A DSP camera control circuit for a golf simulation system detector

Abstract

The utility model discloses a DSP camera control circuit of golf simulation system detector, 40 feet, 59 feet, 65 feet, 68 feet, 87 feet, 77 feet, 66 feet, 67 feet of blackfin digital signal processor U2 respectively correspond to be connected with resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, 8 feet, 10 feet, 28 feet, 24 feet, 25 feet, 32 feet, 33 feet, 30 feet, 31 feet of CMOS image sensor U4 respectively correspond to be connected with resistance R12, resistance 13, resistance 14, resistance R15, resistance R16, resistance R17, resistance R10, resistance 11, resistance 19, the 23 feet of CMOS image sensor U4 is connected with CMOS logic chip U5, and the 5 feet of CMOS logic chip U5 connects electrolytic capacitor C2 and power supply end CAM3V3, and the resistance R18 is connected between the 1 foot and 3 feet of CMOS logic chip U5, and the 26 feet, 22 feet, 23 feet of CMOS image sensor U4 respectively correspond to be connected with resistance R20, resistance 21, resistance 22, and the resistance of the product plays current -limiting protection and impedance matching, and the protection circuit is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to a camera detection control device for a golf simulation system detector, and more particularly to a DSP camera control circuit for a golf simulation system detector. Background Technology

[0002] 1. Chinese Patent Publication No. CN204231564U discloses a general-purpose real-time image processing system based on DSP, including an image acquisition module, an image processing module, and a result output module, which are respectively connected to a logic control module. The image acquisition module uses a camera to acquire continuous analog image signals and converts them into digital image signals. The image processing module performs calculations on the converted digital image signals. The result output module performs calculations on the processed signals and outputs them. The logic control module controls the operation of the image acquisition module, the image processing module, and the result output module.

[0003] The above discloses a module of a general real-time image processing system for DSP. However, this general real-time image processing system for DSP is not applicable to golf simulation system detectors. Furthermore, the specific execution circuit structure is not disclosed. Therefore, it is necessary to develop a DSP camera control circuit suitable for golf simulation system detectors.

[0004] 2. Chinese Patent Publication No. CN205451192U discloses a real-time image processing circuit based on DSP, which includes a chip IC of model M68HC12. The first pin of the chip IC is connected to one end of resistor R2, the base of transistor Q1, one end of resistor R1, the cathode of diode D2, and the cathode of diode D4. The anode of diode D4 is connected to the cathode of diode D3 and the second pin of the secondary coil of transformer T. The anode of diode D1 is connected to the anode of diode D3, the other end of resistor R1, the emitter of transistor Q1, one end of capacitor C1, the cathode of diode D5, the emitter of transistor Q2, one end of resistor R4, one end of resistor R6, the cathode of diode D7, and one end of capacitor C3.

[0005] The above discloses a real-time image processing circuit for a DSP, but this real-time image processing circuit for a DSP is not suitable for use in a golf simulation system detector. Therefore, it is necessary to develop a DSP camera control circuit suitable for a golf simulation system detector. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a DSP camera control circuit for a golf simulation system detector with reasonable structural design, stable voltage, and stable operation.

[0007] The solution to the above technical problem is as follows:

[0008] A DSP camera control circuit for a golf simulation system detector includes a Blackfin digital signal processor U2 and a CMOS image sensor U4. The Blackfin digital signal processor U2 has resistors R2 and R3 connected to pins 40 and 59 respectively, and the other ends of resistors R2 and R3 are connected to the power supply terminal CAM3V3.

[0009] Pins 65, 68, 87, 77, 66, and 67 of the Blackfin digital signal processor U2 are respectively connected to resistors R4, R5, R6, R7, R8, and R9. The other end of resistors R4, R5, R6, R7, and R8 is connected to the power supply terminal CAM3V3; the other end of resistor R9 is grounded. Pin 34 of the Blackfin digital signal processor U2 is connected to resistor R32, and the other end of resistor R32 is connected to the power supply terminal SW5V.

