CN218496264U - Optical power meter circuit and optical power meter - Google Patents
Optical power meter circuit and optical power meter Download PDFInfo
- Publication number
- CN218496264U CN218496264U CN202222195760.5U CN202222195760U CN218496264U CN 218496264 U CN218496264 U CN 218496264U CN 202222195760 U CN202222195760 U CN 202222195760U CN 218496264 U CN218496264 U CN 218496264U
- Authority
- CN
- China
- Prior art keywords
- chip
- resistor
- optical power
- main control
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 106
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 239000013307 optical fiber Substances 0.000 claims abstract description 17
- 230000003321 amplification Effects 0.000 claims description 72
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 72
- 239000003990 capacitor Substances 0.000 claims description 62
- 238000001914 filtration Methods 0.000 claims description 16
- 230000001052 transient effect Effects 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 102100040678 Programmed cell death protein 1 Human genes 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 101710089372 Programmed cell death protein 1 Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J1/46—Electric circuits using a capacitor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Sources (AREA)
Abstract
The utility model provides an optical power meter circuit and optical power meter, optical power meter circuit includes signal reception module, control module and USB interface; the input end of the signal receiving module is connected with the optical fiber, the output end of the signal receiving module is connected with the input end of the control module, the output end of the control module is connected with the USB interface, and the USB interface is also connected with an external terminal; wherein: the signal receiving module receives an optical signal input by the optical fiber and outputs a detection signal to the control module according to the optical signal; the control module detects the signal, calculates the optical power value according to the detection signal, and sends the calculated optical power value to the external terminal through the USB interface. Through setting up the USB interface, can send the light power value that obtains to external terminal through the USB interface and show, when having widened the application scene, can reduce and show relevant part to reduce the inside device quantity of optical power meter, reduce the volume of optical power meter, reduce the cost of optical power meter.
Description
Technical Field
The utility model relates to a signal detection especially relates to an optical power meter circuit and optical power meter.
Background
An optical power meter is needed in the occasions of testing the application of an optical channel and the occasions of producing optical devices and optical modules; and current optical power meter is mostly handheld or desk-top, reads optical power data through the display screen that sets up on optical power meter, nevertheless because current optical power meter's volume is great, portable not convenient to have restricted optical power meter's use scene.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides an optical power meter circuit and optical power meter, aims at solving among the prior art optical power meter volume great, portable's problem not.
In order to achieve the above object, the present invention provides an optical power meter circuit, which includes a signal receiving module, a control module and a USB interface; the input end of the signal receiving module is connected with an optical fiber, the output end of the signal receiving module is connected with the input end of the control module, the output end of the control module is connected with the USB interface, and the USB interface is also connected with an external terminal; wherein:
the signal receiving module is used for receiving the optical signal input by the optical fiber and outputting a detection signal to the control module according to the optical signal;
the control module is used for receiving the detection signal sent by the signal receiving module, calculating an optical power value according to the detection signal, and sending the calculated optical power value to the external terminal through a USB interface;
the signal receiving module comprises a signal receiving interface, a current amplifying unit and a voltage following unit; the signal receiving interface is connected between the optical fiber and the current amplifying unit, the output end of the current amplifying unit is connected with the input end of the voltage following unit, and the output end of the voltage following unit is connected with the input end of the control module; wherein:
the signal receiving interface is used for receiving the optical signal input by the optical fiber and sending a current signal generated according to the received optical signal to the current amplifying unit;
the current amplifying unit is used for receiving the current signal sent by the signal receiving interface, generating a voltage signal corresponding to the amplified current signal after amplifying the current signal, and sending the voltage signal to the voltage following unit;
the voltage following unit is used for receiving the voltage signal sent by the current amplifying unit, generating a detection signal corresponding to the voltage signal, and sending the detection signal to the control module.
