CN104063993A - Head-mounted fatigue detection feedback device - Google Patents
Head-mounted fatigue detection feedback device Download PDFInfo
- Publication number
- CN104063993A CN104063993A CN201310563947.9A CN201310563947A CN104063993A CN 104063993 A CN104063993 A CN 104063993A CN 201310563947 A CN201310563947 A CN 201310563947A CN 104063993 A CN104063993 A CN 104063993A
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- brain wave
- ultramagnifier
- fatigue
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title abstract description 11
- 210000000707 wrist Anatomy 0.000 claims abstract description 15
- 210000004556 brain Anatomy 0.000 claims description 32
- 238000013139 quantization Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000003321 amplification Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 230000000638 stimulation Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000011002 quantification Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 210000000624 ear auricle Anatomy 0.000 description 3
- 206010057315 Daydreaming Diseases 0.000 description 2
- 206010041349 Somnolence Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 206010028372 Muscular weakness Diseases 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
Landscapes
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The invention relates to a head-mounted fatigue detection feedback device. The head-mounted fatigue detection feedback device comprises a detector and a feedback device, wherein the detector is sewed to a hat body; the detector comprises a clamping body, an upper shell, a lower shell, as well as a main PCB and a battery which are installed on the upper shell and the lower shell; a torsional spring which is hinged with the upper shell, and a detection pint and a clamping lug detection body which are electrically connected with the main PCB are arranged outside the clamping body; a Bluetooth transmitter is arranged on the main PCB; a Bluetooth key is arranged on the lower shell. The feedback device comprises an upper shell, a lower shell, a feedback PCB, a battery and a wrist band. The fatigue detection feedback device disclosed by the invention is capable of greatly alleviating the fatigue of a driver, thus the driver adopts the measures of alleviating the fatigue.
Description
Technical field
The instrument that the present invention relates to detection and alerting drivers fatigue driving state, more particularly, relates to the fatigue detecting ultramagnifier that a kind of cap body is worn.
Background technology
At present, fatigue driving causes major reason of traffic hazard.Sail quality of human sleeping poor or not enough, or long-duration driving vehicle, easily occur tired.Driving fatigue can have influence on the aspects such as driver's attention, sensation, consciousness, thinking, judgement, will, decision and motion.After tired, continue steering vehicle, can feel sleepy drowsiness, weakness of limbs, absent minded, judgement declines, and even occurs that absent-minded or moment memory disappears, occurring that action delays or too early,, very easily there is road traffic accident in the unsafe factor such as operation pauses or the correction time is improper.
Prevention driving fatigue is the effective way that ensures traffic safety, in the time that we drive, many times, when we are tired, we do not aware ourselves, so also generally do not adopt remission method, can cause fatigue driving, therefore, develop the brain fag degree detecting of a kind of simple equipment to driver, and can send alarm signal, remind driver to take fatigue-relieving measure, become the current technical solution problem that needs.
Summary of the invention
The object of the invention is to overcome weak point of the prior art, a kind of fatigue detecting ultramagnifier of wear-type is provided.
For achieving the above object, the present invention adopts following technical scheme:
A kind of fatigue detecting ultramagnifier of wear-type, it comprises detector and ultramagnifier, detector is sewn on cap body, detector comprises clamp, upper casing, lower casing and is arranged on upper casing and main PCB plate and the battery of lower casing, clamp peripheral hardware one torsion spring and upper casing are hinged, survey body with sensing point and folder ear that main PCB plate is electrically connected, on main PCB plate, be provided with bluetooth transmitters, and be provided with Bluetooth key on lower casing.
Described main PCB plate is provided with control circuit, control circuit comprises the information acquisition module to human brain brain wave, signal filtering and amplification module, frequency range is chosen module, brain wave quantization modules, judge module and Bluetooth transmission module, wherein signal acquisition module is surveyed body by front sensing point and folder ear, the eeg signal of human brain is gathered, and send gathering the human brain brain wave coming into signal filtering and amplification module, by signal filtering and amplification module, eeg signal is carried out to filter amplifying processing, and bioelectrical signals is sent into frequency range and choose module, frequency range is chosen module by detecting brain wave signal, choose monograph degree wherein and the signal of allowance and output to brain wave quantization modules, brain wave quantization modules adopts DSP process chip that the reception eeg signal of coming is carried out to preliminary conversion and processing, eeg signal is carried out to quantification treatment, and the eeg signal after quantizing is sent into judge module, judge module is provided with the value of tired signal sets, when eeg signal exceeds this value, be judged as fatigue state, signal is sent into Bluetooth transmission module, send the signal of drive feedback device.
The reception eeg signal of coming is carried out preliminary conversion and processing by the DSP process chip of described brain wave quantization modules, input signal is passed through to low-pass filter, pass through again median algorithm peace mean algorithm, adopt again the method for time integral, calculated a notice and the numerical value that loosens power every several seconds.Eeg signal is carried out to quantification treatment.
Described ultramagnifier comprises upper shell, lower house, feedback pcb board, battery and wrist strap, and wrist strap fastens by button and lower house; Wrist strap is provided with hard contact, and hard contact is electrically connected with feedback pcb board; Feedback pcb board is arranged in the cavity between upper shell, lower house, battery is arranged on lower house, and be covered with battery cover board, on feedback pcb board, be also provided with the voltage stimulation circuit of Bluetooth Receiver and the bionical electric current of low frequency, when the eeg signal of brain wave quantization modules exceeds setting value, judge module is judged as fatigue state, signal is sent into Bluetooth transmission module, Bluetooth Receiver signal on ultramagnifier, the circuit of feedback pcb board receives signal, driving voltage stimulation circuit, by hard contact on wrist strap, produces and stimulates collaterals of human.
Beneficial effect of the present invention is: fatigue detecting ultramagnifier of the present invention, can as cap, be worn on front, and folder ear detection body is clipped in to ear, detector can be clipped on shade by clamp, can direct-detection eeg signal, folder ear is surveyed body and can be clamped on ear-lobe, also can conveniently detect eeg signal, when the eeg signal of the brain wave quantization modules of detecting device exceeds setting value, judge module is judged as fatigue state, signal is sent into Bluetooth transmission module, Bluetooth Receiver signal on ultramagnifier, the circuit of feedback pcb board receives signal, driving voltage stimulation circuit, by hard contact on wrist strap, collaterals of human is produced and stimulated.Can fine alleviation driver fatigue, it takes fatigue-relieving measure to make to impel driver.
Brief description of the drawings
Fig. 1 is circuit module figure of the present invention;
Fig. 2 is detector structural drawing of the present invention;
Fig. 3 is ultramagnifier structural drawing of the present invention;
Fig. 4 is detector circuit diagram of the present invention;
Fig. 5 is ultramagnifier circuit diagram of the present invention.
Embodiment
Below in conjunction with Figure of description, the invention will be further described:
As shown in Figure 2, the fatigue detecting ultramagnifier of a kind of wear-type disclosed by the invention, it comprises detector 1 and ultramagnifier 2, detector 1 is sewn on cap body 10, detector 1 comprises clamp 11, upper casing 12, lower casing 13 and is arranged on upper casing 12 and the main PCB plate 14 of lower casing 13 and battery 15, and clamp 11 peripheral hardware one torsion springs 16 are hinged with upper casing 12, surveys body 17 with sensing point 16 and folder ear that main PCB plate 14 is electrically connected, on main PCB plate 14, be provided with bluetooth transmitters, and on lower casing, be provided with Bluetooth key 18.
As shown in Figure 1, described main PCB plate is provided with control circuit, control circuit comprises the information acquisition module to human brain brain wave, signal filtering and amplification module, frequency range is chosen module, brain wave quantization modules, judge module and Bluetooth transmission module, wherein signal acquisition module is surveyed body by front sensing point and folder ear, the eeg signal of human brain is gathered, and send gathering the human brain brain wave coming into signal filtering and amplification module, by signal filtering and amplification module, eeg signal is carried out to filter amplifying processing, and bioelectrical signals is sent into frequency range and choose module, frequency range is chosen module by detecting brain wave signal, choose monograph degree wherein and the signal of allowance and output to brain wave quantization modules, brain wave quantization modules adopts DSP process chip that the reception eeg signal of coming is carried out to preliminary conversion and processing, eeg signal is carried out to quantification treatment, and the eeg signal after quantizing is sent into judge module, judge module is provided with the value of tired signal sets, when eeg signal exceeds this value, be judged as fatigue state, signal is sent into Bluetooth transmission module, send the signal of drive feedback device.
The reception eeg signal of coming is carried out preliminary conversion and processing by the DSP process chip of described brain wave quantization modules, input signal is passed through to low-pass filter, pass through again median algorithm peace mean algorithm, adopt again the method for time integral, calculated a notice and the numerical value that loosens power every several seconds.Eeg signal is carried out to quantification treatment.
As shown in Figure 3, described ultramagnifier 2 comprises upper shell 21, lower house 22, feedback pcb board 23, battery 15 and wrist strap 24, and wrist strap 24 fastens by button and lower house 22; Wrist strap 24 is provided with hard contact 25, and hard contact 25 is electrically connected with feedback pcb board 23; Feedback pcb board 23 is arranged in the cavity between upper shell 21, lower house 22, battery 15 is arranged on lower house, and be covered with battery cover board 26, on feedback pcb board 23, be also provided with the voltage stimulation circuit of Bluetooth Receiver and the bionical electric current of low frequency, and be provided with Bluetooth pairing button 27.When the eeg signal of brain wave quantization modules exceeds setting value, judge module is judged as fatigue state, signal is sent into Bluetooth transmission module, Bluetooth Receiver signal on ultramagnifier 2, the circuit of feedback pcb board 23 receives signal, driving voltage stimulation circuit, by hard contact on wrist strap 25, produces and stimulates collaterals of human.
Principle of work of the present invention is as follows: see Fig. 4 and Fig. 5, this feedback body 2 is with bluetooth receiver module, by triggering Bluetooth pairing button 27, match with bluetooth receiver module, when after successful matching, this bluetooth receives the specific tired signal of transmitter module and is sent to the MCU of ultramagnifier, this MCU can control corresponding IO mouth the low voltage signal of power supply is boosted to the high electric field pulse that human body sensing arrives, and this electric pulse triggers certain frequency, and frequency is higher, pulse is more frequent, and human body sensing is also more obvious.In the time of tired blackout, interrupt boosting of this IO.Human body can not sense electro photoluminescence yet.
When turning on the power switch, the power supply IC of power supply boosts into cell voltage the 3.3V voltage that can use for this equipment, simultaneously, this power supply contains low-voltage measuring ability, in the time that cell voltage is inadequate, corresponding LED light can light, reminding user charging or replacing battery.Power supply is to human body signal Acquisition Circuit, obtain human body brain wave signal by the electrode of forehead electrode and ear-lobe, then in signals collecting MUC, brain wave signal is carried out to filter and amplification, convert corresponding δ, θ, α, μ, β, γ ripple to, dsp chip utilizes the electric signal of this MCU output, it is carried out to modeling, then analyze contrast, judge whether whether this user is in fatigue state.If detect, user is fatigue state, and this dsp chip can be controlled hummer and sound the alarm, and meanwhile, it also can send one group of specific instruction to Bluetooth transmission circuit.Bluetooth transmission module sends out this instruction again.
In a word, fatigue detecting ultramagnifier of the present invention, can as cap, be worn on front, and folder ear detection body is clipped in to ear, detector can be clipped on shade by clamp, can direct-detection eeg signal, folder ear is surveyed body and can be clamped on ear-lobe, also can conveniently detect eeg signal, when the eeg signal of the brain wave quantization modules of detecting device exceeds setting value, judge module is judged as fatigue state, signal is sent into Bluetooth transmission module, Bluetooth Receiver signal on ultramagnifier, the circuit of feedback pcb board receives signal, driving voltage stimulation circuit, by hard contact on wrist strap, collaterals of human is produced and stimulated.Can fine alleviation driver fatigue, it takes fatigue-relieving measure to make to impel driver.
The above is only to preferred embodiment of the present invention; not scope of the present invention is limited; therefore design under the prerequisite of spirit not departing from the present invention; the equivalence that the common engineering technical personnel in this area do structure of the present invention, feature and principle changes or decorates, and all should fall in the protection domain of the present patent application patent.
Claims (4)
1. the fatigue detecting ultramagnifier of a wear-type, it comprises detector and ultramagnifier, detector is sewn on cap body, it is characterized in that: detector comprises clamp, upper casing, lower casing and is arranged on upper casing and main PCB plate and the battery of lower casing, clamp peripheral hardware one torsion spring and upper casing are hinged, survey body with sensing point and folder ear that main PCB plate is electrically connected, on main PCB plate, be provided with bluetooth transmitters, and be provided with Bluetooth key on lower casing.
2. the fatigue detecting ultramagnifier of wear-type according to claim 1, it is characterized in that: described main PCB plate is provided with control circuit, control circuit comprises the information acquisition module to human brain brain wave, signal filtering and amplification module, frequency range is chosen module, brain wave quantization modules, judge module and Bluetooth transmission module, wherein signal acquisition module is surveyed body by front sensing point and folder ear, the eeg signal of human brain is gathered, and send gathering the human brain brain wave coming into signal filtering and amplification module, by signal filtering and amplification module, eeg signal is carried out to filter amplifying processing, and bioelectrical signals is sent into frequency range and choose module, frequency range is chosen module by detecting brain wave signal, choose monograph degree wherein and the signal of allowance and output to brain wave quantization modules, brain wave quantization modules adopts DSP process chip that the reception eeg signal of coming is carried out to preliminary conversion and processing, eeg signal is carried out to quantification treatment, and the eeg signal after quantizing is sent into judge module, judge module is provided with the value of tired signal sets, when eeg signal exceeds this value, be judged as fatigue state, signal is sent into Bluetooth transmission module, send the signal of drive feedback device.
3. the fatigue detecting ultramagnifier of wear-type according to claim 2, it is characterized in that: the reception eeg signal of coming is carried out preliminary conversion and processing by the DSP process chip of described brain wave quantization modules, input signal is passed through to low-pass filter, pass through again median algorithm peace mean algorithm, adopt again the method for time integral, calculated a notice and the numerical value that loosens power every several seconds, eeg signal is carried out to quantification treatment.
4. the fatigue detecting ultramagnifier of wear-type according to claim 1, is characterized in that: described ultramagnifier comprises upper shell, lower house, feedback pcb board, battery and wrist strap, and wrist strap fastens by button and lower house; Wrist strap is provided with hard contact, and hard contact is electrically connected with feedback pcb board; Feedback pcb board is arranged in the cavity between upper shell, lower house, battery is arranged on lower house, and be covered with battery cover board, on feedback pcb board, be also provided with the voltage stimulation circuit of Bluetooth Receiver and the bionical electric current of low frequency, when the eeg signal of brain wave quantization modules exceeds setting value, judge module is judged as fatigue state, signal is sent into Bluetooth transmission module, Bluetooth Receiver signal on ultramagnifier, the circuit of feedback pcb board receives signal, driving voltage stimulation circuit, by hard contact on wrist strap, produces and stimulates collaterals of human.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310563947.9A CN104063993B (en) | 2013-11-14 | 2013-11-14 | Head-mounted fatigue detection feedback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310563947.9A CN104063993B (en) | 2013-11-14 | 2013-11-14 | Head-mounted fatigue detection feedback device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104063993A true CN104063993A (en) | 2014-09-24 |
| CN104063993B CN104063993B (en) | 2017-02-15 |
Family
ID=51551681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310563947.9A Expired - Fee Related CN104063993B (en) | 2013-11-14 | 2013-11-14 | Head-mounted fatigue detection feedback device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104063993B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104305964A (en) * | 2014-11-11 | 2015-01-28 | 东南大学 | Head mounted fatigue detector and method |
| CN104574818A (en) * | 2014-12-31 | 2015-04-29 | 东莞龙昌数码科技有限公司 | Fatigue driving detection and elimination method applied to mobile phone |
| CN104637245A (en) * | 2014-12-31 | 2015-05-20 | 东莞龙昌数码科技有限公司 | Fatigue detection feedback device with integrated structure |
| CN104700572A (en) * | 2015-03-24 | 2015-06-10 | 安徽师范大学 | Intelligent headrest capable of preventing fatigue driving and control method of headrest |
| CN105205989A (en) * | 2015-08-18 | 2015-12-30 | 奇瑞汽车股份有限公司 | Intelligent fatigue driving prevention headrest |
| CN105303775A (en) * | 2015-11-25 | 2016-02-03 | 欧俊麟 | Anti-doze micro electric shock reminder |
| CN105336104A (en) * | 2015-11-10 | 2016-02-17 | Tcl集团股份有限公司 | Wearable device with anti-fatigue driving function, and anti-fatigue driving method |
| CN105700690A (en) * | 2016-03-31 | 2016-06-22 | 云南省交通科学研究所 | Mobile platform based electroencephalogram multi-media control system |
| CN107862833A (en) * | 2017-11-27 | 2018-03-30 | 贵州大学 | A kind of driver driving intelligent reminding object wearing device |
| CN108742661A (en) * | 2018-03-27 | 2018-11-06 | 深圳市优云医疗科技有限公司 | Safe driving cervical physical therapy device and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010054963A1 (en) * | 1998-08-19 | 2001-12-27 | Gee (Hk) Company Limited | Driving aid |
| CN201070353Y (en) * | 2007-04-16 | 2008-06-11 | 孙军 | On-line early warning system for exhausted working |
| CN201210338Y (en) * | 2008-06-13 | 2009-03-18 | 王钦兵 | Head wearing intelligent prompter |
| US20090322512A1 (en) * | 2008-06-25 | 2009-12-31 | Frederick Larry D | Personal alarm device for headwear for proximity detection |
| WO2012125596A2 (en) * | 2011-03-12 | 2012-09-20 | Parshionikar Uday | Multipurpose controller for electronic devices, facial expressions management and drowsiness detection |
-
2013
- 2013-11-14 CN CN201310563947.9A patent/CN104063993B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010054963A1 (en) * | 1998-08-19 | 2001-12-27 | Gee (Hk) Company Limited | Driving aid |
| CN201070353Y (en) * | 2007-04-16 | 2008-06-11 | 孙军 | On-line early warning system for exhausted working |
| CN201210338Y (en) * | 2008-06-13 | 2009-03-18 | 王钦兵 | Head wearing intelligent prompter |
| US20090322512A1 (en) * | 2008-06-25 | 2009-12-31 | Frederick Larry D | Personal alarm device for headwear for proximity detection |
| WO2012125596A2 (en) * | 2011-03-12 | 2012-09-20 | Parshionikar Uday | Multipurpose controller for electronic devices, facial expressions management and drowsiness detection |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104305964A (en) * | 2014-11-11 | 2015-01-28 | 东南大学 | Head mounted fatigue detector and method |
| CN104574818A (en) * | 2014-12-31 | 2015-04-29 | 东莞龙昌数码科技有限公司 | Fatigue driving detection and elimination method applied to mobile phone |
| CN104637245A (en) * | 2014-12-31 | 2015-05-20 | 东莞龙昌数码科技有限公司 | Fatigue detection feedback device with integrated structure |
| CN104574818B (en) * | 2014-12-31 | 2017-01-18 | 东莞龙昌数码科技有限公司 | Fatigue driving detection and elimination method applied to mobile phone |
| CN104637245B (en) * | 2014-12-31 | 2018-01-16 | 东莞龙昌数码科技有限公司 | A kind of fatigue detecting ultramagnifier of integrative-structure |
| CN104700572A (en) * | 2015-03-24 | 2015-06-10 | 安徽师范大学 | Intelligent headrest capable of preventing fatigue driving and control method of headrest |
| CN105205989A (en) * | 2015-08-18 | 2015-12-30 | 奇瑞汽车股份有限公司 | Intelligent fatigue driving prevention headrest |
| CN105336104A (en) * | 2015-11-10 | 2016-02-17 | Tcl集团股份有限公司 | Wearable device with anti-fatigue driving function, and anti-fatigue driving method |
| CN105303775A (en) * | 2015-11-25 | 2016-02-03 | 欧俊麟 | Anti-doze micro electric shock reminder |
| CN105700690A (en) * | 2016-03-31 | 2016-06-22 | 云南省交通科学研究所 | Mobile platform based electroencephalogram multi-media control system |
| CN107862833A (en) * | 2017-11-27 | 2018-03-30 | 贵州大学 | A kind of driver driving intelligent reminding object wearing device |
| CN108742661A (en) * | 2018-03-27 | 2018-11-06 | 深圳市优云医疗科技有限公司 | Safe driving cervical physical therapy device and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104063993B (en) | 2017-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104063993A (en) | Head-mounted fatigue detection feedback device | |
| CN101976495B (en) | Fatigue driving detection system and method | |
| CN205405810U (en) | Driver fatigue detection alarm system based on brain wave | |
| CN105336104A (en) | Wearable device with anti-fatigue driving function, and anti-fatigue driving method | |
| CN103948394A (en) | Fatigue driving detecting system and fatigue relief device | |
| CN103680066A (en) | Eye-frame type fatigue detection feedback device | |
| CN211432867U (en) | Driver safety driving monitoring devices | |
| CN110236576A (en) | A kind of driver's acquiring brain waves and analysis system based on data fusion | |
| CN203597404U (en) | Smoking quitting device with forced warning function | |
| CN203941605U (en) | The device of vision protection | |
| CN205144578U (en) | Tired guardianship massage appearance of wear -type brain electricity | |
| CN205405809U (en) | Driver fatigue detection alarm system based on intelligence wrist -watch | |
| CN211427470U (en) | Fatigue driving reminding device | |
| CN205247566U (en) | Wearing formula sleep vigilance device | |
| CN204375115U (en) | A kind of fatigue detecting ultramagnifier of integrative-structure | |
| CN104637245A (en) | Fatigue detection feedback device with integrated structure | |
| CN205621235U (en) | Car driving safety reminding device | |
| CN203882416U (en) | Frame-type fatigue-detecting feedback device | |
| CN108903958A (en) | Driver attention evaluates early warning system and its implementation method | |
| CN112233378A (en) | On-vehicle driver fatigue detecting system and dress warning bracelet thereof | |
| CN208325355U (en) | A kind of steering wheel and the vehicles | |
| CN110435749A (en) | The anti-sleeping direction indicators cover of one kind | |
| CN203849834U (en) | Driving fatigue alerting device | |
| CN203005247U (en) | Safe traveling system based on pulse signals | |
| CN203882415U (en) | Feedback device for fatigue detecting instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20170215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |