JPS58219693A - Working machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a working machine such as an agricultural machine or a civil engineering construction machine, and more particularly to a working machine that issues an audio warning.

Recent advances in microcomputers and various sensors have enabled many self-control monitoring and maintenance functions to be added to work machines, and with the development of voice synthesis devices, it is now possible to output seed warnings in the form of voice. There is a tendency to force people to do things. Audio notifications have the advantage of making it easy to see where the abnormality is and the extent of the abnormality, but these work machines are used outdoors and are noisy due to engine noise and other mechanical sounds. There is a problem that it is easy to miss the audio warning and it is not possible to sufficiently arouse the driver's attention. In addition, in order to prevent overhearing, if the volume is turned up high, the sounds of auxiliary workers and others around the aircraft may be overlooked, which may lead to machine failure. There is.

The present invention was designed to eliminate such inconveniences, and allows the operator to listen to voice notifications using earphones (including Headphones 5i), and also allows the operator to listen to the voice notifications using earphones (including Headphones 5i). ) The purpose of the present invention is to provide a highly safe working machine that can be heard by removing the sound.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the entire combine harvester of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic side view of a combine harvester according to the present invention (hereinafter referred to as the present invention machine), in which an electronic device as described later is installed in an operation column 91 in front of a driver's seat 95, and headphones 37 are installed in an operation column 91 in front of a driver's seat 95. D "Removably connected to the specified terminal"
ing. A first microphone 38 is installed near the engine to capture the background noise of the machine of the present invention, and on the side of the top sucker 93, it is placed on a paddy holder to assist in replacing paddy bags, etc. A second microphone 39 that captures the voice of an auxiliary worker engaged in work together with bank background noise is provided toward the outside of the machine.

FIG. 2 is a block diagram showing the main parts of the electronic circuit of the machine of the present invention. In the figure] 0 is a microcomputer that performs various automatic controls, and is connected to the positive terminal of the battery 5 via a key switch 6.
) ll *Input/output interface 12. ROM(
The control program consists of a read-only memory (read-only memory) 13, a RAM (random access memory) 14, etc., and is also configured to function as a control section of the speech synthesis device.
ing.

Each input port a1 to a4 of the input/output interface 12
Various sensors and switches are connected to the unit. In this embodiment, a cutter sensor 1 is turned on when the straw removal cutter of the straw removal processing section 92 located at the rear of the machine is detected to be at a low level, and is set to the low level.
The input boat a2 has a paddy sensor 2 which turns on and sets the boat a2 to a low level when the amount of paddy in the top sucker 93 exceeds a predetermined amount. If a fuel sensor 3 using a thermistor with a positive characteristic is connected to the input boat A, and a sound is emitted from the input boat A, A voice stop switch 4 for manual operation is connected to give an instruction to stop the process.

A voice synthesis L8I31 is connected to the output port b1 of the input/output interface 12, and upon receiving a control signal from the CPU II, data in a ROM (read-only memory) 32 dedicated to the voice synthesizer that stores voice data is transferred. The analog audio signal is read out and output, and this signal is amplified by the amplifier 33 and output to the synthesis amplification circuit 36.

On the other hand, the output of the second microphone 39, which is attached to the glue 11 surface of the dog sucker 93 and captures the voice of the n1 auxiliary worker together with background noise, is amplified by the amplifier 33.
and is applied to the phase adjustment circuit 35.

The output of the first microphone 38, which is installed near the engine and captures background noise, is sent to the amplifier 34.
The signal is amplified and applied to the phase adjustment circuit 35.

The phase adjustment circuit 35 inputs the input from the amplifier 34 to the amplifier 3
The phase is shifted by 18o0 based on the input from 3. The output of the phase adjustment circuit 35 is sent to the synthesis amplifier circuit 3.
The signal is input to N6 and is synthesized and amplified to drive an N1 headphone 37.

When there is no audio input from the second microphone 39, the output of the amplifier 33 is a noise component around the aircraft, as shown in FIG. 3(a), and the output of the amplifier 34 from the first microphone 38 is also The result will be similar, but the phase adjustment circuit 35 will be modified and shifted by 80°, resulting in the result as shown in FIG. 3 (b).

Therefore, if the positions of the microphones 38 and 39 are matched, or the output levels of the amplifiers 33 and 34 are matched, the output of the amplifier 33 is canceled by the phase adjustment circuit 35, and its output is 0 or low. level, and the sound captured by both microphones 38 and 39 is not output to the headphones 37. Therefore, as shown in FIG.
When there is an output from the LE II 31, the output of the amplifier 33 is the sum of the input from the voice synthesis LSI 31 and the input from the microphone 39 (see Figure 3), but the output from the voice synthesis LSI 31 is It is not affected by the output of the amplifier 34 and is amplified by the synthesis amplification circuit 3'6.As a result, only the output of the voice synthesis LSI 31 is clearly emitted from the headphones 37.

In addition, when an auxiliary worker makes a sound to the microphone 39, this sound is unrelated to the input from the microphone 3, and is not canceled or compensated for by the output of the amplifier 34, so that the sound is not heard from the headphone 37. In this case, the background noise captured by the microphone 39 is removed by the background noise captured by the microphone 3, and the voice of the auxiliary worker is not emitted.

