JP2907084B2 - Road condition notification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a vehicle, detects the current position of the vehicle, and displays an image as a position on a map including a road on which the vehicle travels.
Obtain situation information data about the road on which the vehicle travels,
The present invention relates to a road condition notifying device for notifying a condition represented by the condition information data.

[0002]

2. Description of the Related Art Various road running support systems for vehicles have been developed. One of such road running support systems is realized by image display means provided in a vehicle compartment forming section of the vehicle. For example, road map information in a predetermined area including the travel range of the vehicle is displayed as a road map image so that it can be visually grasped, and the current position of the vehicle is superimposed on the road map image. 2. Description of the Related Art There has been proposed a navigation apparatus that sequentially displays images and provides information on road travel to occupants. The provision of information to the occupant by such a navigation device is performed, for example, when the current position of the vehicle is detected, and the current position of the vehicle is superimposed on the road map image so as to be sequentially displayed. Contributes to the understanding of the running condition or running environment of the vehicle, or displays the planned running route or the set running route of the vehicle superimposed on the road map image, and the burden on the occupant in the vehicle operating state And so on.

[0003] The detection of the current position of a vehicle, which is performed when information is provided to an occupant by a navigation device, is detected, for example, by a global positioning system (GP), which is a radio navigation system using artificial satellites.
The GPS signal from the satellite in S) is used.
The detection of the current position of the vehicle using the GPS signal is performed with relatively high accuracy under the condition that the detectable range is set to an extremely wide range.

[0004] Further, as another method of a road running support system for vehicles, a plurality of signal transmitting means called "sign posts" are provided at a predetermined distance from each other along a main road or the like. And transmits a traffic information signal from each of them to provide position information, road use status information, weather information, and the like to vehicles receiving the traffic information signal transmitted from any of the signal transmission means. Vehicle Information Communication Services (VICS) is also known. To receive a traffic information signal under VICS, it is necessary to mount a receiving device different from a receiving device for receiving a GPS signal on a vehicle.

[0005]

There have been proposed navigation devices utilizing GPS signals as described above, and VICS or the like in which signal transmitting means called "signposts" are installed along the road. Even so, warnings to drivers of vehicles running on ordinary roads, for example, regarding road surface freezing, road obstacles, etc., except those temporarily installed under construction, etc. Usually, it is performed by a sign on a display board installed on a road on which a vehicle travels. The information on the warning display provided by such a display sign is based on data obtained in advance at a specific location on the road where the warning sign is installed.

[0006] However, the warning display provided by the display sign provided on the road may not be recognized by the driver of the vehicle running on the road in certain cases. That is, depending on the installation position and the installation state of the display sign, as well as the driving state and the traveling environment of the vehicle, it is difficult for the driver of the vehicle to read the display sign installed on the road properly. Will occur.

Therefore, a situation in which a vehicle traveling on a road frequently affects traveling such as traffic jam, road surface freezing, rainy weather slip, poor visibility in the evening, or the like, or
Before arriving at a specific road portion in which information data such as constantly occurring is obtained in advance, the driver of the vehicle, through the image display means or sound output means provided in the vehicle compartment forming section, It is desired that a warning corresponding to the previously obtained information data be obtained.

[0008] As described above, the driver of the vehicle can obtain a warning according to the information data obtained in advance for a specific road portion through the image display means or the sound output means provided in the cabin forming section. As described above, the road driving support realized by the navigation device using the GPS signal and the VICS or the like in which the signal transmitting means called "sign post" or the like is installed along the road as described above. It is conceivable to further develop the system and to obtain a device that meets the purpose under the system. However,
Heretofore, there is no device that enables a driver of a vehicle to obtain a warning about a specific road portion through an image display unit or a voice output unit provided in a vehicle compartment forming unit.

In view of the above, the present invention detects a current position of a vehicle, is mounted on a vehicle and is used, and displays an image representing the detected current position on an image of a map including a road on which the vehicle travels. in Moto comprising means for displaying superimposed on, along with obtaining status information data about the road on which the vehicle is traveling, the particular circumstances warning <br/> WARNING for the particular road section where the vehicle is heading is requiring selects information data, road conditions are subject warning <br/> wARNING on the status indicated by the selected specific status information data, eggplant as performed by the image display means or audio output means provided in the vehicle chamber forming portion An alarm device is provided.

