SU562835A1 - Computing device for determining the ratio of the sizes of the spherical bodies - Google Patents

Description

The proposed device relates to computational technology and can be used to automatically control the physical parameters of the finished product, which is a stream of spherical bodies, in particular, one of the most promising types of metallurgical raw materials - iron ore pellets.

The known devices are for determining the size of spherical bodies.

One of these devices, based on detecting the number of bodies at a certain section of the stream using a television camera, is complex and has low reliability of television equipment 1.

In addition, this device assumes a constant body flux density, which is not always observed in practice.

It is also known a device for determining the ratio of the sizes of spherical bodies, containing sensors, elements AND, OR, a key, summing and subtracting counters, a memory register, to the output of which indicator 2 is connected.

The device is based on the extraction using an induction sensor of pulses of various amplitudes and calculating the relative number of pulses of low (high) amplitude corresponding to the pellets of small (large) diameter. This device has insufficient accuracy due to the fact that the pulse amplitude may depend not only on the size of the pellets, but also on their speed of movement, on the distance to the sensor, on the density of the raw pellets and on the content of magnetic components in the material. For non-ferromagnetic bodies this device is generally not applicable, and for its use in real conditions of metallurgical production with fluctuations in the chemical composition of the raw material, it is necessary to additionally control the content of magnetic components.

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

Claims (2)

This is achieved by the fact that the sensors are made photoelectric and are installed in series in a plane parallel to the plane of motion of the flow of spherical bodies. the outputs of the extreme photoelectric sensors are connected to the first inputs of the first and second elements I, the second inputs of which are connected to the output of an average photoelectric sensor connected to the input of the summing counter, the outputs of elements AND connected to the inputs of the element OR, the output of which is connected to the input of the deactivating counter connected to the output through a key with a memory register, a control input of the key is connected through the entered descrambler with the output of the summing counter and through the input of the delay element with the inputs reset both counters. The drawing shows a block diagram of the proposed computing device. Three photoelectric sensors / are located in a plane parallel to the free-falling stream of controlled spherical bodies at a distance from another (d-diameter of the spherical body). The middle sensor is directly connected to the input of the summing counter 2. The inputs of the And 3 elements are connected to the outputs of the sensors /, and the outputs of the AND3 elements via the OR 4 element are connected to the subtractive counter 5. The capacity of both counters is determined by the required accuracy of the calculations. For convenience of displaying information, it is preferable to use counters operating in the decimal number system. The output of the summing counter 2 is connected to the decoder 6, designed to fix the zero code of this counter, the output of which is connected to the control input of the key 7 and through the delay element 8 to the reset inputs to zero of the triggers of the summing counter 2 and reset to one. 5. The output of the detracting counter 5 through the key 7 and 1C is connected to the memory register 9, and the output of the latter to the indicator 10. The device operates as follows. Electric photosensors are located in a plane parallel to the flow of monitored bodies. On the opposite side of the stream is the sensor illuminator. When the sensor is dimmed, the latter generates an electrical signal. The pulses from the middle sensor are summed by the counter 2. To the input of the subtractive counter 5, pulses are received from element 4 only when the falling body darkens the middle sensor together with one or two extremes. The triggers of the summing counter 2 in the initial state are set to the zero position, and the triggers of the deducting counter 5 are set to one. During operation, the summing counter counts the number of pulses corresponding to all bodies darkened by the average photo sensor, and the subtracting counter subtracts from the maximum code the number of pulses corresponding to bodies darkened by the average photo sensor that exceeds the size d. Suppose that the capacity of both counters is 100. In this case, after passing 100 bodies past the average photo sensor, the counter code will become zero, which will cause a signal on the output of the decoder 6. This signal will open the key 7, through which the code found in the subtraction of counter 5 , goes into the storage register 9. After some time delay, the signal appears on the output of the delay element 8, which will cause the counters to be reset, after which the cycle of calculations is automatically and repeated. The code transmitted to the nominative register 9 via key 7 is an integer number of percentages of the number of bodies less than d in size relative to the total number of bodies passing by among its sensor. The result of the calculation is indicated by a digital indicator 10. If it is necessary to increase the accuracy of calculation by one order of magnitude, the capacity of the counters is increased by one decimal place. The effect of the use of the proposed device is to improve the accuracy of the determination regarding the number of bodies with a size less than d and simplify the equipment. Claims Computing device for determining the ratio of the sizes of spherical bodies, containing sensors, elements AND, PI, key, summing and subtracting counters, memory register, to the output of which the indicator is connected, which is In order to improve the accuracy of the device, it has sensors that are photoelectric and are installed in series in a plane parallel to the plane of motion of the current of the spherical bodies, the outputs of the extreme photoelectric sensors are connected to the first inputs of the first and volts And, the second inputs of which are connected to the output of an average photoelectric sensor connected to the input of a summing counter, the outputs of elements And are connected to the inputs of the OR element, the output of which is connected to the input of a detracting counter connected to the output via a key with a storage register, the control input of the key is connected through the entered decoder with the output of the summing counter and through the input delay element with the reset inputs of both counters. Sources of information taken in connection with the examination: 1. Author's certificate N ° 209025, cl. From 04 To 5/02, 1965. 2. The author's certificate number 448368, cl. G 01 N 15/02, 1972.