High-precision optical fiber type multipath white light digital sensor system

Abstract

The invention relates to the technical field of sensors, and discloses a high-precision optical fiber type multi-path white light digital sensor system, which comprises a power supply circuit, a 32-bit microprocessor main control circuit, a transmitting circuit, a receiving circuit, a multi-path output control circuit, a one-path input circuit and a man-machine interface circuit. Based on cooperative work of the power supply circuit, the 32-bit microprocessor main control circuit, the transmitting circuit, the receiving circuit, the multi-path output control circuit, the one-path input circuit and the man-machine interface circuit, processing and analysis of various signals, especially processing of color data, can be completed at the same time in a complex environment, so that the detection efficiency and precision are improved, and the detection accuracy is improved. And the application scene of the sensor is greatly expanded, the urgent requirements of the fields of industrial production, scientific research and the like on multi-parameter monitoring and flexible control are met, and the practicability and adaptability of the whole system are effectively improved.

Description

Technical Field

[0001] The present application relates to the field of sensor technology, and in particular to a high-precision fiber-optic multi-channel white light digital sensor system. Background Art

[0002] In today's era of rapid technological development, sensor technology plays a key role in many fields, but existing white fiber sensors still have many shortcomings, specifically:

[0003] In terms of circuit design, the output circuits of many sensors do not fully consider the protection mechanism and control flexibility. When facing complex electrical environments or connected to different loads, the equipment is easily damaged due to overcurrent, short circuit and other problems, and the control logic cannot be flexibly switched according to actual needs, affecting the stability and reliability of the system.

[0004] In signal processing, traditional technologies often use relatively simple methods, which are difficult to cope with the precise processing of complex optical signals. When high-precision modulation and multi-parameter analysis are required, it is impossible to achieve precise control of the signal, resulting in a significant reduction in the accuracy and reliability of the measurement results. Chinese patent number CN119197807A discloses a distributed optical fiber temperature sensor based on deep learning, but the invention lacks output protection and diverse control logic. Furthermore, in terms of signal processing and control methods, multiple means are not used to collaboratively process complex optical signals, and there is a lack of flexible external interaction design in terms of input control diversity, which limits its application scenarios and flexibility.

[0005] In addition, in the input control link, most sensors do not pay attention to the interaction design with external devices, lack effective isolation and diversified control methods, and are difficult to adapt to external triggering requirements in complex working environments, and cannot achieve efficient human-computer collaboration and system expansion.

[0006] The above shortcomings have seriously restricted the further development and application of fiber optic sensor technology. Therefore, a new technical solution of high-precision multi-channel fiber optic digital sensor is urgently needed to solve the above problems. Summary of the invention

[0007] The purpose of the present application is to provide a high-precision fiber-optic multi-channel white light digital sensor system to solve the technical problems raised in the above-mentioned background technology.

[0008] To achieve the above objectives, the present application discloses the following technical solution: a high-precision fiber-optic multi-channel white light digital sensor system, comprising:

[0009] A power supply circuit, which is used to receive a DC10V-DC30V wide voltage input, and processes the input voltage through a power input polarity reverse protection and a surge absorption circuit, and then provides power to the system after a DCDC and LDO step-down circuit and filtering;

[0010] A 32-bit microprocessor main control circuit, wherein the 32-bit microprocessor main control circuit has three independent 12-bit ADC converters built in for data calculation and multi-task processing, and the 32-bit microprocessor main control circuit is connected to the power supply circuit to obtain a working voltage;

[0011] A transmitting circuit, wherein the transmitting circuit is based on a constant current circuit, periodically and for a short time, lights up the LED, controls the lighting cycle time and lighting time based on PWM, and controls the brightness of the white LED through a DAC, and the transmitting circuit is connected to the 32-bit microprocessor main control circuit;

[0012] A receiving circuit, wherein the receiving circuit at least includes an RGB sensor, which generates three signals, R, G, and B, when white light shines on the RGB sensor. After being amplified and filtered by an analog signal amplifier and a filter circuit, the three signals are connected to the ADC pin of the 32-bit microprocessor main control circuit;

[0013] A multi-channel output control circuit, the multi-channel output control circuit is used to output the color judgment result, and the multi-channel output control circuit is connected to the 32-bit microprocessor main control circuit;

[0014] An input circuit, wherein the input circuit is used to receive an external input signal after being isolated by an optical coupler, and the input circuit is connected to the 32-bit microprocessor main control circuit;

[0015] A human-machine interface circuit, the human-machine interface circuit includes a 3-digit digital tube display circuit and a 3-key related circuit, and the human-machine interface circuit is connected to the 32-bit microprocessor main control circuit.

[0016] Preferably, the power supply circuit includes a reverse connection protection circuit, a surge absorption circuit, a DCDC main power supply, an LDO voltage barrier circuit and a power supply filter circuit.

[0017] Preferably, the 32-bit microprocessor main control circuit also includes a DAC unit, a pwm unit and a flash storage unit.

[0018] Preferably, the transmitting circuit includes a high-pass filter circuit, an analog switching unit, a constant current control circuit and a high-brightness white LED;

[0019] The high-pass filter circuit is connected to the DAC unit, and the analog switching unit is connected to the PWM unit.

[0020] Preferably, the three signals R, G and B generated by the receiving circuit are respectively connected to the 12-bit ADC converter of the 32-bit microprocessor main control circuit after being amplified and filtered by the analog signal amplifier and the filter circuit.

[0021] Preferably, the multi-channel output control circuit includes 4-channel output circuits, each output circuit includes at least NPN and PNP for program-based switching control circuits, and each output circuit is provided with corresponding over-current protection and short-circuit protection circuits.

[0022] Preferably, the one-way input circuit is used to control the on and off of the transmitting light or replace the SET button function based on the 32-bit microprocessor main control circuit.

[0023] Preferably, the 3-digit digital tube display circuit is connected to the 32-bit microprocessor main control circuit for receiving display data, and the 3-button related circuit is connected to the 32-bit microprocessor main control circuit for receiving operation instructions.

[0024] Preferably, when white light shines on the RGB sensor, three signals R, G, and B are generated, specifically:

[0025] When the light generated by the optical fiber irradiates the surface of the set target, diffuse reflection light is generated. The RGB sensor receives the diffuse reflection light and generates three signals of R, G, and B.

[0026] Preferably, the 12-bit ADC converter is used for data calculation and multi-tasking, specifically:

[0027] The color data of the set target is obtained based on the collected R, G, and B signals, and the color data is compared with the preset color to determine whether it is the required color.

[0028] Beneficial effects: The high-precision fiber-optic multi-channel white light digital sensor system of the present application is based on the collaborative work of the power supply circuit, 32-bit microprocessor main control circuit, transmitting circuit, receiving circuit, output control circuit, input circuit and human-machine interface circuit. It can simultaneously complete the processing and analysis of multiple signals in a complex environment, especially the processing of color data, which not only improves the efficiency and accuracy of detection, but also greatly expands the application scenarios of sensors, meets the urgent needs of industrial production and scientific research for multi-parameter monitoring and flexible control, and effectively improves the practicality and adaptability of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1A circuit schematic diagram of a high-precision fiber-optic multi-channel white light digital sensor system provided in an embodiment of the present application;

[0031] Figure 2 Circuit diagram of the power supply circuit provided in the embodiment of the present application

[0032] Figure 3 A circuit schematic diagram of a 32-bit microprocessor main control circuit provided in an embodiment of the present application;

[0033] Figure 4 A circuit schematic diagram of a transmitting circuit provided in an embodiment of the present application;

[0034] Figure 5 A circuit schematic diagram of a receiving circuit provided in an embodiment of the present application;

[0035] Figure 6 A circuit schematic diagram of an input circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0037] In this article, the term "comprising" is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "comprising..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0038] This embodiment discloses Figure 1 A high-precision fiber-optic multi-channel white light digital sensor system is shown, comprising:

[0039] The power supply circuit is used to receive a wide voltage input of DC10V-DC30V, and process the input voltage through the power input polarity reverse protection and surge absorption circuit, and then provide power to the system after DCDC and LDO step-down circuits and filtering;

[0040] 32-bit microprocessor main control circuit, the 32-bit microprocessor main control circuit has three independent 12-bit ADC converters built in for data calculation and multi-task processing, and the 32-bit microprocessor main control circuit is connected to the power supply circuit to obtain the working voltage;

[0041] Transmitting circuit, the transmitting circuit is based on a constant current circuit, periodically and short-timely lights up the LED, controls the lighting cycle time and lighting time based on PWM and controls the brightness of the white LED through DAC, and the transmitting circuit is connected to a 32-bit microprocessor main control circuit;

[0042] The receiving circuit includes at least an RGB sensor. When white light shines on the RGB sensor, three signals, R, G, and B, are generated. After being amplified and filtered by an analog signal amplifier and a filter circuit, the three signals are connected to the ADC pin of the 32-bit microprocessor main control circuit.

