CN212779562U - Infrared light intensity detector - Google Patents
Infrared light intensity detector Download PDFInfo
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- CN212779562U CN212779562U CN202022175168.XU CN202022175168U CN212779562U CN 212779562 U CN212779562 U CN 212779562U CN 202022175168 U CN202022175168 U CN 202022175168U CN 212779562 U CN212779562 U CN 212779562U
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Abstract
The utility model discloses an infrared light intensity detector, which comprises a photoelectric detection module, an operational amplifier and a processor which are connected in sequence; wherein, photoelectric detection module includes infrared receiving element and the gear control unit who is connected with infrared receiving element, and gear control unit includes at least two sets of parallel connection's gear control circuit, and gear control circuit includes relay, the gear resistance of being connected with relay normally open contact switch one end and the gear control key of being connected with relay control switch, and the gear resistance among every gear control circuit of group is different. The utility model discloses to the detection that the detection of detection device is waited to the different intelligent ammeter of infrared communication illumination intensity scope or other infrared, accessible gear control circuit select to come to detect the infrared light intensity of not ventilating illumination intensity scope, improve the accuracy that infrared illumination intensity detected.
Description
Technical Field
The utility model relates to an infrared light intensity detects technical field, especially relates to an infrared light intensity detector.
Background
The infrared light communication is a common communication mode between the existing intelligent electric energy meter and the outside, and particularly, the intelligent electric energy meter realizes communication with the outside in a mode of sending infrared light outwards and receiving returned infrared light.
The method for detecting the intensity of infrared light emitted by the intelligent electric energy meter is a mode for detecting the infrared communication capacity of the intelligent electric energy meter, various infrared measuring instruments exist in the market at present, but the infrared measuring instruments in the market at present are expensive in cost, complex in structure and inconvenient to carry. Meanwhile, the existing infrared measuring instrument has a limited range for detecting the intensity of infrared light, and flexible modulation in each range cannot be realized. Further most of existing infrared measuring instruments can only detect the infrared light intensity sent by the intelligent electric energy meter, and cannot detect the infrared light intensity received by the intelligent electric energy meter, so that the infrared communication capacity of the intelligent electric energy meter cannot be comprehensively detected, and the detection function is single.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that current infrared light intensity detecting instrument structure is complicated, and the cost is on the verge and expensive, and the function singleness, can't be comprehensive detect intelligent ammeter infrared communication ability.
In order to solve the technical problem, the utility model provides an infrared light intensity detector, which comprises a photoelectric detection module, an operational amplifier and a processor which are connected in sequence;
wherein, the photoelectric detection module include infrared receiving element and with the gear control unit that infrared receiving element connects, gear control unit includes at least two sets of parallel connection's gear control circuit, gear control circuit include the relay, with gear resistance that relay normally open contact switch one end is connected and with the gear control key that relay control switch connects, every group gear resistance among the gear control circuit is different.
Preferably, the infrared receiving unit is an infrared receiving diode, an output end of the infrared receiving diode is connected with an inverting input end of the operational amplifier, an input end of the infrared receiving diode is grounded, a positive phase input end of the operational amplifier is grounded, and an output end of the operational amplifier is connected with the other end of the normally open contact switch of the relay in each group of gear control circuits.
Preferably, the gear control circuit further comprises a control key protection resistor connected between the relay control switch and the gear control key.
Preferably, the infrared light intensity detector further comprises an infrared emission module connected with the processor, and the infrared emission module comprises an infrared light emitting diode.
Preferably, the infrared emission module further comprises a pulse width controller and a control switch, the pulse width controller and the control switch are sequentially connected with the input end of the infrared light emitting diode, the pulse width controller is connected with a pulse width modulation pin of the processor, the control switch is connected with the control pin of the processor, and the output end of the infrared light emitting diode is grounded.
Preferably, the pulse width controller is an NPN type triode, the control switch is a PNP type triode, a collector of the NPN type triode is connected to a power supply terminal through a first resistor, a base of the NPN type triode is connected to a pulse width modulation pin of the processor through a second resistor, an emitter of the NPN type triode is connected to an emitter of the PNP type triode, a base of the PNP type triode is connected to a control pin of the processor through a third resistor, and a collector of the PNP type triode is connected to an input terminal of the infrared light emitting diode.
