CN112097910A - Intelligent RGB digital color sensor circuit system - Google Patents
Intelligent RGB digital color sensor circuit system Download PDFInfo
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- CN112097910A CN112097910A CN201910522302.8A CN201910522302A CN112097910A CN 112097910 A CN112097910 A CN 112097910A CN 201910522302 A CN201910522302 A CN 201910522302A CN 112097910 A CN112097910 A CN 112097910A
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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Abstract
The embodiment of the application provides an intelligent RGB digital color sensor circuit system, including processor module, input/output module, RGB light source control module, signal processing module and for the power module of above-mentioned each module power supply, input/output module RGB light source control module signal processing module respectively with processor module electric connection, signal processing module include RGB light intensity feedback circuit, with RGB light intensity feedback circuit output electric connection's sampling unit, with sampling unit input electric connection's detected signal selection unit. The intelligent RGB digital color sensor circuit system improves the detection automation degree of the color sensor and improves the detection precision.
Description
Technical Field
The invention relates to the technical field of color sensors, in particular to an intelligent RGB digital color sensor circuit system.
Background
In the existing RGB color sensor circuit system, after the light source control module controls the sensor, the manual adjustment is adopted to select the internal or external detection head to determine the detection mode, and then the amplification factor is adjusted after the detection mode is determined.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The present invention is directed to solve the above problems, and provides an intelligent RGB digital color sensor circuit system, which can determine a detection mode through internal and external detection head signal circuits, and select a corresponding signal amplification factor according to the detection mode, so as to improve the degree of automation of a sensor, reduce the influence of human factors, and improve the detection accuracy.
In order to achieve the above object, the present invention provides an intelligent RGB digital color sensor circuit system, which includes a processor module, an input/output module, an RGB light source control module, a signal processing module, and a power module for supplying power to the above modules, wherein the input/output module, the RGB light source control module, and the signal processing module are electrically connected to the processor module, respectively, and the signal processing module includes an RGB light intensity feedback circuit, a sampling unit electrically connected to an output end of the RGB light intensity feedback circuit, and a detection signal selection unit electrically connected to an input end of the sampling unit.
Preferably, the detection signal selection unit includes a host internal detection head signal circuit, an external detection head signal circuit, and a signal amplification circuit electrically connected to the host internal detection head signal circuit output end and the external detection head signal circuit output end, the host internal detection head signal circuit includes a photo-receiving tube RX and an amplifier OP2 having an inverting input end electrically connected to the positive electrode of the photo-receiving tube RX and a non-inverting input end electrically connected to resistors (R28, R29), the divided voltage generated by the resistors (R28, R29) is the reference voltage of the amplifier OP2, the amplifier OP2 is electrically connected to the signal amplification circuit input end, and the external detection head signal circuit is electrically connected to the processor module through a resistor R32 and is electrically connected to the signal amplification circuit input end through a resistor R31.
Preferably, the input end of the external detection head signal circuit is connected with an external detection head voltage control circuit electrically connected with the processor module, the external detection head voltage control circuit comprises a composite triode Q12, a composite triode Q13 and a composite triode Q14, the composite triode Q12 and/or the composite triode Q13 and/or the composite triode Q14 are two NPN triodes connected with each other, when the input ends of the two NPN triodes both input a low level, the output is a high level, and when one or two input high levels exist at the input ends of the two NPN triodes, the output is a low level.
Preferably, a selective electronic switch is connected between the output end of the host internal detection head signal circuit, the output end of the external detection head signal circuit and the signal amplification circuit, the host internal detection head signal circuit is connected with the selective electronic switch through the output end of the amplifier OP2, and the external detection head signal circuit is electrically connected with the selective electronic switch through a resistor R31 and a filter capacitor C30.
Preferably, the signal amplification circuit include the output with sampling unit electric connection's main signal second grade amplifier circuit, with main signal second grade amplifier circuit input electric connection's magnification switches electronic switch, magnification switches electronic switch through select electronic switch with the inside first signal circuit output that detects of host computer, the first signal circuit connection of external detection, when the external detection head inserts, the processor module cuts off the sampling of inside first signal that detects and selects the first signal of external detection to sample.
Preferably, an anti-interference unit is connected between the output end of the main signal secondary amplification circuit and the sampling unit, and the anti-interference unit is a schottky diode.
Preferably, the sampling unit includes AD electron sampling control switch 1 and AD electron sampling control switch 2 of parallel connection, AD electron sampling control switch 1 AD electron sampling control switch 2 respectively with processor module electric connection to carry out the transmission of signal, AD electron sampling control switch 1's input with RGB light intensity feedback circuit electric connection, AD electron sampling control switch 2's input with detection signal selection unit's output electric connection.
