CN218156782U

CN218156782U - Optical fiber tester for informatization supervision

Info

Publication number: CN218156782U
Application number: CN202222760891.3U
Authority: CN
Inventors: 张旭晖
Original assignee: Guangzhou Sanuo Kechuang Information Service Co ltd
Current assignee: Guangzhou Sanuo Kechuang Information Service Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2022-12-27
Anticipated expiration: 2032-10-20

Abstract

The utility model belongs to the technical field of optical fiber detection, a fiber test appearance is used in information-based supervision is provided, including processor module, light source module, light power measurement module, keyboard module, liquid crystal display module and optical fiber interface, light source module and optical fiber interface electric connection, optical fiber interface and light power measurement module electric connection, processor module and keyboard module, liquid crystal display module electric connection, its characterized in that still includes constant voltage power supply module to and the input with the signal amplification module that light power measurement module's output is connected, the output of signal amplification module with the processor module is connected. The utility model is provided with the voltage-stabilized power supply module to supply power to the equipment, and has the advantages of low voltage difference, low power consumption, high stability and the like; on the other hand, the signal amplification module is arranged, so that signal amplification in photoelectric power measurement is realized, and the measurement precision is improved.

Description

Optical fiber tester for informatization supervision

Technical Field

The utility model belongs to the technical field of optical fiber detection, specific theory relates to an information-based manages and uses optical fiber tester.

Background

The optical fiber tester is a conventional tool for optical network maintenance, engineering installation and device manufacturers, is widely applied to scenes such as telecommunication, mobile, unicom, radio and television, electric power, device manufacturers and the like, and is a commonly used physical performance tester in the construction process of an informatization monitoring system. The utility model of China 201621062458.0 discloses a portable optical fiber tester, which comprises a processor, a light source module, an optical power measuring module, a keyboard module, a liquid crystal display module and an optical fiber interface, and has the advantages of convenience, practicality, portability and the like, however, the portable handheld optical fiber tester generally adopts a battery for power supply, theoretically, the lower the power consumption of the whole tester is, the better the power consumption is, the technical scheme is not designed based on a power circuit of the portable optical fiber tester, and technicians in the field are difficult to judge whether the power consumption design meets the portable requirement; on the other hand, the optical power measurement module in the technical scheme only adopts the structural design of a conventional optical signal receiving circuit, does not consider the signal amplification processing requirement of digital transmission, and is easy to reduce the accuracy of optical power measurement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, realize convenient information ization and manage and use fiber optic tester to solve the problem that prior art exists.

In order to realize the purpose, the utility model discloses the technical scheme who takes as follows:

an optical fiber tester for informatization supervision comprises a processor module, a light source module, an optical power measuring module, a keyboard module, a liquid crystal display module and an optical fiber interface, wherein the light source module is electrically connected with the optical fiber interface; the voltage stabilizing power supply module comprises a low dropout regulator TPS7348, a capacitor C1 and a capacitor C2, wherein a pin 1, a pin 2 and a pin 8 of the low dropout regulator TPS73633 are grounded, one end of the capacitor C1 is connected with a voltage input end, the other end of the capacitor C1 is grounded, one end of the capacitor C2 is connected with a voltage output end, the other end of the capacitor C2 is grounded, a pin 3 and a pin 4 of the low dropout regulator TPS7348 are connected with the voltage input end, and a pin 5 and a pin 6 are connected with the voltage output end.

Further, the signal amplification module includes chip MAX9945, and chip MAX 9945's foot 15 connects the output of optical power measurement module, and foot 5 and 6 connect the processor module, and foot 2 connects capacitor C7, and foot 3 and foot 4 ground connection, 14 connect resistance R3 and the electric capacity C3 of establishing ties of foot, and foot 15 connects resistance R4 and the electric capacity C4 of establishing ties, and foot 16 connects resistance R5 and the electric capacity C5 of establishing ties, and foot 10 connects electric capacity C6, and foot 11 connects resistance R6.

Further, the optical power measurement module includes light emitting diode D1, operational amplifier OP1, resistance R8, light emitting diode D1's one end connecting resistance R8's one end, the other end ground connection, operational amplifier OP 1's foot 3 ground connection, foot 2 is connected with resistance R8's one end, and foot 1 is connected with resistance R8's the other end.