[0010]

A road condition notifying device according to a first aspect of the present invention is mounted on a vehicle, detects a current position of the vehicle, and corresponds to the detected current position to a traveling range of the vehicle. A position detecting unit for transmitting current position data represented as a position on a road map, a map data supplying unit for transmitting map data representing at least a road on which a vehicle travels on the road map, and a road image represented by the map data. an image display unit for displaying an image indicating the current position of the vehicle indicated by the current position data, run for detecting a running environment of the vehicle
Traffic environment detector and a plurality of reservations on the road where the vehicle is traveling.
For each of the selected local parts
Situation information data representing the situation according to the environment was stored
A plurality of preselected locations from the memory means;
Obtains status information data about a specific area portion in which the vehicle is headed out of the band portions, resulting shaped status information data
Corresponding to the driving environment detected by the driving environment detector
And control means for selecting a specific situation information data and setting a state in which an advance warning is given regarding a situation represented by the selected specific situation information data.

A road condition notifying device according to a second aspect of the present invention is mounted on a vehicle and detects a current position of the vehicle.
The detected current position is determined by the road area corresponding to the travel range of the vehicle.
The position to send the current position data, which is expressed as the position on the figure
Location detector and at least the road on the road map where the vehicle is traveling
Map data supply unit that sends out map data representing the road
And the road image and current location data represented by the map data
And an image showing the current position of the vehicle represented by
Display and multiple pre-selections on the road on which the vehicle runs
Situation showing the status of each of the designated local parts
Traffic information receiving a traffic information signal containing the traffic data
And the traffic information signal received by the traffic information receiver
A data playback unit that plays back status information data from the
Multiple pre-selected from the situation information data obtained from the raw part
Specific area to which the vehicle is heading in the selected area
Select specific status information data for the part and select
Notice about the situation represented by specific situation information data
Control means for providing a state in which a warning is issued.
You.

According to the first aspect or the second aspect of the present invention,
In an example of such a road condition notification device, a specific condition
Notice warning about the situation that the information data shows is displayed as an image
Warning image display by the unit or sound provided on the vehicle
This is performed with a voice warning from the voice output unit.

[0013] Further, according to the first aspect of the present invention, there is provided a road shape.
In an example of the condition notification device, the traveling environment detection unit includes a vehicle
The driving environment of at least the weather, time zone, season
It is assumed that one of them is detected.

A first embodiment of the present invention configured as described above.
In the road condition notifying device according to the second aspect or the second aspect , the control means selects a plurality of pre-selected road conditions on the road on which the vehicle travels, the specific condition information data representing.
Notice regarding the status of a particular area portion in which the vehicle is heading of the territory portion warning, for example, notice warning image displayed by the image display unit provided in the vehicle, or preview audio by an audio output unit provided in the vehicle since it performed with a warning, before reaching the particular region part where the vehicle is it towards, elected status information data about a specific area portion thereof, is notice warning about the status indicated by the situation information data, vehicle It made as a notice warning image display or preview audio alert in the inner, the driver of the vehicle, a state where the advance notice warning image display or preview audio warning can be reliably recognized is taken. Therefore, the driver of the vehicle
Multiple pre-selected areas on the road on which the vehicle travels
Before reaching the particular region part where the vehicle is heading of the notice warning about a specific area portion thereof, securely grasped as notice warning image display or preview audio warning in the vehicle, it vehicle driving Will be able to be reflected.

[0015]

FIG. 1 shows an example of a road condition notifying device according to the present invention. 1 are all mounted on a vehicle. In particular, an image display unit among them is, for example, an instrument panel forming a front end portion of a vehicle compartment forming unit in the vehicle. Section.

In the example shown in FIG. 1, a GPS signal antenna 11 and a GPS signal receiving unit 12 for selectively receiving a GPS signal from an artificial satellite in the GPS and performing predetermined processing on the received GPS signal. From the current position detection unit 13
Supplied to The current position detector 13 includes, in addition to the GPS signal SG from the GPS signal receiver 12, a detection output SD from a direction sensor 14 for detecting the traveling direction of the vehicle, and a traveling speed of the vehicle, that is, a vehicle speed for detecting the vehicle speed. A detection output SS from the sensor 15 and reference position data DZ from a reference position data input unit 16 for inputting data on a reference position of the vehicle are supplied.

The map data memory unit 20 in which map data relating to the road map network within the moving range of the vehicle is stored, receives a memory control signal CR from a control unit 21.
M, the map data DM read out according to M is stored as appropriate according to the memory control signal CMP from the current position detection unit 13, and the stored map data DM is read out according to the memory control signal CMP. Is also supplied to the current position detecting unit 13. Then, the current position detecting unit 13
Are the GPS signal SG from the GPS signal receiving unit 12, the detection output SD from the direction sensor 14, the detection output SS from the vehicle speed sensor 15, the reference position data DZ from the reference position data input unit 16, and the current position detection. Based on the map data DMP read from the memory unit 22, the current position of the vehicle is detected as a position on a road map represented by the map data DMP, and the current position data DP representing the detected current position is transmitted.

The GPS signal antenna 11, the GPS signal receiving unit 12, the current position detecting unit 13, the direction sensor 14, the vehicle speed sensor 15, the reference position data input unit 16, and the current position detecting memory unit 22 are composed of a whole. A position detection unit is formed.

The current position data DP sent from the current position detector 13 is supplied to a trajectory data generator 23.
The trajectory data forming unit 23 includes, in the control unit 21, road data DRD representing a road within the moving range of the vehicle, which is included in the map data DM read from the map data memory unit 20 according to the memory control signal CRM from the control unit 21. Control signal QW supplied from memory control unit 24 in response to write command signal CW1 transmitted from
1, and the stored road data DRD is appropriately read in accordance with a read control signal QR1 supplied from the memory control unit 24 in response to a read command signal CR1 sent from the control unit 21. Road data DRD obtained from 25 is also supplied.

In the trajectory data forming unit 23, the current position of the sequentially moving vehicle represented by each of the current position data DP sequentially obtained from the current position detecting unit 13 is stored in the road data DRD obtained from the road data memory unit 25. Is determined as a position at which the vehicle sequentially moves on the road represented by, and the trajectory of the vehicle is determined, and trajectory data DT representing the determined trajectory of the vehicle is formed. The trajectory data DT obtained from the trajectory data forming unit 23 is supplied to the display data forming unit 26.

The display data forming unit 26 is also supplied with map data DM read out from the map data memory unit 20 in accordance with a memory control signal CRM from the control unit 21. Further, the display data forming unit 26 includes landmark data representing various buildings, facilities, gas stations, and the like included in the map data DM from the map data memory unit 20 in the road map network represented by the map data DM. DL is stored according to write control signal QW2 supplied from memory control unit 27 in response to write command signal CW2 transmitted from control unit 21, and
The stored landmark data DL is stored in the control unit 2
The landmark data DL obtained from the landmark data memory unit 28, which is appropriately read in accordance with the read control signal QR2 supplied from the memory control unit 27 in response to the read command signal CR2 sent from No. 1, is supplied.
The warning data DC obtained from the warning data forming unit 32 is supplied.

The warning data D from the warning data forming unit 32
C is obtained as follows.

The control unit 21 includes a detection output SD from the direction sensor 14, current position data DP sequentially obtained from the current position detector 13, and a road data memory 25.
Is supplied. In the control unit 21, based on the detection output SD, the current position data DP, and the road data DRD, a predetermined distance from the current position of the vehicle on the road on which the vehicle is traveling,
For example, the position of a portion 100 m ahead is obtained. Then, the memory readout control corresponding to the position of the road portion ahead of the vehicle and corresponding to the type of the situation information data selected according to the command data DX supplied from the operation input unit 31 to the control unit 21. A signal CRS is formed, and the memory read control signal CRS is transmitted to the status information data memory unit 3.
Supply 0.

The status information data memory unit 30 stores status information data representing the status of each of a plurality of road portions selected in advance for each road within the moving range of the vehicle in accordance with each road portion. It is stored with the address. In other words, the situation information data representing the situation of the road portion is read out from the situation information data memory unit 30 by specifying the address corresponding to the road portion corresponding to the memory read control signal CRS.

The situation information data stored in the situation information data memory unit 30 includes, for example, road surface conditions under various weather conditions of each road portion, for example, “clear”, “cloudy”,
Road conditions under each of "fog", "rain", "snow", etc., expressed as either "normal" or "attention" based on the analysis of actual data collected in advance. Data, traffic conditions in each time zone of each road part in one day, for example, eight time zones of three hours each obtained by dividing 24 hours of the day into eight: 6:00 to 9:00, 9:00 to 12
Hour, 12:00 to 15:00, 15:00 to 18:00, 18:00 to 21
Hour, 21:00 to 24:00, 24:00 to 3 o'clock, and 3 o'clock to 6 o'clock respectively, are expressed by either "normal" or "attention" based on the analysis result of the actual data collected in advance. Time zone data, road surface conditions and traffic conditions of each road section in each season, for example, "spring", "summer",
"Autumn" and the road surface conditions 及 beauty traffic conditions in each of the "winter", from a previously collected of the situation data analysis result, "normal", "traveling attention", one of the "running unsuitable" and "impassable" And the like according to the season.

The weather-specific data indicates, for example, a weather condition such as “clear”, “cloudy”, “fog”, “rain”, or “snow” by the lower three bits, and “normal” by the upper one bit. "Or" running caution "is 4-bit data. Also,
The time zone data is, for example, eight time zones according to the lower 3 bits: 6:00 to 9:00, 9:00 to 12:00, 12:00 to 15
Hour, 15: 00-18: 00, 18: 00-21: 00, 21: 00-24,
The time zone is any one of 24:00 to 3 o'clock and 3 to 6 o'clock, and is a 4-bit data that indicates a traffic condition of "normal" or "running attention" by the upper one bit. Further, the seasonal data indicates, for example, the seasons to be any of “spring”, “summer”, “autumn” and “winter” by the lower 2 bits, and “normal”, “attention”, It represents the road surface condition 及 beauty traffic conditions that are either "running unsuitable" and "impassable", is a 4-bit configuration of the data.

In the status information data memory unit 30, the memory read control signal C from the control unit 21 is output.
When the RS is supplied, status information data on a road portion corresponding to the memory read control signal CRS, for example, weather-specific data, time-zone-specific data, or season-specific data is read as status information data DSI. At this time, the memory read control signal CRS from the control unit 21 determines whether the status information data DSI read from the status information data memory unit 30 is weather-specific data, time-zone-specific data, or season-specific data. It is determined according to the type of the status information data.

Even if the memory read control signal CRS from the control unit 21 is supplied to the situation information data memory section 30, the situation information data memory section 30 stores the address corresponding to the road section corresponding to the memory read control signal CRS. When there is no, the status information data DSI from the status information data memory unit 30 is not read.

When the status information data DSI is read from the status information data memory unit 30, for example, if the status information data DSI is weather-specific data, the "clear weather" for the road portion corresponding to the memory read control signal CRS is used. "," Cloudy "," mist "," rain "," snow ", etc.
Is read as When the status information data DSI is data for each time zone, the memory read control signal C
Eight time zones for the road section corresponding to the RS: 6:00 to 9:00, 9:00 to 12:00, 12:00 to 15:00, 15:00 to 18
All of the hourly data for hour, 18:00 to 21:00, 21:00 to 24:00, 24:00 to 3:00, and 3:00 to 6:00 are read out as status information data DSI. Further, when the situation information data DSI is seasonal data, seasonal data on each of "spring", "summer", "autumn", and "winter" for a road portion corresponding to the memory read control signal CRS. Are read out as status information data DSI. The status information data DSI read from the status information data memory unit 30 is supplied to the control unit 21.

The control unit 21 is supplied with the detected weather data DWE from the weather data generator 33 as appropriate. The weather data generation unit 33 detects the weather condition around the vehicle, and detects the detected weather condition as, for example, “sunny”, “cloudy”, “mist”, “rain”, “snow”, and the like. The data DWE is formed and supplied to the control unit 21. The detected weather data DWE supplied to the control unit 21 is taken into the control unit 21 in accordance with command data DX supplied from the operation input unit 31 to the control unit 21.

