CN116233746A - Engineering management system based on IOT technology - Google Patents

Engineering management system based on IOT technology Download PDF

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CN116233746A
CN116233746A CN202310208013.7A CN202310208013A CN116233746A CN 116233746 A CN116233746 A CN 116233746A CN 202310208013 A CN202310208013 A CN 202310208013A CN 116233746 A CN116233746 A CN 116233746A
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message
wireless sensor
sensor node
terminal unit
gateway device
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沈存莉
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Chongqing Industry & Trade Polytechnic
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Chongqing Industry & Trade Polytechnic
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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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0261—System arrangements wherein the object is to detect trespassing over a fixed physical boundary, e.g. the end of a garden
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y10/00—Economic sectors
    • G16Y10/30—Construction
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y20/00—Information sensed or collected by the things
    • G16Y20/10—Information sensed or collected by the things relating to the environment, e.g. temperature; relating to location
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y20/00—Information sensed or collected by the things
    • G16Y20/40—Information sensed or collected by the things relating to personal data, e.g. biometric data, records or preferences
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y40/00—IoT characterised by the purpose of the information processing
    • G16Y40/10—Detection; Monitoring
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y40/00—IoT characterised by the purpose of the information processing
    • G16Y40/50—Safety; Security of things, users, data or systems
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y40/00—IoT characterised by the purpose of the information processing
    • G16Y40/60—Positioning; Navigation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The invention belongs to the field of engineering management, and discloses an engineering management system based on an IOT technology, which comprises a positioning module and a management module; the positioning module comprises a communication unit and a terminal unit; the terminal unit is carried by workers, and the communication unit comprises a gateway device wireless sensor node; the terminal unit is used for sending a first message for positioning to the wireless sensor node; the wireless sensor node is used for transmitting a first message to the gateway device; the gateway device is used for transmitting the first message to the management module; the management module is used for judging whether to send a second message for carrying out danger early warning on workers to the gateway equipment according to the first message meter; the gateway device is used for sending the second message to the wireless sensor node, and the wireless sensor node is used for transmitting the second message to the terminal unit; the terminal unit is used for sending out an early warning prompt to the worker after receiving the second message. The indoor positioning and danger early warning management of workers in the building engineering management process are realized.

Description

Engineering management system based on IOT technology
Technical Field
The invention relates to the field of engineering management, in particular to an engineering management system based on an IOT technology.
Background
The IOT technology, namely the Internet of things technology, refers to the technology that any object is connected to a network through information sensing equipment according to a contracted protocol, and the object exchanges and communicates information through an information transmission medium, so that intelligent identification, positioning, tracking and supervision are realized.
In the process of building engineering construction, comprehensive management of workers, materials, equipment and the like is often required. The management of workers comprises attendance management, danger early warning management and the like. The danger early warning management is mainly used for avoiding the situation that workers enter a danger construction area to cause safety accidents, the positions of the workers are required to be positioned in real time, the positioning system in the existing engineering management system is generally positioned through equipment such as a GPS (global positioning system), however, the GPS can only be used outdoors without shielding, and cannot be used indoors, so that the existing engineering management system has defects in the aspect of danger early warning management of the workers.
Disclosure of Invention
The invention aims to disclose an engineering management system based on the IOT technology, which solves the problem of how to perform dangerous early warning management on workers positioned indoors in the process of building engineering management.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an engineering management system based on an IOT technology comprises a positioning module and a management module;
the positioning module comprises a communication unit and a terminal unit;
the terminal unit is carried by a worker, and the communication unit comprises a gateway device and a plurality of wireless sensor nodes arranged in a positioning area;
the terminal unit is used for communicating with the wireless sensor node and sending a first message for positioning to the wireless sensor node;
the wireless sensor node is used for transmitting a first message to the gateway device;
the gateway device is used for transmitting the first message to the management module;
the management module is used for calculating the position coordinates of the workers according to the first message, judging whether the position coordinates are in a preset danger early warning area or not, and if yes, sending a second message for carrying out danger early warning on the workers to the gateway equipment;
the gateway device is used for sending the second message to the wireless sensor node, and the wireless sensor node is used for transmitting the second message to the terminal unit;
the terminal unit is used for sending out an early warning prompt to the worker after receiving the second message.
