CN111031480A - Equipment management and area monitoring method based on Bluetooth gateway - Google Patents
Equipment management and area monitoring method based on Bluetooth gateway Download PDFInfo
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- CN111031480A CN111031480A CN201911176688.8A CN201911176688A CN111031480A CN 111031480 A CN111031480 A CN 111031480A CN 201911176688 A CN201911176688 A CN 201911176688A CN 111031480 A CN111031480 A CN 111031480A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
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Abstract
The invention discloses a device management and area monitoring method based on a Bluetooth gateway, which is characterized by comprising the following steps: s1, configuration stage: configuring information for the purchased Bluetooth equipment; s2, mounting: the method comprises the steps of installing Bluetooth equipment and installing a Bluetooth gateway; the Bluetooth gateway is arranged to cover all Bluetooth devices and can be networked; s3, operation stage: the method comprises the steps of configuration use and data report of a Bluetooth gateway; and managing the Bluetooth equipment through the Bluetooth gateway, and monitoring the area through the Bluetooth gateway. Based on the concept of the Internet of things, the Bluetooth equipment is efficiently managed, the normal operation of an indoor positioning system can be ensured, the Bluetooth equipment can be scanned in real time by utilizing the Bluetooth gateway, the positioning of the Bluetooth equipment is realized, and the applications of area monitoring, abnormal detection, fixed asset tracking and the like are realized on the basis; and the characteristics of the Bluetooth gateway are fully utilized, and multiple purposes such as regional monitoring are realized.
Description
Technical Field
The invention belongs to the field of indoor positioning, and particularly relates to a device management and area monitoring method based on a Bluetooth gateway.
Background
In the indoor positioning system based on the bluetooth beacon, in order to ensure the operation of the indoor positioning system, a large number of bluetooth devices (mainly bluetooth beacons) need to be arranged. The positioning effect of the bluetooth positioning system depends on the signal of the bluetooth beacon, so the operation condition of the bluetooth beacon is very important for the indoor positioning system.
Because bluetooth equipment can not network, can't directly acquire operating conditions such as its electric quantity. Most of the existing methods use manual inspection app to perform periodic inspection, and normal operation of the Bluetooth beacon is guaranteed. This method often requires high labor costs.
Therefore, it is necessary to develop an efficient management system for bluetooth devices.
Disclosure of Invention
Aiming at least one of the defects or the improvement requirements in the prior art, the invention provides an equipment management and area monitoring method based on a Bluetooth gateway, which is based on the concept of the Internet of things, realizes the efficient management of Bluetooth equipment, can ensure the normal operation of an indoor positioning system, can also utilize the Bluetooth gateway to scan the Bluetooth equipment in real time, realizes the positioning of the Bluetooth equipment, and realizes the applications of area monitoring, abnormal detection, fixed asset tracking and the like on the basis.
To achieve the above object, according to an aspect of the present invention, there is provided a bluetooth gateway-based device management and area monitoring method, including the steps of:
s1, configuration stage:
performing information configuration on the purchased Bluetooth equipment, wherein the information configuration comprises parameter configuration and equipment differentiation;
s2, mounting:
the method comprises the steps of installing Bluetooth equipment and installing a Bluetooth gateway;
the Bluetooth gateway is arranged to cover all Bluetooth devices and can be networked;
s3, operation stage:
the method comprises the steps of configuration use and data report of a Bluetooth gateway;
bluetooth device management is carried out through the Bluetooth gateway: counting data of a plurality of Bluetooth devices reported by a plurality of Bluetooth gateways, and if the electric quantity information is less than an electric quantity threshold value, warning and displaying the electric quantity information; if the electric quantity information is larger than the electric quantity threshold value, normal operation display is carried out on the electric quantity information;
regional monitoring is carried out through the Bluetooth gateway: counting data of the same Bluetooth device reported by a plurality of Bluetooth gateways to obtain distances from the same Bluetooth device to a plurality of adjacent Bluetooth gateways, and if each obtained distance is smaller than a distance threshold, judging that the distance is in a monitoring area of the Bluetooth gateway; if at least one obtained distance is greater than the distance threshold, judging that the distance is in a monitoring area of the Bluetooth gateway; and then monitors the entering or leaving Bluetooth equipment.