Further, the light source module comprises an operational amplifier OP2, a resistor R9, a resistor R10, a triode Q1, a triode Q2, and a diode D2; a pin 3 of the operational amplifier OP2 is connected with a base electrode of the triode Q1, a pin 2 of the operational amplifier OP2 is connected with a resistor R9 and a resistor R10, a collector electrode of the triode Q1 is connected with the diode D2, an emitting electrode of the triode Q1 is connected with a base electrode of the triode Q2, and a collector electrode of the triode Q2 is connected with the diode D2.

Further, the processor module adopts an STC89C51RC type single chip microcomputer.

Compared with the prior art, the utility model discloses possess following beneficial effect:

(1) The utility model discloses having add the low dropout constant voltage power supply module that adopts TPS73633 to constitute on prior art's basis, it has low dropout, low-power consumption, stability advantage such as high, is particularly useful for adopting the portable optical fiber tester of battery powered to the not enough that prior art exists has been solved effectively.

(2) The utility model discloses having carried out the setting of circuit design and signal amplification module to light power measurement module, on the one hand, simplified light power measurement module's circuit structure, on the other hand combines the design of signal amplification module, adopts chip MAX9945, realizes that the light power measurement accuracy of equipment has been improved to amplification processing, filtering noise, frequency compensation etc. of signal.

Drawings

Fig. 1 is a schematic block diagram of the present invention.

Fig. 2 is a schematic circuit diagram of the voltage-stabilized power supply module of the present invention.

Fig. 3 is a schematic circuit diagram of the middle signal amplifying module of the present invention.

Fig. 4 is a schematic circuit diagram of the optical power measuring module of the present invention.

Fig. 5 is a schematic circuit diagram of the middle light source module of the present invention.

Detailed Description

In order to make the present invention more clear to those skilled in the art, the present invention will be further described in detail with reference to the following embodiments. It should be understood that the following specific embodiments are only for explaining the present invention, and it is convenient to understand that the technical solutions provided by the present invention are not limited to the technical solutions provided by the following embodiments, and the technical solutions provided by the embodiments should not limit the protection scope of the present invention.

Examples

As shown in fig. 1 to 5, this embodiment provides an optical fiber tester for informatization monitoring, which mainly includes a processor module, a light source module, an optical power measurement module, a keyboard module, a liquid crystal display module and an optical fiber interface, the above structures can all adopt the mature structure and the connection mode between each module in the prior art, so it is not described herein, the improvement point of this embodiment is mainly based on the above structure, a regulated power supply module and a signal amplification module are added, the low power consumption design of a power supply circuit is realized through the regulated power supply module, so as to match the low power consumption design requirement of a power supply required by the portable optical fiber tester powered by a battery, the amplification processing of signals, noise filtering, frequency compensation and the like are realized through the signal amplification module, and the optical power measurement precision of the device is improved.

In this embodiment, the voltage stabilizing power supply module includes a low dropout regulator TPS7348, a capacitor C1 and a capacitor C2, a pin 1, a pin 2 and a pin 8 of the low dropout regulator TPS73633 are grounded, one end of the capacitor C1 is connected to a voltage input terminal, the other end is grounded, one end of the capacitor C2 is connected to a voltage output terminal, the other end is grounded, a pin 3 and a pin 4 of the low dropout regulator TPS7348 are connected to the voltage input terminal, and a pin 5 and a pin 6 are connected to the voltage output terminal; TPS7348 is a low-dropout micro-power-consumption voltage stabilizer, which has the advantages of extremely low dropout, low quiescent current, low sleep state current, etc., under the condition of undervoltage, the RESET output pin is switched on, the RESET signal is pulled down, the RESET output pin keeps low level during the duration of undervoltage, once the undervoltage condition disappears, the overtime of 200ms is started once, and after the delay, the RESET pin changes high level.

In this embodiment, the signal amplification module includes a chip MAX9945, a pin 15 of the chip MAX9945 is connected to an output end of the optical power measurement module, a pin 5 and a pin 6 are connected to the processor module, a pin 2 is connected to a capacitor C7, a pin 3 and a pin 4 are grounded, a pin 14 is connected to a resistor R3 and a capacitor C3 which are connected in series, a pin 15 is connected to a resistor R4 and a capacitor C4 which are connected in series, a pin 16 is connected to a resistor R5 and a capacitor C5 which are connected in series, a pin 10 is connected to a capacitor C6, and a pin 11 is connected to a resistor R6; MAX9945 is a series of high-voltage and low-power consumption operational amplifiers which are introduced by Maxim, are designed for the application of power consumption and space shortage, have extremely high precision and extremely low noise, and are widely applied to sensor signal conditioning, high-performance industrial instruments and loop power supply systems.