Optionally, the current amplifying unit includes a logarithmic amplifier chip, a voltage amplifying subunit, a filtering subunit, a first capacitor, a second capacitor, a third capacitor, a first resistor, and a second resistor; wherein:
the input end of the logarithmic amplification chip is connected with the output anode of the signal receiving interface, the input end of the logarithmic amplification chip is also connected with the filtering subunit, and the bias control end of the logarithmic amplification chip is connected with the output cathode of the signal receiving interface;
the power input end of the logarithmic amplification chip is connected with the power end of the USB interface, and the power input end of the logarithmic amplification chip is grounded through the first capacitor;
the power supply output end of the logarithmic amplification chip is connected with the logarithmic end of the logarithmic amplification chip through the first resistor, the logarithmic end of the logarithmic amplification chip is grounded through the second capacitor, and the logarithmic end of the logarithmic amplification chip is connected with the non-inverting input end of the buffer amplifier of the logarithmic amplification chip through the second resistor;
the voltage amplification subunit is connected between the inverting input end of the buffer amplifier of the logarithmic amplification chip and the output end of the logarithmic amplification chip; the output end of the logarithmic amplification chip is connected with the input end of the voltage following unit, and the protection end of the logarithmic amplification chip is grounded through the third capacitor.
Optionally, the voltage amplification subunit includes a third resistor and a fourth resistor; wherein:
the first end of the third resistor is connected with the inverting input end of the logarithmic amplification chip, and the first section of the third resistor is grounded through the fourth resistor; and the second end of the third resistor is connected with the output end of the logarithmic amplification chip.
Optionally, the filtering subunit includes a fourth capacitor and a fifth resistor; wherein:
the first end of the fourth capacitor is connected with the input end of the logarithmic amplification chip, and the second end of the fourth capacitor is grounded through the fifth resistor.
Optionally, the voltage following unit includes a voltage following chip, a fifth capacitor, a sixth resistor, a seventh resistor, and an eighth resistor; wherein:
the non-inverting input end of the voltage following chip is connected with the output end of the current amplifying unit through the sixth resistor, the non-inverting input end of the voltage following chip is further connected with the output end of the voltage following chip through the seventh resistor, the output end of the voltage following chip is connected with the inverting input end of the voltage following chip through the eighth resistor, the output end of the voltage following chip is further connected with the input end of the control module, and the output end of the voltage following chip is further grounded through the fifth capacitor; the positive power end of the voltage following chip is connected with the power end of the USB interface, and the negative power end of the voltage following chip is grounded; the cut-off end of the voltage following chip is connected with the power end of the USB interface; the turn-off end of the voltage following chip is grounded through the sixth capacitor.
Optionally, the control module includes a main control chip, an indication unit, a burning unit, a transient diode chip, a seventh capacitor, and an eighth capacitor; wherein:
the input end of the main control chip is connected with the output end of the signal receiving module; the data positive end of the main control chip is connected with the data positive end of the USB interface, the data negative end of the main control chip is connected with the data negative end of the USB interface, the power supply end of the main control chip is connected with the power supply end of the USB interface, the sensing input end of the main control chip is connected with the input voltage regulating end of the main control chip, the data positive end of the main control chip, the data negative end of the main control chip and the power supply end of the main control chip are respectively connected with one negative electrode of the transient diode chip, and the common end of the transient diode chip is grounded;
the reference voltage end of the main control chip is grounded through the seventh capacitor, the direct current output end of the main control chip is grounded through the eighth capacitor, the direct current output end of the main control chip is also connected with the power supply end of the indicating unit, and the indicating end of the main control chip is connected with the control end of the indicating unit; and the burning end of the main control chip is connected with the burning unit.
Optionally, the indication unit includes a light emitting diode and a ninth resistor; wherein:
the anode of the light emitting diode is used as a power supply end of the indicating unit, and the cathode of the light emitting diode is connected with the indicating end of the main control chip through the ninth resistor.
Optionally, the burning unit includes a burning interface, a ninth capacitor, a tenth resistor, and an eleventh resistor; wherein:
the first data end of the burning interface is connected with the first burning end of the main control chip, the first data end of the burning interface is also connected with the first end of the eleventh resistor through the ninth capacitor and the tenth resistor respectively, and the second end of the eleventh resistor is connected with the direct current output end of the main control chip;
and the second data end of the burning interface is connected with the second burning end of the main control chip.
In addition, in order to achieve the above object, the present invention further provides an optical power meter, which includes a housing and an optical power meter circuit, wherein the optical power meter circuit is disposed in the housing; the optical power meter circuit is configured as an optical power meter circuit as described above.
