CN212965127U

CN212965127U - Simple PCB device for current test

Info

Publication number: CN212965127U
Application number: CN202021732904.0U
Authority: CN
Inventors: 陈奇
Original assignee: Quzhou Xindao Electronic Technology Co ltd
Current assignee: Quzhou Xindao Electronic Technology Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-04-13
Anticipated expiration: 2030-08-19

Abstract

The utility model provides a simple and easy PCB board device for current test, including the PCB board, the PCB board on have the power supply board connector, the mainboard connector and the hall current sensor that await measuring, the power supply board connector include a plurality of power supply terminals that are used for connecting each power supply output of power supply board respectively, the mainboard connector that awaits measuring including being used for connecting respectively the power consumption terminal of the mainboard each power consumption passageway input that awaits measuring, two control current ends of hall current sensor all are connected with the measurement terminal, hall current sensor's measurement output is connected in the voltmeter. This scheme can convenient and fast ground carry out each inside circuit current consumption monitoring test of mainboard.

Description

Simple PCB device for current test

Technical Field

The utility model belongs to the technical field of current detection, especially, relate to a simple and easy PCB board device for current test.

Background

When testing electrical performance parameters of the whole machine, current consumption conditions of each power supply circuit of the main board often need to be tested for evaluating one parameter of whether the power panel is adaptive, and a common current testing mode is to connect a current probe to an oscilloscope for testing or to connect an ammeter in series on power supply lines of the power panel and the main board for testing. The current test mode of the whole machine has the problems of high test cost or inconvenient test, and is not suitable for monitoring and testing the current consumption of each circuit in the whole machine.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a simple and easy PCB board device for current test.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a simple and easy PCB board device for current test, includes the PCB board, the PCB board on have a supply board connector, the mainboard connector and the hall current sensor that await measuring, the supply board connector include a plurality of power supply terminal that are used for connecting each power supply output end of supply board respectively, the mainboard connector that awaits measuring including being used for connecting the power consumption terminal of the mainboard that awaits measuring respectively with the power channel input end, two control current ends of hall current sensor all are connected with the measurement terminal, hall current sensor's measurement output is connected in the voltmeter.

In the simple PCB apparatus for testing current, the voltmeter is mounted on the PCB, and the voltmeter is connected to the measuring output terminal of the hall current sensor.

In the simple PCB device for testing current, the PCB has a voltage terminal connected to the measuring output terminal, and the voltage terminal is used for connecting an external voltmeter.

In the simple PCB apparatus for testing current, the number of the power posts of the motherboard connector to be tested is greater than or equal to the number of the power posts of the motherboard connector.

In the above-described simple PCB panel apparatus for current testing, each power supply terminal corresponds to one output voltage of the power panel.

In the simple PCB panel apparatus for current test described above, the kinds of output voltages of the power panel include a 12V output, a STB output, and a 5V output.

In the simple PCB apparatus for current testing described above, each of the power consumption terminals corresponds to one power consumption channel of the main board to be tested.

In the above simple PCB apparatus for current testing, each of the electric terminals corresponds to an input voltage of the main board to be tested.

In the simple PCB apparatus for testing current, the voltmeter is connected to the controller, and the controller stores therein a calculating circuit for calculating the channel current.

In the simple PCB apparatus for current testing, the controller is connected to a memory for storing current data of each channel;

the controller is connected with a display screen for displaying current data of each channel.

The utility model has the advantages that: the structure is simple, the device is economical and practical, and the current test is flexible; the monitoring and testing of the current consumption of each circuit in the mainboard can be conveniently and rapidly carried out.

Drawings

Fig. 1 is a circuit structure diagram of the hall current sensor of the present invention;

fig. 2 is a schematic structural diagram of the PCB apparatus of the present invention.

Reference numerals: a PCB board 1; a power board connector 2; a power supply terminal 21; a mainboard connector 3 to be tested; the power consumption terminal 31; a Hall current sensor 4; the measuring post 41; and a voltmeter 5.

Detailed Description

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

As shown in fig. 1 and fig. 2, this embodiment discloses a simple and easy PCB device for current test, including PCB 1, PCB 1 is last to have mains board connector 2, the mainboard connector 3 that awaits measuring, hall current sensor 4 and voltmeter 5, mains board connector 2 includes a plurality of power supply terminal 21 that are used for connecting each power supply output end of mains board respectively, mainboard connector 3 that awaits measuring includes the power consumption terminal 31 that is used for connecting each power consumption passageway input end of mainboard that awaits measuring respectively, two control current end IP of hall current sensor 4, IP + all is connected with measurement terminal 41, hall current sensor 4's measurement output end is connected in voltmeter 5.

Specifically, the number of the power consumption posts 31 of the board connector 3 to be tested is greater than or equal to the number of the power supply posts 21 of the board connector 2.

Further, each power supply terminal 21 corresponds to an output voltage of the power supply board, for example, when there are five power supply terminals 21, the five power supply terminals 21 are used for being connected to the 12V output, STB output, 5V output, 3.8V output and 2.5V output of the power supply board, respectively.