Based on the design of the signal amplification module, in a further preferred scheme, the optical power measurement module of this embodiment includes a light emitting diode D1, an operational amplifier OP1, and a resistor R8, one end of the light emitting diode D1 is connected to one end of the resistor R8, and the other end is grounded, a pin 3 of the operational amplifier OP1 is grounded, a pin 2 is connected to one end of the resistor R8, and a pin 1 is connected to the other end of the resistor R8.

In order to make the technical scheme easier to understand, the following briefly introduces the composition of the light source module, specifically as follows: the circuit comprises an operational amplifier OP2, a resistor R9, a resistor R10, a triode Q1, a triode Q2 and a diode D2; a pin 3 of the operational amplifier OP2 is connected with a base electrode of the triode Q1, a pin 2 of the operational amplifier OP2 is connected with a resistor R9 and a resistor R10, a collector electrode of the triode Q1 is connected with the diode D2, an emitting electrode of the triode Q1 is connected with a base electrode of the triode Q2, and a collector electrode of the triode Q2 is connected with the diode D2.

In this embodiment, the processor module adopts an STC89C51RC type single chip microcomputer, and further includes a peripheral circuit structure matched with the processor module, and a schematic circuit diagram of the processor module belongs to a conventional mature structure, so details are not described herein, compared with an STC89R52 type single chip microcomputer adopted in the prior art, the STC89C51RC type single chip microcomputer and the STC89R52 type single chip microcomputer belong to a homologous single chip microcomputer, and have the advantages of low cost, good stability and the like, and more preferably, the STC89C51RC series single chip microcomputer is a compatible 8051 core single chip microcomputer with a single clock/machine period (1T), and is a new generation 8051 single chip microcomputer with high speed/low power consumption.

The above is the preferred embodiment of the present invention. It should be noted that, without departing from the design principle and technical solution of the present invention, a person skilled in the art can make several modifications, and these modifications should also be considered as the protection scope of the present invention.

Claims

1. An optical fiber tester for informatization supervision comprises a processor module, a light source module, an optical power measuring module, a keyboard module, a liquid crystal display module and an optical fiber interface, wherein the light source module is electrically connected with the optical fiber interface; the voltage-stabilized power supply module comprises a low dropout voltage stabilizer TPS7348, a capacitor C1 and a capacitor C2, wherein a pin 1, a pin 2 and a pin 8 of the low dropout voltage stabilizer TPS73633 are grounded, one end of the capacitor C1 is connected with a voltage input end, the other end of the capacitor C1 is grounded, one end of the capacitor C2 is connected with a voltage output end and the other end of the capacitor C2 is grounded, a pin 3 and a pin 4 of the low dropout voltage stabilizer TPS7348 are connected with the voltage input end, and a pin 5 and a pin 6 are connected with the voltage output end.

2. The optical fiber tester for automated supervision according to claim 1, characterized in that: the signal amplification module includes chip MAX9945, and chip MAX 9945's foot 15 connects the output of optical power measurement module, and foot 5 and 6 connect the processor module, and foot 2 connects capacitor C7, and foot 3 and foot 4 ground connection, 14 connect the resistance R3 and the electric capacity C3 of series connection of foot, and foot 15 connects the resistance R4 and the electric capacity C4 of series connection, and foot 16 connects the resistance R5 and the electric capacity C5 of series connection, and foot 10 connects electric capacity C6, and foot 11 connects resistance R6.

3. The optical fiber tester for automated supervision according to claim 2, characterized in that: the optical power measuring module comprises a light-emitting diode D1, an operational amplifier OP1 and a resistor R8, one end of the light-emitting diode D1 is connected with one end of the resistor R8, the other end of the resistor R8 is grounded, a pin 3 of the operational amplifier OP1 is grounded, a pin 2 is connected with one end of the resistor R8, and a pin 1 is connected with the other end of the resistor R8.

4. The fiber optic tester for informatization management according to claim 3, wherein: the light source module comprises an operational amplifier OP2, a resistor R9, a resistor R10, a triode Q1, a triode Q2 and a diode D2; a pin 3 of the operational amplifier OP2 is connected with a base electrode of the triode Q1, a pin 2 of the operational amplifier OP2 is connected with a resistor R9 and a resistor R10, a collector electrode of the triode Q1 is connected with the diode D2, an emitting electrode of the triode Q1 is connected with a base electrode of the triode Q2, and a collector electrode of the triode Q2 is connected with the diode D2.

5. The optical fiber tester for informatization supervision according to any one of claims 1 to 4, characterized in that: the processor module adopts an STC89C51RC type single chip microcomputer.