The utility model provides an optical power meter circuit and optical power meter, optical power meter circuit includes signal reception module, control module and USB interface; the input end of the signal receiving module is connected with an optical fiber, the output end of the signal receiving module is connected with the input end of the control module, the output end of the control module is connected with the USB interface, and the USB interface is also connected with an external terminal; wherein: the signal receiving module is used for receiving the optical signal input by the optical fiber and outputting a detection signal to the control module according to the optical signal; and the control module is used for receiving the detection signal sent by the signal receiving module, calculating an optical power value according to the detection signal, and sending the calculated optical power value to the external terminal through a USB interface. Through setting up the USB interface for can send the optical power value that obtains to external terminal through the USB interface and show, when having widened application scene, can reduce and show relevant part, thereby reduce the inside device quantity of optical power meter, reduce the volume of optical power meter, reduce the cost of optical power meter, simultaneously, because the optical power meter volume reduces, consequently can make portable optical power meter, the user of being convenient for carries.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a functional block diagram of an embodiment of the optical power meter circuit of the present invention;
fig. 2 is a circuit structure diagram of a current amplifying unit in the optical power meter circuit of the present invention;
fig. 3 is a circuit structure diagram of a voltage following unit in the optical power meter circuit of the present invention;
fig. 4 is the circuit structure diagram of the control module in the optical power meter circuit of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Reference numerals indicate the same.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an optical power meter circuit is applied to the optical power meter, please refer to fig. 1, and fig. 1 is the utility model discloses the functional module diagram of an optical power meter circuit embodiment. In this embodiment, the optical power meter circuit includes a signal receiving module 100, a control module 200, and a USB interface 300; the input end of the signal receiving module 100 is connected with an optical fiber, the output end of the signal receiving module 100 is connected with the input end of the control module 200, the output end of the control module 200 is connected with the USB interface 300, and the USB interface 300 is further connected with an external terminal; wherein:
the signal receiving module 100 is configured to receive an optical signal input by the optical fiber, and output a detection signal to the control module 200 according to the optical signal;
the signal receiving module 100 includes a signal receiving interface PD1, a current amplifying unit, and a voltage following unit; the signal receiving interface PD1 is connected between the optical fiber and the current amplifying unit, an output end of the current amplifying unit is connected with an input end of the voltage following unit, and an output end of the voltage following unit is connected with an input end of the control module 200; wherein:
the signal receiving interface PD1 is configured to receive an optical signal input by the optical fiber and send a current signal generated according to the received optical signal to the current amplifying unit;
the current amplifying unit is used for receiving the current signal sent by the signal receiving interface PD1, generating a voltage signal corresponding to the amplified current signal after amplifying the current signal, and sending the voltage signal to the voltage following unit;
the voltage following unit is configured to receive the voltage signal sent by the current amplifying unit, generate a detection signal corresponding to the voltage signal, and send the detection signal to the control module 200.
The signal receiving interface in this embodiment is a PD (Photodetector); the PD outputs a corresponding current signal according to the received optical signal; because the current signal output by the PD is small, the current amplifying unit is arranged to amplify the current signal output by the PD, so that the current after the amplification operation can be processed by a subsequent device. The voltage follower circuit can function as impedance matching, so that a stable output voltage can be obtained.
The control module 200 is configured to receive the detection signal sent by the signal receiving module 100, calculate an optical power value according to the detection signal, and send the calculated optical power value to the external terminal through the USB interface 300.
The control module 200 obtains information of an input optical signal of the optical fiber, that is, a detection signal, through the signal receiving module 100, calculates a corresponding optical power value according to the detection signal, outputs the optical power value through the USB interface 300, and meanwhile, may also supply power from an external device through the USB interface 300 without a built-in power supply.
In the embodiment, by setting the USB interface 300, the obtained optical power value can be sent to an external terminal through the USB interface 300 for display, so that application scenarios are widened, and meanwhile, display-related components can be reduced, thereby reducing the number of internal devices of the optical power meter, reducing the volume of the optical power meter, and reducing the cost of the optical power meter.
