Apparatus for online volumetrically detecting grain yield based on weight calibration

Patent metadata

Field	Value
Publication number	US-11709092-B2
Application number	US-202016998555-A
Country	US
Kind code	B2
Filing date	Aug 20, 2020
Priority date	Aug 28, 2019
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

The disclosure discloses an apparatus for online volumetrically detecting grain yield based on weight calibration comprising left volumetric granary, right volumetric granary and push board. The left volumetric granary is provided on its bottom with first weighing sensor, and in its side with unload grain port opening and first closing door, the right volumetric granary is provided on its bottom with second weighing sensor, and in its side with unload grain port opening and second closing door, the left volumetric granary and the right volumetric granary are provided on their tops with the push board, the push board is a hollow box structure with a top side and a bottom side both opened, and is slidably mounted to a top of the left volumetric granary and the right volumetric granary through a slide driving mechanism.

First claim

What is claimed is:

1. An apparatus for online volumetrically detecting grain yield based on weight calibration, comprising:
a left volumetric granary, a right volumetric granary and a push board, wherein the left volumetric granary is provided on its bottom with a first weighing sensor, and in its one side with a first unload port switching door, the right volumetric granary is provided on its bottom with a second weighing sensor, and in its one side with a second unload port switching door, the push board is arranged on tops of the left volumetric granary and the right volumetric granary, the push board is a hollow box structure with a top side and a bottom side both opened, and is slidably mounted to the tops of the left volumetric granary and the right volumetric granary through a slide driving mechanism.

2. An apparatus for online volumetrically detecting grain yield based on weight calibration according to claim 1 , wherein the first weighing sensor and the second weighing sensor are connected with a control circuit module via signal wires, detected data from the first weighing sensor and the second weighing sensor are transmitted in a wireless communication by the control circuit module to a graphic display device for online displaying a yield of a harvest and generating a yield graph.

3. An apparatus for online volumetrically detecting grain yield based on weight calibration according to claim 1 , wherein the slide driving mechanism operates under a control of the control circuit module, and comprises sliding rods and sliding blocks which are arranged on two sides of the push board, a motor used for driving, a gear and a rack, the sliding blocks are fixed on two sides of the push board and are sleeved on the sliding rods, the motor is fixedly mounted on the push board, and the gear is mounted on a drive shaft of the motor, a forward and backward rotation of the motor is controlled by the control circuit module, the gear is engaged with the rack, two ends of the rack are fixed above two volumetric granaries.

4. An apparatus for online volumetrically detecting grain yield based on weight and calibration according to claim 1 , wherein the first unload port switching door and the second unload port switching door are opened or closed though power-on or power-off of electromagnets under a control of the control circuit module.

5. An apparatus for online volumetrically detecting grain yield based on weight calibration according to claim 4 , wherein the left volumetric granary is provided with on its bottom a first electromagnet, the right volumetric granary is provided on its bottom with a second electromagnet, and the first unload port switching door and the second unload port switching door are provided respectively with a first steel bar and a second steel bar in cooperation with the respective first electromagnet and the second electromagnet.

6. An apparatus for online volumetrically detecting grain yield based on weight calibration according to claim 2 , wherein the control circuit module comprises a micro control unit, an electromagnet driving module, a motor control module, a volumetric granary state detection module and a wireless communication module.

7. An apparatus for online volumetrically detecting grain yield based on weight calibration according to claim 6 , wherein AD chips HX711 are employed in the first weighing sensor and the second weighing sensor to communicate with a master control chip in the micro control unit via serial ports; the electromagnet driving module is set up by employing a high-power MOS transistor which is controlled to be on or off by a high or low level of an IO port, so as to control an attraction of the electromagnets; the motor control module employs PWM wave to control driving of the motor to regulate a speed of the motor, and controls the forward and backward rotation of the motor through setting the IO port; the volumetric granary state detection module is realized by employing a capacitive proximity sensor which is mounted in the push board and outputs a voltage when the volumetric granary is full; the wireless communication module is realized by employing NRF24L01 to transmit yield data to an embedded graphic display device and receive command signals from the graphic display device.

8. An apparatus for online volumetrically detecting grain yield based on weight calibration according to claim 2 , wherein the graphic display device comprises: a display screen, employing an HDMI interface to communicate with the embedded graphic display device to display a map, a current geographic position of a harvester and the yield data; and a wireless communication module, implemented by employing NRF24L01 to receive the yield data transmitted by the control circuit module and send commands to the control circuit module; and a GPS module, installed at a top of the harvester and sending a current geographic position of the harvester to the embedded graphic display device.

9. An apparatus for online volumetrically detecting grain yield based on weight calibration according to claim 1 , wherein the left volumetric granary and the right volumetric granary are respectively provided on their respective bottom with a first separator and a second separator which are inclined, and lower ends of the first separator and the second separator are located at the respective unload port.

10. An apparatus for online volumetrically detecting grain yield based on weight calibration according to claim 3 , wherein the control circuit module comprises a micro control unit, an electromagnet driving module, a motor control module, a volumetric granary state detection module and a wireless communication module.

11. An apparatus for online volumetrically detecting grain yield based on weight calibration according to claim 4 , wherein the control circuit module comprises a micro control unit, an electromagnet driving module, a motor control module, a volumetric granary state detection module and a wireless communication module.

12. A method for online volumetrically detecting grain yield based on weight calibration, the method comprising: in a case of harvesting by a harvester, when the volumetric granary is fully filled at first, the harvester stops and a mass m1 of grains which are accommodatable in a single volumetric granary is calibrated by the weighing sensor; after the calibration is finished, the harvester continues to work and can stop several times to calibrate the mass to obtain m 2 , m 3 , . . . , m i during the harvesting process, and a total times n of fully filling the volumetric granary during the whole harvesting process is counted to finally obtain a total mass

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Assignees

• Univ Nanjing Agricultural

Inventors

• Ni Jun
• Yang Jinbo
• Zhu Yan
• Cao Weixing
• Jiang Xiaoping
• Tian Yongchao

Classifications

• G01G23/01 Primary

  Testing or calibrating of weighing apparatus · CPC title

• A01D41/127

  Control or measuring arrangements specially adapted for combines · CPC title

• G01F23/265

  for discrete levels · CPC title

• G01G19/086

  wherein the vehicle mass is dynamically estimated · CPC title

• G01G19/12

  having electrical weight-sensitive devices · CPC title