CN104167113A - Pedestrian-to-vehicle communication system - Google Patents
Pedestrian-to-vehicle communication system Download PDFInfo
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- CN104167113A CN104167113A CN201410205543.7A CN201410205543A CN104167113A CN 104167113 A CN104167113 A CN 104167113A CN 201410205543 A CN201410205543 A CN 201410205543A CN 104167113 A CN104167113 A CN 104167113A
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- 238000004891 communication Methods 0.000 title claims abstract description 114
- 230000005540 biological transmission Effects 0.000 claims abstract description 110
- 238000001514 detection method Methods 0.000 claims abstract description 52
- 238000012546 transfer Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/005—Traffic control systems for road vehicles including pedestrian guidance indicator
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Abstract
The purpose of the invention is to effectively suppress the power consumption of a pedestrain communication device in a support service in which a pedestrain, around whom vehicles are travelling is used as a target in the pedestrian-to-vehicle communication system. There is provided a pedestrian-to-vehicle communication system for performing communication between a vehicle communication device and a pedestrian communication device, and to notify a driver of the vehicle via a collision possibility of the vehicle and the pedestrian collide with each other when the possibility of collision is determined on the basis of the position information of the walker, which are acquired through communication. The pedestrian-to-vehicle communication system is characterized in that the pedestrian communication device comprises a battery used as a power source; a pedestrian position detection unit configured to detect a position of the pedestrian; a validity determination unit configured to determine a validity of the position information of the pedestrian; a transmission cycle setting unit configured to set a transmission cycle of the position information of the walker on the basis of the validity of the position information of the pedestrian determined by the validity determination unit.
Description
Technical field
The present invention relates to communication system between Pedestrians and vehicles, particularly between car workshop/bus/can suppress pedestrian in the drive support system of communicating by letter between Pedestrians and vehicles by communication system between the Pedestrians and vehicles of the current sinking of communicator.
Background technology
The drive support system of existing vehicle is by the input message of communicating by letter between the inter-vehicle communication/Pedestrians and vehicles of car inter-vehicle communication/road, determine whether the possibility of this vehicle and other vehicle, pedestrian impact, in the case of the possibility that is judged to be collision, control, make the output of the sound by calling attention to, the demonstration of portrait notify the driver of vehicle.
In this drive support system, the pedestrian that the Vehicular communication device carrying in vehicle and pedestrian hold with between communicator by communication system between the Pedestrians and vehicles of the exchange message of communicating by letter between Pedestrians and vehicles, have for example patent documentation 1 (JP 2009-217350 communique), the disclosed technology of patent documentation 2 (JP 2009-104414 communique).
Following technology is disclosed in patent documentation 1: approach and be equipped with the vehicle of communication system between Pedestrians and vehicles in the case of pedestrian, shorten the transmission cycle to vehicle, vehicle side is easy to early detection pedestrian, in addition, if according to having approaching vehicle from the communication information of vehicle, with demonstration, sound notification.
In addition, following technology is disclosed in patent documentation 2: pedestrian, with the residual capacity of battery of communicator during less than setting, extending the transmission cycle suppresses the power consumption of battery.
prior art document
patent documentation
Patent documentation 1: JP 2009-217350 communique
Patent documentation 2: JP 2009-104414 communique
Summary of the invention
the problem that invention will solve
But, in patent documentation 1, send with the transmission cycle of fixing approaching vehicle in the case of not having, therefore exist and cannot suppress to be built in the problem of pedestrian with the power consumption of the battery of communicator.
In addition, in patent documentation 2, only reduce time delay long hair in battery capacity and send the cycle, therefore the effect that suppresses power consumption is limited, and in the time that battery capacity reduces, under any situation, all extend the transmission cycle, therefore in the time needing as early as possible pedestrian's positional information, likely in the transmission of information, postpone.
Therefore, the object of the present invention is to provide a kind of pedestrian's communicator, taking near have a Vehicle Driving Cycle pedestrian in the support service of object, in the case of during pedestrian stops, the poor situation of GPS environment etc. support the necessity of service lower, by extending the transmission cycle or stopping sending and effectively suppress the power consumption of pedestrian with communicator.
for the scheme of dealing with problems
The present invention is communication system between Pedestrians and vehicles, the pedestrian that the Vehicular communication device that it carries in vehicle and pedestrian hold is with communicating between communicator, obtain pedestrian's positional information by communication, utilize this obtained pedestrian positional information to judge whether vehicle and pedestrian have the possibility of collision, in the time being judged as collision possible by the driver of this information notice vehicle, above-mentioned pedestrian's Vehicle Intercommunications System is characterised in that, above-mentioned pedestrian possesses with communicator: battery, and it is as power source; Pedestrian's position detection part, it detects pedestrian's position; Availability deciding portion, it judges the validity of pedestrian's positional information; And sending cycle configuration part, the validity of its pedestrian's who judges according to above-mentioned availability deciding portion positional information is set the transmission cycle of pedestrian's positional information.
invention effect
The present invention sets the transmission cycle of pedestrian's positional information according to the validity of pedestrian's positional information, therefore can maintain the validity of the drive support of communicating by letter between Pedestrians and vehicles, and can suppress the power consumption of pedestrian with communicator.
Brief description of the drawings
Fig. 1 is the system pie graph of communication system between Pedestrians and vehicles.(embodiment)
Fig. 2 is this vehicle illustrating with respect to turning right at the parting of the ways, the figure of the situation that pedestrian approaches, stops, leaving.(embodiment)
Fig. 3 is according to the process flow diagram in the situation in pedestrian's translational speed setting transmission cycle.(embodiment)
Fig. 4 be illustrate translational speed slow down at leisure and stop and situation about accelerating at leisure under the figure of variation in transmission cycle.(embodiment)
Fig. 5 be illustrate translational speed slow down rapidly and stop and situation about accelerating rapidly under the figure of variation in transmission cycle.(embodiment)
Fig. 6 is according to the process flow diagram in the situation in the accepting state setting transmission cycle of gps signal.(embodiment)
Fig. 7 is the figure that the setting in the transmission cycle in the situation that reduces, increases in gps signal piecewise is shown.(embodiment)
Fig. 8 is the figure that the setting in the transmission cycle in the situation that gps signal instantaneous interruption, moment reduce is shown.(embodiment)
Fig. 9 sets the process flow diagram in the situation in transmission cycle according to the number of units of carrying out the Vehicular communication device of communicating by letter between Pedestrians and vehicles.(embodiment)
Figure 10 is the figure that the setting in the transmission cycle in the situation that reduces, increases in the number of units piecewise of carrying out the Vehicular communication device of communicating by letter between Pedestrians and vehicles is shown.(embodiment)
Figure 11 is the figure that the setting of carrying out the transmission cycle in situation that the number of units instantaneous interruption, moment of the Vehicular communication device of communicating by letter between Pedestrians and vehicles reduce is shown.(embodiment)
description of reference numerals
1 vehicle
2 pedestrians
Communication system between 10 Pedestrians and vehicles
11 Vehicular communication devices
12 pedestrian's communicators
13 batteries
14 pedestrian's position detection parts
15 communication units
16 detecting units
17 information provide unit
24 communication units
25 these truck position information obtain unit
26 detecting units
27 vehicle-side units
28 information provide unit
29 collision possibility identifying units
Equipment on 33 tunnels
40 availability deciding portions
41 send cycle configuration part
42 speed calculating sections
43 accuracy of detection detection units
44 number of units calculating sections
Embodiment
Embodiments of the invention are below described with reference to the accompanying drawings.
embodiment
Fig. 1～Figure 11 illustrates embodiments of the invention.
On road, for example as shown in Figure 2, multiple vehicles 1, multiple pedestrian 2 move up in relatively approaching side sometimes.In this case, in vehicle 1, have: will turn right from a road 4 to other road 5 intersecting in the crossroad 3 of four crossway and this vehicle 1A of stopping and travelling and other vehicle 1B of coming at a road 4 in the mode that approaches this vehicle 1A.In pedestrian 2, have: crossing the crossing 6 of other road 5 intersecting with a road 4 pedestrian 2A, to cross a road 4 crossing 7 and the pedestrian 2B stopping on walkway 8, the pedestrian 2C that will enter near the buildings 9 walkway 8.
Between the Pedestrians and vehicles shown in Fig. 1, communication system 10, in this crossroad 3 taking the pedestrian 2A that crosses crossing 6 as object, is supported service to this vehicle 1A that will turn right.The pedestrian that the Vehicular communication device 11 that between Pedestrians and vehicles, communication system 10 is carried at vehicle 1 and pedestrian 2 hold is with communicating between communicator 12, in the case of being judged to be according to the pedestrian's 2 who utilizes communication to obtain positional information possibility that vehicle 1 and pedestrian 2 collide, the driver of notice vehicle 1.
Above-mentioned pedestrian possesses with communicator 12: battery 13, pedestrian's position detection part 14, communication unit 15, detecting unit 16, information as power source provide unit 17.
Above-mentioned pedestrian's position detection part 14 comprises GPS receiving circuit 18 and gps antenna 19, detects pedestrian 2 position.Above-mentioned communication unit 15 comprises between Pedestrians and vehicles communication antenna 21 between telecommunication circuit 20 and Pedestrians and vehicles, and the Vehicular communication device 11 of vehicle 1 between carry out communication between Pedestrians and vehicles, information be provided with the transmission cycle of regulation.Above-mentioned detecting unit 16 comprises G sensor, gyro sensor etc., detects various mobile messages of the pedestrian 2.Above-mentioned information provides unit 17 to comprise display unit (LED etc.) 22, hummer 23 etc., utilizes the lighting of display unit 22, piping of hummer 23 to provide information to pedestrian 2.
Above-mentioned Vehicular communication device 11 possesses: communication unit 24, this truck position information obtain unit 25, detecting unit 26, vehicle-side unit 27, information unit 28, collision possibility identifying unit 29 are provided.
Above-mentioned communication unit 24 comprises: between car workshop/bus/Pedestrians and vehicles between communication antenna 32 between communication antenna 31 and bus between telecommunication circuit 30, car workshop/Pedestrians and vehicles, and the Vehicular communication device 11 of other vehicle 1B, and the road of road 4,5 ground connection on equipment 33, pedestrian with communicating between communicator 12, obtain the information of other vehicle 1B, the transport information of road 4,5, pedestrian 2 information.Above-mentioned this truck position information obtains unit 25 and comprises GPS receiving circuit 34 and gps antenna 35, obtains the positional information of this vehicle 1A.
Above-mentioned detecting unit 26 comprises G sensor, gyro sensor etc., detects the various mobile messages of this vehicle 1A.Power supply, ground connection, signals of vehicles are input to Vehicular communication device 11 by above-mentioned vehicle-side unit 27.Above-mentioned information provides that unit 28 comprises display unit (LED etc.) 36, hummer 37, the vehicle speakers 39 that is connected with guider 38 etc., utilizes the sound of the piping of the lighting of display unit 36, hummer 37, vehicle speakers 39 to provide information to driver.
Above-mentioned collision possibility identifying unit 29 is judged the possibility of colliding with other vehicle 1B, pedestrian 2 according to obtain information unit 25, detecting unit 26, vehicle-side unit 27 obtaining from communication unit 24, this truck position information.Collision possibility identifying unit 29 is in the case of being judged to be this vehicle 1A and other vehicle 1B has the possibility of collision, in addition, in the case of being judged to be the possibility of this vehicle 1A and pedestrian 2A collision, provide unit 28 to notify the driver of this vehicle 1A by information.
Between this Pedestrians and vehicles, communication system 10 is in order to suppress the power consumption of pedestrian with the battery 13 of communicator 12, pedestrian with possessing availability deciding portion 40 and transmission cycle configuration part 41 in communicator 12.The validity of the pedestrian's 2 that pedestrian's position detection part 14 detects positional information is judged by availability deciding portion 40.The transmission cycle of pedestrian 2 positional information is set in transmission cycle configuration part 41 according to the validity of the pedestrian's 2 who is judged by availability deciding portion 40 positional information.Pedestrian 2 positional information is according to being sent to Vehicular communication device 11 by communication unit 15 by sending the transmission cycle of setting cycle configuration part 41.Vehicular communication device 11 is judged the possibility of colliding with pedestrian 2 according to the various information of the positional information that comprises the pedestrian 2 who receives.
When recover in the validity of the pedestrian's 2 who is judged by availability deciding portion 40 positional information above-mentioned transmission cycle configuration part 41, the transmission cycle while making pedestrian 2 the transmission period ratio of positional information common is short.
Above-mentioned pedestrian possesses the speed calculating section 42 of the translational speed that calculates pedestrian 2 with communicator 12.The validity of above-mentioned availability deciding 40 judgement of the translational speed according to the pedestrian 2 who is calculated by speed calculating section 42 pedestrians' 2 of portion positional information.
In addition, above-mentioned pedestrian possesses the accuracy of detection detection unit 43 of the accuracy of detection of judging pedestrian's position detection part 14 with communicator 12.The validity of pedestrian 2 positional information is judged by above-mentioned availability deciding portion 40 according to the accuracy of detection of pedestrian's position detection part 14 of being judged by accuracy of detection detection unit 43.
And above-mentioned pedestrian possesses the number of units calculating section 44 of the number of units that calculates the Vehicular communication device 11 communicating with communicator 12.The validity of above-mentioned availability deciding 40 judgement of the number of units according to the Vehicular communication device 11 being calculated by number of units calculating section 44 pedestrians' 2 of portion positional information.
The following describes effect.
As shown in Figure 2, at this vehicle 1A at the parting of the ways 3 turn right in the situation that, on road 4 to approach that the mode of this vehicle 1A is travelled and other vehicle 1B coming and the pedestrian 2A that crossing crossing 6 have and the possibility of this vehicle 1A collision.As shown in Figure 1, the pedestrian that the Vehicular communication device 11 that between Pedestrians and vehicles, communication system 10 is carried at vehicle 1 and pedestrian 2 hold is with communicating between communicator 12, in the case of being judged to be this vehicle 1A according to the pedestrian's 2 who utilizes communication to obtain positional information and pedestrian 2A has the possibility of collision, notify the driver of this vehicle 1A.
At this, with in communicator 12, in order to reduce the current sinking of battery 13, can consider to reduce the number of times (=prolongation transmission cycle) that utilizes communication unit 15 to send positional information pedestrian.Conventionally the transmission cycle that transmission cycle time is made as general pedestrian 2 translational speed or the regulation corresponding with walking speed at ordinary times by learning to set (is designated as " normal period " below.)。Pedestrian sends to Vehicular communication device 11 by predefined this normal period by information when common with communicator 12.
In the case of setting pedestrian according to pedestrian 2 translational speed with the transmission cycle of communicator 12, the lower situation of the possibility of the time that pedestrian 2 stops (will stopping) walking in colliding with vehicle 1.Therefore in the situation that pedestrian 2 stops, even if can think that the pedestrian who holds from the pedestrian 2 of object who becomes the service of support is set as to normal period when common with the transmission cycle of communicator 12 is long, with the judgement of the collision possibility of vehicle 1 on do not have problem yet.(can in stopping, setting up stop mark wait notify pedestrian state.)
But, in the time that pedestrian 2 starts walking again, in order to make vehicle 1 around promptly detect pedestrian 2 existence, at short notice the transmission cycle is set as shortlyer than normal period, afterwards, in the time returning to common translational speed, revert to normal period.In addition, pedestrian 2 " stops " referring to that translational speed is that the following or direction of speed (for example, per minute make a move the movement of degree) that stops of regulation changes (rotating at same position), if this state is made as and stops.Pedestrian 2 translational speed is calculated according to the information of pedestrian's position detection part 14 or detecting unit 16 by speed calculating section 42.
As shown in Figure 3, between Pedestrians and vehicles, communication system 10 is in the case of setting the transmission cycle (100) according to pedestrian 2 translational speed, the translational speed (101) that is calculated pedestrian by pedestrian by the speed calculating section 42 of communicator 12, judges whether translational speed reduces (102).
In the situation that this judges (102) for "No", transfer to aftermentioned judgement (108).In the situation that this judges (102) for "Yes", judge whether the minimizing of translational speed has continued the stipulated time more than (t1) (103).
In the situation that this judges (103) for "No", return to judgement (102).In the situation that this judges (103) for "Yes", judge whether translational speed is stopping below speed (104) of specifying.
In the situation that this judges (104) for "No", according to the slip of translational speed, the transmission cycle is set as, than normal period long (105), returning to judgement (102).In the situation that this judges (104) for "Yes", judge translational speed is whether the state stopping below speed specifying has continued the stipulated time more than (t2) (106).
In the situation that this judges (106) for "No", return to judgement (104).In the situation that this judges (106) for "Yes", the transmission cycle is set as growing most (107), return to judgement (102).
Whether judge (102) of reducing in above-mentioned translational speed on the other hand,, for "No", judge whether translational speed increases (108).
In the situation that this judges (108) for "No", return to judgement (102).In the situation that this judges (108) for "Yes", judge that whether the transmission cycle is than normal period long (109).
In the situation that this judges (109) for "No", return to judgement (102).In the situation that this judges (109) for "Yes", judge whether the transmission cycle is to grow (110) most.
In the situation that this judges (110) for "No", transfer to aftermentioned judgement (112).In the situation that this judges (110) for "Yes", the transmission cycle is set as at the appointed time to (t3) shorter than normal period (111), whether the increase that judges translational speed has continued the stipulated time (t4) (112).
In the situation that this judges (112) for "No", return to judgement (102).In the situation that this judges (112) for "Yes", according to the increment rate of translational speed, the transmission cycle is set as than normal period long (113), judges whether at the appointed time (t5) stable (114) within the specific limits of translational speed.
In the situation that this judges (114) for "No", repeat this judgement (114).In the situation that this judges (114) for "Yes", the transmission cycle is set as to normal period (115), return to judgement (102).
As (1) below. (2). as shown in, carry out according to the setting in the transmission cycle of the translational speed of the pedestrian 2 shown in the process flow diagram of Fig. 3.
(1). as shown in Figure 4, slow down at leisure in pedestrian 2 translational speed and stop, be also to improve at leisure translational speed and walking while again starting walking, be judged to be to have reduced the stipulated time (t1) when above in the minimizing of the pedestrian's 2 who is calculated by speed calculating section 42 translational speed by availability deciding portion 40, the transmission cycle be set as longer than normal period by sending cycle configuration part 41 according to slip.And, the pedestrian's 2 who is calculated by speed calculating section 42 translational speed is judged to be with the stipulated time (t2) by availability deciding portion 40 more than, below stopping speed time, the transmission cycle is declined compared with normal period and be set as the longest by sending cycle configuration part 41.
In the time that the pedestrian's 2 who is calculated by speed calculating section 42 translational speed is judged to be again to start walking by availability deciding portion 40, in (t3), make the transmission cycle rise compared with normal period and be set as shorter by sending cycle configuration part 41 at the appointed time.Can make thus vehicle 1 around promptly detect pedestrian 2 starts mobile.The transmission cycle is set as shorter after, in the pedestrian's 2 that calculated by speed calculating section 42 translational speed, (t4) improved at leisure at the appointed time, the transmission cycle is declined compared with normal period and be set as long by sending cycle configuration part 41, until it is stable within the specific limits with the stipulated time (t5) to be judged to be translational speed by availability deciding portion 40, or become fixing speed above until be judged to be walking speed.The pedestrian's 2 who is calculated by speed calculating section 42 translational speed be judged as at the appointed time (t5) stable within the specific limits after, make the transmission cycle return to normal period., send cycle configuration part 41 according to the plus-minus speed of walking speed and walking speed by setting the transmission cycle from the mode of multistage switching normal period.
(2). as shown in Figure 5, slow down rapidly in pedestrian 2 translational speed and stop, be also to improve rapidly translational speed and walking while again starting walking, stop completing at short notice from the pedestrian's 2 that calculated by speed calculating section 42 reducing to of translational speed, therefore being judged to be walking speed by availability deciding portion 40 when stopping that the speed following provisions time, (t2) was above, make the transmission cycle also decline and be set as the longest normal period when common quickly by sending cycle configuration part 41.
The pedestrian's 2 who is calculated by speed calculating section 42 in basis translational speed, be judged to be, in situation that pedestrian 2 started walking again, in (t3), to make the transmission cycle rise compared with normal period and be set as shorter at the appointed time by sending cycle configuration part 41 by availability deciding portion 40.Can make thus vehicle 1 around promptly detect pedestrian 2 starts mobile.The transmission cycle is set as shorter after, translational speed in the case of the pedestrian 2 that calculated by speed calculating section 42 has risen the stipulated time (t4) rapidly, the transmission cycle is declined compared with normal period and be set as growing calmly by sending cycle configuration part 41, until by availability deciding portion 40 be judged to be walking speed at the appointed time (t5) stable within the specific limits, or until be judged to be more than translational speed becomes fixing speed.Translational speed at the appointed time (t5) stable within the specific limits after, the transmission cycle is set as to normal period.
Like this, in pedestrian's Vehicle Intercommunications System 10, pedestrian according to the validity of the pedestrian's 2 who is judged by availability deciding portion 40 positional information, is set the transmission cycle of pedestrian 2 positional information with communicator 12 by transmission cycle configuration part 41.Therefore between Pedestrians and vehicles, communication system 10 can maintain the validity of the drive support of communicating by letter between Vehicular communication device 11 and the Pedestrians and vehicles of pedestrian with communicator 12, and can suppress the power consumption of pedestrian with communicator 12.
In addition, pedestrian with communicator 12 in the time that the validity of the pedestrian's 2 who is judged by availability deciding portion 40 positional information has been recovered, by sending cycle configuration part 41, the transmission cycle of pedestrian 2 positional information is set as to specified period (t3), the normal period that is compared to the transmission cycle when common is short.Between Pedestrians and vehicles, communication system 10 can quickly and reliably provide information with communicator 12 to Vehicular communication device 11 from pedestrian thus.
And pedestrian according to the pedestrian's 2 who is calculated by speed calculating section 42 translational speed, is judged the validity of pedestrian 2 positional information with communicator 12 by availability deciding portion 40, therefore can suitably distinguish the validity of pedestrian 2 positional information.Therefore between Pedestrians and vehicles, communication system 10 can maintain the validity of the drive support of communicating by letter between Vehicular communication device 11 and the Pedestrians and vehicles of pedestrian with communicator 12, and can suppress the power consumption of pedestrian with communicator 12.
In addition, above-mentioned pedestrian's Vehicle Intercommunications System 10 can be set the transmission cycle of pedestrian with communicator 12 according to the accepting state of the gps signal of pedestrian's position detection part 14.The poor place of the reception environment of the gps signal of being judged by accuracy of detection detection unit 43 pedestrian 2 (in the case of in the place, buildings of works arranged at top, inferior) walking, the position that cannot detect exactly pedestrian 2, therefore stops the transmission of pedestrian 2 positional information.
In the time again being started to receive gps signal by pedestrian's position detection part 14, sometimes become unstable in the position that again starts tight rear gps signal, therefore by sending 41 piecewises, cycle configuration part, shortened in the transmission cycle.In addition, can not receive gps signal and refer to the state of receivable satellite number less than regulation number.The regulation number that becomes the state that can not receive gps signal is generally less than 4, but also can change.
As shown in Figure 6, between Pedestrians and vehicles, communication system 10 is in the case of setting the transmission cycle (200) according to the accepting state of gps signal, calculate the receivable gps signal number of pedestrian's position detection part 14 (at ordinary times) (201) by pedestrian with the accuracy of detection detection unit 43 of communicator 12, judge whether at the appointed time gps signal becomes the state (moment reduction) (202) that the state (instantaneous interruption) that the short time can not receive or the receiving sensitivity that whether becomes the short time reduce in (t6).
In the situation that this judges (202) for "No", transfer to aftermentioned judgement (206).In the situation that this judges (202) for "Yes", whether the gps signal number that judgement receives reduces (203).
In the situation that this judges (203) for "No", transfer to aftermentioned judgement (209).In the situation that this judges (203) for "Yes", judge whether the minimizing of gps signal number has continued the stipulated time more than (t7) (204).
In the situation that this judges (204) for "No", return to judgement (202).In the situation that this judges (204) for "Yes", judge that whether gps signal number is less than the minimum that can not receive (205).
In the situation that this judges (205) for "No", the transmission cycle is set as longer than normal period according to the slip of gps signal number, or reduce the transmission cycle is set as, than normal period long (206), returning to judgement (202) according to the instantaneous interruption of gps signal, moment.Judge that at this (205) are for the "Yes" in the situation that, judge that gps signal counts the state of the minimum that deficiency can not receive (t8) (207) above that whether continued the stipulated time.
In the situation that this judges (207) for "No", return to judgement (205).In the situation that this judges (207) for "Yes", stop sending to Vehicular communication device 11 pedestrian 2 positional information (208), return to judgement (202).
Whether judge (203) of reducing at above-mentioned gps signal number on the other hand,, for "No", judge whether gps signal number increases (209).
In the situation that this judges (209) for "No", return to judgement (202).In the situation that this judges (209) for "Yes", judge that whether the transmission cycle is than normal period long (210).
In the situation that this judges (210) for "No", return to judgement (202).In the situation that this judges (210) for "Yes", judge whether the transmission of positional information is (211) in stopping.
In the situation that this judges (211) for "No", transfer to aftermentioned judgement (213).In the situation that this judges (211) for "Yes", the transmission cycle is set as at the appointed time to (t9) shorter than normal period (212), whether the increase state that judges gps signal number has continued the stipulated time (t10) (213).
In the situation that this judges (213) for "No", return to judgement (202).In the situation that this judges (213) for "Yes", according to the increment rate of gps signal number, the transmission cycle is set as than normal period long (214), judges whether at the appointed time (t11) stable (215) within the specific limits of gps signal number.
In the situation that this judges (215) for "No", repeat this judgement (215).In the situation that this judges (215) for "Yes", the transmission cycle is set as to normal period (216), return to judgement (202).
As (1) below. (2). as shown in, carry out shown in the process flow diagram of Fig. 6 according to the setting in the transmission cycle of the accepting state of gps signal number.
(1). as shown in Figure 7, the deterioration of the reception environment of the gps signal causing due to place walking that has works on top etc., the gps signal number that sometimes can be received by pedestrian's position detection part 14 reduces at leisure and can not receive, the gps signal number that can receive after enhancement of environment afterwards, increases at leisure.In this case, continue the stipulated time (t7) when above in the minimizing of the gps signal number of being judged by accuracy of detection detection unit 43, made transmission cycle piecewise compared with normal period of pedestrian 2 positional information reduce and be set as long by sending cycle configuration part 41.The state of counting the minimum that deficiency can not receive at gps signal becomes when the stipulated time, (t8) was above, stops sending.
Afterwards, the gps signal number that is judged to be to detect by accuracy of detection detection unit 43 in the case of again being started by pedestrian's position detection part 14 to receive has increased, start pedestrian 2 the transmission of positional information, by send cycle configuration part 41 make the transmission cycle at the appointed time (t9) rise compared with normal period and be set as shorter.Maintain the stipulated time (t10) at the increase state of gps signal number, the transmission cycle is set as longer than normal period, gps signal number at the appointed time (t11) stable within the specific limits after, the transmission cycle is set as to the normal period when common.(2). as shown in Figure 8, sometimes judge gps signal (t6) interior state (moment reduction) reducing as the state that can not receive (instantaneous interruption) of short time or as the receiving sensitivity of short time at the appointed time by accuracy of detection detection unit 43.In this case, make the transmission cycle reduce compared with normal period and be set as long by sending cycle configuration part 41.After the transmission cycle is set as growing, in the time being judged to be gps signal by accuracy of detection detection unit 43 (t11) stablizes within the specific limits at the appointed time, by sending cycle configuration part 41, the transmission cycle is set as to normal period.
Like this, in pedestrian's Vehicle Intercommunications System 10, pedestrian according to the validity of the pedestrian's 2 who is judged by availability deciding portion 40 positional information, is set the transmission cycle of pedestrian 2 positional information with communicator 12 by transmission cycle configuration part 41.Therefore between Pedestrians and vehicles, communication system 10 can maintain the validity of the drive support of communicating by letter between Vehicular communication device 11 and the Pedestrians and vehicles of pedestrian with communicator 12, and can suppress the power consumption of pedestrian with communicator 12.
In addition, pedestrian according to the accuracy of detection of the gps signal of pedestrian's position detection part 14 of being judged by accuracy of detection detection unit 43, is judged the validity of pedestrian 2 positional information with communicator 12 by availability deciding portion 40.Therefore between Pedestrians and vehicles, communication system 10 can suitably be distinguished the validity of pedestrian 2 positional information, the validity of the drive support of communicating by letter between Vehicular communication device 11 and the Pedestrians and vehicles of pedestrian with communicator 12 can be maintained, and the power consumption of pedestrian with communicator 12 can be suppressed.
And communication system 10 can basis be set the transmission cycle of pedestrian with communicator 12 with the number of units that pedestrian's position detection part 14 carries out the Vehicular communication device 11 of communicating by letter between Pedestrians and vehicles between Pedestrians and vehicles.Can think, set pedestrian with the transmission cycle of communicator 12 in the vehicle number of units of communicating by letter between the Pedestrians and vehicles sending according to vehicle 1, the state that cannot receive the electric wave of communicating by letter between Pedestrians and vehicles is completely that the vehicle 1 that is equipped with Vehicular communication device 11 does not travel around pedestrian's inter-vehicular communication device 12 or pedestrian 2 is communicating by letter electric wave environment move in poor place.
Therefore exceed schedule time in the case of receiving the electric wave of communicating by letter between Pedestrians and vehicles (being zero by the number of units that communicator 12 carries out the Vehicular communication device 11 of communicating by letter between Pedestrians and vehicles with the pedestrian who is detected by number of units calculating section 44), even if it is also no problem to extend the transmission cycle.But, in the situation that pedestrian is specifically designed to transmission with communicator 12, do not carry out the calculating of number of units of vehicle 1.
As shown in Figure 9, between Pedestrians and vehicles, communication system 10 is in the case of setting the transmission cycle (300) according to the number of units of carrying out the Vehicular communication device 11 of communicating by letter between Pedestrians and vehicles, calculated the number of units (at ordinary times) (301) of carrying out the Vehicular communication device 11 of communicating by letter between Pedestrians and vehicles by the number of units calculating section 44 of communicator 12 by pedestrian, whether the number of units that judgement calculates becomes the state (instantaneous interruption) that the short time can not calculate in (t12) at the appointed time, or whether becomes the state (moment reduction) (302) that number reduces that calculates of short time.
In the situation that this judges (302) for "No", transfer to aftermentioned judgement (306).In the situation that this judges (302) for "Yes", judge whether the number of units of Vehicular communication device 11 reduces (303).
In the situation that this judges (303) for "No", transfer to aftermentioned judgement (309).In the situation that this judges (303) for "Yes", judge whether the minimizing of the number of units of Vehicular communication device 11 has continued the stipulated time more than (t13) (304).
In the situation that this judges (304) for "No", return to judgement (302).In the situation that this judges (304) for "Yes", judge that whether the number of units of Vehicular communication device 11 is less than the minimum that can not receive (305).
In the situation that this judges (305) for "No", the transmission cycle is set as longer than normal period according to the slip of the number of units of Vehicular communication device 11, or reduce the transmission cycle is set as, than normal period long (306), returning to judgement (302) according to the instantaneous interruption of the number of units of Vehicular communication device 11, moment.In the situation that this judges (305) for "Yes", judge whether the number of units of Vehicular communication device 11 has continued the stipulated time more than (t14) (307) less than the state of the minimum that can not receive.
In the situation that this judges (307) for "No", return to judgement (305).In the situation that this judges (307) for "Yes", the transmission cycle is set as growing most (308), return to judgement (302).
Whether judge (303) of reducing in the number of units of above-mentioned Vehicular communication device 11 on the other hand,, for "No", judge whether the number of units of Vehicular communication device 11 increases (309).
In the situation that this judges (309) for "No", return to judgement (302).In the situation that this judges (309) for "Yes", judge that whether the transmission cycle is than normal period long (310).
In the situation that this judges (310) for "No", return to judgement (302).In the situation that this judges (310) for "Yes", judge whether the transmission cycle is to grow (311) most.
In the situation that this judges (311) for "No", transfer to aftermentioned judgement (313).In the situation that this judges (311) for "Yes", the transmission cycle is set as at the appointed time to (t15) shorter than normal period (312), judges whether the state of the number of units increase of Vehicular communication device 11 has maintained the stipulated time (t16) (313).
In the situation that this judges (313) for "No", return to judgement (302).In the situation that this judges (313) for "Yes", according to the increment rate of the number of units of Vehicular communication device 11, the transmission cycle is set as than normal period long (314), judges whether at the appointed time (t17) stable (315) within the specific limits of number of units of Vehicular communication device 11.
In the situation that this judges (315) for "No", repeat this judgement (315).In the situation that this judges (315) for "Yes", the transmission cycle is set as to normal period (316), return to judgement (302).
As (1) below. (2). as shown in, carry out the setting in the transmission cycle of the number of units of the Vehicular communication device 11 of communicating by letter between Pedestrians and vehicles according to carrying out shown in the process flow diagram of Fig. 9.
(1). as shown in figure 10, reduce gradually and become zero by the number of units that communicator 12 carries out the Vehicular communication device 11 of communicating by letter between Pedestrians and vehicles with pedestrian by number of units calculating section 44 is that detect, cannot receive the electric wave of communicating by letter between Pedestrians and vehicles completely, afterwards, the number of units of carrying out the Vehicular communication device 11 of communicating by letter between Pedestrians and vehicles increases, and sometimes again starts to receive.In this case, continue the stipulated time (t13) when above in the minimizing of the number of units of the Vehicular communication device 11 being calculated by number of units calculating section 44, made piecewise compared with the normal period of transmission cycle when common decline and be set as long by sending cycle configuration part 41.In the case of not receiving the time of the electric wave of communicating by letter between Pedestrians and vehicles becomes more than the stipulated time (t14), the transmission cycle is declined compared with normal period and be set as the longest by sending cycle configuration part 41.
Afterwards, in the case of the number of units of the Vehicular communication device 11 that calculated by number of units test section 43 increases, by send cycle configuration part 41 make the transmission cycle at the appointed time (t15) rise compared with normal period and be set as shorter, the state increasing in the number of units of Vehicular communication device 11 maintained the stipulated time (t16), the transmission cycle is set as longer than normal period, the number of units of Vehicular communication device 11 at the appointed time (t17) stable within the specific limits after, the transmission cycle is set as to the normal period when common.(2). as shown in figure 11, become sometimes at the appointed time the states (moment reduction) that number reduces that calculate of state (instantaneous interruption) that the short time can not calculate or short time in (t12) by number of units calculating section 44 number of units of carrying out the Vehicular communication device 11 of communicating by letter between Pedestrians and vehicles with communicator 12 with pedestrian that calculate.In this case, make the transmission cycle reduce compared with normal period and be set as long by sending cycle configuration part 41.After the transmission cycle is set as growing, the number of units of the Vehicular communication device 11 being detected by number of units calculating section 44 at the appointed time (t17) stable within the specific limits after, the transmission cycle is set as to the normal period when common.
Like this, in pedestrian's Vehicle Intercommunications System 10, pedestrian according to the validity of the pedestrian's 2 who is judged by availability deciding portion 40 positional information, is set the transmission cycle of pedestrian 2 positional information with communicator 12 by transmission cycle configuration part 41.Therefore between Pedestrians and vehicles, communication system 10 can maintain the validity of the drive support of communicating by letter between Vehicular communication device 11 and the Pedestrians and vehicles of pedestrian with communicator 12, and can suppress the power consumption of pedestrian with communicator 12.
In addition, pedestrian according to the number of units of the Vehicular communication device 11 being calculated by number of units calculating section 44, is judged the validity of pedestrian 2 positional information with communicator 12 by availability deciding portion 40.Therefore between Pedestrians and vehicles, communication system 10 can suitably be distinguished and the validity of pedestrian 2 positional information can maintain the validity of the drive support of communicating by letter between Pedestrians and vehicles, and can suppress the power consumption of pedestrian with communicator 12.
In addition, in the above-described embodiments, the gps signal number detecting according to pedestrian 2 translational speed, pedestrian's position detection part 14, the number of units of carrying out the Vehicular communication device 11 of communicating by letter between Pedestrians and vehicles are set the transmission cycle of pedestrian 2 positional information, but also can change the transmission cycle of similarly setting according to pedestrian 2 translational acceleration, pedestrian's 2 motion direction.In addition, for example, if can be deteriorated (by the precision of pedestrian's position detection part 14 detection position information that comprises GPS receiving circuit 18 and gps antenna 19, the situation about differing greatly of built-in sensors data and GPS information), can carry out the reply same with the situation that can not receive gps signal.
industrial utilizability
The present invention can suppress the pedestrian of communication system between Pedestrians and vehicles effectively with the power consumption of communicator, can not only be applied to brougham, can also be applied to two wheeler.
Claims (5)
1. communication system between a Pedestrians and vehicles, the pedestrian that the Vehicular communication device that it carries in vehicle and pedestrian hold is with communicating between communicator, obtain pedestrian's positional information by communication, utilize this obtained pedestrian positional information to judge whether vehicle and pedestrian have the possibility of collision, in the time being judged as collision possible by the driver of this information notice vehicle, above-mentioned pedestrian's Vehicle Intercommunications System is characterised in that, above-mentioned pedestrian possesses with communicator: battery, and it is as power source; Pedestrian's position detection part, it detects pedestrian's position; Availability deciding portion, it judges the validity of pedestrian's positional information; And sending cycle configuration part, the validity of its pedestrian's who judges according to above-mentioned availability deciding portion positional information is set the transmission cycle of pedestrian's positional information.
2. communication system between Pedestrians and vehicles according to claim 1, is characterized in that,
When recover in the validity of the pedestrian's who is judged by above-mentioned availability deciding portion positional information above-mentioned transmission cycle configuration part, the transmission cycle while making pedestrian's the transmission period ratio of positional information common is short.
3. according to communication system between claim 1 or Pedestrians and vehicles claimed in claim 2, it is characterized in that,
Above-mentioned pedestrian possesses the speed calculating section of the translational speed that calculates pedestrian with communicator, the validity of pedestrian's positional information is judged by above-mentioned availability deciding portion according to the pedestrian's who is calculated by above-mentioned speed calculating section translational speed.
4. according to communication system between claim 1 or Pedestrians and vehicles claimed in claim 2, it is characterized in that,
Above-mentioned pedestrian possesses the accuracy of detection detection unit of accuracy of detection of judging above-mentioned pedestrian's position detection part with communicator, the validity of pedestrian's positional information is judged by above-mentioned availability deciding portion according to the accuracy of detection of pedestrian's position detection part of being judged by above-mentioned accuracy of detection detection unit.
5. according to communication system between claim 1 or Pedestrians and vehicles claimed in claim 2, it is characterized in that,
Above-mentioned pedestrian possesses the number of units calculating section of the number of units that calculates the above-mentioned Vehicular communication device communicating with communicator, the validity of pedestrian's positional information is judged by above-mentioned availability deciding portion according to the number of units of the above-mentioned Vehicular communication device being calculated by above-mentioned number of units calculating section.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2013-102944 | 2013-05-15 | ||
| JP2013102944A JP6156732B2 (en) | 2013-05-15 | 2013-05-15 | Inter-vehicle communication system |
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| CN104167113A true CN104167113A (en) | 2014-11-26 |
| CN104167113B CN104167113B (en) | 2017-08-15 |
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| CN201410205543.7A Expired - Fee Related CN104167113B (en) | 2013-05-15 | 2014-05-15 | Communication system between Pedestrians and vehicles |
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| Country | Link |
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| JP (1) | JP6156732B2 (en) |
| CN (1) | CN104167113B (en) |
| DE (1) | DE102014006956B4 (en) |
| IN (1) | IN2014DE01270A (en) |
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Also Published As
| Publication number | Publication date |
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| CN104167113B (en) | 2017-08-15 |
| JP6156732B2 (en) | 2017-07-05 |
| DE102014006956B4 (en) | 2024-05-23 |
| DE102014006956A1 (en) | 2014-11-20 |
| IN2014DE01270A (en) | 2015-06-12 |
| JP2014225069A (en) | 2014-12-04 |
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