CN213072679U - Multi-path optical signal detection circuit of wavelength division semi-active switching protection device - Google Patents
Multi-path optical signal detection circuit of wavelength division semi-active switching protection device Download PDFInfo
- Publication number
- CN213072679U CN213072679U CN202022333053.9U CN202022333053U CN213072679U CN 213072679 U CN213072679 U CN 213072679U CN 202022333053 U CN202022333053 U CN 202022333053U CN 213072679 U CN213072679 U CN 213072679U
- Authority
- CN
- China
- Prior art keywords
- electrically connected
- optical signal
- power supply
- module
- analog switch
- 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
Images
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model discloses a multi-path optical signal detection circuit of a wavelength division semi-active switching protection device, which comprises a power module; the input switching module comprises a plurality of optical signal sensors PD and an analog switch U16 with a plurality of input ends, the output ends of the optical signal sensors PD are electrically connected with the input end of the analog switch U16, and the power supply end of the analog switch U16 is electrically connected with the power supply module; the amplification module is electrically connected with the power supply module and the analog switch U16 respectively; the main control module is respectively electrically connected with the amplification module and the power supply module and is used for collecting data transmitted by the optical signal sensors PD and outputting different combined levels to switch the switch channel of the analog switch U16 so as to control different optical signal sensors PD to collect data; the analog switch with ultralow leakage current and low on-resistance is adopted, and the control chip is used for switching and connecting the plurality of optical signal sensors PD to one logarithmic amplifier in a time-sharing manner to realize the time-sharing collection of the optical power.
Description
Technical Field
The utility model relates to an optical power surveys the field, in particular to wavelength division semi-active switching protection device's multichannel light signal detection circuit.
Background
The existing multi-path optical power detection is usually a multi-channel independent logarithmic amplifier scheme or a multi-channel independent operational amplifier scheme, and the traditional schemes have the defects of more and complex chips, peripheral circuits and control circuits, large volume and high cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a wavelength division semi-active switches protection device's multichannel light signal detection circuit.
The utility model discloses a technical scheme that its technical problem was solved to an embodiment adopted is: a multi-path optical signal detection circuit of a wavelength division semi-active switching protection device comprises:
the power supply module is electrically connected with an external power supply;
the input switching module comprises a plurality of optical signal sensors (PD) and an analog switch U16 with a plurality of input ends, wherein the output ends of the optical signal sensors (PD) are electrically connected with the input end of an analog switch U16, and the power supply end of the analog switch U16 is electrically connected with the power supply module;
the amplifying module is respectively electrically connected with the power supply module and the analog switch U16 and is used for amplifying the signal transmitted by the optical signal sensor PD;
and the main control module is respectively electrically connected with the amplification module and the power supply module and is used for collecting data transmitted by the optical signal sensors PD and outputting different combined levels to switch the switch channels of the analog switch U16 so as to control different optical signal sensors PD to collect data.
The model of the analog switch U16 is set to MUX36S 16.
The multi-path optical signal detection circuit of the wavelength division semi-active switching protection device further comprises a voltage inversion chip U14, wherein the voltage input end of the voltage inversion chip U14 is electrically connected with the power supply module, and the voltage output end of the voltage inversion chip U14 is electrically connected with the analog switch U16.
The amplifying module comprises a LOG amplifier U21 with the model of LOG114, the input end of the LOG amplifier U21 is electrically connected with the output end of the analog switch U16, and the output end of the LOG amplifier U21 is electrically connected with the main control module.
The multi-path optical signal detection circuit of the wavelength division semi-active switching protection device further comprises a resistor R97 and a capacitor C65, one end of the resistor R97 is electrically connected with pins 9, 11 and 12 of a logarithmic amplifier U21 respectively, the other end of the resistor R97 is electrically connected with one end of a main control module and one end of a capacitor C65 respectively, and the other end of the capacitor C65 is grounded.
The main control module comprises a main control chip UC1 with the model number of 8A8K64S4A 12.
The power supply module comprises a power supply chip U3 with the model of MP1470, the input end of the power supply chip U3 is electrically connected with an external power supply, and the output end of the power supply chip U3 is electrically connected with the input switching module, the amplifying module and the main control module respectively.
The power supply module further comprises a delay starting circuit consisting of resistors R12-R13 and a capacitor C17, one end of the resistor R12 is electrically connected with an external power supply, the other end of the resistor R12 is respectively electrically connected with one end of a capacitor C17 at one end of a resistor R13 and an input end of the power supply chip U3, and the other end of the resistor R13 is respectively electrically connected with the other end of a capacitor C17 and a ground end.
