CN203435089U - DSP and FPGA-based real-time detection apparatus for agronomic parameter of fruit tree - Google Patents

Abstract

The utility model discloses a real-time detection device for fruit tree agronomic parameters based on DSP and FPGA, which comprises an FPGA coprocessor and a DSP chip, and is characterized in that the FPGA coprocessor is connected with the DSP chip, and both the FPGA coprocessor and the DSP chip are connected. to the power supply circuit; the FPGA coprocessor is connected with a video acquisition module, reset circuit, verification circuit and storage module; the DSP chip is connected with a JETG circuit, reset circuit, storage module and display module, and the display module is connected with the verification circuit . The structure of the combination of DSP and FPGA in the utility model ensures the real-time and accuracy of the detection results, obtains the basic agronomic parameters of the crops in real time without destroying the existing growth conditions of the crops, and achieves intelligent high-precision online The purpose of real-time detection provides an important basis for real-time variable spraying, and it is suitable for small-scale operations in small plots in my country, and has great practical application value.

Description

Real-time detection device for fruit tree agronomic parameters based on DSP and FPGA

technical field

The utility model relates to the technical field of electronic control, in particular to a real-time detection device for fruit tree agronomic parameters based on DSP and FPGA. the

Background technique

The general method of image processing technology to detect agronomic parameters: use image acquisition systems such as scanners and digital cameras to collect crop images, and then use digital image processing algorithms to obtain the representation of agronomic parameters in digital images, or extract and The geometric and color features related to the agronomic parameters are regressed on the real values of the measured agronomic parameters to obtain a prediction model.

Contents of the invention

The purpose of this utility model is to provide a real-time detection device for fruit tree agronomic parameters based on DSP and FPGA, which realizes the accurate collection of high-frequency image signals, and can ensure the real-time and accuracy of calculation and processing, and achieves high intelligence. The purpose of online real-time detection of precision. the

The utility model is achieved in that the real-time detection device of fruit tree agronomic parameters based on DSP and FPGA comprises an FPGA coprocessor and a DSP chip, and is characterized in that: the FPGA coprocessor is connected with the DSP chip, and both the FPGA coprocessor and the DSP chip are connected. Connected to the power circuit; connected to the FPGA coprocessor is a video acquisition module, reset circuit, verification circuit and storage module; connected to the DSP chip is a JETG circuit, reset circuit, storage module and display module, display module and verification circuit connect. the

The video acquisition module includes a CCD camera, the CCD camera is connected with the video processing chip through the A/D conversion chip, the A/D conversion chip is connected with an initialization module, and the video processing chip is connected with the FPGA coprocessor. the

The reset circuit has a clock circuit. The clock circuit provides a unified working sequence for the whole system. the

The storage module includes SDRAM storage module and FLASH module. the

The power supply circuit is designed to provide the required 3.3V and 1.8V core voltages for the system, and is designed with a 1.2V reference voltage. the

The reset circuit keeps the system in a stable and reliable initial state when it is initially powered on. the

The FPGA coprocessor is the core part of image acquisition, and mainly completes the format conversion, frame storage and image output control functions of the video data collected by the system. the

The storage module includes SDRAM module and FLASH module, SDRAM is used as the cache of video data, and FLASH stores the detection result obtained by DSP algorithm. the

The verification circuit uses ADV7123 to convert the digital image data into analog data and uses it to drive the VGA monitor to display the image, so as to demonstrate the effect of image acquisition. the

The main function of the initialization module is to configure the registers of the A/D conversion chip through the I ² C bus, so as to decode the PAL video data collected by the CCD camera into YUV4:2:2 data.

The function of the video processing module is to process the YUV data sent by the A/D conversion chip; use the frame storage function of the SDRAM controller and the assistance of the asynchronous FIFO memory to store the adjacent three frames of image data to the fixed address of the SDRAM. the

The display module is used to generate timing for driving VGA, and put the analog image output by ADV7123 into the VGA display for display. the

Owing to having adopted above-mentioned technical scheme, compared with prior art, the structure that the utility model DSP combines with FPGA utilizes FPGA coprocessor to have powerful on-the-spot programmable ability, has the hardware algorithm that does timing adjustment and image processing Advantages; the DSP controller is an embedded processor of the Haval structure system, with independent data bus and address bus, and independent hardware multiplier, so it is very suitable for digital signal processing; combining the two can quickly complete the image signal collection. Moreover, the DSP controller can quickly execute the image processing algorithm to ensure the real-time and accuracy of the detection results, and obtain the basic agronomic parameters of the crops in real time without destroying the existing growth conditions of the crops, achieving intelligent and high-precision The purpose of online real-time detection provides an important basis for real-time variable spraying, and is suitable for small-scale operations in small plots in my country, and has great practical application value. the

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

Accompanying drawing 2 is the structural representation of video acquisition module of the present utility model;

Accompanying drawing 3 is the working principle figure of the utility model.

Detailed ways

Embodiment of the present utility model: the fruit tree agronomy parameter real-time detection device based on DSP and FPGA, comprises FPGA coprocessor 1, DSP chip 2, is characterized in that: FPGA coprocessor 1 is connected with DSP chip 2, FPGA coprocessor 1 And DSP chip 2 are all connected on the power supply circuit 5; On FPGA coprocessor 3, be connected with video capture module 3, reset circuit 4, verification circuit 6 and storage module 7; Be connected with JETG circuit 8 on DSP chip 4, reset Circuit 4, storage module 7 and display module 9, display module 9 is connected with verification circuit 6; Described video collection module 3 comprises CCD camera 3-1, and CCD camera 3-1 passes A/D conversion chip 3-2 and video The processing chip 3-3 is connected, an initialization module 3-4 is connected on the A/D conversion chip 3-2, and the video processing chip 3-3 is connected with the FPGA coprocessor 1; the reset circuit 4 has a clock circuit. The storage module 7 includes an SDRAM storage module and a FLASH module. the

The initialization module 3-4 configures and initializes the registers of the decoding chip through the I ² C bus. The original image data format collected by the CCD camera 3-1 is the PAL system, and the A/D conversion chip 3-2 adopts the saa7113 chip for A After the /D conversion process, image data at 30 frames per second is generated, which is 8-bit image data in YCbCr (4:2:2) format with a resolution of 720×240. The signals output from the A/D conversion chip 3-2 to the FPGA coprocessor 1 include pixel clock, row and field reference signals, and image data. When the input line and field references of FPGA coprocessor 1 are all valid, under the synchronization of the input pixel clock, the received image data enters the receive buffer to the line buffer module; controlled by the SDRAM clock, one frame of data is read into the SDRAM; SDRAM When more than half of the capacity is occupied, a frame of data is read from the SDRAM to the output buffer; the output buffer is an asynchronous FIFO to complete the work of transmitting data across clocks; the DSP chip 2 reads the fixed address of the SDRAM memory through the XINTF interface. A frame of data is read by the DSP chip 2, and agronomic parameters such as biomass density are calculated in the DSP chip 2, and then sent to the LCD for display and stored in the register for later use. The verification work is completed by the YUV to RGB module and the VGA control module. The VGA interface is shown on the monitor. In the process of image processing, the processing method of three frames synchronously is adopted to improve the image processing speed to meet the real-time requirement.

Micron's SDRAM memory MT48LC16M16A2P-6A chip is selected to cache the image data output by the SAA7113 chip. the

The FLASH chip selects SST39VF800; the data collected by the system is decoded by ADV7123 and output by the VGA interface.

Claims (4)

1. A real-time detection device for fruit tree agronomic parameters based on DSP and FPGA, comprising FPGA coprocessor (1), DSP chip (2), characterized in that: FPGA coprocessor (1) is connected with DSP chip (2), Both the FPGA coprocessor (1) and the DSP chip (2) are connected to the power supply circuit (5); the FPGA coprocessor (3) is connected with a video acquisition module (3), a reset circuit (4), and a verification circuit ( 6) and a storage module (7); the DSP chip (4) is connected with a JETG circuit (8), a reset circuit (4), a storage module (7) and a display module (9), a display module (9) and a verification circuit (6) CONNECTIONS. 2. The real-time detection device for fruit tree agronomic parameters based on DSP and FPGA according to claim 1, characterized in that: the video acquisition module (3) includes a CCD camera (3-1), a CCD camera (3-1) The A/D conversion chip (3-2) is connected with the video processing chip (3-3), and the A/D conversion chip (3-2) is connected with an initialization module (3-4), and the video processing chip (3- 3) Connect with FPGA coprocessor (1). 3. The real-time detection device for fruit tree agronomic parameters based on DSP and FPGA according to claim 1, characterized in that: the reset circuit (4) has a clock circuit. 4. The real-time detection device for fruit tree agronomic parameters based on DSP and FPGA according to claim 1, characterized in that: the storage module (7) includes a SDRAM storage module and a FLASH module.

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