Preferably, in step S1, the parameters are configured to:
and configuring parameters including transmission power, major parameters, minor parameters, electric quantity and transmission intervals of the Bluetooth equipment by using the SDK or APP provided by a manufacturer.
Preferably, in step S1, the device is divided into:
and sticking a paster written with distinguishing information to each Bluetooth device.
Preferably, in step S2, the installation method of the bluetooth device is:
for a positioning monitoring area, an installation plan is made according to the principle that the coverage area is the largest and the signal characteristics are more obvious, the specific position of installation is determined, and different Bluetooth devices are marked.
Preferably, in step S2, an indoor map of the location-monitored area is drawn, and then an installation plan is created.
Preferably, in step S2, the installation method of the bluetooth gateway is:
firstly, sequentially arranging three Bluetooth gateways at a preset distance outside the center of a positioning monitoring area to form a triangle; and then a plurality of Bluetooth gateways are expanded outwards, wherein every three adjacent Bluetooth gateways form a triangle.
Preferably, in step S2, when the bluetooth gateway is installed, if the radiation range is wider as the transmission power of the bluetooth device is higher, the number of bluetooth gateway installations is reduced, and vice versa.
Preferably, in step S3,
the configuration and use method of the Bluetooth gateway comprises the following steps: directly configuring the Bluetooth gateway by referring to a specification provided by a manufacturer and a corresponding APP;
the data reporting method of the Bluetooth gateway comprises the following steps: configuring the reporting service of the bluetooth gateway arranged in the step S2, setting the reporting service as the MQTT address of the server, configuring the reporting time, designating the data format as the JSON format, setting the reported data containing the data of all the bluetooth devices in the scanning range as the JSON array format, and uploading all the data at one time.
Preferably, in step S3, the method for performing bluetooth device management through a bluetooth gateway specifically includes:
counting data of a plurality of Bluetooth devices reported by a plurality of Bluetooth gateways, analyzing and reading the data, acquiring unique identification codes of the scanned Bluetooth devices, extracting corresponding parameters reported by the Bluetooth devices in step S1, screening and displaying minor parameters and electric quantity information one by one, and if the electric quantity information is less than an electric quantity threshold, warning and displaying the minor parameters and the electric quantity information; and if the electric quantity information is larger than the electric quantity threshold value, displaying the electric quantity information in normal operation.
Preferably, in step S3, the method for performing area monitoring through the bluetooth gateway specifically includes:
three Bluetooth gateways form a triangular area and are recorded as D, the gateways continuously scan signals emitted by surrounding Bluetooth equipment, the intensity of the Bluetooth signals received by the Bluetooth gateways is rssi, and the three Bluetooth gateways form a triangular area and are used for scanning the signals emitted by the surrounding Bluetooth equipment according to the following formula
Wherein A is a proportionality coefficient, tx is a signal intensity measured at one meter of the Bluetooth device, B is an environment attenuation coefficient, and C is an error;
the distances from the Bluetooth equipment to the three closest Bluetooth gateways are taken, and the distances are integrated into { dis1，dis2，dis3}；
If { dis1，dis2，dis3Judging that the Bluetooth gateway is in a monitoring area of the Bluetooth gateway if the distance is less than the threshold value;
if { dis1，dis2，dis3Judging that at least one distance is greater than a distance threshold value, and determining that the distance is in a monitoring area of the Bluetooth gateway;
when the bluetooth device configured in step S1 enters or leaves the monitoring area of the bluetooth gateway, i.e., the area D, the background server prompts in real time the name of the bluetooth device entering or leaving, thereby implementing area monitoring.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the Bluetooth gateway-based equipment management and area monitoring method disclosed by the invention is based on the concept of the Internet of things, realizes efficient management of Bluetooth equipment, can ensure the normal operation of an indoor positioning system, can also realize the positioning of the Bluetooth equipment by utilizing the real-time scanning of the Bluetooth equipment by utilizing the Bluetooth gateway, and realizes the applications of area monitoring, abnormal detection, fixed asset tracking and the like on the basis.