The utility model has the advantages that: a multi-path optical signal detection circuit of a wavelength division semi-active switching protection device comprises a power supply module; the input switching module comprises a plurality of optical signal sensors PD and an analog switch U16 with a plurality of input ends, the output ends of the optical signal sensors PD are electrically connected with the input end of the analog switch U16, and the power supply end of the analog switch U16 is electrically connected with the power supply module; the amplification module is electrically connected with the power supply module and the analog switch U16 respectively; the main control module is respectively electrically connected with the amplification module and the power supply module and is used for collecting data transmitted by the optical signal sensors PD and outputting different combined levels to switch the switch channel of the analog switch U16 so as to control different optical signal sensors PD to collect data; the analog switch with ultralow leakage current and low on-resistance is adopted, and the control chip is used for switching and connecting the plurality of optical signal sensors PD to one logarithmic amplifier in a time-sharing manner to realize the time-sharing collection of the optical power.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic block diagram of a multi-channel optical signal detection circuit of a wavelength division semi-active switching protection device;
FIG. 2 is a circuit diagram of a power module;
FIG. 3 is a circuit diagram of a master control module;
FIG. 4 is a first schematic diagram of a portion of an input switching module;
FIG. 5 is a second schematic diagram of a portion of an input switching module;
fig. 6 is a circuit diagram of an amplifying module.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as excluding the number, and the terms greater than, less than, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly defined, the terms "set," "mounted," "connected," and the like are to be understood in a broad sense, and may be directly connected or indirectly connected through an intermediate medium, for example; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.
Referring to fig. 1 to 6, a multi-channel optical signal detection circuit of a wavelength division semi-active switching protection device includes:
a power module 10 electrically connected to an external power source;
the input switching module 20 comprises a plurality of optical signal sensors PD and an analog switch U16 with a plurality of input ends, wherein the output ends of the optical signal sensors PD are electrically connected with the input end of an analog switch U16, and the power supply end of the analog switch U16 is electrically connected with the power supply module 10;
the amplifying module 30 is electrically connected with the power module 10 and the analog switch U16, and is used for amplifying the signal transmitted by the optical signal sensor PD;
and the main control module 40 is electrically connected to the amplification module 30 and the power supply module 10, and configured to collect data transmitted by the optical signal sensors PD and output different combined levels to switch the switch channels of the analog switch U16, so as to control different optical signal sensors PD to collect data.
The model of the analog switch U16 is set to MUX36S 16.
The multi-path optical signal detection circuit of the wavelength division semi-active switching protection device further comprises a voltage inversion chip U14, wherein the voltage input end of the voltage inversion chip U14 is electrically connected with the power module 10, and the voltage output end of the voltage inversion chip U14 is electrically connected with the analog switch U16.
The amplifying module 30 includes a LOG amplifier U21 with a LOG114 model, an input end of which is electrically connected to an output end of the analog switch U16, and an output end of which is electrically connected to the main control module 40.
The multi-path optical signal detection circuit of the wavelength division semi-active switching protection device further comprises a resistor R97 and a capacitor C65, one end of the resistor R97 is electrically connected with pins 9, 11 and 12 of a logarithmic amplifier U21, the other end of the resistor R97 is electrically connected with one end of the main control module 40 and one end of the capacitor C65, and the other end of the capacitor C65 is grounded.
The main control module 40 includes a main control chip UC1 with a model number of 8A8K64S4a 12.
The power module 10 includes a power chip U3 with a model of MP1470, an input end of which is electrically connected to an external power source, and an output end of which is electrically connected to the input switching module 20, the amplifying module 30, and the main control module 40, respectively.
The power module 10 further includes a delay start circuit 11 composed of resistors R12-R13 and a capacitor C17, one end of the resistor R12 is electrically connected to an external power source, the other end of the resistor R12 is electrically connected to one end of a capacitor C17 of the resistor R13 and an input end of the power chip U3, and the other end of the resistor R13 is electrically connected to the other end of the capacitor C17 and a ground terminal.
