SU656092A1 - Displacement-to-code converter - Google Patents

Description

one

The invention relates to the field of automation and computer technology and can be used to connect an extension source of information with a digital computing device.

Known transducers movements in the code. Some of the known transducers contain a coded multiple scale, rigidly associated with the object being measured, radiation sources, Optically: associated through the openings of the coded scale with photo receivers, the outputs of which are connected to the coarse and fine sampler 1.

The disadvantage of such transducers is the difficulty in constructing a qdb scale.

Other known transducers to code contain a code scale digitized in a combinatorial code rigidly fixed on the object to be measured, radiation sources optically coupled through the holes of the code scale to the photoreceivers, the outputs of which are connected to the sample matching unit 2 through the driver unit.

A disadvantage of such transducers is the difficulty in constructing a sample matching unit.

The closest technical solution to the proposed invention is a displacement transducer into a code containing a code scale fixed on the displacement object optically connected with fixed photo-receivers of coarse 1-time readings, the outputs of which are connected to information / inputs of coarse and accurate readings , and the output of the exact former

s ta connected according to the input of the coarse-count driver, 3.

The disadvantage of such a converter is its complexity.

The purpose of the invention is to simplify the transformer.

-Shipped; The goal is achieved by the fact that a pulse generator and a shift register are entered into the converter, and the photodetectors are made as

Claims (3)

5 semiconductor elements with charge coupling, the outputs of the pulse generator are connected to clock inputs of the MIS structures of semiconductor elements with charge coupling and formers of coarse and exact samples. and the output of the coarse reference generator is connected to the input of the shift register. The block diagram of the converter is shown in Fig. 1; in Fig.2, the code scale of the transducer and the image of the strokes of rough and accurate readings. The converter contains a coded scale 2 fixed on object 1, optically connected with an accurate photoreceiver 3 and a coarse counting photoreceiver 4, a photodetector 3 output is connected to the information input of the exact counting generator 5 . The output of the former 5 is connected to the matching input of the former 6, the output of which is connected to the input of the shift register 7. The photodetectors 3 and 4 are made in the form of semiconductor elements with charge coupling. The outputs of the generator 8 pulses are connected to the clock inputs of the MDP structures of the semiconductor elements 3 and 4 and the formers 5 and 6 of accurate and coarse readings. On each scale, short strokes 9 and long strokes 10 are applied, the optical image of which transfers from to semiconductor elements 3 and 4, each of which consists of a line of photosensitive MOS structures 11 isolated from each other. Long strokes of 10 code scale 2 applied in accordance with the combinatorial code 2. Between the images of adjacent short strokes 9 on the semiconductor element 3 is located (C photosensitive structures t-1. Between the images of neighboring characters (one corresponds to a long bar 10, and at zero a long bar in the appropriate place is absent) on the semiconductor element 4 is N / tti photosensitive structures 11. The number of symbols, which must be depicted on the semiconductor element 4, is determined by the number of coarse bits. Semiconductor element 3 must contain at least N light 11. The converter operates as follows: When the start command starts, the tin 3,4, and 7 are reset, the generator 8 generates a sequence of clock pulses that arrive at the clock inputs of elements 3 and 4, control the accumulation processes, the serial transmission charging signals and converting them into electrical signals. When you move the code scale 2 with the object 1 relative to elements 3 and 4, the bar image will also move. At the time of polling, the image of the strokes are projected onto elements 3 and 4. The corresponding structures 11 of elements 3 and 4 are excited and memorize the received image. After that, the information is first read from element 3. To do this, the clock inputs of element 3 from generator 8 receive a sequence of pulses that push the received image of strokes 9 to the edge of element 3. At the same time, clock pulses arrive at the input of shaper 5, where their number is counted from the start of reading. before arrival at the information input of the imaging unit 5 of the pulse from the output of the element 3, corresponding to the image of the front. the edges of the stroke 9. Thus, an exact count code N is formed at the output of the shaper 5 connected (to the matching input of the shaper b, the o / OK codes are generated. After this, the coarse count code is formed. For this, the clock inputs pulses that push the received image information of strokes 10 to the edge of element 4. At the same time, the clock pulses go to block 6. The processing of clock pulses in the driver e starts after passing NJQ / t pulse a, the number of which is determined by the code at the output of the imaging unit 5 connected to the matching input of the imaging unit 6. At the same time, the imaging unit 6 generates a sequence of pulses, the follow-up period of which is more than the period of the clock pulses received at its input. the image of the first symbol of the combinatorial code is displaced from the edge of the element 4 of the photosensitive structures 11. Therefore, at the information input of the Former 6, pulses corresponding to the images of the symbols will come in the middle no time intervals of the pulse sequence generated by the shaper 6 of the clock pulses. This eliminates read ambiguity, i.e. provides a coarse and accurate read out. From the former 6, the coarse reference combinatorial code is rewritten into shift register 7. As a result, a coarse reference code is formed in register 7, and an exact reference code is formed in the forms of the “5” sensor. According to its implementation, the proposed device is simpler known. The economic effect of using such a converter is determined by its technical advantage. The invention translates the transducer into a code containing a coded scale fixed to the displacement object and optically associated with fixed coarse and precise photodetectors whose outputs are connected to information inputs of coarse and fine samples, and the output of the exact sample generator is connected to the matching input a coarse driver, which is so that, in order to simplify the converter, the Pulse generator and the shift register are entered into it, - and the photodetectors are made in the form semiconductor elements with charge coupling, the output of the pulse generator is connected to clock inputs of the MIS structures of the half-conductor elements with charge coupling and shapers of coarse and precise readings, and the output of the coarser shaper is connected to the input of a shift register pattern Sources of information taken into account during examination 1. Meskin I.V. Photoelectric converters of angular size in a digital code. Sudpromgiz, 1962, p. 8-16. 2. Sharin Yu.S. and others. Combinatorial scales in automation systems. M., -energy, 1973, pp.85-91, rice 38,39. 3. The patent of Switzerland No. 389747, cl. 21C 46/33, 1972. i / 2 / JVi NTB 2t t Rig.2