2. The equipment management and area monitoring method based on the Bluetooth gateway makes up the defect that a large amount of labor cost needs to be consumed in the traditional manual inspection scheme, and compared with the prior art, the method makes full use of the characteristics of the Bluetooth gateway and realizes multiple purposes such as area monitoring and the like.
Drawings
Fig. 1 is a schematic diagram of a bluetooth device installation of a bluetooth gateway-based device management and area monitoring method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a bluetooth gateway arrangement of a bluetooth gateway-based device management and area monitoring method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the transmission power of the bluetooth device in the bluetooth gateway-based device management and area monitoring method according to the embodiment of the present invention;
fig. 4 is a schematic diagram of a bluetooth gateway connection of a bluetooth gateway-based device management and area monitoring method according to an embodiment of the present invention;
fig. 5 is a device management diagram of a bluetooth gateway-based device management and area monitoring method according to an embodiment of the present invention;
fig. 6 is a device management operation effect diagram of a device management and area monitoring method based on a bluetooth gateway according to an embodiment of the present invention;
fig. 7 is a schematic diagram of area monitoring of a method for device management and area monitoring based on a bluetooth gateway according to an embodiment of the present invention.
In the figure 1, the mini beacon is a Bluetooth beacon, and the number is the equipment number; the circled numbers in fig. 6 are also device numbers.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
The invention provides a device management and area monitoring method based on a Bluetooth gateway, which is explained in three stages of configuration, installation and operation.
< configuration stage >
The configuration stage of the invention mainly refers to the information configuration of the purchased bluetooth device (mainly bluetooth beacon), and comprises the following steps of parameter configuration and device differentiation:
parameter configuration: the SDK or APP provided by a manufacturer is mainly utilized to configure parameters such as the transmitting power, major, minor, electric quantity and transmitting interval.
Equipment distinguishing: mainly distinguish different equipment in reality, to every equipment paste write on minor or other sticker of distinguishing information can.
< installation stage >
The installation phase of the invention comprises the installation of the Bluetooth equipment and the installation of the Bluetooth gateway.
The installation of bluetooth equipment mainly guarantees positioning system's stable high-efficient operation. Regarding the positioning area, considering that the coverage area is the largest and the signal characteristics are more obvious, an installation plan is made, and the specific location of installation is determined, and different bluetooth devices are marked, as shown in fig. 1.
Therefore, when the bluetooth device is arranged, the indoor map is drawn to be arranged accurately.
The deployment of a bluetooth gateway must ensure that it covers all bluetooth devices. The bluetooth gateway also manages the bluetooth devices by receiving signals transmitted by the bluetooth devices, but in the indoor positioning system, in order to ensure the difference of signals at each position of the positioning area, the transmission power (related to the signal strength) of the bluetooth devices needs to be adjusted on the spot, so the bluetooth gateway needs to ensure the management of all bluetooth devices in the area, and in consideration of the balance between the cost of the bluetooth gateway devices and the positioning accuracy, the number of the bluetooth gateway arrangement methods needs to be repeatedly tested, and a scheme which can be accepted is adopted for different transmission powers and bluetooth positioning accuracies of the bluetooth devices. In the present invention, as shown in fig. 2, the bluetooth gateway corresponds to different transmission powers of the bluetooth devices, which corresponds to fig. 3.
Therefore, the arrangement of the bluetooth gateway also relates to the transmission power and the bluetooth positioning precision of the bluetooth device, and multiple times of debugging and verification are required. In the invention, as shown in fig. 2, after the bluetooth beacons are uniformly arranged according to fig. 1, three bluetooth gateways are arranged in the area at a distance of 9m from the center of the area in sequence to form a triangle, preferably an equilateral triangle; and then a plurality of Bluetooth gateways are expanded outwards, wherein every three adjacent Bluetooth gateways form a triangle, and at least part of the triangle is an equilateral triangle. The invention can cover all blue tooth devices and monitor the operation condition. Furthermore, the higher the transmission power of the Bluetooth device, the wider the radiation range, the reduced the number of Bluetooth gateway layouts and vice versa.
< operating phase >
In the operation stage of the bluetooth device, in order to ensure that the device with abnormal operation (power failure and other conditions) is found in time, a certain number of bluetooth gateways must be arranged to monitor the bluetooth device in real time (networking can be performed, and data is reported regularly).
The operation stage mainly refers to the configuration and use and data report of the Bluetooth gateway. The bluetooth gateway can be configured by directly referring to the specification provided by the manufacturer and the corresponding APP.
Data reporting of the bluetooth gateway mainly has two modes:
1. and based on the mode of an HTTP server, regularly sending a post request to the HTTP server, and periodically reporting the scanning result.
2. Based on the mode of the MQTT server, the method supports the timed uploading of data and the control of remote commands.
The invention realizes the second scheme based on the MQTT server for more conveniently managing the Bluetooth equipment. The bluetooth gateway and the server are connected through a network (both wired and wireless), as shown in fig. 4.
Configuring the gateway arranged in 2.2 with a reporting service, setting the gateway as an MQTT address of a server, configuring reporting time, configuring the gateway to report data once in 30s, designating the data format as a JSON format, wherein the reported data comprises data of all Bluetooth devices in a scanning range, and uploading all the data at one time, so that the data format set as a JSON array is defined as the following table 1.
TABLE 1 Bluetooth device data definition Table
| timestap | Time stamp |
| type | Bluetooth device type |
| mac | Mac address |
| bleName | Bluetooth device name |
| ibeaconUuid | Bluetooth device uuid |
| ibeaconMajor | Bluetooth device master classification value |
| ibeaconMinor | Sub-class value of Bluetooth device |
| ibeaconTxPower | Blue tooth equipment transmitting power |
| rssi | Signal strength |
| battery | Electric quantity |
The ibeaconMinor information is minor information set in the configuration stage, battery is power information of the device, rssi is signal strength of the bluetooth device received by the bluetooth base station, and ibeaconTxPower is signal strength of the bluetooth device at one meter.
< device management based on Bluetooth gateway >
The device management method provided by the invention is a method for scanning the Bluetooth device through the Bluetooth gateway by using the Internet of things based on the data, reporting the data of the Bluetooth device to the server in time, and managing the Bluetooth device in real time by using the device management service constructed by the invention, as shown in fig. 5.
In the invention, the device management service is constructed, data of a plurality of devices reported by a plurality of gateways are counted, the data are analyzed and read, the unique identification code of the scanned Bluetooth device is obtained, the corresponding attribute information reported by the gateway is extracted, minor and battery information are screened and displayed one by one, if the battery information is less than a threshold value 10, red warning display is carried out, if the battery information is greater than the threshold value 10, green electric quantity information is displayed, and a main operation effect graph is shown as fig. 6.
< area monitoring based on Bluetooth gateway >
The invention provides a regional monitoring method based on a Bluetooth gateway, which is used for realizing regional monitoring application based on the Bluetooth gateway on the basis of receiving uploaded Bluetooth equipment data in an operation stage.
The specific implementation principle is shown in fig. 7.
Three Bluetooth gateways form a triangular area and are recorded as D, the gateways continuously scan signals emitted by surrounding Bluetooth equipment, the intensity of the Bluetooth signals received by the Bluetooth gateways is rssi, and the three Bluetooth gateways form a triangular area and are used for scanning the signals emitted by the surrounding Bluetooth equipment according to the following formula
Wherein A is a proportional coefficient, 0.89976 is actually measured, tx is the signal intensity measured at one meter of the Bluetooth equipment, B is an environmental attenuation coefficient, 7.7095 is measured, C is an error, and the value measured in the invention is 0.111. Therefore, the distance from the Bluetooth device to any gateway can be measured through the formula. In the invention, the distances from the Bluetooth equipment to the three closest gateways are taken, and the distance set { dis) is set according to the distances from the Bluetooth equipment to the three gateways1，dis2，dis3Judging whether the three gateways form a triangle or notIn zone D, to monitor whether bluetooth devices are entering, leaving, etc. There are many ways to determine the point inside the triangle using the above data, and compared with the general complicated calculation, the present invention adopts a simplified method:
the common Bluetooth gateways are uniformly arranged, and the distance between every two Bluetooth gateways is set to be 10m in the invention;
if { dis1，dis2，dis3Judging that the Bluetooth gateway is in a monitoring area of the Bluetooth gateway if the distance is less than the threshold value;
if { dis1，dis2，dis3Judging that at least one distance is greater than a distance threshold value, and determining that the distance is in a monitoring area of the Bluetooth gateway;
when the configured Bluetooth equipment enters or leaves a monitoring area of the Bluetooth gateway, namely a D area, the background server prompts in real time and names of the entering or leaving Bluetooth equipment, so that the function of area monitoring with low cost and high efficiency is realized, and the function of fixed asset monitoring can also be realized by configuring the corresponding Bluetooth equipment on the fixed asset.
In summary, the present invention has the following outstanding advantages:
the Bluetooth gateway-based equipment management and area monitoring method disclosed by the invention is based on the concept of the Internet of things, realizes efficient management of Bluetooth equipment, can ensure the normal operation of an indoor positioning system, can also realize the positioning of the Bluetooth equipment by utilizing the real-time scanning of the Bluetooth equipment by utilizing the Bluetooth gateway, and realizes the applications of area monitoring, abnormal detection, fixed asset tracking and the like on the basis. The equipment management and area monitoring method based on the Bluetooth gateway makes up the defect that a large amount of labor cost needs to be consumed in the traditional manual inspection scheme, and compared with the prior art, the method makes full use of the characteristics of the Bluetooth gateway and realizes multiple purposes such as area monitoring and the like.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A device management and area monitoring method based on a Bluetooth gateway is characterized by comprising the following steps:
s1, configuration stage:
performing information configuration on the purchased Bluetooth equipment, wherein the information configuration comprises parameter configuration and equipment differentiation;
s2, mounting:
the method comprises the steps of installing Bluetooth equipment and installing a Bluetooth gateway;
the Bluetooth gateway is arranged to cover all Bluetooth devices and can be networked;
s3, operation stage:
the method comprises the steps of configuration use and data report of a Bluetooth gateway;
bluetooth device management is carried out through the Bluetooth gateway: counting data of a plurality of Bluetooth devices reported by a plurality of Bluetooth gateways, and if the electric quantity information is less than an electric quantity threshold value, warning and displaying the electric quantity information; if the electric quantity information is larger than the electric quantity threshold value, normal operation display is carried out on the electric quantity information;
regional monitoring is carried out through the Bluetooth gateway: counting data of the same Bluetooth device reported by a plurality of Bluetooth gateways to obtain distances from the same Bluetooth device to a plurality of adjacent Bluetooth gateways, and if each obtained distance is smaller than a distance threshold, judging that the distance is in a monitoring area of the Bluetooth gateway; if at least one obtained distance is greater than the distance threshold, judging that the distance is in a monitoring area of the Bluetooth gateway; and then monitors the entering or leaving Bluetooth equipment.
2. The bluetooth gateway-based device management and area monitoring method of claim 1, wherein:
in step S1, the parameters are configured to:
and configuring parameters including transmission power, major parameters, minor parameters, electric quantity and transmission intervals of the Bluetooth equipment by using the SDK or APP provided by a manufacturer.
3. The bluetooth gateway-based device management and area monitoring method of claim 2, wherein:
in step S1, the device is divided into:
and sticking a paster written with distinguishing information to each Bluetooth device.
4. The bluetooth gateway-based device management and area monitoring method of claim 3, wherein:
in step S2, the method for installing the bluetooth device includes:
for a positioning monitoring area, an installation plan is made according to the principle that the coverage area is the largest and the signal characteristics are more obvious, the specific position of installation is determined, and different Bluetooth devices are marked.
5. The bluetooth gateway-based device management and area monitoring method of claim 4, wherein:
in step S2, an indoor map of the location-monitored area is drawn, and then an installation plan is created.
6. The bluetooth gateway-based device management and area monitoring method according to claim 4 or 5, wherein:
in step S2, the installation method of the bluetooth gateway is:
firstly, sequentially arranging three Bluetooth gateways at a preset distance outside the center of a positioning monitoring area to form a triangle; and then a plurality of Bluetooth gateways are expanded outwards, wherein every three adjacent Bluetooth gateways form a triangle.
7. The bluetooth gateway-based device management and area monitoring method of claim 6, wherein:
in step S2, when the bluetooth gateway is installed, if the transmission power of the bluetooth device is higher and the radiation range is wider, the number of bluetooth gateways to be laid is reduced, and vice versa.
8. The bluetooth gateway-based device management and area monitoring method of claim 6, wherein:
in the step S3, in the step S,
the configuration and use method of the Bluetooth gateway comprises the following steps: directly configuring the Bluetooth gateway by referring to a specification provided by a manufacturer and a corresponding APP;
the data reporting method of the Bluetooth gateway comprises the following steps: configuring the reporting service of the bluetooth gateway arranged in the step S2, setting the reporting service as the MQTT address of the server, configuring the reporting time, designating the data format as the JSON format, setting the reported data containing the data of all the bluetooth devices in the scanning range as the JSON array format, and uploading all the data at one time.
9. The bluetooth gateway-based device management and area monitoring method of claim 8, wherein:
in step S3, the method for managing the bluetooth device through the bluetooth gateway specifically includes:
counting data of a plurality of Bluetooth devices reported by a plurality of Bluetooth gateways, analyzing and reading the data, acquiring unique identification codes of the scanned Bluetooth devices, extracting corresponding parameters reported by the Bluetooth devices in step S1, screening and displaying minor parameters and electric quantity information one by one, and if the electric quantity information is less than an electric quantity threshold, warning and displaying the minor parameters and the electric quantity information; and if the electric quantity information is larger than the electric quantity threshold value, displaying the electric quantity information in normal operation.
10. The bluetooth gateway-based device management and area monitoring method of claim 8, wherein:
in step S3, the method for performing area monitoring through the bluetooth gateway specifically includes:
three Bluetooth gateways form a triangular area and are recorded as D, the gateways continuously scan signals emitted by surrounding Bluetooth equipment, the intensity of the Bluetooth signals received by the Bluetooth gateways is rssi, and the three Bluetooth gateways form a triangular area and are used for scanning the signals emitted by the surrounding Bluetooth equipment according to the following formula
Wherein A is a proportionality coefficient, tx is a signal intensity measured at one meter of the Bluetooth device, B is an environment attenuation coefficient, and C is an error;
the distances from the Bluetooth equipment to the three closest Bluetooth gateways are taken, and the distances are integrated into { dis1，dis2，dis3}；
If { dis1，dis2，dis3Judging that the Bluetooth gateway is in a monitoring area of the Bluetooth gateway if the distance is less than the threshold value;
if { dis1，dis2，dis3Judging that at least one distance is greater than a distance threshold value, and determining that the distance is in a monitoring area of the Bluetooth gateway;
when the bluetooth device configured in step S1 enters or leaves the monitoring area of the bluetooth gateway, i.e., the area D, the background server prompts in real time the name of the bluetooth device entering or leaving, thereby implementing area monitoring.
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Application publication date: 20200417 |