SU745435A1 - Apparatus for monitoring agricultural machine operation - Google Patents

Description

(54) DEVICE FOR CONTROL OF WORK OF AGRICULTURAL MACHINES

The invention is related (L1ts to agricultural machine building and also used to control the work of agricultural machines intended for sowing seeds of various crops and root crops, to control the work of harvesting units and machines that introduce seed seeds and fertilizers into the soil.

A device is known for monitoring the operation of plowed crops, which includes control sensors, a conversion circuit and a signaling unit containing a matrix, a key, an interrupter, a sound generator and a sound emitter 1. If one or more monitored processes are disturbed, a known sound signal is turned on in a known device.

A disadvantage of the known device is that the nature of the audio signal does not change depending on how the process is disturbed. The action of a constant sound signal in the event of the event tires the tractor driver and dulls his attention. At the same time, the tractor operator from his workplace cannot, by means of a sound signal, determine which technological process was violated, and quickly find the location of the malfunction.

The purpose of the invention is to increase the efficiency of the control device.

This is achieved by the fact that in a device that includes a control sensor, a rotation sensor, a level sensor, a conversion circuit and an alarm node containing a matrix, a key, an interrupter, a sound generator and a sound emitter, the alarm node is provided with an additional key, a time delay element and two elements OR, and the control input of the key of the signaling node is connected to the control input of the additional key and to the output of the time delay element, the input of which is connected to the output of one of the OR elements, one input of which connected to the output of the sound generator, and the second to the output of the rotation sensor, while the outputs of the sensors of rotation and level are connected to the respective inputs of the second OR element, the output of which is connected via an interrupter to the input of the sound generator.

The drawing shows a functional diagram of the device.

The device includes sensors of control 1 of a different principle of action, which are connected to matrix 3 through the conversion circuit 2, as well as sensors of control, rotation 4 and level 5. The output of matrix 3 is through key 6 and sound generator 7 is connected to sound emitter 8 and to one of the inputs element OR 9, the output of which is connected via time delay element 10 to control input of power button 6 and to the input of additional switch 11. Control input of key 11 is connected to input of element OR 12 and simultaneously with input of element OR 9. Second input of element OR 12 soybeans Inonii yield level sensor 5 and the output of chopper 13 through noiiaH on audio input 7 of the generator.

The device works as follows.

In the normal process, there is no signal at the control sensors 1. Key 6 is open to receive a signal from matrix 3, but due to the lack of a signal from sensors 1 at the output of matrix 3, there is no signal and no audible alarm.

If a process breaks down in one of the monitored channels, the signal from the control sensor 1 causes a signal at the output of matrix 3, the key b passes the signal and / starts the sound generator 7 and the sound emitter 8. From the output of the sound generator 7, the signal simultaneously passes through the OR element 9 on item 10 time delay. In this case, its capacity begins to charge. As soon as the capacitance of the element 10 is charged, a signal appears at its output controlling the switch 6, and closes it for passing the signal from the matrix 3. The audible alarm is turned off. The capacitance of the element 10 time delay begins to slowly discharge, since the key 11 for quickly discharging the capacity is closed by the presence of a signal from the matrix 3 at the control input of the key 11. After the discharge process is over, the signal at the control input of the key 6 disappears. The key b is reopened to pass the signal from matrix 3 and starts through the sound generator 7 an emitter of sound 8. This continues until the controlled process is restored and the signal on sensor 1 disappears. -or process control channel. At the same time, the nominal values of the element 10 of the time delay are selected so that the period of pause 1 is much longer than the period of sound signaling, which does not tire the driver and does not dim his attention.

In order to focus the attention of the tractor driver on the most / important controlled processes that determine the conditions for completing the remaining technological processes.

The sensors, their monitoring sensors are not connected via a conversion circuit to the matrix, and, mine, are connected to the sound emitter via the row element (). The presence of rotation of the shaft of sowing machines and the level of grain in the bunkers of agricultural machines may be the main indicators of reliable work of agricultural machinery.

In the presence of rotation and the required level of grain, the signals from the rotation sensors 4 and level 5 do not arrive at the element

0 OR 12 and no audible alarm. If one of these processes fails and the signal from sensors 1 at the output of matrix 3 is missing, the signal, for example, from rotation sensor 4, through element OR 12 goes to interrupter 13. At the same time, the capacity of interrupter 13 is charged and passes the signal to the input of sound generator 7, which triggers briefly emitter sound 8. At the same time, the signal from the output of the rotation sensor 4 is supplied through the element

0 OR 9 and the element 10 of the time delay for the control input of the key 6, putting it in the position closed for receiving the signal from the matrix 3. The constant presence of the signal at the control input of the key b when the rotation process is disturbed turns off the audible alarm until until the rotation is restored. Such a decision of the signaling unit allows turning off the sound when the sowing unit turns at the end of the rut and at its transport m. It will help when the absence of the sowing process and rotation of the shafts of the sowing apparatus is with a normal rather than emergency condition. It also improves the operating conditions of the operator, since it removes the impact of sound signals on him in this case. By reducing

The 5 grain level is below the permissible signal from the output of the sensor 5 through the element OR 12, the interrupter 13 and the sound generator 7 also briefly starts the sound emitter 8. From the output of the sound generator 7, the signal goes through the OR element 9 to the input of the U element of the time delay. At the same time, the capacitance of the element 10 begins to charge. At the end of the charging process at the output of the time delay element 10, the signal appears and its capacity is instantaneously discharged through the switch 11, which is open for discharging it. This allows the key b to be quickly prepared again for receiving the signal from the sensors 1.

Short-term sound switching on when the grain level falls below the allowable level warns the operator about the need to refill the bunkers with grain at the end of the rut.

The use of the device makes it possible to increase the efficiency of the control system, since, by the nature of the sound signal, the mechanic at his workplace can quickly determine in which group of controlled processes a violation occurred.

Claims (1)

Claim The apparatus for control of agricultural machines, comprising a sen- 1® snips control rotation sensor, level sensor, and signal conversion circuit assembly comprising a matrix switch, breaker, a sound generator and a sound transmitter, characterized in that, for the purpose An increase _and the efficiency of the monitoring device, the alarm unit is equipped with an additional key, a time delay element and two OR elements, the control input of the key of the alarm unit is connected to the control input of the additional key and to the output of the nta time delay, the input of which is connected to the output of one of the OR elements, one input of which is connected to the output of the sound generator, and the second to the output of the rotation sensor, while the outputs of the rotation sensors and level are connected to the corresponding inputs of the second OR element, output. which through a chopper is connected to the input of the sound generator.