[0010] Pins 8, 10, 28, 24, 25, and 32 of the CMOS image sensor U4 are respectively connected to resistors R12, R13, R14, R15, R16, and R17. The other end of resistors R12, R13, R14, R15, R16, and R17 is connected to the power supply terminal CAM3V3. Pins 33, 30, and 31 of the CMOS image sensor U4 are respectively connected to resistors R10, R11, and R19. The other end of resistors R10, R11, and R19 is grounded.

[0011] Pin 23 of the CMOS image sensor U4 is connected to the CMOS logic chip U5. Pin 5 of the CMOS logic chip U5 is connected to the electrolytic capacitor C2 and the power supply terminal CAM3V3. The other end of the electrolytic capacitor C2 is grounded. A resistor R18 is connected between pins 1 and 3 of the CMOS logic chip U5. Pin 3 of the CMOS logic chip U5 is grounded. Pins 26, 22, and 23 of the CMOS image sensor U4 are respectively connected to resistors R20, R21, and R22. The other ends of resistors R20, R21, and R22 are grounded.

[0012] The beneficial effects of the DSP camera control circuit of the golf simulation system detector of this utility model are as follows: 1. In terms of current limiting protection, each resistor can limit the input current, prevent large current from impacting the internal circuit, and effectively protect the fragile input circuit from damage; 2. In terms of impedance matching, in high-speed signal transmission, the series resistors in the input circuit of each pin can match the characteristic impedance of the signal line, reduce reflection and ringing, and stabilize the input voltage; 3. In terms of noise suppression, each resistor can filter out high-frequency noise and improve the signal-to-noise ratio; 4. The electrolytic capacitor connected to the power supply terminal is mainly used for power supply filtering and decoupling to reduce the interference of power supply noise on the chip. Attached Figure Description

[0013] Figure 1 This is the circuit schematic diagram of the Blackfin digital signal processor U2 of this utility model;

[0014] Figure 2 This is the circuit schematic diagram of the CMOS image sensor U4 of this utility model.

[0015] Figure 3 This is the circuit diagram of the low-dropout linear regulator U10 of this utility model.

[0016] Figure 4 This is the circuit diagram of the low-dropout linear regulator U12 of this utility model.

[0017] Figure 5 This is the circuit diagram of the low-dropout linear regulator U13 of this utility model.

[0018] Figure 6 This is the circuit schematic diagram of the SPI interface NOR Flash memory chip U6 of this utility model.

[0019] Figure 7 This is the circuit schematic diagram of the active crystal oscillator U3 of this utility model.

[0020] Figure 8 This is the circuit schematic diagram of the passive crystal oscillator Y1 of this utility model.

[0021] Figure 9 This is the circuit schematic diagram of the passive crystal oscillator Y2 of this utility model.

[0022] Figure 10 This is the circuit schematic diagram of connector J43 of this utility model;

[0023] Figure 11 This is the circuit diagram of connector J44 of this utility model. Detailed Implementation

[0024] like Figures 1 to 11The diagram shows a DSP camera control circuit for a golf simulation system detector, including a Blackfin digital signal processor U2 and a CMOS image sensor U4. The Blackfin digital signal processor U2 is a converged architecture processor from Analog Devices (ADI) that integrates DSP and MCU features. It combines a 32-bit RISC instruction set with dual 16-bit MAC (multiply-accumulate) DSP functions, supports 10-stage pipelined operation, and features both high code density and real-time signal processing capabilities. It integrates dual MACs, a 40-bit ALU, and a video processing unit, supports SIMD instruction sets, and is suitable for parallel processing of audio, video, and other multimedia data. It provides dynamic power management, supporting full-speed operation, active, sleep, deep sleep, and hibernation modes, and can dynamically adjust voltage and clock frequency according to the load to reduce power consumption. The Blackfin digital signal processor U2 has a clock frequency of up to 400MHz and 800MHz MAC performance. The Blackfin digital signal processor U2 adopts the Blackfin+ architecture, supports 16 / 32-bit mixed-signal operations, and has built-in 136KB L1 SRAM and 1MB L2 SRAM (with ECC protection). It supports USB 2.0HS OTG and CAN. 2.0B, SPI / I 2 C and other interfaces.

