CN218067586U

CN218067586U - Xenon lamp ultraviolet general type irradiation calibrator

Info

Publication number: CN218067586U
Application number: CN202220894996.5U
Authority: CN
Inventors: 黄宇敏; 解正坤
Original assignee: Biuged Precision Instrument Guangzhou Co ltd
Current assignee: Biuged Precision Instrument Guangzhou Co ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-12-16
Anticipated expiration: 2032-04-18

Abstract

The utility model provides a xenon lamp ultraviolet universal irradiation calibrator, which comprises an irradiation calibrator main body and a plurality of probes which are detachably connected with the irradiation calibrator main body and are used for measuring different wave bands; the irradiation calibrator main body comprises a signal multistage amplification processing circuit, an A/D converter, a microcontroller and a display screen, wherein the signal multistage amplification processing circuit, the A/D converter and the microcontroller are sequentially connected, and the microcontroller is connected with the display screen; the probe comprises a cosine corrector, an optical filter, a sensor and an information storage chip which are arranged on a probe body from top to bottom, and the sensor is connected with the information storage chip. The irradiation calibrator main part adopts signal multistage amplification processing circuit, can improve signal amplification processing performance, and then improves irradiance and handles the rate of accuracy.

Description

Xenon lamp ultraviolet general type irradiation calibrator

Technical Field

The disclosure relates to the technical field of measuring instruments, in particular to a xenon lamp ultraviolet universal irradiation calibrator.

Background

The radiation calibration instrument is a device for detecting light energy in a weathering chamber using a xenon lamp near the solar spectrum and highly destructive ultraviolet UV340 and UV313. Most of the existing irradiation calibration instruments only have a first-stage amplification circuit, so that the accuracy of detected signals needs to be improved.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a xenon lamp ultraviolet universal irradiation calibrator, which solves the technical problem that most of the existing irradiation calibrators recognized by the inventor only have a first-stage amplification circuit, so that the accuracy of detected signals needs to be improved.

The utility model provides a xenon lamp ultraviolet universal irradiation calibrator, which comprises an irradiation calibrator main body and a plurality of probes which are detachably connected with the irradiation calibrator main body and are used for measuring different wave bands; the irradiation calibrator main body comprises a signal multistage amplification processing circuit, an A/D converter, a microcontroller and a display screen, wherein the signal multistage amplification processing circuit, the A/D converter and the microcontroller are sequentially connected, and the microcontroller is connected with the display screen; the probe comprises a cosine corrector, an optical filter, a sensor and an information storage chip which are arranged on a probe body from top to bottom, and the sensor is connected with the information storage chip.

In any one of the above technical solutions, further, the irradiation calibrator main body further includes a built-in power supply and a battery management circuit, and the battery management circuit is connected to the built-in power supply.

In any one of the above technical solutions, further, the irradiation calibrator main body is further provided with a charging interface.

In any of the above technical solutions, further, the charging interface is a TPYE-C charging interface.

In any of the above technical solutions, further, the axes of the cosine corrector, the optical filter and the sensor are aligned.

In any of the above technical solutions, further, the sensor is a GaN sensor.

In any of the above technical solutions, further, the display screen is a high-definition touch display screen.

In any of the above technical solutions, further, the a/D converter is connected to the microcontroller through an I2C bus.

In any of the above technical solutions, further, the information storage chip is connected to the sensor through a connection line.

The beneficial effect of this disclosure mainly lies in:

1. the irradiation calibrator main part adopts signal multistage amplification processing circuit, can improve signal amplification processing performance, and then improves irradiance and handles the rate of accuracy.

2. The probe employs a cosine corrector for collecting light energy over a 180 solid angle, thereby eliminating optical coupling problems in other sampling devices due to light collection sampling geometry limitations.

It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and do not necessarily limit the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of an irradiation calibrator main body provided in an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a probe provided in an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a circuit structure of a radiation calibrator main body according to an embodiment of the present disclosure;

fig. 4 is a schematic block diagram of a xenon lamp ultraviolet universal irradiation calibrator provided in an embodiment of the present disclosure.

Icon:

1. irradiating the calibrator main body; 2. a display screen; 3. a battery holder; 4. a USB interface; 5. a charging interface; 6. a cosine corrector; 7. an information storage chip; 8. a built-in power supply; 9. a battery management circuit; 10. a signal multistage amplification circuit; 11. a microcontroller; 12. a charging circuit; 13. a switching circuit; 14. an A/D converter; 15. a USB connector; 16. a probe; 17. a filter; 18. a sensor.

Detailed Description

The technical solutions of the present disclosure will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present disclosure, but not all embodiments.

All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing and simplifying the present disclosure, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present disclosure, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

As shown in fig. 1-4, the present disclosure provides a xenon lamp ultraviolet universal irradiation calibrator, which includes an irradiation calibrator body 1 and a plurality of probes 16 detachably connected to the irradiation calibrator body 1 for measuring different wavelength bands; irradiation calibrator main part 1 includes signal multistage amplification processing circuit 10, AD converter 14, microcontroller 11, display screen 2, signal multistage amplification processing circuit 10, AD converter 14, microcontroller 11 connect gradually, and signal multistage amplification processing circuit 10 amplifies the signal that probe 16 transmission comes, and AD converting circuit converts the signal after multistage amplification into digital signal and transmits microcontroller 11, accessible I2C bus with microcontroller 11 connects. The microcontroller 11 converts the received signals into irradiance values and transmits the irradiance values to the display screen 2 for display; the specific numerical conversion procedure and the like are not practical improvements of the present application, and therefore, detailed description thereof is omitted. The probe 16 comprises a cosine corrector 6, an optical filter 17, a sensor 18 and an information storage chip 7 which are arranged on the main body of the probe 16 from top to bottom, the model of the information storage chip 7 is CAT24C02, and the sensor 18 is connected with the information storage chip 7.

