JPS592B2 - Crop row condition detection device for mobile agricultural machinery - Google Patents

Description

[Detailed Description of the Invention] The present invention provides the following features when moving a mobile agricultural machine along a row of crops such as planted culms and already planted seedlings: - To detect the amount of lateral displacement of the machine relative to the row of crops Regarding the crop row state detection device used in the mobile agricultural machine, the purpose is to prevent the crop row state detecting component from accidentally injuring the crops or interfering with the movement of the crops. Column.

The object of the present invention is to detect the state reliably and accurately in a non-contact manner, and to perform good aircraft orientation operation or automatic control. First, embodiments of the present invention will be described based on the drawings.

Figure 1 shows the front part of the machine body 1 on which the threshing device 5 is mounted.
While gradually changing the posture of the pulling device 6, the parigan-type reaping device 1, and the culm that was cut in an almost upright position to a sideways posture,
A reaping section 1■ consisting of a vertical conveyance device 9 and the like for conveying and supplying the threshing to the threshing feed chain 8 of the threshing device 5 is disposed, and the machine body 1 includes a mission case having a pair of left and right crawler type traveling devices 11, 11. 12 is shown, and the crop row condition detecting device of the present invention installed therein is constructed as shown in FIG.

That is, a projector 2 that emits a light beam in a direction transverse to the moving direction of the mobile device 1 is provided on the side of the uncut land side of the mobile device 1, and the light beam a emitted from the projector 2 is emitted at different points in the optical axis direction. The Ξ light receivers 3A, 3B, and 3C each capture the reflected light from the planted shell culm, and capture the reflected light from the planted shell culm located within the farthest beam range Al with respect to the mobile aircraft 1. The light receiver 3A that captures the reflected light from the planted shell culm located within the light beam range A2 closest to the mobile aircraft 1 is placed in front of the aircraft body than the light emitter 2, and The light receiver 3C that captures the reflected light from the planted culm located in the light beam range As between Al and A2 is disposed at the rear of the aircraft body than the light emitter 2, and the light receivers 3A, 3B, and 3C The result of light reception by When the light receiver 3A) located at the front or the light receiver 3B adjacent thereto captures the reflected light, the aircraft is steered toward unmoved land or mowed land, and the light receiver 3C located at the rear of the aircraft When it captures the reflected light, the aircraft is configured to continue straight ahead. In the above-mentioned embodiment, the present invention was applied to a combine harvester, but it may also be applied to mobile agricultural machinery such as a rice transplanter binder.

In summary, the crop row state detection device for a mobile agricultural machine according to the present invention includes a mobile machine body 1 provided with a light beam 2 that emits a beam of light in a direction transverse to the direction of movement of the machine body 1, and a light beam a emitted from this floodlight 2. A plurality of light receivers 3A and 3B are provided to capture reflected light from the target crop at different points in the optical axis direction, and the light reception results by the light receivers 3A and 3B are sent to a desired mechanism 4 for aircraft direction. Since it is characterized in that it is configured to transmit light, which of the plurality of light receivers 3A and 3B captures the reflected light from the object to be detected of the light beam emitted in the horizontal direction from the light projector 2. By doing so, it is possible to reliably and accurately detect the amount of displacement of the machine body 1 in the lateral direction with respect to the crop row, and these light receivers 3
A desired mechanism 4 for rock shore orientation operated based on the light reception results of A and 3B, such as an automatic steering mechanism or a steering display mechanism of the aircraft, allows the aircraft 1 to follow the crop rows well. I can do it.

Therefore, as described above, the light projector 2 and the plurality of light receivers 3A
, 3B are arranged in a rational manner, the component for detecting the crop row state can be prevented from protruding to the side of the machine body, thereby preventing unexpected damage to the crops due to the protruding member, or
There is no need to worry about running obstacles, and the fact that crop row state detection is non-contact makes it possible to perform good machine orientation and control.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the crop row state detection device for a mobile agricultural machine according to the present invention, with FIG. 1 being an overall side view of a combine harvester, and FIG. 2 being a schematic plan view. 1... Mobile aircraft, 2... Floodlight, 3A
, 3B... Light receiver, 4... Desired mechanism.

Claims (1)

[Scope of Claims] 1. The mobile body 1 is provided with a light projector 2 that emits a beam of light in a direction transverse to its traveling direction, and the light beam a emitted from the light projector 2 detects the detected crop at different locations in the optical axis direction. a plurality of light receivers 3A each capturing reflected light from the
3B, and is configured to transmit the light reception results by the light receivers 3A and 3B to a desired mechanism 4 for machine direction. 2. The crop row state detection device in a mobile agricultural machine according to claim 1, wherein the desired mechanism 4 is an automatic steering mechanism of the machine body.