[0025] The U4 CMOS image sensor is a solid-state imaging device based on complementary metal-oxide-semiconductor (CMOS) technology. It converts light signals into digital images through photoelectric conversion. Its core structure includes modules such as a pixel array, row / column drivers, timing control logic, and AD converter, all integrated on a single silicon chip to achieve high integration. It adopts vertical stacking of pixel layers and circuit layers to reduce size and noise, supports higher pixel density, and integrates technologies such as Bayer array filters, global shutter, and hybrid bonding. It has a dynamic range exceeding 100dB, supports high-speed data processing, and has built-in digital signal processing functions such as automatic exposure control and white balance, reducing the need for external circuitry. The U4 CMOS image sensor is a high-performance wide-VGA image sensor that achieves separation of bright and dark areas through controllable exposure technology. It is suitable for high-contrast scenes and can acquire clear images in environments with both strong light and shadow. It supports 720×480 pixel resolution, video capture of up to 60 frames per second, and provides high-speed detail detection. It adopts TrueSNAP (actual effective pixels at shutter node) technology to reduce the trailing phenomenon when imaging fast-moving objects, and has enhanced near-infrared (NIR) function to optimize imaging effects in night or low-light scenes.

[0026] Pins 40 and 59 of the Blackfin digital signal processor U2 are respectively connected to resistors R2 and R3. The other end of resistors R2 and R3 is connected to the power supply terminal CAM3V3.

[0027] Pins 65, 68, 87, 77, 66, and 67 of the Blackfin digital signal processor U2 are respectively connected to resistors R4, R5, R6, R7, R8, and R9. The other end of resistors R4, R5, R6, R7, and R8 is connected to the power supply terminal CAM3V3; the other end of resistor R9 is grounded. Pin 34 of the Blackfin digital signal processor U2 is connected to resistor R32, and the other end of resistor R32 is connected to the power supply terminal SW5V.

[0028] Pins 8, 10, 28, 24, 25, and 32 of the CMOS image sensor U4 are respectively connected to resistors R12, R13, R14, R15, R16, and R17. The other end of resistors R12, R13, R14, R15, R16, and R17 is connected to the power supply terminal CAM3V3. Pins 33, 30, and 31 of the CMOS image sensor U4 are respectively connected to resistors R10, R11, and R19. The other end of resistors R10, R11, and R19 is grounded.

[0029] The functions of resistors R2, R3, R4, R5, R6, R7, R8, R32, R12, R13, R14, R15, R16, and R17 are as follows: For current limiting protection: series resistors limit the input current, preventing large currents from impacting the internal circuitry. For example, when a pin accidentally comes into contact with static electricity, a high-voltage pulse, or the power supply voltage, these current-limiting resistors effectively protect fragile input circuits (such as analog switches, sampling capacitors, etc.) from damage. For impedance matching: in high... In high-speed signal transmission, series resistors in the input circuit of each pin can match the characteristic impedance of the signal line, reducing reflection and ringing. For example, when the output impedance of the signal source is low, the series resistor can absorb the reflected signal and stabilize the input voltage. In terms of noise suppression, resistors R2, R3, R4, R5, R6, R7, R8, R32, R12, R13, R14, R15, R16, and R17 can filter out high-frequency noise (such as electromagnetic interference and aliasing signals) and improve the signal-to-noise ratio.

[0030] The CMOS image sensor U4 is responsible for converting the optical image captured by the lens into a parallel digital pixel data stream (i.e., the DOUT0~DOUT7 pins of the CMOS image sensor U4). The Blackfin digital signal processor U2 writes configuration parameters to the internal registers of the CMOS image sensor U4 via the I2C bus (i.e., the SCL and SDA pins; the SCL and SDA pins of the Blackfin digital signal processor U2 are connected to the SCL and SDA pins of the CMOS image sensor U4) to precisely control its exposure time, gain, frame rate, etc. The RESET_BAR pin of the CMOS image sensor U4 is used for hardware reset of the sensor.