Preferably, the output end of the AD electronic sampling control switch 1 is connected with a resistor R41 and is electrically connected with the processor module through the resistor R41, and the output end of the AD electronic sampling control switch 2 is connected with a resistor R42 and is electrically connected with the processor module through the resistor R42.
Preferably, the main signal secondary amplifying circuit is electrically connected to the AD electronic sampling control switch 2, and the input end of the AD electronic sampling control switch 1 is further connected to the anti-interference unit connected in parallel to the RGB light intensity feedback circuit.
Preferably, the system further comprises a human-computer interface circuit electrically connected with the processor module, and the human-computer interface circuit is electrically connected with the power supply module.
According to the intelligent RGB digital color sensor circuit system, whether an external detection head signal circuit is connected or not in the detection sensor circuit or whether the external detection head is connected is determined through the detection signal selection unit, a detection mode is further selected, the amplification factor is adjusted according to the detection mode determined by automatic detection of the sensor, the influence of human factors in sensor detection is reduced, and the detection precision is improved.
Furthermore, the sampling unit controls the sampling time of the signal output by the RGB light intensity feedback circuit and the main detection signal, so that the effectiveness of sampling data is improved, and the detection precision of the sensor is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a system block diagram of the intelligent RGB digital color sensor circuitry of the present application;
FIG. 2 is a schematic diagram of the architecture of the processor module of FIG. 1 according to the present application;
FIG. 3 is a schematic circuit diagram of the input/output module of FIG. 1 according to the present application;
FIG. 4 is a schematic circuit diagram of the RGB light source control module of FIG. 1 according to the present application;
FIG. 5 is a schematic circuit diagram of the signal processing module of FIG. 1 according to the present application;
FIG. 6 is a schematic circuit diagram of the RGB light intensity feedback circuit of FIG. 1 according to the present application;
FIG. 7 is a schematic circuit diagram of the detection signal selection unit of FIG. 1 according to the present application;
FIG. 8 is a schematic circuit diagram of the external detector voltage control circuit of FIG. 1 according to the present application;
FIG. 9 is a schematic circuit diagram of the external input circuit of FIG. 1 of the present application;
FIG. 10 is a schematic circuit diagram of the sampling unit of FIG. 1 according to the present application;
FIG. 11 is a schematic circuit diagram of a human-machine interface circuit of the circuit system of the intelligent RGB digital color sensor of the present application;
fig. 12 is a schematic circuit diagram of an external detection head signal circuit in an embodiment of the present application.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example (b): referring to fig. 1, an intelligent RGB digital color sensor circuit system includes a processor module, an input/output module, an RGB light source control module, a signal processing module, and a power supply module for supplying power to the above modules, where the input/output module, the RGB light source control module, and the signal processing module are respectively electrically connected to the processor module. Referring to fig. 2, a processor module selects any 32-bit high-speed processor in the prior art, selects STM32F103RET6, and has a package mode of TQFP64A _ P050L10W10, during the operation of the sensor, an RGB light source control module adjusts light sources as required, a signal processing module samples colors in illumination, and transmits the sampled and processed data to the processor module for output through an input and output module.
The input/output module may be any one of input/output circuits in the technical field, preferably, a four-way output control circuit is adopted in this embodiment, as shown in fig. 3, in the circuit, a transistor Q9, a transistor Q10, a transistor Q7, a transistor Q8, a transistor Q9, a transistor Q10, a transistor Q7, and a transistor Q8 are provided, in addition, collectors of the transistor Q9, the transistor Q10, the transistor Q7, and the transistor Q8 are respectively connected with the power supply module, bases of the transistor Q9, the transistor Q10, the transistor Q7, and the transistor Q8 are respectively connected with a pin 43, a pin 32, a pin 45, and a pin 44 of an STM32F103RET6, and a node of the transistor Q9, the transistor Q10, a transistor Q7, and a node where the transistor Q8 is connected in parallel with a pin 10 of the STM32F103RET 6.
In this embodiment, as shown in fig. 4, the terminals PWMG, PWMB, PWMR, LED-GO, LED-BO, and LED-RO of the RGB light source control module are respectively connected to the pin 37, the pin 39, the pin 38, the pin 36, the pin 41, and the pin 40 of the STM32F103RET 6. The brightness of the light is adjusted by adjusting the parameters of the triodes in the RGB light source control circuit.
