFID card to a storage module of the distributed positioning device; and the storage module of the distributed positioning device stores the identification information of the RFID card and the corresponding current time when the identification information of the RFID card is acquired according to a preset coding mode.
In the embodiment of the present invention, the encoding method is used to represent a method of storing spatial location information and time information in a storage module, and common encoding methods include: ASCII (American Standard Code for Information exchange) Code, GB2312 Code (simplified Chinese), GBK (GBK is the first letter of "national Standard" and "extended" Chinese Pinyin, English name: Chinese Internal Code Specification), Unicode (Unicode ), utf-8(8-bit Unicode Transformation Format, Unicode), etc. The predetermined encoding manner may be eight-bit hexadecimal, but is not limited thereto.
In the embodiment of the invention, the identification information of the RFID card stored in the storage module and the current time corresponding to the identification information of the RFID card can be sent to the upper computer through the auxiliary entry equipment.
With continued reference to fig. 11, prior to step 9021, the method further comprises:
step 9025: the first processor detects whether a storage module is available; if the first processor detects that the storage module is available, execute step 9026; if the first processor detects that the storage module is not available, step 9025 is executed repeatedly.
Step 9026: if the first processor detects that the storage module is available, the first processor detects whether the time of the plurality of distributed positioning devices is synchronized; if the first processor detects that the times of the plurality of distributed positioning apparatuses are synchronized, execute step 9027; if the first processor detects that the times of the plurality of distributed positioning apparatuses are not synchronized, step 9026 is executed repeatedly.
Step 9027: and if the first processor detects that the time of the plurality of distributed positioning devices is synchronized, counting the time of each distributed positioning device, namely starting local time.
It should be noted that, before step 9025, the steps of starting up, initializing the port, initializing the first transceiver, and initializing the storage module and the first card reader module need to be executed.
Step 903: and the upper computer performs fusion analysis on the spatial position information and the time information to form a moving curve of the monitoring object under a preset spatial coordinate.
In the embodiment of the invention, the upper computer decodes the spatial position information and the time information to obtain a coordinate value of the monitored object under a preset spatial coordinate and time corresponding to the coordinate value; and the upper computer determines a moving curve of the monitored object under a preset space coordinate according to the coordinate value of the monitored object under the preset space coordinate and the time corresponding to the coordinate value.
Optionally, between the step of performing fusion analysis on the spatial position information and the time information by the upper computer, the method further includes: the upper computer acquires identification information of all the RFID cards and position information corresponding to the identification information of the RFID cards; and the upper computer constructs a preset space coordinate according to the identification information of all the RFID cards and the position information corresponding to the identification information of the RFID cards.
The embodiment of the invention adopts the radio frequency identification technology and the opportunity network technology to build the motion information acquisition system. The motion information acquisition system of the embodiment of the invention can be used for acquiring the motion information of the monitored object, the motion information of the monitored object can provide basic data support for motion basic theory research and motion model verification, and finally, the motion behavior of the monitored object is researched, so that the accuracy and the acquisition efficiency of the motion information acquisition method can be improved.
In addition, the embodiment of the invention adopts wireless signals to monitor pedestrians, and is different from the traditional method in that the embodiment of the invention does not need to arrange a positioning base station as infrastructure and does not need to equip each experimenter with expensive information processing equipment.
The motion information acquisition system of the embodiment of the invention covers the aspects of basic data acquisition, data transmission and storage, data conversion, preprocessing and the like, and the functions of the system comprise: the system comprises a recognition function, a tracking function, a real-time communication and data storage function, a data conversion and preprocessing function and the like. Meanwhile, in order to ensure effective storage and reuse of experimental information and meet the requirements of system function expansion and re-development, the system should also have a virtual reproduction function and an extensible function.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (16)

1. A motion information acquisition system, comprising: the system comprises an upper computer, one or more distributed positioning devices and a time synchronization server; wherein the content of the first and second substances,
the time synchronization server is connected with one or more distributed positioning devices, and is used for sending time synchronization information to the one or more distributed positioning devices, wherein the time synchronization information is used for setting the time of the one or more distributed positioning devices to be synchronous;
the distributed positioning devices are fixed on the monitored object and used for determining spatial position information and time information of the monitored object under a preset spatial coordinate and sending the spatial position information and the time information to the upper computer, and the upper computer is used for fusing and analyzing the spatial position information and the time information of the monitored object to form a moving curve of the monitored object under the preset spatial coordinate.
2. The motion information acquisition system according to claim 1, wherein the distributed positioning apparatus comprises:
the first transceiver is connected with the time synchronization server and is used for receiving time synchronization information sent by the time synchronization server;
the first card reader module is used for determining the spatial position information of the monitored object under the preset spatial coordinate;
a storage module;
the first processor is respectively connected with the first transceiver, the first card reader module and the storage module; the first transceiver is further configured to send the time synchronization information to a first processor, the first processor is configured to determine time information corresponding to the spatial position information according to the time synchronization information, the first card reader module is configured to send the read spatial position information of the monitored object under the preset coordinate to the first processor, and the first processor is configured to send the spatial position information and the time information to the storage module; the storage module is used for storing the spatial position information and the time information.
3. The athletic information collection system of claim 2, wherein the first processor is coupled to the memory module using a Serial Peripheral Interface (SPI) bus.
4. The motion information collecting system according to claim 2, wherein the predetermined spatial coordinates are formed by fixing a predetermined number of RFID cards on a plane of a predetermined area in an mxn manner in the same direction, (mxn)/m2M is used for representing the number of the RFID cards in a first direction, n is used for representing the number of the RFID cards in a second direction perpendicular to the first direction, and n and m are integers which are larger than or equal to 1.
