CN108294389A - A kind of safety cap - Google Patents
A kind of safety cap Download PDFInfo
- Publication number
- CN108294389A CN108294389A CN201710018317.1A CN201710018317A CN108294389A CN 108294389 A CN108294389 A CN 108294389A CN 201710018317 A CN201710018317 A CN 201710018317A CN 108294389 A CN108294389 A CN 108294389A
- Authority
- CN
- China
- Prior art keywords
- safety cap
- module
- bluetooth
- location
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B1/00—Hats; Caps; Hoods
- A42B1/24—Hats; Caps; Hoods with means for attaching articles thereto, e.g. memorandum tablets or mirrors
- A42B1/245—Means for mounting audio or communication systems
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B1/00—Hats; Caps; Hoods
- A42B1/24—Hats; Caps; Hoods with means for attaching articles thereto, e.g. memorandum tablets or mirrors
- A42B1/242—Means for mounting detecting, signalling or lighting devices
Abstract
The present invention relates to a kind of safety caps, including safety cap ontology, further include the controller being arranged on safety cap ontology, fall detection unit and communication alert unit；The fall detection unit includes gyro module, accelerating curve computing module and state-detection determination module；The gyro module is suitable for the 3-axis acceleration value of detection safety cap wearer in real time；The accelerating curve computing module is suitable for the 3-axis acceleration value being depicted as electronic curve figure；The state-detection determination module is suitable for being detected judgement to the line style tendency in the electronic curve figure in real time.The present invention collects attendance, and positioning and rescue are in one, the personnel positioning using advanced algorithm applied to the workplace of no GPS signal.The present invention has known the alert that personnel fall by MEMS sensor, with hop algorithm in time, and valuable time is provided for rescue in time, and implementation is provided to bury rescue personnel's positioning.
Description
Technical field
The present invention relates to production protector fields, and in particular to a kind of safety cap.
Background technology
In building construction, road and bridge, coal mine excavation etc. is leaned on containing working attendance in dangerous construction industry, is also only rested on
It checks card, security protection protects state by the basic primary attendance such as gas alarming of simple functions.Due to these work environment compared with
To be severe, working position is not fixed, and nowhere looking for for construction personnel's roaming often occurs, or because collapsing, burial etc. needs to rescue
When can not position and identifying to personnel, can only tentatively be judged using life-detection instrument, arbitrarily be excavated, waste valuable rescue
Time, so market especially needs a kind of fusion attendance, the product of positioning and rescue.
Invention content
The technical problem to be solved by the present invention is to：It proposes a kind of with construction personnel's fall detection and the passive request rescue of master
The safety cap of function.
The technical solution that the present invention proposes to solve above-mentioned technical problem is：A kind of safety cap, including safety cap ontology, also
Including the controller, fall detection unit and communication alert unit being arranged on safety cap ontology；
The fall detection unit includes gyro module, accelerating curve computing module and state-detection determination module；
The gyro module is suitable for the 3-axis acceleration value of detection safety cap wearer in real time；
The accelerating curve computing module is suitable for the 3-axis acceleration value being depicted as electronic curve figure；
The state-detection determination module is suitable for being detected judgement to the line style tendency in the electronic curve figure in real time, when
When line style tendency meets preset condition, judgement safety cap wearer is in tumble state, and sends out tumble status information to described
Controller；
The controller receives and outwardly sends out rescue signal by the communication alert unit after the tumble status information.
Further, the fall detection unit further includes baroceptor, and the baroceptor for detecting in real time
Safety cap ontology is presently in the atmospheric pressure value at height, and the atmospheric pressure value is sent to the state-detection determination module.
Further, the communication alert unit includes SOS button and type active RFID electronic label, further includes and the control
Device processed establishes the ZIGBEE communication modules of signal connection.
Further, further include the bluetooth transceiver being arranged on the safety cap ontology, the bluetooth transceiver has
Unique identifier, the bluetooth transceiver are suitable for the ID of several bluetooth nodes established a connection and signal strength passing through institute
It states ZIGBEE communication modules and is sent to location-server.
Further, the location-server is suitable for calculating bluetooth transceiver according to preset Bluetooth signal attenuation model
The distance between described several bluetooth nodes, further according to geographical location information combination triangle known to several bluetooth nodes
Positioning mode calculates the current location of safety cap ontology.
Further, GPS or Beidou positioning module are provided on the safety cap ontology；
The location-server further includes attendance module, and the attendance module is suitable for investigating specific described within a preset period of time
Whether unique identifier appears in specific region.
The beneficial effects of the invention are as follows：
The present invention collects attendance, and positioning and rescue are in one, the people using advanced algorithm applied to the workplace of no GPS signal
Member's positioning.The present invention has known the alert that personnel fall by MEMS sensor, with hop algorithm in time, is provided for rescue in time
Valuable time provides implementation to bury rescue personnel's positioning.
Description of the drawings
The safety cap of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of safety cap in the present invention；
Fig. 2 is the circuit diagram of safety cap in the present invention；
Fig. 3 is the schematic diagram of indoor positioning.
In fig. 2, LED is 4 light emitting diodes, indicates battery low-pressure state, alarm condition, connection type and positioning
Mode；BUZZ is buzzer, for sending out alarm sound；BCM156 is the gyro module of Bosch, is worn for acquiring
Person falls for personnel in the acceleration value in three directions and judges foundation；BMP280 is that the othermohygrometer of Bosch passes
Sensor, for acquiring pairing person's working environment parameter；TCS862 is playback chip, receives the acoustic information for coming from platform,
Playing alert tones etc.；CC2530 is the ZIGBEE chips of TI companies, is constituted in addition to GSM for the ZIGBEE coordinators with networking
Except information reporting routing；RF433 is the SI4432 of Si Corporation, for the timing transmission RFID information when burying rescue；
N79E814 is the MCU of Xin Tang companies, for coordinating sensor, the actions such as ZIGBEE；MT2503 is Lian Fake companies
Intelligence wearing product MCU, built-in GSM call, GPS/ Big Dipper bimodulus location navigations, blue tooth communication function, acquisition positioning letter
Breath, open air reports positioning and environmental parameter etc..
Specific implementation mode
Embodiment
According to Fig. 1 and Fig. 2, the safety cap in the present invention, including safety cap ontology, further include being arranged in safety cap sheet
Controller, fall detection unit on body and communication alert unit.
Fall detection unit includes gyro module, accelerating curve computing module and state-detection determination module.It falls
The basic principle of detection unit is the acceleration by measuring three orthogonal directions of the people of safe wearing cap during the motion
The height value that variation and the air pressure measured are calculated judges to be somebody's turn to do to perceive the variation of its body posture by Algorithm Analysis
Whether personnel occur tumble situation.
Wherein, gyro module is suitable for the 3-axis acceleration value of detection safety cap wearer in real time.
Wherein, accelerating curve computing module is suitable for 3-axis acceleration value being depicted as electronic curve figure.
Wherein, state-detection determination module is suitable for being detected judgement to the line style tendency in electronic curve figure in real time.
When line style tendency meets preset condition, judgement safety cap wearer is in tumble state, and sends out tumble status information to control
Device processed.
To reduce the False Rate of fall detection and improving detection accuracy, fall detection unit may also include air pressure sensing
Device, the atmospheric pressure value that baroceptor is presently in for detecting safety cap ontology in real time at height, and institute is calculated by atmospheric pressure value
The relative altitude at place, atmospheric pressure value and relative altitude are all sent to state-detection determination module.
The reason of fall detection is achieved is to rest, labour or moving personnel three orthogonal directions acceleration
The acceleration change and relative altitude variation of degree variation and relative altitude and personnel when falling.It is summed up tumble personnel's
Acceleration and relative altitude variation have several differences：
Falling process：Certain weightlessness can all occur when starting tumble.In the decline process of freely falling body, this phenomenon
Can be more obvious, the vector sum of acceleration can be reduced to close to 0 g, and the duration is related with the height of freely falling body.For one
As tumble, although weightlessness do not have as freely falling body it is so apparent, also can there is a situation where resultant acceleration be less than 1 g
（Resultant acceleration should be greater than 1 g under normal conditions）.Therefore, short time resultant acceleration is less than 1 g, and bigger change also occurs for air pressure
Change, these can be as first basis for estimation of tumble state.
Collision process：After weightlessness, it can hit, accelerate with ground or other objects when human body is fallen
It writes music and will produce a prodigious impact in line.By the weightless height for being decided by human body to the time hit.
Stopped process：Usual human body has of short duration stationary state after tumble generates shock again（If because of tumble
Stunning fan, in some instances it may even be possible to be the static of long period）.Show on accelerating curve be exactly can be for some time stationary value,
Air pressure is also in metastable state at this moment.
Compared with original state：After tumble, human body can by being uprightly turned to horizontal volt, therefore the direction of human body can with it is original
The posture of standing（Tri- directions original state X, Y, Z）It is different.This makes the 3-axis acceleration under the stationary state after falling
Numerical value is different from the 3-axis acceleration under original state, and the relative altitude of air pressure detection generally has 1.5 meters or more of variation.
The variation of acceleration, 1.5 meters or more the height changes calculated in conjunction with gas sensor measurement air pressure, and
The time interval of three acceleration changes, combines, and constitutes entire fall detection algorithm.Controller falls receiving
After status information, outwardly or background server sends out rescue signal by communication alert unit.
It can be used as preferably：Communication alert unit includes SOS button and type active RFID electronic label, further includes and controls
Device processed establishes the ZIGBEE communication modules of signal connection.When human body is fallen or buried, wearer presses SOS keys, safety cap meeting
Start rescue mode：Red LED flickers, and timing emits the RFID codes of 433mhz.Vertical strong, the transmission range using penetrating for 433MHZ
Remote function is easy to know the location information of wearer.
In workplace（When inoperative place is isolated, hand-held ZIGBEE systems, construction and safety cap can be enabled temporarily
Connection）, can also have the ZIGBEE of automatic network-building function that environmental parameter and warning message are reported to backstage clothes by pre- cloth
Business device.Background server can also closely penetrate ZIGBEE transmission orders when personnel go into a coma and do not press SOS request rescues
Start SOS functions.Background server can also be sent out through ZIGBEE to wearer and remove when there is alert but without occurring
From voice.
For the indoor positioning for realizing to safety cap wearer in the present invention, can be used as preferably：Further include that setting exists
Bluetooth transceiver on safety cap ontology, bluetooth transceiver have unique identification SID codes, bluetooth transceiver suitable for by it is several and its
The ID and signal strength for establishing the bluetooth nodes of connection are sent to location-server by ZIGBEE communication modules.
Usually at 10 meters or so, location-server is suitable for according to preset Bluetooth signal attenuation model the transmission range of bluetooth
The distance between bluetooth transceiver and several bluetooth nodes are calculated, further according to preliminary making geography position known to several bluetooth nodes
Confidence breath calculates the current location of safety cap ontology in conjunction with triangulation location.
The principle of indoor positioning is：It is exactly signal strength there are one critically important index in the equipment of wireless telecommunications,
Name RSSI (Received Signal Strength Indicator).Transmitter is when emitting signal, due to sky
The conductive problem of gas, signal are gradually decayed with transmitter distance distance, and bluetooth positioning is based on signal strength survey
It is realized away from method RSSI.
In the case of known bluetooth node transmitting power, the bluetooth transceiver in mobile safety cap passes through reception
The signal strength of the node arrived can extrapolate the fundamental distance with node, calculate propagation loss.Use theoretical and experience letter
Number propagation model converts propagation loss to distance.If the accurate position of safety cap can be calculated using three side telemetrys
It sets, precision can navigate in 1 meter.
Algorithm of the three side telemetrys in two dimensional surface as shown in figure 3, three center of circle A, B, C are the bluetooth nodes of pre- cloth,
Its geographical coordinate position is calibrated in advance, is denoted as LA, LB, LC, actually node is also very much, such as LD, LE, LF ...
Deng.When safety cap is when being moved to some position, i.e., the signal strength values RSSI_A of the LA of reading can be measured in upper figure, that is, is calculated
It is obtained at a distance from LA, then is using LA as the center of circle, to measure the distance conversed as the same of radius on the situation theory of safety cap
On heart circle.Safety cap has been also connected with B, C etc. while connecting A points, then the position of safety cap is also the center of circle in distance B, C
On other concentric circles.Even if the physical location of the point X safety caps of joining of three concentric circles.
The node ID number and signal strength values LA, RSSI_ that the bluetooth transceiver timing being placed in safety cap is connected it
A；LB, RSS_B；LC, RSSI_C are reported to location-server, location-server to rely on LA, the LB of precognition by ZIGBEE modes,
The position of LC, the algorithm of binding signal intensity just may know that the position of safety cap.
Algorithm of the three side telemetrys in 3 D stereo face is similar with two dimension, in 10 meters or so transmission ranges of bluetooth,
The concentric circles that theoretically two nodes are formed is joined a little only 2, and the region of joining that they form is also smaller, in sight
Within in one's power.In other words, 2 node ID numbers and signal strength just can determine that safety cap in the regional extent of a very little.
The measurement ID and signal strength of another height difference in need meet measurement request and positioning requirements in three-dimensional height.
It is to know 3 of connection or more the bluetooths arranged in advance to introduce theoretical and practical experience bluetooth location algorithm core
Thus the ID number and signal strength values of node calculate the position of mobile security cap, the i.e. position of personnel.
To realize long-range attendance, GPS or Beidou positioning module are provided on the safety cap ontology.The location-server
Further include attendance module, the attendance module is suitable for investigating whether the specific unique identifier within a preset period of time occurs
In specific region.
There are one unique, the IMEI machines of the GPS/ big dipper modules built in this SID code and safety cap for each safety cap
Body code is the foundation of certification safety cap, and the packet that safety cap reports contains SID codes and IMEI fuselage codes, appears in operating area
It is considered as attendance to register.
The present invention's is not limited to the above embodiment, and the technical solution of above-mentioned each embodiment of the invention can be handed over each other
Fork combination form new technical solution, in addition it is all using equivalent replacement formed technical solution, all fall within the present invention claims guarantor
It protects in range.
Claims (6)
1. a kind of safety cap, including safety cap ontology, it is characterised in that：Further include the controller being arranged on safety cap ontology,
Fall detection unit and communication alert unit；
The fall detection unit includes gyro module, accelerating curve computing module and state-detection determination module；
The gyro module is suitable for the 3-axis acceleration value of detection safety cap wearer in real time；
The accelerating curve computing module is suitable for the 3-axis acceleration value being depicted as electronic curve figure；
The state-detection determination module is suitable for being detected judgement to the line style tendency in the electronic curve figure in real time, when
When line style tendency meets preset condition, judgement safety cap wearer is in tumble state, and sends out tumble status information to described
Controller；
The controller receives and outwardly sends out rescue signal by the communication alert unit after the tumble status information.
2. safety cap according to claim 1, it is characterised in that：The fall detection unit further includes baroceptor, institute
It states baroceptor to be used to detect the atmospheric pressure value that safety cap ontology is presently at height in real time, and the atmospheric pressure value is sent to
The state-detection determination module.
3. safety cap according to claim 2, it is characterised in that：The communication alert unit includes SOS button and active
RFID electronic label further includes establishing the ZIGBEE communication modules that signal is connect with the controller.
4. safety cap according to claim 3, it is characterised in that：Further include that the bluetooth being arranged on the safety cap ontology is received
Device is sent out, there is the bluetooth transceiver unique identifier, the bluetooth transceiver to be suitable for several bluetooths established a connection
The ID and signal strength of node are sent to location-server by the ZIGBEE communication modules.
5. safety cap according to claim 4, it is characterised in that：The location-server is suitable for according to preset Bluetooth signal
Attenuation model calculates the distance between bluetooth transceiver and several bluetooth nodes, further according to several bluetooth nodes
The geographical location information combination triangulation location known calculates the current location of safety cap ontology.
6. safety cap according to claim 5, it is characterised in that：GPS or Big Dipper positioning are provided on the safety cap ontology
Module；
The location-server further includes attendance module, and the attendance module is suitable for investigating specific described within a preset period of time
Whether unique identifier appears in specific region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018317.1A CN108294389A (en) | 2017-01-11 | 2017-01-11 | A kind of safety cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018317.1A CN108294389A (en) | 2017-01-11 | 2017-01-11 | A kind of safety cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108294389A true CN108294389A (en) | 2018-07-20 |
Family
ID=62871499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710018317.1A Pending CN108294389A (en) | 2017-01-11 | 2017-01-11 | A kind of safety cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108294389A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108685244A (en) * | 2018-07-27 | 2018-10-23 | 重庆永安安防科技有限公司 | A kind of safety cap having both alarm and monitoring function |
| CN109875172A (en) * | 2019-03-08 | 2019-06-14 | 重庆大唛物联网科技有限公司 | A kind of intelligent safety helmet and its monitoring system |
| CN110111438A (en) * | 2019-04-18 | 2019-08-09 | 佛山职业技术学院 | A kind of attendance checking system based on radio frequency identification |
| CN110245924A (en) * | 2019-07-08 | 2019-09-17 | 南京青铜建服科技有限公司 | A kind of determination method of effective working |
| CN110599742A (en) * | 2019-09-20 | 2019-12-20 | 浙江省交通规划设计研究院有限公司 | Safety monitoring device, system and method for operating personnel |
| CN111096512A (en) * | 2019-04-02 | 2020-05-05 | 西安科诺维智能交通研究院有限公司 | Safety helmet of construction area ad hoc network |
| CN111815900A (en) * | 2020-05-25 | 2020-10-23 | 国网河北省电力有限公司衡水市桃城区供电分公司 | System and method for visual management of distribution network |
| CN112116301A (en) * | 2020-09-25 | 2020-12-22 | 重庆文理学院 | Intelligent construction site management system |
| CN112289001A (en) * | 2020-11-17 | 2021-01-29 | 金陵科技学院 | Intelligent safety helmet early warning system capable of monitoring human body falling state |
| CN112367620A (en) * | 2020-08-12 | 2021-02-12 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Outgoing escort edge early warning visualization system, method and medium |
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| CN105011453A (en) * | 2015-07-27 | 2015-11-04 | 江苏大学 | Multifunctional intelligent safety cap early-warning system and method |
| CN106137210A (en) * | 2016-07-14 | 2016-11-23 | 北京机械设备研究所 | One is fallen guard system and means of defence |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108685244A (en) * | 2018-07-27 | 2018-10-23 | 重庆永安安防科技有限公司 | A kind of safety cap having both alarm and monitoring function |
| CN109875172A (en) * | 2019-03-08 | 2019-06-14 | 重庆大唛物联网科技有限公司 | A kind of intelligent safety helmet and its monitoring system |
| CN111096512A (en) * | 2019-04-02 | 2020-05-05 | 西安科诺维智能交通研究院有限公司 | Safety helmet of construction area ad hoc network |
| CN110111438A (en) * | 2019-04-18 | 2019-08-09 | 佛山职业技术学院 | A kind of attendance checking system based on radio frequency identification |
| CN110245924A (en) * | 2019-07-08 | 2019-09-17 | 南京青铜建服科技有限公司 | A kind of determination method of effective working |
| CN110599742A (en) * | 2019-09-20 | 2019-12-20 | 浙江省交通规划设计研究院有限公司 | Safety monitoring device, system and method for operating personnel |
| CN110599742B (en) * | 2019-09-20 | 2021-11-26 | 浙江数智交院科技股份有限公司 | Safety monitoring device, system and method for operating personnel |
| CN111815900A (en) * | 2020-05-25 | 2020-10-23 | 国网河北省电力有限公司衡水市桃城区供电分公司 | System and method for visual management of distribution network |
| CN112367620A (en) * | 2020-08-12 | 2021-02-12 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Outgoing escort edge early warning visualization system, method and medium |
| CN112116301A (en) * | 2020-09-25 | 2020-12-22 | 重庆文理学院 | Intelligent construction site management system |
| CN112116301B (en) * | 2020-09-25 | 2023-04-25 | 重庆文理学院 | Intelligent building site management system |
| CN112289001A (en) * | 2020-11-17 | 2021-01-29 | 金陵科技学院 | Intelligent safety helmet early warning system capable of monitoring human body falling state |
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Application publication date: 20180720 |
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