[0031] The CMOS image sensor U4 generates line synchronization (pin LV_CAM interface), frame synchronization (pin FV_CAM interface), and pixel clock (pin PIXCLK_CAM interface) signals. The Blackfin digital signal processor U2 uses these synchronization signals to accurately capture each frame of image data. Data transmission: Driven by the synchronization signals, the CMOS image sensor U4 outputs 10 bits of pixel data in parallel to the Blackfin digital signal processor U2 through the DOUT bus (i.e., pins DOUT0 to DOUT7 interface).

[0032] The pins LV_CAM, FV_CAM, and PIXCLK_CAM of the Blackfin digital signal processor U2 are connected to the corresponding pins LV_CAM, FV_CAM, and PIXCLK_CAM of the CMOS image sensor U4.

[0033] Pin 23 of the CMOS image sensor U4 is connected to the CMOS logic chip U5. Pin 5 of the CMOS logic chip U5 is connected to the electrolytic capacitor C2 and the power supply terminal CAM3V3. The other end of the electrolytic capacitor C2 is grounded. A resistor R18 is connected between pins 1 and 3 of the CMOS logic chip U5. Pin 3 of the CMOS logic chip U5 is grounded. Pins 26, 22, and 23 of the CMOS image sensor U4 are respectively connected to resistors R20, R21, and R22. The other ends of resistors R20, R21, and R22 are grounded.

[0034] The electrolytic capacitor C2 connected to the power supply terminal of the CMOS logic chip U5 is mainly used for power supply filtering and decoupling to reduce power supply noise interference to the chip. In terms of power supply filtering: the electrolytic capacitor C2 smooths voltage fluctuations and reduces power supply ripple by storing and releasing charge. For example, in a power supply circuit, the electrolytic capacitor C2 can reduce the ripple voltage from several volts to the millivolt level, protecting the chip from damage caused by voltage fluctuations. In terms of decoupling: the electrolytic capacitor C2 bypasses high-frequency interference signals to ground, preventing positive feedback or self-oscillation caused by the internal resistance of the power supply. For example, interference generated by the internal logic gates of the chip in the 10-50MHz range can be effectively filtered out by the 0.1μF electrolytic capacitor C2. In terms of load surge buffering: when the load current demand of the CMOS logic chip U5 changes suddenly, the electrolytic capacitor C2 can provide instantaneous current to ensure stable power supply.

[0035] Resistors R9, R10, R11, R19, R20, R21, and R22 can improve impedance matching, reduce reflection and overshoot problems, match the characteristic impedance of the signal source and the transmission line, and reduce high-frequency noise.

[0036] The primary purpose of resistor R18 is to achieve signal matching and enhance anti-interference capabilities. It is used in high-speed digital circuits or differential signal transmission scenarios, and its specific functions are as follows: 1. In terms of signal matching: By connecting the resistor, the signal transmission characteristics between pins can be adjusted to ensure impedance matching between the source and load ends and reduce reflection interference; 2. In terms of enhanced anti-interference: This resistor can effectively absorb external noise interference and prevent signal fluctuation; 3. Resistance range: Generally, 10kΩ is selected to match the driving capability and signal frequency adjustment of this circuit; 4. Component type: Ceramic composite resistors are selected to meet high-frequency characteristics requirements.

[0037] CAM3V3 typically refers to the 3.3V power supply pin of the ESP32-CAM module, which supports low-level input functionality.

[0038] A DSP camera control circuit for a golf simulation system detector further includes a low-dropout linear regulator U10. Pin 1 of the low-dropout linear regulator U10 is grounded. Pin 3 of the low-dropout linear regulator U10 is connected to the positive terminal of electrolytic capacitor C47 and the power supply terminal SW5V. Pins 2 and 4 of the low-dropout linear regulator U10 are connected to a ferrite bead L4. The other end of the ferrite bead L4 is connected to power supply terminals SW3V3 and CAM3V3. Power supply terminals SW3V3 and CAM3V3 are respectively connected to the positive terminals of electrolytic capacitors C49 and C52, respectively. The negative terminals of electrolytic capacitors C49 and C52 are grounded. The voltage at power supply terminal SW5V is reduced to the output voltage at power supply terminal CAM3V3 by the low-dropout linear regulator U10. The ferrite bead L4 is used for high-frequency filtering at the output terminal to further isolate noise. Electrolytic capacitor C47 is primarily used for input filtering. Its function is to smooth input voltage fluctuations, reduce ripple interference, and ensure stable operation of the load circuit. Electrolytic capacitor C47 stores electrical energy, absorbing excess energy when the input voltage is high and releasing energy when the voltage is low, thereby reducing voltage fluctuations and improving power supply stability. Electrolytic capacitor C49 (positive terminal) and electrolytic capacitor C52 are mainly used to stabilize output voltage, filter, and improve transient response capability. They ensure stable output voltage by smoothing voltage fluctuations (such as transient response problems caused by voltage fluctuations or load changes).

[0039] A DSP camera control circuit for a golf simulation system detector also includes a low-dropout linear regulator U12; pin 2 of the low-dropout linear regulator U12 is grounded; pins 1 and 3 of the low-dropout linear regulator U12 are connected to the power supply terminal SW3V3 and a decoupling capacitor C57, the other end of which is grounded; pins 4 and 5 of the low-dropout linear regulator U12 are connected to a ferrite bead L6, the other end of which is connected to the power supply terminal SW1V1 and an electrolytic capacitor C53, the other end of which is grounded. The voltage at the power supply terminal SW3V3 is reduced to the output voltage of the power supply terminal SW1V1 by the low-dropout linear regulator U12. The ferrite bead L6 is used for high-frequency filtering at the output to further isolate noise. Decoupling capacitor C57 is mainly used to filter out high-frequency noise interference and stabilize the supply voltage. By absorbing high-frequency AC components on the power line (such as transient current surges generated by digital circuit switching), C57 directs this noise to ground, thereby reducing power supply voltage fluctuations. For high-precision circuits, decoupling capacitor C57 can significantly improve power supply stability and reduce the risk of circuit malfunctions caused by noise. Electrolytic capacitor C53 is mainly used to stabilize the output voltage, filter, and improve transient response capability. By smoothing voltage fluctuations (such as transient response problems caused by voltage fluctuations or load changes), it ensures stable output voltage.

[0040] A DSP camera control circuit for a golf simulation system detector also includes a low-dropout linear regulator U13. Pin 1 of the low-dropout linear regulator U13 is grounded. Pin 3 of the low-dropout linear regulator U13 is connected to the positive terminals of decoupling capacitor C55 and electrolytic capacitor C54, and to the power supply terminal SW5V. The other end of decoupling capacitor C55 and the negative terminal of electrolytic capacitor C54 are grounded. Pins 2 and 4 of the low-dropout linear regulator U13 are connected to a ferrite bead L7. The other end of ferrite bead L7 is connected to the power supply terminal CAM3A3 and the positive terminal of electrolytic capacitor C56, and the other end of electrolytic capacitor C56 is grounded. Ferrite bead L7 is used for high-frequency filtering at the output terminal to further isolate noise. Electrolytic capacitor C54 is mainly used for input filtering, its function being to smooth input voltage fluctuations, reduce ripple interference, and ensure stable operation of the load circuit. Electrolytic capacitor C54 stores electrical energy, absorbing excess energy when the input voltage is high and releasing energy when the voltage is insufficient, thereby reducing voltage fluctuations and improving power supply stability. Electrolytic capacitor C56 is mainly used to stabilize output voltage, filter, and improve transient response capability. By smoothing voltage fluctuations (such as transient response problems caused by voltage fluctuations or load changes), it ensures stable output voltage. Decoupling capacitor C55 is mainly used to filter out high-frequency noise interference and stabilize the supply voltage. By absorbing high-frequency AC components on the power line (such as transient current surges generated by digital circuit switching), decoupling capacitor C55 conducts this noise to ground, thereby reducing power supply voltage fluctuations. For high-precision circuits, decoupling capacitor C55 can significantly improve power supply stability and reduce the risk of circuit malfunctions caused by noise.