Preferably, the positioning area includes an indoor area and an outdoor area.
Preferably, in the positioning area, at least one other wireless sensor node exists within the communication range of any one wireless sensor node.
Preferably, the method further comprises the steps of communicating with a wireless sensor node, sending a first message for positioning to the wireless sensor node, including:
the terminal unit sends handshake messages to all wireless sensor nodes in the communication range of the terminal unit;
the wireless sensor node which receives the handshake message sends a response message to the terminal unit;
the terminal unit selects a communication target according to the response message and sends a first message for positioning to the communication target.
Preferably, the number of communication targets is 3.
Preferably, calculating the position coordinates of the worker from the first message includes:
after receiving the first message forwarded by the communication target, the management module calculates the position coordinates of the worker in a triangular positioning mode.
Preferably, transmitting the first message to the gateway device comprises:
after receiving the first message, the wireless sensor node judges whether the gateway device is in the communication range of the wireless sensor node or not, if so, the wireless sensor node directly sends the first message to the gateway device, and if not, a forwarding target is selected in the communication range of the wireless sensor node, and the first message is sent to the forwarding target.
Preferably, send out early warning suggestion to the workman, include:
and sending out an early warning prompt to a worker in a mode of playing the warning prompt record.
According to the invention, the plurality of wireless sensor nodes are arranged in the positioning area, and the wireless sensor nodes can communicate with each other, so that the first message sent by the terminal unit is transmitted to the management module indoors, and the management module can judge whether a worker needs to be prompted according to the first message, so that the indoor positioning and danger early warning management of the worker in the building engineering management process are realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of an engineering management system based on IOT technology according to the present invention.
Fig. 2 is a schematic diagram of the present invention for transmitting a first message for positioning to a wireless sensor node.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. In addition, the embodiments of the present invention and the features in the embodiments may be combined with each other without collision. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than within the scope of the description, and the scope of the invention is therefore not limited to the specific embodiments disclosed below.
The invention provides an engineering management system based on the IOT technology, which is shown in an embodiment of FIG. 1 and comprises a positioning module and a management module;
the positioning module comprises a communication unit and a terminal unit;
the terminal unit is carried by a worker, and the communication unit comprises a gateway device and a plurality of wireless sensor nodes arranged in a positioning area;
the terminal unit is used for communicating with the wireless sensor node and sending a first message for positioning to the wireless sensor node;
the wireless sensor node is used for transmitting a first message to the gateway device;
the gateway device is used for transmitting the first message to the management module;
the management module is used for calculating the position coordinates of the workers according to the first message, judging whether the position coordinates are in a preset danger early warning area or not, and if yes, sending a second message for carrying out danger early warning on the workers to the gateway equipment;
the gateway device is used for sending the second message to the wireless sensor node, and the wireless sensor node is used for transmitting the second message to the terminal unit;
the terminal unit is used for sending out an early warning prompt to the worker after receiving the second message.
According to the invention, the plurality of wireless sensor nodes are arranged in the positioning area, and the wireless sensor nodes can communicate with each other, so that the first message sent by the terminal unit is transmitted to the management module indoors, and the management module can judge whether a worker needs to be prompted according to the first message, so that the indoor positioning and danger early warning management of the worker in the building engineering management process are realized.
Preferably, the positioning area includes an indoor area and an outdoor area.
In the invention, the outdoor area also uniformly uses the wireless sensor nodes to position workers, so that a set of positioning system based on the satellite positioning principle can be avoided being additionally arranged, and the indoor and outdoor areas can be uniformly managed.
Preferably, in the positioning area, at least one other wireless sensor node exists within the communication range of any one wireless sensor node.
In particular, in order to avoid the situation that the wireless sensor nodes cannot forward messages, the wireless sensor node positioning method and device ensure that the distance between any two adjacent wireless sensor nodes is smaller than the maximum communication radius of the wireless sensor nodes when the wireless sensor nodes are placed.
Preferably, as shown in fig. 2, communicating with a wireless sensor node, sending a first message for positioning to the wireless sensor node, including:
the terminal unit sends handshake messages to all wireless sensor nodes in the communication range of the terminal unit;
the wireless sensor node which receives the handshake message sends a response message to the terminal unit;
the terminal unit selects a communication target according to the response message and sends a first message for positioning to the communication target.
Specifically, the communication between the wireless sensor node and the terminal unit is not a flooded communication, but is a communication with a communication destination after a communication destination is selected based on a handshake message and a response message. The invention can reduce the total forwarding amount of the first message in the process of transmitting the first message to the gateway device, and the first message is used for positioning and does not need too much quantity as long as the positioning requirement can be met, so the invention can effectively realize the communication pressure of the communication network formed by the wireless sensor nodes.
Preferably, the handshake message is sent with all wireless sensor nodes within communication range of itself, including:
the terminal unit calculates the intersection S of the wireless sensor nodes corresponding to the response messages received by the adjacent two rounds;
calculating an adaptive transmission period based on the intersection S;
and sending handshake messages to all wireless sensor nodes in the self communication range based on the adaptive sending period.
Specifically, the first Q times of the handshake message are sent with a fixed period, but after the number of times is greater than Q, the adaptive sending period is calculated by the previous response message, and the response message is sent with the adaptive sending period. Since the communication target is generally not changed if the states of the wireless sensor nodes within the communication range of the terminal unit and the terminal unit are not changed basically, the setting can save the electric quantity of the terminal unit.
Preferably, calculating the intersection S of the corresponding wireless sensor nodes of the response messages received twice, includes:
when the p-th round receives the response messages, the IDs of the wireless sensor nodes corresponding to all the response messages are stored in the set recv p ；
When the p+1st round receives the response messages, the IDs of the wireless sensor nodes corresponding to all the response messages are stored in the set recv p+1 ；
The computation function of the intersection S is:
S＝recv p ∩recv p+1 。
specifically, after each time the wireless sensor node sends a handshake message, the wireless sensor node receives a response message within a time period set from the sending time of the handshake message, and because the distances between the wireless sensor node and the terminal unit are inconsistent, the time when the response message is received may also be inconsistent. All response messages received in the time period are taken as all response messages which can be received by the round.
Preferably, the response message includes an ID of the wireless sensor node, coordinates of the wireless sensor node, a neighbor node table of the wireless sensor node, and a current power percentage of the wireless sensor node.
Wherein the neighbor node table includes coordinates and IDs of neighbor nodes within communication range of the wireless sensor node.
Preferably, calculating the adaptive transmission period based on the intersection S includes:
for the ith adaptive transmission period, the calculation process is as follows:
calculating a state parameter stapar corresponding to the i-1 th adaptive transmission period i-1 ；
If stapar i-1 And if the self-adaptive transmission period is smaller than or equal to the set change comparison value, the self-adaptive transmission period is calculated as the following function:
Figure BDA0004111650710000051
if stapar i-1 If the self-adaptive transmission period is larger than the set change comparison value, the self-adaptive transmission period is calculated as the following function:
Figure BDA0004111650710000052
wherein, adatr i And adaitr i-1 Respectively representing the ith and the (i-1) th self-adaptive transmission periods, wherein staparst is a set state parameter contrast value, fixdur is a set duration, the self-adaptive transmission periods have the limitation of maximum value and minimum value, and when adatr i When the adaptive transmission period is larger than the maximum value of the adaptive transmission period, the maximum value of the adaptive transmission period is taken as adatr i When adatr is a value of i When the adaptive transmission period is smaller than the minimum value of the adaptive transmission period, the minimum value of the adaptive transmission period is taken as adaitr i Is a value of (2).
The adaptive transmission period computationally references the data contained in the response messages received in the last two rounds. Specifically, if the state parameter is smaller, the state change of the wireless sensor node in the communication range of the terminal unit is smaller, and the position change of the terminal unit is also not larger, so that the adaptive transmission period is increased, the frequency of sending handshake messages is reduced, the frequency of sending first messages is reduced, and the purposes of saving the electric quantity of the terminal unit and reducing the overall data transmission pressure of the wireless sensor node are achieved. In addition, when the adaptive transmission period is calculated, if the state parameter value is relatively large and is larger than the change comparison value, the reduction amplitude of the adaptive transmission period is also increased along with the increase of the change amplitude of the state parameter value, so that accurate adaptive following is realized.
Preferably, the status parameter stapar i-1 The calculation function of (2) is:
Figure BDA0004111650710000053
wherein s is 1 Calculating a ratio value, s, for the number of intersections 2 Calculating a ratio value s for the neighborhood number change 3 For the calculated scale value of the power change, numS represents the total number of wireless sensor nodes included in the intersection S, numrecv p+1 Representation set recv p+1 The total number of wireless sensor nodes included in the network, numnei p+1,node And numnei p,node Respectively representing the number of neighbor nodes which normally work in the communication range of the wireless sensor node in response messages received by the p+1st round and the p round, wherein chgratest is a set number change proportion comparison value, enrg p+1,node And enrg p,node Respectively representing the current electric quantity percentages of wireless sensor node nodes in response messages received by the p+1st round and the p-th round; fullnrg represents the maximum power percentage of the wireless sensor node.
When the state parameter is calculated, the first angle is the total number numS of the wireless sensor nodes contained in the reference intersection S, and the larger the numS is, the smaller the position change amplitude of the terminal unit is; the second angle is the state change of the neighbor nodes of the wireless sensor node in the intersection S, and the smaller the state change is, the smaller the position change amplitude of the terminal unit is; the third angle is to examine the change of the electric quantity percentage of the wireless sensor node in the intersection S, and the smaller the change is, the smaller the time change is, and the smaller the position change amplitude of the terminal unit is; the invention calculates the position change amplitude of the terminal unit from three different angles, so that the state parameter which can accurately represent the position change amplitude is obtained after summation, and the smaller the position change amplitude is, the smaller the state parameter is. Therefore, the embodiment of the invention realizes the estimation of the position change amplitude of the terminal unit at the edge computing end, does not occupy the computing resource of the management module, can reduce the operation pressure of the management module, and simultaneously reduces the data communication pressure in the communication network formed by the wireless sensor nodes.
Preferably, sending handshake messages to all wireless sensor nodes in self communication range based on the adaptive sending period includes:
after receiving the response message in each round, the terminal unit calculates an adaptive sending period for sending the handshake message next time;
and if the time length between the current time and the last time of sending the handshake message is greater than the adaptive sending period, sending the handshake message to all wireless sensor nodes in the communication range of the wireless sensor nodes.
Preferably, selecting a communication destination according to the response message includes:
calculating a communication target index of the wireless sensor node corresponding to each response message respectively;
and taking the first N wireless sensor nodes with the largest communication target indexes as communication targets.
Specifically, N is the minimum number required to meet positioning requirements.
Preferably, the calculation function of the communication objective index is:
Figure BDA0004111650710000061
wherein, comtarind h Is the communication target index of the wireless sensor node h,
Figure BDA0004111650710000071
gamma, lambda are the first, second and third ratio, respectively, mxatbs is the maximum distance between the wireless sensor node and the gateway device in the positioning area, dixtbs h Dixtbn is the distance between the wireless sensor node h and the gateway device h Between the wireless sensor node h and the terminal unitDistance of mxars h Numbs is the communication radius of the terminal unit h In the neighbor nodes of the wireless sensor node h, the number of wireless sensor nodes, numfnei, of which the linear line segment between the wireless sensor node h and the gateway device is smaller than a set distance threshold value h Is the total number of neighbor nodes of the wireless sensor node h.
The communication target index can select as far as possible from the terminal unit and as close as possible to the gateway device, and as many wireless sensor nodes as possible among the neighbor nodes toward the gateway device are used as communication targets. In the prior art, when a communication target is selected, a wireless sensor node with a short distance is generally selected, but in the invention, because the number of terminal units may be very large, if the wireless sensor nodes with the short distance are all selected, the number of times that the first message needs to be forwarded is greatly increased, so that the data transmission pressure in a communication network formed by the wireless sensor nodes is increased, the power consumption speed of the wireless sensor nodes is increased, and the gateway device in the first message transmission is not favorable for fast and energy-saving. Therefore, in the calculation of the communication target index, the farther the distance from the terminal unit is, the larger the value of the communication target index is, numbs h The larger the value of the communication target index is, the larger the value of the communication target index is. Whereas, since the communication target is likely to select a multi-hop manner to communicate, numbs h The larger the value of the (c) is, the larger the probability that the distance between the forwarding target selected by the communication target and the gateway device is as small as possible is, so that the transmission efficiency of the first message is further improved.
Preferably, the number of communication targets is 3.
Preferably, calculating the position coordinates of the worker from the first message includes:
after receiving the first message forwarded by the communication target, the management module calculates the position coordinates of the worker in a triangular positioning mode.
Specifically, the principle of triangulation assumes that a measurement target point and two reference points with known coordinates can form a triangle, and then the height and coordinates of the target point can be found by calculating the length of one reference edge of the triangle and measuring the angle formed by the two reference points and the target point.
Preferably, transmitting the first message to the gateway device comprises:
after receiving the first message, the wireless sensor node judges whether the gateway device is in the communication range of the wireless sensor node or not, if so, the wireless sensor node directly sends the first message to the gateway device, and if not, a forwarding target is selected in the communication range of the wireless sensor node, and the first message is sent to the forwarding target.
Specifically, the multi-hop communication with the gateway device is realized by continuously selecting the next forwarding target.
Preferably, send out early warning suggestion to the workman, include:
and sending out an early warning prompt to a worker in a mode of playing the warning prompt record.
Specifically, the alarm prompt record is stored in the terminal unit.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (8)

1. An engineering management system based on an IOT technology is characterized by comprising a positioning module and a management module;
the positioning module comprises a communication unit and a terminal unit;
the terminal unit is carried by a worker, and the communication unit comprises a gateway device and a plurality of wireless sensor nodes arranged in a positioning area;
the terminal unit is used for communicating with the wireless sensor node and sending a first message for positioning to the wireless sensor node;
the wireless sensor node is used for transmitting a first message to the gateway device;
the gateway device is used for transmitting the first message to the management module;
the management module is used for calculating the position coordinates of the workers according to the first message, judging whether the position coordinates are in a preset danger early warning area or not, and if yes, sending a second message for carrying out danger early warning on the workers to the gateway equipment;
the gateway device is used for sending the second message to the wireless sensor node, and the wireless sensor node is used for transmitting the second message to the terminal unit;
the terminal unit is used for sending out an early warning prompt to the worker after receiving the second message.
2. The IOT technology-based engineering management system of claim 1, wherein the location area comprises an indoor area and an outdoor area.
3. The IOT technology-based engineering management system according to claim 1, wherein at least one other wireless sensor node exists within the communication range of any wireless sensor node in the location area.
4. The IOT technology-based engineering management system of claim 1, wherein communicating with a wireless sensor node, sending a first message to the wireless sensor node for positioning, comprises:
the terminal unit sends handshake messages to all wireless sensor nodes in the communication range of the terminal unit;
the wireless sensor node which receives the handshake message sends a response message to the terminal unit;
the terminal unit selects a communication target according to the response message and sends a first message for positioning to the communication target.
5. The IOT technology-based engineering management system recited in claim 4, wherein the number of communication targets is 3.
6. The IOT technology-based engineering management system according to claim 5, wherein calculating the position coordinates of the worker from the first message comprises:
after receiving the first message forwarded by the communication target, the management module calculates the position coordinates of the worker in a triangular positioning mode.
7. The IOT technology-based engineering management system of claim 1, wherein transmitting the first message to the gateway device comprises:
after receiving the first message, the wireless sensor node judges whether the gateway device is in the communication range of the wireless sensor node or not, if so, the wireless sensor node directly sends the first message to the gateway device, and if not, a forwarding target is selected in the communication range of the wireless sensor node, and the first message is sent to the forwarding target.
8. The IOT technology-based engineering management system of claim 1, wherein the alerting prompt is sent to a worker, comprising:
and sending out an early warning prompt to a worker in a mode of playing the warning prompt record.
CN202310208013.7A 2023-03-06 2023-03-06 Engineering management system based on IOT technology Withdrawn CN116233746A (en)

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CN116935597A (en) * 2023-08-19 2023-10-24 广州劲源科技发展股份有限公司 Substation operation site safety behavior monitoring method based on three-dimensional model

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116935597A (en) * 2023-08-19 2023-10-24 广州劲源科技发展股份有限公司 Substation operation site safety behavior monitoring method based on three-dimensional model
CN116935597B (en) * 2023-08-19 2024-04-30 广州劲源科技发展股份有限公司 Substation operation site safety behavior monitoring method based on three-dimensional model

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