The utility model discloses in, input switching module 20 includes: the 16-path optical signal sensors PD1-PD16 are respectively connected with pins S1-S16 of an analog switch U16 with the model of MUX36S16, wherein a0-A3 control pin and an EN enable pin of the analog switch U16 are connected to pins 59-63 of a main control chip UC1 with the model of 8A8K64S4a12, a-5V voltage is output by a pin 5 of a voltage inversion chip U14 with the model of TP7660 and is connected to a VSS pin of the analog switch U16, a PD optical signal output by a pin 28 of the analog switch U16 is connected to a pin 3 of a logarithmic amplifier U21 with the model of LOG114, an amplified signal is output by a pin 12 Vo4 of the logarithmic amplifier U21, and is connected to a pin 3 of the main control chip UC1 through an RC filter circuit composed of a resistor R97 and a capacitor C65 for ADC conversion.
The utility model discloses in, analog switch U16 has constituted the timesharing switching circuit, and main control chip UC1 has constituted timesharing acquisition control circuit, and logarithmic amplifier U21 has constituted current-voltage logarithmic amplification converting circuit.
The working principle is as follows:
a main control chip UC1 of the main control module 40 outputs level combination control analog switches U16 through pins a0-A3 in turn to select corresponding switch channels, connects corresponding optical signal sensors PD1-PD16 to the input end of a logarithmic amplifier U21, and outputs voltage signals which are linear with optical signals after logarithmic conversion and amplification for collection by the main control chip UC 1; when the channel is switched, the main control chip UC1 pulls down the enable end EN of the analog switch U16 to close the channel, outputs the disconnected combined level to switch the switch channel of the analog switch U16, and then turns on the enable, at this time, pin 3 of the main control chip UC1 obtains a real-time optical power voltage signal, after the level is stabilized, AD acquisition is performed to average multiple values and convert the average values into a real optical power value, and the optical power values on the 16 optical signal sensors can be obtained by continuously switching in turn through the above-mentioned flow; of course, the utility model can realize the signal collection and control of the light signal sensors PD with different numbers according to the difference of the analog switches U16 with different numbers of input ends, and is not limited to the collection mode of 1: 16.
Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications and substitutions are included in the scope defined by the claims of the present application.
Claims (8)
1. A multi-path optical signal detection circuit of a wavelength division semi-active switching protection device is characterized by comprising:
a power supply module (10) electrically connected to an external power supply;
the input switching module (20) comprises a plurality of optical signal sensors (PD) and an analog switch U16 with a plurality of input ends, wherein the output ends of the optical signal sensors (PD) are electrically connected with the input end of an analog switch U16, and the power supply end of the analog switch U16 is electrically connected with the power supply module (10);
the amplifying module (30) is respectively electrically connected with the power supply module (10) and the analog switch U16 and is used for amplifying the signal transmitted by the optical signal sensor PD;
and the main control module (40) is respectively electrically connected with the amplification module (30) and the power supply module (10) and is used for collecting data transmitted by the optical signal sensors PD and outputting different combined levels to switch the switch channels of the analog switch U16 so as to control different optical signal sensors PD to collect data.
2. The multi-channel optical signal detection circuit of a wavelength division semi-active switching protection device as claimed in claim 1, wherein: the model of the analog switch U16 is set to MUX36S 16.
3. The multi-channel optical signal detection circuit of a wavelength division semi-active switching protection device as claimed in claim 1, wherein: the voltage-reversing circuit also comprises a voltage-reversing chip U14, the voltage input end of the voltage-reversing chip U14 is electrically connected with the power supply module (10), and the voltage output end of the voltage-reversing chip U14 is electrically connected with the analog switch U16.
4. The multi-channel optical signal detection circuit of a wavelength division semi-active switching protection device as claimed in claim 1, wherein: the amplifying module (30) comprises a LOG amplifier U21 with the model of LOG114, the input end of the LOG amplifier U21 is electrically connected with the output end of the analog switch U16, and the output end of the LOG amplifier U21 is electrically connected with the main control module (40).
5. The multi-channel optical signal detection circuit of a wavelength division semi-active switching protection device as claimed in claim 4, wherein: the high-voltage power supply further comprises a resistor R97 and a capacitor C65, one end of the resistor R97 is electrically connected with pins 9, 11 and 12 of the logarithmic amplifier U21, the other end of the resistor R97 is electrically connected with one end of the main control module (40) and one end of the capacitor C65, and the other end of the capacitor C65 is grounded.
6. The multi-channel optical signal detection circuit of a wavelength division semi-active switching protection device as claimed in claim 1, wherein: the main control module (40) comprises a main control chip UC1 with the model number of 8A8K64S4A 12.
