CN212645891U - Light intensity monitor - Google Patents
Light intensity monitor Download PDFInfo
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- CN212645891U CN212645891U CN202021041728.6U CN202021041728U CN212645891U CN 212645891 U CN212645891 U CN 212645891U CN 202021041728 U CN202021041728 U CN 202021041728U CN 212645891 U CN212645891 U CN 212645891U
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Abstract
The utility model discloses a light intensity monitor, including the watch-dog casing, be equipped with the anodal port of power on the watch-dog casing, the power negative pole port, illumination intensity signal input port, the voltage measurement port, be equipped with photoelectric conversion circuit in the watch-dog casing, supply circuit, what photoelectric conversion circuit adopted is 250R-LF photoelectric conversion chip, the anodal port of power, the power negative pole port passes through supply circuit and is connected with 250R-LF photoelectric conversion chip's power input end electricity, illumination intensity signal input port is connected with 250R-LF photoelectric conversion chip's signal input end electricity, the voltage measurement port is connected with 250R-LF photoelectric conversion chip's signal output end electricity. The utility model discloses not only can satisfy the requirement of CISPR anechoic chamber test standard, the illumination intensity of control article that can be more directly perceived simultaneously. The utility model discloses can improve EMC test accuracy, more make things convenient for ground can acquire the data that article illumination intensity changes.
Description
Technical Field
The utility model relates to a light intensity control technical field, concretely relates to light intensity monitor.
Background
In the EMC test, the irradiance change of the light-emitting article is monitored, the existing known method is that a high-definition camera is utilized to be directly monitored by naked eyes of a tester, when the irradiance change is changed, the change of the illumination intensity is difficult to distinguish by the naked eyes of the tester.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a can improve EMC test accuracy, the light intensity watch-dog of the illumination intensity of control article more directly perceived.
The technical scheme of the utility model as follows:
the utility model provides a light intensity monitor, includes the watch-dog casing, be equipped with positive port of power, power negative pole port, illumination intensity signal input port, voltage measurement port on the watch-dog casing, be equipped with photoelectric conversion circuit, supply circuit in the watch-dog casing, what photoelectric conversion circuit adopted is 250R-LF photoelectric conversion chip, positive port of power, power negative pole port pass through supply circuit with the power input end electricity of 250R-LF photoelectric conversion chip is connected, illumination intensity signal input port with the signal input part electricity of 250R-LF photoelectric conversion chip is connected, the voltage measurement port with the signal output part electricity of 250R-LF photoelectric conversion chip is connected.
Further, the voltage measurement port includes signal of telecommunication output port and signal ground electric source port, the positive port of power passes through supply circuit with the power input end electricity of 250R-LF photoelectric conversion chip is connected, the negative port of power passes through supply circuit with signal ground electric source port electricity is connected, 250R-LF photoelectric conversion chip is equipped with two signal output, respectively with signal of telecommunication output port and signal ground electric source port electricity are connected.
Further, photoelectric conversion circuit is equipped with two converting circuit, and it has adopted two 250R-LF photoelectric conversion chips, is first 250R-LF photoelectric conversion chip and second 250R-LF photoelectric conversion chip respectively, illumination intensity signal input port includes first illumination intensity signal input port and second illumination intensity signal input port, first illumination intensity signal input port with the signal input part electricity of first 250R-LF photoelectric conversion chip is connected, second illumination intensity signal input port with the signal input part electricity of second 250R-LF photoelectric conversion chip is connected, the voltage measurement port includes first signal of telecommunication output port, second signal of telecommunication output port and signal ground electric source port, the positive port of power supply pass through power supply circuit respectively with the power input LF of first 250R-LF photoelectric conversion chip and second 250R-LF photoelectric conversion chip The end is connected electrically, the power negative pole port pass through supply circuit with signal ground electric source port electricity is connected, first 250R-LF photoelectric conversion chip and second 250R-LF photoelectric conversion chip all are equipped with two signal output part, two signal output part of first 250R-LF photoelectric conversion chip respectively with first signal of telecommunication output port and signal ground electric source port electricity are connected, two signal output part of second 250R-LF photoelectric conversion chip respectively with second signal of telecommunication output port and signal ground electric source port electricity are connected.
