SU658527A1 - Device for control of automatic operator lines - Google Patents

Description

one

The proposed device relates to the field of electroplating and can be used in automated systems to control auto-operation lines of the type, where the required reliability and ACCURACY of positional movement of auto-operators is required, as well as in automated systems of automatic-mechanical and assembly production.

A device for controlling auto-operators of electroplating lines is known, comprising control program blocks, a control panel, a line loading analyzer and precision and coarse time blocks that contain pulse counters CIj

However, this device does not allow for monitoring the correctness of the auto operator's movement, as well as to determine the numbers of the faulty sensors at work positions.

The closest in technical essence to the present invention is a device comprising serially connected sensors, a position number reading unit, an auto operator control unit, and a digital display unit L2.

The disadvantage of this device is low reliability, causing addressing errors due to sensor malfunction and missing input signals. Moreover, the probability of the occurrence of the indicated, omissions and the occurrence of error cracking increases with an increase in the number of address positions. These errors lead to disruption of the process flow.

The aim of the invention is to increase the reliability and speed of the device. This goal is achieved

8 in that a device for searching for a faulty position sensor is inserted into the device, connected in series between the unit for reading the position number and the digital indication unit,

containing a series-connected delay element, the first OR element, a trigger, a reversible counter and a decoder, the outputs of which are connected respectively to

5 inputs of the second and third OR elements, and the output of the second OR element is connected to the first input of the AND element, and the output of the third OR element is g by the first input of the fourth

0 of the OR element, the second input of which is connected to the output of the AND element, the second input of which is connected to the Btjxod of the delay element and the second input of the reversible counter, and the trigger inputs are connected to the input of the faulty position sensor search unit, the output of which is connected to the fourth element OR. The drawing shows the block diagram of the device. The device (see drawing) consists of an auto operator 1 position block, containing an initial position 2 for an auto operator and work positions 3, position sensors, 4 located at work positions, 3 along an operator line, a read block of position number 5, an auto operator control block 6, the digital display unit 7 and the search unit of the inadequate sensor 8, consisting of the trigger 9, the reversible counter of the decoder 11, the first element OR 12, the delay element 13, the second element OR 14, the AND 15 / third element 16 and the fourth 17 elements OR . The device works as follows. At the initial moment of operation of the device, the autooyager is located at the initial position of the 2 position block 1 When the power supply is turned ON, the pulse counter 10 of the Search block of the Faulty sensor 8 reverses the initial number two, and the digital display unit 7 is set to zero, then from the block The auto operator 6 controls the signals to the auto operator actuators and sets it in motion from the initial position 2 forward to one of the working positions 3 of the position block 1. At the working positions 3 positional sensors are installed. 4, the outputs of which are connected via the first group of outputs of the block of reading the position number 5 to the control unit of the autopilot 6. The latter controls the auto operator and directs it to the working positions 3 specified by the technological program. In addition, the control unit of the auto operator b controls the operation of the block ka digital display 7, the first input of which receives a signal from the control unit of the auto operator 6, when the auto operator moves, and the second input - when the auto operator moves back. In the first case, in the digital display unit 7, there is a summation of pulses coming from the output of the search block of the faulty sensor 8, in the second case, pulse subtraction, and both the summation of pulses and their subtraction is accompanied by a record in the digital display unit 7 in order Operational position number 3. A second group of outputs of the unit of reading number number 5 is connected to the search unit of the faulty sensor 8, and the first inputs of the trigger 9 and the first element OR 12 receive signals when the auto-operator initiates positional dates Ikov 4 having at their continuous numbering odd numbers, while the second inputs of the flip-flop 9 and the first OR gate 12 receives signals upon excitation autooperator positional sensors 4 having even numbers. When the auto operator moves from the initial position 2 forward, the position sensor 4 of the first (odd) working position 3 is excited and its OUTPUT signal goes through the readout number 5 to the first trigger code 9 and switches it to the Subtraction state, and through the first input of the first element OR 12 and the delay element 13, to the counting input of the reversible counter 10, in connection with which, out of the initial number two recorded earlier in the reversing counter 10, a unit is drawn. As a result, a unit remains in the reversible counter 10, which corresponds to finding an auto operator in an odd working position 3.. When this entry in the reversible counter 10 units leads to the excitation of the outputs of the decoder II connected to the output of the reversing counter 10. At the same time, the signal from the output of the delay element 13 is fed to the first input of the element 15, the second input of which receives a signal from the output of the second element OR 14 , on the first input of which there is a signal from the output of the decoder 11. The output signal of the AND 15 element is fed through the second input of the fourth element OR 17; to the third input, the digital display unit 7, in which the unit is registered, which corresponds to the location of the auto operator at the first working position. Upon further movement of the auto-operator, the position sensor 4 of the second (even) working position 3 rises up its signal through the reading unit of position number 5 enters the second input of the trigger 9 and switches it to the Addition position, and through the second input of the first element OR 12 and the delay element 13 enters the counting input of the reversible counter 10, as a result of which it records the number two, which corresponds to finding the auto operator on an even working position. The entry in the reversible counter 10 of number two leads to the initiation of the next output of the decoder 11. At the same time, the signal from the output of element 13 is fed to the first input of element 15, the second input of which receives a signal from the output of second element OR 14, the second input of which has a signal from the second output of the decoder 11, since in the reversible counter 10 the number two is written. The output signal of the element 15 through the above-described circuit is fed to a digital display unit 7, JB of which registers the number two, corresponding to finding the auto-operator at the second working position 3,