[0041] A DSP camera control circuit for a golf simulation system detector also includes an SPI interface NOR Flash memory chip U6. Pins 5, 1, 3, 7, and 2 of the memory chip U6 are connected to resistors R25, R26, R27, R28, and R29, respectively. The other ends of resistors R25, R26, R27, R28, and R29 are connected to a decoupling capacitor C31 and a power supply terminal CAM3V3. The other end of decoupling capacitor C31 is grounded. Pin 6 of the memory chip U6 is connected to resistor R30, the other end of which is grounded. Pin 8 of the memory chip U6 is connected to the power supply terminal CAM3V3. Resistors R25, R26, R27, R28, and R29 can reduce signal reflection and ringing, ensuring stable signal transmission. They limit input current through voltage division, preventing chip damage due to instantaneous high voltage or overcurrent. For example, they can absorb reflected noise and external interference on signal lines, reduce the impact of electromagnetic interference (EMI) on the memory, and buffer power fluctuations through voltage division. Decoupling capacitor C31 is mainly used to filter out high-frequency noise interference and stabilize the power supply voltage. By absorbing the high-frequency AC components on the power line (such as transient current surges generated by the switching action of digital circuits), decoupling capacitor C31 conducts these noises to the ground line, thereby reducing power supply voltage fluctuations. For high-precision circuits, decoupling capacitor C31 can significantly improve power supply stability and reduce the risk of circuit malfunctions caused by noise.

[0042] A DSP camera control circuit for a golf simulation system detector also includes an active crystal oscillator U3. Pins 1 and 4 of the active crystal oscillator U3 are connected to the power supply terminal CAM3V3 and the load capacitor C1, with the other end of the load capacitor C1 grounded. The load capacitor C1 has a power rating of 0.1uF and is mainly used to stabilize the oscillation frequency of the crystal oscillator circuit. In this circuit, the load capacitor is used to smooth the voltage, filter noise, and extend the signal rise time, thereby reducing electromagnetic interference. Clock: The active crystal oscillator U3 provides the master clock required for the operation of the CMOS image sensor U4. The SYSCLK pin interface of the active crystal oscillator U3 is connected to the SYSCLK pin interface of the CMOS image sensor U4.

[0043] A DSP camera control circuit for a golf simulation system detector further includes a passive crystal oscillator Y1; pins 1 and 3 of the passive crystal oscillator Y1 are respectively connected to load capacitors C21 and C22, and the other ends of load capacitors C21 and C22 are grounded; the DSP camera control circuit for a golf simulation system detector further includes a passive crystal oscillator Y2; pins 1 and 3 of the passive crystal oscillator Y2 are respectively connected to load capacitors C29 and C30, and the other ends of load capacitors C29 and C30 are grounded. The Blackfin digital signal processor U2 is responsible for executing complex image processing algorithms (such as the ball-finding algorithm analyzed earlier), controlling the exposure and readout timing of the CMOS image sensor U4, communicating with the Flash memory of the golf simulation system detector, and exchanging instructions and data with the main control MCU of the golf simulation system detector through the UART interface. In terms of coordination, the clock function of the Blackfin digital signal processor U2 relies on passive crystal oscillators Y1 and Y2. Passive crystal oscillator Y2 provides the system master clock through the SYS_XTAL_CAM pin; passive crystal oscillator Y1 provides the clock for its internal USB module through the USB_XTAL_CAM pin. Storage function: The Blackfin digital signal processor U2 loads program code from the NOR Flash memory chip U6 via the SPI interface during startup (Bootloader mode). During runtime, it can also be used to store calibration parameters or other non-volatile data. Communication function: The Blackfin digital signal processor U2 communicates with the main control MCU of the golf simulation system detector through the UART interface composed of the PB07 (DSP_TXD) and PB08 (DSP_RXD) pins.

[0044] The load capacitors C21, C22, C29, and C30 have a power rating of 18pF and are mainly used to stabilize the oscillation frequency of the crystal oscillator circuit. In this circuit, the load capacitors are used to smooth the voltage, filter out noise, and extend the signal rise time, thereby reducing electromagnetic interference.

[0045] The DSP camera control circuit is a highly integrated image processing system. The Blackfin digital signal processor U2 serves as the core controller, which precisely configures and controls the CMOS image sensor U4 through the I2C bus (i.e., pins SCL and SDA interface; the pins SCL and SDA interface of the Blackfin digital signal processor U2 are connected to the pins SCL and SDA interface of the CMOS image sensor U4). The active crystal oscillator U3 provides a stable operating clock for the CMOS image sensor U4. When image acquisition is required, the Blackfin digital signal processor U2 or external commands generate an exposure signal through the CMOS logic chip U5. The CMOS image sensor U4 then captures a frame of image and transmits the raw pixel data at high speed to the Blackfin digital signal processor U2 through its parallel interface. The Blackfin digital signal processor U2 uses its powerful computing capabilities to perform real-time analysis of the image data and sends the results to the main system of the golf simulation system detector through the UART interface, connector J43, and connector J44. The DSP camera control circuit is provided with multiple stable and clean power supplies by a precision power network consisting of low-dropout linear regulators U10, U12, and U13. The pin interfaces of connectors J43 and J44 are connected to the corresponding pin interfaces of the Blackfin digital signal processor U2.

[0046] In the DSP camera control circuit of this golf simulation system detector, the same pin interfaces between the Blackfin digital signal processor U2, CMOS image sensor U4, low dropout linear regulator U10, low dropout linear regulator U12, low dropout linear regulator U13, SPI interface NOR Flash memory chip U6, active crystal oscillator U3, passive crystal oscillator Y1, and passive crystal oscillator Y2 are connected. For example, the pins SPI2_MOSI_CAM and SPI2_CLK_CAM of the SPI interface NOR Flash memory chip U6 are connected to the pins SPI2_MOSI_CAM and SPI2_CLK_CAM of the Blackfin digital signal processor U2R.

Claims

1. A DSP camera control circuit for a golf simulation system detector, comprising a Blackfin digital signal processor U2 and a CMOS image sensor U4, characterized in that: Pins 40 and 59 of the Blackfin digital signal processor U2 are respectively connected to resistors R2 and R3. The other end of resistors R2 and R3 is connected to the power supply terminal CAM3V3. Pins 65, 68, 87, 77, 66, and 67 of the Blackfin digital signal processor U2 are respectively connected to resistors R4, R5, R6, R7, R8, and R9. The other end of resistors R4, R5, R6, R7, and R8 is connected to the power supply terminal CAM3V3; the other end of resistor R9 is grounded. Pin 34 of the Blackfin digital signal processor U2 is connected to resistor R32, and the other end of resistor R32 is connected to the power supply terminal SW5V. Pins 8, 10, 28, 24, 25, and 32 of the CMOS image sensor U4 are respectively connected to resistors R12, R13, R14, R15, R16, and R17. The other end of resistors R12, R13, R14, R15, R16, and R17 is connected to the power supply terminal CAM3V3. Pins 33, 30, and 31 of the CMOS image sensor U4 are respectively connected to resistors R10, R11, and R19. The other end of resistors R10, R11, and R19 is grounded. Pin 23 of the CMOS image sensor U4 is connected to the CMOS logic chip U5. Pin 5 of the CMOS logic chip U5 is connected to the electrolytic capacitor C2 and the power supply terminal CAM3V3. The other end of the electrolytic capacitor C2 is grounded. A resistor R18 is connected between pins 1 and 3 of the CMOS logic chip U5. Pin 3 of the CMOS logic chip U5 is grounded. Pins 26, 22, and 23 of the CMOS image sensor U4 are respectively connected to resistors R20, R21, and R22. The other ends of resistors R20, R21, and R22 are grounded.