Furthermore, the illumination intensity signal input port introduces an illumination intensity signal by using an optical fiber.
Furthermore, the power supply voltage range of the photoelectric conversion circuit is 9-35V direct current voltage.
Furthermore, the power supply circuit is a three-terminal voltage-stabilizing integrated circuit.
Furthermore, the power supply circuit adopts a 7805 voltage-stabilizing power supply chip packaged by a TO-220 standard.
Further, the power supply circuit supplies power to a direct current voltage of 12V.
Furthermore, a power switch is further arranged on the monitor shell and electrically connected between the positive port of the power supply and the power supply circuit.
Further, an LED indicating lamp is further arranged on the monitor shell and electrically connected among the power switch, the power supply circuit and the power supply negative electrode port.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses not only can satisfy the requirement of CISPR anechoic chamber test standard, the illumination intensity of control article that can be more directly perceived simultaneously plays when article illumination intensity changes, and the effect that the tester utilized the electric energy to look over the device and can discover illumination intensity change fast. The utility model discloses can improve EMC test accuracy, more make things convenient for ground can acquire the data that article illumination intensity changes.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a perspective view of a light intensity monitor according to an embodiment of the present invention;
fig. 2 is a second three-dimensional structure diagram of a light intensity monitor according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of a light intensity monitor according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a light intensity monitor according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
Examples
Referring to fig. 1 to 3, an embodiment of the present invention provides a light intensity monitor, including a monitor housing 1, a power positive port 2, a power negative port 3, a light intensity signal input port 4, a voltage measurement port 5, a power switch 6 and an LED indicator light 7 are disposed on the monitor housing 1, a photoelectric conversion circuit 8 and a power supply circuit 9 are disposed in the monitor housing 1, the photoelectric conversion circuit 8 employs a 250R-LF photoelectric conversion chip, the power positive port 2 and the power negative port 3 are electrically connected to a power input end of the 250R-LF photoelectric conversion chip through the power supply circuit 9, the light intensity signal input port 4 is electrically connected to a signal input end of the 250R-LF photoelectric conversion chip, the voltage measurement port 5 is electrically connected to a signal output end of the 250R-LF photoelectric conversion chip, the power switch 6 is electrically connected between the power positive port 2 and the power supply circuit 9, the LED indicator light 7 is electrically connected among the power switch 6, the power supply circuit 9 and the power supply negative electrode port 3.
The voltage measurement port 5 includes an electrical signal output port 51 and a signal ground power port 52, the positive power port 2 is electrically connected to the power input end of the 250R-LF photoelectric conversion chip through the power supply circuit 9, the negative power port 3 is electrically connected to the signal ground power port 52 through the power supply circuit 9, and the 250R-LF photoelectric conversion chip is provided with two signal output ends which are electrically connected to the electrical signal output port 51 and the signal ground power port 52, respectively.
