CN115460536A - Intelligent positioning system for factory - Google Patents

Abstract

The invention provides an intelligent positioning system for a factory, which comprises an active tag fixed on equipment, a positioning server and a plurality of anchor base stations, wherein the active tag actively transmits wireless signals at predefined intervals; an electronic tag bound to a managed object and capable of transmitting a wireless signal at a predetermined time interval; the base station receives the wireless signal, the coordinates and the timestamp of the electronic tag and transmits tag attached data; the gateway is used for packaging all recorded data, transmitting the data to an upper positioning server and simultaneously serving as an anchoring base station function; and the positioning server calculates the real-time position coordinates of the electronic tag, and defines and edits the event type related to the position through the rule engine. The invention realizes real-time continuous tracking of factory equipment, personnel, workpieces, materials and the like through indoor and outdoor accurate positioning, and provides refined production management by combining data analysis.

Description

Intelligent positioning system for factory

Technical Field

The invention belongs to the technical field of internet, and particularly relates to an intelligent positioning system for a factory.

Background

With the vigorous development of chemical industry, the safety management problem brought by the development of chemical enterprises is increasingly prominent. In chemical enterprises, material media of a plurality of production devices have the dangers of explosiveness, toxicity, fire hazard and the like, the safety monitoring of most of the chemical production enterprises at present is limited to general video monitoring, only manual identification is needed, an alarm is sent manually, and the informatization and the intellectualization of the monitoring are far away from the requirement of the national safety production special item for treating the action plan of three years. And the existing enterprises have the characteristics of large area and more equipment, so that a lot of problems are brought to the daily production and equipment maintenance of factories. For example, when a worker is located among a plurality of devices in a factory, the worker is easily lost at the current location, and cannot determine which device is located in the vicinity, which causes trouble to the worker.

Disclosure of Invention

The invention aims to provide an intelligent positioning system for a factory, which realizes real-time continuous tracking of factory equipment, personnel, workpieces, materials and the like through indoor and outdoor accurate positioning, generates a track route map, sends positioning data to an upper-layer software system, and combines data analysis to further provide refined production management.

The invention provides the following technical scheme:

an intelligent positioning system for a factory comprises an active tag fixed on equipment for actively sending wireless signals at predefined intervals, and four or more anchoring base stations for receiving the signals and sending the signals to a positioning server through a positioning gateway;

an electronic tag bound to a managed object and capable of transmitting a wireless signal at a predetermined time interval;

the base station receives the wireless signal, the coordinates and the timestamp of the electronic tag and transmits tag attached data;

the gateway is used for packaging all recorded data, transmitting the data to the upper positioning server and serving as an anchoring base station function;

and the positioning server calculates the real-time position coordinates of the electronic tag, and defines and edits the event type related to the position through the rule engine.

Preferably, the electronic tag can also be provided with a data interface, and the detailed position information is directly transmitted to a local control system, or necessary sensor data is provided for the upper position system, so that the UWB high-precision personnel positioning is realized.

Preferably, the base station can realize three-dimensional positioning of the electronic tag through at least three mutually synchronous anchoring base stations, and the precision reaches the centimeter level.

Preferably, the distance between the tag and 3 base stations is calculated by using a ranging algorithm for positioning, accidental errors may occur in the primarily obtained data, kalman filtering is performed on the original data, and the position coordinates of the tag are calculated by using the filtered data through a positioning algorithm;

preferably, the distance between the tag and the base station is affected by the environment and the module itself, and the positioning algorithm performs a low pass filtering process on the measured distance.

The beneficial effects of the invention are: the invention provides the functions of real-time position information monitoring, intelligent inspection, static/dynamic electronic fence, behavior monitoring, paging alarm and the like, so as to ensure the safety of enterprise production work and the efficiency of operation and maintenance work; the real-time position information monitoring is convenient for realizing personnel management: by monitoring the behavior of the staff, a good operation habit is formed, illegal operations are reduced, the safety management quality is improved, and when the staff is in danger, the rescue staff can quickly find the position of the staff according to positioning, so that the rescue efficiency is improved; the intelligent inspection can be used for monitoring whether the staff accurately inspects, custom planning inspection points and routes according to the inspection requirements of production equipment, setting an inspection period, formulating tasks, and enabling managers to check the inspection duration and the inspection track of the staff, so that the staff is prevented from missing inspection and repeating inspection; the system comprises a static/dynamic electronic fence, a UWB positioning system and a control center, wherein the static/dynamic electronic fence is used for ensuring that a staff is in a safety area, the electronic fence is arranged in a dangerous area, if a person without access authority enters the area, the UWB positioning system can give an alarm in real time, remind the person and a manager of improving vigilance, ensure personal safety, page the alarm, ensure that the staff withdraws in time when danger occurs, and send SOS alarm information to the control center in real time through a UWB positioning tag when the danger occurs; moreover, the control center can also page constructors in real time and issue an evacuation command; behavior monitoring ensures that the staff has no abnormal behavior: the system can monitor various behaviors in the region, including overtime monitoring, crowd monitoring, immobility monitoring and the like, and can carry out comprehensive intelligent management, improve the management quality and ensure the personal safety of staff.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of the present invention.

