SU600398A1 - Moving object weighing apparatus - Google Patents

Description

. -3 Research Institute for Modes of Operation and a unit 16 for subtracting the tare weight connected to the control unit 7, the operating mode switching unit 14 and the pulse counter 17 connected to the control unit. The device works as follows. To determine the weight of the cargo transported in a moving object, the loaded and empty moving object is weighed and then the difference between these weights is determined. All objects are divided into groups by capacity. The object of the first group (with the smallest carrying capacity) has been assigned good numbers from 01 to p; the second, with p + no t, etc. Thus, according to the number of the movable object 13, it is possible to determine its carrying capacity and the period of the dynamic component yush and its load. The code of the number of the movable object 13 is fixed on the non-special storage medium 12, made, in the form of a lattice structure. The information carrier 12 is mounted on the movable object 13 so that it can modulate with its elements a luminous note falling on the photosensor 11, and thus read it out. Depending on the location of the device (load point or unloading point), it can operate in one of two modes. When the device is at the loading point, it works as follows. Upon loading, the empty base object 13 is pre-weighed. When it is moving, but the platform 1, the photosensor And reads the code of the object number 13 from the carrier 12 of information, which is recorded in the register 10 of the object number. In addition, one of the bits in the register of the object number is recorded as an indication of the direction of the movement generated by the photosensor AND and indicating the direction in which the iodus object 13 is moving (to the loading point of it from it). After the end of the readout, the code of the moving object number and the indication of its direction of movement are transmitted from the register 10 of the object number to the control unit 7, which generates the command signals "Start of operation," Resolving accounts, "Start of division, and" End of del. Depending on the number of the node object and, consequently, of its lifting capacity, the control unit generates a certain duration of the ethn signals. In addition, when the object moves to the loading point (the direction of movement is determined by the state of discharge of the direction sign), control unit 7 writes the number of this object into the corresponding bits of the buffer register 15 and sets the operating mode switching unit 14 to the position the OR 6 circuit is connected to the subsequent (for the bits in which the object number is written) the bits of the buffer register 15. In the simplest case, the operation mode switching unit 14 can be made in the form of two input keys. The weight sensor 2 generates voltage pulses with a frequency proportional to the weight of the object, which are applied to the AND 3, 4 circuits. The signal of the control unit 7 "Starting operation sets the 17 nmuls counter to the initial position, and the control trigger 9 through the PIJIH 8 circuit "one. At the same time, the locking potential of the control trigger 9 is connected to the AND 3 circuit, and the unlocking potential to the AND 4 circuit. But the sigpal of the control unit "Account Resolution opens the AND 4 circuit and the pulses of the weight sensor 2 pass to the counting input of the counting trnger 5, from whose output is reduced twice through the OR 6 element and the operating mode switching unit 14 and go to the buffer register 15. Upon expiration of the time T i equal to half of the Nernod of the dynamic component of the load for an object of a given capacity, the control unit 7 generates a signal "End of division, which sets the trigger of the 9th control to position" O. In this case, the AND 4 circuit is closed, and the AND 3 circuit is opened and the pulses of the weight sensor 2 are received through the OR circuit 6 and the operating mode switching unit 14 to the buffer register 15 without division. Due to the end of the “Resolution Resolution” block, the control unit 7 generates the “Start of division” signal, which through the OR 8 circuit again sets the trigger 9 of the control to “1,” and the signals of the weight sensor 2 go through the AND 4 circuit to the counting input of the counting trigger 5 . At the end of the signal "The resolution of the counting circuit And 3, 4 is closed, the weighing is stopped. In this case, the weight of the object recorded on its number is recorded in the buffer register 15. When a loaded object 13 moves in the same way, its number read by the photosensor 11 from the carrier 12 of information and the direction of motion, which are then rewritten into control unit 7, are recorded in the register 10 of the object number. The latter connects the corresponding bits of the buffer register 15 with information about the weight of the empty object to the block 16 of the tare weight read and sets the operation mode switching unit 14 to the position where the output of the OR circuit 6 is connected to the input of the tare weight reading unit 16. The unit for subtracting the tare weight is made, for example, in the form of a binary counter and a matching circuit. Next, the control unit 7 generates command signals "Start of operation," Resolution of the account, "Start of division and" End of division, the duration of which depends on the number of the movable object and, consequently, its capacity. The pulses of the weight sensor 2 through the AND 3, 4 circuits, the counting trigger 5, the OR 6 circuit and the operating mode switching unit 14 are fed to a tare weight sub unit 16, where they are added by a binary counter. The summation of the number of pulses equal to the weight of the empty object, the contents of the counter becomes equal to the contents of the corresponding bits of the buffer register 15 connected to the tare weight subtraction unit 16. The tare weight subtraction unit and all subsequent pulses of the sensor 2, which characterize the net weight, work The transported material is passed through a block 16 subtracting the tare weight into the counter 17 pulses. Thus, after loading the loaded object, the net weight of the cargo transported by it will be recorded in the pulse counter, and the object number in the object number register.

If the device (load platform 1, frequency weight sensor 2 and photo sensor 11; cannot be installed in close proximity to the loading point, there may be cases in which several empty objects are waiting for loading, between the device weighing platform 1 and the loading point. In this case, it becomes necessary to store the weight and numbers of several empty objects. Therefore, the capacity of the buffer register is selected so that information on the maximum possible number can be entered into it. e objects waiting for loading (in bolschiistve cases this number is 3-5). After loading vzveschivani and one of these items of information about it is eliminated from the buffer register, and in its place a new one can be recorded.

When the device is located at the point of discharge, it works as follows.

The loaded dump truck, heading towards the unloading point, is pre-weighed. This photosensor I reads the code of the number of the sub-object 13 from the carrier 12 of information and writes it into the register 10 of the number of the object. In addition, the indication of the direction of movement generated by the photosensor 11 is recorded. After the end of the reading, the code of the object number and the indication of the direction of movement are rewritten into the control unit 7, which writes the code of the object number into the corresponding bits of the buffer register 15. In addition, the control unit by means of block 14 switching modes of operation connects the output of the ILP circuit 6 to the subsequent (for bits with 1; information about the object number) bits of the buffer register 15. Then the control unit generates a command signal “Patcho work”, “Account resolution,” Start of division, “End of division, nm pulses of the 2 weight sensor via AND 3, 4, counting flip-flop 5, PLI 6 circuit and block 14 for switching the operating modes of the buffer register 15. After At the end of the need, the buffer register will record information about the number and total weight (weight of the load and tare) of one or several objects.

When an empty object is moving, the code of its number read by the photosensor 11 is transmitted together with the sign of the direction of movement to control unit 7, which connects the corresponding bits of the buffer register 15 with information about the total weight of the object to block 16 for subtracting tare weight. In addition, the control unit of the unit of the operating mode switching unit 14 connects the output of the PLP 6 circuit to the input of the tare weight subtracting unit 16 and generates command signals, Work Patch, Account Cause, Dividing Patch, and Dividing End. The PMs of the weight sensor 2 through the P 3, 4 circuits, the counting trigger 5, the PLP circuit 6 and the block 14 of non-switched operating modes are passed to the tare weight subtraction unit 16, where they are summed by a binary counter. After completion of the control unit 7 from the control unit 7, pulses of the reference frequency pass through the TLI 6 and 6vioK 14 switching modes in the unit 16 for the tare weight, which are added to the tare weight of the object recorded previously in the binary counter. The same impulses are passed to counter 17. After the contents of the two-block counter of the subtracted tare weight become equal to the contents of the corresponding bits of the buffer register 15 (containing information on the total weight of the object), the coincidence circuit works

The unit reads the tare weight; the control unit stops the formation of pulses. In this case, in the counter 17 pulses, the net weight of the load delivered by the object is recorded, and in the register of the object number - the number

this object.

The control unit 7 is made in the form of a generator of a reference frequency and a distributor of conductors, representing, for example, a counter with a decoder. Switching the device from one operation mode to another is accomplished by changing the order of the control sigals, for example, by means of a switch.

Thus, the proposed device

provides an opportunity with higher accuracy, compared with the known, the inflection of moving objects, since the work switching switching unit 14 and the buffer register 15 allow to carry out the continuous weighing of the loaded and empty object and then, with a certain net weight of the transported cargo, to operate with the received actual the weight of the object, not the average for a given load capacity tare.

Claims (3)

1. Authorship certificate USSR № 356478, cl. G 01G 23/36, 1970. 2. IATENT SSh.L No. 3192533, cl. 177-1, ord. 1 to. 1965. 3. USSR author's certificate number 521475 cl. G 01G 19/02, 1975.