5. The motion information acquisition system according to claim 4, further comprising:
the auxiliary recording equipment is connected with the upper computer; the auxiliary entry equipment is used for reading the identification information of all the RFID cards and sending the identification information of all the RFID cards to the upper computer, and the upper computer is used for constructing the preset space coordinate according to the identification information of all the RFID cards;
when the auxiliary entry equipment is connected with the storage module, the auxiliary entry equipment is further used for reading the spatial position information of the monitoring object stored in the storage module under the preset coordinate and the time information corresponding to the spatial position information, and the read spatial position information and the time information are led into the upper computer.
6. Motion information acquisition system according to claim 5, characterized in that the auxiliary entry device comprises:
the second card reader module is used for reading the identification information of the RFID card;
the second processor is respectively connected with the second card reader module and the upper computer, the second card reader module is used for sending the read identification information of the RFID card to the second processor, and the second processor is used for sending the received identification information of the RFID card to the upper computer;
when the second processor is connected with the storage module, the second processor is used for reading the spatial position information of the monitoring object stored in the storage module under the preset coordinate and the time information corresponding to the spatial position information, and importing the read spatial position information and the read time information into the upper computer.
7. The motion information acquisition system according to claim 1, wherein the time synchronization server comprises:
a third processor;
and the second transceiver is respectively connected with the third processor and the distributed positioning device, the third processor is used for judging whether the current time is the sending time of the time synchronization information, and if the current time is the sending time of the time synchronization information, the second transceiver is instructed to send the time synchronization information to the distributed positioning device.
8. A motion information acquisition method applied to the motion information acquisition system according to any one of claims 1 to 7;
the motion information acquisition method comprises the following steps:
the time synchronization server sends time synchronization information to the one or more distributed positioning devices, wherein the time synchronization information is used for setting the time of the distributed positioning devices to be synchronous;
the distributed positioning devices determine spatial position information of the monitored object under a preset spatial coordinate and time information corresponding to the spatial position information, and introduce the spatial position information and the time information into an upper computer;
and the upper computer performs fusion analysis on the spatial position information and the time information to form a moving curve of the monitoring object under a preset spatial coordinate.
9. The method of claim 8, wherein the time synchronization server sends time synchronization information to the one or more distributed positioning apparatuses, comprising:
determining a current time;
judging whether the current time is the sending time of the time synchronization information;
and if the current time is the sending time of the time synchronization information, the time synchronization server sends the time synchronization information to the distributed positioning device.
10. The method of claim 8, wherein the predetermined spatial coordinates are formed by fixing a predetermined number of RFID cards onto a plane of a predetermined area in an mxn manner with a predetermined direction, (mxn)/m2M is used for representing the number of the RFID cards in a first direction, n is used for representing the number of the RFID cards in a second direction perpendicular to the first direction, and n and m are integers which are larger than or equal to 1.
11. The method of claim 10, wherein the one or more distributed positioning apparatuses determine spatial position information of the monitored object at preset spatial coordinates and time information corresponding to the spatial position information, and the method comprises:
a first processor of the distributed positioning device judges whether an RFID card exists in a preset range around a first card reader module;
if an RFID card exists in a preset range around the first card reader module, the first processor instructs the first card reader module to acquire identification information of the RFID card, and determines the identification information of the RFID card as spatial position information of the monitoring object under a preset spatial coordinate;
and the first processor determines the current time corresponding to the identification information of the RFID card.
12. The method of claim 11, wherein after the step of the first processor determining a current time corresponding to when the identification information of the RFID card was obtained, the method further comprises:
the first processor sends the identification information of the RFID card and the current time corresponding to the identification information of the RFID card to a storage module of the distributed positioning device;
and the storage module of the distributed positioning device stores the identification information of the RFID card and the corresponding current time when the identification information of the RFID card is acquired according to a preset coding mode.
13. The method of claim 12, wherein the importing the spatial location information and the temporal information into an upper computer comprises:
and leading the identification information of the RFID card stored in the storage module and the current time corresponding to the identification information of the RFID card into the upper computer through auxiliary entry equipment.
14. The method of claim 11, wherein prior to the step of determining whether an RFID card is present within a predetermined range around the first card reader module, the method further comprises:
the first processor detects whether a storage module is available;
if the first processor detects that the storage module is available, the first processor detects whether the time of the plurality of distributed positioning devices is synchronized;
and if the first processor detects that the time of the plurality of distributed positioning devices is synchronized, counting the time of each distributed positioning device.
15. The method according to claim 12, wherein the upper computer performs fusion analysis on the spatial position information and the time information, and the fusion analysis includes:
the upper computer decodes the spatial position information and the time information to obtain a coordinate value of the monitored object under a preset spatial coordinate and time corresponding to the coordinate value;
and the upper computer determines a moving curve of the monitored object under a preset space coordinate according to the coordinate value of the monitored object under the preset space coordinate and the time corresponding to the coordinate value.
16. The method according to claim 10, wherein before the step of fusion parsing the spatial position information and the time information by the upper computer, the method further comprises:
the upper computer acquires identification information of all the RFID cards and position information corresponding to the identification information of the RFID cards;
and the upper computer constructs a preset space coordinate according to the identification information of all the RFID cards and the position information corresponding to the identification information of the RFID cards.
CN201910472283.2A 2019-05-31 2019-05-31 Motion information acquisition system and method Pending CN112007347A (en)

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