Calibration device of photoelectric sensor

Abstract

According to the calibration device of the photoelectric sensor provided by the utility model, the LED module luminous cover is directly placed above the photoelectric sensor of a tested product by adopting a black silica gel cover mode, so that complete shading can be realized, and light emitted by the LED module can be completely shielded in the light cover, thereby canceling calibration in a darkroom. The device is controlled by a single-chip microcomputer, an operator can directly issue a command and set current parameters of different sizes through a computer, the control device outputs currents of different grades, the LED module is driven to emit light intensity of different grades to irradiate a photoelectric sensor of a calibrated product, and the output voltage of the photoelectric sensor is verified to be compared with a standard value. And then the compensation value is solidified into the product through software. And the compensation value of the calibrated product is generally imbedded through a computer, and a matched program can be continuously developed for automatic calibration and automatic implantation of the compensation value of the calibrated product. The device adopts a miniaturized design, so that the field space occupied by calibration is saved, and the calibration efficiency is greatly improved.

Description

Technical Field

[0001] The utility model mainly relates to the field of photoelectric sensor calibration, and in particular to a photoelectric sensor calibration device. Background Art

[0002] With the development of optoelectronic technology, photoelectric sensors are widely used in various industries, such as smart home appliances such as speakers and air conditioners, as well as smart cars. Due to the limitations of existing semiconductor processes, the photoelectric parameter indicators of photoelectric sensors cannot be guaranteed to be completely consistent. Therefore, during the production stage of products using photoelectric sensors, it is necessary to calibrate the photoelectric sensors to compensate for the error value; the sampling of the ambient light intensity is more accurate, so that when users use the product, the slight changes in the ambient light intensity can be responded to in time. In order to improve the efficiency of photoelectric sensor production and calibration, it is necessary to adopt miniaturized and convenient operating tooling. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a calibration device for a photoelectric sensor, which solves the problem that the production and calibration of the existing photoelectric sensors are complicated and some even require calibration operations in a darkroom.

[0004] The utility model discloses a calibration device for a photoelectric sensor through an embodiment, including: a DC power supply, a power conversion module, a single-chip microcomputer, a USB interface module, a display module, a controllable constant current output module, a constant current output interface and an LED module light-emitting cover. Among them, the output interface of the DC power supply is connected to the input interface of the power conversion module; the power conversion module supplies power to the single-chip microcomputer, the USB interface module and the display module; the output interface of the DC power supply is also connected to the input interface of the controllable constant current output module to provide power to the controllable constant current output module; when in use, the USB interface of the USB interface module can be interconnected with a computer, and the computer controls the single-chip microcomputer to output different voltages through relevant software to control the controllable constant current output module to perform current size adjustment operations. The first output interface of the single-chip microcomputer is connected to the control interface of the controllable constant current output module to control the size of the output current of the controllable constant current output module. The single-chip microcomputer is connected to the USB interface module to control the output of the single-chip microcomputer through the USB interface module; the second output interface of the single-chip microcomputer is connected to the input interface of the display module to display the output current size. The output of the controllable constant current output module is connected to the constant current output interface, and the constant current output interface is connected to the input interface of the LED module light cover.

[0005] Furthermore, the DC power supply includes a power supply that converts 220V AC to 0-35V DC voltage.

[0006] Furthermore, the power conversion module is composed of LM2596HV, BL1117-33CX and peripheral circuits, and converts the voltage output by the DC power supply into a DC voltage of 5V or 3.3V for use by the single-chip microcomputer, USB interface module and display module.

[0007] Furthermore, the single chip microcomputer is a single chip microcomputer of STM32 series.

[0008] Furthermore, the USB interface module is composed of CH340G and peripheral circuits, and can be interconnected with the USB2.0 and USB3.0 interfaces of the computer.

[0009] Furthermore, the display module is composed of an OLED display screen and peripheral circuits.

[0010] Furthermore, the controllable constant current output module is composed of LT3092EDD and peripheral circuits, the SET pin of LT3092EDD is connected to the DAC pin of the single-chip microcomputer, and the single-chip microcomputer outputs voltages of different magnitudes to control the LT3092EDD to output currents of different magnitudes.

[0011] Furthermore, the constant current output interface is a two-core socket with positive and negative poles.

[0012] Furthermore, the LED module light-emitting cover is composed of a black silicone cover and an LED light-emitting module; the LED light-emitting module is an LED light-emitting diode module, and the black silicone cover is a black, opaque, and hollow hemisphere in the middle; the LED light-emitting module is placed at the center top inside the silicone cover.

[0013] The technical principle of the utility model is: the whole device uses a DC power supply to reduce the voltage of the 220V AC power supply for the first time, and then reduces it to a lower voltage through the power conversion module to power the single-chip microcomputer. When in use, the USB interface of the USB interface module is connected to the computer. The computer controls the single-chip microcomputer to output different voltages through relevant software and then controls the controllable constant current output module to adjust the current size. The display module is used to display the current size output by the controllable constant current output module. The output current of the controllable constant current output module supplies power to the LED module light cover.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the LED module light cover is placed above the photoelectric sensor of the calibrated product, and then connected to the computer through a USB cable. The operator sets the current parameters of different sizes through the relevant software, and the control device outputs different levels of current, drives the LED module to emit different levels of light intensity to illuminate the photoelectric sensor of the calibrated product, verifies the output voltage of the photoelectric sensor and compares it with the standard value, and then solidifies the compensation value into the product through the software. The device uses a black silicone cover to directly place the LED module light cover above the photoelectric sensor of the measured product, which can completely block light and completely shield the light emitted by the LED module in the light cover, thereby eliminating calibration in a dark room. The device uses a single-chip microcomputer control, and the operator can directly issue commands through the computer. The compensation value of the calibrated product is generally also inserted through the computer, and the supporting program can be further developed to perform automatic calibration and automatic implantation of the compensation value of the calibrated product. The device adopts a miniaturized design, which saves the space occupied by the calibration site and greatly improves the calibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the utility model and facilitate further understanding of the technical effects, technical features and purposes of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The accompanying drawings constitute an essential part of the specification and are used together with the embodiments of the utility model to illustrate the technical solution of the utility model, but do not constitute a limitation to the utility model.

[0016] Figure 1 This is a schematic diagram of the connection of various modules in the calibration device of the photoelectric sensor in the utility model;

[0017] Figure 2 This is a circuit schematic diagram of the calibration device for the photoelectric sensor in the utility model;

[0018] Figure 3 A physical schematic diagram of a calibration device for a photoelectric sensor in the utility model;

[0019] 1-LED module light cover. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described below are only for explaining the technical solution of the present invention, rather than for limiting the present invention. In addition, the parts described in the embodiments or drawings are only examples of the relevant parts of the present invention, rather than the entirety of the present invention. At the same time, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field should naturally belong to the protection scope of the present invention.

[0021] like Figure 1-3As shown, the utility model proposes a calibration device for a photoelectric sensor through the following embodiments, including: a DC power supply, a power conversion module, a single-chip microcomputer, a USB interface module, a display module, a controllable constant current output module, a constant current output interface and an LED module light-emitting cover 1. Among them, the output interface of the DC power supply is connected to the input interface of the power conversion module; the power conversion module supplies power to the single-chip microcomputer, the USB interface module and the display module; the output interface of the DC power supply is also connected to the input interface of the controllable constant current output module to provide power to the controllable constant current output module; when in use, the USB interface of the USB interface module can be interconnected with a computer, and the computer controls the single-chip microcomputer to output different voltages through relevant software to control the controllable constant current output module and perform current size adjustment operations. The first output interface of the single-chip microcomputer is connected to the control interface of the controllable constant current output module to control the size of the output current of the controllable constant current output module. The single-chip microcomputer is connected to the USB interface module to control the output of the single-chip microcomputer through the USB interface module; the second output interface of the single-chip microcomputer is connected to the input interface of the display module to display the output current size. The output of the controllable constant current output module is connected to the constant current output interface, and the constant current output interface is connected to the input interface of the LED module light emitting cover 1 .

[0022] In this embodiment, the DC power supply is a power supply that converts 220V AC to 0-35V DC voltage.

[0023] like Figure 2 As shown, in this embodiment, the power conversion module is composed of LM2596HV, BL1117-33CX and peripheral circuits, which converts the voltage output by the DC power supply into a DC voltage of 5V or 3.3V for use by the microcontroller, USB interface module and display module.

