JPS5824794B2 - Driving route display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a driving route display device for displaying driving conditions such as a current position, a driving trajectory, and a traveling direction of an automobile or the like.

In general, when driving at night or in unfamiliar areas, a road map is installed in the driver's seat in advance to provide appropriate guidance so that the driver does not deviate from the planned course and get lost. A device has been developed that displays information such as the current location.

Conventionally, in this type of driving route display device, a distance detection unit detects the distance traveled by the vehicle according to the vehicle speed, and a rate type gyroscope or the like that detects the angular velocity of a change in one direction in the direction is detected. The detection unit detects the direction and the amount of change in the direction of travel of the car, calculates the current position of the car on the driving route from each detected value, and uses the point information that changes every moment on the road map to calculate the current position of the car. I am trying to display it.

However, in such conventional driving route display devices, detection errors due to gyroscope drift etc. accumulate when the car is driving, and the current position displayed on a map with a complex and dense road network cannot be displayed. There is a high possibility that the point information will deviate from the predetermined course and display the current position on a different road, and the driver is required to distinguish whether the driving course of the vehicle C is incorrect due to an error in the device. I can't do anything about it, and it has become very confusing.

The present invention has been made in consideration of the above points, and it not only displays the current position using point information as in the past, but also continuously displays the travel trajectory of the own vehicle within a certain section from the home position to the current position. Even if the current location on the road map deviates from the predetermined course due to the aforementioned detection error,
To provide a travel route display device which can easily determine which road the own army is currently traveling on by comparing the travel trajectory up to that point with the road shape on a map.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the basic circuit configuration of a driving route display device according to the present invention, which is composed of a photoelectric, electromagnetic, or mechanical contact type sensor that outputs a pulse signal proportional to the number of tire rotations. A distance detector 1 that generates a signal according to the direction of travel, and a rate type gyroscope that detects the angular velocity in one direction, for example, outputs a signal proportional to the direction or azimuth change depending on the direction of travel of the car. The travel distance of the vehicle is measured by counting the pulse signals from the direction detector 2 and the distance detector 1, and the traveling direction of the vehicle is determined from the output of the direction detector 2. A signal processing device (which calculates the two-dimensional coordinate position of the vehicle for each unit mileage based on the detection signal and centrally controls the entire device)
A driving trajectory memory that sequentially stores the constantly changing position data on two-dimensional coordinates obtained by the CPU) 3 and its signal processing device 3 and holds it as finite continuous position information corresponding to the current position of the car. A device (RAM) 4 and a CRT that displays the distance traveled by the vehicle, the travel trajectory in a certain section up to the current position, the current direction of travel, the required time, etc., updated every moment according to the output from the signal processing device 3.
Display commands are sent to the display device 5 consisting of a display device, a liquid crystal display device, etc., and the signal processing device 3 to change the direction of the travel trajectory displayed on the display device 5, move the display position, enlarge a portion of the travel trajectory, An operating device 6 capable of appropriately changing display format settings such as selecting a display scale
It is composed of.

The operation of the travel route display device according to the present invention configured as described above will be explained below.

First, when the vehicle is traveling, the operating device 6 is used to appropriately set a starting point on the display device 5 corresponding to a road map used for guidance and a display scale.

After that, when the car starts running, one pulse signal is sent from the distance detector 1 to the signal processing device 3 for each unit distance traveled, and the distance traveled is measured by counting the number of pulses there. , direction detector 2
The output is also sent to the signal processing device 3, where the direction of movement of the vehicle at every moment is determined.

The signal processing device 3 calculates the current position on the two-dimensional coordinates (x, y
) is calculated moment by moment, and the calculation results are sequentially sent to the display device 5 and also sent to the traveling trajectory storage device 4 to be stored and held.

Note that the stored contents are constantly read out and continuously sent to the display device 4.

At the same time, a direction signal at the current position is sequentially sent from the signal processing device 3 to the display device 5.

As shown in FIG. 2, the display device 5 displays a directional display mark M1 of the current position B and a starting point A.
The travel locus display mark M2 from to the current position B is made in a simulative manner, following the travel state of the vehicle.

In this case, a search mark M3 can be arbitrarily written on the travel locus display mark M2 displayed on the display device 5 according to an instruction from the operating device 6 so that a check can be made during the travel route.

In addition, as shown in FIG. 2, the display device 5 displays a display DI (this is a signal processing It is sufficient to incorporate a timer that operates only when driving in the device 3), and display D2 of the total distance traveled so far.
, or display D of the scale factor set by the operating device 6
Auxiliary indications such as 3 are made as appropriate.

Note that the display device 5 has a limit to the traveling trajectory displayed on it, so when the limit is exceeded, a new starting point A' is set using the operating device 6 to allow the vehicle to continue traveling. good.

In particular, at this time, there is a frame (
(not shown) can be displayed, and when the current position B reaches the frame, an alarm can be issued to notify the driver of this fact.

Specifically, the maximum values in the X-axis and Y-axis directions are set in advance in the signal processing device 3 in accordance with the frame indicating the display limit, and the calculated current position (x and y values are When the maximum value is reached, an alarm output may be given to a separately provided alarm device.

In addition, instead of displaying the traveling trajectory on the display device 5 all the time, the driver gives appropriate display commands to the signal processing device 3 through the operating device 6 as necessary, thereby reading out the contents of the traveling trajectory storage device 4. It is also possible to control the display so that it is displayed arbitrarily.

In this way, by comparing the travel trajectory up to the current location displayed on the display device 5 with the road shape on the map, the driver can easily determine which road the vehicle is traveling on. It becomes possible to

At this time, even if there is a cumulative error due to long-term distance relationships, the position on the planned course can be confirmed by comparing the road map with the last characteristic curve as a reference, for example, so that the current position can be confirmed from that part. Only the cumulative error up to the position is accounted for, and the position can be confirmed relatively accurately.

In addition, since the travel trajectory of a certain section that has passed is displayed and maintained, it is possible to simultaneously grasp the distance and direction of the own army's travel with respect to past passing points, and if necessary, the travel trajectory can be scaled down. Confirm the position of your own troops by changing the speed, moving the display position to match the map, rotating the display direction of the travel trajectory to match the direction of travel of your vehicle, or enlarging past passing points. This allows for efficient and detailed work.

3 to 5 show the above-described travel route display device according to the present invention, in which the signal processing device 3, travel trajectory storage device 4, display device 5, and operating device 6 are integrated in one storage case. This shows an example of the configuration of the unit, which includes a CRT 8 that is built into the case body 7 and arranged so that the display surface is on the front side, and a CRT 8 that is installed in the front of the case body 7 and is used for a dedicated sheet-shaped automobile. map (not shown)
A map holding plate 9 has a guide function that is held against the display surface of the RT8 and can be moved freely in any direction when moving the map, and a map holding plate 9 is provided on the front of the case body 7 other than the CRT display surface. A light table 10, a lamp house 11 provided in the case body T in accordance with its light table function, an operation switch panel 12 provided at the lower front of the case body 7, and a lamp house 11 provided on the upper surface of the case body 7. The light-shielding hood 13 (upper plate 1
31 and side plates 132 provided on both sides with an interval wider than the width of the case body 7), and a pocket portion for storing maps formed integrally with the upper plate 131 of the light-shielding hood 13. 14, and a tab 15 provided at the front of the top plate 131 to facilitate movement of the light shielding hood 13.

Although not particularly shown, a space 17 inside the case body 7
The control drive unit of the CRT 8 (which together with the CRT 8 constitutes the display device 5), the signal processing device 3, and the travel trajectory storage device 4 are incorporated.

Further, the operation switch panel 12 is provided with a top cover 121 which also has a function of displaying dedicated sheet-like map information, and inside the top cover 121 there are a main power switch SW1, a switch SW2 for the lamp house 11, and the above-mentioned operation device. Six various switch groups SW3 are provided.

Among the various switches of the operating device 6, there are switches for performing predetermined drawings such as adjusting the gyroscope of the direction detector 2, setting the timer and starting point on the display device 5, and setting the display scale. The operation switch panel 12 is equipped with a switch that allows you to shift, rotate, or enlarge (for example, a magnification of 2n) the display contents necessary to confirm the current position of your vehicle by comparing it with a map set on the CRT display screen while driving. It goes without saying that the adjustment switch, the switch for setting markings during the travel trajectory, etc. may be housed in a separate unitized case and placed near the driver for easy operation. do not have.

In the driving route display device according to the present invention configured as described above, a dedicated film-like map sheet prepared in advance is held on the display surface of the CRT 8 by the map holding plate 9, and the display scale is adjusted according to the scale of the map. If you start the car after setting the start point according to the planned driving course on the map using various switches on the operation switch panel 12, the driving trajectory corresponding to the map will be C.
It will be displayed on RT8.

Therefore, it is possible to accurately grasp the driving position of one's own army at all times with good operability while comparing it with the map.

At this time, even if the travel trajectory on the CRT display screen deviates from the planned course on the map due to cumulative errors in position during travel, the display position can be adjusted using the operation switch or the map held by the map holding plate 9 can be moved. By doing so, the deviation can be easily corrected.

In addition, by placing a light-shielding hood 13 in front of the display surface of the CRT 8, light from the outside from above and on both sides is effectively blocked (at this time, the movement of the map held by the map holding plate 9 is not obstructed in any way). ), it is possible to make the display contents of the CRT 8 easier to see.

Incidentally, when it is not necessary, the light shielding hood 13 is retracted above the case body 7 as shown in FIG.

This makes it possible to accommodate it without wasting any space.

In addition, by illuminating the light table 10 as needed, it is possible to easily check the map, etc., thereby providing versatility.

As described above, in the travel route display device according to the present invention, the signal processing device uses the output of the detector to detect the travel distance of the mobile object and the output of the detector to detect the direction of travel of the mobile object The position on the secondary coordinates for each unit traveling distance is determined, the determined position information that changes every moment is stored in a traveling trajectory storage device, and the traveling trajectory of the moving object is displayed on a display device according to the stored contents. display, and whose display form can be changed in setting using an operating device, wherein the display is displayed on the front surface of a storage case in which the signal processing device, the travel trajectory storage device, the display device, and the operating device are integrated. A display section of the device is arranged, and a map holding plate for holding a sheet-like map on the display section is attached to the case body side, and if necessary, it is fitted to a rail section provided on the top surface of the case body. A light-shielding hood is attached so that it can be slid forward and backward, and a lamp house is provided inside the case so that the front of the case can be used as a light table, allowing each of the above components to be compactly housed within the case. It also has the excellent advantage of being easy to operate and allowing the traveling position of a moving body to be accurately grasped by comparing it with a map.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the basic circuit configuration of a driving route display device according to the present invention, FIG. 2 is a diagram showing an example of the display form of the driving route display device, and FIG. 3 is a driving route display according to the present invention. FIG. 4 is a plan view showing one embodiment of the device, FIG. 4 is a front view thereof, FIG. 5 is a side sectional view thereof, and FIG. 6 is a side view showing a state in which a light shielding hood is retracted. 1...Distance detector, 2...Direction detector, 3...Signal processing device, 4...Travel trajectory storage device, 5... ...Display device, 6...
Operating device, 7... Case body, 8...
CRT, 9...Map holding plate, 10...
Light table, 11... Lamp house, 12
......Operation switch panel, 13...Shading hood, 14...Pocket section, 15...
...Tab, 16...Rail part.

Claims (1)

[Claims] 1. Based on the output of a detector that detects the distance traveled by a moving object and the output of a detector that detects the direction of travel of the moving object, a signal processing device calculates the distance traveled by the moving object per unit distance. A position on two-dimensional coordinates is determined, the determined position information that changes every moment is stored in a traveling trajectory storage device, and the traveling trajectory of the moving body is displayed on a display device according to the stored contents, and the display form is In the device in which settings can be changed using an operating device, a display section of the display device is arranged on the front side of a storage case in which the display device is incorporated. A travel route display device configured by attaching a map holding plate to the case body side for holding a sheet-like map on the display section. 2. The travel route display device according to item 1 above, characterized in that a light-shielding hood is attached so as to be able to fit into a rail portion provided on the upper part of the case body and slide in the front-back direction. 3. The driving route display device according to item 2 above, characterized in that a pocket portion for storing a map is provided on the top surface of the light-shielding hood. 4. The travel route display device according to any one of items 1 to 3 above, characterized in that a lamp is provided in the case so that the front surface ν of the case can be used as a light table.