CN214507445U

CN214507445U - Flashlight anti-jamming circuit based on intelligent helmet

Info

Publication number: CN214507445U
Application number: CN202120788605.7U
Authority: CN
Inventors: 邓杰辉; 邓武强; 冯隽桃
Original assignee: Foshan Victor Electronic Equipment Co ltd
Current assignee: Foshan Victor Electronic Equipment Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-10-26
Anticipated expiration: 2031-04-16

Abstract

The utility model discloses a flashlight anti-jamming circuit based on intelligent helmet, including power V1, boost circuit U1 and flashlight light source E that connect gradually, the voltage that power V1 output supplies after boosting through boost circuit U1 flashlight light source E; a power supply loop between the booster circuit U1 and the flashlight light source E is provided with a filter magnetic bead L1, a filter magnetic bead L2 and a magnetic ring C, a positive lead A and a negative lead B of the power supply loop are respectively wound around the magnetic ring C, and the filter magnetic bead L1 and the filter magnetic bead L2 are respectively arranged on the positive lead A and the negative lead B. The utility model discloses utilize magnetic ring C to strain high frequency interference, utilize filtering magnetic bead L1, filtering magnetic bead L2 to strain high frequency signal, in practical flashlight is used, can eliminate interference source 157MHz, when improving the flashlight interference killing feature, can effectively reduce the electromagnetic radiation of flashlight, reduce the radiation of intelligent helmet to the human body, improve the security of intelligent helmet.

Description

Flashlight anti-jamming circuit based on intelligent helmet

Technical Field

The utility model relates to an intelligence helmet technical field especially relates to a flashlight anti jamming circuit based on intelligence helmet.

Background

In the current society, the intelligent level is rapidly developed, the intelligent wearing technology is gradually applied to our lives, and the intelligent helmet is applied to a plurality of operation scenes, is used as an intelligent tool for assisting operation, and provides convenient assistance for field operation personnel. At present the intelligent helmet of using in the operation, in order to be applicable to dim operation environment, generally there is the flashlight function by the subsidiary, provides the light source for the field operation through the flashlight, satisfies the operation needs under the dim environment. In current intelligent helmet, most flashlight does not have anti-interference processing, can have some electromagnetic radiation, and personnel can cause certain influence to personnel's health under the condition of wearing for a long time, are unfavorable for intelligent helmet's popularization and application.

The magnetic ring is also called a ferrite magnetic ring and has the characteristics of an anti-interference magnetic core; it is a common anti-interference element in electronic circuits, has good inhibition effect on high-frequency noise, and is generally made of ferrite materials (Mn-Zn). In the low frequency band, the ferrite anti-interference core presents very low inductive impedance value, and does not affect the transmission of useful signals on the data line or the signal line. In the high frequency band, starting from about 10MHz, the impedance increases, the inductive reactance component remains small, but the resistive component increases rapidly, and when high frequency energy passes through the magnetic material, the resistive component converts the energy into heat energy to dissipate. Thus, a low-pass filter is formed, high-frequency noise signals are greatly attenuated, impedance to low-frequency useful signals can be ignored, and normal operation of the circuit is not affected. The ferrite magnetic ring has a series of advantages of low cost, simple, convenient and effective use, small occupied space and the like, and is widely applied to various military or civil electronic devices such as computers and the like.

Disclosure of Invention

An object of the utility model is to provide a can reduce electromagnetic radiation, effectively improve the flashlight anti jamming circuit of intelligent helmet security.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

A flashlight anti-jamming circuit based on an intelligent helmet comprises a power supply V1, a boost circuit U1 and a flashlight light source E which are sequentially connected, wherein the voltage output by the power supply V1 is boosted by the boost circuit U1 and then supplied to the flashlight light source E; the flashlight with the magnetic ring is characterized in that a power supply loop between the booster circuit U1 and the flashlight light source E is provided with a filtering magnetic bead L1, a filtering magnetic bead L2 and a magnetic ring C, a positive lead A and a negative lead B of the power supply loop are respectively wound with the magnetic ring C, and the filtering magnetic bead L1 and the filtering magnetic bead L2 are respectively arranged on the positive lead A and the negative lead B.

More preferably, the power supply V1 is a dc power supply, and the booster circuit U1 is a dc booster chip.

More preferably, the flashlight light source E is an LED light source or a tungsten lamp.

More preferably, the boosting circuit U1 is a TPS61169DCKR chip; a VIN pin of the TPS61169DCKR chip is connected with the power supply V1, a SW pin of the TPS61169DCKR chip is connected with the filtering magnetic bead L1 through a Schottky diode D2, and an FB pin of the TPS61169DCKR chip is connected with the filtering magnetic bead L2; a power inductor L3 is connected between the VIN pin and the SW pin of the TPS61169DCKR chip to boost the voltage.

More preferably, the connection node of the schottky diode D2 and the filter bead L1 is grounded through a filter capacitor C2.

More preferably, a filter capacitor C3 is connected in parallel to both ends of the schottky diode D2.

More preferably, the output terminal of the power supply V1 is grounded through a filter capacitor.

More preferably, the output terminal of the power supply V1 is grounded through a filter capacitor C4 and a filter capacitor C5 connected in parallel.

The utility model has the advantages that: through set up filtering magnetic bead L1, filtering magnetic bead L2 and magnetic ring C on the power supply circuit between boost circuit U1 and flashlight light source E, utilize magnetic ring C to filter out high frequency interference, utilize filtering magnetic bead L1, filtering magnetic bead L2 to filter out high frequency signal, in practical flashlight application, can eliminate interference source 157MHz, when improving the flashlight interference killing feature, can effectively reduce the electromagnetic radiation of flashlight, reduce the radiation of intelligent helmet to the human body, improve the security of intelligent helmet. Simultaneously, this scheme implementation is simple and convenient, repeatedly usable installs, and does not influence the whole image of equipment.

Drawings

Fig. 1 shows that the utility model provides a flashlight anti jamming circuit's based on intelligent helmet circuit diagram.

Detailed Description

The following description will be further made in conjunction with the accompanying drawings of the specification, so that the technical solution and the advantages of the present invention are clearer and clearer. The embodiments described below are exemplary and are intended to be illustrative of the present invention, but should not be construed as limiting the invention.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

As shown in fig. 1, an anti-jamming circuit for a flashlight based on an intelligent helmet comprises a power supply V1, a voltage boost circuit U1 and a flashlight light source E, which are connected in sequence, wherein the voltage output by the power supply V1 is boosted by the voltage boost circuit U1 and then supplied to the flashlight light source E; the flashlight with the magnetic ring is characterized in that a power supply loop between the booster circuit U1 and the flashlight light source E is provided with a filtering magnetic bead L1, a filtering magnetic bead L2 and a magnetic ring C, a positive lead A and a negative lead B of the power supply loop are respectively wound with the magnetic ring C, and the filtering magnetic bead L1 and the filtering magnetic bead L2 are respectively arranged on the positive lead A and the negative lead B.

Compared with the prior art, the flashlight anti-jamming circuit of the intelligent helmet provided by the embodiment is characterized in that the power supply loop between the booster circuit U1 and the flashlight light source E is provided with the filtering magnetic bead L1, the filtering magnetic bead L2 and the magnetic ring C, the magnetic ring C is used for filtering out high-frequency interference, the filtering magnetic bead L1 and the filtering magnetic bead L2 are used for filtering out high-frequency signals, in practical flashlight application, an interference source 157MHz can be eliminated, the anti-jamming capability of the flashlight is improved, meanwhile, the electromagnetic radiation of the flashlight can be effectively reduced, the radiation of the intelligent helmet to a human body is reduced, and the safety of the intelligent helmet is improved.

In this embodiment, the power source V1 is preferably a 4V dc power source, and the flashlight light source E is preferably an LED light source. The 4V direct current power supply is boosted into 9V direct current by the booster circuit U1 and then supplied to the flashlight light source E, and therefore the flashlight light source E is lightened. In other embodiments, the voltage of the power source V1 and the boosted voltage may be adjusted as needed; the flashlight light source E can be replaced by other electric light sources such as a tungsten lamp, and is not limited to this embodiment.

In this embodiment, the number of winding turns of the positive wire a, the negative wire B, and the magnetic ring C is preferably 6. In other embodiments, the specific number of windings may be adjusted appropriately according to the interference-free absorption energy, and is not limited to the embodiment.

In this embodiment, the boost circuit U1 is preferably a TPS61169DCKR chip; a VIN pin of the TPS61169DCKR chip is connected with the power supply V1, a SW pin of the TPS61169DCKR chip is connected with the filtering magnetic bead L1 through a Schottky diode D2, and an FB pin of the TPS61169DCKR chip is connected with the filtering magnetic bead L2; a power inductor L3 is connected between the VIN pin and the SW pin of the TPS61169DCKR chip to boost the voltage.

Furthermore, the connection node of the schottky diode D2 and the filter bead L1 is also grounded through a filter capacitor C2, and a filter capacitor C3 is also connected in parallel to two ends of the schottky diode D2. The filter capacitor C2 and the filter capacitor C3 are arranged, so that high-frequency signals on a power supply loop can be further filtered, and the power supply level can be smoother.

Furthermore, the output end of the power supply V1 is also grounded through a filter capacitor C4 and a filter capacitor C5 which are connected in parallel. Here, the filter capacitor C4 and the filter capacitor C5 are advantageous in that not only the high frequency signal of the booster circuit can be filtered, but also the level of the output of the power supply V1 can be smoothed. Of course, according to different actual needs, one of the filter capacitor C4 and the filter capacitor C5 may be omitted, and only one of the two capacitors is required to be reserved, which is not limited to the embodiment.

It will be understood by those skilled in the art from the foregoing description of the structure and principles that the present invention is not limited to the specific embodiments described above, and that modifications and substitutions based on the known art are intended to fall within the scope of the invention, which is defined by the claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.

Claims

1. A flashlight anti-jamming circuit based on an intelligent helmet comprises a power supply V1, a boost circuit U1 and a flashlight light source E which are sequentially connected, wherein the voltage output by the power supply V1 is boosted by the boost circuit U1 and then supplied to the flashlight light source E; the flashlight with the magnetic ring is characterized in that a power supply loop between the booster circuit U1 and the flashlight light source E is provided with a filtering magnetic bead L1, a filtering magnetic bead L2 and a magnetic ring C, a positive lead A and a negative lead B of the power supply loop are respectively wound with the magnetic ring C, and the filtering magnetic bead L1 and the filtering magnetic bead L2 are respectively arranged on the positive lead A and the negative lead B.

2. The anti-jamming circuit for flashlight based on intelligent helmet as claimed in claim 1, wherein the power supply V1 is dc power supply, and the voltage boost circuit U1 is dc boost chip.

3. The anti-jamming circuit for the flashlight based on the intelligent helmet according to claim 1, wherein the flashlight light source E is an LED light source or a tungsten lamp.

4. The anti-jamming circuit for flashlight based on intelligent helmet as claimed in claim 1, wherein the voltage boosting circuit U1 is TPS61169DCKR chip; a VIN pin of the TPS61169DCKR chip is connected with the power supply V1, a SW pin of the TPS61169DCKR chip is connected with the filtering magnetic bead L1 through a Schottky diode D2, and an FB pin of the TPS61169DCKR chip is connected with the filtering magnetic bead L2; a power inductor L3 is connected between the VIN pin and the SW pin of the TPS61169DCKR chip to boost the voltage.

5. The intelligent helmet-based flashlight immunity circuit of claim 4, wherein a connection node of schottky diode D2 and filter bead L1 is grounded through a filter capacitor C2.

6. The anti-jamming circuit for flashlight based on the intelligent helmet as claimed in claim 4, wherein a filter capacitor C3 is connected in parallel to two ends of the Schottky diode D2.

7. The anti-jamming circuit for flashlight based on an intelligent helmet according to claim 1, wherein an output terminal of the power supply V1 is grounded through a filter capacitor.

8. The anti-jamming circuit for flashlight based on intelligent helmet as claimed in claim 7, wherein the output terminal of the power supply V1 is grounded through the filter capacitor C4 and the filter capacitor C5 connected in parallel.