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Detection device and measurement method for grain flow of combined harvesters

A combine harvester, grain flow technology, applied in the direction of harvesters, agricultural machinery and implements, cutters, etc., can solve the problems of being easily disturbed by vibration and low measurement accuracy, and achieve simple signal processing methods, high sensitivity, and suppression The effect of vibration disturbance

Inactive Publication Date: 2017-06-20
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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Problems solved by technology

However, the impulse flow sensor also has disadvantages: it is easily disturbed by vibration and the measurement accuracy is not high

Method used

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  • Detection device and measurement method for grain flow of combined harvesters
  • Detection device and measurement method for grain flow of combined harvesters
  • Detection device and measurement method for grain flow of combined harvesters

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] figure 1 It is a schematic diagram of the installation of the grain flow detection device. The schematic diagram includes: grain tank top 1, grain 2, lifter 3, bolt 4, grain flow detection device 5. figure 2 It is a schematic diagram of the structure of the grain flow detection device. The grain flow detection device specifically includes: a PVDF piezoelectric film 6 , a receiving plate 7 , an adjusting frame 8 , a fixing frame 9 , a charge amplifier 10 , an acquisition module 11 , and a shielding wire 12 . The grain flow detection device 5 is installed on the top of the grain tank 1 through the adjusting frame 8, the fixing frame 9 and the bolt 4, near the exit of the harvester elevator 3, and the grain 2 is thrown out and impacts the PVDF piezoelectric film 6, and the PVDF pressure Electric thin film 6 charges. The charge amplifi...

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Abstract

The invention belongs to the field of detection technologies for field yields of combined harvesters, and particularly relates to a detection device and a measurement method for grain flow of combined harvesters. The detection device can be mounted an outlet of an elevator of a harvester and is mainly used for detecting the grain flow of the harvester in real time during field operation. The detection device mainly comprises a PVDF (polyvinylidene fluoride) piezoelectric film, a carrying plate, an adjusting frame, a fixing frame, an electric charge amplifier and an acquisition module. Electric charge can be generated by two poles of the PVDF piezoelectric film when the PVDF piezoelectric film is impacted by grain, and can be amplified by the electric charger amplifier, and standard voltages can be outputted. The voltages outputted by the electric charge amplifier can be acquired by the acquisition module in real time and can be converted and processed to obtain grain flow values, and results can be outputted in digital communication modes. The detection device and the measurement method have the advantages that the detection device and the measurement method are high in measurement precision and anti-interference capacity, and the grain flow can be detected in real time.

Description

technical field [0001] The invention belongs to the technical field of combine harvester field output detection, and in particular relates to a combine harvester grain flow detection device and a measurement method. Background technique [0002] The collection of field information is the primary link in the practice of precision agriculture technology, especially the acquisition of crop yield information is particularly important. Because the establishment of the spatial difference distribution map of crop yield is the starting point for the implementation of "precision agriculture". It is the result of crop growth under the comprehensive influence of many environmental factors and farmland production management measures. It is the scientific control input and management decision-making in the process of crop production. basis for the measures. The grain flow sensor is the core component in the production measurement system. There are mainly four types of grain flow sensor...

Claims

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Application Information

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IPC IPC(8): A01D41/127
CPCA01D41/1272
Inventor 胡静涛王鹤高雷白晓平张天贾岩峰
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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