CN214097696U

CN214097696U - Electronic component identification and parameter measurement device

Info

Publication number: CN214097696U
Application number: CN202022338160.0U
Authority: CN
Inventors: 荣军; 汤飞球; 黄率颖; 万军华
Original assignee: Hunan Institute of Science and Technology
Current assignee: Hunan Institute of Science and Technology
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-08-31
Anticipated expiration: 2030-10-20

Abstract

The utility model relates to the technical field of electronic measuring equipment, in particular to an electronic component identification and parameter measurement device, which comprises a power supply device, a control device, a detection device and a display device, wherein the power supply device, the detection device and the display device are all electrically connected with the control device; the power supply equipment comprises a power supply circuit module and a No. 2 dry battery, and the power supply circuit module is electrically connected with the No. 2 dry battery; the detection equipment comprises a transistor measurement module, an inductance measurement module, a capacitance measurement module and a resistance measurement module; the above structure is adopted in the utility model, through controlgear and check out test set combined action, can automatic identification diode, triode, resistance, electric capacity and inductance electronic components, and the automatic parameter measurement that gets into after the discernment gives accurate measured value. In addition, the electronic component identification and parameter measurement device is convenient to carry and use, simple to operate, short in time and high in efficiency.

Description

Electronic component identification and parameter measurement device

Technical Field

The utility model relates to an electronic measurement equipment technical field specifically is an electronic components discernment and parameter measurement device.

Background

Every electronic amateur encounters the problem that when you detach a transistor from the PCB, it is best if you can identify and find the information about the transistor, but in most cases we cannot find the corresponding information immediately or cannot find the information related to it at all, and if we use the traditional method to determine what kind of transistor the corresponding pin is, it is difficult and time-consuming. It may be an NPN, PNP, N-or P-channel MOSFET, etc. There is therefore a need for a portable electronic transistor tester that can quickly determine the transistor type and pin, and accurately measure the parameters of electronic components.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can the type and the pin of rapid judgement transistor to and the electronic components discernment and the parameter measurement device of accurate measurement electronic components parameter.

In order to achieve the above object, the utility model provides an electronic components discernment and parameter measurement device of following technical scheme, including power supply unit, controlgear, check out test set and display device, power supply unit, check out test set and display device all with controlgear electric connection; the power supply equipment comprises a power supply circuit module and a No. 2 dry battery, and the power supply circuit module is electrically connected with the No. 2 dry battery; the detection device comprises a transistor measurement module, an inductance measurement module, a capacitance measurement module and a resistance measurement module.

Furthermore, the detection equipment is externally connected with the detected electronic component.

Furthermore, the tested electronic components comprise diodes, triodes, inductors, capacitors and resistor components.

Further, the control equipment adopts an ATmega328p singlechip.

Further, the display device includes a display module.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to an electronic component identification and parameter measurement device, which comprises a power supply device, a control device, a detection device and a display device, wherein the power supply device, the detection device and the display device are all electrically connected with the control device; the power supply equipment comprises a power supply circuit module and a No. 2 dry battery, and the power supply circuit module is electrically connected with the No. 2 dry battery; the detection equipment comprises a transistor measurement module, an inductance measurement module, a capacitance measurement module and a resistance measurement module; the above structure is adopted in the utility model, through controlgear and check out test set combined action, can automatic identification diode, triode, resistance, electric capacity and inductance electronic components, and the automatic parameter measurement that gets into after the discernment gives accurate measured value. In addition, the electronic component identification and parameter measurement device is convenient to carry and use, simple to operate, short in time and high in efficiency.

Drawings

Fig. 1 is a block diagram of the present invention;

fig. 2 is a partial schematic diagram of a control device according to the present invention;

FIG. 3 is a schematic diagram of a transistor measurement module according to the present invention;

FIG. 4 is a schematic diagram of a resistance measurement module according to the present invention;

fig. 5 is a schematic diagram of an inductance measuring module according to the present invention;

fig. 6 is a schematic diagram of the middle capacitance measuring module of the present invention.

In the figure: 1 power supply equipment, 2 control equipment, 3 detection equipment, 4 display equipment, 5 power supply circuit modules and No. 62 dry battery.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: an electronic component identification and parameter measurement device comprises a power supply device 1, a control device 2, a detection device 3 and a display device 4, wherein the power supply device 1, the detection device 3 and the display device 4 are electrically connected with the control device 2; the power supply equipment 1 comprises a power supply circuit module 5 and a No. 2 dry battery 6, wherein the power supply circuit module 5 is electrically connected with the No. 2 dry battery 6; in this embodiment, the power supply device 1 is configured to supply power to the control device 2, the detection device 3, and the display device 4, so as to ensure that the whole measurement apparatus can be normally performed, where the detection device 3 includes a transistor measurement module, an inductance measurement module, a capacitance measurement module, and a resistance measurement module.

