CN204066327U - A kind of traffic hazard monitoring alarm - Google Patents

A kind of traffic hazard monitoring alarm Download PDF

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Publication number
CN204066327U
CN204066327U CN201420425954.2U CN201420425954U CN204066327U CN 204066327 U CN204066327 U CN 204066327U CN 201420425954 U CN201420425954 U CN 201420425954U CN 204066327 U CN204066327 U CN 204066327U
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CN
China
Prior art keywords
acceleration transducer
microcontroller
setting value
accekeration
communication module
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Withdrawn - After Issue
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CN201420425954.2U
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Chinese (zh)
Inventor
李毅东
黄云彪
刘小强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING SECURITY INDUSTRY DEVELOPMENT GROUP Co Ltd
CHINA SILIAN INSTRUMENT GROUP Co Ltd
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CHONGQING SECURITY INDUSTRY DEVELOPMENT GROUP Co Ltd
CHINA SILIAN INSTRUMENT GROUP Co Ltd
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Priority to CN201420425954.2U priority Critical patent/CN204066327U/en
Application granted granted Critical
Publication of CN204066327U publication Critical patent/CN204066327U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

The first acceleration transducer that the utility model provides a kind of traffic hazard monitoring alarm to comprise microcontroller and be connected with microcontroller, second acceleration transducer and communication module, first acceleration transducer and the second acceleration transducer are respectively used to the first accekeration and the second accekeration that obtain guardrail vibration, the first setting value is provided with in first acceleration transducer, and the first accekeration can be compared with the first setting value, when the first accekeration is greater than the first setting value, wake microcontroller up, the second setting value is provided with in microcontroller, and the second accekeration can be compared with the second setting value, when the second accekeration is greater than the second setting value, start communication module and send warning message.The utility model can carry out principium identification to traffic hazard in time and send warning message to Surveillance center, powered battery, solves and to power a difficult problem at Highways ', by triggering mode, reduce power consumption.

Description

A kind of traffic hazard monitoring alarm
Technical field
The utility model belongs to detection of electrons and alarm technique field, particularly a kind of traffic hazard monitoring alarm.
Background technology
China's road fatalities continuous 10 years rank the first in the world, average every day, death toll about had 300 people, and fatal rate reaches 17%, exceeds nearly 9 times than 2% of developed country.After traffic hazard occurs, the place that particularly remote mountain areas is meagrely-populated with economizing national highway, common guardrail does not have to clash into and detects and warning function, and when guardrail is clashed into, staff is difficult to obtain message in time.Due to can not Timeliness coverage traffic hazard, report to the police in time, give first aid in time, traffic accident fatal rate be higher, and what statistics showed that rescue personnel arrived in 60 minutes only has 14.3%, about has 60% to die from and waits for rescue on the way.Collision guardrail accident often causes traffic hazard, after highway protecting plate collision accident occurs, especially meets when secondary traffic hazard occurs and often causes traffic congestion, and generally traffic control personnel can only the warning message of passive acquisition accident.Cause accident treatment personnel cannot arrive at rapidly scene cannot not arrive at yet before take to warn the safety-conscious way of other traffic participants in incident area.
At present, expressway usually adopts video monitoring monitoring traffic hazard, but due to cost high, be difficult to realize system-wide section and cover.Therefore need to design a kind of traffic hazard monitoring alarm, realize system-wide section with rational cost to cover, judge the order of severity had an accident, realize remote monitoring traffic hazard (particularly remote mountain areas and province's national highway), so that relevant department makes a response in time, thus arrive accident spot fast and accurately, prevent second accident from occurring, realize and alarm, to give first aid in time, reducing traffic hazard fatal rate object.
Need owing to adopting wired power supply at Highways ' to install a large amount of cable, cost is too high, inconvenient later maintenance.Because highway dust is large, solar panel surface can cover thick dust, solar panels efficiency is caused to reduce, so require often to carry out clean and maintenance, cause maintenance cost too high, solar powered mode is also not too applicable, therefore needs to select one to power monitoring device easily, simultaneously in order to make power supply have longer confession electric life, monitoring device is needed to be low-power consumption.