[0043] A multi-channel output control circuit, the multi-channel output control circuit is used to output the color judgment result, and the multi-channel output control circuit is connected to the 32-bit microprocessor main control circuit;

[0044] 1 input circuit, 1 input circuit is used to receive external input signals based on optocoupler isolation, and 1 input circuit is connected to the 32-bit microprocessor main control circuit;

[0045] The human-machine interface circuit includes a 3-digit digital tube display circuit and a 3-button related circuit. The human-machine interface circuit is connected to a 32-bit microprocessor main control circuit.

[0046] Based on the above, this embodiment is based on the coordinated work of the power supply circuit, the 32-bit microprocessor main control circuit, the transmitting circuit, the receiving circuit, the output control circuit, the input circuit and the human-machine interface circuit. It can simultaneously complete the processing and analysis of multiple signals in a complex environment, especially the processing of color data, which not only improves the efficiency and accuracy of detection, but also greatly expands the application scenarios of sensors, meets the urgent needs of industrial production and scientific research for multi-parameter monitoring and flexible control, and effectively improves the practicality and adaptability of the entire system.

[0047] Specifically, the power supply circuit includes a reverse connection protection circuit, a surge absorption circuit, a DCDC main power supply, an LDO voltage barrier circuit and a power supply filter circuit.

[0048] like Figure 2 As shown, as a preferred implementation of this embodiment, the power supply circuit of this embodiment is specifically:

[0049] Chip U2: Pin 4 is connected to resistor R14 (100K / 1%) and then to 24V, pin 5, one end of capacitor C19 (0.1uF / 50V) and one end of capacitor C20 (10nF / 50V) are connected and all are connected to 24V, the other end of capacitor C19 and the other end of capacitor C20 are grounded, one end of capacitor C21 (0.1uF / 50V) and pin 1 of inductor L1 are connected to pin 6, pin 1 is connected to the other end of capacitor C21, pin 2 and one end of resistor R15 (1K / 1%) are grounded, pin 3, one end of resistor R16 (8.2K / 1%) and one end of capacitor C25 (10nF / 50V) are connected to one end of capacitor C46 (10nF / 50V) Ends are connected, the other end of capacitor C46 is grounded, pin 2 of inductor L1, the other end of resistor R16, the other end of capacitor C25, one end of capacitor C23 (47uF / 10V), one end of capacitor C10 (47uF / 10V), one end of capacitor C55 (0.1uF / 50V), one end of capacitor C11 (10nF / 50V), one end of capacitor C53 (47uF / 10V) and one end of capacitor C222 (0.1uF / 50V) are all connected to VDD_7V4, and the other end of capacitor C23, the other end of capacitor C10, the other end of capacitor C55, the other end of capacitor C11, the other end of capacitor C53 and the other end of capacitor C222 are all grounded;

[0050] Chip U6: Pin 1, one end of capacitor C29 (0.1uF / 50V) and one end of capacitor C54 (10nF / 50V) are all connected to VDD_7V4, the other end of capacitor C29 and the other end of capacitor C54 are grounded, pin 2 is grounded, pin 5, one end of capacitor C31 (10nF / 50V), one end of capacitor C32 (0.1uF / 50V) and one end of capacitor C33 (47uF / 10V) are all connected to 5V_D, the other end of capacitor C31, the other end of capacitor C32 and the other end of capacitor C33 are all grounded;

[0051] Chip U8: Pin 1, one end of capacitor C40, and one end of capacitor C39 are all connected to one end of resistor R3, and the other end of resistor R3 is connected to VDD_7V4. Pin 5, one end of capacitor C42 (10nF / 50V), one end of capacitor C43 (0.1uF / 50V), and one end of capacitor C44 (4.7uF / 10V) are all connected to 5V_D. Pin 2, the other end of capacitor C40, the other end of capacitor C39, one end of resistor R9 (0R / 1%), the other end of capacitor C42, the other end of capacitor C43, and the other end of capacitor C44 are all connected to AGND, and the other end of resistor R9 is grounded.