Preferably, the processor comprises a processing module, and an analog-to-digital conversion module and a signal transmission module which are respectively connected with the processing module, wherein the analog-to-digital conversion module is connected with the operational amplifier, and the signal transmission module is in communication connection with an upper computer.
Preferably, the infrared light intensity detector further comprises a display connected with the processor to display the processing result of the processor.
Preferably, the pulse width modulation range of the processor is 0-2000 uw/cm2The precision of the pulse width modulation by the processor is 0.01uw/cm2。
Preferably, the gear control unit comprises five sets of gear control circuits connected in parallel.
Compared with the prior art, one or more embodiments in the above scheme can have the following advantages or beneficial effects:
use the embodiment of the utility model provides an infrared luminous intensity detector through set up multiunit gear control circuit in the photoelectric detection module, has enlarged the utility model discloses infrared luminous intensity detector's detection range, to the different intelligent ammeter of infrared communication illumination intensity range or other infrared detection device's that detect detection simultaneously, still can come to detect the infrared light intensity of not ventilating illumination intensity range through selecting of gear control circuit, improves the accuracy that infrared illumination intensity detected. Simultaneously the utility model discloses infrared luminous intensity detector still sets up infrared emission module, sets up the infrared light that appointed intensity can also be launched to this detector through the host computer, tests intelligent ammeter or other infrared receiving ability who waits to detect the device.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the description of embodiments of the invention, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural diagram of an infrared light intensity detector according to an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of an optoelectronic detection module and an operational amplifier in a first embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a mid-infrared emission module according to an embodiment of the present invention.
Detailed Description
The following detailed description will be made with reference to the accompanying drawings and examples, so as to solve the technical problems by applying technical means to the present invention, and to fully understand and implement the technical effects of the present invention. It should be noted that, as long as no conflict is formed, the embodiments and the features in the embodiments of the present invention may be combined with each other, and the technical solutions formed are all within the scope of the present invention.
The method for detecting the intensity of infrared light emitted by the intelligent electric energy meter is a mode for detecting the infrared communication capacity of the intelligent electric energy meter, various infrared measuring instruments exist in the market at present, but the infrared measuring instruments in the market at present are expensive in cost, complex in structure and inconvenient to carry. Meanwhile, the existing infrared measuring instrument has a limited range for detecting the intensity of infrared light, and flexible modulation in each range cannot be realized. Further most of existing infrared measuring instruments can only detect the infrared light intensity sent by the intelligent electric energy meter, and cannot detect the infrared light intensity received by the intelligent electric energy meter, so that the infrared communication capacity of the intelligent electric energy meter cannot be comprehensively detected, and the detection function is single.
Example one
For solving the technical problem who exists among the prior art, the embodiment of the utility model provides an infrared light intensity detector.
Fig. 1 shows a schematic structural diagram of an infrared light intensity detector according to an embodiment of the present invention; referring to fig. 1, the infrared light intensity detector of the present invention includes a photoelectric detection module, an operational amplifier, a processor and an infrared emission module, which are connected in sequence.
Fig. 2 shows a schematic structural diagram of an optoelectronic detection module and an operational amplifier in a first embodiment of the present invention; referring to fig. 2, the photoelectric detection module includes an infrared receiving unit and a gear control unit connected with the infrared receiving unit, the gear control unit includes at least two sets of gear control circuits connected in parallel, and each set of gear control circuit includes a relay, a gear resistor and a gear control key. The relay comprises an electric shock switch and a control switch used for controlling the electric shock switch to be opened and closed, and the relay contact switch is a normally open contact switch. Further, the gear resistor is connected with one end of the normally open electric shock switch of the relay, and the gear control key is connected with one end of the relay control switch. In order to avoid the relay control switch from being damaged by too large current in the circuit when the relay control switch is closed, the infrared light intensity detector of the embodiment is also provided with a control key protection resistor between the relay control switch and the gear control key. Preferably, the gear control unit comprises five sets of gear control circuits connected in parallel.
It should be noted that, when in the circuit in order to guarantee every gear control circuit of group, photoelectric detection module can realize detecting the infrared illumination intensity of different scopes, the utility model relates to a gear resistance value in every gear control circuit of group is all different. And preferably, the infrared receiving unit is an infrared receiving diode D2, and the infrared receiving diode D2 can convert the optical signal into photocurrent. The infrared receiving diode D2 is connected with the gear resistor in each group of gear control circuits. The output end of the infrared receiving diode D2 is also connected with the inverting input end of the operational amplifier, the input end of the infrared receiving diode D2 is grounded, the non-inverting input end of the operational amplifier is grounded, and the output end of the operational amplifier is respectively connected with the other end of the normally open contact switch of the relay in each group of gear control circuits, so that when a certain group of gear control circuits is switched on, the output end of the operational amplifier is connected to the inverting input end of the operational amplifier sequentially through the normally open contact switch and the gear resistor which are closed in the group of gear control circuits, namely negative feedback is formed between the output end and the inverting input end of the.
Fig. 3 shows a schematic structural diagram of a mid-infrared emission module according to an embodiment of the present invention. Referring to fig. 3, the infrared emitting module of the present invention includes an infrared led D1, and further the infrared emitting module includes a pulse width controller and a control switch, and the infrared led D1, the pulse width controller and the control switch are connected in series. The pulse width controller is connected with a pulse width modulation pin of the processor and is used for modulating the illumination intensity of the infrared light-emitting diode D1; the control switch is connected with a control pin of the processor and is used for controlling the working state of the infrared emission module, namelyAnd the infrared emission module is used for controlling whether to be in a working state or not. Preferably, the pulse width modulation range of the processor is 0-2000 uw/cm2The pulse width modulation precision of the processor is 0.01uw/cm2。
Furthermore, the pulse width controller is an NPN type triode Q1, the control switch is a PNP type triode Q2, a collector of the NPN type triode Q1 is connected to the power supply terminal through a first resistor R1, a base of the NPN type triode Q1 is connected to the pulse width modulation pin of the processor through a second resistor R2, an emitter of the NPN type triode Q1 is connected to an emitter of the PNP type triode Q2, a base of the PNP type triode Q2 is connected to the control pin of the processor through a third resistor R3, and a collector of the PNP type triode Q2 is connected to the input terminal of the infrared light emitting diode D1.
The processor comprises a processing module, an analog-to-digital conversion module and a signal transmission module, wherein the analog-to-digital conversion module and the signal transmission module are respectively connected with the processing module, and the analog-to-digital conversion module is connected with the operational amplifier so as to convert an analog signal output by the operational amplifier into a digital signal and transmit the digital signal to the processing module; the signal transmission module is in communication connection with the upper computer, and the infrared intensity detector is enabled to emit infrared light with specified intensity through the upper computer to test the infrared receiving capability of the intelligent electric energy meter or other devices to be detected. The communication connection may be a wired or wireless one. The processing module is used for processing the digital signal to obtain the intensity of the infrared light received by the infrared receiving diode D2.
The infrared light intensity detector of the embodiment is further provided with a display, and the display is connected with the processor so as to display the infrared light intensity obtained by processing of the processor. Preferably, the display is a liquid crystal display.
In order to further clearly explain the working mode of the infrared light intensity detector of the present invention, it is explained below by specific examples.
Specifically, when the infrared receiving diode D2 receives an infrared light signal, the infrared receiving diode D2 converts the infrared light signal into a photocurrent Id, the photocurrent Id is transmitted to the inverting input terminal of the operational amplifier, the received infrared light intensity range is determined in advance, and the shift control key of the shift control circuit of the corresponding group is pressed, so that the output terminal of the operational amplifier performs negative feedback on the inverting input terminal thereof through the shift control circuit, at this time, the output signal of the operational amplifier is V out ═ Id × R5+ Ud2, and after the analog signal is processed by the processor, the corresponding infrared light intensity is displayed through the display. When the infrared receiving capacity of the intelligent electric energy meter or other devices to be detected needs to be detected, the signal transmission module in the processor receives the intensity of infrared light to be emitted set by the upper computer and transmits the intensity of the infrared light to the processing module in the processor, the processing module processes the intensity of the infrared light to be emitted, corresponding pulse width modulation signals are transmitted to the infrared emission module through the pulse width modulation pins, and the infrared emission module emits infrared light with corresponding intensity.
