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CN-122004562-A - Low-power consumption charging-free personnel positioning safety helmet and positioning system based on 2.4G

CN122004562ACN 122004562 ACN122004562 ACN 122004562ACN-122004562-A

Abstract

The invention discloses a 2.4G-based low-power-consumption charging-free personnel positioning safety helmet and a positioning system, and belongs to the technical fields of Internet of things positioning technology and industrial safety equipment. The positioning safety helmet comprises a safety helmet body and a positioning tag fixed on the safety helmet body, wherein the positioning tag comprises a 2.4G wireless receiving and transmitting circuit, an acceleration sensor, a disposable battery and a main control unit, and the main control unit judges that a wearer is in a motion mode or a static mode according to the data of the acceleration sensor and dynamically adjusts broadcasting frequency, wherein the motion mode frequency is higher than the static mode. The invention also provides a positioning system which comprises a plurality of positioning safety helmets, a positioning gateway, at least one stage of relay gateway and a public network gateway. The invention realizes the charging-free operation of the positioning safety helmet in the whole life cycle of the safety helmet, and the low-power consumption and long-distance data transmission of the positioning system in a complex environment, thereby being applicable to the personnel positioning and management of high-risk operation scenes such as buildings, mines, tunnels and the like.

Inventors

  • ZHANG YONG
  • GONG QIANG
  • HE JIAO
  • YE HAILIN

Assignees

  • 云筑信息科技(成都)有限公司
  • 中建电子商务有限责任公司

Dates

Publication Date
20260512
Application Date
20260408

Claims (10)

  1. 1. Low-power consumption exempts from charging personnel location safety helmet based on 2.4G, its characterized in that includes: a helmet body; The positioning tag is fixed on the helmet body; The positioning label includes: a 2.4G wireless transceiver circuit for broadcasting a 2.4G wireless data packet containing unique identification information of the positioning tag; The acceleration sensor is used for collecting movement state data of a wearer; a disposable battery for providing working power for the positioning tag; The main control unit is respectively and electrically connected with the 2.4G wireless receiving and transmitting circuit and the acceleration sensor, judges whether the motion state of a wearer is a motion mode or a static mode according to the motion state data output by the acceleration sensor, and dynamically adjusts the broadcasting frequency of the 2.4G wireless receiving and transmitting circuit according to the judged motion state, wherein the broadcasting frequency in the motion mode is higher than the broadcasting frequency in the static mode.
  2. 2. The 2.4G-based low-power-consumption charging-free personnel positioning safety helmet according to claim 1, wherein the judging of the movement state of the wearing personnel specifically comprises: when the positioning tag is in a static mode, the main control unit periodically acquires motion state data acquired by the acceleration sensor at a first acquisition interval, and sets a first count value for recording the number of times of continuously detecting the motion state; comparing the data obtained each time with a preset motion threshold, and accumulating a first count value if the motion threshold is exceeded, otherwise, resetting the first count value; When the first count value reaches a first preset value, the main control unit judges that the wearer enters a motion state and switches the positioning tag into a motion mode; When the positioning tag is in a motion state, the main control unit periodically acquires motion state data acquired by the acceleration sensor at a second acquisition interval, and sets a second count value for recording the times of continuously detecting a static state; comparing the data obtained each time with a preset motion threshold, if the motion threshold is not exceeded, accumulating a second count value, otherwise, resetting the second count value; When the second count value reaches a second preset value, the main control unit judges that the wearing person enters a static state and switches the positioning tag into a static mode.
  3. 3. The low power consumption charging-free personnel location safety helmet based on 2.4G of claim 1, wherein the location tag is in a factory mode and an activation mode: in a factory mode, the 2.4G wireless transceiver circuit broadcasts at a first broadcast frequency; In the active mode, the main control unit broadcasts at the dynamically adjusted broadcast frequency according to the movement state of the wearer.
  4. 4. The low power consumption charging-free personnel location safety helmet based on 2.4G according to claim 1, wherein the broadcasting frequency in the moving mode is 5 times/1 second and the broadcasting frequency in the stationary mode is 1 times/1 second.
  5. 5. The low-power consumption charging-free personnel positioning safety helmet based on 2.4G of claim 1, wherein the positioning label further comprises a waterproof device and an anti-dismantling device, the waterproof device is coated outside the positioning label, and preferably, the anti-dismantling device is a push-type anti-dismantling micro switch.
  6. 6. The low-power consumption charging-free personnel positioning safety helmet based on 2.4G according to claim 1, wherein the disposable battery is a 2000mAh lithium manganese battery, the overall weight of the positioning tag is less than or equal to 35G, and the positioning tag is fixed on the safety helmet body through high-viscosity back glue.
  7. 7. The 2.4G-based low power consumption charging-free personnel positioning safety helmet according to claim 1, wherein the positioning tag further comprises a buzzer and an LED status indicator connected with the main control unit.
  8. 8. A positioning system, comprising: A plurality of positioning helmets as recited in any one of claims 1-7; The system comprises at least one positioning gateway, a plurality of wireless data transmission units and a plurality of wireless data transmission units, wherein the positioning gateway is used for receiving 2.4G wireless data packets broadcast by a positioning safety helmet, measuring RSSI values of the wireless data packets, carrying out data aggregation on a plurality of RSSI values from the same positioning safety helmet in a preset aggregation time window, generating an aggregation data packet containing aggregation data, a serial number and a time identifier, and broadcasting the aggregation data packet; the at least one stage of relay gateway is used for receiving and forwarding the aggregate data packet broadcast by the positioning gateway; And the public network gateway is used for receiving the aggregate data packet forwarded by the last-stage relay gateway and uploading the aggregate data packet to the cloud platform or the upper computer through an external network.
  9. 9. The positioning system of claim 8 wherein the trunking gateway has a self-learning synchronization mechanism: after the relay gateway is powered on, firstly entering a interception mode, analyzing the arrival time rule of each data packet by receiving a plurality of aggregation data packets broadcast by the upstream gateway, and independently learning to establish a wake-up time table synchronous with the transmission time sequence of the upstream gateway; After synchronization is established, the relay gateway is switched to an intermittent working mode, wakes up and opens a receiving window only at the moment corresponding to the wake-up time table, and the rest time is in a dormant state; after the aggregate data packet of the upstream gateway is successfully received in the receiving window, the relay gateway updates the data packet and forwards the data packet to the downstream gateway in the subsequent sending window.
  10. 10. The positioning system of claim 9, wherein the positioning gateway extracts a characteristic value from a plurality of RSSI values of the same positioning helmet at the end of each aggregation time window, encapsulates the characteristic value together with the identification information and the time identifier of the corresponding positioning helmet into an aggregation data packet, and repeatedly broadcasts the aggregation data packet for a preset number of times; when the relay gateway receives the aggregate data packet, the relay gateway filters the repeatedly received data packet according to the serial number in the data packet, and only forwards the valid data packet received for the first time.

Description

Low-power consumption charging-free personnel positioning safety helmet and positioning system based on 2.4G Technical Field The invention relates to the technical field of Internet of things positioning technology and industrial safety equipment, in particular to a low-power-consumption charging-free personnel positioning safety helmet and a positioning system based on 2.4G. Background In high-risk operation scenes such as building construction, mining, power inspection and the like, the safety helmet is core protective equipment for guaranteeing the safety of operators. Along with the improvement of intelligent management demand, intelligent safety helmets with positioning function have appeared in the prior art, and position tracking is realized through positioning technologies such as UWB (ultra wide band), RFID (radio frequency identification), bluetooth beacons and the like, so that management staff can grasp data such as distribution of operators, working hour and work efficiency and the like. However, the intelligent safety helmet in the prior art has the defects that firstly, the problem of endurance anxiety and charging burden is outstanding, the intelligent safety helmet provided with high-power-consumption elements such as GPS (global positioning system) and 4G (fourth generation) modules needs to be charged frequently, the daily maintenance burden of a user is increased, if the intelligent safety helmet is not charged timely in construction operation, positioning data is interrupted, monitoring continuity is lost, secondly, wearing is cumbersome and the problem of separation design is also remarkable, a plurality of positioning schemes adopt extra articles such as a bracelet and a chest card or the positioning tag and the safety helmet are designed separately, the whole weight is large (generally about 400G), wearing experience is poor, people are easy to take, but management loopholes of positioning is not taken, and furthermore, deployment and maintenance cost is high, the positioning systems such as UWB (ultra wideband), bluetooth AoA (Bluetooth AoA) are required to be deployed with a large number of positioning base stations, high requirements on installation positions, power supply and a return network, initial investment is large, expandability is poor, and later maintenance cost is high. Therefore, there is an urgent need for an intelligent personnel positioning solution that can be deeply integrated with a helmet, achieve charging-free long endurance, and wear noninductive. Disclosure of Invention The invention aims to solve the technical problems of short endurance, cumbersome wearing, separation of a positioning tag and a safety helmet and the like of an intelligent safety helmet in the prior art, and provides a 2.4G-based low-power-consumption charging-free personnel positioning safety helmet and a positioning system. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: In one aspect, the invention provides a 2.4G-based low-power-consumption charging-free personnel positioning safety helmet, comprising: a helmet body; The positioning tag is fixed on the helmet body; The positioning label includes: a 2.4G wireless transceiver circuit for broadcasting a 2.4G wireless data packet containing unique identification information of the positioning tag; The acceleration sensor is used for collecting movement state data of a wearer; a disposable battery for providing working power for the positioning tag; The main control unit is respectively and electrically connected with the 2.4G wireless receiving and transmitting circuit and the acceleration sensor, judges whether the motion state of a wearer is a motion mode or a static mode according to the motion state data output by the acceleration sensor, and dynamically adjusts the broadcasting frequency of the 2.4G wireless receiving and transmitting circuit according to the judged motion state, wherein the broadcasting frequency in the motion mode is higher than the broadcasting frequency in the static mode. Further, judging the motion state of the wearer specifically includes: when the positioning tag is in a static mode, the main control unit periodically acquires motion state data acquired by the acceleration sensor at a first acquisition interval, and sets a first count value for recording the number of times of continuously detecting the motion state; comparing the data obtained each time with a preset motion threshold, and accumulating a first count value if the motion threshold is exceeded, otherwise, resetting the first count value; When the first count value reaches a first preset value, the main control unit judges that the wearer enters a motion state and switches the positioning tag into a motion mode; When the positioning tag is in a motion state, the main control unit periodically acquires motion state data acquired by the acceleration sensor at a second acquisition interval, and sets a