[0052] Based on the above, this embodiment, combined with the reverse connection protection, surge absorption, voltage reduction and filtering functions in the power supply circuit, avoids equipment failures caused by power supply problems, ensures the normal operation of the system in a complex electrical environment, and provides a stable power supply basis for the operation of the entire sensor system. Compared with the shortcomings of the power supply part in the prior art, the system's anti-interference ability and durability are significantly enhanced.

[0053] Specifically, the 32-bit microprocessor main control circuit also includes a DAC unit, a pwm unit and a flash storage unit.

[0054] Based on the above, this embodiment is based on the cooperation of the built-in ADC converter, DAC unit, PWM unit and flash storage unit, making the system more accurate and efficient in signal acquisition, conversion, control signal generation and data storage, thereby improving the intelligence level and overall performance of the system.

[0055] like Figure 3 As shown in FIG. 1 , as a preferred implementation of this embodiment, the 32-bit microprocessor main control circuit of this embodiment is specifically:

[0056] Chip U1: Pin 2 is connected to KEY_SET, pin 3 is connected to LED_Green, pin 4 is connected to LED_Red, pins 5 and 6 are both empty, pin 7 is connected to capacitor C1 (470nF / 50V) and then grounded, pin 8 is connected to AGND, pin 9 is connected to 303V_BASE, pin 10 is connected to IO_IN, pin 11 is connected to V_RGADC3, pin 12 is connected to V_GBADC2, pin 13 is connected to V_BRADC1, pin 14 is connected to DAC2, pin 15 is connected to DAC, pin 16 is connected to OP_EN2, pin 17 is connected to OP_EN1, pin 18 is connected to LED8_KEY_DW, pin 19 is connected to LED8_KEY_UP, pin 21 is connected to LED8_IIC_SDA, pin 23 is connected to capacitor C14 (470nF / 10V) and then grounded, pin 24 is connected to VDD, pin 25 is connected to LED8_IIC_SCL, and pin 26 is connected to TMR _SIG_nEN, pin 27 is connected to TMR_LED_EN, pin 28 is connected to NOTUSE2, pin 29 is connected to NOTUSE1, pin 30 is connected to DUG_TX, pin 31 is connected to DUG_RX, pin 32 is connected to OUT3_N, pin 33 is connected to OUT2_N, pin 34 is connected to SWDIO, pin 35 is connected to capacitor C12 (470nF / 10V) and then grounded, pin 36 is connected to VDD, pin 37 is connected to SWCLK, pin 38 is connected to OUT1_N, pin 39 is connected to OUT3_P, pin 40 is connected to OUT2_P, pin 41 is connected to LINK_TXEN, pin 42 is connected to LINK_TX, pin 43 is connected to LINK_RX, pin 44 is connected to BOOT0 and connected to resistor R6 (10K / 1%) and then grounded, pin 45 is connected to OUT1_P, pin 46 is connected to LINK_nWP, pin 47 is connected to ground, and pin 48 is connected to VDD;

[0057] TP1 is connected to SWCLK, TP2 is connected to SWDIO, TP3 is grounded, TP4 is connected to DUG_TX, and TP5 is connected to DUG_RX;

[0058] Chip U10: Pin 1 and one end of capacitor C2 (0.1uF / 50V) are connected to 5V_D, pin 2, the other end of capacitor C2, one end of capacitor C3 (0.1uF / 50V), one end of capacitor C4 (0.1uF / 50V), one end of capacitor C5 (0.1uF / 50V), one end of capacitor C6 (0.1uF / 50V) and one end of capacitor C7 (47uF / 10V) are all grounded, pin 5, the other end of capacitor C3, the other end of capacitor C4, the other end of capacitor C5, the other end of capacitor C6 and the other end of capacitor C7 are all connected to VDD.

[0059] Specifically, the transmitting circuit includes a high-pass filter circuit, an analog switching unit, a constant current control circuit and a high-brightness white LED;

[0060] The high-pass filter circuit is connected to the DAC unit, and the analog switching unit is connected to the pwm unit.

[0061] like Figure 4 As shown, as a preferred implementation of this embodiment, the transmitting circuit of this embodiment is specifically:

[0062] TP28 is connected to VDD_7V4, TP29, one end of capacitor C59 (10nF / 50V), one end of capacitor C60 (4.7uF / 10V) and one end of resistor B2 are all connected to 5V_S, the other end of resistor B2, one end of capacitor C61 (10nF / 50V) and one end of capacitor C62 (4.7uF / 10V) are all connected to 5V, the other end of capacitor C59, the other end of capacitor C60, the other end of capacitor C61 and the other end of the capacitor are all connected to AGND; VDD_7V4 is connected to capacitor C9 (100uF / 10V) and then grounded.