Utility model content
The deficiencies in the prior art in view of the above, the purpose of this utility model is to provide a kind of traffic hazard monitoring alarm and alarm method thereof, Real-Time Monitoring can be carried out to rail collision and send alerting signal to Surveillance center in time, realizing the low-power consumption of whole observation process simultaneously.
For achieving the above object and other relevant objects, the utility model provides a kind of traffic hazard monitoring alarm, comprising:
First acceleration transducer, is arranged on the guardrail of the highway section that need monitor, and for monitoring the acceleration of guardrail vibration when colliding, and obtains the first accekeration;
Second acceleration transducer, is arranged on the guardrail of the highway section that need monitor, and for monitoring the acceleration of guardrail vibration when colliding, and obtains the second accekeration;
Microcontroller, be connected with described first acceleration transducer and the second acceleration transducer respectively, the first setting value is suitable for be set in the first acceleration transducer, and start described second acceleration transducer or by standby for described second acceleration transducer, and be provided with the second setting value in described microcontroller, and be suitable for described second accekeration to compare with described second setting value;
Communication module, is connected with described microcontroller, is suitable for the control signal accepting described microcontroller, is started or close by microcontroller;
Wherein, described first acceleration transducer is suitable for the first accekeration to compare with described first setting value, and when the first accekeration is greater than described first setting value, triggers described microcontroller and enter duty, and described microcontroller is made to start the second acceleration transducer; First setting value is trigger thresholds, and the first acceleration transducer produces a trigger pulse, wakes microcontroller up and enters duty, and the work of microprocessor controls second acceleration transducer, enters sampling pattern, namely start the second acceleration transducer;
When the second accekeration is greater than described second setting value, described microcontroller judges traffic hazard occurs, and starts communication module, and sends control signal to communication module, makes described communication module send warning message;
The power consumption of described first acceleration transducer is less than the power consumption of described second acceleration transducer.
Due to existing acceleration transducer, measurement range low in energy consumption is narrower, sample rate is slightly slow, and the wide power consumption of measurement range is high, sample rate wants fast, general power consumption is within its sensing range of acceleration transducer of several microamperes is generally 8g, within power consumption is 200g its sensing range of acceleration transducer of more than 100 microamperes, and common its acceleration of rail collision accident be a few to tens of microamperes not etc., therefore only low-power consumption and the requirement compared with Wide measuring range can not be taken into account with an acceleration transducer, so the first acceleration transducer using low-power consumption sensing range narrow in the utility model and higher the second acceleration transducer of a wide power consumption of sensing range, microcontroller is in the holding state of low-power consumption, first acceleration transducer is in opening always, second acceleration transducer is in holding state, communication module is in power-off closed condition, so always in running order only have the first acceleration transducer, this first acceleration transducer plays Trigger Function, triggering microcontroller works, microprocessor controls second acceleration transducer work or standby, communication module is also need to trigger the work that is just energized, so greatly can reduce the power consumption of monitoring device system, device work is divided into standby mode and alarm mode two kinds of patterns, standby mode monitoring collision occurs, alarm mode process collision warning, due to the event that collision is very low probability, the standby mode working time is more than more than 99%, as long as ensure the super low-power consumption of standby mode, just overall power can be reduced, whole device can be arranged on guardrail in use.
As preferably: described microcontroller is also suitable for when detection the first accekeration, control described second acceleration transducer and microcontroller standby, control described communication module and be in power-off closed condition; When described second acceleration transducer is started working, control described communication module and be in power-off closed condition; After described warning message sends, control described communication module power-off, described second acceleration transducer is standby, the first acceleration transducer work, and described microcontroller is standby.
Off-position is in during communication module normality, consumption electric energy that can be minimum, carry out signal and launch that not carry out acceleration detection urgent, therefore be just energized after can triggering below startup, postpones within several seconds, to launch impact not quite, and the second acceleration transducer is in holding state, instead of off-position, because after the first acceleration transducer triggers, need to wake the second acceleration transducer up by microcontroller and enter mode of operation immediately, in order to avoid time delay causes measurement inaccurate.
Described first acceleration transducer and the second acceleration transducer are capacitance acceleration transducer.Described first acceleration transducer can replace with vibration transducer, adopts the mode measuring guardrail acceleration to judge its collision situation, also can be realized by the mode of displacement.