Specifically, the detection device 3 is externally connected with an electronic component to be detected; the tested electronic component comprises a diode, a triode, an inductor, a capacitor and a resistance component, and the triode comprises an MOSFET (metal-oxide-semiconductor field effect transistor) and a JFET (junction field effect transistor).

Specifically, the control device 2 adopts an ATmega328p singlechip, and the information processing and conversion can be performed on the whole measuring device through the ATmega328p singlechip.

Specifically, the display device 4 includes a display module, and the display module can accurately display the corresponding symbol and measurement parameter of the electronic component to be tested.

Referring to fig. 2, in a partial schematic diagram of the control device, the control device 2 adopts an ATmega328P single chip microcomputer, P3 is three ports for testing, and during testing, a device to be tested can be arbitrarily connected to the three ports, ISP10 is a program burning interface, and PDs 0 to PD5 are liquid crystal control interfaces.

Referring to fig. 3, the transistor measurement module is a mosfet, and it is not necessary to set one of the test ports (set as H pin) to connect with the anode of the device, and directly connect to VCC, and the other two test ports (set as L pin and T pin) to connect with the cathode of the device, and connect to GND through a 680 Ω resistor. The type of the field effect transistor depends on the gate level voltage, the upper state is kept for 5ms, and the voltage of an ADC (analog-to-digital conversion) reading L pin in the ATmega singlechip is set as vCEs in the period of time. Then, the T pin is set to the input state (high impedance state) for 5ms, and the voltage at the readout L pin is set to lp _ otr. Then, the T pin is connected to VCC through a 680 Ω resistor and held for 5ms, and the voltage at the L pin is read out and set to lp 2. If lp2 is less than vCEs then the foregoing assumption holds, and the voltage of the L pin, lp _ otr, is measured again with the T pin set to the input state. If vCEs +100> lp-ort and vCEs >115 then the measurement tube can be determined to be depleted.

Referring to fig. 4, in the resistance measuring module, each resistance is measured four times in four different directions in the same current direction, and the current direction opposite to the resistance is also measured four times in the same method, the measurement in the opposite direction is to determine whether the resistance is the resistance, and if the difference between the resistance values measured in the positive and negative directions is too large, the resistance is not the resistance.

Referring to fig. 5, the measurement principle of the inductance measurement module is to measure the inductance based on the characteristic that the current at the two ends of the inductance cannot change suddenly, and the current can be indirectly calculated through the voltage drop at the two ends of the resistor by using a calculation formula of increasing the current.

Referring to fig. 6, the measurement principle of the capacitance measurement module is to fix the charging time, sample the voltage of the measurement pin by AD after the time is reached, and calculate the value of the capacitance according to the voltage value sampled by AD and the resistance value during charging.

When the utility model is used, firstly, the power-on awakening function is realized, the automatic power supply closing function is realized, after the power supply is switched on, the control circuit module is awakened by pressing a reset key, no measurement is carried out after a period of time, the system automatically closes the power supply, after the device enters a working state, the detection circuit module automatically detects and judges whether the device is an NPN triode or a PNP triode, an N-or P-channel MOSFET (metal-oxide-semiconductor field effect transistor), a JFET (junction field effect transistor) and automatically detects and judges a pin corresponding to a detected component, the symbol of the triode and corresponding tube voltage drop, cathode and anode and tube voltage drop are displayed on the display module, the display circuit module displays the current amplification factor beta and the voltage drop between a base electrode and an emitting electrode after the triode is judged to be the triode, the threshold voltage is measured and displayed after the MOSFET is judged to be the resistance, the resistance symbol and the resistance value are measured and displayed after the capacitance is judged to be the capacitance, and measuring and displaying the symbol of the inductance and the value of the inductance after judging the inductance.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the invention, as defined by the claims and the equivalents thereof, and which fall within the limits of the claims and the equivalents thereof.

Claims

1. An electronic component identification and parameter measurement device is characterized in that: the power supply device comprises a power supply device (1), a control device (2), a detection device (3) and a display device (4), wherein the power supply device (1), the detection device (3) and the display device (4) are electrically connected with the control device (2); the power supply equipment (1) comprises a power supply circuit module (5) and a No. 2 dry battery (6), wherein the power supply circuit module (5) is electrically connected with the No. 2 dry battery (6); the detection device (3) comprises a transistor measurement module, an inductance measurement module, a capacitance measurement module and a resistance measurement module.

2. An electronic component identification and parameter measurement device as claimed in claim 1, wherein: the detection equipment (3) is externally connected with an electronic component to be detected.

3. An electronic component identification and parameter measurement device as claimed in claim 2, wherein: the tested electronic components comprise diodes, triodes, inductors, capacitors and resistor components.

4. An electronic component identification and parameter measurement device as claimed in claim 1, wherein: the control device (2) adopts an ATmega328p singlechip.

5. An electronic component identification and parameter measurement device as claimed in claim 1, wherein: the display device (4) comprises a display module.