SU991469A1 - Linear displacement to code converter - Google Patents

Description

The invention relates to systems for the automatic control and conversion of movements into a discrete electrical signal, namely, linear-to-code converters.

A known transducer of linear displacements into an electrical signal containing a primary winding wound on a non-magnetic pipe along the entire length of the measured range and additional windings, and the bark of ferromagnetic material 1 moves in the pipe.

The disadvantages of this device are: the technological difficulty of winding the primary winding, especially for large linear displacement transducers; the amount of information about the position of the monitored body is limited by the number of secondary windings of the sensor that can be placed on a given measurement range, since this number is equal to the number of discrete points at which the information signal is output.

The closest to the technical essence of the invention is a linear displacement transducer into a code containing a float — measles made of ferromagnetic material, transformer sensors with open magch conductors placed in a pipe of non-magnetic material, a relay, a memory unit, a decoder number sensor, secondary the sensor windings are connected in groups, and one of the terminals of the group is connected via a relay to the corresponding input of the memory unit, and the second terminals of the groups are combined

10 together, the secondary windings are connected in groups in series, and within each group they are connected in pairs 2.

However, this converter is also

15 has disadvantages, namely: with a large number of discrete checkpoints, the device must contain a large number of sensors, since their number must be equal to the number of discrete points; the presence in the display circuit of the memory block creates the possibility of information loss during de-energizing the device; the location of the sensors inside the pipe prevents access

25 to the sensor windings when adjusting and changing them during operation and repair.

Claims (1)

The purpose of the invention is to increase the accuracy of the converter by decreasing the step size. The goal is achieved by the fact that in a linear converter moving to a code containing ferromagnetic measles, transformer sensors with primary windings and with secondary windings of low and high bits, primary windings are connected in parallel and connected to AC voltage buses, secondary windings are connected as a result B groups, secondary windings in junior discharge groups are interconnected in pairs and counter, and the decoders of the junior and senior bits, the outputs of which are connected to the corresponding centers. the threshold indicators of the low and high bits and the bit synchronizer are introduced; the secondary windings in the high discharge bits of the transformer sensors are interconnected according to one another and connected to the inputs of the corresponding high threshold threshold elements, the secondary windings of the lower discharge bits of the DON connected to the inputs of the corresponding threshold elements of the lower order, the outputs of which are connected to the corresponding signal inputs of the low-level encoder, the first control the input of which is connected to the first output of the bit synchronizer and to the control input of the high-level decoder, the signal inputs of which are connected to the outputs of the high-level threshold elements and the second and third outputs of the bit synchronizer, respectively, the control input of which is connected to the second control junior descrambler input. FIG. 1 shows a converter circuit diagram; in fig. 2 is an example of the location of the core and transformer sensors. The linear displacement transducer to the code contains transformer sensors 1-10 with windings 11 older than 12 and younger 13 bits, threshold elements older than 14 and 15 and younger 16-20 bits, connected respectively to the decoders older than 21 and younger 22 bits. Dov, digital indicators 23 and 24, 25 bits synchronized. In addition / in FIG. Figure 2 shows ferromagnetic measles 26 enclosing pipe 27 in which the transformer sensors are located. It is possible to place transformer sensors outside the pipe, in this case ferromagnetic measles is located inside the pipe. The linear motion to code converter operates as follows. When the korem 26 (fig. 2) reaches the position at which it closes the magnetic circuit of sensor 1, the signal from windings 13 and 12 is fed to the inputs of threshold elements 16 and 17 (fig. 1), and from the outputs of these elements via junior decoders 22 and the older 21 bits are on digital indicators 24 and 23, respectively. The entire measurement range in the example is divided into two ranges. At the indicated position of the core 26, the indicator 24 highlights the figure 1, and the indicator 23 - the figure 0. With further movement of the core 26, the latter takes a position at which it closes the magnetic cores of the sensors 1 and 2 in accordance with the condition 2 D Е 4, g: de P - length Cor, L - discrete step, and the signals are fed to the inputs of the threshold elements 16 and 17. From the outputs of elements 16 and 11, the signal goes to the inputs of the decoder 22, from the output of which the signal flashes 24 in the indicator 24, i.e. number of the second discrete point. At the same time, the digit 1 on the indicator 24 goes out, and on the indicator of the higher bit 23 continues the digit O (the first measurement subband) continues to be highlighted. When moving the core 26, the signal from the winding 13 decreases, the threshold element 16 is turned off, and the signal to the input of the decoder 22 receives a signal only from the output of the threshold element 17. From the output of the decoder 22, the digital indicator 24 receives a signal to highlight the number 3, and 2 ; ikatore junior bit From the decoder 21, the digital indicator 23 receives a signal that continues to highlight the digit O throughout the entire first measurement subband including 10 first discrete points. The state of the threshold elements of the low-order indication channel for the first subband of the converter with five transformer sensors in each subband is shown in the table. The last tenth discrete point in the first subband is formed by including the threshold elements 20 and 15, i.e. when the measles occupy a position in which the magnetostrands of sensor 5, which is the last sensor of the first sub-band, and sensor b, which is the first sensor of the second sub-band, are closed. At the position of the core 26, when the magnetic cores of the sensors 5 and 6 are closed, the signals of the sensors arrive at the threshold elements 14, 15 and 16, 20. From the outputs of the threshold elements 14, 15 and 16, 20, the signals enter the decoder 22 and 21. signals from the threshold elements 14 and 15 and the decoder 22 includes a 25-bit synchronizer which outputs a signal for ignition of the digit O in the low-order indicator 24 and the digit 1 in the high-order indicator 23. Upon further movement of the core 26, the threshold elements 20 and 14 are turned off, and the threshold elements 16 and 15 remain on, as a result of which the presentation indicators display the numbers 1 and 1 indicating that the measles have moved to the first discrete point in the second subrange measurements. When moving in the opposite direction, measles 26 closes the magnetic cores of sensors 6 and 5; in the sequence indicated, the sensor issues the first signal, and the signal comes from the sensor. 5, the threshold elements 15, 16, 14 and 20 are included, the signals from which trigger the indicators through the decoders 22 and 21 are highlighted on the indicators 24 and 23, the numbers O and 1, respectively. At the same time, at the moment when the threshold elements 15 and 16 are turned off, the synchronizer 25 bits through the decoder 21 of the higher bit W: wins the signal to turn off the digits {I: 1 1 in the indicator 23 and on the activation of the figure O in the indicator 24. Thus, the indicators 24 and 23 highlights the figures O and 9, indicating that the measles is in the region of the ninth discrete point in the first subrange of measurements. The transducer operates logically in the entire measuring range. Claims of the Inverter Linear displacement transducer into a code containing ferromagnetic measles, transformer sensors with primary, windings and secondary windings of low and high order, the primary windings are connected in parallel and connected to an alternating voltage, the secondary windings are combined in groups, the secondary, windings in groups of the best bit are interconnected in pairs and counter, and the decoders are young