As preferably: also comprise power supply, Voltage stabilizing module and switch element, described power supply is connected with described microcontroller through Voltage stabilizing module, described switch element is connected between power supply and communication module, this switch element is also connected with microcontroller, microcontroller sends and controls signal to switch element, control energising and the power-off of communication module, switch element can adopt field effect transistor.
By triggering mode, solve low-power consumption problem, whole device can work more than 5 years in powered battery mode, adopt powered battery, overcome the deficiency that line of electric force power supply cost is high, later maintenance is inconvenient and solar powered, solve Highways ' power difficulty a difficult problem, reduce costs.
As preferably: described power supply is composed in parallel by lithium battery and complex capacitance, and described communication module is ZIGBEE, WIFI, RF433M or GPRS module, adopt radio communication.
As preferably: described second setting value is greater than described first setting value.
As preferably: described first setting value is 6g.
As preferably: described second setting value is 25g.
As preferably: the accekeration sensing range of described first acceleration transducer is less than or equal to 8g, and the accekeration sensing range of described second acceleration transducer is less than or equal to 200g; The accekeration sensing range of the first acceleration transducer also can be within tens acceleration of gravity, as long as the triggering that low-power consumption and realization detect can be ensured, the accekeration sensing range of certain second acceleration transducer also can expand in 1000g, can need according to detection and adjust.
G in 6g represents acceleration of gravity, and 6g represents 6 times of gravity acceleration value.First setting value is 6g, and the second setting value is 25g is the result drawn according to a large amount of sampling experimentals, and different sensors may have fluctuation in this value, but its principle is identical.
As mentioned above, the beneficial effects of the utility model are: 1, utilize acceleration transducer to monitor the feature such as vibration, displacement of guardrail when colliding, the damaged condition of indirect monitoring traffic hazard collision severity and guardrail.Can principium identification be carried out to traffic hazard by this device timely and send warning message to Surveillance center simultaneously, so that relevant departments process in time and rescue, thus avoid because can not Timeliness coverage accident occur with the accident of rescuing the people life property loss caused not in time.2, by triggering mode, solve low-power consumption problem, whole device can work more than 5 years in powered battery mode, adopt powered battery, solve Highways ' power difficulty a difficult problem, reduce costs.3, by radio communication, solve the difficult problem that wire communication mode needs independent wiring, reduce costs.
Accompanying drawing explanation
The electrical schematic diagram of embodiment of Fig. 1 for providing in the technical solution of the utility model.
Piece mark explanation
1 microcontroller
2 batteries
3 first acceleration transducers
4 second acceleration transducers
5 communication modules
6 Voltage stabilizing modules
7 switch elements
Embodiment
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this instructions can understand other advantages of the present utility model and effect easily.
Embodiment
As shown in Figure 1, the utility model provides a kind of traffic hazard monitoring alarm, comprising:
First acceleration transducer 3, is arranged on the guardrail of the highway section that need monitor, and for monitoring the acceleration of guardrail vibration when colliding, and obtains the first accekeration;
Second acceleration transducer 4, is arranged on the guardrail of the highway section that need monitor, and for monitoring the acceleration of guardrail vibration when colliding, and obtains the second accekeration;
Microcontroller 1, be connected with the first acceleration transducer 3 and the second acceleration transducer 4 respectively, be suitable for the first setting value being set in the first acceleration transducer 3, and start the second acceleration transducer 4 or by standby for the second acceleration transducer 4, and be provided with the second setting value in microcontroller 1, and be suitable for described second accekeration to compare with described second setting value;
Communication module 5, is connected with described microcontroller 1, is suitable for the control signal accepting described microcontroller 1, is started or close by microcontroller 1;
Wherein, described first acceleration transducer 3 is suitable for the first accekeration to compare with the first setting value, and when the first acceleration transducer 3 judges that the first accekeration is greater than the first setting value, first setting value is trigger thresholds, first acceleration transducer 3 produces a trigger pulse, wakes microcontroller 1 up and enters duty, and makes microcontroller 1 control the second acceleration transducer 4 to work, enter sampling pattern, namely start the second acceleration transducer 4;
When the second accekeration is greater than the second setting value, microcontroller 1 judges traffic hazard occurs, and starts communication module 5, and sends control signal to communication module 5, make communication module 5 send warning message;
The power consumption of the first acceleration transducer 3 is less than the power consumption of the second acceleration transducer 4.
Described microcontroller 1 is also suitable for when detection the first accekeration, controls the first acceleration transducer 3 and works, the second acceleration transducer 4 and microcontroller 1 standby, control communication module 5 be in power-off closed condition; When described second acceleration transducer 4 is started working, control described communication module 5 and be in power-off closed condition; After traffic hazard occurs in judgement, start communication module 5, send warning message; After described warning message sends, control communication module 5 power-off, described second acceleration transducer 4 is standby, and the first acceleration transducer 3 works, and described microcontroller 1 is standby.
Also comprise power supply 2, Voltage stabilizing module 6 and switch element 7, power supply 2 connects microcontroller 1 after Voltage stabilizing module 6, switch element 7 is connected between communication module 5 and voltage stabilizing chip micro-controller 1, microcontroller 1 can send and control signal to switch element 7, control energising and the power-off of communication module 5, power supply 2 is composed in parallel by lithium battery and complex capacitance.Voltage stabilizing module 6 adopts TPS78233 type voltage stabilizing chip, and this routine breaker in middle unit 7 selects field effect transistor (MOSFET), and its model is CSD25302Q2.
The power consumption of described first acceleration transducer 3 is less than the power consumption of described second acceleration transducer 4.In this example, communication module 5 is GPRS and the antenna be attached thereto and SIM card, can be the wireless communication modes such as ZIGBEE, WIFI, RF433M in other embodiments, first acceleration transducer 3 model adopts ADXL362, the second acceleration transducer 4 model adopts ADXL375, microcontroller 1 is single-chip microcomputer (MCU), and model is EFM32G222FX.
The working method of this traffic hazard monitoring alarm is: the first acceleration transducer 3 is always in running order, first acceleration transducer 3 Real-Time Monitoring also obtains the first accekeration of guardrail, the first accekeration obtained is compared with the first setting value be preset in the first acceleration transducer 3, first setting value is set to the first acceleration transducer 3 when initialization by MCU, if the first accekeration is less than the first setting value, then the first acceleration transducer 3 proceeds monitoring; If the first accekeration is more than or equal to the first setting value, first acceleration transducer 3 produces collision look-at-me to MCU, MCU enters normal mode of operation from standby mode when collision interrupt number being detected, and start the second acceleration transducer 4 being in holding state, carry out the measurement of accekeration, microcontroller 1 is communicated with the second acceleration transducer 4 by spi bus, the second accekeration recorded is sent to microcontroller 1 by the second acceleration transducer 4, and this second accekeration and the second setting value preset compare by microcontroller 1; If the second accekeration is less than the second setting value, then the first acceleration transducer 3 proceeds monitoring, does not perform other actions; If this second accekeration is more than or equal to the second setting value, then be judged to be traffic hazard, microcontroller 1 outputs control signals to switch element 7, communication module 5 is energized, namely GPRS, SIM card, antenna energising is started, send warning message, it is all standby that warning message sends the power-off of rear communication module 5, the second acceleration transducer 4 and microcontroller 1, carries out monitoring next time.Wherein the second setting value is the critical value determining whether traffic hazard, is drawn by many experiments, and the first setting value is generally several acceleration of gravity.
Due to existing acceleration transducer, measurement range low in energy consumption is narrower, sample rate is slightly slow, and the wide power consumption of measurement range is high, sample rate wants fast, general power consumption is within its sensing range of acceleration transducer of several microamperes is generally 8g, within power consumption is 200g its sensing range of acceleration transducer of more than 100 microamperes, and common its acceleration of rail collision accident be a few to tens of microamperes not etc., therefore only low-power consumption and the requirement compared with Wide measuring range can not be taken into account with an acceleration transducer, so the first acceleration transducer 3 using low-power consumption sensing range narrow in the utility model and higher the second acceleration transducer 4 of a wide power consumption of sensing range, microcontroller 1 is in the holding state of low-power consumption, first acceleration transducer 3 is in opening always, second acceleration transducer 4 is in holding state, communication module 5 is in power-off closed condition, so always in running order only have the first acceleration transducer 3, this first acceleration transducer 3 Trigger Functions, by wake-up microcontroller 1, microcontroller 1 wakes the second acceleration transducer 4 up and works, communication module 5 is also need to trigger the work that is just energized, so greatly can reduce the power consumption of monitoring device system, first acceleration transducer 3 is used as collision trigger switch, second acceleration transducer 4 is used as data sampling, pass through triggering mode, solve low-power consumption problem, whole device can be worked more than 5 years by powered battery mode, adopt powered battery, overcome line of electric force power supply cost high, the deficiency that later maintenance is inconvenient and solar powered, solve Highways ' power difficulty a difficult problem, reduce costs.
Device work is divided into standby mode and alarm mode two kinds of patterns, standby mode monitoring collision occurs, alarm mode process collision warning, due to the event that collision is very low probability, the standby mode working time is more than more than 99%, as long as ensure the super low-power consumption of standby mode, just can reduce overall power, whole device can be arranged on guardrail in use.
Wherein the second acceleration transducer 4 is in holding state and represents that the second acceleration transducer 4 internal sample circuit quits work, but mimic channel keeps power supply, its objective is in order to power consumption is dropped to minimum, can normal operating conditions be quickly recovered to when receiving enabling signal simultaneously.
Wherein microcontroller 1 is in holding state and represents that microcontroller 1 inside only has a small amount of circuit (such as interrupt wake-up circuit etc.) to keep power supply and normal operating conditions, other most of peripheral module power cutoff, its objective is and power consumption is dropped to minimum, simultaneously can quickly recover to normal operating conditions when receiving enabling signal.
Off-position is in during communication module 5 normality, consumption electric energy that can be minimum, carry out signal and launch that not carry out acceleration detection urgent, therefore be just energized after can triggering below startup, postpones within several seconds, to launch impact not quite, and the second acceleration transducer 4 is in holding state, instead of off-position, because after the first acceleration transducer 3 triggers, need to wake the second acceleration transducer 4 up and enter mode of operation immediately, in order to avoid time delay causes measurement inaccurate.
First acceleration transducer 3 described in this example is less than the capacitance acceleration transducer of 8g for sensing range, described second acceleration transducer 4 is the capacitance acceleration transducer of sensing range within 200g, wherein as the first acceleration transducer 3 of trigger switch, also vibration transducer etc. can be adopted.Adopt the mode measuring guardrail acceleration to judge its collision situation, also can be realized by the mode of displacement, just the equipment of displacement measurement costly, and the current element also not having can be used for measuring.
Therefore, the utility model has following beneficial effect: 1, utilize acceleration transducer to monitor the feature such as vibration, displacement of guardrail when colliding, the damaged condition of indirect monitoring traffic hazard collision severity and guardrail.Can principium identification be carried out to traffic hazard by this device timely and send warning message to Surveillance center simultaneously, so that relevant departments process in time and rescue, thus avoid because can not Timeliness coverage accident occur with the accident of rescuing the people life property loss caused not in time.2, by triggering mode, solve low-power consumption problem, whole device can work more than 5 years in powered battery mode, can extending battery life, adopts powered battery, solves a difficult problem for difficulty of powering at Highways ', reduces costs.3, by radio communication, solve the difficult problem that wire communication mode needs independent wiring, reduce costs.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model, any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or change.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.

Claims (9)

1. a traffic hazard monitoring alarm, is characterized in that, comprising:
First acceleration transducer, is arranged on the guardrail of the highway section that need monitor, and for monitoring the acceleration of guardrail vibration when colliding, and obtains the first accekeration;
Second acceleration transducer, is arranged on the guardrail of the highway section that need monitor, and for monitoring the acceleration of guardrail vibration when colliding, and obtains the second accekeration;
Microcontroller, be connected with described first acceleration transducer and the second acceleration transducer respectively, the first setting value is suitable for be set in the first acceleration transducer, and start described second acceleration transducer or by standby for described second acceleration transducer, and be provided with the second setting value in described microcontroller, and be suitable for described second accekeration to compare with described second setting value;
Communication module, is connected with described microcontroller, is suitable for the control signal accepting described microcontroller, is started or close by microcontroller;
Wherein, described first acceleration transducer is suitable for the first accekeration to compare with described first setting value, and when the first accekeration is greater than described first setting value, triggers described microcontroller and enter duty, and described microcontroller is made to start the second acceleration transducer;
When the second accekeration is greater than described second setting value, described microcontroller judges traffic hazard occurs, and starts communication module, and sends control signal to communication module, makes described communication module send warning message;
The power consumption of described first acceleration transducer is less than the power consumption of described second acceleration transducer.
