CN207835453U - A kind of special 2M optical signal detecting devices of electric power - Google Patents

Abstract

The utility model discloses a special 2M optical signal detection device for electric power, which is composed of a photoelectric conversion module, a power supply module and a 2M electrical signal test instrument, the photoelectric conversion module is composed of a photoelectric conversion amplifier circuit and a filter amplifier circuit, the power supply The modules are respectively electrically connected to the power supply input ends of the pre-stage operational amplifier, the first operational amplifier and the second operational amplifier. The utility model has the advantages that: the detection information of the 2M optical signal is obtained indirectly through the detection data of the 2M electrical signal test instrument, thereby realizing It realizes the detection of 2M optical signal, and has high detection accuracy and good anti-interference ability.

Description

A special 2M optical signal detection device for electric power

technical field

The utility model relates to the technical field of communication detection devices, in particular to the technical field of power communication 2M optical signal detection.

Background technique

2M optical signals are widely used in power systems, including power dispatching, relay protection, communication information, and power marketing. With the development of technology, new board devices have appeared on the market, which can realize 2M optical signal transmission. Traditional 2M electrical signal test instruments are used to detect signal indicators such as bit error rate, channel available time, line rate, signal frequency deviation, background error, bit error and delay of 2M electrical signals. However, using traditional 2M electrical signal test instruments The information structure of the optical signal cannot be analyzed, so the above-mentioned 2M optical signal indicators cannot be detected, so the quality of the 2M service channel cannot be explained, and the promotion and application of the above-mentioned new board devices cannot be supported by data. However, the traditional optical signal detection instrument can only detect the strength of the optical signal, that is, the size of the optical power, and cannot detect the technical index of the 2M signal.

Utility model content

The purpose of this utility model is to provide a special 2M optical signal detection device for electric power that can detect 2M optical signals, has high detection accuracy, and has good anti-interference ability in order to solve the above-mentioned deficiencies.

The technical solution that the utility model adopts in order to solve the above technical problems is as follows:

A special 2M optical signal detection device for electric power, which is composed of a photoelectric conversion module, a power supply module and a 2M electrical signal test instrument. The photoelectric conversion module is composed of a photoelectric conversion amplifier circuit and a filter amplifier circuit. A diode, a pre-stage operational amplifier, a first resistor, a second resistor and a third resistor, the anode of the photodiode is grounded through the first resistor, the negative pole of the photodiode is electrically connected to the non-inverting input terminal of the pre-stage operational amplifier, and the pre-stage The inverting input terminal of the operational amplifier is electrically connected with the anode of the first resistor and the photodiode, one end of the second resistor is electrically connected with the cathode of the photodiode, the other end of the second resistor is grounded, and one end of the third resistor is connected with the anode of the photodiode. The non-inverting input terminal of the pre-stage operational amplifier is electrically connected, and the other end of the third resistor is electrically connected with the output end of the pre-stage operational amplifier. The filter amplifier circuit is composed of the first operational amplifier, the fourth resistor, the fifth resistor, and the first capacitor. , the second capacitor, the sixth resistor, the seventh resistor, the second operational amplifier, the third capacitor, the fourth capacitor, the eighth resistor, the ninth resistor, the tenth resistor and the eleventh resistor, the first operational amplifier The non-inverting input terminal of the first operational amplifier is electrically connected to the output terminal of the pre-stage operational amplifier through the fourth resistor and the fifth resistor, the inverting input terminal of the first operational amplifier is grounded through the sixth resistor, and one end of the first capacitor is connected to the fourth resistor. The resistor is electrically connected to the fifth resistor, the other end of the first capacitor is electrically connected to the output end of the first operational amplifier, one end of the seventh resistor is electrically connected to the output end of the first operational amplifier, and the other end of the seventh resistor is electrically connected to the output end of the first operational amplifier. The inverting input end of the first operational amplifier is electrically connected to the sixth resistor, one end of the second capacitor is electrically connected to the fifth resistor and the non-inverting input end of the first operational amplifier, the other end of the second capacitor is grounded, and the second capacitor is connected to the ground. The noninverting input terminals of the two operational amplifiers are electrically connected to the output terminal of the first operational amplifier through the third capacitor and the fourth capacitor respectively, the inverting input terminal of the second operational amplifier is grounded through the tenth resistor, and the eighth resistor is grounded. One end is electrically connected to the third capacitor and the fourth capacitor, the other end of the eighth resistor is grounded, one end of the ninth resistor is electrically connected to the fourth capacitor and the non-inverting input end of the second operational amplifier, and the other end of the ninth resistor is connected to the The output end of the second operational amplifier is electrically connected, and one end of the eleventh resistor is electrically connected with the inverting input end of the second operational amplifier and the tenth resistor, and the other end of the eleventh resistor is connected with the output end of the second operational amplifier. Electrically connected, the output end of the second operational amplifier is electrically connected to the 2M electrical signal test instrument, and the power supply module is electrically connected to the power input ends of the pre-stage operational amplifier, the first operational amplifier and the second operational amplifier respectively.

The photosensitive diode is a silicon photosensitive diode.

The power module is a 220V to 48V power module.

The beneficial effects that the utility model can achieve by adopting the above-mentioned technical solutions are: the 2M optical signal is converted into a 2M electrical signal by the photoelectric conversion amplifier circuit of the photoelectric conversion module, and the 2M electrical signal is amplified, and then the large After part of the noise is filtered, the 2M electrical signal is further amplified and then input to the 2M electrical signal tester, the 2M electrical signal is detected by the 2M electrical signal tester, and the 2M optical signal is obtained indirectly through the detection data of the 2M electrical signal tester detection information, so as to realize the detection of 2M optical signals, and the detection accuracy is high, and it has good anti-interference ability.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a circuit diagram of the photoelectric conversion module.

Detailed ways

As shown in Figure 1, a special 2M optical signal detection device for electric power is composed of a photoelectric conversion module, a power module and a 2M electrical signal test instrument, as shown in Figure 2, the photoelectric conversion module is composed of a photoelectric conversion amplifier circuit and a filter The amplifying circuit is constituted, and the photoelectric conversion amplifying circuit is composed of a photodiode PD, a pre-stage operational amplifier IC0, a first resistor R1, a second resistor R2 and a third resistor R3, and the anode of the photodiode PD is grounded through the first resistor R1 , the negative pole of the photodiode PD is electrically connected to the non-inverting input terminal of the pre-stage operational amplifier IC0, the inverting input terminal of the pre-stage operational amplifier IC0 is electrically connected to the positive pole of the first resistor R1 and the photodiode PD, and the second resistor R2 One end is electrically connected to the cathode of the photodiode PD, the other end of the second resistor R2 is grounded, the photodiode PD can be a silicon photodiode, one end of the third resistor R3 is electrically connected to the non-inverting input end of the pre-stage operational amplifier IC0, the second The other end of the three resistors R3 is electrically connected to the output end of the pre-stage operational amplifier IC0.

The filter amplifier circuit is composed of the first operational amplifier IC1, the fourth resistor R4, the fifth resistor R5, the first capacitor C1, the second capacitor C2, the sixth resistor R6, the seventh resistor R7, the second operational amplifier IC2, the third Capacitor C3, fourth capacitor C4, eighth resistor R8, ninth resistor R9, tenth resistor R10 and eleventh resistor R11, the non-inverting input terminal of the first operational amplifier IC1 passes through the fourth resistor R4 and the fifth resistor R5 is electrically connected to the output terminal of the pre-stage operational amplifier IC0, the inverting input terminal of the first operational amplifier IC1 is grounded through the sixth resistor R6, and one end of the first capacitor C1 is connected to the fourth resistor R4 and the fifth resistor R5 Electrically connected, the other end of the first capacitor C1 is electrically connected to the output end of the first operational amplifier IC1, one end of the seventh resistor R7 is electrically connected to the output end of the first operational amplifier IC1, and the other end of the seventh resistor R7 is electrically connected to the output end of the first operational amplifier IC1. The inverting input end of the first operational amplifier IC1 is electrically connected to the sixth resistor R6, one end of the second capacitor C2 is electrically connected to the fifth resistor R5 and the non-inverting input end of the first operational amplifier IC1, and the other end of the second capacitor C2 One end is grounded.

The non-inverting input terminal of the second operational amplifier IC2 is electrically connected to the output terminal of the first operational amplifier IC1 through the third capacitor C3 and the fourth capacitor C4 respectively, and the inverting input terminal of the second operational amplifier IC2 is connected through the tenth resistor R10 is grounded, one end of the eighth resistor R8 is electrically connected to the third capacitor C3 and the fourth capacitor C4, the other end of the eighth resistor R8 is grounded, one end of the ninth resistor R9 is connected to the fourth capacitor C4 and the second computing The non-inverting input end of the amplifier IC2 is electrically connected, the other end of the ninth resistor R9 is electrically connected to the output end of the second operational amplifier IC2, and one end of the eleventh resistor R11 is electrically connected to the inverting input end of the second operational amplifier IC2 and the second operational amplifier IC2. The tenth resistor R10 is electrically connected, the other end of the eleventh resistor R11 is electrically connected to the output terminal Uo of the second operational amplifier IC2, and the output terminal Uo of the second operational amplifier IC2 is electrically connected to the 2M electrical signal testing instrument, and the 2M electrical signal test The instrument can be purchased directly from the market. The power supply module is electrically connected to the power input terminal VCC of the pre-stage operational amplifier IC0, the first operational amplifier IC1 and the second operational amplifier IC2. The 48V power supply module supplies power to the photoelectric conversion module through the power supply module.

When the device is working, the 2M optical signal is converted into a 2M electrical signal through the photoelectric conversion amplifier circuit of the photoelectric conversion module, and the 2M electrical signal is amplified, and then most of the noise is filtered through the filter amplifier circuit, and the 2M electrical signal Input the 2M electrical signal tester into the 2M electrical signal tester, detect the 2M electrical signal through the 2M electrical signal tester, and indirectly obtain the detection information of the 2M optical signal through the detection data of the 2M electrical signal tester.

Claims (3)

1. A special 2M optical signal detection device for electric power, characterized in that: it is made of a photoelectric conversion module, a power supply module and a 2M electrical signal testing instrument, and the photoelectric conversion module is made of a photoelectric conversion amplifying circuit and a filter amplifying circuit, the described The photoelectric conversion amplifying circuit is made up of photosensitive diode, pre-stage operational amplifier, first resistance, second resistance and the 3rd resistance, the anode of described photosensitive diode is grounded through first resistance, the negative pole of photosensitive diode and the noninverting input of pre-stage operational amplifier Terminals are electrically connected, the inverting input terminal of the pre-stage operational amplifier is electrically connected to the positive pole of the first resistor and the photodiode, one end of the second resistor is electrically connected to the negative pole of the photodiode, and the other end of the second resistor is grounded. One end of the third resistor is electrically connected to the non-inverting input terminal of the pre-stage operational amplifier, and the other end of the third resistor is electrically connected to the output terminal of the pre-stage operational amplifier. The filter amplifier circuit is composed of the first operational amplifier, the fourth resistor, and the first operational amplifier. Five resistors, the first capacitor, the second capacitor, the sixth resistor, the seventh resistor, the second operational amplifier, the third capacitor, the fourth capacitor, the eighth resistor, the ninth resistor, the tenth resistor and the eleventh resistor, The non-inverting input terminal of the first operational amplifier is electrically connected to the output terminal of the pre-stage operational amplifier through the fourth resistor and the fifth resistor, the inverting input terminal of the first operational amplifier is grounded through the sixth resistor, and the first One end of the capacitor is electrically connected to the fourth resistor and the fifth resistor, the other end of the first capacitor is electrically connected to the output end of the first operational amplifier, one end of the seventh resistor is electrically connected to the output end of the first operational amplifier, and the second end is electrically connected to the output end of the first operational amplifier. The other end of the seven resistors is electrically connected to the inverting input end of the first operational amplifier and the sixth resistor, one end of the second capacitor is electrically connected to the fifth resistor and the non-inverting input end of the first operational amplifier, and the other end of the second capacitor One end is grounded, the non-inverting input terminal of the second operational amplifier is electrically connected to the output terminal of the first operational amplifier through the third capacitor and the fourth capacitor respectively, and the inverting input terminal of the second operational amplifier is grounded through the tenth resistor, One end of the eighth resistor is electrically connected to the third capacitor and the fourth capacitor, the other end of the eighth resistor is grounded, one end of the ninth resistor is electrically connected to the fourth capacitor and the non-inverting input end of the second operational amplifier, and the second The other end of the nine resistors is electrically connected to the output end of the second operational amplifier, one end of the eleventh resistor is electrically connected to the inverting input end of the second operational amplifier and the tenth resistor, and the other end of the eleventh resistor is electrically connected to the first The output terminals of the two operational amplifiers are electrically connected, the output terminals of the second operational amplifier are electrically connected with the 2M electric signal test instrument, and the power supply module is electrically connected with the power input terminals of the pre-stage operational amplifier, the first operational amplifier and the second operational amplifier respectively. connect. 2. A 2M optical signal detection device dedicated for electric power according to claim 1, characterized in that: the photosensitive diode is a silicon photodiode. 3. A 2M optical signal detection device dedicated to electric power according to claim 1 or 2, wherein the power module is a 220V to 48V power module.