CN211603326U

CN211603326U - Multifunctional test pencil

Info

Publication number: CN211603326U
Application number: CN201921721790.7U
Authority: CN
Inventors: 符辰勤
Original assignee: Huizhou Fuyi Electronic Technology Co Ltd
Current assignee: Huizhou Fuyi Electronic Technology Co Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-09-29
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses a multi-functional test pencil, its characterized in that: the pen-shaped shell, a circuit board, an MCU processor, a polymer nano magnetic induction probe, a probe protective cap, an induction distance adjusting knob, an LCD display screen, an indicator light, a buzzer, a battery and control keys, wherein the circuit board comprises a non-contact voltage induction circuit module and a contact voltage test calculation module, the MCU processor is arranged on the circuit board, the non-contact voltage induction circuit module and the contact voltage test calculation module are connected with the MCU processor, and the MCU processor is connected with the LCD display screen, the indicator light and the buzzer. The utility model belongs to the technical field of the test pencil, specifically indicate a combine together contact and non-contact, can accurately show the voltage value, can survey multi-functional test pencil of wall body dark line.

Description

Multifunctional test pencil

Technical Field

The utility model belongs to the technical field of the test pencil, specifically indicate a multi-functional test pencil.

Background

Most of the test pens on the market at present are of a contact type or a non-contact type single test type, but are suitable for non-contact type in certain environments, and are suitable for contact type in some environments, and both have limitations on the application range; in addition, most of the conventional test pens use LED indicator lamps for indication, but the LED lamps used in some specific environments have poor display effects, and the greater defect is that accurate voltage values cannot be displayed, so that misjudgment is easily caused by users; the existing test pencil in the market can not detect whether the electric equipment shell leaks electricity or not quickly, the using effect is poor or even misjudgment is caused, the damage of the equipment is caused, the potential safety hazard is brought, the existing test pencil in the market can not detect the electric wire embedded in the wall body, and the test depth can not meet the requirement.

Disclosure of Invention

For solving the above-mentioned current difficult problem, the utility model provides a combine together contact and non-contact, can accurate demonstration voltage value to can survey the multi-functional test pencil that the wall body buried wire reaches 5 centimeters in advance.

The utility model adopts the following technical scheme: the utility model relates to a multifunctional test pencil, which comprises a pencil-shaped shell, a circuit board, an MCU processor, an inductive probe, a probe protective cap, an inductive distance adjusting knob, an LCD display screen, an indicator light, a buzzer, a battery and a control key, wherein the pencil-shaped shell is arranged in a hollow way, the inductive probe is arranged at the front end of the pencil-shaped shell, the probe protective cap can be buckled on the inductive probe, the circuit board and the battery are arranged in the pencil-shaped shell, the battery supplies power for the whole test pencil, the inductive distance adjusting knob, the LCD display screen, the indicator light, the buzzer and the control key are arranged on the outer surface of the pencil-shaped shell, the inductive distance adjusting knob adjusts the inductive sensitivity to change the adjustment of non-contact inductive depth, the inductive distance adjusting knob rotates leftwards to increase the sensitivity and rotates rightwards to reduce the sensitivity, the aim of testing the dark line voltage of a wall body is achieved, the inductive probe is connected with the circuit board and, the circuit board comprises a non-contact voltage sensing circuit module and a contact voltage testing and calculating module, the MCU processor is arranged on the circuit board, the non-contact voltage sensing circuit module and the contact voltage testing and calculating module are connected with the MCU processor, the sensing probe tests the voltage of a wall wire through the non-contact voltage sensing circuit module, the sensing probe directly tests the voltage value of a charged body through the contact voltage testing and calculating module, the non-contact voltage sensing circuit module and the contact voltage testing and calculating module output signals to the MCU processor, so that the effect of simultaneously testing the dark line voltage value of the non-contact wall body and the voltage value of the contact charged body is achieved, the MCU processor is connected with the LCD display screen, the indicator lamp and the buzzer, the MCU processor analyzes the type and the size of the signals through measurement and sends corresponding signals to the LCD display screen according to the size and the type of the signals, The indicating lamp and the buzzer, the LCD display screen, the indicating lamp and the buzzer display, light and buzz according to the signals.

Further, the LCD display screen comprises a voltage test value display and a voltage intensity identification display, wherein the voltage test value display is displayed by adding an Arabic number to a voltage symbol V, the voltage intensity identification display is displayed by a symbol L/H and simulation bars, the L/H is the height of the induction voltage intensity, the L represents the range of low voltage and the H displays high voltage, the simulation bars are arranged along the length direction of the LCD display screen according to the corresponding quantity of the induction voltage.

Further, the LCD display screen further comprises a starting-up state display, a battery under-voltage display and a warning display, wherein the starting-up state display comprises an alternating current symbol and a low-voltage position symbol, the battery under-voltage display comprises a battery under-voltage symbol and a battery under-voltage prompt, and the warning display is a high-voltage symbol and is used for warning a user when the induction voltage is higher than a set warning value.

Further, a backlight lamp is arranged at the bottom of the LCD display screen and connected with the MCU processor, the backlight lamp is provided with multiple colors, the MCU processor sends corresponding control signals to the backlight lamp according to the magnitude of the induced voltage, and the backlight lamp indicates the intensity of the induced voltage by changing the color of the backlight lamp.

Furthermore, the induction probe is made of a polymer nano magnetic induction material, has high magnetic conductivity and electric conductivity, and can detect the non-contact induction voltage intensity and test the voltage value of the line in a contact manner.

Furthermore, the control key is connected with the MCU processor, the control key comprises a power supply key, a non-contact voltage function key and a contact voltage function key, the power supply key is used for controlling the equipment to be turned on and turned off, the non-contact induced voltage test function is turned on through the non-contact voltage function key, and the contact induced voltage test function is turned on through the contact voltage function key.

Furthermore, the indicator lamp comprises a power indicator lamp and a test indicator lamp, the power indicator lamp can display whether the device is powered on, and the test indicator lamp can display whether the test body is electrified or not according to a signal sent by the MCU processor.

Furthermore, a lighting lamp is arranged on the pen-shaped shell and connected with a power supply key, and the power supply key can be used for switching between a power supply switch and lighting.

Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows:

1. the technical characteristics of the utility model gather contact and non-contact's measurement mode as an organic whole.

2. The voltage strength of the circuit is tested in a non-contact way, and an approximate value of the strength range is displayed by an LED; the voltage of a line or a charged body is tested in a contact mode, and the LED is used for displaying a test value and can be used for testing the unbalance of three-phase voltage; meanwhile, whether the shell of the production equipment leaks electricity or not can be tested.

3. The sensitivity can be adjusted under the non-contact voltage test mode, and when the voltage induction sensitivity is adjusted to be strongest, a 5cm dark line in a cement wall can be detected, so that the problem of home decoration and engineering measurement dark lines is solved.

4. The detection induction head is made of novel nano materials, and has the functions of strong anti-interference capability, firmness, durability and the like; the product not only can well solve most functions required by customers, but also is convenient for operation of operators.

Drawings

Fig. 1 is a schematic structural view of a multifunctional test pencil of the present invention;

fig. 2 is a schematic block diagram of the multifunctional test pencil of the present invention.

The device comprises a pen-shaped shell, a sensing probe, a probe protective cap, a sensing distance adjusting knob, a Liquid Crystal Display (LCD) screen, an indicating lamp, a sensing distance adjusting knob, a buzzer, a control key, a non-contact voltage sensing circuit module, a sensing distance adjusting knob.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the device comprises a pen-shaped housing 1, a circuit board, an MCU processor 11, an inductive probe 2, a probe protective cap 3, an inductive distance adjusting knob 4, an LCD display screen 5, an indicator light 6, a buzzer 7, a battery and a control key 8, wherein the pen-shaped housing 1 is hollow, the inductive probe 2 is arranged at the front end of the pen-shaped housing 1, the probe protective cap 3 can be fastened on the inductive probe 2, the circuit board and the battery are arranged in the pen-shaped housing 1, the inductive distance adjusting knob 4, the LCD display screen 5, the indicator light 6, the buzzer 7 and the control key 8 are arranged on the outer surface of the pen-shaped housing 1, the inductive sensitivity is adjusted by the inductive distance adjusting knob 4, so as to change the non-contact inductive depth, the inductive probe 2 is connected with the circuit board and extends into the pen-shaped housing 1, the circuit board comprises a non-contact voltage inductive circuit module 9 and a contact voltage test calculation module 10, the MCU processor 11 is arranged on the circuit board, the non-contact voltage induction circuit module 9 and the contact voltage test calculation module 10 are connected with the MCU processor 11, the induction probe 2 tests the voltage of the electric wire of the wall body through the non-contact voltage induction circuit module 9, the induction probe 2 directly tests the voltage value of the charged body through the contact voltage test calculation module 10, the induction probe 2 outputs signals to the MCU processor 11 through the non-contact voltage induction circuit module 9 and the contact voltage test calculation module 10, the MCU processor 11 is connected with the LCD display screen 5, the indicator lamp 6 and the buzzer 7, the MCU processor 11 analyzes the type and the size of the signals through measurement and sends corresponding signals to the LCD display screen 5, the indicator lamp 6 and the buzzer 7 according to the size and the type of the signals, the LCD display screen 5, the indicator lamp 6 and the buzzer 7 display, display and control the voltage of the wall body according to the signals, Lighting and buzzing.

The LCD display screen 5 comprises a voltage test value display and a voltage intensity identification display, wherein the voltage test value display is displayed by adding an Arabic number to a voltage symbol V, the voltage intensity identification display is displayed by a symbol L/H and simulation strips, the L/H is the height of induction voltage intensity, the L represents a low voltage range, the H displays a high voltage range, the simulation strips are arranged in the length direction of the LCD display screen 5 according to the corresponding quantity of the induction voltage. The LCD display screen 5 further comprises a starting-up state display, a battery under-voltage display and a warning display, wherein the starting-up state display comprises an alternating current symbol and a low-voltage position symbol, the battery under-voltage display comprises a battery under-voltage symbol and a battery under-voltage prompt, and the warning display is a high-voltage symbol and is used for warning a user when the induction voltage is higher than a set warning value. The bottom of the LCD display screen 5 is provided with a backlight which is connected with the MCU processor 11, the backlight is provided with a plurality of colors, the MCU processor 11 sends a corresponding control signal to the backlight according to the magnitude of the induced voltage, and the backlight indicates the intensity of the induced voltage by changing the backlight color. The induction probe 2 is made of a polymer nano magnetic induction material, has high magnetic conductivity and electric conductivity, and can detect the non-contact induction voltage intensity and test the line voltage value in a contact mode. The control key 8 is connected with the MCU processor 11, the control key 8 comprises a power key 12, a non-contact voltage function key 13 and a contact voltage function key 14, the power key 13 is used for controlling the equipment to be turned on and turned off, the non-contact induced voltage test function is turned on through the non-contact voltage function key 13, and the contact induced voltage test function is turned on through the contact voltage function key 14. The indicator lamp 6 comprises a power indicator lamp 15 and a test indicator lamp 16, the power indicator lamp 15 can display whether the device is powered on, and the test indicator lamp 16 can display whether the test body is electrified or not according to a signal sent by the MCU processor 11. The pen-shaped shell 1 is provided with an illuminating lamp which is connected with the power key 12, and the power key 15 can be used for switching power on and off and illumination.

When the device is used specifically, the probe protective cap 3 is taken down firstly, the power supply key 12 is pressed for starting up, when a non-contact voltage test is carried out, the non-contact voltage function key 13 is pressed for starting the induction voltage test firstly, then the sensitivity of the induction distance adjusting knob 4 is adjusted, the change of the non-contact induction depth is realized, then the alternating current charged body is measured, and an electromagnetic signal is received, the electromagnetic signal is transmitted to a circuit board through the induction probe 2 and is processed by the MCU processor 11, the buzzer 7 sends out buzzing, the test indicator light 16 flickers, and the LCD display screen 5 displays the induction voltage intensity and simulation strips; when a contact voltage test is carried out, the induction probe 2 is contacted with a live wire of an alternating current electrified body, then a contact voltage function key 14 is pressed, a voltage signal is modulated and then transmitted to the MCU processor 11, under the condition of electricity, the MCU processor controls 11 the buzzer 7 to send out a buzzing indication, the test indicator lamp 16 is lightened (the electricity-free test indicator lamp 16 is not lightened), and the LCD display screen 5 displays an alternating current voltage value; when a wall body is tested, the non-contact voltage function button 13 is pressed to detect the voltage of the wall body, the induction probe 2 is made of a high-molecular nano magnetic induction material and has a superconducting function, the depth of a wire in the wall body can be tested to be 5cm through the induction of the contact between the induction probe 2 and the wall body, and when the wire passes through the wall body, the device can sense the voltage signal of the wire and send buzzing through the buzzer 7 to prompt; when the three-phase voltage balance is detected, the contact voltage function key 14 is pressed to start the contact induction voltage test function, the three single-phase live wire contacts are respectively tested by using the induction probe 2, the voltage value is displayed on the LCD display screen 5, and the voltage difference between each single phase after the equipment is installed can be rapidly judged, so that whether the three-phase power supply voltage is balanced or not is rapidly judged, and the electricity utilization safety is ensured; when the device is used for detecting the leakage of electricity of the test equipment, the induction probe 2 is contacted with the device to be detected, the contact induction voltage test function is started by pressing the contact voltage function key 14, the simulation ground is formed inside the device through the simulation of the large-scale integrated circuit inside the device to be detected, the voltage of a detected charged body can be tested without forming a loop and is displayed through the LCD display screen 5, meanwhile, the power indicator lamp 15 can be lightened, the problem of the leakage of electricity of a motor and large-scale equipment can be detected, and the safety problem of electricity utilization in safety production is solved.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. A multifunctional test pencil is characterized in that: the pen-shaped shell is hollow, the induction probe is arranged at the front end of the pen-shaped shell, the probe protective cap can be arranged on the induction probe in a buckling mode, the circuit board and the battery are arranged in the pen-shaped shell, the induction distance adjusting knob, the LCD display screen, the indicator lamp, the buzzer and the control key are arranged on the outer surface of the pen-shaped shell, the induction distance adjusting knob adjusts induction sensitivity to change non-contact induction depth adjustment, the induction probe is connected with the circuit board and stretches into the pen-shaped shell, the circuit board comprises a non-contact voltage induction circuit module and a contact voltage testing and calculating module, the MCU processor is arranged on the circuit board, and the non-contact voltage induction circuit module and the contact voltage testing and calculating module are connected with the MCU processor, the induction probe tests the voltage of the electric wire of the wall body through the non-contact voltage induction circuit module, the induction probe directly tests the voltage value of the charged body through the contact voltage testing and calculating module, the non-contact voltage induction circuit module and the contact voltage testing and calculating module output signals to the MCU processor, and the MCU processor is connected with the LCD display screen, the indicator lamp and the buzzer.

2. The multifunctional test pencil of claim 1, wherein: the LCD display screen comprises a voltage test value display and a voltage intensity identification display, wherein the voltage test value display is displayed by adding an Arabic number to a voltage symbol V, the voltage intensity identification display is displayed by a symbol L/H and a simulation strip, the L/H is the height of induction voltage intensity, the L represents a low voltage range, the H displays a high voltage range, the simulation strip is arranged in the length direction of the LCD display screen according to the corresponding quantity of the induction voltage.

3. The multifunctional test pencil of claim 1, wherein: the LCD display screen further comprises a starting-up state display, a battery under-voltage display and a warning display, wherein the starting-up state display comprises an alternating current symbol and a low-voltage position symbol, the battery under-voltage display comprises a battery under-voltage symbol and a battery under-voltage prompt, and the warning display is a high-voltage symbol and is used for warning a user when the induction voltage is higher than a set warning value.

4. The multifunctional test pencil of claim 1, wherein: the LCD display screen is characterized in that a backlight lamp is arranged at the bottom of the LCD display screen and connected with the MCU processor, the backlight lamp is provided with multiple colors, the MCU processor sends corresponding control signals to the backlight lamp according to the magnitude of the induced voltage, and the backlight lamp indicates the intensity of the induced voltage by changing the color of the backlight lamp.

5. The multifunctional test pencil of claim 1, wherein: the inductive probe is made of a high-molecular nano magnetic induction material.

6. The multifunctional test pencil of claim 1, wherein: the control key is connected with the MCU processor, the control key comprises a power key, a non-contact voltage function key and a contact voltage function key, the power key is used for controlling the equipment to be started and closed, the non-contact induction voltage test function is started through the non-contact voltage function key, and the contact induction voltage test function is started through the contact voltage function key.

7. The multifunctional test pencil of claim 1, wherein: the indicating lamp comprises a power indicating lamp and a test indicating lamp, the power indicating lamp can display whether the equipment is powered on or not, and the test indicating lamp can display whether the test body is electrified or not according to a signal sent by the MCU processor.

8. The multifunctional test pencil of claim 1, wherein: the pen-shaped shell is provided with an illuminating lamp, the illuminating lamp is connected with a power supply key, and the power supply key can be used for switching between a power supply switch and illumination.