Further, referring to fig. 2, the current amplifying unit includes a logarithmic amplifying chip U1, a voltage amplifying subunit 111, a filtering subunit 112, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, and a second resistor R2; wherein:
the input end of the logarithmic amplification chip U1 is connected to the output positive electrode of the signal receiving interface PD1, the input end of the logarithmic amplification chip U1 is further connected to the filtering subunit 112, and the bias control end of the logarithmic amplification chip U1 is connected to the output negative electrode of the signal receiving interface PD 1;
further, the filtering subunit 112 includes a fourth capacitor C4 and a fifth resistor R5; wherein:
the first end of the fourth capacitor C4 is connected to the input end of the logarithmic amplification chip U1, and the second end of the fourth capacitor C4 is grounded through the fifth resistor R5.
The power input end of the logarithmic amplification chip U1 is connected with the power end of the USB interface 300, and the power input end of the logarithmic amplification chip U1 is also grounded through the first capacitor C1;
the power supply output end of the logarithmic amplification chip U1 is connected with the logarithmic end of the logarithmic amplification chip U1 through the first resistor R1, the logarithmic end of the logarithmic amplification chip U1 is grounded through the second capacitor C2, and the logarithmic end of the logarithmic amplification chip U1 is connected with the non-inverting input end of the buffer amplifier of the logarithmic amplification chip U1 through the second resistor R2;
the voltage amplification subunit 111 is connected between the inverting input end of the buffer amplifier of the logarithmic amplification chip U1 and the output end of the logarithmic amplification chip U1; the output end of the logarithmic amplification chip U1 is connected with the input end of the voltage following unit, and the protection end of the logarithmic amplification chip U1 is grounded through the third capacitor C3.
In the embodiment, a logarithmic amplification chip U1 with the model number of ADL5303 is adopted; it should be noted that the specific type of the logarithmic amplification chip U1 may be selected according to the actual application scenario and the need.
The signal receiving interface PD1 outputs a current signal value to the logarithmic amplification chip U1 through the output anode, and when self-adaptive bias control is needed, the output cathode of the signal receiving interface PD1 is connected with the bias control end of the logarithmic amplification chip U1. The filtering subunit 112 is configured to perform a filtering operation on the current signal output by the signal receiving interface PD1 to remove external noise.
The logarithmic amplifier chip U1 is powered by the USB interface 300, and the first capacitor C1 is used for performing a filtering operation on the voltage input by the USB interface 300.
The power output end of the logarithmic amplification chip U1 and the logarithmic end of the logarithmic amplification chip U1 output voltage to the non-inverting input end of the buffer amplifier of the logarithmic amplification chip U1, and the second capacitor C2 is a filter capacitor.
The voltage amplifying subunit 111 is used for setting an amplifying parameter of the logarithmic amplifying chip U1.
The current output by the signal receiving interface PD1 is amplified by the logarithmic amplification chip U1 and then output to the voltage following unit.
Further, the voltage amplifying subunit 111 includes a third resistor R3 and a fourth resistor R4; wherein:
the first end of the third resistor R3 is connected with the inverting input end of the logarithmic amplification chip U1, and the first section of the third resistor R3 is grounded through the fourth resistor R4; and the second end of the third resistor R3 is connected with the output end of the logarithmic amplification chip U1.
The output voltage of the logarithmic amplification chip U1 can be controlled by setting the ratio of the third resistor R3 to the fourth resistor R4. Specifically, the output voltage of the logarithmic amplification chip U1 is the logarithmic voltage of the logarithmic amplification chip U1 multiplied by the ratio of the third resistor R3 to the fourth resistor R4.
Further, referring to fig. 3, the voltage follower unit includes a voltage follower chip U2, a fifth capacitor C5, a sixth capacitor C6, a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8; wherein:
the non-inverting input end of the voltage following chip U2 is connected to the output end of the current amplifying unit through the sixth resistor R6, the non-inverting input end of the voltage following chip U2 is further connected to the output end of the voltage following chip U2 through the seventh resistor R7, the output end of the voltage following chip U2 is connected to the inverting input end of the voltage following chip U2 through the eighth resistor R8, the output end of the voltage following chip U2 is further connected to the input end of the control module 200, and the output end of the voltage following chip U2 is further grounded through the fifth capacitor C5; the positive power end of the voltage following chip U2 is connected with the power end of the USB interface 300, and the negative power end of the voltage following chip U2 is grounded; the cut-off end of the voltage following chip U2 is connected with the power end of the USB interface 300; the turn-off end of the voltage following chip U2 is also grounded through the sixth capacitor C6.
