SU697076A1 - Arrangement for checking seeding accuracy - Google Patents

Description

one

This invention relates to the field of agriculture. household engineering, in particular, to devices for controlling seed seeds when testing seedlings.

A device for controlling the seeding accuracy is known, which contains an artificial surface in the form of a piezoelectric transducer block, which converts mechanical impulses of falling seeds onto it into electric signals, which through the time delay unit, the driver and the time interval qualifier between pulses arrive at the recorder 1.

The disadvantage of this device is the large error caused by repeated collisions of the same seed through the piezoelectric sensors, as well as hit of one seed at the junction of two adjacent piezoelectric sensors.

It is also known a device for monitoring the accuracy of seeding, which contains a microphone shock sensor, an amplifier, a key, a reference oscillator, a recorder and a counting unit that includes a series-connected logical element And, a counter and a decoder (2.

The operation of the device is based on the measurement of the time between two adjacent HMnynbcaSw, appearing at the output of the microphone sensor when you drop seeds on it. The signal after amplification includes a key that ensures the passage of pulses from the reference generator to the counting unit. The number of pulses recorded in the counter is proportional to the time between the sensor signals. This is read out and through a decoder enters a recorder, for example a perforator.

A disadvantage of this device is the large control error at small intervals between the sown seeds, i.e. the device does not distinguish such seeds and registers them as one. This error of the device due to the need for time spent on reading the information and resetting the readings of the dog meter.

The purpose of the invention is to increase the resolution of the device.

The goal is achieved by the fact that the device is equipped with a second counting unit, connected in parallel with the first, an OR element and a counting trigger, the input of which is connected to the output of the amplifier. The trigger outputs are connected to the second inputs of the AND elements of the first and second counting unit, respectively, and with the input inputs of the information of the decoders of each other counting unit. Vyosody elements And are connected to the reset inputs of the counter of the opposite counting unit. The inputs of the element OR are connected to the outputs of the decoder, and the output is connected to the recorder.

Summary of the Invention: as illustrated in the drawing, which shows a block diagram of a device.

The device contains a shock sensor 1, for example, a microphone sensor, the output of which is connected through the amplifier 2 to the input of the counting fig. 3. The device contains two counting units: blocks 4 and 5, the first counting unit consists of the Jt 6 jumper element, counter 7 and desfragrator 8. The unit is sosit from ale} gga I 9, counter 10 and decoder P. Forward output Q trigger 3 connect with input 6 and read input V of information decoder 11. Inverse output Q trigger 3 connect) with element input 9 and with input V with the imformation of the decoder 8. To the second entrance I will give logic elements I 6 and 9 connected to the reference generator 12. The output of the element I 6 is connected to the counting input of T 7 and to the reset input R of the bank 10. Analogues of the output of the element I 9 are connected, with the input T of the counter 10 and with the input R counter 7. Biiixo counters 7 and W connection {Shen respectively with the inputs of the decoders 8 and I. The outputs of the decoders 8 and 11 are connected to the inputs of the logical element OR 13, the output of which is connected to the recorder 14.

The work is carried out as follows. When a seed falls on a microfix sensor, an emulsion is produced, which, after the incantation of amplifier 2, enters input T (; four trigger 3.) Trigger 3 switches to the opposite position of the original one.

For example, at the output of O. by. is 1, and H9 output Q is O. The signal 1 Guste is fed to the input V of the decoder P of the counting unit 5, causing reading of the information about the previous interval from the counter W to the recorder 14. The same signal 1 is simultaneously fed to the input of the AND 6 element. providing 1flux pulses from the reference generator 12 to the counting input T of the cell 7. The first of these pulses, arriving at the input R of the counter 10, resets the counter 10 of the counting unit 7.

A fall on sensor 1 of the next seed causes the appearance of a pulse at its output, which, passing through amplifier 2 to trigger 3, will switch it. In this case, the output

Q flip-flop 3, a signal O appears, which detects the arrival of pulses through element 6 at the input T of counter 7. Thus, measurement of the time interval between seeds is triggered. Signal 1, ascending

(The output of Q flip-flop 3, post goes to the input V of the decoder 8, due to the-what the decoder 8 reads information from counter 7 to the recorder 14 through the element OR 13. The same signal 1 from the output Q of the flip-flop 8 comes

the input element And 9, ensuring the flow of pulses from the reference generator 12 to the input T of the counter 10. The first of these pulses through the input R of the counter 7 resets it to O, preparing it for the next cycle of measuring the interval. Further, the STIs are repeated as described.

The use of the invention significantly increases the accuracy of the control of seeding with crops and reduces the time required to study the uniformity of seeding with seed.

Claims (2)

Invention Formula A device for controlling seeding accuracy, including a shock sensor, an amplifier, an electronic generator, a recorder and a counting unit, containing in series the logical AND gate, a counter and a decoder, characterized in that, in order to increase the resolution, it is equipped with a second counting block, which connected in parallel with the first, the OR element and the counting trigger, whose input is connected to the amplifier output, and the outputs to the second inputs of the AND elements of the first and second counting unit, respectively, and to the read inputs the information of the decoders of each other countable block, while  the outputs of the AND elements are connected to the reset inputs of the countercount of the opposite counting unit, the inputs of the OR element 1SH1 with the outputs of the decoder, and the output from by the registrar. 0 Sources of information, taken into account in the examination 1. Copyright svdedelstvo USSR N 202607, cl. A 01 C 7/00, 1966.  2. Electronic equipment for controlling the adaptability of beet seed to precision seed. - Sementi elette, 1976, vol. 22, p. 63-67- (prototype).