CN207492170U - A kind of multifunction mine crash helmet - Google Patents
A kind of multifunction mine crash helmet Download PDFInfo
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- CN207492170U CN207492170U CN201720359045.7U CN201720359045U CN207492170U CN 207492170 U CN207492170 U CN 207492170U CN 201720359045 U CN201720359045 U CN 201720359045U CN 207492170 U CN207492170 U CN 207492170U
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- crash helmet
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- zigbee
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Abstract
This practicality discloses a kind of multifunction mine crash helmet, including crash helmet body, the ultrasonic distance measuring module being arranged on crash helmet, LED, main Zigbee, temperature sensor, gas sensor, LED drive circuit, an and multi-functional cap lamp receiving terminal, wherein LED is placed on the front of crash helmet, and multi-functional cap lamp receiving terminal includes liquid crystal display, switching push button, from Zigbee, microcontroller again.Ultrasonic distance measuring module is generally positioned at the front of crash helmet.The utility model utilizes Zigbee networking technologys, realize the real-time Communication for Power above and below mine, pass through gas sensor module, detection underground fuel gas content in real time, dangerous Probability can be effectively reduced, the adjusting of mine lamp long-and-short distant light can also be realized, so as to which miner be enable to see the environment residing for oneself clearly well.
Description
Technical field
The utility model belongs to downhole safety technical field, and in particular to a kind of multifunction mine crash helmet.
Background technology
Since coal mining accident is multiple, death toll is more, and the death rate for causing China's coal-mine worker remains high always.It is special
It is not that coal mine is great and especially big gas (coal dust) disaster accident takes place frequently, causes the massive losses of national wealth and citizen's life.
In recent years, country is constantly strengthening the management intensity of Safety of Coal Mine Production, on the basis of management is paid attention to, improves safe coal
The technology requirement of production is also particularly important.
The now widely used mine safety helmet generally includes helmet main body, the transparent the brim of a hat, hatband, setting fastening, in the helmet
LED mine lamp is provided with immediately ahead of ontology, one side of the LED mine lamp is provided with gas concentration sensor and communication.In the presence of
The information closing above and below mine.And since the light illumination mode of LED mine lamp is relatively simple, cause miner that can not see itself
Residing environment, single function can not be well adapted for underground complex environment.It is detected simultaneously by gas concentration sensor
The real-time of underground fuel gas content is also bad, can not reduce dangerous Probability.
In conclusion for the particularity of underground operators work, objectively need to design a can monitor in real time
Underground concentration of toxic gases can feed back underground situation, the multifunction mine with preferable illuminating effect to personnel on well in real time
Crash helmet.
Utility model content
The utility model is directed to the deficiency of above-mentioned existing crash helmet, propose it is a kind of be based on microcontroller core in order to control,
Multifunction mine crash helmet with wireless networking and adjustable illumination functions, the crash helmet can solve ore deposit currently on the market
The problem of well lamp function is single can detect the concentration of the burnable gas of underground, and implementation will be on numeric feedback to well in real time
Receiving terminal once overrun value will send out alarm, to implement to rescue in time, while can realize the adjusting of long-and-short distant light to ore deposit
Work provides good field of view.
For this purpose, the utility model proposes technical solution be a kind of multifunction mine crash helmet, including crash helmet sheet
Body, the ultrasonic distance measuring module being arranged on crash helmet, LED, main Zigbee, temperature sensor, gas sensor, LED drive
Dynamic circuit and a multi-functional cap lamp receiving terminal, wherein LED are placed on the front of crash helmet, and multi-functional cap lamp receives
End is again including liquid crystal display, switching push button, from Zigbee, microcontroller.
Further, preferably, above-mentioned ultrasonic distance measuring module is placed on the front of crash helmet.
Preferably, ultrasonic distance measuring module and LED are placed on the front of crash helmet up and down.
Above-mentioned main Zigbee, temperature sensor, gas sensor, LED drive circuit are respectively positioned on the side of crash helmet.
Above-mentioned to be placed in inside multi-functional cap lamp receiving terminal from Zigbee, microcontroller, liquid crystal display, switching push button are embedded in more
Function mine lamp receives end surfaces.
The beneficial effects of the utility model：
1st, the utility model utilizes Zigbee networking technologys.The real-time Communication for Power above and below mine is realized, has broken current ore deposit
The technical barrier of well context information closing.
2nd, the mine lamp of the utility model adds gas sensor module, detects underground fuel gas content, energy in real time
Effectively reduce dangerous Probability.
3rd, the utility model can realize the adjusting of mine lamp long-and-short distant light, so as to which miner be enable to see clearly well residing for oneself
Environment.
4th, the utility model uses LED as lighting source, the low, long lifespan of energy consumption, and air tight, leakproof, dangerous system
Number is small.
5th, the utility model is simple in structure, is readily converted to product promotion market.
Description of the drawings
Fig. 1 is the structure diagram of the utility model：
Identifier declaration：Ultrasonic distance measuring module (1), LED (2), crash helmet (3), from Zigbee (4), temperature sensor
(5), gas sensor (6), LED drive circuit (7), liquid crystal display.
Fig. 2 is each section module control schematic diagram.
Fig. 3：Pwm signal waveform.
Fig. 4：For constant current driver circuit for LED.
Fig. 5 is the modular construction schematic diagram above a kind of multifunction mine crash helmet of the utility model：
Identifier declaration：(8), multi-functional cap lamp receiving terminal (9), switching push button (10), main Zigbee (11), 51 microcontrollers
(12)。
The selection of inductance value and the frequency selection of PWM wave are quite important in this driving circuit.Due to C52 microcontrollers not
Band PWM generation module, we can only generate PWM wave with timer, and high level time immobilizes, by the week for changing PWM wave
Phase, so as to control the duty ratio of PWM wave.
Specific embodiment
The invention is described in further detail with reference to the accompanying drawings of the specification.
It is described in the utility model with microcontroller core in order to control, ultrasonic distance measuring module and high beam (2) are combined, led to
The ultrasonic ranging person that currently worn mine lamp and the distance of barrier under local environment are crossed, ultrasonic ranging is received by microcontroller
The detecting distance that module obtains, so as to adjust the light of high beam away from the convenient miners in coal mine operation see peripheral ring clearly
Unexpected occur is reduced in border.In addition when gas sensor detects that the concentration of the fuel gas in mine exceeds normal range (NR),
Warning device will be caused, multi-functional cap lamp receiving terminal will voluntarily jump to miner's serial number corresponding page, and personnel on well is reminded to take
Effective measures avoid dangerous generation in time.The performances such as the automatic adjustment light of safe and intelligent mine lamp, imflammable gas detection
Safety for underground work personnel provides reliable technical guarantee.Realize that the information inside and outside mine is transmitted using wireless networking,
It solves the problems, such as not communicating with personnel in the pit on well well.
As shown in Figure 1 and Figure 5, a ultrasonic distance measuring module (1), LED (2), crash helmet (3), from Zigbee (4),
Temperature sensor (5), gas sensor (6), LED drive circuit (7), liquid crystal display (8), multi-functional cap lamp receiving terminal (9),
Switching push button (10), main Zigbee (11), 51 microcontrollers (12).
The utility model specific implementation process includes：When this wear-type mine lamp is opened, ultrasonic distance measuring module (1) is real-time
The distance of miner and front obstacle is detected, receives the detecting distance of ultrasonic wave acquisition by microcontroller (12).So as to adjust distance light
The light of lamp (2) is away from the convenient miners in coal mine operation see surrounding enviroment clearly, reduce unexpected occur.In addition gas passes
Fuel gas content under the real-time monitoring well of sensor (6), once detect that the concentration of the fuel gas in mine exceeds normal model
When enclosing, warning device will be caused, multi-functional cap lamp receiving terminal (9) will voluntarily jump to miner's serial number corresponding page, remind on well
Staff adopts an effective measure, and avoids dangerous generation in time.It can be by several miners in underground using Zigbee networking technologys
The environmental information of present position is sent on well and is shown on liquid crystal display (8) in time, while can be by pressing switching
Button (10) alternately checks the environmental information near different miners, and temperature sensor (5) will also acquire down-hole ambient temperature in real time,
It sends and is shown on liquid crystal display (8).
As shown in Fig. 2, the utility model mine lamp is with 51 microcontrollers core in order to control, by ultrasonic distance measuring module (1), gas
Body sensor module (6), LED module (2) are combined.It is adjusted so as to fulfill long-and-short distant light and imflammable gas is excessively alarmed.
PWM light modulations principle is as shown in Figure 3：Pulse width modulates (PWM), is English " Pulse Width Modulation "
Abbreviation, abbreviation pulsewidth modulation.Since output rectangular wave duty ratio constantly changes, then some time in a cycle
LED is connected, portion of time LED cut-offs.This method is based on the human eye characteristic not sensitive enough to brightness flicker, when making load LED
It is dark when bright.If bright dark frequency is more than 100Hz, seen by person is exactly that average brightness rather than LED are flickering.PWM passes through
It adjusts bright and dark time scale and realizes adjusting brightness, in a PWM cycle, because of color break-up of the human eye to being more than in 100Hz
Bright, the brightness of perception is an accumulation, i.e., the bright time is shared that ratio is bigger in whole cycle, and human eye is felt to get over
It is bright.When carrying out PWM light modulations, it is desirable to provide an additional pulse width adjustment signal source is believed by changing the pulse of input
Number duty ratio modulates grid control signal of the LED drive chip to power field effect pipe, passes through LED current so as to reach adjusting
The purpose of size.
PWM wave signal waveform is as shown in figure 3, its duty ratio D (1 formula)：
Wherein Ton and Toff is the high level lasting time and low duration of pwm signal respectively, and T believes for PWM
Number period.
The advantages of this light regulating technology be using it is simple, efficient, precision is high, and good dimming effect, shortcoming is
Flicker is easily captured by high frequency sample devices when frequency only has hundreds of Hz.PWM light regulating technologies are presently believed to be most
Promising LED light regulating technologies, the utility model just employ this light regulating technology.
Constant current driver circuit for LED is as shown in Figure 4：In circuit, when aliving on inductance, inductance can generate magnetic field, i.e.,
Portion of electrical current is converted into the mode " storage " of magnetic energy in inductance；When the no longer galvanization on inductance, inductance can lead to magnetic energy
The mode of overcurrent releases in the loop.This is also the reason of electric current cannot be mutated on inductance, and this based on inductance " fills
It can be used for the discontinuous current generated in average PWM wave light modulation by electric discharge " principle.(2 formula), (3 formula) are LR electricity respectively
The charging and discharging process and electric current on road and the relationship of time.
I=If(1-e-t/τ) (2)
I=I0e-t/τ (3)
Wherein, If is final stabling current, and I0 is electric discharge initial current, and (τ=L/R, L are inductance values to τ, and R is circuit electricity
Resistance) be LR circuits time constant.
The wherein frequency of the selection of inductance value and PWM wave selection is quite important in this driving circuit.Due to C52 monolithics
Machine can only generate PWM wave, high level time immobilizes, by the week for changing PWM wave without PWM generation module with timer
Phase, so as to control the duty ratio of PWM wave.This circuit also has breaking (overvoltage) defencive function.
The utility model utilizes Zigbee networking technologys with microcontroller core in order to control.It realizes real-time above and below mine
The technical barrier of current mine context information closing has been broken in communication.Gas sensor module is added, detecting underground in real time can
Gas content is fired, dangerous Probability can be effectively reduced.Ultrasonic distance measuring module and constant current driver circuit for LED are combined,
The adjusting of mine lamp long-and-short distant light can be realized, so as to which miner be enable to see the environment residing for oneself clearly well.Using LED as photograph
Mingguang City source, consume energy low, long lifespan, and air tight, leakproof, danger coefficient are small.And it is simple in structure, it is readily converted to product and pushes away
Wide market.
Claims (5)
1. a kind of multifunction mine crash helmet, which is characterized in that including crash helmet (3), be arranged on super on crash helmet
Sound ranging module (1), LED (2), main Zigbee (4), temperature sensor (5), gas sensor (6), LED drive circuit
(7) and a multi-functional cap lamp receiving terminal (9), wherein LED (2) are placed on the front of crash helmet (3), multi-functional cap lamp
Receiving terminal (9) but including liquid crystal display (8), switching push button (10), from Zigbee (11), microcontroller (12).
2. multifunction mine crash helmet according to claim 1, it is characterised in that the ultrasonic distance measuring module (1) is put
It puts in the front of crash helmet (3).
3. multifunction mine crash helmet according to claim 2, it is characterised in that the ultrasonic distance measuring module (1) and
LED (2) is placed on the front of crash helmet (3) up and down.
4. multifunction mine crash helmet according to claim 1, it is characterised in that the main Zigbee (4), temperature pass
Sensor (5), gas sensor (6), LED drive circuit (7) are respectively positioned on the side of crash helmet (3).
5. multifunction mine crash helmet according to claim 1, it is characterised in that described from Zigbee (11), microcontroller
(12) it is internal to be placed in multi-functional cap lamp receiving terminal (9), liquid crystal display (8), switching push button (10) are received embedded in multi-functional cap lamp
Hold (9) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720359045.7U CN207492170U (en) | 2017-04-07 | 2017-04-07 | A kind of multifunction mine crash helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720359045.7U CN207492170U (en) | 2017-04-07 | 2017-04-07 | A kind of multifunction mine crash helmet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207492170U true CN207492170U (en) | 2018-06-15 |
Family
ID=62496441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720359045.7U Active CN207492170U (en) | 2017-04-07 | 2017-04-07 | A kind of multifunction mine crash helmet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207492170U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114075995A (en) * | 2021-11-29 | 2022-02-22 | 陆树林 | Underground gas measurement early warning device and method and storable medium |
-
2017
- 2017-04-07 CN CN201720359045.7U patent/CN207492170U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114075995A (en) * | 2021-11-29 | 2022-02-22 | 陆树林 | Underground gas measurement early warning device and method and storable medium |
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