When the auto operator passes in the forward direction of the third and all

 after shining odd working positions 3, trigger 9 switches to the Subtraction state, in reverse

The counter 10 records a unit, and in the digital display unit 7, odd numbers of the working positions 3 are registered in order of increasing.

Similarly, when the automaker passes the fourth and all subsequent even positions 3, the trigger 9 switches to the Addition state, the number two is recorded in the reversible counter 10, and in the digital display unit 7 the even numbers of the working positions 3 are recorded in ascending order.

When the auto operator moves in the opposite direction, i.e. to its original position 2 of the block of positions 1, the device operates in a similar way. The only difference is that at the first input of the digital display unit 7 there is no signal corresponding to the auto operator movement forward, and to its second input there comes a signal from the auto operator operator control unit b, corresponding to the auto operator movement back, therefore the digital display unit 7 will register the numbers of the working positions 3 or the numbers of the position sensors 4 in order of their decrease.

If position sensor 4 fails, for example, at an odd working position 3 of position block 1, trigger 9 does not switch to the Subtraction state and in the reversible pulse counter 10 the number two will remain recorded, to which it will be added, one at the next even working position 3. Thus in the reversible counter 10 will be recorded the number three, resulting in the third output of the decoder 11 turns on a signal that through the first input of the third element OR 16 and the first input of the fourth element OR 17 will go to the digital display unit 7 for reg tration of an odd number of faulty sensors. The signal from the output of the third element OR 16 is used to stop the auto operator.

In case of failure of the position sensor 4 on the even working position of the block of positions 1, the trigger 9 does not re-accumulate

is set to state

and in the reversible counter 10, the unit will remain recorded, from which on the next odd working position 3 the unit is subtracted. As a result, a zero will be recorded in the reverse clock counter 10, so the fourth output of the decoder 11 turns on a signal that through the second input of the third element OR 16 and the first input of the fourth element OR 17 goes to the digital display unit 7 to register the even number of the faulty sensor. In addition, the signal from the output of the third element OR 16 is used to stop the auto-operator.

The use of the proposed device in automated systems for the control of auto-operator lines eliminates the auto-operator’s addressing errors caused by sensor failure, and the associated technological process disturbances, and also makes it possible to quickly detect and eliminate malfunctions in the system.

Claims (2)

1. A device for controlling automatic operating lines, comprising serially connected position sensors, a position number reading unit, an automatic operator control unit and a digital display unit, characterized in that, in order to improve the reliability of the device, a defective position sensor search unit is inserted into it, connected in series between a position number reading unit and a digital display unit. 2. The device according to claim 1, characterized in that, in order to improve the speed of the device, the block for searching for a faulty position sensor contains serially connected delay elements, the first OR element, a trigger, a reversible counter and a decoder, the outputs of which are connected respectively to the inputs of the second and the third element OR, and the output of the second element OR is connected to the first input of the element AND, and the output of the third element ORIS the first input of the fourth element OR, the second input of which is connected to the output of the element AND, the second the input of which is connected to the output of the delay element and the second input of the reversible counter, with the flip-flop in turns being connected to the input of the block for finding a faulty position sensor, the output the second is connected to the output of the fourth ulemeite OR. Sources of information taken into account in the examination eight 1. Authors certificate of the USSR 476334, cl. & 23 on 5/68, 1972, 2. USSR author's certificate number 484266, cl. G 23 B 5/68, 1972.