SU1033870A1 - Flat object surface area measuring device - Google Patents

Abstract

DEVICE FOR MEASURING PLC MEANS OF PLANE OBJECTS, CONCERN} our width sensor in the form of linear capacitance capacitive cells, setting driver, pulse generator, frequency divider, logic circuit, register, RS-flip-flop, switch and counter, and ch. e with the fact that, in order to increase the accuracy, it is equipped with three subtraction blocks, a divider. a block of trays connected to a counter, a comparator and a voltage source connected to the first input of the comparator, a pulse generator, a frequency divider, a logic circuit, a register and a switch are connected in series, the pulse generator is connected to the inputs of the displacement setter and a width sensor, which codes connected to the input and the inputs of the switch; the output of the motion setpoint device is connected to the second register register and the f -rider RS code, the S-input of which is connected to the register reset output; The first and second subtraction blocks are connected to the reference output 1 of the width sensor, the second inputs of the subtractors are connected to the switch outputs, and the codes are connected respectively to the first and. to the second inputs of the divider and the third subtraction unit, the code of the post Eego is connected to the third input of the divider, the output of which is connected to the first code of the block. logic, to the second Ekoda which pod00 the output of the comparator is key, the second and threoo; Comms are connected to the first and BTopsJM 00 triggers of the switch, respectively.

Description

The invention relates to a contour measuring device, in particular, to devices for measuring areas of flat objects, and can be used, for example, in biofilament studies for measuring leaves of a reet. A device for measuring the area of flat objects containing a transducer for transporting a drum with longitudinal slits, the illuminator is known. , located inside the drum, a line of photodetectors, placed outside of the yraban, two roll presses, input roll presser mechanism, meter photostriem receiver, ways, integra Ator and recorder, as well as the removal mechanism of the G11 entrance roller roller. “A shortcut device is the design complexity and high energy consumption. The closest to the invention is a device for measuring the area of flat objects containing a width sensor in the form of a capacitive cell line, a displacement target, a pulse generator, a frequency divider, a logic circuit, a RS-trigger, a switch and an G2 counter. The drawback of the device is that the accuracy of measurement due to aa errors resulting from incompletely taking the fractions of the cell area partially crossed by the object is not perfect. The purpose of the invention is to improve the measurement accuracy. The goal is achieved by the fact that the device for measuring the area of flat objects, including the width sensor in the form of a line of EQ4 capacitive cells, is equipped with three for the displacement sensor, generator, impush, frequency divider, logic circuit, register, RS-trigger, switch and counter. subtractive units, a divider, a logic unit connected to a counter, a comparator, a reference voltage source connected to the first comparator, a pulse generator, a frequency divider, a logic circuit, a register, and a switch connected by Consequently, the pulse generator is connected to the axis of the displacement sensor to the width sensor, the outputs of which are connected to the inputs of the switch, the output of the displacement sensor is connected to the second output of the register and P-soda of the Rs-trigger, the S INPUT of which is connected to the output of the register, the first inputs the first and second subtract blocks are connected to the reference output of the width sensor, the second inputs of the subtracting blocks are connected to the switch outputs, and the outputs are connected; respectively, the first and second inputs of the divider and the third one read the dego block, the output of the last is connected to the third input of the divider, the output of which is connected to the first input of the logic unit, to the second input of which the comparator output is connected, the second and third inputs of the comparator are connected respectively to the first and second outputs switch. The drawing shows the block diagram of the device. The device consists of connected pulse generator 1, frequency 2, logic circuit 3, register 4 and switch 5, serially connected divider 6, logic block 7 and counter 8, reference voltage source 9 and comparator 10, movement sensor 11 in the form of capacitive cells formed by electrodes 12, 13 and shaper 14, sensor 15 width, consisting of 1 ... P measuring capacitive cells and reference capacitive cell (n, RS-trigger 16, first 17, second 18 and third 19 subtracting units. Device works after In the following way, when a measurement object is transported between the electrodes of a capacitive cell array at the output of shaper 14 of displacement adjuster 11, impulses appear, each pulse corresponding to linear displacement of the object by a given distance. circuit 3 and register 4 switch the switch 5, which pushes each of the capacitive cells of the width sensor 15, and in such a way that a signal appears from the first output, for example, from the first cell, and from the second output oh, or in the general case p-r1 - cells, and at the Second exit from the h-th cell. When polling the last capacitive cell, the Y5 thrigger 16 generates a signal to prohibit the passage of pulses through logic circuit 3 to the input of register 4. During further operation, the pulses arrive at the input of register 4 only after the next pulse from the driver 14 of the displacement setter 11. When polling sensor cells 15 wide, in which there is no object of measurement, from the first and second outputs of the switch

5 a minimum signal is received on the first and second cokshar agora 1O, the value of which does not exceed the level of the reference voltage from the source 9 of the reference voltage .5

The output signal from the output of the comparator 1O, equal to logical O, forms a prohibition for the passage of pulses from divider 6 to the input of counters 8. When interrogating the measuring cells l ... h 10 of the sensor 15, the width in which the object is located, and if the signal level is exceeded from n-lfix

voltage, at the output of the comparator 1O, logical 1 is formed and from the output 15 of the divider 6 through the logic block 7, the pulses go to the counter of the counter 8.. From the output of the subtracting unit 17, the voltage and, for example, the difference of the signals of the measuring cell n -1 and 20 of the reference cell m, and the output of the subtracting unit 18, the voltage U, the signal difference of the measuring cell and the reference cell GT, are fed to the inputs of the Divider 6 and the inputs 25 of the subtracting unit 19 "In the case where X is the high-voltage voltage of the subtractive unit 19, which is fed to the control input of the divider 6, the positive and divisor 6 do the same (divide division

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The output of the divider 6 is proportional to the result of the phenomenon, through block 7 of logic, “i counts 8 is received, and when it is divided, the output is equal to O, O1, the number of pulses is equal to 0). 1, i.e. imput

corresponds to nl "mvadv equal to where

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 polash odaayuyy kKvdatchika 15 width. The counter 8 is interlaced with the number of the pulses, is transmitted over the area of the object being changed, and it reads the measurement result on the digital indicator.

Thus, by taking into account the area of the partially overlapping width sensor cells, a measurement point is created.

The annual economic effect from: to the use of one device for measuring the area will be 1145 kil.

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Claims (1)

DEVICE FOR MEASURING AREA OF PLANE OBJECTS, containing a width sensor in the form of a line of capacitive cells, a displacement encoder, a pulse generator, a frequency divider, a logic circuit, a register, an RS-trigger, a switch and a counter, which is explained by the fact that To increase the measurement accuracy, it is equipped with three subtracting units, a divider, a logic unit connected to a counter, a comparator and a voltage reference connected to the first input of the comparator, a pulse generator, a frequency divider, a logic circuit, a register, and the switch is connected in series, the pulse generator is connected to the inputs of the displacement encoder and the width sensor, the outputs of which are connected to the information inputs of the switch, the output of the displacement encoder is connected to the second input of the register and the R-input of the RS-trigger, the S-input of which is connected to the output of the reset register, the first the inputs of the first and second subtracting blocks are connected to the reference output of the width sensor, the second inputs of the subtracting blocks are connected to the outputs of the switch, and the outputs are connected respectively to the first and. to the second inputs of the divider and the third subtracting unit, the output of the latter is connected to the third input of the divider, the output of which is connected to the first input of the logic unit, to the second input of which the output of the comparator is connected, the second and third inputs of the comparator are connected respectively to the first and second outputs; switchboard. > 1033870 1