In this embodiment, as shown in fig. 4, the photoelectric conversion circuit 8 is provided with two conversion circuits, which adopt two 250R-LF photoelectric conversion chips, namely a first 250R-LF photoelectric conversion chip and a second 250R-LF photoelectric conversion chip, the illumination intensity signal INPUT port 4 includes a first illumination intensity signal INPUT port CH1(INPUT) and a second illumination intensity signal INPUT port CH2(INPUT), the first illumination intensity signal INPUT port CH1(INPUT) is electrically connected to the signal INPUT terminal of the first 250R-LF photoelectric conversion chip, the second illumination intensity signal INPUT port CH2(INPUT) is electrically connected to the signal INPUT terminal of the second 250R-LF photoelectric conversion chip, the voltage measurement port 5 includes a first electrical signal OUTPUT port CH1(OUTPUT), a second electrical signal OUTPUT port CH2(OUTPUT) and a gnd signal ground port (com), the power supply positive electrode port 2 is electrically connected with power supply input ends of the first 250R-LF photoelectric conversion chip and the second 250R-LF photoelectric conversion chip respectively through the power supply circuit 9, the power supply negative electrode port 3 is electrically connected with a signal ground power supply port COM (GND) through the power supply circuit 9, the first 250R-LF photoelectric conversion chip and the second 250R-LF photoelectric conversion chip are respectively provided with two signal OUTPUT ends, the two signal OUTPUT ends of the first 250R-LF photoelectric conversion chip are respectively and electrically connected with a first electric signal OUTPUT port CH1(OUTPUT) and a signal ground power supply port COM (GND), and the two signal OUTPUT ends of the second 250R-LF photoelectric conversion chip are respectively and electrically connected with a second electric signal OUTPUT port CH2(OUTPUT) and a signal ground power supply port COM (GND). The electrical signal OUTPUT adopts a two-channel OUTPUT design, and a power viewing device (such as an oscilloscope) is connected to the first electrical signal OUTPUT port CH1(OUTPUT) and the signal ground power supply port COM (GND) or the second electrical signal OUTPUT port CH2(OUTPUT) and the signal ground power supply port COM (GND), so that a voltage signal can be measured, the voltage signal is obtained by sampling from an optical fiber line and converting into an optical signal through an internal circuit, and the OUTPUT voltage is in direct proportion to the illumination intensity (irradiance).
The first illumination intensity signal INPUT port CH1(INPUT) and the second illumination intensity signal INPUT port CH2(INPUT) are used for inputting illumination intensity signals of two channels, the optical fibers are used for introducing the illumination intensity signals, the optical fibers can lead out the optical signals in the anechoic chamber, and the optical fiber type anechoic chamber has the advantages of low transmission loss, no electromagnetic radiation, strong electromagnetic interference resistance and the like, and meets the requirements of CISPR anechoic chamber standards.
The power supply voltage range of the photoelectric conversion circuit 8 is 9-35V direct current voltage.
The power supply circuit 9 is a three-terminal voltage-stabilizing integrated circuit, and adopts a TO-220 standard packaged 7805 voltage-stabilizing power supply chip. Has the advantages of thermal overload protection, short circuit protection and convenient use.
The power supply circuit 9 supplies power to 12V direct current voltage, and the power supply voltage range of the photoelectric conversion circuit 8 is 9-35V direct current voltage. After the power switch 6 is closed, the LED indicator light 7 is turned on, the 7805 voltage-stabilized power chip OUTPUTs 5V stable voltage to be supplied to the first 250R-LF photoelectric conversion chip/the second 250R-LF photoelectric conversion chip, when illumination is INPUT from the first illumination intensity signal INPUT port CH1 (INPUT)/the second illumination intensity signal INPUT port CH2(INPUT), the OUTPUT voltage of the first 250R-LF photoelectric conversion chip/the second 250R-LF photoelectric conversion chip is in direct proportion to the light intensity (irradiance), and the first electrical signal OUTPUT port CH1 (OUTPUT)/the second electrical signal OUTPUT port CH2(OUTPUT) OUTPUTs a corresponding voltage signal.
In conclusion, the light intensity monitor can meet the requirements of the CISPR anechoic chamber test standard, can monitor the illumination intensity of the object more visually, and has the effect that when the illumination intensity of the object changes, a tester can quickly find the change of the illumination intensity by using the electric energy checking device. So, can improve EMC test accuracy, more conveniently can acquire the data that article illumination intensity changes.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A light intensity monitor, characterized by: including the watch-dog casing, be equipped with anodal port of power, power negative pole port, illumination intensity signal input port, voltage measurement port on the watch-dog casing, be equipped with photoelectric conversion circuit, supply circuit in the watch-dog casing, what photoelectric conversion circuit adopted is 250R-LF photoelectric conversion chip, anodal port of power, power negative pole port pass through supply circuit with the power input end electricity of 250R-LF photoelectric conversion chip is connected, illumination intensity signal input port with the signal input part electricity of 250R-LF photoelectric conversion chip is connected, the voltage measurement port with the signal output part electricity of 250R-LF photoelectric conversion chip is connected.
2. A light intensity monitor according to claim 1, wherein: the voltage measurement port includes signal of telecommunication output port and signal ground electric source port, the positive port of power passes through supply circuit with the power input end electricity of 250R-LF photoelectric conversion chip is connected, the negative port of power passes through supply circuit with signal ground electric source port electricity is connected, 250R-LF photoelectric conversion chip is equipped with two signal output part, respectively with signal of telecommunication output port and signal ground electric source port electricity are connected.
3. A light intensity monitor according to claim 1, wherein: the photoelectric conversion circuit is provided with two conversion circuits, the two conversion circuits adopt two 250R-LF photoelectric conversion chips which are respectively a first 250R-LF photoelectric conversion chip and a second 250R-LF photoelectric conversion chip, the illumination intensity signal input port comprises a first illumination intensity signal input port and a second illumination intensity signal input port, the first illumination intensity signal input port is electrically connected with the signal input end of the first 250R-LF photoelectric conversion chip, the second illumination intensity signal input port is electrically connected with the signal input end of the second 250R-LF photoelectric conversion chip, the voltage measurement port comprises a first electric signal output port, a second electric signal output port and a signal ground port, and the positive power port is electrically connected with the power input ends of the first 250R-LF photoelectric conversion chip and the second 250R-LF photoelectric conversion chip respectively through the power supply circuit, the power negative pole port passes through supply circuit with signal ground electric source port electricity is connected, first 250R-LF photoelectric conversion chip and second 250R-LF photoelectric conversion chip all are equipped with two signal output part, two signal output part of first 250R-LF photoelectric conversion chip respectively with first signal of telecommunication output port and signal ground electric source port electricity are connected, two signal output part of second 250R-LF photoelectric conversion chip respectively with second signal of telecommunication output port and signal ground electric source port electricity are connected.
4. A light intensity monitor according to claim 1 or 3, wherein: the illumination intensity signal input port introduces an illumination intensity signal by adopting an optical fiber.
5. A light intensity monitor according to claim 1 or 3, wherein: the power supply voltage range of the photoelectric conversion circuit is 9-35V direct current voltage.
6. A light intensity monitor according to any one of claims 1 to 3, wherein: the power supply circuit is a three-terminal voltage-stabilizing integrated circuit.
7. An optical intensity monitor according to claim 6, wherein: the power supply circuit adopts a 7805 voltage-stabilizing power supply chip packaged by a TO-220 standard.
8. A light intensity monitor according to claim 7, wherein: the power supply circuit supplies power to 12V direct-current voltage.
9. A light intensity monitor according to claim 1, wherein: the monitor shell is also provided with a power switch, and the power switch is electrically connected between the positive port of the power supply and the power supply circuit.
10. A light intensity monitor according to claim 9, wherein: and the monitor shell is also provided with an LED indicating lamp which is electrically connected among the power switch, the power supply circuit and the power supply cathode port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021041728.6U CN212645891U (en) | 2020-06-08 | 2020-06-08 | Light intensity monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021041728.6U CN212645891U (en) | 2020-06-08 | 2020-06-08 | Light intensity monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212645891U true CN212645891U (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021041728.6U Active CN212645891U (en) | 2020-06-08 | 2020-06-08 | Light intensity monitor |
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|---|---|
| CN (1) | CN212645891U (en) |
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2020
- 2020-06-08 CN CN202021041728.6U patent/CN212645891U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A light intensity monitor Effective date of registration: 20220117 Granted publication date: 20210302 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Tianhe branch Pledgor: Guangzhou measurement and Testing Technology Co.,Ltd. Registration number: Y2022440000006 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |