SU1699011A2 - Television detector of moving objects - Google Patents

Abstract

The invention relates to television technology and can be used in television devices for the use of objects of motion. The aim of the invention is to increase interference immunity. The television device contains a shaper 1 lowercase and personnel pulses, a pulse generator 2, a second counter 3, a memory block 4, a shift register 5, a first counter 6, a television camera 7, D-griggers 8-11, a threshold barrel 12, a second element OR 13 , second 14 n first 5 elements AND, totem 16 and first 17 elements OR, shaper 18 yuda. The image (it allows to exclude lochnich of operation because of jitter of motionless objects. 1 Il.

Description

1

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The invention relates to television technology and can be used in television devices for detecting moving objects.

The purpose of the invention is the fisheries susceptibility.

Fig, 1 presents an external circuit diagram of the device; in fig. 2 illustrates the operation of the device;

The device contains (1) lowercase and lowercase cn.new pulse, the input of which is connected by the output of the generator 2 pulses, the counting inputs of arooci e counter 3, the strobe input of the memory unit and the strobe output of the shift generator 1 is connected to counting the input of the first counter 6, the input of the entry of the second counter 3 and the input of the television camera 7. The output of personnel mmpool / s of the former 1 is connected to the input of the recording of the first counter b, the input of the television camera 7 and the gate inputs four Ex D-flip-flops 8 to 11. The old outgoing outputs of the rows of the first and second counters 3 and 6 are connected to the address inputs of the memory block 4. The output of the television camera 7 is connected to the input of the threshold block 12, the output of which is connected to the input of the shift register 5, the first input of an expensive element OR 13 and the input of the second element AND 14; The output of the shift register 5 is the connection by the second input of the second element OR 13, the output of which is connected to the first input of the first element AND 15, the second input of which is connected to the output of the third element OR 16, and exit - with the first entrance of the first element nta OR 17, the second input of which is connected to the output of the second flip-flop 9 and the input of the third D-flip-flop 10, and the output is connected to the write control input of the memory unit 4, the multiverse output of which is connected to the second of the second element And 14. The information input of the first D-flip-flop 8 is connected to the common bus, and the output is the information input of the second D-flip-flop 9, the inverse output of which is connected to the input of the second element I 14 and the information input of the memory block 4. The output of the third D-flip-flop 10 is connected to the information input of the fourth D- Tpvtrrspa 11, the first entry of the three This element OR 16 and the first input of the code 18 generator, the inverse outputs of the third and fourth D-flip-flops 10 and 11 are connected to the inputs of the second terminal And 14, The output of the fourth D-trgger 11 is connected to the second input of the third element OR 16 and the second input of the fermiroate. 18 code, the outputs of which are connected to the information inputs of counters 8 g, P.

The device works as follows

From the counting inputs of counters 6 and 3, the sampling pulses and the lower-case clock pulses are received, and the preset position is received by the row and frame clock pulses. The outputs of the higher bits of the counters are connected to the address inputs of the memory block 4. In connection with this, the raster is divided into straight-line sections, each of which is staggered: according to cell 4, the boundaries of the sections are shifted from bottom to bottom and right through by feeding the corresponding codes to the information inputs of the counter. b and 3 with the imager 18 code

Before starting, D-flip-flops 8-11, Sr Zuyuyei shift register, are in the state O. After the pulse of the pulse to the input of the Start and arrival of the next frame BOio clock pulse, the second D-trigger 9 is set to state 1 and during this the frame is clearing the memory block 4. The next two frames of the device are in the recording mode (trigger 10 and 11 are connected in series). At the same time, the memory of cell 4 is recorded 1 if the bright object is either in the corresponding raster section or closer than a certain distance from the boundary of this segment. This distance is chosen based on the magnitude of the jitter objects (Fig. 2). If the bright object 19 falls on an area close to the border of the neighboring section 20 (hatched), then 1 is entered not only in the cell corresponding to the section

21, but also in the cell corresponding to the area

22. Such overlapping of sections is carried out in different ways vertically and horizontally. Vertically, partial overlapping of sections when entering is carried out in two frames by presetting the first counter 6 to the state K and 2f-K, respectively (where K is the number of lines of overlap; f is the number of bits of the counter b). When cleaning and waiting, the preset B is preset to the O state.

Horizontally, the partial overlap of sections when the mask is inserted is implemented by a circuit on the shift register 5 (by 2 N elements) and the OR 13 element while simultaneously presetting the second counter 3 to the 2-KG state (where M is the floor elements; j the number of bits of the counter 3).

The recording is done by pulses from noD-j. of the new block 12, passed through the re-G-1ST 5 shift to the element OR 13, the element AND 45 ifl element OR 17. In this case, in the modes

cleaning and inserting the operation of the element And 14 is prohibited by the potentials from the inverse outputs of the flip-flops 9-11.

After logging, all D-flip-flops 8-11 appear in the O state and the device enters standby mode. The pulses from the output of the threshold element are fed to the input of the And 14 element. However, these moments are interrogated in the cells, which are recorded 1 m s-lg from the inverse output of the memory block 4 prohibits the passage of pulses to the output of the A 14 element. The detection of bright objects does not lead to the occurrence of false positives (position 20, fig. 2, the cell corresponding to section 22, contains 1).

Then, if in the field of view there is a moving image, after some time, depending on the speed of movement of the object and the size of the raster dividing sections, the object moves from section 1 to section O, the output of the elements 14 appears to impulse that a moving object is in sight.

Thus, the television device provides the overlap of the raster plots boundaries when entering the masking signals, which leads to the elimination of false alarms due to jitter of stationary objects, therefore, the noise immunity of the device is increased.

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Claims (1)

A television device for detecting moving objects by author. St. Ns 1385331, characterized in that, in order to improve the noise immunity, a shift register, a second and a third OR elements, a fourth D-flip-flop and a code generator, are entered, the information input of the shift register is connected to. the output of the threshold block and the first input sTOpo-f. the OR element, the register register is connected. On the other side of the second ele-Zlta OR, the output of which is connected to the inputs of the first element I, the input of the strobing register is connected to the output of the generator of pulses, the input of the fourth C-flip-flop is connected to the first input of the code-to-generator, the input of the third zl $; -: ENT or by the output of the third D-Tpv-tera, the output of the fourth D-. rigger is connected to the second inputs of the third element OR of the chopper, the inverse output of the external D-trkgera and the connection of the third element OR are connected to the corresponding inputs of the first zl mo-pa I. the formers of the sneaker with unified with the inputs pre usTZNOaKI SCH8TCHIHO1, STrobiruYuSchMY LOG each of the O-triter is connected to the gates of the first races of the D-gateroi and forms it; with them a four-bit shift register. and - g and-- - - tt Schi 2 & hl