CN203378602U - Collision alarming safety helmet - Google Patents
Collision alarming safety helmet Download PDFInfo
- Publication number
- CN203378602U CN203378602U CN201320428022.9U CN201320428022U CN203378602U CN 203378602 U CN203378602 U CN 203378602U CN 201320428022 U CN201320428022 U CN 201320428022U CN 203378602 U CN203378602 U CN 203378602U
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- Prior art keywords
- safety helmet
- cap
- cap shell
- circuit
- circuit board
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Abstract
The utility model provides a collision alarming safety helmet, and relates to the technical field of caps. The collision alarming safety helmet comprises a hollow hemispherical cap shell; a metal resistance strain gage is arranged in a laying manner along the inner wall of the cap shell; the inner wall of the cap shall is further connected to a circuit board; the outer wall of the cap shell is connected with a buzzle; the metal resistance strain gage is electrically connected with the buzzle through the circuit board; a hand knob is arranged at the lower end, close to a cap brim of the cap shell, of the circuit board. According to the utility model, the technical problems of alarming loss or false alarm of the collision alarming safety helmet in the prior art are solved. The collision alarming safety helmet has the benefits that when being collided by falling objects and impacting objects, the safety helmet can automatically determine the impact strength to prevent alarming loss or false alarm; once personnel hurt due to drastic collision with the safety helmet, the alarming safety helmet can automatically alarm timely to inform rescue personnel so as to reduce casualties in the project construction process.
Description
Technical field
The utility model relates to field of hat, especially relates to a kind of helmet structure.
Background technology
Along with social city's process is more and more faster, construction site is also more and more.In construction, object falls and impact is one of topmost three large security incidents.Construction safety the first, entering job site safe wearing cap is the most effective precautionary measures.Chinese patent Granted publication CN202873929U, April 17 2013 Granted publication day, name is called the utility model patent of " collision alerts safety cap ", a kind of safety cap that shock can be reported to the police that is subject to is disclosed, it comprises illuminating lamp, power supply, cap body, audible alarm unit and crash sensor, safety cap has a cap body, the installed in front of cap body has illuminating lamp, interconnective audible alarm unit and crash sensor are installed on the cap body, and crash sensor is connected with the power supply of illuminating lamp with audible alarm unit.The safety cap of this utility model can be sought help to rescue personnel or other staff in the situation that be knocked and send chimes of doom, has protected to a greater extent workman's safety.The crash sensor of this utility model is arranged on the safety cap rear portion, has following problem: at the construction field (site), what safety cap was subject to is irregular impact force, and the colliding part that safety cap is subject to is also different.When falling object or hit thing and collide the safety cap shell away from crash sensor such as anterior, impact has very greatly caused injury to personnel, and crash sensor is not also felt, causes and fails to report the police; When falling object or hit thing and collide the shell near crash sensors such as safety cap rear portion, even impact is very faint, crash sensor also can be felt, causes false alarm.
Summary of the invention
Can fail to report the technical problem of alert or false alarm in order to solve collision alerts safety cap in prior art, the utility model provides a kind of collision alerts safety cap, reach the shock dynamics that safety cap is subject to of distinguishing, once injury to personnel and alarm are striven for the rescue time, reduce the purpose of the casualties in engineering construction.
The technical solution of the utility model is: a kind of collision alerts safety cap, it comprises the hemisphere cap shell of hollow, be laid with metal resistance strain gauge along cap shell inwall, cap shell inwall also is connected with circuit board, cap shell outer wall is connected with buzzer, metal resistance strain gauge is electrically connected to buzzer by circuit board, and the circuit board lower end is provided with hand push button near the brim of a hat of cap shell.Safety cap is clashed into, and impact is spent greatly has injury to the workmen, and safety cap sends chimes of doom automatically, and the wounded is waited for rescue.Hand push button conveniently runs into emergency and manually reports to the police.
As preferably, circuit board is provided with input amplifying circuit and amplification output circuit, metal resistance strain gauge is electrically connected to the input of input amplifying circuit, the output of input amplifying circuit is connected with comparison circuit, the output of comparison circuit is electrically connected to the input of amplification output circuit, the output of amplification output circuit is electrically connected to buzzer, and hand push button is connected in parallel with the output of amplification output circuit with buzzer.
As preferably, metal resistance strain gauge is thin film strain gauge; Thin film strain gauge and cap shell inwall bond area are large, firm pasting, and the thin film strain gauge humidity, can not affect because of the sweat of head detection accuracy.
Compared with prior art, the beneficial effects of the utility model are: after falling object and alluvium clash into safety cap, the safety cap automatic discrimination clashes into dynamics, and safety helmet with alarm can not failed to report the police can false alarm yet.Clash into injury to personnel once safety cap is subject to great dynamics, the timely automatic alarm of safety helmet with alarm, notify the rescue worker, reduces the casualties in engineering construction.
The accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is the utility model electrical connection graph.
In figure: 1-cap shell; The 2-metal resistance strain gauge; The 3-circuit board; The 4-buzzer; The 31-input amplifying circuit; The 32-comparison circuit; The 33-amplification output circuit; The 34-hand push button.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, a kind of collision alerts safety cap, it comprises the hemisphere cap shell 1 of hollow.Be laid with metal resistance strain gauge 2 along cap shell 1 inwall.Cap shell 1 inwall also is connected with circuit board 3.Cap shell 1 outer wall is connected with buzzer 4.Metal resistance strain gauge 2 by circuit board 3 with state buzzer 4 and be electrically connected to.Circuit board 3 lower ends are provided with hand push button 34 near the brim of a hat of cap shell 1.
As shown in Figure 2, circuit board 3 is provided with input amplifying circuit 31 and amplification output circuit 33.Metal resistance strain gauge 2 is electrically connected to the input of input amplifying circuit 31.Metal resistance strain gauge 2 is thin film strain gauge.The resistance of metal resistance strain gauge 2 is expressed as R1 in Fig. 2.R1, R2, R3 and R4 form electric bridge, the lead-in wire access R1 position of thin film strain gauge.The core of input amplifying circuit 31 is variable gain amplifier AD8221.The input of electric bridge access AD8221.The output of input amplifying circuit 31 is connected with comparison circuit 32, adopts LM311 type comparator in comparison circuit, by the resistance of regulating resistance R 7 in comparison circuit, sets comparing voltage value.The output of comparison circuit 32 is electrically connected to the input of amplification output circuit 33.Amplification output circuit 33 is comprised of NPN type amplifying triode TV1 and relay.Relay is comprised of coil KM and normally opened contact K1.Coil KM is connected with the emitter stage of triode TV1.The output of amplification output circuit 33 is electrically connected to buzzer 4.Normally opened contact K1 connects with buzzer 4.Hand push button 34 is connected in parallel with the output of amplification output circuit 33 with buzzer 4.Hand push button 34 is normally opened contact K2, and normally opened contact K2 is in parallel with normally opened contact K1.
Safety cap is subject to impulsive force, 1 deformation of cap shell, and thin film strain gauge resistance R 1 value changes, electric bridge variable signal input AD8221.Signal amplifies and processes the signal that becomes voltage through AD8221.The input of voltage signal input comparison circuit 32.Comparison circuit 32 presets a magnitude of voltage by resistance R 7.Preset magnitude of voltage when input voltage is less than, illustrate that but impact is by handstone and so on impact or safety cap and object strikes can make the people injured, comparison circuit 32 no-outputs; Preset magnitude of voltage when input signal is greater than, be safety cap and be subject to the impulsive force that makes the people injured, comparison circuit 32 has Voltage-output.The base stage of the output voltage input triode TV1 of comparison circuit 32, amplify output voltage through triode TV1 and be carried in coil KM two ends, and coil KM obtains electric adhesive normally opened contact K1.Close normally opened contact K1 buzzer 4 is connected with power supply E, buzzer 4 is reported to the police.
When accident occurs and needs emergency alarm in safe wearing cap personnel, manual closing normally opened contact K2, buzzer 4 is connected with power supply E, and buzzer 4 is reported to the police.
Claims (3)
1. a collision alerts safety cap, it comprises the hemisphere cap shell (1) of hollow, it is characterized in that: along described cap shell (1) inwall, be laid with metal resistance strain gauge (2), described cap shell (1) inwall also is connected with circuit board (3), cap shell (1) outer wall is connected with buzzer (4), described metal resistance strain gauge (2) is electrically connected to described buzzer (4) by circuit board (3), and described circuit board (3) lower end is provided with hand push button (34) near the brim of a hat of cap shell (1).
2. a kind of collision alerts safety cap according to claim 1, it is characterized in that: described circuit board (3) is provided with input amplifying circuit (31) and amplification output circuit (33), described metal resistance strain gauge (2) is electrically connected to the input of input amplifying circuit (31), the output of input amplifying circuit (31) is connected with comparison circuit (32), the output of comparison circuit (32) is electrically connected to the input of amplification output circuit (33), the output of amplification output circuit (33) is electrically connected to described buzzer (4), described hand push button (34) is connected in parallel with the output of amplification output circuit (33) with buzzer (4).
3. a kind of collision alerts safety cap according to claim 1 and 2, it is characterized in that: described metal resistance strain gauge (2) is thin film strain gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428022.9U CN203378602U (en) | 2013-07-18 | 2013-07-18 | Collision alarming safety helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428022.9U CN203378602U (en) | 2013-07-18 | 2013-07-18 | Collision alarming safety helmet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203378602U true CN203378602U (en) | 2014-01-08 |
Family
ID=49867146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320428022.9U Expired - Fee Related CN203378602U (en) | 2013-07-18 | 2013-07-18 | Collision alarming safety helmet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203378602U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105249586A (en) * | 2015-11-20 | 2016-01-20 | 怀宁县明月矿山开发有限责任公司 | Multi-functional safety helmet |
| CN105401978A (en) * | 2015-11-20 | 2016-03-16 | 怀宁县明月矿山开发有限责任公司 | Safety alarming device |
| CN106512145A (en) * | 2016-11-14 | 2017-03-22 | 西华师范大学 | Infusion bottle alarming device |
| CN111904078A (en) * | 2020-07-21 | 2020-11-10 | 浙江省一建建设集团有限公司 | Safety production sharing digital ecosystem based on safety helmet and working method |
-
2013
- 2013-07-18 CN CN201320428022.9U patent/CN203378602U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105249586A (en) * | 2015-11-20 | 2016-01-20 | 怀宁县明月矿山开发有限责任公司 | Multi-functional safety helmet |
| CN105401978A (en) * | 2015-11-20 | 2016-03-16 | 怀宁县明月矿山开发有限责任公司 | Safety alarming device |
| CN106512145A (en) * | 2016-11-14 | 2017-03-22 | 西华师范大学 | Infusion bottle alarming device |
| CN111904078A (en) * | 2020-07-21 | 2020-11-10 | 浙江省一建建设集团有限公司 | Safety production sharing digital ecosystem based on safety helmet and working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20160718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |