CN216082905U - Multifunctional test pencil - Google Patents
Multifunctional test pencil Download PDFInfo
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- CN216082905U CN216082905U CN202121206507.4U CN202121206507U CN216082905U CN 216082905 U CN216082905 U CN 216082905U CN 202121206507 U CN202121206507 U CN 202121206507U CN 216082905 U CN216082905 U CN 216082905U
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Abstract
The utility model relates to a multifunctional test pencil, and belongs to the technical field of electricity measurement. The test device comprises a pen shell, a test head CT arranged at the front end of the pen shell and a test touch piece S arranged at the rear end of the pen shell; further comprising: the wireless charging system comprises a resistor R01, a resistor R02, a light emitting diode LED11, a light emitting diode LED12, a light emitting diode LED21, a light emitting diode LED22, a triode T11, a triode T22, a triode T21, a voice module YM, a rechargeable battery B and a wireless charging module WXC; the test pencil has the advantages of novel structure, convenient use, high reliability and easy popularization and application.
Description
Technical Field
The utility model belongs to the technical field of electricity measurement, and particularly relates to a multifunctional test pencil which can be applied to power plants and power systems for power generation, power supply, electricity utilization and the like.
Background
The test pencil is also called test pencil, which is called test pencil for short. The testing tool is an electrician tool and is used for testing whether the electric wire is electrified or not. The pen body is provided with a neon bulb, and if the neon bulb shines during testing, the neon bulb indicates that the lead is electrified or is a fire wire of a passage. The pen point and the pen tail of the test pencil are made of metal materials, and the pen holder is made of insulating materials. When the test pencil is used, a user must touch the metal part at the tail end of the test pencil by hand, otherwise, because a charged body, the test pencil, a human body and the ground do not form a loop, neon bulbs in the test pencil cannot emit light to cause misjudgment, and the charged body is considered to be uncharged.
The non-contact test pencil and the contact test pencil sold in the market at present are two different door-type test pencils. The non-contact test pencil is directly isolated from electricity, so that a human body cannot get an electric shock, the non-contact test pencil is relatively safe, but only can measure approximate alternating voltage, the contact test pencil adopts contact test voltage, the current is reduced through a large resistor, the human body is used as a grounding conductor to realize voltage measurement, and the danger of direct electric shock of the human body can be caused. Meanwhile, some current test pens can report by voice or give an alarm by signals and the like, but the test pens must rely on batteries and must be provided with a power switch, and when the switches are forgotten to be turned off, the batteries are exhausted, so that the test pens are difficult to finish. Therefore, how to overcome the defects of the prior art is a problem to be solved urgently in the technical field of electricity measurement at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides a multifunctional test pencil.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a multifunctional test pencil comprises a pencil shell, a test head CT arranged at the front end of the pencil shell, and a test contact piece S arranged at the rear end of the pencil shell; further comprising: the wireless charging system comprises a resistor R01, a resistor R02, a light emitting diode LED11, a light emitting diode LED12, a light emitting diode LED21, a light emitting diode LED22, a triode T11, a triode T22, a triode T21, a voice module YM, a rechargeable battery B and a wireless charging module WXC;
the test head CT is connected with one end of a resistor R01; the other end of the resistor R01 is respectively connected with the cathode of the light-emitting diode LED12 and the anode of the light-emitting diode LED 22;
the anode of the light emitting diode LED12 is connected with the B pole of the triode T11; the E pole of the triode T11 is connected with the negative pole of the light-emitting diode LED 11;
the anode of the light emitting diode LED11 is connected with the E electrode of the triode T22 and the anode of the rechargeable battery B;
the wireless charging module WXC is connected with a rechargeable battery B in parallel;
the C pole of the triode T11 is connected with the negative pole of the LED 21;
the cathode of the light emitting diode LED22 is connected with the B pole of the triode T21; the E pole of the triode T21 is connected with the anode of the light-emitting diode LED 21; the cathode of the light-emitting diode LED21 is also connected with one end of the voice module YM, one end of the resistor R02 and the cathode of the rechargeable battery B respectively;
the other end of the resistor R02 is connected with the test contact piece S;
the C pole of the triode T21 is connected with the B pole of the triode T22; the C pole of the transistor T22 is connected to the other end of the voice module YM.
Further, it is preferable that the transistor T11 and the transistor T22 are both PNP type.
Further, the transistor T21 is preferably of NPN type.
Further, it is preferable that the transistor T11, the transistor T22, and the transistor T21 are S8550, S8050, and S8550, respectively, and the amplification factors thereof are β 11, β 21, and β 22, respectively, and β 11, β 21, and β 22 are not less than 150 times.
Further, it is preferable that the secondary battery B is a lithium battery.
Compared with the prior art, the utility model has the beneficial effects that:
the test pencil has novel structure and convenient use, and when the test pencil is not used for measurement, the circuit is cut off, namely, no current is consumed, and a power switch is not needed. The test pencil can also be used as a common test pencil, when alternating current is measured, the light-emitting diode LED11 is on, the light-emitting diode LED21 is also on, and meanwhile, voice signals are also reported. When the rechargeable battery B is not charged, the utility model can still measure that the light-emitting diodes LED11 and LED22 can also emit light, has extremely high reliability and is easy to popularize and apply.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the multifunctional test pencil of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the utility model only and should not be taken as limiting the scope of the utility model. The specific techniques, connections, conditions, or the like, which are not specified in the examples, are performed according to the techniques, connections, conditions, or the like described in the literature in the art or according to the product specification. The materials, instruments or equipment are not indicated by manufacturers, and all the materials, instruments or equipment are conventional products which can be obtained by purchasing.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" as used herein may include wirelessly connected. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "provided" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention are understood according to specific situations.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As shown in fig. 1, a multifunctional test pencil comprises a pencil shell, a test head CT mounted at the front end of the pencil shell, and a test contact sheet S mounted at the rear end of the pencil shell; further comprising: the wireless charging system comprises a resistor R01, a resistor R02, a light emitting diode LED11, a light emitting diode LED12, a light emitting diode LED21, a light emitting diode LED22, a triode T11, a triode T22, a triode T21, a voice module YM, a rechargeable battery B and a wireless charging module WXC;
the test head CT is connected with one end of a resistor R01; the other end of the resistor R01 is respectively connected with the cathode of the light-emitting diode LED12 and the anode of the light-emitting diode LED 22;
the anode of the light emitting diode LED12 is connected with the B pole of the triode T11; the E pole of the triode T11 is connected with the negative pole of the light-emitting diode LED 11;
the anode of the light emitting diode LED11 is connected with the E electrode of the triode T22 and the anode of the rechargeable battery B;
the wireless charging module WXC is connected with a rechargeable battery B in parallel;
the C pole of the triode T11 is connected with the negative pole of the LED 21;
the cathode of the light emitting diode LED22 is connected with the B pole of the triode T21; the E pole of the triode T21 is connected with the anode of the light-emitting diode LED 21; the cathode of the light-emitting diode LED21 is also connected with one end of the voice module YM, one end of the resistor R02 and the cathode of the rechargeable battery B respectively;
the other end of the resistor R02 is connected with the test contact piece S;
the C pole of the triode T21 is connected with the B pole of the triode T22; the C pole of the transistor T22 is connected to the other end of the voice module YM.
Further, it is preferable that the transistor T11 and the transistor T22 are both PNP type.
Further, the transistor T21 is preferably of NPN type.
Further, it is preferable that the transistor T11, the transistor T22, and the transistor T21 are S8550, S8050, and S8550, respectively, and the amplification factors thereof are β 11, β 21, and β 22, respectively, and β 11, β 21, and β 22 are not less than 150 times.
Further, it is preferable that the secondary battery B is a lithium battery.
The voice module YM is preferably MX6200 from guangzhou meixin electronic technology limited.
The wireless charging module WXC is preferably a NEWQI product of Audehong electronic technology limited company in Shenzhen city.
The sizes of the resistor R01 and the resistor R02 may be set according to actual conditions.
The working principle of the utility model is as follows:
(1) when the CT contacts a positive potential, a very small current can pass through the test head CT resistance → R01 → the LED22 → the transistor T21B pole → the transistor T21E pole → point O → the resistor R02 → the test contact piece S. The current is amplified by beta 21 times through a triode T21 to make a light emitting diode LED21 emit red light, then amplified by beta 22 times through a triode T22, the power supply on the rechargeable battery B is loaded on the voice module YM, and the horn of the voice module YM can report the' danger of electricity! ".
(2) When the CT contacts a positive potential, extremely tiny current can pass through the test contact sheet S → the resistor R02 → the rechargeable battery B → the light-emitting diode LED11 → the triode T11 → the light-emitting diode LED12 → the resistor R01 → the test head CT, and after the current is amplified by beta 11 times through the triode T21, the light-emitting diode LED11 emits green light, which indicates that the tripping coil of the protection device is connected, and the integrity of a tripping circuit is detected.
(3) The triode T11, the triode T21 and the triode T22 are S8550, S8050 and S8550 respectively, the amplification times of the triodes are beta 11, beta 21 and beta 22 respectively, and the amplification times are not less than 150 times.
(4) The wireless charging module WXC is a micro induction charging module, and the rechargeable battery B is a lithium battery and can automatically stop charging after being fully charged.
(5) The circuit adds the light emitting diode LED12 and the light emitting diode LED22, so that the sum of Vb of the LED11, the LED12, the LED22, the LED21 and the Vbe of the T11 and Vb of the T21 is 9.4V, and the highest voltage of the lithium battery is only 4.2V, so that when the test pencil is not used for measuring, the circuit is cut off, namely, the current is not consumed, and a power switch does not need to be arranged.
(6) The test pencil can also be used as a common test pencil, when alternating current is measured, the light-emitting diode LED11 is on, the light-emitting diode LED21 is also on, and simultaneously, "danger of electricity! "speech signal.
(7) The light emitting diode LED11 and the light emitting diode LED12 are integrated, and the test pencil CT emits red light when measuring a positive potential and emits green light when measuring a negative potential. Yellow light emission was measured on the ac voltage.
(8) The light emitting diodes LED12 and LED22 have ultrahigh potential, are used for preventing light from emitting when the light emitting diodes LED11 and LED11 are not measured, are arranged in the test pencil, and have extremely weak light. The LED12 is a green LED and the LED22 is a red LED.
(9) When the rechargeable battery B is not powered, the light-emitting diodes LED11 and LED21 do not emit light, the voice module YM does not report the danger of power, but the voice module YM can still measure the voltage, and under normal conditions, the direct currents of the direct current system of the power system are all 48V, 110V and 220V, and the voltages are positive and negative 24V, 55V and 110V, so that the light-emitting diodes LED11 and LED22 can also emit light, and only the light is weak, so that the reliability is extremely high.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. A multifunctional test pencil comprises a pencil shell, a test head CT arranged at the front end of the pencil shell, and a test contact piece S arranged at the rear end of the pencil shell; it is characterized by also comprising: the wireless charging system comprises a resistor R01, a resistor R02, a light emitting diode LED11, a light emitting diode LED12, a light emitting diode LED21, a light emitting diode LED22, a triode T11, a triode T22, a triode T21, a voice module YM, a rechargeable battery B and a wireless charging module WXC;
the test head CT is connected with one end of a resistor R01; the other end of the resistor R01 is respectively connected with the cathode of the light-emitting diode LED12 and the anode of the light-emitting diode LED 22;
the anode of the light emitting diode LED12 is connected with the B pole of the triode T11; the E pole of the triode T11 is connected with the negative pole of the light-emitting diode LED 11;
the anode of the light emitting diode LED11 is connected with the E electrode of the triode T22 and the anode of the rechargeable battery B;
the wireless charging module WXC is connected with a rechargeable battery B in parallel;
the C pole of the triode T11 is connected with the negative pole of the LED 21;
the cathode of the light emitting diode LED22 is connected with the B pole of the triode T21; the E pole of the triode T21 is connected with the anode of the light-emitting diode LED 21; the cathode of the light-emitting diode LED21 is also connected with one end of the voice module YM, one end of the resistor R02 and the cathode of the rechargeable battery B respectively;
the other end of the resistor R02 is connected with the test contact piece S;
the C pole of the triode T21 is connected with the B pole of the triode T22; the C pole of the transistor T22 is connected to the other end of the voice module YM.
2. The multi-functional test pencil of claim 1 wherein transistor T11 and transistor T22 are both PNP type.
3. The multi-functional test pencil of claim 1 wherein the transistor T21 is NPN type.
4. The multifunctional test pencil of claim 1, wherein the transistor T11, the transistor T22, and the transistor T21 are S8550, S8050, and S8550, respectively, and the amplification factors thereof are β 11, β 21, β 22, and none of β 11, β 21, and β 22 is less than 150.
5. The multifunctional test pencil of claim 1 wherein the rechargeable battery B is a lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121206507.4U CN216082905U (en) | 2021-06-01 | 2021-06-01 | Multifunctional test pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121206507.4U CN216082905U (en) | 2021-06-01 | 2021-06-01 | Multifunctional test pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216082905U true CN216082905U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121206507.4U Active CN216082905U (en) | 2021-06-01 | 2021-06-01 | Multifunctional test pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216082905U (en) |
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2021
- 2021-06-01 CN CN202121206507.4U patent/CN216082905U/en active Active
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