7. The multi-channel optical signal detection circuit of a wavelength division semi-active switching protection device as claimed in claim 1, wherein: the power supply module (10) comprises a power supply chip U3 with the model of MP1470, the input end of the power supply chip U3 is electrically connected with an external power supply, and the output end of the power supply chip U3 is electrically connected with the input switching module (20), the amplifying module (30) and the main control module (40) respectively.
8. The multi-channel optical signal detection circuit of a wavelength division semi-active switching protection device as claimed in claim 7, wherein: the power supply module (10) further comprises a delay starting circuit (11) composed of resistors R12-R13 and a capacitor C17, one end of the resistor R12 is electrically connected with an external power supply, the other end of the resistor R12 is respectively electrically connected with one end of a capacitor C17 at one end of the resistor R13 and the input end of the power chip U3, and the other end of the resistor R13 is respectively electrically connected with the other end of the capacitor C17 and the ground end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022333053.9U CN213072679U (en) | 2020-10-19 | 2020-10-19 | Multi-path optical signal detection circuit of wavelength division semi-active switching protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022333053.9U CN213072679U (en) | 2020-10-19 | 2020-10-19 | Multi-path optical signal detection circuit of wavelength division semi-active switching protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213072679U true CN213072679U (en) | 2021-04-27 |
Family
ID=75561823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022333053.9U Active CN213072679U (en) | 2020-10-19 | 2020-10-19 | Multi-path optical signal detection circuit of wavelength division semi-active switching protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213072679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115844390A (en) * | 2022-12-24 | 2023-03-28 | 北京津发科技股份有限公司 | Near-infrared light acquisition circuit, method, system and device |
-
2020
- 2020-10-19 CN CN202022333053.9U patent/CN213072679U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115844390A (en) * | 2022-12-24 | 2023-03-28 | 北京津发科技股份有限公司 | Near-infrared light acquisition circuit, method, system and device |
| CN115844390B (en) * | 2022-12-24 | 2023-09-29 | 北京津发科技股份有限公司 | Near infrared light acquisition circuit, method, system and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213072679U (en) | Multi-path optical signal detection circuit of wavelength division semi-active switching protection device | |
| CN104020346A (en) | Micro-current signal extraction system | |
| CN104569571A (en) | High-speed multichannel current-voltage multiplexing collection unit and data collection method | |
| CN203554442U (en) | RSSI monitoring circuit | |
| CN101447830A (en) | Ethernet passive optical network (EPON) optical line terminal photoelectric module with digital supervision and reporting functions | |
| CN103323106A (en) | Light power testing system | |
| CN101344441A (en) | Multicenter simultaneously monitored distribution type optical fiber sensing equipment | |
| CN104237624A (en) | EV (electric vehicle) direct-current high-voltage sensor and sampling method thereof | |
| CN106618599A (en) | Wearable functional near-infrared spectral imaging system front end | |
| US8842986B2 (en) | Circuit and method for controlling multi-channel power | |
| US20170117847A1 (en) | Photovoltaic combiner box monitoring system | |
| CN103162839B (en) | Reading circuit for Nb5 N6 normal temperature Terahertz detector linear array | |
| TW200518444A (en) | Transimpedance amplifier with receive signal strength indicator | |
| CN212435671U (en) | High-speed photoelectric detector assembly with multichannel high-voltage synchronous isolation and strong driving capability | |
| CN201297965Y (en) | Distributed optical fiber sensing device simultaneously monitored by multiple channels | |
| CN113951833A (en) | Channel pluggable portable near-infrared brain function imaging system and method | |
| CN217656615U (en) | Gain-switchable weak photoelectric conversion circuit | |
| CN201937594U (en) | Optical module for Ethernet passive optical network (EPON) optical line terminal | |
| CN217957073U (en) | Optical power detection circuit and optical power meter | |
| CN210472150U (en) | Blood glucose meter capable of automatically transmitting measurement data | |
| CN1874160B (en) | Equipment for converting and insulating analog signals | |
| CN104734777B (en) | Optical signal detecting control circuit | |
| CN115656614A (en) | Multi-channel high-precision voltage acquisition circuit for airborne integrated control device | |
| CN110611513B (en) | Compatible type vehicle-mounted radio antenna interface circuit | |
| CN215268291U (en) | Optical tuning top receiving and analyzing circuit for semi-active wavelength division equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |