CN103793944A - On board unit wake-up circuit and wake-up method thereof - Google Patents
On board unit wake-up circuit and wake-up method thereof Download PDFInfo
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- CN103793944A CN103793944A CN201210422525.5A CN201210422525A CN103793944A CN 103793944 A CN103793944 A CN 103793944A CN 201210422525 A CN201210422525 A CN 201210422525A CN 103793944 A CN103793944 A CN 103793944A
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Abstract
The present invention relates to an on board unit wake-up method. The on board unit wake-up method comprises the following steps of presetting a position list of road side units; sampling to obtain the location information of a current on board unit; comparing the position of the on board unit with the position of the closest road side unit, when the distance between the on board unit and the closest road side unit is less than a preset value, starting a wake-up function, and when the distance between the on board unit and the closest road side unit is greater than the preset value, closing the wake-up function. According to the present invention, the mis-wake up can be reduced effectively.
Description
Technical field
The present invention relates to a kind of Fare Collection System Vehicle mounted station waken system, particularly a kind of Vehicle mounted station wake-up circuit and awakening method thereof that reduces false wake-up.
Background technology
Along with the high speed development of highway and intelligent transportation cause, traditional manual toll collection system more and more can not meet people for quick, accurate, energy-conservation, the safe requirement of expressway tol lcollection.Like this, the automatic electronic charging system of a new generation grows up gradually.It is subject to liking of people, and has occupied market gradually with quick, accurate, energy-conservation, safety.Since GB ETC (Electronic Toll Collection, electronic charging system without parking) system formation standard in 2007, the main provinces and cities of China coast all start to have installed no-stop charging system as Beijing, Shanghai etc.
This automatic fare collection system of class is also used in the aspect such as Free-flow traffic administration and parking fee collective system in city, and its application prospect is also among constantly expanding.
In ETC system, Vehicle mounted station is as the independence of a low-power consumption with truck system, and its power supply does not generally adopt vehicle power, but the battery that adopts Vehicle mounted station to carry.Therefore, the low power dissipation design of Vehicle mounted station is a very important problem, and it is directly connected in battery powered situation, and Vehicle mounted station can use how many years and need not change battery.Such as, in the ETC system of GB highway of formulating for 2007, Vehicle mounted station is required, in the situation that only relying on battery and not changing, to use continuously more than 5 years.
First refer to Fig. 1, Fig. 1 is the use schematic diagram of an ETC system, and an ETC system is generally made up of road toll entrance, charge outlet.Station, roadside (Road Side Unit, RSU) is set at entrance and exit place, vehicle during through gateway RSU and the Vehicle mounted station (On board Unit, OBU) installed with car communicate and automatically completing the transaction registration clearance of deducting fees.Therefore OBU must be in the holding state that can wake up at any time.
The false wake-up that various undesired signals are brought is the significant problem that GB OBU faces for a long time. on the one hand, often can be increased significantly power consumption by false wake-up, thereby reduce the life-span of battery, on the other hand, one of major reason that false wake-up Ye Shilin road disturbs and other maloperations occur.
Although can adopt stricter detection means in the design of wake-up circuit, a but restriction due to power consumption, complicated detection algorithm often can not be realized, on the other hand, although strict detection has reduced the generation of false wake-up, but can improve the loss of OBU to real wake-up signal, thereby cause the decline of Transaction Success rate.
On the other hand, along with the development of intelligent transportation and Automobile Electronic Industry, on car-mounted terminal, the fusion of various functions has become a trend.OBU function and the car-mounted terminal with GPS (Global Positioning System, GPS) or other movable positioning systems are designed together and started to occur.Like this, also make to utilize GPS positioning function to solve false wake-up problem and become possibility.
Summary of the invention
The object of the invention is to consider that existing Fare Collection System Yi Yinche causes station, non-roadside signal to produce false wake-up and increases Vehicle mounted station power consumption and shorten Vehicle mounted station battery life and cause the problem of other maloperations and provide a kind of movable positioning system that utilizes to assist Vehicle mounted station to reduce the method and apparatus of false wake-up long-time unlatching of wakeup unit.
In order to achieve the above object, the present invention is achieved in that provides a kind of Vehicle mounted station wake-up circuit, comprising: roadside station location list stores default roadside station location; Running fix unit, provides Vehicle mounted station positional information; Vehicle mounted station wakeup unit, can receive station, roadside wake-up signal when unlatching, Vehicle mounted station can be concluded the business with station, roadside; Microprocessor reads comparison Vehicle mounted station and roadside station location, according to the switch of comparative result control Vehicle mounted station wakeup unit.
Wherein, described microprocessor records and when Vehicle mounted station and roadside station location distance is less than preset value, opens wakeup unit.Microprocessor records and when Vehicle mounted station and roadside station location distance is greater than preset value, cuts out wakeup unit.Described microprocessor samples reads the Vehicle mounted station position of described running fix unit, Vehicle mounted station during away from station, roadside sampling interval become gradually greatly, during near station, roadside, sampling interval diminishes.Or Vehicle mounted station wakeup unit is closed after transaction completes.Microprocessor continues sampling vehicle microscope carrier position and itself and other roadside station location except the station, roadside that last sale is crossed is carried out to the comparison of aforementioned rule, and according to comparative result control wakeup unit.
The present invention also provides a kind of Vehicle mounted station awakening method, comprises the following steps: default roadside station location list; Current Vehicle mounted station positional information is obtained in sampling; Relatively Vehicle mounted station position and roadside station location, in the time that its distance is less than preset value, open arousal function, in the time that its distance is greater than preset value, close arousal function, described Vehicle mounted station position sampling, when away from station, roadside, sampling interval becomes greatly gradually, and during near station, roadside, sampling interval diminishes.Or arousal function is closed after having concluded the business in Vehicle mounted station and station, roadside.Next compare Vehicle mounted station and other roadside station location by aforementioned rule, and do not go up a roadside station location of having concluded the business.
The present invention's advantage is compared with prior art: the Vehicle mounted station positional information of obtaining by more default roadside station location information and movable positioning system, wake-up circuit is carried out to switch control, make in its most time when away from station, roadside in closed condition, thereby successfully utilize positioning function to solve false wake-up problem, also reduced the power consumption extending battery life of wakeup unit simultaneously.
Accompanying drawing explanation
Fig. 1 is the use schematic diagram of ETC system;
Fig. 2 is the circuit diagram of one embodiment of the invention;
Fig. 3 is workflow diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail:
As shown in Figure 2, Fig. 2 is the circuit diagram of one embodiment of the invention.In Fig. 2, highway owner should provide all relevant RSU list of position, should provide concrete coordinate, bidimensional or the three-dimensional of each RSU position in table.This list of locations can be stored in the storage unit of microprocessor, and can pass through more new data of network.
Running fix unit, is a gps system in the present embodiment, and the position coordinates of OBU can be provided continuously by certain speed, when away from a nearest RSU position, the sampling interval of OBU position can be larger, and during gradually near a nearest RSU position, sampling interval can be more and more closeer.Microprocessor can compare the sampling of OBU position and RSU list of locations item by item, in the time that bee-line is less than preset value, just signals and opens wakeup unit.
Vehicle mounted station wakeup unit, can receive station, roadside wake-up signal when unlatching, Vehicle mounted station can be concluded the business with station, roadside.Wakeup unit keeps wake-up states always after opening, if receive wake-up signal, just by the processing mode processing that does not add in the past positional information.After having concluded the business, come back to and treat wake-up states.In the meantime, the sampling of position and the calculating of distance are proceeded.Once find that distance is greater than a preset value, processor signals and cuts out wakeup unit.
Another kind of mode is to receive that when instruction has been concluded the business at station, roadside, wakeup unit closes.Now relatively Vehicle mounted station positional information and other roadside station location information of microprocessor, and the previous roadside station location information of no longer more having concluded the business.
In Fig. 2, microprocessor reads comparison Vehicle mounted station and roadside station location, according to the switch of comparative result control Vehicle mounted station wakeup unit.
Refer to Fig. 3, Fig. 3 is workflow diagram of the present invention.In Fig. 3, can see, first the Vehicle mounted station positional information that microprocessor samples gps system provides, and it and default roadside station location information list are compared, continue sampling and obtain Vehicle mounted station positional information if comparison result is greater than preset value, under initial conditions, now arousal function is closed, can be by false wake-up.If be less than preset value arousal function be unlocked, very fast vehicle will sail the covering position, launch site at station, a nearest roadside into, Vehicle mounted station can be waken up by this station, roadside and with it transaction.After having concluded the business, can there be two schemes, one continues to obtain Vehicle mounted station positional information as shown in Figure 3, now must be less than preset value and continue to keep arousal function opening, until vehicle sails out of station, former roadside, itself and Vehicle mounted station distance are greater than preset value, now close arousal function.Another program can be also to close arousal function after having concluded the business, flow process starts to obtaining Vehicle mounted station positional information again, different, what now compare is the position at the position at other stations, roadside rather than that station, roadside of just now concluding the business, and opens arousal function in the time that it is less than preset value.
Predeterminable range in the present invention can be to be slightly larger than or station, approximate roadside coverage distance.
Adopt in this way, due to the overwhelming majority time, OBU is in closed condition, so can be by false wake-up.And as long as RSU list of locations is accurately detailed, OBU can not miss waking up of receiving yet.
Those skilled in that art also can make combined deformation or step, module and replace in creation spirit of the present invention, and these are within according to creation spirit of the present invention, derivative various distortion must belong to protection scope of the present invention.
Claims (8)
1. a Vehicle mounted station wake-up circuit, is characterized in that it comprises:
Roadside station location list stores default roadside station location;
Running fix unit, provides Vehicle mounted station positional information;
Vehicle mounted station wakeup unit, can receive station, roadside wake-up signal when unlatching, Vehicle mounted station can be concluded the business with station, roadside;
Microprocessor reads comparison Vehicle mounted station and roadside station location, according to the switch of comparative result control Vehicle mounted station wakeup unit.
2. Vehicle mounted station wake-up circuit as claimed in claim 1, is characterized in that described microprocessor records when Vehicle mounted station and roadside station location distance is less than preset value, to open wakeup unit.
3. Vehicle mounted station wake-up circuit as claimed in claim 2, is characterized in that described microprocessor records when Vehicle mounted station and roadside station location distance is greater than preset value, to close wakeup unit.
4. the Vehicle mounted station wake-up circuit as described in claims 1 to 3 any one, it is characterized in that described microprocessor samples reads the Vehicle mounted station position of described running fix unit, Vehicle mounted station during away from station, roadside sampling interval become gradually greatly, during near station, roadside, sampling interval diminishes.
5. Vehicle mounted station wake-up circuit as claimed in claim 2, it is characterized in that described Vehicle mounted station wakeup unit closes after transaction completes, described microprocessor continues relatively Vehicle mounted station and other roadside station location except the station, roadside that last sale is crossed, and opens wakeup unit in the time that it is less than preset value.
6. a Vehicle mounted station awakening method, is characterized in that comprising the following steps:
Default roadside station location list;
Current Vehicle mounted station positional information is obtained in sampling;
Relatively arousal function is opened in Vehicle mounted station position and nearest roadside station location in the time that its distance is less than preset value, closes arousal function in the time that its distance is greater than preset value.
7. Vehicle mounted station awakening method as claimed in claim 6, is characterized in that described Vehicle mounted station position sampling, and when away from station, roadside, sampling interval becomes greatly gradually, and during near station, roadside, sampling interval diminishes.
8. a Vehicle mounted station awakening method, is characterized in that comprising the following steps:
Default roadside station location list;
Current Vehicle mounted station positional information is obtained in sampling;
Relatively arousal function is opened in Vehicle mounted station position and nearest roadside station location in the time that its distance is less than preset value, after its transaction completes, closes arousal function;
Continue relatively Vehicle mounted station and other roadside station location except the station, roadside that last sale is crossed, in the time that it is less than preset value, open arousal function.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210422525.5A CN103793944A (en) | 2012-10-30 | 2012-10-30 | On board unit wake-up circuit and wake-up method thereof |
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| CN201210422525.5A CN103793944A (en) | 2012-10-30 | 2012-10-30 | On board unit wake-up circuit and wake-up method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105933910A (en) * | 2016-06-21 | 2016-09-07 | 厦门大学 | Resource allocation method and base station |
| CN106488387A (en) * | 2015-08-31 | 2017-03-08 | 电信科学技术研究院 | A kind of method and apparatus opening transfer function |
| CN106507449A (en) * | 2015-09-07 | 2017-03-15 | 中兴通讯股份有限公司 | The control method of car networking communication and device |
| CN109559393A (en) * | 2017-09-27 | 2019-04-02 | 中国电信股份有限公司 | On board unit awakening method, device and vehicle carried electronic label device |
| CN112203255A (en) * | 2020-09-11 | 2021-01-08 | 北京万集科技股份有限公司 | Control method and system for on-board unit, storage medium, and electronic apparatus |
| CN112738768A (en) * | 2020-12-22 | 2021-04-30 | 北京万集科技股份有限公司 | Vehicle-mounted system and communication method thereof |
| CN113689582A (en) * | 2021-08-03 | 2021-11-23 | 广东中视信息科技有限公司 | ETC real-time bill broadcasting method, system, equipment and medium |
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| CN106507449B (en) * | 2015-09-07 | 2021-01-26 | 中兴通讯股份有限公司 | Control method and device for Internet of vehicles communication |
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| CN112738768B (en) * | 2020-12-22 | 2024-01-12 | 三川在线(杭州)信息技术有限公司 | Vehicle-mounted system and communication method thereof |
| CN113689582A (en) * | 2021-08-03 | 2021-11-23 | 广东中视信息科技有限公司 | ETC real-time bill broadcasting method, system, equipment and medium |
| CN113689582B (en) * | 2021-08-03 | 2023-06-16 | 广东中视信息科技有限公司 | ETC real-time bill broadcasting method, system, equipment and medium |
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Application publication date: 20140514 |