SU852692A1 - Device for reading information off vehicles - Google Patents

Description

one

This invention relates to vehicle automation and can be used to read information from wagons, locomotives, and other vehicles.

Equipment for reading information from vehicles is known, comprising a code plate mounted on the vehicle consisting of a two-row set of retroreflective elements and a floor block with directional radiation sources, photosensitive sensors connected to a decoder.

A disadvantage of the known device is the complexity of the decoding scheme and the unreliability of operation.

The purpose of the invention is to simplify the device.

The goal is achieved by the fact that the photosensitive elements are made in the form of a two-plane corner reflector, and the distance between the axes of the photosensitive sensors and radiation sources corresponds to the width of the retroreflective elements, and the depressor consists of an adder and threshold elements whose outputs are connected to the adder, and inputs to photosensitive sensors.

FIG. 1 shows a code plate.

front view; in fig. 2 - code plate and floor block, top view; in fig. 3- floor block; in fig. 4 is a block diagram of the device; in fig. 5 - temporary diag ram of the device operation.

The device contains the code plate 1 installed on the vehicle and consists of the lower and upper rows of retroreflective elements 2, which

10 carry information about the binary units of the vehicle number, and the light-absorbing plates 3 carrying information about binary zeroes. The device also contains a floor

15, a block 4 having holes in the casing 5, through which parallel light beams of light sources are directed towards the code plate 1, and vertical slots 6, through which the returned

20 from the code plate 1, the rays fall on the photosensitive sensors 7 connected to the threshold elements 8 connected to the binary adder 9. The device operates as follows.

25 som. When a vehicle with a code plate 1 fixed on it relative to the floor unit 4, the code plate 1 is illuminated by two parallel beams of light from the holes 5.

30 Retroreflective elements 2 code

the plates 1 direct the rays towards the floor unit 4. The distance / between the beam falling on the retroreflective element 2 and the beam going from it as the code plate 1 moves relative to the block 4 varies from a value equal to the width d of the retroreflective element 2 to zero . At that moment when this distance becomes 5, i.e. the distance between the radiation sources in the openings 5 and the photosensitive sensors 7 in slits 6, the returned beam acts on the photoelectric sensor 7 to form an optical strobe pulse.

When the incident rays fall on the position of code plate 1, where retroreflective elements 2 are located in the upper and lower rows, optical strobe pulses appear in both slits 6 of the floor-standing unit 4. If the absorber plate 3 is in the upper row, then An optical strobe pulse will occur only in the lower slot 6. Thus, when the code plate moves relative to block 4 in slits 6, a sequence of optical strobe pulses is formed, corresponding to the information (binary number) encoded on code plate 1. pticheskie strobe pulses act on the photosensitive sensors 7 and 8 at the threshold elements which convert optical strobe pulses into electrical. The timing diagrams of optical strobe pulses and electrical pulses coincide. From the outputs of the threshold elements, electrical pulses are fed to the input of the binary adder 9, which performs decoding of the pulses. Having received the position of code plate 1 in the upper row for the value of a binary zero, is closed by absorbing plates 3, and for the value of a binary unit, the position of the top row with retroreflective elements 2, we obtain the binary number coded on the code plate 010010111001100. When the code plate 1 passes through the block 4 from the outputs of the binary adder 9 receives a sequence of pulses (active zeros and ones) corresponding to the coded number.

Man placement of retroreflective. elements 2 and absorbing plates 3 in the upper row of code plate 1, it is possible to encode in binary code any number denoting the vehicle number.

The implementation of retroreflective elements of the code plate, carrying one bit of information in the form of, for example, two-plane corner reflectors, etc., which form optical strobe pulses in the receiving slits of the outdoor device, makes it possible to significantly unscramble the information decryption and processing circuit.

.

Claims (1)

Invention Formula A device for reading information from vehicles, containing a code plate mounted on the vehicle, consisting of a two-way set of retroreflective elements, and an outdoor unit with directional sources, photosensitive sensors connected to the decoder, characterized in that, in order to simplify the device, retroreflective the elements are made in the form of a two-plane corner reflector, while the distance between the axes of the photosensitive sensors and directional radiation sources correspond to the width of the retroreflective elements, and the decoder consists of an adder and threshold elements, the outputs of which are connected to the adder, and the inputs to photosensitive sensors. Sources of information taken into account in the examination 1. I. Gluzman. Automatic charging off of railcars on the railways of England. “Automation, Remote Control and Communication, 1963, No. 6, p. 46-47.