2. The DSP camera control circuit for a golf simulation system detector according to claim 1, characterized in that: It also includes a low-dropout linear regulator U10; pin 1 of the low-dropout linear regulator U10 is grounded; pin 3 of the low-dropout linear regulator U10 is connected to the positive terminal of electrolytic capacitor C47 and the power supply terminal SW5V; pins 2 and 4 of the low-dropout linear regulator U10 are connected to a ferrite bead L4, the other end of the ferrite bead L4 is connected to the power supply terminals SW3V3 and CAM3V3, the power supply terminals SW3V3 and CAM3V3 are respectively connected to the positive terminals of electrolytic capacitors C49 and C52, and the negative terminals of electrolytic capacitors C49 and C52 are grounded.

3. The DSP camera control circuit for a golf simulation system detector according to claim 1, characterized in that: It also includes a low-dropout linear regulator U12; pin 2 of the low-dropout linear regulator U12 is grounded; pins 1 and 3 of the low-dropout linear regulator U12 are connected to the power supply terminal SW3V3 and a decoupling capacitor C57, the other end of the decoupling capacitor C57 is grounded; pins 4 and 5 of the low-dropout linear regulator U12 are connected to a ferrite bead L6, the other end of the ferrite bead L6 is connected to the power supply terminal SW1V1 and an electrolytic capacitor C53, the other end of the electrolytic capacitor C53 is grounded.

4. The DSP camera control circuit for a golf simulation system detector according to claim 1, characterized in that: It also includes a low-dropout linear regulator U13; pin 1 of the low-dropout linear regulator U13 is grounded; pin 3 of the low-dropout linear regulator U13 is connected to the positive terminals of decoupling capacitor C55 and electrolytic capacitor C54 and to the power supply terminal SW5V, and the other end of decoupling capacitor C55 and the negative terminal of electrolytic capacitor C54 are grounded; pins 2 and 4 of the low-dropout linear regulator U13 are connected to a ferrite bead L7, the other end of ferrite bead L7 is connected to the power supply terminal CAM3A3 and the positive terminal of electrolytic capacitor C56, and the other end of electrolytic capacitor C56 is grounded.

5. The DSP camera control circuit for a golf simulation system detector according to claim 1, characterized in that: It also includes an SPI interface NOR Flash memory chip U6; pins 5, 1, 3, 7, and 2 of memory chip U6 are connected to resistors R25, R26, R27, R28, and R29 respectively; the other ends of resistors R25, R26, R27, R28, and R29 are connected to decoupling capacitor C31 and the power supply terminal CAM3V3, and the other end of decoupling capacitor C31 is grounded; pin 6 of memory chip U6 is connected to resistor R30, and the other end of resistor R30 is grounded; Pin 8 of the memory chip U6R is connected to the power supply terminal CAM3V3.

6. The DSP camera control circuit for a golf simulation system detector according to claim 1, characterized in that: It also includes an active crystal oscillator U3; pins 1 and 4 of the active crystal oscillator U3 are connected to the power supply terminal CAM3V3 and the load capacitor C1, and the other end of the load capacitor C1 is grounded.

7. The DSP camera control circuit for a golf simulation system detector according to claim 1, characterized in that: It also includes a passive crystal oscillator Y1; pins 1 and 3 of the passive crystal oscillator Y1 are respectively connected to load capacitors C21 and C22, and the other ends of load capacitors C21 and C22 are grounded.

8. The DSP camera control circuit for a golf simulation system detector according to claim 1, characterized in that: It also includes a passive crystal oscillator Y2; pins 1 and 3 of the passive crystal oscillator Y2 are respectively connected to load capacitors C29 and C30, and the other ends of load capacitors C29 and C30 are grounded.

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