Accordingly, each power consumption terminal 31 corresponds to one power consumption channel of the main board to be tested.

At this time, the number of the power consumption posts 31 of the motherboard connector 3 to be tested is greater than the number of the power supply posts 21 of the motherboard connector 2, for example, the 5V power supply output end of the power supply board can simultaneously supply power to two power consumption loops requiring 5V voltage on the motherboard to be tested.

It is also possible to design each power connector 31 to correspond to an input voltage of the board to be tested. At this time, the number of the power consumption posts 31 of the board connector 3 to be tested is equal to the number of the power supply posts 21 of the board connector 2. When two power utilization loops need the same voltage, one power utilization loop is selected to be connected or the other power utilization loop is connected after one power utilization loop is tested.

This embodiment is with supply board connector 2, the main board connector 3 that awaits measuring, hall current sensor 4 and voltmeter 5 are installed on PCB board 1 in unison, pass through power consumption passageway input and power supply output split with supply channel simultaneously, then when measuring, through hall current sensor 4 and corresponding power supply terminal 21, power consumption terminal 31 and test terminal 41 with the power consumption passageway input that belongs to same supply channel and power supply output end be connected and can measure the current value of this supply channel.

The user reads the data of the voltmeter, and according to the relation between the voltage output and the current input of the Hall current sensor, the channel current is calculated as follows:

Vout＝Vout(Q)+Vsens*I

vout (Q) is the quiescent output voltage, Vsens is the sensor sensitivity scale, and I is the channel current.

In the process of using the device, the user of the embodiment records the voltage value (vout (q)) for each time, and then calculates the current value through the above formula in a unified manner.

Or, before using the device, the possible current measurement result is converted into voltage according to the formula, so that a user can judge whether the power supply is good or not by directly observing the voltage value during testing.

Example two

The present embodiment is similar to the present embodiment, except that the PCB board 1 of the present embodiment has a voltage terminal connected to the measurement output terminal, and the voltage terminal is used for connecting to an external voltmeter 5.

The embodiment adopts the external voltmeter, can change the voltmeter as required, reduces the cost of every PCB board device simultaneously.

EXAMPLE III

The present embodiment is similar to the present embodiment, except that the voltmeter 5 of the present embodiment is connected to a controller, and a calculating circuit for calculating the channel current is stored in the controller. The controller is connected with a memory for storing current data of each channel; the controller is connected with a display screen for displaying current data of each channel.

The measurement current is calculated according to the measurement voltage of the Hall sensor by directly adopting the prior art, namely the following calculation formula is embedded into a calculation circuit:

Vout＝Vout(Q)+Vsens*I

and the controller calculates and outputs the current of each channel according to the calculation formula.

The embodiment completes the work before or after manual measurement by the controller, and has higher automation effect.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the PCB board 1 is used more herein; a power board connector 2; a power supply terminal 21; a mainboard connector 3 to be tested; the power consumption terminal 31; a Hall current sensor 4; the measuring post 41; voltmeter 5, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a simple and easy PCB board device for current test, a serial communication port, including PCB board (1), PCB board (1) on have power board connector (2), await measuring mainboard connector (3) and hall current sensor (4), power board connector (2) including a plurality of power supply terminal (21) that are used for connecting each power supply output of power board respectively, mainboard connector (3) of awaiting measuring including being used for connecting power consumption terminal (31) of each power consumption passageway input of mainboard that awaits measuring respectively, two control current ends of hall current sensor (4) all are connected with measurement terminal (41), the measurement output of hall current sensor (4) is connected in voltmeter (5).

2. The simplified PCB apparatus for current testing as claimed in claim 1, wherein the voltmeter (5) is installed on the PCB (1), and the voltmeter (5) is connected to the measurement output terminal of the hall current sensor (4).

3. The simplified PCB apparatus for current testing as claimed in claim 1, wherein the PCB (1) has a voltage terminal connected to the measurement output terminal, and the voltage terminal is used for connecting an external voltmeter (5).

4. The simplified PCB apparatus for current testing of claim 2 or 3, wherein the number of power utilization terminals (31) of the board connector (3) to be tested is greater than or equal to the number of power supply terminals (21) of the board connector (2).

5. The simplified PCB apparatus for current testing as recited in claim 4, wherein each power terminal (21) corresponds to an output voltage of the power board.

6. The simplified PCB apparatus for current testing as recited in claim 5, wherein the output voltage categories of the power panel include 12V output, STB output and 5V output.

7. The simplified PCB device for current testing as recited in claim 5, wherein each power utilization terminal (31) corresponds to a power utilization channel of the main board to be tested.

8. The simplified PCB apparatus for current testing as recited in claim 5, wherein each power-consuming terminal (31) corresponds to an input voltage of the main board to be tested.

9. The simplified PCB apparatus for current testing as claimed in any one of claims 1-3, wherein the voltmeter (5) is connected to a controller, and the controller stores therein a calculating circuit for calculating the channel current.

10. The simplified PCB apparatus for current testing as claimed in claim 9, wherein the controller is connected with a memory for storing current data of each channel;