FI86221C - Speed indicator for rail vehicles - Google Patents

Description

1 86221

Speed indication device for rail vehicles

The invention relates to a speed indicator device for rail vehicles, comprising a fixed circular scale 5 comprising a movable indicator and a plurality of visually identifiable indicating elements arranged in place, electrically controlled and arranged in connection with the scale.

Pointing devices with pointers are available in mark-10 cinemas for a wide variety of purposes and in very different embodiments. Pointing devices comprising more than one pointer for simultaneously detecting more than one measured value are also known. If each of these indicators is operated by its own drive-15 device, the costs of these drive devices become considerable and retrofitting in many cases impossible. In this case, an additional pointing device must be used instead, which is often impossible due to lack of space. A further 20 suffer from the clarity of expression.

The object of the invention is to make a well-proven pointing device of said quality such that. . that it may subsequently be fitted with one or; with several additional pointers.

25 The solution of the problem is that the indicating elements of the speed indicating device form at least one arcuate indicating group consisting of individually controllable light elements, which indicating group is arranged concentrically with a rotary scale and which produces more than 30 detection values, whereby the indicator indicates the driven speed and the set speeds given to the vehicle. Preferred embodiments of the speed indicating device according to the invention are set out in the appended claims 2-5.

The invention is explained in more detail below in connection with the drawing by way of example.

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The figure shows a pointing device 11 comprising a rotary scale 12. Such a known pointing device is used in particular for detecting the speed of rail vehicles, for example locomotives, and is mounted in the cab of the vehicle. The number 13 indicates an indicator that indicates the current speed (actual speed). The pointer is mounted on the shaft 14 and is positioned therethrough. The device still has a total distance transmitter 15 and a time clock 16.

Concentrated with the shaft 14 and the rotary scale 12 - with partial touching this - are arranged two indicating groups 17 and 18, which consist of a plurality of light elements 20 and resp. 21. These light elements are preferably semiconductor light emitting diodes which are individually controllable and can be individually illuminated.

The light elements of each pointing group preferably burn in the same color, but in both pointing groups 17 and resp. 18 different colors.

Each light element 20 and resp. 21 corresponds to the value of the road scale 12, in which case the distribution of the light elements along the scale can be even or uneven. If one of the light elements lights up, then the corresponding indication value is. . readable on a scale. Scale of two adjacent values; .1 the mean value between these values shall be indicated by double control of the light elements corresponding to these scale values. Thus, a finer division of the assignment is obtained in a simple manner.

Both indicating groups 17 and 18 are used in connection with said indicating device for rail vehicles from the outside, e.g. by radio, to indicate the set speeds given to the rail vehicle, while the indicator, as usual, indicates the actual running speed. In this way, it is possible to demonstrate to the driver of the vehicle how he should influence the speed of the vehicle.

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The light elements 20 and resp. In order to make the combustion 21 perfectly visible even in unfavorable lighting conditions, the indicating groups 17 and 18 are preferably covered with an anti-glare filter, for example a polaroin filter.

The light elements 20 and 21 can be controlled individually or together with their neighbor by an electronic, logical control unit 25, which receives its information via one or more lines 26.

The indicating groups 17 and 18 and the control unit 25 are preferably constructed on a printed conductor plate. This conductor plate is made primarily for retrofitting existing pointing devices 11 to which a mechanically movable second pointer 15 cannot be arranged, but nevertheless an additional indication is desirable. 1 · • · ·

Claims (5)

Speed rail indicator (11) for a rail vehicle, comprising a fixed circular scale (12) belonging to a movable pointer (13) and a plurality of stationary, electrically controlled and indicating elements arranged in connection with the scale, which can be sensed visually, characterized by , that the indicating elements comprise at least one beak-shaped indicating group (17, 18) consisting of separately controllable light elements (20, 21), which indicating group is arranged co-axially with the circular scale (12) and generating additional indication values, wherein the pointer ( 13) indicates the actual speed driven, and the indicating group (17, 18) shows the vehicle input velocities. 2. An indicator according to claim 1, characterized in that the light elements (20, 21) consist of semiconductor LEDs. 3. An indicator according to claim 1, characterized in that 20. each separately controllable light element (20, 21) is coordinated with a specific value on the scale (12), and that each combination of two adjacent, simultaneously controlled light elements is coordinated with an intermediate value between the scale values individually coordinated with the light elements (20, 21). 4. An indicator according to claim 1, characterized in that the scale (12) is coordinated with two indicating groups (17, 18), which consist of different light illuminating elements (20, 21). 5. An indicator according to claim 1, characterized in that the indicating groups (17, 18) are covered by an anti-glare filter.