SU1564656A1 - Device for reading information from movable objects - Google Patents

Abstract

The invention relates to automation and can be used, for example, in automated systems for the storage and metering of goods. In order to increase the accuracy of the device, position sensors and means of detecting malfunction of information sensors are introduced into it, and due to the position sensors, monitoring is performed immediately before reading the information, which ensures accurate and reliable reading of information. 1 il.

Description

The invention relates to the field of automation and can be used, for example, in automated systems for the storage and metering of goods.

The aim of the invention is to improve the accuracy of the device.

The drawing shows the functional diagram of the device.

The device contains a block of 1 information sensors, a synchronization sensor 2, a second and first sensors 3, 4 positions, a shaper 5 codes, a first to third shaper 6-8 pulses, an inverter 9, a block of inverters 10, elements And the first 11, second 12 and third 13 groups, the first and second elements OR 14, 15, the first and second triggers 16, 17, block 18 of the display. The drawing also shows the unit information master 20 and the movable object 21.

The device works as follows.

In the initial state, when there are no objects in the working area of the device, from which information needs to be read, the driver is in the sensitivity zone of the information sensors 1 and provides at their output levels corresponding to single information. The synchronization sensor and the position sensors in the zero state, prohibiting the passage of signals through the elements And 11-13.

At the approach of the load, the first position sensor 4 is triggered, on the signal of which a single impulse is formed at the output of the imager 7, allowing the operation of the elements 11 of the first group.

If all the information sensors are in good condition, they will have one output at their outputs.

but

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ate

9

Nitsi, and after the inverter unit 11 - zeros. Therefore, at the outputs of the element AND 1 1, the element OR 14, there will be zeros that do not change the states of the trigger 16.

If one of the information sensors 1 is faulty, for example, it is broken, then its output will contain zero information, which will result in setting trigger 16 to one state and turning on the display unit, on which a break type is displayed.

With further movement of the object, the setting device 20 is taken out of the sensitivity zone of the information sensors 1, and then the second sensor 3 is triggered and, on its leading edge, at the output of the block 8 forms an “i-rc pulse allowing the operation of the element I 12. If the sensors 1 are in good condition , there are no short circuits, then there will be zero signals at their outputs, and therefore, the output of the OR 15 element will also have a zero level and the trigger 17 will remain in the zero state.

If at least one sensor, for example, is short-circuited and has a single level at its output, then it will pass through the element 12 and the element 15 and set trigger one 17 into one state, which will result in the Closure The outputs of the flip-flops 16, 17 are connected to the control inputs of the elements And 13 of the third group and, being in a single state, prohibit their operation.

Upon further movement of the object, the synchronizing sensor is triggered at the time of combining with the information carrier fixed on the object. If the triggers 16, 17 did not fix the malfunction, then the information from the sensors 1 will be output to the outputs of block 13, which are the outputs of the device. At the end of the reading on the falling edge of the sensor 4, the shaper 3 generates a reset trigger pulse.

Thus, by ensuring that the information sensors are properly monitored directly

Before reading the information, the accuracy of reading the information is improved.

Claims (1)

Invention Formula A device for reading information from moving objects, containing a block of information sensors, a synchronization sensor, a code generator, characterized in that, in order to improve the accuracy of the device, it contains two position sensors, a display unit, a code generator, contains three groups of elements AND, the AND element, two triggers, two OR elements, three pulse shapers, an inverter and an inverter unit, whose outputs are connected to the first inputs of the corresponding AND elements of the first group, and the inputs with the first inputs of the corresponding The first position sensor is connected via an inverter to the inputs of the first pulse driver and directly to the inputs of the second pulse driver, the output of the first pulse driver is connected to the first inputs of the first and second triggers, and the output of the second pulse driver is with the second inputs of the elements of the first group, the input of the third pulse generator is connected to the output of the second sensor position of the output - with the second inputs of the element Commodity And the second group, the inputs of the first and second elements OR are connected respectively to the outputs of the elements And the first and second groups, and the outputs - with the second inputs of the corresponding triggers, the first outputs of the triggers are connected to the corresponding inputs of the display unit, and the second outputs - with the corresponding inputs of the AND element whose output is connected to the first inputs of elements AND of the third group, the outputs of elements AND of the third group are the outputs of the device, the inputs of the second group are connected to the outputs of the information sensors, and the inputs of the third group ppy connected to the sync sensor. Editor 0.Speedyh Compiled by N.Milev Tehred M.Hodanich Proofreader M. Pojo Order 1162 Circulation 555 VNIIGSH of the State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Subscription