Specifically, the signal processing module comprises an RGB light intensity feedback circuit, a sampling unit electrically connected with the output end of the RGB light intensity feedback circuit, and a detection signal selection unit electrically connected with the input end of the sampling unit. The RGB light intensity feedback circuit can be any light intensity feedback circuit in the prior art, and has the functions of feeding back the RGB light brightness to the 32-bit high-speed processor when the RGB light brightness is attenuated, and automatically adjusting the gain after the 32-bit high-speed processing to brighten the light brightness a little. Referring to fig. 5 and 6, it is characterized in that: the RGB light intensity feedback circuit is provided with a photosensitive sensor RX with an earthed emitter and an amplifier IC with an inverting input end electrically connected with a collector of the photoelectric receiving tube RX and a non-inverting input end electrically connected with the emitter of the photoelectric receiving tube RX, and an optical signal detected by the photoelectric receiving tube RX is subjected to signal amplification through the amplifier IC. The detection head of color sensor is divided into two kinds, and the optic fibre type detects the head and the optic fibre + circuit type detects the head promptly, and the optic fibre type detects the head and does not have detection circuitry, and the optic fibre + circuit type detects the head and has detection circuitry certainly, detects in two kinds of detection heads can all insert the detection circuitry in this embodiment.
As a preferred implementation manner of this embodiment, referring to fig. 7, the detection signal selection unit includes a host internal detection head signal circuit, an external detection head signal circuit, and a signal amplification circuit electrically connected to the output terminal of the host internal detection head signal circuit and the output terminal of the external detection head signal circuit. The host internal detector signal circuit comprises a photoelectric receiving tube RX and an amplifier OP2, wherein an inverting input end of the photoelectric receiving tube RX is electrically connected with the anode of the photoelectric receiving tube RX, a non-inverting input end of the photoelectric receiving tube RX is electrically connected with resistors (R28 and R29), and the voltage division generated by the resistors (R28 and R29) is the reference voltage of the amplifier OP 2. The external detection head signal circuit is electrically connected with the processor module through a resistor R32 and is electrically connected with the input end of the signal amplification circuit through a resistor R31. Referring to fig. 5 and 7, the circuit connecting point ESI1 is connected to an external detector signal circuit, and is connected to signal selection electronic switches SW3 and SW4 through a resistor R31; the connection point AD1A is connected with STM32F103RET 6's pin 15, is connected with 32 high-speed treater through AD1A, can detect and discern that the external detection head has or not to connect well, when connecing the external detection head, 32 high-speed treater preferred selection external detection head signal samples to cut off the transmission and the sampling of inside detection head signal.
Referring to fig. 8 and 12, the input terminal of the external detection head signal circuit is connected to an external detection head voltage control circuit electrically connected to the processor module, the external detection head voltage control circuit includes a composite transistor Q12, a composite transistor Q13, and a composite transistor Q14, the composite transistor Q12 and/or the composite transistor Q13 and/or the composite transistor Q14 are two NPN transistors connected to each other, and when the input terminals of the two NPN transistors both input a low level, the output is a high level, and when one or two input high levels exist, the output is a low level. In this embodiment, the external detection head signal circuit is connected with 3 pairs of NPN triodes connected to each other, wherein an input end and an output end of one pair of NPN triodes Q13 are respectively led out to be connected with input ends of the other two pairs of NPN triodes Q12 and Q14, an input end of the NPN triode Q13 is connected with the pin 11 and the pin 14 of the STM32F103RET6, output ends of the NPN triode Q12 and the NPN triode Q14 are connected with the external input circuit, referring to fig. 9, a pair of NPN triodes 15 is provided in the external input circuit, a base set of the NPN triode 15 is connected with the power module for supplying power, and two collectors of the NPN triode 15 are respectively connected with the pins 58 and 59 of the STM32F103RET 6.
In this embodiment, referring back to fig. 7, selective electronic switches are connected between the output terminal of the host internal test header signal circuit, the output terminal of the external test header signal circuit and the signal amplifying circuit, the host internal test header signal circuit is connected to the selective electronic switches through the output terminal of the amplifier OP2, and the external test header signal circuit is electrically connected to the selective electronic switches through the resistor R31 and the filter capacitor C30. The selection electronic switch is connected to pins 23 and 24 of STM32F103RET 6. When the 32-bit high-speed processor receives signals, the processor controls the electronic switch to select, if the external detection head is detected to be connected, the transmission and sampling of the internal detection signals are cut off, and the external signals are preferentially selected to enter the next-stage circuit.
As a preferable mode of the above embodiment, the signal amplification circuit includes a main signal secondary amplification circuit having an output terminal electrically connected to the sampling unit, and an amplification factor switching electronic switch electrically connected to an input terminal of the main signal secondary amplification circuit, the amplification factor switching electronic switch is connected to the output terminal of the host internal detection head signal circuit and the external detection head signal circuit through a selection electronic switch, and the amplification factor switching electronic switch is connected to the pin 22 of the STM32F103RET 6. The internal or external detection head is selected and determined to be connected into the detection circuit through the selection of the electronic switch, and when the external detection head is connected, the processor module cuts off the signal sampling of the internal detection head and selects the signal of the external detection head for sampling. The amplification factor of the amplifier is adjusted by controlling the amplification factor switching electronic switch through the 32-bit high-speed processor, so that the detection automation of the sensor is realized, the influence of human factors is avoided, and the detection precision is improved. The magnification change-over switch is controlled by a 32-bit high-speed processor, the detection modes are different, different magnification factors are selected, for example, when objects with weak reflection, such as black, are detected, the high magnification factor is selected, and when objects with strong reflection, such as a white light lamp, are detected, the low magnification factor is selected.
An anti-interference unit is connected between the output end of the main signal secondary amplification circuit and the sampling unit, and the anti-interference unit is a Schottky diode. By utilizing the characteristic of the Schottky diode, the peak interference generated in the sampling process of the main signal secondary amplification circuit by the sampling unit is avoided, and the data accuracy of signal sampling is improved.
As a preferred implementation manner of this embodiment, referring to fig. 10, the sampling unit includes an AD electronic sampling control switch 1 and an AD electronic sampling control switch 2 connected in parallel, and the AD electronic sampling control switch 1 and the D electronic sampling control switch 2 are electrically connected to the processor module respectively for signal transmission. Lead wires on a node where the AD electronic sampling control switch 1 and the AD electronic sampling control switch 2 are connected in parallel are connected with a pin 20 and a pin 21 of STM32F103RET6, and a 32-bit high-speed processor controls the electronic sampling control switch. The input end of the AD electronic sampling control switch 1 is electrically connected with the RGB light intensity feedback circuit, and the input end of the AD electronic sampling control switch 2 is electrically connected with the output end of the detection signal selection unit. One end of the AD electronic sampling control switch 1 is connected to the pin 16 of the STM32F103RET6, and one end of the AD electronic sampling control switch 2 is connected to the pin 17 of the STM32F103RET 6.
The output end of the AD electronic sampling control switch 1 is connected with a resistor R41 and is electrically connected with the processor module through a resistor R41, and the output end of the AD electronic sampling control switch 2 is connected with a resistor R42 and is electrically connected with the processor module through a resistor R42. The resistor R41 and the resistor R42 are used for matching with output signals ADSW1 and ADSW2 of the single chip microcomputer, and the electric potential is pulled low when the single chip microcomputer does not output signals. As shown in fig. 10, the other ends of the resistor R41 and the resistor R42 are grounded, the output terminal of the AD electronic sampling control switch 1 and the resistor R41 are electrically connected to the processor module through a wire for controlling the sampling time of the RGB light intensity feedback circuit, and the output terminal of the AD electronic sampling control switch 2 and the resistor R42 are electrically connected to the processor module through a wire for controlling the sampling time of the main detection signal.
In this embodiment, the main signal secondary amplifying circuit is electrically connected to the AD electronic sampling control switch 2, and the input terminal of the AD electronic sampling control switch 1 is further connected to an anti-interference unit (schottky diode) connected in parallel to the RGB light intensity feedback circuit.
The system further includes a human-machine interface circuit electrically connected to the processor module, as shown in fig. 11, the human-machine interface circuit being electrically connected to the power module. The human interface circuit may be any of those commonly used in the art.
The working principle is as follows: the RGB light intensity feedback circuit detects the light intensity of the detected object in real time, and when the light intensity is weakened, illumination compensation is carried out through the 32-bit high-speed processor, and the light brightness is adjusted in real time. During the detection process, a 32-bit high-speed processor controls the sampling time. When the detection head is connected with the sensor detection circuit, the 32-bit high-speed processor detects a signal source circuit (a host internal detection head signal circuit and an external detection head signal circuit), namely, whether the external detection head is connected is judged, the selection electronic switch selects a detection mode according to the judgment result of the signal source circuit, and when the external detection head is connected, the external signal is preferentially selected to enter the next stage circuit. In the working process, the amplification factor switching electronic switch switches the amplification factor according to the detection mode determined by the selection electronic switch, when the strong reflection intensity of the detected object is detected, the low amplification factor is selected for signal amplification, and when the weak reflection intensity of the detected object is detected, the high amplification factor is selected for signal amplification. After the signals are amplified, AD signal analog-to-digital conversion is carried out through an AD sampling electronic control switch, and finally the converted data signals are transmitted to a 32-bit high-speed processor, and a human-computer interface circuit displays a detection result.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an intelligent RGB digital color sensor circuit system, includes processor module, input/output module, RGB light source control module, signal processing module and for the power module of above-mentioned each module power supply, input/output module RGB light source control module signal processing module respectively with processor module electric connection, its characterized in that, signal processing module include RGB light intensity feedback circuit, with RGB light intensity feedback circuit output electric connection's sampling unit, with sampling unit input electric connection's detected signal selection unit.
2. The intelligent RGB digital color sensor circuit system of claim 1, wherein the detection signal selection unit includes a host internal detector signal circuit, an external detector signal circuit, and a signal amplification circuit electrically connected to the output of the host internal detector signal circuit and the output of the external detector signal circuit, the host internal detector signal circuit includes a photo-receiving tube RX and an amplifier OP2 having an inverting input electrically connected to the positive electrode of the photo-receiving tube RX and a non-inverting input electrically connected to a resistor (R28, R29), the voltage division generated by the resistor (R28, R29) is a reference voltage of the amplifier OP2, the amplifier OP2 is electrically connected to the input of the signal amplification circuit, the external detector signal circuit is electrically connected to the processor module through the resistor R32, The input end of the signal amplifying circuit is electrically connected with the resistor R31.
3. The intelligent RGB digital color sensor circuit system of claim 2, wherein the external detector head signal circuit has an input terminal connected to an external detector head voltage control circuit electrically connected to the processor module, the external detector head voltage control circuit includes a composite transistor Q12, a composite transistor Q13, and a composite transistor Q14, the composite transistor Q12 and/or the composite transistor Q13 and/or the composite transistor Q14 are two NPN transistors connected to each other, and the output is high when the input terminals of the two NPN transistors are both low, and the output is low when one or both of the input terminals of the two NPN transistors are high.
4. The intelligent RGB digital color sensor circuit system of claim 2 or 3, wherein a selection electronic switch is connected between the output terminal of the host internal detector signal circuit, the output terminal of the external detector signal circuit and the signal amplification circuit, the host internal detector signal circuit is connected to the selection electronic switch through the output terminal of the amplifier OP2, and the external detector signal circuit is electrically connected to the selection electronic switch through the resistor R31 and the filter capacitor C30.
5. The intelligent RGB digital color sensor circuit system of claim 4, wherein the signal amplification circuit includes a main signal secondary amplification circuit having an output electrically connected to the sampling unit, and an amplification switching electronic switch electrically connected to an input of the main signal secondary amplification circuit, the amplification switching electronic switch being connected to the output of the main internal detection head signal circuit and the external detection head signal circuit through a selection electronic switch, and when the external detection head is connected, the processor module cuts off the internal detection head signal sampling and selects the external detection head signal for sampling.
6. The intelligent RGB digital color sensor circuit system of claim 5, wherein an anti-interference unit is connected between the output terminal of the main signal secondary amplifying circuit and the sampling unit, the anti-interference unit being a schottky diode.
7. The circuit system according to claim 1, wherein the sampling unit comprises an AD electronic sampling control switch 1 and an AD electronic sampling control switch 2, the AD electronic sampling control switch 1 and the AD electronic sampling control switch 2 are connected in parallel, the AD electronic sampling control switch 1 and the AD electronic sampling control switch 2 are respectively electrically connected to the processor module for signal transmission, an input terminal of the AD electronic sampling control switch 1 is electrically connected to the RGB light intensity feedback circuit, and an input terminal of the AD electronic sampling control switch 2 is electrically connected to an output terminal of the detection signal selection unit.
8. The intelligent RGB digital color sensor circuit system of claim 7, wherein the output terminal of the AD electronic sampling control switch 1 is connected to a resistor R41 and electrically connected to the processor module through the resistor R41, and the output terminal of the AD electronic sampling control switch 2 is connected to a resistor R42 and electrically connected to the processor module through the resistor R42.
9. The circuit system of claim 6, 7 or 8, wherein the primary signal secondary amplifying circuit is electrically connected to the AD electronic sampling control switch 2, and the input terminal of the AD electronic sampling control switch 1 is further connected to the anti-interference unit connected in parallel to the RGB light intensity feedback circuit.
10. The intelligent RGB digital color sensor circuit system of claim 1, further comprising a human interface circuit electrically connected to the processor module, the human interface circuit being electrically connected to the power module.
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| CN201910522302.8A CN112097910A (en) | 2019-06-17 | 2019-06-17 | Intelligent RGB digital color sensor circuit system |
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