Detailed Description

As shown in FIG. 1, an intelligent location system for a plant includes active tags affixed to equipment that actively transmit wireless signals at predefined intervals. And the four or more anchoring base stations receive the signals and send the signals to the positioning server through the positioning gateway.

Electronic label: the wireless communication device is bound to a managed object (a workpiece, a robot, a carrier, a person, or the like) and can transmit a wireless signal at predetermined time intervals. The electronic tag can also be provided with a data interface to directly transmit detailed position information to a local control system or provide necessary sensor data to an upper position system, so that UWB high-precision personnel positioning is realized.

A base station: and receiving the wireless signal, the coordinates and the timestamp of the electronic tag, and transmitting tag accompanying data. Through at least three mutually synchronous anchoring base stations, the three-dimensional positioning of the electronic tag can be realized, and the precision reaches the centimeter level.

A gateway: the system is used for packaging all recorded data and transmitting the data to an upper positioning server, and can also be used as an anchoring base station function.

Positioning a server: and calculating real-time position coordinates of the electronic tag, and defining and editing the event type related to the position through a rule engine.

The industrial-grade real-time positioning system based on the multi-mode technology is used for high-precision positioning of personnel, articles and the like in a complex industrial environment by virtue of the characteristics of real-time continuity, precision, high efficiency, flexibility, universality, elasticity, expandability and easiness in deployment, realizes a production mode with flexible and self-organization production, helps enterprises to realize digital transformation, and promotes manufacturing intellectualization.

UWB positioning is a carrier-free communication technology, the precision can reach 10cm, data are transmitted by using nanosecond-microsecond-level non-sine wave narrow pulses, and information of the position of a person or an article is generally realized by using TDoA (time difference of arrival) and ToF (time of arrival) algorithms.

Furthermore, UWB technology requires the installation of base stations and the wearing of location tags for the items or persons to be located. The radiation of UWB signals is very low, and is usually only one in a thousand of the radiation of cell-phones, therefore when the system is used to locate the personnel in the factory, it does not have the interference problem to other instruments and meters.

Considering the rigors of industrial application, whether from the aspects of positioning accuracy, safety, interference resistance, power consumption and the like, UWB is undoubtedly one of the most ideal factory personnel positioning system technologies.

Specifically, the application layer: the position, the face comparison result and the video linkage video stream data are obtained through the resolving layer, the position of each label and the carrier of the label are displayed in real time in a map mode, and a monitoring picture of video linkage can be selectively displayed. And (3) a service layer: the service layer comprises positioning engine software, system management software and internal and external interface software, and the software is deployed on a system server. And (3) network layer: the network layer is divided into local area networks and provides data transmission channels. A transmission layer: the transmission layer is also called a backbone communication network (called a backbone network for short), is a data transmission channel between the positioning base station, the face recognition and video linkage camera (equipment), the resolving layer and the application layer, and can select a wired or wireless transmission mode. A sensing layer: the equipment layer mainly comprises a positioning base station, a label, a face recognition camera and a video linkage camera. The positioning of the positioning label is realized through the positioning base station and the UWB positioning channel of the positioning label, and the parameter configuration of the positioning label, the state feedback of the positioning label and the uplink and downlink data of the positioning label by the positioning base station are realized through the ZigBee communication channel of the communication positioning base station and the positioning label.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. An intelligent positioning system for a plant, comprising an active tag fixed to a device for actively transmitting wireless signals at predefined intervals, four or more anchor base stations for receiving the signals and transmitting the signals to a positioning server through a positioning gateway;

an electronic tag bound to a managed object and capable of transmitting a wireless signal at a predetermined time interval;

the base station receives the wireless signal, the coordinate and the timestamp of the electronic tag and transmits tag accompanying data;

the gateway is used for packaging all recorded data, transmitting the data to an upper positioning server and simultaneously serving as an anchoring base station function;

and the positioning server calculates the real-time position coordinates of the electronic tag, and defines and edits the event type related to the position through the rule engine.

2. An intelligent location system for factory according to claim 1 wherein, the electronic tag can also be equipped with a data interface to transmit detailed location information directly to the local control system or provide necessary sensor data to the location system to realize UWB high precision personnel location.

3. The intelligent positioning system for factories of claim 1, wherein the base station can realize three-dimensional positioning of the electronic tags by at least three mutually synchronized anchoring base stations with an accuracy of centimeter level.

4. The intelligent positioning system for the factory as claimed in claim 1, wherein the positioning requires calculating distances from the tags to 3 base stations using a ranging algorithm, occasional errors may occur in the preliminarily obtained data, kalman filtering is performed on the original data, and the position coordinates of the tags are calculated by the filtered data using the positioning algorithm.

5. The intelligent positioning system for factories of claim 1 wherein the distance between the tag and the base station is affected by the environment and the module itself, and the positioning algorithm low-pass filters the measured distance.

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