When one of the sensors detects an abnormality or the like and turns on, the microcomputer 10 issues a predetermined signal to the voice synthesis LSI 31 so as to cause the voice to issue an alarm message related to the sensor that has been turned on. The contents of messages 1 and 2.3 issued when each sensor 1 and 2.3 are turned on are as follows.

Message number Contents (sensor number) 1 Katsutagatsumarimashita (The cutter has reached 8 successes) 2 Top salariki Gaitsupaidesu (The dog sucker is full) 3 Neryouwo hokyuushi techudasai (
(Please replenish fuel) Message 1 (or 2, 3) will be emitted repeatedly until sensor 1 (or 2.3) is turned off or the voice stop switch number is turned on. In addition, if two or more sensors are on, the messages related to each sensor will be emitted alternately, but if any sensor is off, only the message related to that sensor will not be emitted. Also, when the voice stop switch 4 is turned on, the message that is not emitted when the switch is turned on will not be emitted until it is reset.

The operation of the machine of the present invention, which is constructed as described above and has a length of 7", is as follows. When the driver starts work, he puts on the headphones 37, and then turns on the key switch 6. .

2. The situations in 3 are sequentially monitored, and if any n sensor is turned on, a message related to that sensor is not emitted on the scene. On the other hand, micro yp: y 38 td
The microphone 39 is installed near the engine to capture background noise, and the microphone 39 captures the voices of auxiliary workers who are engaged in refilling paddy bags, etc. together with the background noise.

The microcomputer 10 has a sensor 1 (also tri2
゜3) is turned on and input port a1 (or a2. a3
) becomes a low level, it issues a predetermined signal to the speech synthesis LSI 31, and the speech synthesis LSI 311'i outputs a predetermined message 1 (or 2.3) to the amplifier 33. Background noise captured by a microphone 39 is amplified by an amplifier 33 and input to the phase adjustment circuit 35 .
The background noise captured at 8 is input fL
, the background noises are synthesized and amplified in a synthesis amplification circuit 36 so that the phases of both background noises differ by 180 degrees l6. Therefore, the background noise captured by the microphone 38 and the background noise captured by the microphone 39 are canceled out, and the background noise is removed and compensated from the headphones 37. Or 2.3) sounds are often heard.

On the other hand, when an auxiliary worker or the like senses danger or the like and utters a voice to call for attention, the microphone 39 of 1 captures the voice. However, the microphone 39 captures not only the voice of the auxiliary worker but also background noise, which is amplified by the amplifier 33 and then transferred to the phase adjustment circuit 3.
As mentioned above, the phase adjustment circuit 35 is output to the microphone 38 and amplified by the amplifier 34.
i'' background noise is input, and the phase adjustment circuit 35 adjusts the input from the amplifier 34 and the input from the amplifier 33 by t cycles so that the xsog phase differs, and outputs it to the synthesis amplifier circuit 36. However, since the synthesis amplification circuit 36 amplifies the voice of the assistant worker, the output of the synthesis amplification circuit 36 is compensated for by removing background noise from the voice situation captured by the microphone 39. Only the worker's voice will be heard, and the auxiliary worker's voice will not be clearly emitted from the three headphones.

Although the microphone 39 is designed to capture the voice of the auxiliary worker, it is not limited to this configuration.The microphone 39 may be installed at multiple locations where an abnormality may occur to capture abnormal sounds. As described above, the present invention is based on the operation of predetermined parts.

a state monitoring means, a speech synthesis output, a first microphone for capturing background noise, a second microphone for capturing a specific sound, an earphone for converting the output of the speech synthesis output into speech, and the monitoring. The device includes means for outputting a predetermined message by voice synthesis based on the results of monitoring the operation and status of the means, and a circuit for removing and compensating the first microphone input from the second microphone input.
This makes it possible to hear the signals from the earphones, so that the voice of the auxiliary worker, abnormal noises from the aircraft, etc. are reliably transmitted to the driver, and the driver is able to listen to dangerous sounds around the aircraft. Condition 1: Abnormalities in the aircraft can be detected easily and reliably without discomfort, resulting in safety.

A work machine with excellent reliability can be realized.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic side view of the machine of the present invention, FIG. 2 is a block diagram of its main parts, and FIG.
Figures (a) to 3) are waveforms for explaining the operation. 1...Cutter sensor 2...Paddy sensor 3...Fuel sensor lO
...Microcomputer 31...Speech synthesis LS
: [33, 34...Amplifier 35...Phase adjustment circuit
36... Preparative amplification circuit 37... Headphones 38.
39...Microphone patent applicant Yanmar Agricultural Machinery Co., Ltd. Agent Bendoshi Noboru Kono

Claims (1)

[Claims] 1. A means for monitoring the operation and status of a predetermined part, a speech synthesis device, a first microphone for capturing background noise, a second microphone for capturing a specific sound, and a voice synthesis device for outputting the output of the speech synthesis device. a means for outputting a predetermined message by voice synthesis based on the result of monitoring the operation and status of the earphone to be converted; and second. and a circuit for removing and compensating the first microphone input from the microphone input of the first microphone, so that the compensated signal f'L(g) can be heard through the earphone.