Electromagnetic radiation test positioning instrument

Abstract

The embodiment of the utility model discloses an electromagnetic radiation test positioning instrument. The electromagnetic radiation test locator comprises a probe TMIC, an input interface, a coupling capacitor C1, a coupling capacitor C5, a resistor R1, a power supply DC, a filter BL1, a volume adjusting potentiometer RW1, an amplification chip IC1, an output load horn RL, a power supply chip IC2 and a power supply switch K1. According to the implementation mode, the squeal problem is solved in circuit design, zero noise in a static state can be achieved, the circuit design is reasonable, the power time is long, charging is achieved, in addition, the volume can be conveniently adjusted, power is lasting, and universality is high.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of electromagnetic radiation testing, and in particular, to an electromagnetic radiation testing and positioning device. Background Art

[0002] With the continuous development of modern technology, the harm of electromagnetic radiation to the human body is increasing. It exists everywhere in the wild, squares, indoors and outdoors. People have begun to pay attention to the harmfulness of electromagnetic radiation. The electromagnetic radiation testing and positioning device is actually a detection device through sensors. The detected radiation source signal is analyzed by a circuit and can be displayed as a waveform on a screen or output as an audio signal and presented as sound.

[0003] Currently, most products display waveform diagrams on a display screen and do not present electromagnetic radiation as audio. They are inconvenient to operate, have a low penetration rate, and cannot well reflect the true meaning of electromagnetic radiation. Summary of the Invention

[0004] The content part of the present disclosure is used to briefly introduce concepts, which will be described in detail in the following detailed implementation part. The content part of the present disclosure is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] Some embodiments of the present disclosure propose an electromagnetic radiation testing and positioning device to solve the technical problems mentioned in the above background art part.

[0006] In a first aspect, some embodiments of the present disclosure provide an electromagnetic radiation test and positioning device, characterized in that the electromagnetic radiation test and positioning device includes: a probe TMIC for receiving external electromagnetic radiation signals, an input interface, a coupling capacitor C1, a coupling capacitor C5, a resistor R1, a power supply DC, a filter BL1, a volume adjustment potentiometer RW1, an amplification chip IC1, an output load speaker RL, a power supply chip IC2, and a power switch K1; the probe TMIC is connected to the input interface, one end of the input interface is connected to one end of the coupling capacitor C1, one end of the input interface is connected to the positive pole of the power supply DC through the resistor R1, the other end of the input interface is connected to the negative pole of the power supply DC, the other end of the coupling capacitor C1 is connected to one end of the filter BL1, the other end of the filter BL1 is connected to the negative pole of the power supply DC, the third end of the filter BL1 is connected to one end of the volume adjustment potentiometer RW1, the other end of the volume adjustment potentiometer RW1 is connected to the negative pole of the power supply DC for volume adjustment, the midpoint adjustment terminal of the volume adjustment potentiometer RW1 is connected to pin 2 of the amplification chip IC1, the positive pin of the amplification chip IC1 is connected to the positive pole of the power supply DC, pin 5 of the amplification chip IC1 is connected to one end of the coupling capacitor C5, the other end of the coupling capacitor C5 is connected to one end of the output load speaker RL, the other end of the output load speaker RL is connected to the negative pole of the power supply DC, the positive pin of the amplification chip IC1 is connected to one end of the input interface through the resistor R1, the negative pole of the amplification chip IC1 is connected to the negative pole of the power supply DC, the positive pole of the power supply chip IC2 is connected to the positive pole of the power supply DC through the power switch K1, the negative pole of the power supply chip IC2 is connected to the negative pole of the power supply DC, and the output pin of the power supply chip IC2 is connected to one end of the input interface through the resistor R1.

[0007] One embodiment among the above various embodiments of the present disclosure has the following beneficial effects: The howling problem is solved in the circuit design, zero noise can be achieved at static state, the circuit design is reasonable, the power time is long, it is rechargeable, and in addition, the volume can be conveniently adjusted, the power is durable, and the versatility is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In combination with the accompanying drawings and with reference to the following specific embodiments, the above and other features, advantages and aspects of the various embodiments of the present disclosure will become more apparent. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the elements and elements are not necessarily drawn to scale.

[0009] Figure 1 It is a circuit schematic diagram in some embodiments of an electromagnetic radiation test and positioning device of the present utility model;

[0010] Figure 2 It is a schematic structural diagram of some embodiments of an electromagnetic radiation test locator according to the present utility model.

[0011] Description of the reference numerals:

[0012] Probe TMIC, input interface, coupling capacitor C1, coupling capacitor C5, resistor R1, power supply DC, filter BL1, volume adjustment potentiometer RW1, amplifier chip IC1, output load speaker RL, power supply chip IC2, power switch K1. Specific embodiments

[0013] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0014] In addition, it should be noted that for the sake of convenience of description, only the parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0015] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of the functions executed by these devices, modules or units or their interdependent relationships.

[0016] It should be noted that the modifications of "one" and "plural" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0017] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0018] The present disclosure will be described in detail below with reference to the drawings and in combination with the embodiments.

[0019] First, please refer to Figure 1 , Figure 1 which is a circuit schematic diagram of an electromagnetic radiation test locator according to the present utility model, as Figure 1As shown, the electromagnetic radiation test locator specifically includes: a probe TMIC for receiving external electromagnetic radiation signals, an input interface, a coupling capacitor C1, a coupling capacitor C5, a resistor R1, a power supply DC, a filter BL1, a volume adjustment potentiometer RW1, an amplifier chip IC1, an output load speaker RL, a power supply chip IC2, and a power switch K1. Among them, the probe TMIC is a gold-plated high-fidelity large diaphragm electric probe.

[0020] The above-mentioned probe TMIC is connected to the above-mentioned input interface. One end of the above-mentioned input interface is connected to one end of the above-mentioned coupling capacitor C1. One end of the above-mentioned input interface is connected to the positive pole of the above-mentioned power supply DC through the above-mentioned resistor R1. The other end of the above-mentioned input interface is connected to the negative pole of the above-mentioned power supply DC. The other end of the above-mentioned coupling capacitor C1 is connected to one end of the above-mentioned filter BL1. The other end of the above-mentioned filter BL1 is connected to the negative pole of the above-mentioned power supply DC. The third end of the above-mentioned filter BL1 is connected to one end of the above-mentioned volume adjustment potentiometer RW1. The other end of the above-mentioned volume adjustment potentiometer RW1 is connected to the negative pole of the above-mentioned power supply DC volume adjustment potentiometer. The midpoint adjustment terminal of the above-mentioned volume adjustment potentiometer RW1 is connected to pin 2 of the above-mentioned amplifier chip IC1. The positive pin of the above-mentioned amplifier chip IC1 is connected to the positive pole of the above-mentioned power supply DC. The 5th pin of the above-mentioned amplifier chip IC1 is connected to one end of the above-mentioned coupling capacitor C5. The other end of the above-mentioned coupling capacitor C5 is connected to one end of the above-mentioned output load speaker RL. The other end of the above-mentioned output load speaker RL is connected to the negative pole of the above-mentioned power supply DC. The positive pin of the above-mentioned amplifier chip IC1 is connected to one end of the above-mentioned input interface through the above-mentioned resistor R1. The negative pole of the above-mentioned amplifier chip IC1 is connected to the negative pole of the above-mentioned power supply DC. The positive pole of the above-mentioned power supply chip IC2 is connected to the positive pole of the above-mentioned power supply DC through the above-mentioned power switch K1. The negative pole of the above-mentioned power supply chip IC2 is connected to the negative pole of the above-mentioned power supply DC. The output pin of the above-mentioned power supply chip IC2 is connected to one end of the above-mentioned input interface through a resistor R1.

[0021] In some optional implementation manners of some embodiments, the above-mentioned electromagnetic radiation test locator further includes: a power supply filter capacitor C6. One end of the above-mentioned power supply filter capacitor C6 is connected to the above-mentioned resistor R1, and the other end of the above-mentioned power supply filter capacitor C6 is grounded, that is, the negative pole of the above-mentioned power supply DC.

[0022] In some optional implementation manners of some embodiments, the above-mentioned electromagnetic radiation test locator further includes a first gain control module. The above-mentioned first gain control module includes: a gain control capacitor C2; one end of the above-mentioned gain control capacitor C2 is connected to pin 3 of the above-mentioned amplifier chip IC1, and the other end of the above-mentioned gain control capacitor C2 is connected to pin 4 of the above-mentioned amplifier chip IC1.

[0023] In some alternative implementation manners of some embodiments, the above electromagnetic radiation test locator further includes: an AC bypass capacitor C3; one end of the AC bypass capacitor C3 is connected to the above amplification chip IC1, and the other end of the AC bypass capacitor C3 is connected to the negative electrode of the above power supply DC.

[0024] In some alternative implementation manners of some embodiments, the above electromagnetic radiation test locator further includes: an automatic gain control circuit BL2; one end of the automatic gain control circuit BL2 is connected to pin 2 of the above amplification chip IC1, and the other end of the automatic gain control circuit BL2 is connected to the output pin of the above amplification chip IC1.

[0025] In some alternative implementation manners of some embodiments, the above electromagnetic radiation test locator further includes: a high-frequency circuit, and the high-frequency circuit includes: a resistor R2, a coupling capacitor C4; one end of the resistor R2 is connected to the output pin of the above amplification chip IC1, the other end of the resistor R2 is connected to one end of the coupling capacitor C4, and the other end of the coupling capacitor C4 is connected to the negative electrode of the above power supply DC.

[0026] In some alternative implementation manners of some embodiments, the above electromagnetic radiation test locator further includes: a power charging chip IC3; the negative electrode of the power charging chip IC3 is connected to the negative electrode of the above power supply DC, the positive electrode of the power charging chip IC3 is connected to the charging port of the above power supply DC, the output pin of the power charging chip IC3 is connected to the positive electrode of the above power supply DC, and the input pin of the power charging chip IC3 is connected to the above power switch K1.

[0027] In some alternative implementation manners of some embodiments, the above electromagnetic radiation test locator further includes: an LED light-emitting tube for displaying the power supply; one end of the LED light-emitting tube is connected to the above power supply chip IC2, and the other end of the LED light-emitting tube is grounded, that is, the negative electrode of the power supply DC.

[0028] In some alternative implementation manners of some embodiments, the above output load speaker RL is 4 ohms.

[0029] In some alternative implementation manners of some embodiments, the above probe TMIC is a high-fidelity signal receiving probe.

[0030] Specifically, one end of the above input interface is connected to one end of coupling capacitor C1. One end of the above input interface is also connected to the positive pole of the power supply through resistor R1. The other end of the above input interface is connected to the negative pole of power supply DC. The other end of the above C1 is connected to one end of filter BL1. The other end of the above BL1 is connected to the negative pole of the above DC. The third end of the above BL1 is connected to one end of RW. The positive pin of the above IC1 is also connected to resistor R1 and one end of the above input interface. The negative pole of the above IC1 is connected to the negative pole of the above DC. The 5th pin of the above IC1 is connected to one end of coupling capacitor C5. The other end of the above C5 is connected to one end of RL. The other end of the above RL is connected to the negative pole of the above DC. The positive pole of power supply chip IC3 is connected to the positive pole of the above DC through switch K1. The negative pole of the above IC3 is connected to the negative pole of the above DC. The output pin of the above IC3 is connected to the positive end of IC2 of the above input interface through K1. Among them, the output of the output terminal includes: RL speaker 4 ohms. In the embodiment of the present utility model, the voltage working range of the electromagnetic radiation test locator is: 5V - 14V.

[0031] In the embodiment of the present utility model, the above electromagnetic radiation test locator further includes: power supply filter capacitor C6. One end of the above C6 is connected to the above R1, and the other end of the above C6 is grounded, that is, the negative pole of the above DC.

[0032] In the embodiment of the present utility model, a first gain control module is internally connected to the above IC1. The first gain control module includes: gain control capacitor C2. One end of the above C2 is connected to the 3rd pin of the above IC1, and the other end of the above C2 is connected to one end of the 4th pin of IC1. One end of AC bypass capacitor C3 is respectively connected to the above IC1, and the other end of the above C3 is connected to the negative pole of the above DC. In addition, the above electromagnetic radiation test locator is further provided with: an automatic gain control circuit BL2. One end of the above BL2 is connected to the 2nd pin of the above IC1, and the other end of the above BL2 is connected to the output pin of the above IC1.

[0033] A first high-frequency circuit. Specifically, the first high-frequency circuit includes: a resistor R2 connected to the output pin of the above IC1. The other end of the above R2 is connected to one end of capacitor C4. The other end of the above C4 is connected to the negative pole of the above DC;

[0034] Power supply drive and voltage stabilization conversion chip IC2. The negative pole of the above IC2 is connected to the negative pole of the above IC3. The positive pole of the above IC2 is connected to the positive pole of power supply DC through trigger key switch K2.

[0035] A charging port for charging external devices is led out between the output pin of the above IC3 and the negative pole of the above power supply DC. The positive end of IC3 is the positive pole of the charging port. The output end of IC3 is connected to the positive pole of the DC power supply to charge the power supply.

[0036] The LED light-emitting diode for displaying the battery level, one end of the above LED light-emitting diode is connected to the above IC2, and the other end is grounded, that is, the negative pole of the DC.

[0037] The following is an explanation of the functional parameters of the electromagnetic radiation test locator:

[0038] The structure of the electromagnetic radiation test locator in the embodiment of the present utility model is as Figure 2 shown. The power amplifier of this electromagnetic radiation test locator uses an advanced YD-EM digital chip, which has features such as overcurrent protection, thermal protection, and noise reduction. It has a wide voltage operating range, from DC 5V to 14V, and can work normally when the current is 1A or above.

[0039] Product parameters:

[0040] Operating mode: Class D (automatic pulse width modulation type)

[0041] Chip model: YD-EM digital chip

[0042] Recommended voltage: 5V - 1000MA

[0043] Frequency response range: 1Hz - 40KHz - 20GH

[0044] Channel type: Stereo

[0045] Signal-to-noise ratio: 92%

[0046] Output load: 4 ohms

[0047] Product size: 90*75*24MM (excluding the protruding part of the potentiometer)

[0048] The core circuit of the electromagnetic radiation test locator uses a two-stage preamplifier to resist power supply noise and environmental noise. The probe uses a gold-plated high-fidelity large diaphragm probe, and the sound restoration is clear. The automatic gain (AGC) circuit effectively controls the strength of the signal and avoids the impact of instantaneous high-decibel sounds on the subsequent equipment.

[0049] Operating voltage: 5V - 14VDC

[0050] Operating current: maximum 8MA

[0051] Sensitivity: -25DB,

[0052] Detection range: adjustable for about 100 square meters or more.

[0053] The following is a detailed explanation of the working principle of the electromagnetic radiation test locator:

[0054] TMIC is the probe (sensor), R1 is the bias resistor, which provides a bias voltage for TMIC,

[0055] C1 and C5 are coupling capacitors, and BL1 is a filter (attenuating strong signals and amplifying and filtering weak signals).

[0056] The function of BL2 is an automatic gain control circuit to prevent circuit self-oscillation and whistling.

[0057] C2 is for gain control to make the sound quality purer.

[0058] R2 and C4 are for high-frequency circuits.

[0059] C3 is an AC bypass capacitor.

[0060] C6 is a filter capacitor.

[0061] IC1 is an amplification chip, and the output sound quality is clear and pure.

[0062] RW1 is a volume adjustment potentiometer, which can adjust the volume.

[0063] IC2 is a power supply chip.

[0064] LED is a light-emitting diode.

[0065] IC3 is a charging chip, which can charge at any time when the voltage drops.

[0066] K1 is a power switch.

[0067] Working principle: The external signal is received and input through the TMIC probe, and the radiation source signal is converted into an audio electrical signal. It is coupled through C1 and filtered through BL1 (attenuating strong signals and amplifying and filtering weak signals) and sent to the potentiometer RW1 (which can adjust the volume) and into the second pin of IC1. After being amplified inside IC1, it is output from the fifth pin to the capacitor C5, connected by C5 to the RL speaker for output, and the speaker converts the audio into sound. IC2 is a power supply chip, which can be adjusted arbitrarily between 3V and 36V, and the power supply voltage is stably output. IC3 is a power supply charging chip, which charges the DC power supply and has the function of automatically cutting off the power when fully charged. This function is built into the chip. The electromagnetic radiation test and locator in the embodiment of the present utility model has a loud sound, displays various frequency sounds, and the volume is adjustable. It can be detected within a range of 10 - 200 meters. The electromagnetic radiation test and locator can also be used for school teaching and circuit experiments, and has a wide range of applications.

[0068] One of the above embodiments of the present disclosure has the following beneficial effects: The problem of whistling is solved in the circuit design, and zero noise can be achieved at static state. The circuit design is reasonable, the power time is long, it is rechargeable. In addition, the volume can be conveniently adjusted, the power is durable, and the versatility is strong.

[0069] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, technical solutions formed by mutually replacing the above features with technical features (but not limited to) having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. An electromagnetic radiation test and positioning instrument, characterized in that, The electromagnetic radiation test and positioning instrument includes: a probe TMIC for receiving external electromagnetic radiation signals, an input interface, a coupling capacitor C1, a coupling capacitor C5, a resistor R1, a power supply DC, a filter BL1, a volume adjustment potentiometer RW1, an amplification chip IC1, an output load speaker RL, a power supply chip IC2, and a power switch K1; The probe TMIC is connected to the input interface. One end of the input interface is connected to one end of the coupling capacitor C1. One end of the input interface is connected to the positive pole of the power supply DC through the resistor R1, and the other end of the input interface is connected to the negative pole of the power supply DC. The other end of the coupling capacitor C1 is connected to one end of the filter BL1. The other end of the filter BL1 is connected to the negative pole of the power supply DC. The third end of the filter BL1 is connected to one end of the volume adjustment potentiometer RW1. The other end of the volume adjustment potentiometer RW1 is connected to the negative pole of the power supply DC for volume adjustment. The midpoint adjustment terminal of the volume adjustment potentiometer RW1 is connected to pin 2 of the amplification chip IC1. The positive pin of the amplification chip IC1 is connected to the positive pole of the power supply DC. Pin 5 of the amplification chip IC1 is connected to one end of the coupling capacitor C5. The other end of the coupling capacitor C5 is connected to one end of the output load speaker RL. The other end of the output load speaker RL is connected to the negative pole of the power supply DC. The positive pin of the amplification chip IC1 is connected to one end of the input interface through the resistor R1. The negative pole of the amplification chip IC1 is connected to the negative pole of the power supply DC. The positive pole of the power supply chip IC2 is connected to the positive pole of the power supply DC through the power switch K1. The negative pole of the power supply chip IC2 is connected to the negative pole of the power supply DC. The output pin of the power supply chip IC2 is connected to one end of the input interface through the resistor R1.

2. The electromagnetic radiation test and positioning instrument according to claim 1, characterized in that, The electromagnetic radiation test and positioning instrument further includes: a power supply filter capacitor C6. One end of the power supply filter capacitor C6 is connected to the resistor R1, and the other end of the power supply filter capacitor C6 is grounded, that is, the negative pole of the power supply DC.

3. The electromagnetic radiation test and positioning instrument according to claim 1, characterized in that The electromagnetic radiation test and positioning instrument further includes a first gain control module. The first gain control module includes: a gain control capacitor C2; One end of the gain control capacitor C2 is connected to pin 3 of the amplification chip IC1, and the other end of the gain control capacitor C2 is connected to pin 4 of the amplification chip IC1.

4. The electromagnetic radiation test and positioning instrument according to claim 1, wherein The electromagnetic radiation test and positioning instrument further includes: an AC bypass capacitor C3; One end of the AC bypass capacitor C3 is connected to the amplification chip IC1, and the other end of the AC bypass capacitor C3 is connected to the negative pole of the power supply DC.

5. The electromagnetic radiation test and positioning instrument according to claim 1, characterized in that, The electromagnetic radiation test and positioning instrument further includes: an automatic gain control circuit BL2; One end of the automatic gain control circuit BL2 is connected to pin 2 of the amplification chip IC1, and the other end of the automatic gain control circuit BL2 is connected to the output pin of the amplification chip IC1.

6. The electromagnetic radiation test and positioning instrument according to claim 1, wherein The electromagnetic radiation test and locator further includes: a high-frequency circuit, and the high-frequency circuit includes: a resistor R2 and a coupling capacitor C4; One end of the resistor R2 is connected to the output pin of the amplifier chip IC1, the other end of the resistor R2 is connected to one end of the coupling capacitor C4, and the other end of the coupling capacitor C4 is connected to the negative pole of the power supply DC.

7. The electromagnetic radiation test locator according to claim 1, characterized in that, The electromagnetic radiation test and locator further includes: a power charging chip IC3; The negative pole of the power charging chip IC3 is connected to the negative pole of the power supply DC, the positive pole of the power charging chip IC3 is connected to the charging port of the power supply DC, the output pin of the power charging chip IC3 is connected to the positive pole of the power supply DC, and the input pin of the power charging chip IC3 is connected to the power switch K1.

8. The electromagnetic radiation test and positioning instrument according to claim 7, characterized in that, The electromagnetic radiation test and locator further includes: an LED light-emitting diode for displaying the power supply; One end of the LED light-emitting diode is connected to the power chip IC2, and the other end of the LED light-emitting diode is grounded, that is, the negative pole of the power supply DC.

9. The electromagnetic radiation test and positioning instrument according to claim 1, characterized in that The output load speaker RL is 4 ohms.

10. The electromagnetic radiation test and positioning instrument according to claim 1, characterized in that, The probe TMIC is a high-fidelity signal receiving probe.

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