Lightning instrument

Abstract

The utility model discloses a thunder and lightning instrument, which comprises a power supply circuit, an operational amplifier circuit, a thunder and lightning signal amplification circuit, an ADC (Analog to Digital Converter) signal analysis circuit, a main control chip U7 and a plurality of thunder and lightning signal intensity indicating lamps, and is characterized in that the thunder and lightning signal amplification circuit comprises a first signal amplification circuit and a second signal amplification circuit; the first signal amplification circuit comprises a first primary signal amplification circuit, and the second signal amplification circuit comprises a second primary signal amplification circuit. According to the utility model, through different multiples of the first-stage signal amplification circuit, the intensity of a lightning signal is measured by using a difference value, and residents in a detection area can be warned or informed.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning monitoring and early warning equipment, in particular to a lightning instrument. Background Art

[0002] With the continuous increase of lightning disasters, more and more units, collectives and organizations have begun to realize the importance of lightning protection, and have adopted complete lightning protection measures in actual work, such as lightning rods, grounding systems, surge protection systems, etc.

[0003] However, the current lightning monitoring system cannot intuitively present the strength of lightning signals to users, resulting in poor user experience. Utility Model Content

[0004] The main purpose of the utility model is to provide a lightning instrument, which aims to intuitively present the strength of lightning signals to users through indicator lights, thereby improving user experience.

[0005] To achieve the above-mentioned purpose, the utility model provides a lightning instrument, including a power supply circuit, an operational amplifier circuit, a lightning signal amplification circuit, an ADC signal analysis circuit, a main control chip U7 and a plurality of lightning signal strength indicator lights, wherein the lightning signal amplification circuit includes a first signal amplification circuit and a second signal amplification circuit, the first signal amplification circuit includes a first-level signal amplification circuit, and the second signal amplification circuit includes a second-level signal amplification circuit.

[0006] The output end of the power supply circuit is connected to the input end of the operational amplifier circuit, the input ends of the first-level signal amplifier circuit and the second-level signal amplifier circuit are connected to the output end of the operational amplifier circuit, the output ends of the first-level signal amplifier circuit and the second-level signal amplifier circuit are connected to the input end of the ADC signal analysis circuit, the output end of the ADC signal analysis circuit is connected to the input end of the main control chip U7, and the output end of the main control chip U7 is connected to the several lightning signal strength indicator lights.

[0007] A further technical solution of the utility model is that the first-stage signal amplification circuit includes an inductor L1 and a signal amplifier U2A, one end of the inductor L1 and pin 2 of the signal amplifier U2A are connected to the output end of the operational amplifier circuit, and the other end of the inductor L1 is connected to pin 3 of the signal amplifier U2A.

[0008] A further technical solution of the utility model is that the second-stage signal amplification circuit includes an inductor L2 and a signal amplifier U4A, one end of the inductor L2 and pin 2 of the signal amplifier U4A are connected to the output end of the operational amplifier circuit, and the other end of the inductor L2 is connected to pin 3 of the signal amplifier U4A.

[0009] A further technical solution of the present invention is that the amplification factor of the signal amplifier U4A is twice that of the signal amplifier U2A.

[0010] A further technical solution of the utility model is that the first signal amplifying circuit also includes a first and second signal amplifying circuit, and the first and second signal amplifying circuit includes a signal amplifier U2B, and pin 6 of the signal amplifier U2B is connected to pin 1 of the signal amplifier U2A, and pin 5 of the signal amplifier U2B is connected to the output end of the operational amplifier circuit.

[0011] A further technical solution of the utility model is that the first signal amplifying circuit further includes an adjustable resistor RT1, one end of the adjustable resistor RT1 is connected to pin 1 of the signal amplifier U2A, and the other end is connected to pin 6 of the signal amplifier U2B.

[0012] A further technical solution of the utility model is that the second signal amplifying circuit also includes a second secondary signal amplifying circuit, and the second secondary signal amplifying circuit includes a signal amplifier U4B, and pin 6 of the signal amplifier U4B is connected to pin 1 of the signal amplifier U4A, and pin 5 of the signal amplifier U4B is connected to the output end of the operational amplifier circuit.

[0013] A further technical solution of the utility model is that the second signal amplifying circuit further includes an adjustable resistor RT2, one end of the adjustable resistor RT2 is connected to pin 1 of the signal amplifier U4A, and the other end is connected to pin 6 of the signal amplifier U4B.

[0014] A further technical solution of the present invention is that the first-stage signal amplifying circuit further includes a diode CR2 disposed at both ends of the inductor L1; and the second-stage signal amplifying circuit further includes a diode CR5 disposed at both ends of the inductor L2.

[0015] A further technical solution of the utility model is that the ADC signal analysis circuit includes a chip U5, the input end of the chip U5 is connected to the output end of the operational amplifier circuit, and the output end of the chip U5 is connected to the input end of the main control chip U7.

[0016] The beneficial effects of the lightning instrument of the utility model are:

[0017] The utility model, through the above technical scheme, includes a power supply circuit, an operational amplifier circuit, a lightning signal amplifier circuit, an ADC signal analysis circuit, a main control chip U7 and a plurality of lightning signal strength indicator lights, wherein the lightning signal amplifier circuit includes a first signal amplifier circuit and a second signal amplifier circuit, the first signal amplifier circuit includes a first-level signal amplifier circuit, and the second signal amplifier circuit includes a second-level signal amplifier circuit; the output end of the power supply circuit is connected to the input end of the operational amplifier circuit, the input ends of the first-level signal amplifier circuit and the second-level signal amplifier circuit are connected to the output end of the operational amplifier circuit, the output ends of the first-level signal amplifier circuit and the second-level signal amplifier circuit are connected to the input end of the ADC signal analysis circuit, the output end of the ADC signal analysis circuit is connected to the input end of the main control chip U7, and the output end of the main control chip U7 is connected to a plurality of lightning signal strength indicator lights, and the strength of the lightning signal can be measured by using the difference value through the different multiples of the first-level signal amplifier circuit and the second-level signal amplifier circuit, which can be used to warn or inform residents in the detection area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 1 is a schematic diagram of the circuit structure of the first signal amplifying circuit;

[0020] Figure 2 is a circuit structure schematic diagram of the second signal amplifying circuit;

[0021] Figure 3 It is a schematic diagram of the circuit structure of chip U5;

[0022] Figure 4 This is a schematic diagram of the circuit structure of the main control chip U7;

[0023] Figure 5 It is a circuit structure diagram of a power supply circuit;

[0024] Figure 6 It is a circuit structure diagram of an operational amplifier circuit.

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] The utility model provides a lightning instrument which can be held in hand and uses the difference between the first-stage amplification circuit and the second-stage amplification circuit to measure the strength of the lightning signal and estimate the distance of the lightning, which can be used to warn or inform residents in the detection area.

[0030] For details, please refer to Figures 1 to 6 The preferred embodiment of the lightning instrument of the utility model includes a power supply circuit, an operational amplifier circuit, a lightning signal amplifying circuit, an ADC signal analysis circuit, a main control chip U7 and a plurality of lightning signal strength indicator lights, wherein the lightning signal amplifying circuit includes a first signal amplifying circuit and a second signal amplifying circuit, the first signal amplifying circuit includes a first-level signal amplifying circuit, and the second signal amplifying circuit includes a second-level signal amplifying circuit.

[0031] The output end of the power supply circuit is connected to the input end of the operational amplifier circuit, the input ends of the first-level signal amplifier circuit and the second-level signal amplifier circuit are connected to the output end of the operational amplifier circuit, the output ends of the first-level signal amplifier circuit and the second-level signal amplifier circuit are connected to the input end of the ADC signal analysis circuit, the output end of the ADC signal analysis circuit is connected to the input end of the main control chip U7, and the output end of the main control chip U7 is connected to a number of lightning signal strength indicator lights.

[0032] Please refer to Figure 1 In this embodiment, the first-stage signal amplification circuit includes an inductor L1 and a signal amplifier U2A. One end of the inductor L1 and pin 2 of the signal amplifier U2A are connected to the output end of the operational amplifier circuit, and the other end of the inductor L1 is connected to pin 3 of the signal amplifier U2A.

[0033] Please refer to Figure 2 In this embodiment, the second-stage signal amplification circuit includes an inductor L2 and a signal amplifier U4A. One end of the inductor L2 and pin 2 of the signal amplifier U4A are connected to the output end of the operational amplifier circuit, and the other end of the inductor L2 is connected to pin 3 of the signal amplifier U4A.

[0034] In this embodiment, the amplification factor of the signal amplifier U4A is twice that of the signal amplifier U2A.

[0035] For further information, please refer to Figure 1 In this embodiment, the first signal amplification circuit also includes a first and a second signal amplification circuit, and the first and the second signal amplification circuit include a signal amplifier U2B, and pin 6 of the signal amplifier U2B is connected to pin 1 of the signal amplifier U2A, and pin 5 of the signal amplifier U2B is connected to the output end of the operational amplifier circuit.

[0036] The first signal amplifying circuit further includes an adjustable resistor RT1 , one end of the adjustable resistor RT1 is connected to pin 1 of the signal amplifier U2A, and the other end of the adjustable resistor RT1 is connected to pin 6 of the signal amplifier U2B.

[0037] Please refer to Figure 2 The second signal amplifying circuit also includes a second secondary signal amplifying circuit, and the second secondary signal amplifying circuit includes a signal amplifier U4B, wherein pin 6 of the signal amplifier U4B is connected to pin 1 of the signal amplifier U4A, and pin 5 of the signal amplifier U4B is connected to the output end of the operational amplifier circuit.

[0038] The second signal amplifying circuit further includes an adjustable resistor RT2, one end of the adjustable resistor RT2 is connected to pin 1 of the signal amplifier U4A, and the other end of the adjustable resistor RT2 is connected to pin 6 of the signal amplifier U4B.

[0039] The first-stage signal amplifying circuit further includes a diode CR2 disposed at both ends of the inductor L1 ; the second-stage signal amplifying circuit further includes a diode CR5 disposed at both ends of the inductor L2 .

[0040] The ADC signal analysis circuit includes a chip U5. The circuit structure of the chip U5 is as follows: Figure 3 As shown, the input end of the chip U5 is connected to the output end of the operational amplifier circuit, and the output end of the chip U5 is connected to the input end of the main control chip U7. The circuit structure of the main control chip U7 is as shown in FIG. Figure 4 shown.

[0041] In this embodiment, the circuit structure of the power supply circuit is as follows: Figure 5 shown.

[0042] The power supply circuit outputs a power supply VPP with the same voltage as the battery through the transistor Q1, and VPP provides power for the subsequent operational amplifier circuit.

[0043] VPP is stabilized by resistors R72 and CR6 to generate a stable 5.1V reference power supply. The 5.1V reference power supply outputs a stable VCC power supply with good load capacity through U1D to provide power supply for the next ADC power supply and subsequent circuit signal input voltage.

[0044] In this embodiment, the circuit structure of the operational amplifier circuit is as follows: Figure 6 shown.

[0045] VCC passes through the circuit composed of resistor R39, resistor R40 and U1A, and finally outputs a stable VCC-2 power supply to provide the reference voltage for the operational amplifier circuit signal input of the subsequent circuit.

[0046] The following combination Figures 1 to 4 The working principle of the utility model lightning instrument is further elaborated in detail.

[0047] Please refer to Figure 1 and Figure 2 :

[0048] 1. Primary amplification: The lightning signal is induced by the coils of the inductor L1 and the inductor L2 in the circuit to generate a weak voltage signal, which is then amplified by the signal amplifiers U2A and U4A. The inductor L1 signal is amplified 17.79 times by the signal amplifier U2A circuit, and the inductor L2 signal is amplified 35.587 times by the signal amplifier U4A circuit.

[0049] 2. Secondary amplification: The signals of inductor L1 and inductor L2 are amplified again through signal amplifiers U2B and U4B respectively, and the amplified signals can be adjusted to appropriate amplification factors through adjustable resistors RT1 and RT2.

[0050] 3. Because the amplification factors of the inductor L1 and the inductor L2 circuits are not consistent, the inductor L2 signal in the first-stage amplification circuit is twice that of the inductor L1, and the inductor L2 signal in the second-stage amplification circuit is also twice that of the inductor L1 signal, which causes a voltage difference between the voltage signals finally output by the inductor L1 and the inductor L2 voltages. Finally, the amplified voltage signals of the inductor L1 and the inductor L2 are respectively given to the U5 ADC chip for analysis.

[0051] Please refer to Figure 3 and Figure 4 :

[0052] ADC signal analysis circuit, ADCO832 chip analyzes the voltage signal after amplification by inductor L1 and inductor L2, and sends the analyzed information to the main control chip U7. Then the main control chip U7 lights up the LED indicator of the corresponding color according to the analyzed information to indicate the intensity of the lightning signal.

[0053] The beneficial effects of the lightning instrument of the utility model are:

[0054] The utility model, through the above technical scheme, includes a power supply circuit, an operational amplifier circuit, a lightning signal amplifier circuit, an ADC signal analysis circuit, a main control chip U7 and a plurality of lightning signal strength indicator lights, wherein the lightning signal amplifier circuit includes a first signal amplifier circuit and a second signal amplifier circuit, the first signal amplifier circuit includes a first-level signal amplifier circuit, and the second signal amplifier circuit includes a second-level signal amplifier circuit; the output end of the power supply circuit is connected to the input end of the operational amplifier circuit, the input ends of the first-level signal amplifier circuit and the second-level signal amplifier circuit are connected to the output end of the operational amplifier circuit, the output ends of the first-level signal amplifier circuit and the second-level signal amplifier circuit are connected to the input end of the ADC signal analysis circuit, the output end of the ADC signal analysis circuit is connected to the input end of the main control chip U7, and the output end of the main control chip U7 is connected to a plurality of lightning signal strength indicator lights, and the strength of the lightning signal can be measured by using the difference value through the different multiples of the first-level signal amplifier circuit and the second-level signal amplifier circuit, which can be used to warn or inform residents in the detection area.

[0055] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A lightning instrument, characterized in that: It includes a power supply circuit, an operational amplifier circuit, a lightning signal amplifier circuit, an ADC signal analysis circuit, a main control chip U7 and a number of lightning signal strength indicator lights, wherein the lightning signal amplifier circuit includes a first signal amplifier circuit and a second signal amplifier circuit, the first signal amplifier circuit includes a first-level signal amplifier circuit, and the second signal amplifier circuit includes a second-level signal amplifier circuit; The output end of the power supply circuit is connected to the input end of the operational amplifier circuit, the input ends of the first-level signal amplifier circuit and the second-level signal amplifier circuit are connected to the output end of the operational amplifier circuit, the output ends of the first-level signal amplifier circuit and the second-level signal amplifier circuit are connected to the input end of the ADC signal analysis circuit, the output end of the ADC signal analysis circuit is connected to the input end of the main control chip U7, and the output end of the main control chip U7 is connected to the several lightning signal strength indicator lights.

2. The lightning instrument according to claim 1, characterized in that: The first-stage signal amplification circuit includes an inductor L1 and a signal amplifier U2A. One end of the inductor L1 and pin 2 of the signal amplifier U2A are connected to the output end of the operational amplifier circuit, and the other end of the inductor L1 is connected to pin 3 of the signal amplifier U2A.

3. The lightning instrument according to claim 2, characterized in that: The second-stage signal amplifying circuit includes an inductor L2 and a signal amplifier U4A, one end of the inductor L2 and pin 2 of the signal amplifier U4A are connected to the output end of the operational amplifier circuit, and the other end of the inductor L2 is connected to pin 3 of the signal amplifier U4A.

4. The lightning instrument according to claim 3, characterized in that: The amplification factor of the signal amplifier U4A is twice that of the signal amplifier U2A.

5. The lightning instrument according to claim 4, characterized in that: The first signal amplifying circuit also includes a first and second signal amplifying circuit, which includes a signal amplifier U2B, wherein pin 6 of the signal amplifier U2B is connected to pin 1 of the signal amplifier U2A, and pin 5 of the signal amplifier U2B is connected to the output end of the operational amplifier circuit.

6. The lightning instrument according to claim 5, characterized in that: The first signal amplifying circuit further includes an adjustable resistor RT1 , one end of which is connected to pin 1 of the signal amplifier U2A, and the other end of which is connected to pin 6 of the signal amplifier U2B.

7. The lightning instrument according to claim 4, characterized in that: The second signal amplifying circuit also includes a second secondary signal amplifying circuit, which includes a signal amplifier U4B, wherein pin 6 of the signal amplifier U4B is connected to pin 1 of the signal amplifier U4A, and pin 5 of the signal amplifier U4B is connected to the output end of the operational amplifier circuit.

8. The lightning instrument according to claim 7, characterized in that: The second signal amplifying circuit further includes an adjustable resistor RT2, one end of the adjustable resistor RT2 is connected to the pin 1 of the signal amplifier U4A, and the other end of the adjustable resistor RT2 is connected to the pin 6 of the signal amplifier U4B.

9. The lightning instrument according to claim 4, characterized in that: The first-stage signal amplifying circuit further includes a diode CR2 disposed at both ends of the inductor L1 ; the second-stage signal amplifying circuit further includes a diode CR5 disposed at both ends of the inductor L2 .

10. The lightning instrument according to claim 4, characterized in that: The ADC signal analysis circuit includes a chip U5, the input end of the chip U5 is connected to the output end of the operational amplifier circuit, and the output end of the chip U5 is connected to the input end of the main control chip U7.

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