[0063] Based on the above, this embodiment is based on a combination of a high-pass filter circuit, an analog switching unit, a constant current control circuit and a high-brightness white LED, as well as a connection with the related circuits of a 32-bit microprocessor main control circuit, so that the light emission can be precisely adjusted in terms of intensity, period and time, thereby improving the shortcomings of traditional technology in the control of optical signal emission and improving the accuracy and reliability of the system in target detection.

[0064] Specifically, the three signals R, G, and B generated by the receiving circuit are amplified and filtered by the analog signal amplifier and the filter circuit, and then connected to the 12-bit ADC converter of the 32-bit microprocessor main control circuit respectively.

[0065] like Figure 5 As shown, as a preferred implementation of this embodiment, the receiving circuit of this embodiment is specifically:

[0066] Chip U3: Pin 1 is connected to 3.3V_BASE and capacitor C17 and then to AGND, Pin 2 is connected to V_R and capacitor C16 (10nF / 50V) and resistor R17 (1K / 1%) and then to OP_R, Pin 3 is connected to AGND, Pin 4 is connected to TMR_SIG_nEN, Pin 5 is connected to 5V and capacitor C15 (0.1uF / 50V) and then to AGND;

[0067] Chip U5: Pin 1 is connected to 3.3V_BASE and capacitor C28 and then to AGND, Pin 2 is connected to V_G and capacitor C27 (10nF / 50V) and resistor R22 (1K / 1%) and then to OP_G, Pin 3 is connected to AGND, Pin 4 is connected to TMR_SIG_nEN, Pin 5 is connected to 5V and capacitor C26 (0.1uF / 50V) and then to AGND;

[0068] Chip U7: Pin 1 is connected to 3.3V_BASE and capacitor C37 and then to AGND, Pin 2 is connected to V_B and capacitor C36 (10nF / 50V) and resistor R24 ​​(1K / 1%) and then to OP_B, Pin 3 is connected to AGND, Pin 4 is connected to TMR_SIG_nEN, Pin 5 is connected to 5V and capacitor C34 (0.1uF / 50V) and then to AGND;

[0069] Chip U9: Pin 1, one end of capacitor C51 (0.7uF / 10V) and one end of capacitor C48 (10nF / 54V) are connected to resistor B3 and then to 5V, Pin 2, the other end of capacitor C51, the other end of capacitor C48, one end of capacitor C52 (4.7uF / 10V), one end of capacitor C50 (0.1uF / 50V), one end of capacitor C68 (0.1uF / 50V), one end of capacitor C47 (10nF / 50V) and one end of capacitor C64 (1uF / 50V) are all connected to AGND, Pin 5, the other end of capacitor C52 and the other end of capacitor C50 are all connected to one end of resistor B4, the other end of resistor B4, the other end of capacitor C68, the other end of capacitor C47 and the other end of capacitor C64 are all connected to 3.3V_BASE;

[0070] TP21, one end of capacitor C30 (4.7uF / 10V), one end of capacitor C8 (0.1uF / 50V) and one end of resistor B1 are all connected to 5V_A, TP21, the other end of capacitor C8 and the other end of capacitor C30 are all connected to AGND, the other end of resistor B1, one end of capacitor C57 (4.7uF / 10V) and one end of capacitor C56 (10nF / 50V) are all connected to 5V, the other end of capacitor C57 is connected to AGND, the other end of capacitor C56 is connected to AGND, TP23 is connected to OP_R, TP24 is connected to OP_G, TP25 is connected to OP_B, TP26 is connected to OP_EN1, and TP27 is connected to OP_EN2.

[0071] Based on the above, this embodiment processes the signal generated by the RGB sensor based on the analog signal amplifier and the filter circuit, and accurately connects it to the ADC converter, thereby ensuring the authenticity and effectiveness of the collected signal, making up for the defects of traditional technology in complex optical signal collection and processing, and providing a strong guarantee for subsequent accurate data analysis.

[0072] Specifically, the multi-channel output control circuit includes 4-channel output circuits, each output circuit includes at least NPN and PNP for switching the control circuit based on a program, and each output circuit is provided with corresponding over-current protection and short-circuit protection circuits.

[0073] Based on the above, this embodiment is based on NPN, PNP control circuits and independent overcurrent and short-circuit protection circuits. While ensuring output control flexibility, it effectively prevents equipment damage, solves the problems of the prior art in output circuit protection and control flexibility, and enhances the stability and reliability of the system.

[0074] Specifically, one input circuit is based on a 32-bit microprocessor main control circuit and is used to control the on and off of the transmitting light or replace the SET button function.

[0075] like Figure 6 As shown in FIG. 1 , as a preferred implementation of this embodiment, the one-way input circuit of this embodiment is specifically:

[0076] Pin 3 of the optocoupler PH1 is grounded, pin 4 of the optocoupler PH1 is connected to IO_IN 4, pin 2 of the optocoupler PH1, one end of the resistor R1 (1K / 1%) and one end of the capacitor C49 (10nF / 50V) are all connected to the positive electrode of the diode D7 (IN5819WS), the negative electrode of the diode D7 is connected to IN, pin 1 of the optocoupler PH1, the other end of the resistor R1 and the other end of the capacitor C49 are all connected to one end of the resistor R23 (5.6K / 1%), and the other end of the resistor R23 is connected to +24V.

[0077] Based on the above, the optically-coupled isolated input circuit of this embodiment ensures safe interaction between the system and external devices when realizing the control of the on and off of the transmitting light or replacing the SET button function, overcomes the shortcomings of the traditional sensor input control being single and lacking isolation, and improves the scalability and operational diversity of the system.

[0078] Specifically, the 3-digit digital tube display circuit is connected to the 32-bit microprocessor main control circuit for receiving display data, and the 3-button related circuit is connected to the 32-bit microprocessor main control circuit for receiving operation instructions.

[0079] Based on the above, this embodiment is based on the connection between the 3-digit digital tube display circuit and the 3-button related circuit and the 32-bit microprocessor main control circuit, so that the system can display information intuitively and facilitate user operation, improve the shortcomings of traditional technology in human-computer collaboration, and improve the user experience and system usability.

[0080] Specifically, when white light shines on the RGB sensor, three signals R, G, and B are generated, specifically:

[0081] When the light generated by the optical fiber is irradiated onto the surface of the target, diffuse reflection light is generated. The RGB sensor receives the diffuse reflection light and generates three signals: R, G, and B.

[0082] Through the above, in this embodiment, the optical fiber generates light to illuminate the target surface to generate diffusely reflected light, which is then received by the RGB sensor and converted into an electrical signal, thereby ensuring the reliability and effectiveness of the signal source. Compared with the simple processing of the traditional technology in the signal generation link, the accuracy and credibility of the system detection are improved.

[0083] Specifically, the 12-bit ADC converter is used for data calculation and multi-tasking, specifically:

[0084] The color data of the set target is obtained based on the collected R, G, and B signals, and the color data is compared with the preset color to determine whether it is the required color.

[0085] Based on the above, this embodiment uses the ADC conversion and data processing of the 32-bit microprocessor main control circuit to achieve accurate color judgment. Based on the collected R, G, B signals after ADC conversion, data calculation and comparison with the preset color are performed to accurately judge the target color, which makes up for the shortcomings of traditional technology in multi-parameter analysis and color judgment, and improves the professionalism and accuracy of the system in the field of color detection.

[0086] In summary, the high-precision fiber-optic multi-channel white light digital sensor system of this embodiment is based on the coordinated work of the power supply circuit, the 32-bit microprocessor main control circuit, the transmitting circuit, the receiving circuit, the output control circuit, the input circuit and the human-machine interface circuit. It can simultaneously complete the processing and analysis of multiple signals in a complex environment, especially the processing of color data, which not only improves the efficiency and accuracy of detection, but also greatly expands the application scenarios of sensors, meets the urgent needs of industrial production and scientific research for multi-parameter monitoring and flexible control, and effectively improves the practicality and adaptability of the entire system.

[0087] In the embodiments provided in the present application, it should be understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, code or any appropriate combination thereof. For hardware implementation, the processor can be implemented in one or more of the following units: application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, other electronic units designed to implement the functions described herein or their combination. For software implementation, part or all of the flow of the embodiment can be completed by instructing the relevant hardware through a computer program. When implemented, the above program can be stored in a computer-readable storage medium or transmitted as one or more instructions or codes on a computer-readable storage medium. Computer-readable storage media include computer storage media and communication media, wherein the communication medium includes any medium that is convenient for transmitting a computer program from one place to another. The storage medium can be any available medium that a computer can access. The computer-readable storage medium can include but is not limited to RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer.

[0088] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high-precision fiber-optic multi-channel white light digital sensor system, characterized in that: include: A power supply circuit, which is used to receive a DC10V-DC30V wide voltage input, and processes the input voltage through a power input polarity reverse protection and a surge absorption circuit, and then provides power to the system after a DCDC and LDO step-down circuit and filtering; A 32-bit microprocessor main control circuit, wherein the 32-bit microprocessor main control circuit has three independent 12-bit ADC converters built in for data calculation and multi-task processing, and the 32-bit microprocessor main control circuit is connected to the power supply circuit to obtain a working voltage; A transmitting circuit, wherein the transmitting circuit is based on a constant current circuit, periodically and for a short time, lights up the LED, controls the lighting cycle time and lighting time based on PWM, and controls the brightness of the white LED through a DAC, and the transmitting circuit is connected to the 32-bit microprocessor main control circuit; A receiving circuit, wherein the receiving circuit at least includes an RGB sensor, which generates three signals, R, G, and B, when white light shines on the RGB sensor. After being amplified and filtered by an analog signal amplifier and a filter circuit, the three signals are connected to the ADC pin of the 32-bit microprocessor main control circuit; A multi-channel output control circuit, the multi-channel output control circuit is used to output the color judgment result, and the multi-channel output control circuit is connected to the 32-bit microprocessor main control circuit; An input circuit, wherein the input circuit is used to receive an external input signal after being isolated by an optical coupler, and the input circuit is connected to the 32-bit microprocessor main control circuit; A human-machine interface circuit, the human-machine interface circuit includes a 3-digit digital tube display circuit and a 3-key related circuit, and the human-machine interface circuit is connected to the 32-bit microprocessor main control circuit.

2. The high-precision fiber-optic multi-channel white light digital sensor system according to claim 1, characterized in that: The power supply circuit comprises a reverse connection protection circuit, a surge absorption circuit, a DCDC main power supply, an LDO voltage barrier circuit and a power supply filter circuit.

3. The high-precision fiber-optic multi-channel white light digital sensor system according to claim 1, characterized in that: The 32-bit microprocessor main control circuit also includes a DAC unit, a PWM unit and a flash storage unit.

4. The high-precision fiber-optic multi-channel white light digital sensor system according to claim 3, characterized in that: The transmitting circuit includes a high-pass filter circuit, an analog switching unit, a constant current control circuit and a high-brightness white LED; The high-pass filter circuit is connected to the DAC unit, and the analog switching unit is connected to the PWM unit.

5. The high-precision fiber-optic multi-channel white light digital sensor system according to claim 1, characterized in that: The three signals R, G, and B generated by the receiving circuit are respectively connected to the 12-bit ADC converter of the 32-bit microprocessor main control circuit after being amplified and filtered by the analog signal amplifier and the filtering circuit.

6. The high-precision fiber-optic multi-channel white light digital sensor system according to claim 1, characterized in that: The multi-channel output control circuit includes 4-channel output circuits, each of which includes at least NPN and PNP for switching the control circuit based on a program, and each output circuit is provided with corresponding over-current protection and short-circuit protection circuits.

7. The high-precision fiber-optic multi-channel white light digital sensor system according to claim 1, characterized in that: The one-way input circuit is based on the 32-bit microprocessor main control circuit and is used to control the on and off of the emission light or replace the SET button function.

8. The high-precision fiber-optic multi-channel white light digital sensor system according to claim 1, characterized in that: The 3-digit digital tube display circuit is connected to the 32-bit microprocessor main control circuit for receiving display data, and the 3-key related circuit is connected to the 32-bit microprocessor main control circuit for receiving operation instructions.

9. The high-precision fiber-optic multi-channel white light digital sensor system according to claim 1, characterized in that: When white light shines on the RGB sensor, three signals R, G, and B are generated, specifically: When the light generated by the optical fiber irradiates the surface of the set target, diffuse reflection light is generated. The RGB sensor receives the diffuse reflection light and generates three signals of R, G, and B.

10. The high-precision fiber-optic multi-channel white light digital sensor system according to claim 9, characterized in that: The 12-bit ADC converter is used for data calculation and multi-tasking, specifically: The color data of the set target is obtained based on the collected R, G, and B signals, and the color data is compared with the preset color to determine whether it is the required color.

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