[0024] like Figure 2 As shown, in this embodiment, the single chip microcomputer is a single chip microcomputer of the STM32F103RCT6 model.

[0025] like Figure 2 As shown, in this embodiment, the USB interface module is composed of CH340G and peripheral circuits, and can be interconnected with the USB2.0 and USB3.0 interfaces of the computer.

[0026] In this embodiment, the display module is composed of an OLED display screen and peripheral circuits.

[0027] like Figure 2 As shown, in this embodiment, the controllable constant current output module is composed of LT3092EDD and peripheral circuits, the SET pin of LT3092EDD is connected to the DAC pin of the single-chip microcomputer, and the single-chip microcomputer outputs different voltages to control the LT3092EDD to output different currents.

[0028] In this embodiment, the constant current output interface is a two-core socket with positive and negative poles.

[0029] In this embodiment, the LED module light-emitting cover 1 is composed of a black silicone cover and an LED light-emitting module; the LED light-emitting module is an LED light-emitting diode module, and the black silicone cover is a black, opaque, and hollow hemisphere in the middle; the LED light-emitting module is placed at the center top inside the silicone cover.

[0030] It should be noted that the above embodiments are only for more clearly illustrating the technical solution of the present invention. Those skilled in the art will understand that the implementation methods of the present invention are not limited to the above contents, and obvious changes, replacements or substitutions based on the above contents do not exceed the scope covered by the technical solution of the present invention; other implementation methods will naturally fall within the scope of the present invention without departing from the concept of the present invention.

Claims

1. A calibration device for a photoelectric sensor, characterized in that: include: DC power supply, power conversion module, single chip microcomputer, USB interface module, display module, controllable constant current output module, constant current output interface and LED module light cover; The output interface of the DC power supply is connected to the input interface of the power conversion module; the power conversion module supplies power to the single-chip microcomputer, the USB interface module and the display module; the output interface of the DC power supply is also connected to the input interface of the controllable constant current output module to provide power to the controllable constant current output module; The first output interface of the single chip microcomputer is connected to the control interface of the controllable constant current output module, and is used to control the magnitude of the output current of the controllable constant current output module; The single-chip microcomputer is connected to the USB interface module, and is used to control the output of the single-chip microcomputer through the USB interface module; the second output interface of the single-chip microcomputer is connected to the input interface of the display module, and is used to display the output current; The output of the controllable constant current output module is connected to the constant current output interface, and the constant current output interface is connected to the input interface of the LED module light emitting cover.

2. A calibration device for a photoelectric sensor as claimed in claim 1, characterized in that: The DC power supply includes a power supply that converts 220V AC to 0-35V DC voltage.

3. A calibration device for a photoelectric sensor as claimed in claim 1, characterized in that: The power conversion module is composed of LM2596HV, BL1117-33CX and peripheral circuits, and converts the voltage output by the DC power supply into a DC voltage of 5V or 3.3V for use by the single-chip microcomputer, USB interface module and display module.

4. A calibration device for a photoelectric sensor as claimed in claim 1, characterized in that: The single chip microcomputer is a STM32 series single chip microcomputer.

5. The photoelectric sensor calibration device according to claim 1, characterized in that: The USB interface module is composed of CH340G and peripheral circuits, and can be interconnected with the USB2.0 and USB3.0 interfaces of a computer.

6. A calibration device for a photoelectric sensor as claimed in claim 1, characterized in that: The display module consists of an OLED display screen and peripheral circuits.

7. A calibration device for a photoelectric sensor as claimed in claim 1, characterized in that: The controllable constant current output module is composed of LT3092EDD and peripheral circuits. The SET pin of LT3092EDD is connected to the DAC pin of the single-chip microcomputer. The single-chip microcomputer outputs voltages of different magnitudes to control the LT3092EDD to output currents of different magnitudes.

8. A calibration device for a photoelectric sensor as claimed in claim 1, characterized in that: The constant current output interface is a two-core socket with positive and negative poles.

9. A calibration device for a photoelectric sensor as claimed in claim 1, characterized in that: The LED module light-emitting cover is composed of a black silicone cover and an LED light-emitting module; the LED light-emitting module is an LED light-emitting diode module, and the black silicone cover is a black, opaque, and hollow hemisphere in the middle; the LED light-emitting module is placed at the center top inside the silicone cover.

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