In this embodiment, a voltage following chip U2 with a model of MAX4231AXT + T is adopted, and it should be noted that the specific model of the voltage following chip U2 may be selected according to an actual application scenario and needs.
The voltage follower chip U2 supplies power through the USB interface 300, and the sixth capacitor C6 is used for filtering the voltage input by the USB interface 300. The fifth capacitor C5 is used for filtering the voltage output by the voltage following chip U2; the turn-off end of the voltage following chip U2 is used for controlling the working state of the voltage following chip U2, when the turn-off end of the voltage following chip U2 is at a high level, the voltage following chip U2 works normally, and when the turn-off end of the voltage following chip U2 is at a low level, the voltage following chip U2 is turned off and does not work.
The voltage output by the current amplifying unit is amplified by the voltage following chip U2 and then output to the control module 200.
Further, referring to fig. 4, the control module 200 includes a main control chip U3, an indication unit 210, a burning unit 220, a transient diode chip E1, a seventh capacitor C7, and an eighth capacitor C8; wherein:
the input end of the main control chip U3 is connected with the output end of the signal receiving module 100; the positive data end of the main control chip U3 is connected with the positive data end of the USB interface 300, the negative data end of the main control chip U3 is connected with the negative data end of the USB interface 300, the power supply end of the main control chip U3 is connected with the power supply end of the USB interface 300, the sensing input end of the main control chip U3 is connected with the input voltage regulating end of the main control chip U3, the positive data end of the main control chip U3, the negative data end of the main control chip U3 and the power supply end of the main control chip U3 are respectively connected with one negative electrode of the transient diode chip E1, and the common end of the transient diode chip E1 is grounded;
the reference voltage end of the main control chip U3 is grounded through the seventh capacitor C7, the dc output end of the main control chip U3 is grounded through the eighth capacitor C8, the dc output end of the main control chip U3 is further connected with the power supply end of the indicating unit 210, and the indicating end of the main control chip U3 is connected with the control end of the indicating unit 210; the burning end of the main control chip U3 is connected to the burning unit 220.
In this embodiment, a main control chip U3 with a model number of C8051F380 is adopted, and it should be noted that a specific model number of the main control chip U3 may be selected according to an actual application scenario and a need.
The main control chip U3 supplies power through the USB interface 300, and the main control chip U3 internally steps down the power supplied by the USB interface 300 and outputs a voltage to the indicating unit 210 and the burning unit 220 to supply power. The eighth capacitor C8 is used for filtering the voltage outputted to the indicating unit 210 and the programming unit 220.
The main control chip U3 receives the detection signal sent by the signal receiving module 100, and calculates an optical power value through an internal lookup table according to the detection signal; the main control chip U3 outputs a light power value through the data positive end and the data negative end.
The transient diode is used for changing the high impedance between two poles into low impedance when being impacted by reverse transient high energy, absorbing surge power, and enabling a voltage clamp between the two poles to be at a preset value, thereby effectively protecting precise components in an electronic circuit from being damaged by various surge pulses.
The indicating unit 210 is used for indicating the working state of the main control chip U3. The burning unit 220 is used for burning programs for the main control chip U3.
Further, the indication unit 210 includes a light emitting diode and a ninth resistor R9; wherein:
the anode of the light emitting diode is used as a power supply end of the indicating unit 210, and the cathode of the light emitting diode is connected with the indicating end of the main control chip U3 through the ninth resistor R9.
The light emitting diode is used for indicating the working state of the main control chip U3, and specifically, when the main control chip U3 works, a low level signal is sent to the light emitting diode, and the light emitting diode is lightened; when the main control chip U3 stops working, the high-level signal value light emitting diode is sent, and the light emitting diode is turned off.
Further, the burning unit 220 includes a burning interface J1, a ninth capacitor C9, a tenth resistor R10, and an eleventh resistor R11; wherein:
the first data end of the burning interface J1 is connected to the first burning end of the main control chip U3, the first data end of the burning interface J1 is further connected to the first end of the eleventh resistor R11 through the ninth capacitor C9 and the tenth resistor R10, respectively, and the second end of the eleventh resistor R11 is connected to the dc output end of the main control chip U3;
and a second data end of the burning interface J1 is connected with a second burning end of the main control chip U3.
The ninth capacitor C9 is used for performing a filtering operation. The tenth resistor R10 and the eleventh resistor R11 are pull-up resistors, and when a low-level signal is input to the first data end of the burning interface J1, the first burning end of the main control chip U3 receives the low-level signal; when the first data end of the burning interface J1 does not input the low level signal, the first burning end of the main control chip U3 receives the high level signal.
The embodiment can reasonably realize the function of the optical power meter.
It should be noted that, in the above embodiment, only pins necessary to be connected for achieving the purpose of the present application in the digital amplification chip U1, the voltage follower chip U2, and the main control chip U3 are labeled and described, and it can be understood that, according to different models of specifically adopted chips, the chip may include pins that are not connected, and meanwhile, conventional function expansion may be performed through the pins that are not connected according to actual needs.
The utility model discloses still protect an optical power meter, this optical power meter include casing and optical power meter circuit, optical power meter circuit set up in the casing, above-mentioned embodiment can be referred to this optical power meter circuit's structure, no longer gives unnecessary details here. It should be understood that, since the optical power meter of this embodiment adopts the technical solution of the optical power meter circuit, the optical power meter has all the beneficial effects of the optical power meter circuit.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. The term "comprising", without further limitation, means that the element so defined is not excluded from the group of processes, methods, articles, or systems that include the element. The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (9)
1. An optical power meter circuit is characterized by comprising a signal receiving module, a control module and a USB interface; the input end of the signal receiving module is connected with an optical fiber, the output end of the signal receiving module is connected with the input end of the control module, the output end of the control module is connected with the USB interface, and the USB interface is also connected with an external terminal; wherein:
the signal receiving module is used for receiving the optical signal input by the optical fiber and outputting a detection signal to the control module according to the optical signal;
the control module is used for receiving the detection signal sent by the signal receiving module, calculating an optical power value according to the detection signal, and sending the calculated optical power value to the external terminal through a USB interface;
the signal receiving module comprises a signal receiving interface, a current amplifying unit and a voltage following unit; the signal receiving interface is connected between the optical fiber and the current amplifying unit, the output end of the current amplifying unit is connected with the input end of the voltage following unit, and the output end of the voltage following unit is connected with the input end of the control module; wherein:
the signal receiving interface is used for receiving the optical signal input by the optical fiber and sending a current signal generated according to the received optical signal to the current amplifying unit;
the current amplifying unit is used for receiving the current signal sent by the signal receiving interface, generating a voltage signal corresponding to the amplified current signal after amplifying the current signal, and sending the voltage signal to the voltage following unit;
the voltage following unit is used for receiving the voltage signal sent by the current amplifying unit, generating a detection signal corresponding to the voltage signal and sending the detection signal to the control module.
2. The optical power meter circuit of claim 1, wherein the current amplification unit comprises a logarithmic amplification chip, a voltage amplification subunit, a filtering subunit, a first capacitor, a second capacitor, a third capacitor, a first resistor, and a second resistor; wherein:
the input end of the logarithmic amplification chip is connected with the output anode of the signal receiving interface, the input end of the logarithmic amplification chip is also connected with the filtering subunit, and the bias control end of the logarithmic amplification chip is connected with the output cathode of the signal receiving interface;
the power input end of the logarithmic amplification chip is connected with the power end of the USB interface, and the power input end of the logarithmic amplification chip is grounded through the first capacitor;
the power supply output end of the logarithmic amplification chip is connected with the logarithmic end of the logarithmic amplification chip through the first resistor, the logarithmic end of the logarithmic amplification chip is grounded through the second capacitor, and the logarithmic end of the logarithmic amplification chip is connected with the non-inverting input end of the buffer amplifier of the logarithmic amplification chip through the second resistor;
the voltage amplification subunit is connected between the inverting input end of the buffer amplifier of the logarithmic amplification chip and the output end of the logarithmic amplification chip; the output end of the logarithmic amplification chip is connected with the input end of the voltage following unit, and the protection end of the logarithmic amplification chip is grounded through the third capacitor.
3. The optical power meter circuit of claim 2, wherein the voltage amplification subunit comprises a third resistor and a fourth resistor; wherein:
the first end of the third resistor is connected with the inverting input end of the logarithmic amplification chip, and the first section of the third resistor is grounded through the fourth resistor; and the second end of the third resistor is connected with the output end of the logarithmic amplification chip.
4. The optical power meter circuit of claim 2, wherein the filtering subunit comprises a fourth capacitor and a fifth resistor; wherein:
the first end of the fourth capacitor is connected with the input end of the logarithmic amplification chip, and the second end of the fourth capacitor is grounded through the fifth resistor.
5. The optical power meter circuit of claim 1, wherein the voltage follower unit comprises a voltage follower chip, a fifth capacitor, a sixth resistor, a seventh resistor, and an eighth resistor; wherein:
the non-inverting input end of the voltage following chip is connected with the output end of the current amplifying unit through the sixth resistor, the non-inverting input end of the voltage following chip is further connected with the output end of the voltage following chip through the seventh resistor, the output end of the voltage following chip is connected with the inverting input end of the voltage following chip through the eighth resistor, the output end of the voltage following chip is further connected with the input end of the control module, and the output end of the voltage following chip is further grounded through the fifth capacitor; the positive power end of the voltage following chip is connected with the power end of the USB interface, and the negative power end of the voltage following chip is grounded; the turn-off end of the voltage following chip is connected with the power supply end of the USB interface; the turn-off end of the voltage following chip is grounded through the sixth capacitor.
6. The optical power meter circuit of claim 1, wherein the control module comprises a main control chip, an indication unit, a burning unit, a transient diode chip, a seventh capacitor, and an eighth capacitor; wherein:
the input end of the main control chip is connected with the output end of the signal receiving module; the data positive end of the main control chip is connected with the data positive end of the USB interface, the data negative end of the main control chip is connected with the data negative end of the USB interface, the power supply end of the main control chip is connected with the power supply end of the USB interface, the sensing input end of the main control chip is connected with the input voltage regulating end of the main control chip, the data positive end of the main control chip, the data negative end of the main control chip and the power supply end of the main control chip are respectively connected with one negative electrode of the transient diode chip, and the common end of the transient diode chip is grounded;
the reference voltage end of the main control chip is grounded through the seventh capacitor, the direct current output end of the main control chip is grounded through the eighth capacitor, the direct current output end of the main control chip is also connected with the power supply end of the indicating unit, and the indicating end of the main control chip is connected with the control end of the indicating unit; and the burning end of the main control chip is connected with the burning unit.
7. The optical power meter circuit of claim 6, wherein the indication unit comprises a light emitting diode and a ninth resistor; wherein:
the anode of the light emitting diode is used as a power supply end of the indicating unit, and the cathode of the light emitting diode is connected with the indicating end of the main control chip through the ninth resistor.
8. The optical power meter circuit of claim 6, wherein the burning unit comprises a burning interface, a ninth capacitor, a tenth resistor, and an eleventh resistor; wherein:
the first data end of the burning interface is connected with the first burning end of the main control chip, the first data end of the burning interface is also connected with the first end of the eleventh resistor through the ninth capacitor and the tenth resistor respectively, and the second end of the eleventh resistor is connected with the direct current output end of the main control chip;
and the second data end of the burning interface is connected with the second burning end of the main control chip.
9. An optical power meter, characterized in that the optical power meter comprises a housing and an optical power meter circuit, the optical power meter circuit being disposed within the housing; the optical power meter circuit is configured as an optical power meter circuit according to any of claims 1-8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110969750.XA CN113418602A (en) | 2021-08-23 | 2021-08-23 | Optical power meter circuit and optical power meter |
| CN202110969750X | 2021-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218496264U true CN218496264U (en) | 2023-02-17 |
Family
ID=77719265
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110969750.XA Pending CN113418602A (en) | 2021-08-23 | 2021-08-23 | Optical power meter circuit and optical power meter |
| CN202222195760.5U Active CN218496264U (en) | 2021-08-23 | 2022-08-19 | Optical power meter circuit and optical power meter |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110969750.XA Pending CN113418602A (en) | 2021-08-23 | 2021-08-23 | Optical power meter circuit and optical power meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN113418602A (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201438135U (en) * | 2009-06-02 | 2010-04-14 | 中兴通讯股份有限公司 | Light-power waveform detection device |
| CN102252752B (en) * | 2011-05-04 | 2013-04-03 | 清华大学 | Portable universal serial bus (USB) optical power meter |
| CN102735335A (en) * | 2012-07-02 | 2012-10-17 | 上海市共进通信技术有限公司 | Device for realizing optical power detection in optical fiber network |
| CN103323106B (en) * | 2013-06-09 | 2015-11-18 | 国家电网公司 | A kind of luminous power test macro |
| CN104935376A (en) * | 2014-03-19 | 2015-09-23 | 上海光维通信技术股份有限公司 | Optical power measuring device |
| CN104717006B (en) * | 2015-01-09 | 2018-03-27 | 北京奥普维尔科技有限公司 | System for being tested multiple optical modules simultaneously |
| CN205785507U (en) * | 2016-03-21 | 2016-12-07 | 山东华云光电技术有限公司 | Novel modularized light power meter |
| CN106949964A (en) * | 2017-04-25 | 2017-07-14 | 杭州博源光电科技有限公司 | A kind of miniature light power meter for supporting multiple communication modes |
| CN206657263U (en) * | 2017-05-05 | 2017-11-21 | 哈尔滨理工大学 | A kind of high-power VCCS based on Howland current sources |
| CN111130208A (en) * | 2019-12-27 | 2020-05-08 | 零点创新科技有限公司 | Anti-interference electricity and overcurrent protection linkage control device and control method thereof |
| CN110912652B (en) * | 2019-12-27 | 2023-04-07 | 镇江中煤电子有限公司 | Mining anti-interference communication module and communication control method |
-
2021
- 2021-08-23 CN CN202110969750.XA patent/CN113418602A/en active Pending
-
2022
- 2022-08-19 CN CN202222195760.5U patent/CN218496264U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113418602A (en) | 2021-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1940027A3 (en) | A low power flip flop circuit | |
| CN218496264U (en) | Optical power meter circuit and optical power meter | |
| US20140009140A1 (en) | System for testing real time clock | |
| US20130257442A1 (en) | Power source detection circuit and electronic device with power source detection circuit | |
| CN108955759A (en) | The wearing detection method and Related product of wearable device | |
| CN206024086U (en) | A kind of automatic sound volume adjusting circuit and point reader | |
| CN218122535U (en) | Voltage regulation protection circuit | |
| US20100182726A1 (en) | Inrush current limitation circuit | |
| CN210666418U (en) | Modulation circuit of fire-fighting field bus | |
| CN212541260U (en) | Reset circuit of electronic equipment and electronic equipment | |
| CN212343634U (en) | Linear surge suppression circuit | |
| CN220154819U (en) | Digital input/output processing system | |
| CN212463220U (en) | Laser receiver module with serial port function | |
| CN204790414U (en) | Singlechip starting circuit | |
| CN103037043A (en) | Temperature protection device of mobile terminal subscriber identity module (SIM) card | |
| CN220419955U (en) | Serial port circuit of video processor and video processor system | |
| US8988234B2 (en) | Alarm system | |
| CN201440168U (en) | E-load machine | |
| US20150111544A1 (en) | Electronice device for indicating missed calls | |
| CN213547106U (en) | Current limiting circuit, acquisition circuit and acquisition equipment | |
| CN216981515U (en) | Power switch circuit of loudspeaker | |
| CN212305363U (en) | Signal automatic detection and automatic switching equipment | |
| CN218601417U (en) | Switch detection circuit, device and equipment | |
| CN205193056U (en) | Water quality testing circuit based on three -terminal voltage regulator tube steady voltage design | |
| CN213305371U (en) | Low power consumption mobile phone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |