CN201965172U

CN201965172U - Novel power voltage detection device

Info

Publication number: CN201965172U
Application number: CN 201120064086
Authority: CN
Inventors: 许芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-14
Filing date: 2011-03-14
Publication date: 2011-09-07
Anticipated expiration: 2021-03-14

Abstract

The utility model discloses a novel power voltage detection device which comprises a power supply module, voltage detection modules, a current detection module, a threshold cut-off voltage protection module, a microprocessor and a display module; the power supply module is connected with a power supply to be detected through the threshold cut-off voltage protection module; the voltage detection modules are parallelly connected onto both ends of the power supply to be detected; both ends of the voltage detection modules are parallelly connected with variable electronic loads; the current detection module is serially connected in a loop in which the power supply to be detected and the variable electronic loads; the input end of the microprocessor is electrically connected with the threshold cut-off voltage protection module, the voltage detection modules, the current detection module and the variable electronic loads; and the output end of the microprocessor is electrically connected with the display module. The novel power voltage detection device has the advantages that the power voltage is tested fully automatically, the input, the output and the protection characteristics of a single power board are comprehensively tested, the test is convenient, the test results are accurate, and the display is intuitive.

Description

A kind of novel supply voltage pick-up unit

Technical field

The utility model relates to voltage detecting, is specifically related to a kind of novel supply voltage pick-up unit.

Technical background

The power supply test of power supply single, power source single-board comprises output-index test and protection feature test two large divisions; wherein; the output-index test is the index request according to design; test out tested power supply under different input voltage situations; change the size of tested power supply electronic load; test out tested electric power output voltage and current signal, judge that according to the result of test tested power source voltage regulation, load regulation, lasting accuracy are whether in suitable scope.

Existing power panel class supply voltage test is by the artificial size of input power supply and the size of variable load adjusted, adopt the tested power supplys of instrument test such as multimeter, reometer, signal after the test is generally observed by instruments such as oscillographs, in this course, because there is the defective that surpasses the last lower threshold value of tested power supply easily in the artificial input power supply of adjusting; The result of Meter Test is by manually observing, and has that test result is inaccurate, a complex operation, easy amiss defective.

Summary of the invention

The purpose of this utility model is to overcome the defective that exists in the test of existing power supply plate class supply voltage, and provide a kind of test result accurately, novel supply voltage pick-up unit visual, simple to operate directly perceived.

For realizing this purpose; a kind of novel supply voltage pick-up unit that the utility model is designed; comprise the power supply module; voltage detection module; current detection module; it also comprises threshold value shutoff voltage protection module; microprocessor and display module; described power supply module passing threshold shutoff voltage protection module connects tested power supply; described voltage detection module is connected in parallel on the two ends of tested power supply; the two ends of described voltage detection module are parallel with the variable electronic load; described current detection module is connected in tested power supply and the loop that the variable electronic load is connected; the input end of described microprocessor is electrically connected threshold value shutoff voltage protection module; voltage detection module; current detection module and variable electronic load, the output terminal of described microprocessor is electrically connected display module.

Adopt the following beneficial effect that the utlity model has of technique scheme:

1, power supply module passing threshold shutoff voltage protection module of the present utility model connects tested power supply, increased and crossed threshold value turn-off protection function, the voltage of power supply be higher or lower than tested power supply on during lower threshold value, can realize the turn-off protection function, reduce test errors;

2, the input end of microprocessor is electrically connected voltage detection module, current detection module and variable electronic load, and the size of variable electronic load is controlled by microprocessor, has increased accuracy of test; Test result is input in the microprocessor, by analytical calculation, outputs to display module, shows test result, and is accurately directly perceived.

Description of drawings

Fig. 1 is a schematic block circuit diagram of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As shown in Figure 1; the utility model supply voltage pick-up unit; comprise the power supply module; voltage detection module; current detection module; it also comprises threshold value shutoff voltage protection module; microprocessor and display module; described power supply module passing threshold shutoff voltage protection module connects tested power supply; described voltage detection module is connected in parallel on the two ends of tested power supply; the two ends of described voltage detection module are parallel with the variable electronic load; described current detection module is connected in tested power supply and the loop that the variable electronic load is connected; the input end of described microprocessor is electrically connected threshold value shutoff voltage protection module; voltage detection module; current detection module and variable electronic load, the output terminal of described microprocessor is electrically connected display module.

The utility model is automatically finished the test of supply voltage, the input of full test power source single-board, output and protection feature, and test operation is convenient, and test result is accurate, intuitive display.

The described content of this instructions embodiment only be to the way of realization of the utility model design for example, protection domain of the present utility model should not only limit to the concrete form that this embodiment is stated.Under every situation that does not break away from the utility model design, all belong to interest field of the present utility model.

Claims

1. novel supply voltage pick-up unit; comprise the power supply module; voltage detection module; current detection module; it is characterized in that: it also comprises threshold value shutoff voltage protection module; microprocessor and display module; described power supply module passing threshold shutoff voltage protection module connects tested power supply; described voltage detection module is connected in parallel on the two ends of tested power supply; the two ends of described voltage detection module are parallel with the variable electronic load; described current detection module is connected in tested power supply and the loop that the variable electronic load is connected; the input end of described microprocessor is electrically connected threshold value shutoff voltage protection module; voltage detection module; current detection module and variable electronic load, the output terminal of described microprocessor is electrically connected display module.