SU994916A2 - Device for registering remote discrete displacements - Google Patents

Description

3E com of the current visual reference, the output of the second logic circuit AND is connected to the first input of the third logic circuit AND, the second input of which receives a signal from the output of the first logic circuit AND, while the output of the third logic circuit is connected to the input of the reversing motor. The drawing shows a block diagram of the device. The device consists of a measuring aerodynamic probe 1, a reversible electric motor 2, a linear displacement mechanism,. from the gearbox 3, lead screw k and movable carriage 5, photo sensor 6 with disc 7 and light 6, recording unit 9 with reversible counter 10 pulses, first logic circuit 11, block of current visual reference (print or / and) buffer unit for data input into computer / 12, master (software) device 13, time relay 1, control circuit of synchronous motor reverse and pulse counter 15, containing the initial state block 16, blocks 17 and 18 of the movement direction and start device 19. The register of 6lok 9 also includes a set of 20 visual readings of set values, the second 21 and third 22 logical circuits And. The aerodynamic measuring probe 1 is connected with the U-shaped manometer tube 23 using pneumatic wires 2 and 25 and is kinematically connected with the mechanism of the angular installation of the probe 26 located on the movable carriage 5. A hole 7 is connected to the gearbox 3 The photo sensor 6 is located, illuminated through the disc holes by the lamp 8. The lead screw 4 is kinematically connected with the disk 7 of the photo sensor 6 connected to one of the inputs of the pulse counter 10, the other two inputs are connected to the movement directions 17 and 18 we are 15 Management Board. The first input of the counter 10 pulse is connected to the block 12 of the current visual reference, and the second output is connected to the first input of the first logic circuit 11, the second input of which is connected to the first output of the driver software 13 and the output to the second input of the third logic circuit 22 , with the input of the program driver 13 and with the input of the initial state unit 16, the output of which is connected to the movement direction blocks 17 and 18, the second inputs of which are connected to the start device 19. The second output of the setting software device 13 is connected via a time relay to the input of the start device 19, and the input of the setpoint visual reading unit 20 is connected to the first output. The inputs of the second logic circuit 21 are connected to the output of the current visual reference block 12 and the visual reference set 20, and the output to the first input of the third logic circuit 22, the output of which is connected to the reversing motor 2. The second outputs of the direction 17 and 18 blocks The movements are connected to a reversing motor 2. The device operates as follows. The software device 13 is entered (for example, recorded by any known method) in a given order, the set of coordinates of the points at which the measurement is made. Here, the code of the sign of the direction of movement (for example, in the form of a different combination of binary digits — in the simplest case, these may be codes 1, O) is entered, since a given sequence of measurements may provide for reverse movement with respect to the current measurement point. From the first input of the driver (software) device 13, the code of the coordinate to be set is entered in the first logic circuit 11 and simultaneously in the visual reference block 20 of the set values. Through the time relay H and the start device 19 of the control code 15 of the directional indication feature coming from the second output of the driver 13, the movement direction unit 17 or 18 is set to an operating state, for example, the movement direction unit 17 is set to the working state. An initial synchronous start of the reversing motor 2 and the reversing motor is made.

the counter 10, for example, the engine starts to rotate to the right side, and the counter works on the addition of pulses. At the same time, the photodisk 7 begins to rotate and the carriage 5 moves. Luminous flux from the llamas; The kidneys 9 through the holes in the disk fall on the photo sensor 6, which produces pulses, which are counted by the counter 10.

The output of the counter is associated with the block 12 of the current visual reference 12. In addition, each digit of the counter is also associated with the first logic circuit 11, which compares the current readings of the counter with the program value stored on the driver 13.

When the processing result coincides with the set value, the first logic circuit 11 generates a pulse, which is fed to the second input of the third logic circuit 22, to the initial state unit 16 and to the set device. 13 Signals from the visual set point unit 20 and the current visual count unit 12 are fed to the input of the second logic circuit 21. If the result of testing is the same as the second logic circuit. The second logic circuit 21 generates a pulse, which is fed to the first input of the third logic circuit 22. If stroystvah recording unit 9 no faults, the inputs to the third logic circuit 22 simultaneously receives the pulses from the second 21 and first 11 logic circuits. With this, circuit 22 produces a pulse to stop the reversing motor 2.

The signal received from the first logic circuit 11 to the driver 13, to the latter automatically enters the new program value and the code of the direction sign of movement, which through the time relay 14 and the start device 19 enters the movement direction block 17 or 18. The time relay delays for a certain period required to perform the necessary measurements with a probe, the device's automatic start signals and the code for the sign of the direction of movement. After working out the relay, the time interval for the block 17 or 18 of the direction of the transition

Placement of the feature code, for example, the feature code will go to the travel direction unit 18, which is set by the same to the working position. At the same time, the device 19 starts the signal to automatically start the device. This ensures that the engine 2 and the counter 10 are started up in reverse directions and the engine will rotate to the left, and the counter will work to subtract the pulses. Similarly, when the current code of the pulse counter coincides with the program code of the driver and the readings of the current visual reference block with the code value on the visual reference block of the specified values, the first logic circuit 11 and the second logic circuit 21 generate pulses that stop the motor through the third logic block 22 and from the first logic circuit 11, through the block 16 of the initial state, the motion direction block 18 returns to the zero state of the circuit. In this case, the following program value is automatically entered on the driver.

The operation in the automatic mode continues until the last programmed value entered into the driver is tested by the means. With the help of the angle setting mechanism 26 and the U-shaped manometer 23, the orientation of the probe 1 along the flow is necessary during the measurements.

If a failure occurs in one of the devices of the registration block 9, for example, the first logic circuit 11 fails, then the pulses from the first and second logic circuits will come to BI circuit 22 at different times or circuit 11 will not generate a control pulse at all, since the malfunction will break the interaction of the codes supplied to the circuit 11 from the counter 10 and the software device 13. Hence the logic circuit 22, issuing a control impulse to the engine 2 only if it receives two impulses from the circuits 21 and 11 at the same time, the engine will not operate l 2 must be stopped manually according to the readings of the visual reference blocks 12 and 20,

Claims (1)

Thus, the introduction of the second and third logic circuits and a set of visual readings of the given values, the input of which is connected to the first output of the driver, the output is connected to the second logic circuit, the input of which is connected to the block of the current visual reference, the output of which is connected to the third logical a circuit whose second input is connected to the output of the first logic circuit, and the output is connected to the input of a reversible electric motor, makes it possible to avoid false stops of the engine and the aerodynamic probe connected to it due to Oev the engine. This makes it possible to increase the reliability of operation of the device, for example, during gas-dynamic tests of turbo-grid models. Claims of the Invention A device for recording remote discrete movements of 9 b ae. ev, no. characterized in that, in order to increase the reliability of the device, a second and a third AND and a visual reference of the set values are entered into it, the input of the block is connected to the first output of the driver, and the output is connected to the second AND logic, the second the input of which is connected with the block of the current visual reference, and the output is connected to the third logic circuit AND, the second input of which is connected with the output of the first logic circuit AND, and the output is connected to the input of the reversing electric motor. Sources of information taken into account during the examination 1. USSR author's certificate number 905b 7, cl. G 01 O 3/00, 25.06.80.