SU745408A1 - Apparatus for agricultural machine operation control - Google Patents

Description

(54) DEVICE FOR CONTROL OF WORK OF AGRICULTURAL MACHINE

one

The invention relates to agricultural machinery and can be used to control the operation of agricultural machines.

Devices for monitoring the operation of the cutter are known, including monitoring sensors, an alarm unit and a multi-channel conversion circuit.

A disadvantage of the known device is the inefficiency of the signaling system with simultaneous disturbance of the seeding process in several sowing devices and the lack of information memory of the device 1.

The closest in technical essence is a device for monitoring the operation of seed metering machines, comprising control sensors whose outputs are connected to a multi-channel conversion circuit consisting of an OR element and control sensor signal amplifiers and connected to the alarm unit 2.

A device failure is also the lack of memory of failing control channels, which generally reduces the control efficiency, leads to informational overload of the operator and can cause prolonged downtime of the agricultural machine due to the time required to detect a malfunction.

The aim of the invention is to increase the efficiency of the control.

5 This is achieved by the fact that in a device for monitoring the operation of an agricultural machine, mainly a cutter, containing control sensors, the outputs of which are connected to a multichannel conversion circuit consisting of an OR element and signal amplifiers of sensors and connected. to the signaling unit, a multichannel conversion circuit is made with memory elements, a time delay circuit and a memory trigger element, with the outputs J of the sensor signal amplifiers being connected through the memory elements, the OR element and the time delay circuit to a memory trigger element whose output is connected to element (memory and alarm unit; in addition, the device has an additional block

20, connected to the outputs of the memory elements of the multi-channel conversion circuit.

The drawing shows the functional diagram of the device.

The device contains sensors of control 1 of a different principle of action, the choice of which depends on the monitored parameters of the agricultural machine and its design. Each sensor is installed at the monitoring point and responds, for example, to the flow of sown grains or the rotation of the shaft, or the movement of the working element. The outputs of the control sensors are connected to a multi-channel conversion circuit 2, in which signal amplifiers (integrators) 3 control sensors are connected to memory elements 4, the outputs of which are connected to the corresponding visual indicator 5 of the additional alarm unit bis inputs OR 7, the output of which is via an adjustable circuit 8 a time delay is connected to the input of the device 9 memory insertion element. The output of the memory-switching element 9 of the device is connected to the memory elements 4 with the visual indicator 10, and with the acoustic emitter 11 of the signaling unit 12. The signaling unit 12 is installed in the tractor cab, and the additional signaling unit b is directly on the split.

A device for controlling the operation of agricultural machines operates as follows.

During the normal course of the monitored process, for example, seeding, the electrical pulses generated at the output of the control sensors 1 installed in the agricultural machine control channels charge the storage capacitance of the amplifier 3. The capacity rating is chosen such that its discharge time is longer than the pulse frequency of the control sensors 1 Thus, each successive pulse recharges a cumulative capacity that does not have time to discharge and signals to the inputs of the memory elements are not received. Sound and light signaling are absent.

If a monitored process is disturbed in any control channels, after a period of time necessary to discharge the storage capacity of amplifier 3, signals are fed to the inputs of memory 4. The memory elements 4, made, for example, in the form of a trigger, take on this state opposite to the initial state and at their outputs appear signals including visual indicators 5 of the additional signaling unit corresponding to the monitored channels b. At the same time, signals from the outputs of the memory elements 4 are fed through the inputs of the OR 7 element corresponding to the monitored channels to the adjustable time delay circuit 8 whose output is connected to the memory activation element 9. The required values in the time delay chain 8 are set depending on, for example, the crop being planted and the seeding rate so that

element 9 was produced after a period of time sufficient to signal a steady-state rather than an accidental violation. From the output of the time delay circuit 8, the signal is fed to the input of the memory switching element 9, for example, in the form of an amplifier. At the same time, at the output of element 9, a signal appears that provides the memory elements 4 with a memory of the state they received at the moment of steady disturbance of the seeding process, and a turning on visual indicator 10 and the sound emitter 11 of the signaling unit 12. Short turn-on time the presence of a discharge circuit at its input.

The proposed device for controlling the operation of agricultural machinery, mainly for harvesting, provides for control during their work and memorizing the places of disturbance until the moment of their elimination, improves the working conditions of the machine operator, since he carries out sequential input of information in time. At first, the tractor driver perceives a signal about the presence of a disturbance, stops the machine and, on the spot, this agricultural machine recognizes a specific control channel in which a violation is observed, which facilitates troubleshooting and shortens the time of the machine and increases the efficiency of the control.

Claims (2)

1. A device for monitoring the operation of an agricultural machine, mainly a crop, containing control sensors whose outputs are connected to a multichannel a conversion circuit consisting of an OR element and sensor signal amplifiers and an alarm system connected to the unit, characterized in that, in order to increase the monitoring efficiency, the multichannel the conversion circuit is made with memory elements, a time delay circuit and a memory switch element, wherein the outputs of the sensor signal amplifiers are connected through the memory elements, the OR element and the time delay circuit to a memory switch element whose output is connected to the memory elements and a signaling unit . 2. The device according to claim 1, characterized in that it has an additional signaling unit connected to the outputs of the memory elements of the multi-channel conversion circuit. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 446249, cl. А 01 С 7/00, 1973. 2. USSR Copyright Certificate for Application No. 2155877, cl. A 01 C 7/00, 1975 (prototype).