RU218119U1 - Stand for testing seeding units of precision seeders - Google Patents

Abstract

The utility model relates to methods and means for assessing the quality indicators of the technological process by sowing machines of seeders, in particular, for assessing the uneven longitudinal displacement of seeds along the bottom of the furrow.

The stand for testing seeding machines of precision seeding machines includes a seed hopper, a vacuum chamber configured to install the seeding disc of the seeding machine, an electric drive configured to rotate the seeding disc, a capacitive sensor installed at the output of the seeding disc, a seed tray. The stand for testing seeding machines of precision seeding machines is equipped with a high-speed digital video camera, an adjustable bracket, a scale ruler, a controller for controlling the operating modes of the seeding machine disc electric drive, which receives signals from a capacitive sensor and data from a video camera. The proposed stand allows you to evaluate the unevenness of sowing seeds, while it becomes possible to evaluate the unevenness of the longitudinal displacement along the bottom of the furrow, which gives a more objective assessment of the quality of sowing of the sowing machine than an assessment based on only the time between spans of seeds. 1 ill.

Description

The utility model relates to methods and means for assessing the quality indicators of the technological process by sowing machines of seeders, in particular, for assessing the uneven sowing of seeds.

Known stand for testing seeding machines precision seeding (AS USSR No. 327390 from 01/15/1970), containing the investigated seeding machine, the receiving conveyor in the form of adhesive tape and drive. The disadvantage of this stand for testing the sowing machines of seeders is the high complexity of testing and counting seeds, fixing their number and relative position on an adhesive tape.

Known stand for testing seeding machines (RF Patent for utility model No. 49674 dated 06/28/2005), containing concrete and sand annular paths, a rotating frame with a center of rotation in the center of the circle of tracks, fixed on it the investigated seeding machine, a drive, a digital camera with control from the microcontroller unit and the control system. The disadvantage of this stand is its bulkiness and significant amounts of preparatory work during testing.

A well-known stand for monitoring the operation of sowing machines of seeders (RF Patent for utility model No. 60300 dated 07/11/2006), including a sowing machine, a drive mechanism, a means of controlling the operating mode and a mechanism for fixing the seeded material, consisting of a quartz sensor and a pneumatic device for removing seeds from the sensor area after the first impact on the receiving surface.

The disadvantage of this stand is the low sensitivity of the contact type sensor.

A stand is known for testing sowing machines for single-grain sowing (RF Patent for utility model No. 203635 dated 10/12/2020), including a power plant, a set of sensors, a receiving device for sown seeds made in the form of a piezoelectric sensor with a signal amplifier and a mechanical recorder. The disadvantage of this stand is the low sensitivity of the piezoelectric sensor and the complexity of processing the results recorded by a mechanical recorder.

Known stand for testing seeding machines precision seeders (RF Patent for utility model 201770 dated 06/22/2020), including the studied seeding machine with a seeding disc and a coulter, a drive, a system for monitoring and fixing the seeded material containing two capacitive sensors and a cellular tray without a bottom , each cell of which is equipped with a counter of seeds falling into it.

The disadvantage of this stand is the inability to obtain data on the uniformity of the longitudinal displacement of seeds directly along the bottom of the furrow.

The problem solved by the proposed utility model is to develop a device that allows you to evaluate the quality indicators of the technological process by sowing machines of seeders, in particular, to evaluate the uniformity of the longitudinal displacement of seeds along the bottom of the furrow.

The technical result is achieved by the fact that the stand for testing seeding machines of precision seeding machines, including a seed bin, a vacuum chamber configured to install a seeding disc of the seeding machine, an electric drive configured to rotate the seeding disc, a capacitive sensor installed at the outlet with sowing disc, seed tray, according to the utility model, the stand for testing the sowing machines of precision seeders is equipped with a high-speed digital video camera, an adjustable bracket, a scale bar, a controller to control the operating modes of the sowing machine disc electric drive, receiving signals from a capacitive sensor and data from a video camera .

The essence of the utility model is illustrated by a figure, which shows a diagram of a stand for testing seeding machines of precision seeding seeders.

The test stand consists of a seeding unit under investigation with a seed hopper 1, a seeding disc. The seeding disc 2 is installed in the vacuum chamber 3. The rotation of the seeding disc 2 is carried out by an electric drive 4. The stand is equipped with a controller 5, which processes the signals received from the capacitive seeding sensor 6 and saves the information received from the high-speed digital video camera 7, and which controls the operating modes of the electric drive 4 A scale bar 8 is installed below the sowing unit on an adjustable bracket 9. A tray 10 is installed to collect seeds.

The stand works as follows. Using the controller 5 set the desired mode of operation of the sowing disk 2, the vacuum chamber 3 is connected to an external vacuum source. The capacitive seeding sensor 6 is installed at the outlet from the seeding disc 2 and connected to the controller 5. The scale bar 8 is installed using an adjustable bracket 9 in such a way that its upper edge is at a distance from the outlet of the seeding machine equal to the height of the coulter designed to work with the tested sowing machine, which corresponds to the bottom of the furrow during sowing. A high-speed digital video camera 7 is installed at the same level with the scale bar 8 and connected to the controller 5. During the test, the seeds from the hopper 1 are ejected from the seeding disc by the seed disc 2. Falling seeds fly through the sensitive zone of the seeding sensor 6, are recorded by the camera 7 against the background of the scale bar 8 and fall into the 9 seed collection pan. The signals generated during the flight of seeds through the sensitive area of the sensor 6 and the data from the high-speed digital video camera 7 are processed by the controller 5 and stored in its read-only memory (ROM). At the end of the testing of the sowing machine, the data from the ROM of the controller 5 are transferred to a computer for their subsequent processing in order to assess the uneven sowing of seeds and the uneven longitudinal displacement along the bottom of the furrow.

Thus, the proposed stand allows you to evaluate the unevenness of sowing seeds, while it becomes possible to evaluate the unevenness of the longitudinal displacement along the bottom of the furrow, which gives a more objective assessment of the quality of sowing the sowing machine than an assessment based only on the time between spans of seeds.

Claims (1)

Stand for testing the sowing machines of precision seeding machines, including a seed hopper, a vacuum chamber made with the possibility of installing a sowing disc of the sowing machine into it, an electric drive made with the possibility of rotating the sowing disc, a capacitive sensor installed at the exit from the sowing disc, a seed tray , characterized in that the bench for testing seeding machines of precision seeders is equipped with a high-speed digital video camera, an adjustable bracket, a scale ruler, a controller for controlling the modes of operation of the seeding disc electric drive, receiving signals from a capacitive sensor and data from a video camera.

Images