The use of the cosine corrector 6 to collect light energy over a solid angle of 180 degrees eliminates optical coupling problems in other sampling devices due to light collection sampling geometry limitations. The filter 17 can filter out other energy in the undesired wavelength band and retain the energy in the desired wavelength band to be measured.

For the xenon lamp ultraviolet universal irradiation calibrator, the probe 16 is inserted and then automatically powered on, firstly, the controller of the irradiation calibrator main body 1 communicates with the information storage chip 7 of the probe 16 to obtain corresponding information, when a light source obtains and processes electric signals of corresponding wave bands through the cosine corrector 6, the optical filter 17 and the sensor 18, then the multi-stage signal amplification processing circuit 10, the A/D converter 14 and the microcontroller 11 in the irradiation calibrator main body 1 sequentially process transmission data, and finally the microcontroller 11 transmits the transmission data to the display screen 2 to carry out real-time irradiance of the wave bands. The probe 16 is placed in a xenon lamp or ultraviolet aging box, the probe 16 faces the xenon lamp or ultraviolet lamp tube and is positioned in the middle of the light source and at the position where the distance between the xenon lamp tube and the test plate is equal or close, and the numerical value displayed by the display screen 2 at the moment is the calibration value of the aging box.

Specifically, the signal multistage amplification processing circuit 10 is composed of a chip OPA2197, the a/D converter 14 is composed of a chip ADS1115, and the microcontroller 11 is composed of a single chip microcomputer STM32f407VET 6.

Optionally, the irradiation calibrator main body 1 further includes an internal power supply 8 and a battery management circuit 9, and the battery management circuit 9 is connected to the internal power supply 8. The battery management circuit 9 adopts a 5V-3.3V voltage stabilizing chip to convert the voltage of the built-in power supply 8 into 3.3V direct current voltage required by the microcontroller 11, meanwhile, the battery management circuit 9 also has a battery protection function, the built-in power supply 8 is a lithium battery, and the lithium battery is fixed in the irradiation calibrator main body 1 through the battery holder 3. By adopting the internal power supply 8, the problem that the application scene has limitation due to the external power supply of the existing irradiation calibration instrument can be solved.

Optionally, the irradiation calibrator body 1 is further provided with a charging interface 5. The charging interface 5 charges the internal power supply 8 through the charging circuit 12. Specifically, the charging interface 5 is a TPYE-C charging interface 5. In addition, the irradiation calibrator body 11 is further provided with a switch circuit 13 for controlling the power supply and the power failure of the built-in power supply 8.

Optionally, axes of the cosine corrector 6, the filter 17 and the sensor 18 are aligned, so that irradiance information can be conveniently captured. The sensor 18 may be a GaN sensor 18. The probe 16 and the sensor 18 adopt the GaN sensor 18, so that the sensitivity is higher, the visible light interference resistance is strong, the power consumption is low, and the service life is longer.

Optionally, the display screen 2 is a high-definition touch display screen 2, and the high-definition touch display screen 2 can realize human-computer interaction. Specifically, a 720p high-definition display touch screen can be adopted.

Optionally, the probe 16 may be detachably connected to the irradiation calibrator body 1 via the USB interface 4. Specifically, the information storage chip 7 is integrated on the USB connector 15, and the USB interface 4 is disposed on the irradiation calibrator body 1.

The beneficial effect of this disclosure mainly lies in:

1. the irradiation calibrator main body 1 adopts the signal multistage amplification processing circuit 10, and can improve the signal amplification processing performance, thereby improving the irradiance processing accuracy.

2. The probe 16 employs a cosine corrector 6 for collecting light energy over a solid angle of 180 deg., thereby eliminating optical coupling problems caused by light collection sampling geometry limitations in other sampling devices.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present disclosure, and not for limiting the same; while the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.

Claims

1. A xenon lamp ultraviolet universal type irradiation calibrator is characterized by comprising an irradiation calibrator main body and a plurality of probes which are detachably connected with the irradiation calibrator main body and are used for measuring different wave bands; the irradiation calibrator main body comprises a signal multistage amplification processing circuit, an A/D converter, a microcontroller and a display screen, wherein the signal multistage amplification processing circuit, the A/D converter and the microcontroller are sequentially connected, and the microcontroller is connected with the display screen; the probe comprises a cosine corrector, an optical filter, a sensor and an information storage chip which are arranged on a probe body from top to bottom, wherein the sensor is connected with the information storage chip.

2. The xenon lamp ultraviolet universal irradiation calibrator of claim 1, wherein the irradiation calibrator body further comprises a built-in power supply and a battery management circuit, the battery management circuit being connected to the built-in power supply.

3. The xenon lamp ultraviolet universal irradiation calibrator according to claim 2, wherein the irradiation calibrator body is further provided with a charging interface.

4. The xenon lamp ultraviolet universal irradiation calibrator of claim 3, wherein the charging interface is a TPYE-C charging interface.

5. The xenon lamp ultraviolet universal irradiation calibrator of claim 1, wherein the axes of the cosine corrector, the filter, and the sensor are aligned.

6. The xenon lamp ultraviolet universal irradiation calibrator of claim 1 or 5, wherein said sensor is a GaN sensor.

7. The xenon lamp ultraviolet universal irradiation calibrator of claim 1, wherein said display screen is a high definition touch display screen.

8. The xenon lamp ultraviolet universal irradiation calibrator of claim 1, wherein said a/D converter is connected to said microcontroller via an I2C bus.

9. The xenon lamp ultraviolet universal irradiation calibrator as recited in claim 1, wherein the information storage chip is connected to the sensor through a connection line.