The embodiment of the utility model provides an infrared luminous intensity detector through set up multiunit gear control circuit in photoelectric detection module, has enlarged the utility model discloses infrared luminous intensity detector's detection range, to the different intelligent ammeter of infrared communication illumination intensity scope or other infrared detection device's that detect detection simultaneously, still can come to detect the infrared light intensity of not ventilating illumination intensity scope through selecting of gear control circuit, improve the accuracy that infrared illumination intensity detected. Simultaneously the utility model discloses infrared luminous intensity detector still sets up infrared emission module, sets up the infrared light that appointed intensity can also be launched to this detector through the host computer, tests intelligent ammeter or other infrared receiving ability who waits to detect the device.
Although the embodiments of the present invention have been disclosed, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be apparent to persons skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An infrared light intensity detector is characterized by comprising a photoelectric detection module, an operational amplifier and a processor which are connected in sequence;
wherein, the photoelectric detection module include infrared receiving element and with the gear control unit that infrared receiving element connects, gear control unit includes at least two sets of parallel connection's gear control circuit, gear control circuit include the relay, with gear resistance that relay normally open contact switch one end is connected and with the gear control key that relay control switch connects, every group gear resistance among the gear control circuit is different.
2. The infrared light intensity detecting instrument according to claim 1, wherein the infrared receiving unit is an infrared receiving diode, an output terminal of the infrared receiving diode is connected to an inverting input terminal of the operational amplifier, an input terminal of the infrared receiving diode is grounded, a non-inverting input terminal of the operational amplifier is grounded, and an output terminal of the operational amplifier is connected to the other terminal of the normally open contact switch of the relay in each group of the shift control circuits.
3. The infrared light intensity detector of claim 2, wherein the gear control circuit further comprises a control key protection resistor connected between the relay control switch and the gear control key.
4. The infrared light intensity detector of claim 1, further comprising an infrared emission module coupled to the processor, the infrared emission module comprising an infrared light emitting diode.
5. The infrared light intensity detector of claim 4, wherein the infrared emission module further comprises a pulse width controller and a control switch sequentially connected to the input terminal of the infrared light emitting diode, the pulse width controller is connected to a pulse width modulation pin of the processor, the control switch is connected to the control pin of the processor, and the output terminal of the infrared light emitting diode is grounded.
6. The infrared light intensity detector according to claim 5, wherein the pulse width controller is an NPN type transistor, the control switch is a PNP type transistor, a collector of the NPN type transistor is connected to a power supply terminal through a first resistor, a base of the NPN type transistor is connected to the pulse width modulation pin of the processor through a second resistor, an emitter of the NPN type transistor is connected to the emitter of the PNP type transistor, a base of the PNP type transistor is connected to the control pin of the processor through a third resistor, and a collector of the PNP type transistor is connected to the input terminal of the infrared light emitting diode.
7. The infrared light intensity detector of claim 1, wherein the processor includes a processing module, and an analog-to-digital conversion module and a signal transmission module respectively connected to the processing module, the analog-to-digital conversion module is connected to the operational amplifier, and the signal transmission module is in communication connection with an upper computer.
8. The infrared light intensity detector of claim 1, further comprising a display coupled to the processor to display results of the processing by the processor.
9. The infrared light intensity detector of claim 1, wherein the processor modulates the pulse width in a range of 0 to 2000uw/cm2The precision of the pulse width modulation by the processor is 0.01uw/cm2。
10. The infrared light intensity detector according to any one of claims 1 to 9, wherein the shift position control unit includes five sets of shift position control circuits connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022175168.XU CN212779562U (en) | 2020-09-28 | 2020-09-28 | Infrared light intensity detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022175168.XU CN212779562U (en) | 2020-09-28 | 2020-09-28 | Infrared light intensity detector |
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| Publication Number | Publication Date |
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| CN212779562U true CN212779562U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022175168.XU Active CN212779562U (en) | 2020-09-28 | 2020-09-28 | Infrared light intensity detector |
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| CN (1) | CN212779562U (en) |
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