The control unit 21 has a built-in calendar timer 21A.
Generates calendar data not only representing the time of day, but also the actual day, month, and year. Further, the control unit 21 has a built-in data comparison unit 21B. In the data comparison unit 21B, the situation information data DSI from the situation information data memory unit 30 and the detected weather data DWE from the weather data generation unit 33 are provided. Alternatively, the data is compared with the calendar data from the calendar timer 21A.

The status information data DS read from the status information data memory unit 30 and supplied to the control unit 21
When I is formed by, for example, weather-specific data, in the control unit 21, the data comparison unit 21B
Accordingly, a state in which the weather-specific data forming the situation information data DSI is compared with the detected weather data DWE from the weather data generating unit 33 is set according to the command data DX supplied from the operation input unit 31. Then, in the data comparing unit 21B, the weather condition represented by the detected weather data DWE, for example, one of “sunny”, “cloudy”, “fog”, “rain”, “snow”, etc., in the weather-specific data. The weather condition corresponding to the selected weather condition is selected, and the weather condition represented by the selected weather-specific data, that is, one of “sunny”, “cloudy”, “mist”, “rain”, “snow”, and the like, and The comparison output data DI corresponding to the road surface condition, that is, “normal” or “attention to traveling” is formed.

The status information data DS read from the status information data memory unit 30 and supplied to the control unit 21
For example, when I is formed by time zone data, the control unit 21 in the data comparison unit 2
1B, the state in which the time zone data forming the status information data DSI and the calendar data from the calendar timer 21A built in the control unit 21 are compared according to the command data DX supplied from the operation input unit 31. Taken away. Then, in the data comparing unit 21B, a data representing a time zone including the time represented by the calendar data is selected from the time-based data, and the traffic condition represented by the selected time-based data, that is, “normal” Alternatively, comparison output data DI corresponding to "running attention" is formed.

The status information data DS read from the status information data memory unit 30 and supplied to the control unit 21
For example, when I is formed by seasonal data, the control unit 21 controls the data comparison unit 21
B, the seasonal data forming the situation information data DSI and the calendar timer 21 built in the control unit 21
A state in which the data is compared with the calendar data from A is determined according to the command data DX supplied from the operation input unit 31. Then, in the data comparison unit 21B, of the seasonal data, a data representing the season including the date represented by the calendar data is selected, and the road surface condition and traffic condition represented by the selected seasonal data, that is, “ The comparison output data DI corresponding to any of "normal", "running caution", "improper running", and "impossible to pass" is formed.

The comparison output data DI formed in the data comparing section 21B in this manner is transmitted to the control unit 21.
To the warning data forming unit 32. Then, in the warning data forming unit 32, the weather condition and the road condition, the traffic condition or the road condition and the traffic condition corresponding to the comparison output data DI, that is, "clear", "cloudy", "fog",
One of "rain", "snow", etc.
Warning data DC indicating a warning such as “running caution”, “improper running”, or “impossible to pass” is formed, and obtained from the warning data forming unit 32.

The locus data D from the locus data forming unit 23
T, the map data DM from the map data memory unit 20, the landmark data DL from the landmark data memory unit 28, and the display data forming unit 26 to which the warning data DC from the warning data forming unit 32 are supplied. Track data DT, map data DM, landmark data D
L and the warning data DC are synthesized, and the road map network represented by the map data DM, the traveling locus of the vehicle represented by the locus data DT superimposed on the road map network, and various landmarks represented by the landmark data DL, and ,
Image display data DSP which comprehensively represents the warning represented by the warning data DC is formed. Then, the image display data DSP obtained from the display data forming unit 26 is supplied to the video signal forming unit 35.

The video signal forming section 35 forms a color video signal composed of a red primary color signal R, a green primary color signal G and a blue primary color signal B based on the image display data DSP. The image data is supplied from the unit 35 to the image display unit 36. Thereby, the image display unit 3
6, the image display based on the image display data DSP formed by the display data forming unit 26 is performed. For example, as shown in FIG. And the current position Pp is superimposed on the image PRD of the road map network on which the superimposition is performed.
Notice warning that the 00m destination traveling attention (rain) "is made.

The warning data DC obtained from the warning data forming section 32 is also supplied to the audio signal forming section 37. In the audio signal forming unit 37, an audio signal SC for issuing a warning represented by the alarm data DC as an alarm is formed based on the alarm data DC.
Is supplied to the alarm generator 38. As a result, the alarm generator 38 responds in advance to the warning indicated by the warning data DC.
An audible alert is issued.

As described above, in a vehicle traveling on a road, a warning notice regarding a road surface condition, a traffic condition, or both a road surface condition and a traffic condition at a selected road portion ahead along the traveling route is displayed in the vehicle. This is performed by the installed image display unit 36, and further, a warning sound alert for the road surface condition, the traffic condition, or both the road surface condition and the traffic condition at the selected road portion ahead along the running road is installed in the vehicle. When the warning is issued from the generated alarm generating unit 38, the driver of the vehicle reliably grasps in advance the road surface condition, the traffic condition, or the road surface condition and the traffic condition on the selected road portion ahead along the traveling road. be able to. Therefore, the driver of the vehicle can take an action such as, for example, bypassing the selected road portion or entering the selected road portion with an appropriate traveling state.

The weather data generator 33 in the above-described example detects the weather condition around the vehicle by detecting, for example, the temperature and humidity, and sends out detected weather data DWE indicating the detected weather condition. However, as such a weather data generating unit 33, for example, an FM providing weather condition information
(Frequency modulation) A device that receives a broadcast signal, forms detected weather data DWE indicating the weather condition around the vehicle obtained from the received FM broadcast signal, and transmits the generated weather data DWE may be used.

FIG. 3 shows another example of the road condition notifying device according to the present invention. All of the components constituting the example shown in FIG. 3 are also mounted on the vehicle. In particular, the image display unit among them is, for example, an instrument panel forming a front end portion of a vehicle compartment forming unit in the vehicle. Section.
The example shown in FIG. 3 has many parts similar to the example shown in FIG. 1, and the parts and signals corresponding to each part and each signal in the example shown in FIG. Are denoted by common reference numerals, and redundant description thereof will be omitted.

In the example shown in FIG. 3, a control unit 41 is provided, and this control unit 41 plays a role as a substitute for the control unit 21 in the example shown in FIG. The current position data DP obtained from the current position detection unit 13 is supplied to the control unit 41.

Further, in the example shown in FIG.
An antenna 51 used for receiving a traffic information signal under CS is provided. The transmission of traffic information signals under VICS is supported by an antenna support structure 62 above the road on which a vehicle 61 equipped with the example shown in FIG. 3 runs, as shown in FIG. 4, for example. This is performed through the transmitting antenna 63 arranged. A large number of such transmitting antennas 63 are arranged along a road at predetermined intervals. Then, the traffic information signal transmitted from each transmitting antenna 63 is received through the antenna 51 provided in the vehicle 61. V received through antenna 51
The contents of the traffic information signal under the ICS include warning information on the road surface condition, the traffic condition, both the road surface condition and the traffic condition, etc. of the selected road portion in the area where the transmitting antenna 63 is located. It is said.

The traffic information signal transmitted through the antenna 51 is received by the traffic information receiving section 52, and the received traffic information signal STR is obtained from the traffic information receiving section 52 and supplied to the decoder section 53. In the decoder section 53, demodulation processing and decoding processing are performed on the received traffic information signal STR, and traffic information data DTR based on the received traffic information signal STR is obtained from the decoder section 53. That is, the decoder unit 53 forms a data reproducing unit that reproduces the traffic information data DTR that is the situation information data from the traffic information signal STR received by the traffic information receiving unit 52 via the antenna 51.
The traffic information data DTR from the decoder unit 53 is supplied to an information data memory unit 54.

The traffic information signal STR obtained from the traffic information receiving section 52 is also supplied to the electric field strength detecting section 55. In the electric field strength detection unit 55, the antenna 5 based on the traffic information signal STR received by the traffic information reception unit 52 is used.
The detection of the electric field strength of the traffic information signal STR for 1 is performed, and when the detected electric field strength is equal to or more than a predetermined value, a detection output CWT is sent out and supplied to the memory control unit 56 as a control signal.

Traffic information signal STR for antenna 51
Becomes larger as the distance from the transmitting antenna 63 that sends out the traffic information signal STR to the vehicle equipped with the antenna 51 is shorter. Therefore, the fact that the electric field intensity detected by the electric field intensity detection unit 55 is equal to or more than the predetermined value indicates that the antenna 5
The traffic information signal STR from the transmitting antenna 63 arranged at a position less than or equal to a predetermined distance from the vehicle provided with 1, that is, the transmitting antenna 63 arranged at a position relatively close to the vehicle, is transmitted by the traffic information receiving unit 52. Means that it has been received.

The memory control unit 56 includes the control unit 41
In response to the current position data DP, a memory control signal CRT, which is transmitted as corresponding to the selected road part of the road on which the vehicle travels, is also supplied. In the memory control unit 56, when the detection output CWT from the electric field strength detection unit 55 is supplied, a write control signal QWT is supplied to the information data memory unit 54 according to the detection output CWT, and the control unit 41 from the memory control signal CR
In response to the read control signal QRT, the information data memory unit 5
4 is supplied.

In the information data memory section 54, when the write control signal QWT is supplied from the memory control section 56, the traffic information data DTR from the decoder section 53 is stored in accordance therewith, and the stored traffic information data DTR is stored. Information data DTR is read from memory control unit 56 by read control signal QR.
The traffic information data DTR is read out according to T and supplied to the control unit 41. In the control unit 41 to which the traffic information data DTR is supplied, the built-in warning data detection unit 41A uses the road condition, the traffic condition, and the road condition for the selected road portion included in the traffic information data DTR. Detection is performed on warning data representing warning information on both the traffic condition and the like.

When the warning data detecting section 41A detects warning data included in the traffic information data DTR from the information data memory section 54, it is taken out as warning data DC. The warning data DC extracted by the warning data detecting unit 41A is transmitted to the control unit 41.
To the display data forming unit 26.

The locus data D from the locus data forming unit 23
T, map data DM from the map data memory unit 20, landmark data DL from the landmark data memory unit 28, and warning data DC from the control unit 41.
Is supplied to the display data forming unit 26, the trajectory data DT, the map data DM, the landmark data DL, and the warning data DC are synthesized and superimposed on the road map network represented by the map data DM and the road map network. The travel locus of the vehicle represented by the locus data DT and various landmarks represented by the landmark data DL, and image display data DSP comprehensively representing warning information represented by the warning data DC are formed. Then, the image display data DSP obtained from the display data forming unit 26 is supplied to the video signal forming unit 35.

The video signal forming section 35 forms a color video signal composed of a red primary color signal R, a green primary color signal G and a blue primary color signal B based on the image display data DSP. The image data is supplied from the unit 35 to the image display unit 36. Thereby, the image display unit 3
6, the image display based on the image display data DSP formed by the display data forming unit 26 is performed. For example, as shown in FIG. The warning data D is superimposed on the road map network image PRD on which the current position Pp is superimposed.
In response to the warning information represented by C, for example, "Accident Frequent Area Caution! Notice warning display is made of. "

The warning data DC obtained from the control unit 41 is also supplied to the audio signal forming unit 37. In the audio signal forming unit 37, an audio signal SC for issuing alarm information represented by the alarm data DC as an alarm is formed based on the alarm data DC.
Is supplied to the alarm generator 38. Thereby, the alarm generating unit 38, preview audio alarm in response to the warning information warning data DC is expressed is emitted.

In the example shown in FIG.
The same operation and effect as in the case of the example shown in FIG. 1 can be obtained.

[0054]

As is clear from the above description, the present invention
In the road condition notification device according to the first mode or the second mode in the present invention, the specific status information data represents
Multiple pre-selected areas on the road on which the vehicle travels
For example, an advance warning about the situation of a specific area part where the vehicle is heading is provided, for example, an advance warning image is displayed by an image display unit provided on the vehicle, or a preliminary audio warning is provided by an audio output unit provided on the vehicle. since performed with, before reaching the particular region part where the vehicle is it towards, elected status information data about a specific area portion thereof, notice warning about the status indicated by the situation information data, in the vehicle notice made as warning image display or preview audio warnings in the driver of the vehicle, the pre
The state where the notice / warning image display or the notice sound warning can be reliably recognized is taken. Therefore, vehicles of the driver, the vehicle is run
Multiple pre-selected areas on the road
Chino before reaching the particular region portion the vehicle is headed, the advance notice warning about a particular region portion thereof, securely grasped as notice warning image display or preview audio warning in the vehicle, reflected in the operation of the vehicle Can be done.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of a road condition notification device according to the present invention.

FIG. 2 is a conceptual diagram for explaining an example of a warning display obtained in the example shown in FIG. 1;

FIG. 3 is a block diagram showing another example of the road condition notifying device according to the present invention.

FIG. 4 is a conceptual diagram provided for describing a reception status of a traffic information signal under VICS according to the example shown in FIG. 3;

FIG. 5 is a conceptual diagram for explaining an example of a warning display obtained in the example shown in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 GPS signal antenna 12 GPS signal receiving part 13 Current position detecting part 14 Direction sensor 15 Vehicle speed sensor 16 Reference position data input part 20 Map data memory part 21, 41 Control unit 22 Current position detecting memory part 23 Track data forming part 24 , 27, 56 Memory control unit 25 Road data memory unit 26 Display data forming unit 28 Landmark data memory unit 30 Situation information data memory unit 31 Operation input unit 32 Warning data forming unit 33 Weather data generating unit 35 Video signal forming unit 36 Image Display unit 37 Audio signal forming unit 38 Alarm generating unit 51 Antenna 52 Traffic information receiving unit 53 Decoder unit 54 Information data memory unit 55 Electric field strength detecting unit 61 Vehicle 62 Antenna support structure 63 Transmitting antenna

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G08G 1/137 G01C 21/00 G08G 1/00 G08G 1/0969 G08G 1/16

Claims (6)

(57) [Claims] 1. A vehicle mounted on a vehicle to detect a current position of the vehicle.
And the detected current position corresponds to the travel range of the vehicle.
Sends out current position data that represents the position on the road map
A position detector that performs at least the road on which the vehicle travels on the road map.
A map data supply unit for transmitting the map data represented by the map data; a road image represented by the map data;
And the image showing the current position of the vehicle represented by the data
An image display unit,A driving environment detection unit that detects a driving environment of the vehicle; Road on which the vehicle runsMultiple pre-selected in
For each of the local areas, depending on the driving environment of the vehicleCondition
Situation information data showing the situationMemory means in which is stored
And theMemory meansFrom aboveMultiple pre-selected regional parts
The specific area where the above vehicle is headingAbout the part
ShapeStatus information data,A letterStatus information dataFrom
Corresponding to the driving environment detected by the driving environment detecting unit.
Specific status information data, and select the specific status information data.
Status information dataAbout the situationNoticeWarning is given
A road condition notification device comprising: 2. A position detecting unit mounted on a vehicle for detecting a current position of the vehicle, and transmitting current position data representing the detected current position as a position on a road map corresponding to a travel range of the vehicle. A map data supply unit that sends out map data representing at least the road on which the vehicle travels on the road map; and an image of the road represented by the map data and an image indicating the current position of the vehicle represented by the current position data. an image display unit for displaying the traffic information reception unit for receiving traffic information signal containing status information data indicating the status of the each of the plurality of preselected areas part of a road where the vehicle runs, the traffic The traffic information signal received by the information
And data reproducing section you play the status information data, the status information data obtained from said data reproducing portion, the
The vehicle of a plurality of pre-selected area parts is heading
Control means for selecting a specific situation information data for a specific area portion of the road, and a control means for setting a state where an advance warning is given regarding a situation represented by the selected specific situation information data. Notification device. 3. The image processing device according to claim 1, wherein the control means displays a specific situation information on the image display unit.
Display a warning image about the situation that
The road condition notification device according to claim 1 or 2, wherein the road condition is notified. 4. The road condition notifying device according to claim 3 , wherein the control means causes the image display unit to display a notice warning character indicating a condition represented by the specific condition information data. 5. An apparatus according to claim 1, further comprising an audio output unit provided in the vehicle.
Means for outputting specific status information data to the audio output unit.
Road condition notifying device according to claim 1, 2 or 3 further characterized in that to perform preview audio warnings about Rawasu situation. 6. A running environment detecting section detects a running environment of a vehicle.
To detect at least one of weather, time of day, and season
Road condition notifying device according to claim 1 Symbol mounting, characterized in that.