2. a kind of traffic hazard monitoring alarm according to claim 1, it is characterized in that: described microcontroller is also suitable for when detection the first accekeration, control described second acceleration transducer and microcontroller standby, control described communication module and be in power-off closed condition; When described second acceleration transducer is started working, control described communication module and be in power-off closed condition; After described warning message sends, control described communication module power-off, described second acceleration transducer is standby, the first acceleration transducer work, and described microcontroller is standby.
3. a kind of traffic hazard monitoring alarm according to claim 1 and 2, it is characterized in that: also comprise power supply, Voltage stabilizing module and switch element, described power supply is connected with described microcontroller through Voltage stabilizing module, described switch element is connected between described power supply and described communication module, and described switch element is also connected with described microcontroller.
4. a kind of traffic hazard monitoring alarm according to claim 3, is characterized in that: described power supply is composed in parallel by lithium battery and complex capacitance.
5. a kind of traffic hazard monitoring alarm according to claim 1, is characterized in that: described communication module is ZIGBEE, WIFI, RF433 or GPRS module.
6. a kind of traffic hazard monitoring alarm according to claim 1, is characterized in that: described second setting value is greater than described first setting value.
7. a kind of traffic hazard monitoring alarm according to claim 1, is characterized in that: described first setting value is 6g.
8. a kind of traffic hazard monitoring alarm according to claim 1, is characterized in that: described second setting value is 25g.
9. a kind of traffic hazard monitoring alarm according to claim 1, it is characterized in that: the accekeration sensing range of described first acceleration transducer is less than or equal to 8g, the accekeration sensing range of described second acceleration transducer is less than or equal to 200g.
CN201420425954.2U 2014-07-30 2014-07-30 A kind of traffic hazard monitoring alarm Withdrawn - After Issue CN204066327U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104134311A (en) * 2014-07-30 2014-11-05 中国四联仪器仪表集团有限公司 Traffic accident monitoring alarm device and method
WO2016192189A1 (en) * 2015-06-01 2016-12-08 中兴通讯股份有限公司 Method and apparatus for reducing power consumption of terminal device
CN108180932A (en) * 2018-02-09 2018-06-19 杜勉 A kind of contamination accident emergency monitoring device
CN108717787A (en) * 2018-07-21 2018-10-30 芜湖英特杰智能科技有限公司 A kind of vehicle traffic accident emergency system based on Zigbee module
CN112572489A (en) * 2020-12-15 2021-03-30 神华铁路装备有限责任公司 Vehicle body acceleration monitoring device and system and 25t axle load aluminum alloy coal hopper car

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104134311A (en) * 2014-07-30 2014-11-05 中国四联仪器仪表集团有限公司 Traffic accident monitoring alarm device and method
CN104134311B (en) * 2014-07-30 2017-04-12 中国四联仪器仪表集团有限公司 Traffic accident monitoring alarm device and method
WO2016192189A1 (en) * 2015-06-01 2016-12-08 中兴通讯股份有限公司 Method and apparatus for reducing power consumption of terminal device
CN106292991A (en) * 2015-06-01 2017-01-04 中兴通讯股份有限公司 A kind of method and device reducing terminal unit power consumption
CN108089691A (en) * 2015-06-01 2018-05-29 中兴通讯股份有限公司 A kind of method and device for reducing terminal device power consumption
CN108180932A (en) * 2018-02-09 2018-06-19 杜勉 A kind of contamination accident emergency monitoring device
CN108180932B (en) * 2018-02-09 2018-12-18 浙江华港染织集团有限公司 A kind of contamination accident emergency monitoring device
CN108717787A (en) * 2018-07-21 2018-10-30 芜湖英特杰智能科技有限公司 A kind of vehicle traffic accident emergency system based on Zigbee module
CN112572489A (en) * 2020-12-15 2021-03-30 神华铁路装备有限责任公司 Vehicle body acceleration monitoring device and system and 25t axle load aluminum alloy coal hopper car

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