CN110716175A - Low-power-consumption indoor and outdoor positioning method and system based on NB-IOT communication - Google Patents
Low-power-consumption indoor and outdoor positioning method and system based on NB-IOT communication Download PDFInfo
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- CN110716175A CN110716175A CN201911045465.8A CN201911045465A CN110716175A CN 110716175 A CN110716175 A CN 110716175A CN 201911045465 A CN201911045465 A CN 201911045465A CN 110716175 A CN110716175 A CN 110716175A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0257—Hybrid positioning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/48—Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
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Abstract
The invention discloses a low-power-consumption indoor and outdoor positioning system based on NB-IOT communication and a positioning method thereof. The positioning product is positioned indoors by installing the anchor node indoors, positioning is carried out outdoors by adopting the GNSS, the signal strength of the Zigbee anchor node is used as a change-over switch of an indoor and outdoor positioning mode, the GNSS positioning system and the NB-IOT are integrated, the problem of inaccurate indoor positioning in the prior art is solved, and compared with GSM, NB-IOT communication has narrower frequency band, lower power consumption and long product standby time.
Description
Technical Field
The invention relates to the technical field of positioning, in particular to a low-power-consumption indoor and outdoor positioning method and system based on NB-IOT communication.
Background
NB-IOT: the narrowband internet of things supports cellular data connectivity of low-power devices over a wide area network, also known as a low-power wide area network (LPWAN). NB-IoT supports efficient connectivity for devices with long standby time and high requirements for network connectivity.
ZigBee: also called purple bee, is a wireless network protocol of low-speed short-distance transmission, and the bottom layer is a medium access layer and a physical layer which adopt IEEE802.15.4 standard specification. The method is mainly characterized by low speed, low power consumption, low cost, support of a large number of nodes on the network, support of various topologies on the network, low complexity, rapidness, reliability and safety.
The demand of the current market for positioning products is rapidly increased, and the products which have low power consumption and realize indoor and outdoor positioning better meet the actual demand of the market. The mainstream positioning products in the current market use GSM communication and GNSS positioning, and have the problems of high power consumption and inaccurate indoor positioning. With the development of the NB-IOT technology, the NB-IOT with low power consumption is more suitable for network communication of positioning products, and the requirement of the market on the positioning products can be better met by combining the low-power consumption zigbee close-range indoor positioning. GNSS: global navigation satellite system. Currently, GNSS includes GPS in the united states, GLONASS in russia, Compass (beidou) in china, and Galileo system in the european union.
Disclosure of Invention
The invention aims to provide a low-power-consumption indoor and outdoor positioning method and a low-power-consumption indoor and outdoor positioning system based on NB-IOT communication, which are used for solving the problems of high power consumption and inaccurate indoor positioning of the mainstream positioning products in the prior art, which use GSM communication and GNSS positioning.
The invention solves the problems through the following technical scheme:
a low-power consumption indoor and outdoor positioning method based on NB-IOT communication comprises the following steps:
step 1: the method comprises the steps that Zigbee anchor nodes are fixedly distributed indoors, each anchor node is respectively used as a coordinator node or a plurality of router nodes, a Zigbee module on a positioning target is used as a Zigbee terminal node, a Zigbee routing node and a terminal node are configured to be added into a coordinator, the anchor node position is selected on a monitoring APP of a monitoring terminal, and a corresponding MAC address is recorded;
step 2: when the monitoring target is not in the monitoring range, the Zigbee terminal node is monitored to be off-network, GNSS positioning is started, then the Zigbee terminal node periodically sends a rejoin request, when the positioning target enters the monitoring area again, the Zigbee terminal node rejoins the Zigbee network to start Zigbee positioning, and the Zigbee terminal node periodically sends a positioning instruction, receives indoor positioning data responded by the Zigbee anchor node and sends the indoor positioning data to the NB-IOT module;
and step 3: after the NB-IOT module receives the indoor positioning data, the indoor positioning data are sent to the cloud end and then sent to the monitoring terminal, and the monitoring terminal obtains the indoor positioning information by calculating Zigbee data and displays the indoor positioning information on the monitoring APP.
Preferably, the monitoring APP can issue configuration information and control instructions, and the monitoring APP controls the opening and closing of the indoor and outdoor positioning modules, including the indoor positioning device information and indoor positioning data sending period.
Preferably, the NB-IOT module is connected to the GNSS module and the Zigbee module through a UART, SPI, or IIC.
Preferably, the indoor positioning data comprises signal strength, and the NB-IOT sends the indoor positioning data to the monitoring APP after determining that the signal strength exceeds a set threshold, and turns off the GNSS outdoor positioning.
The system comprises an NB-IOT module serving as a system master control, a GNSS module, a Zigbee module, a monitoring terminal and Zigbee anchor nodes installed indoors, wherein the monitoring terminal is connected with the NB-IOT module through a network cloud, and the GNSS module and the Zigbee module are connected with the NB-IOT module through UART, SPI or IIC.
Preferably, the monitoring terminal is provided with a monitoring APP, the monitoring APP can issue configuration information and control instructions, and the monitoring APP controls the opening and closing of the indoor and outdoor positioning modules and comprises indoor positioning equipment information and an indoor positioning data sending period.
Preferably, the monitoring terminal obtains the position of the positioning target by the signal strength and the judgment of the position of the Zigbee parent anchor node.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the positioning product is positioned indoors by installing the anchor node indoors, positioning is carried out outdoors by adopting the GNSS, the signal strength of the Zigbee anchor node is used as a change-over switch of an indoor and outdoor positioning mode, a GNSS positioning system and the NB-IOT are well integrated, and the problem of inaccurate indoor positioning in the prior art is well solved.
(2) Compared with the GSM, the NB-IOT communication adopted by the invention has the advantages of narrower frequency band, lower power consumption, more energy saving, long standby time and long service time of the product.
Drawings
Fig. 1 is a schematic flow chart of a low-power consumption indoor and outdoor positioning method based on NB-IOT communication according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
referring to the attached drawing 1, a corresponding low-power consumption indoor and outdoor positioning system based on NB-IOT communication includes an NB-IOT module as a system master control, a GNSS module, a Zigbee module, a monitoring terminal, and a Zigbee anchor node installed indoors, where the monitoring terminal is connected to the NB-IOT module through a network cloud, and the GNSS module and the Zigbee module are connected to the NB-IOT module through UART, SPI, or IIC. Install the control APP on the monitor terminal, this control APP can issue configuration information and control command, including indoor positioning equipment information and indoor positioning data transmission cycle, control the opening and closing of indoor and outdoor positioning module, monitor terminal passes through signal strength and judges the position that Zigbee father anchor node position obtained the location target.
Based on the system, the low-power consumption indoor and outdoor positioning method based on NB-IOT communication comprises the following steps:
step 1: the method comprises the steps that Zigbee anchor nodes are fixedly distributed indoors, each anchor node is respectively used as a coordinator node or a plurality of router nodes, a Zigbee module on a positioning target is used as a Zigbee terminal node, a Zigbee routing node and a terminal node are configured to be added into a coordinator, the anchor node position is selected on a monitoring APP of a monitoring terminal, and a corresponding MAC address is recorded;
step 2: when the monitoring target is not in the monitoring range, the Zigbee terminal node is monitored to be off-network, GNSS positioning is started, then the Zigbee terminal node periodically sends a rejoin request, when the positioning target enters the monitoring area again, the Zigbee terminal node rejoins the Zigbee network to start Zigbee positioning, and the Zigbee terminal node periodically sends a positioning instruction, receives indoor positioning data responded by the Zigbee anchor node and sends the indoor positioning data to the NB-IOT module; the indoor positioning data comprise signal intensity, and the NB-IOT judges that the signal intensity value exceeds a set threshold value and then sends the indoor positioning data to the monitoring APP through the cloud network, and closes GNSS outdoor positioning;
and step 3: after the NB-IOT module receives the indoor positioning data, the indoor positioning data are sent to the cloud end and then sent to the monitoring terminal, the monitoring terminal obtains the information of the indoor positioning through calculating Zigbee data, the information is displayed on the monitoring APP, the APP can issue configuration information and control instructions, the period of sending the indoor positioning equipment information and the indoor positioning data is controlled, and the indoor and outdoor positioning modules are controlled to be opened and closed.
By implementing the method and the system, the specific functions of each module are implemented as follows:
the GNSS module realizes outdoor positioning, and the zigbee module realizes indoor positioning. When the positioning target is not indoors, the zigbee node is not connected with the indoor zigbee network, and sends off-network data to the NB-IOT, and the NB-IOT sends an instruction to the GNSS starting positioning. When a positioning target enters indoors, the zigbee node joins the zigbee network again, indoor positioning data (including signal strength) is sent to the NB-IOT, the NB-IOT judges that the signal strength value exceeds a set threshold value, then the indoor positioning data is sent to the monitoring APP, and GNSS outdoor positioning is turned off.
If the indoor use scene is a home room, the indoor scene is selected as the home room on the monitoring APP. A zigbee anchor node can be installed in each of a bedroom, a kitchen, a living room, a toilet, a balcony and the like, the zigbee positioning node sends positioning data (including a father node MAC address) to a monitoring APP through NB-IOT, and the monitoring APP calculates the position of the positioning node by judging the father node, the signal strength and the like.
And the NB-IOT is used as a main controller of the positioning system and is responsible for sending the received GNSS and zigbee positioning data to the monitoring APP, and when receiving the instruction for starting GNSS positioning sent by the zigbee module, sending a GNSS positioning starting command to the GNSS module. And when receiving a configuration and control instruction sent by the monitoring APP, sending a corresponding instruction to the GNSS and zigbee module.
The monitoring APP is installed on the mobile phone, can display current position information and check historical tracks, can select indoor scene setting, and corresponds to different indoor positioning node arrangements and positioning algorithms. The positioning parameter configuration and the positioning command of opening and closing can be sent. The monitoring APP may also contain other functions.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be preferred embodiments of the present invention, it is to be understood that the invention is not limited thereto, but is capable of numerous other modifications and embodiments, all of which will be apparent to those skilled in the art, and which will fall within the spirit and scope of the principles disclosed herein.
Claims (7)
1. A low-power consumption indoor and outdoor positioning method based on NB-IOT communication is characterized by comprising the following steps:
step 1: the method comprises the steps that Zigbee anchor nodes are fixedly distributed indoors, each anchor node is respectively used as a coordinator node or a plurality of router nodes, a Zigbee module on a positioning target is used as a Zigbee terminal node, a Zigbee routing node and a terminal node are configured to be added into a coordinator, the anchor node position is selected on a monitoring APP of a monitoring terminal, and a corresponding MAC address is recorded;
step 2: when the monitoring target is not in the monitoring range, the Zigbee terminal node is monitored to be off-network, GNSS positioning is started, then the Zigbee terminal node periodically sends a rejoin request, when the positioning target enters the monitoring area again, the Zigbee terminal node rejoins the Zigbee network to start Zigbee positioning, and the Zigbee terminal node periodically sends a positioning instruction, receives indoor positioning data responded by the Zigbee anchor node and sends the indoor positioning data to the NB-IOT module;
and step 3: after the NB-IOT module receives the indoor positioning data, the indoor positioning data are sent to the cloud end and then sent to the monitoring terminal, and the monitoring terminal obtains the indoor positioning information by calculating Zigbee data and displays the indoor positioning information on the monitoring APP.
2. The NB-IOT communication-based low-power consumption indoor and outdoor positioning method as claimed in claim 1, wherein the monitoring APP is capable of issuing configuration information and control commands, including indoor positioning device information and indoor positioning data transmission periods, to control the switching on and off of indoor and outdoor positioning modules.
3. The NB-IOT communication-based low-power indoor-outdoor positioning method of claim 1, wherein the NB-IOT module is connected with the GNSS module and the Zigbee module through UART, SPI or IIC.
4. The NB-IOT communication-based low-power consumption indoor-outdoor positioning method of claim 1, wherein the indoor positioning data comprises signal strength, and the NB-IOT determines that the signal strength exceeds a set threshold and sends the indoor positioning data to the monitoring APP, and turns off GNSS outdoor positioning.
5. A low-power consumption indoor and outdoor positioning system based on NB-IOT communication is characterized in that: the system comprises an NB-IOT module serving as a system master control, a GNSS module, a Zigbee module, a monitoring terminal and Zigbee anchor nodes, wherein the GNSS module, the Zigbee module and the monitoring terminal are connected with the NB-IOT module, and the Zigbee module are installed indoors.
6. A low power consumption indoor and outdoor positioning system based on NB-IOT communication according to claim 5, wherein: the monitoring terminal is provided with a monitoring APP, the monitoring APP can issue configuration information and control instructions, and the monitoring APP controls the opening and closing of the indoor and outdoor positioning modules and comprises indoor positioning equipment information and an indoor positioning data sending period.
7. A low power consumption indoor and outdoor positioning system based on NB-IOT communication according to claim 6, wherein: and the monitoring terminal obtains the position of the positioning target by judging the position of the Zigbee parent anchor node according to the signal strength.
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