CN203365588U

CN203365588U - Electronic component testing system

Info

Publication number: CN203365588U
Application number: CN 201320465491
Authority: CN
Inventors: 崔海坡; 李哲龙; 周勋; 廖跃华; 沈力行; 尚昆
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2013-12-25
Anticipated expiration: 2023-07-31

Abstract

The utility model relates to an electronic component testing system, comprising a power circuit, an upper computer, a data acquisition module, a signal conditioning circuit, a front transformer, a rear transformer, a noise generator, an alternating current adjustable input power supply, an alternating current filter, a direct current stabilized power supply module and a power-adjustable load. According to the electronic component testing system, two transformers are arranged before and behind the filter, after transformation of voltage before and behind the filter, waveforms before and after filtering are compared, and the data acquisition module performs acquisition; and by changing the power supply amplitude of an input end of the direct current stabilized power supply module and adjusting the power load, voltage stabilization effects are detected. The electronic component testing system in the utility model has the characteristics of being simple in structure, economical and applicable, convenient to operate, and accurate in testing result, and is suitable for performance tests of an alternating current filter and a direct current stabilized power supply module.

Description

The electronic devices and components test macro

Technical field

The utility model relates to a kind of electronic device, particularly a kind of electronic devices and components test macro.

Background technology

Wave filter is a kind of device or circuit that signal is had to the processing effect.Main Function is to allow useful signal zero-decrement passing through as far as possible, the large as far as possible reflection to garbage signal.Alternating current filter is the wave filter designed with the harmonic current that reduce to inject the AC system that is connected for reducing the harmonic voltage on ac bus.Sinewave output voltage obtains waveform filtering such as square wave, Using Sinusoidal Pulse Width Modulation ripple or staircase waveforms through alternating current filter, therefore, and in order to obtain comparatively desirable sine voltage output, so often need to use alternating current filter.

Voltage stabilizer is a kind of feed circuit or the power-supply unit that can automatically adjust output voltage, its effect is that fluctuation is stabilized in its range of set value with the supply voltage that does not reach the electric equipment requirement greatly, and various circuit or electric equipment can be worked under rated operational voltage.

The power supply of D.C. regulated power supply module is mostly AC power, and when the voltage of communication power supply or pull-up resistor change, it is stable that the VD of D.C. regulated power supply module all can keep.

The utility model content

The purpose of this utility model, just be to address the above problem, and a kind of electronic devices and components test macro is provided.

The purpose of this utility model is achieved in that a kind of electronic devices and components test macro, comprises power circuit, host computer, data acquisition module, signal conditioning circuit, front transformer, rear transformer, noisemaker, the adjustable input power of interchange, alternating current filter, D.C. regulated power supply module and power tunable load; Power circuit is respectively with data acquisition module, signal conditioning circuit, front transformer, rear transformer, alternating current filter and exchange adjustable input power and be connected and provide direct current or alternating current to them; Host computer is connected with data acquisition module, and signal conditioning circuit is connected with data acquisition module, front transformer, rear transformer, D.C. regulated power supply module respectively; Noisemaker is connected with alternating current filter; Front transformer, rear transformer also are connected with the front and back of alternating current filter respectively; Exchange adjustable input power and also connect respectively alternating current filter and D.C. regulated power supply module; The power tunable load is connected with the D.C. regulated power supply module.

Described alternating current filter fixture and the D.C. regulated power supply Modular jig of also comprising, described alternating current filter is placed on the alternating current filter fixture, and described D.C. regulated power supply module is placed on the D.C. regulated power supply Modular jig.

Adopt between described host computer and data acquisition module that serial ports is connected, usb bus connects or the pci bus connection.

Described data acquisition module has analog input AD, analog output DA, digital quantity input DI, digital output DO function.

Described power circuit provides 220V or 110V alternating voltage to exchanging adjustable input power, and provides 24V, 12V or 5V DC voltage to signal conditioning circuit, front transformer, rear transformer and alternating current filter respectively.

Described noisemaker produces the man-made noise signal of frequency modulation, amplitude modulation.

The adjustable input power of described interchange provides test voltage for alternating current filter, or provides the interval voltage changed of 90-250V for the D.C. regulated power supply module.

Described power tunable load, by regulating load power, detects the voltage regulation result of D.C. regulated power supply module.

Host computer in the utility model is connected with data acquisition module, sends control signal, and reception is placed on the transformer of alternating current filter front and back and the feedback signal of D.C. regulated power supply module, is detected the performance judgement; Exchanging adjustable input power provides one to exchange amplitude is 90-250V, the variable power supply signal that frequency is 50Hz, 60Hz, noisemaker provides the man-made noise signal of a Frequency Adjustable, amplitude modulation, and alternating current filter receives the noise signal from noisemaker, and makes respective handling; Forward and backward transformer is connected in respectively before and after wave filter, the change in voltage of wave filter before and after the test input noise signal; The power tunable load is connected with the D.C. regulated power supply module, by adjusting, exchanges adjustable input supply voltage (90-250V interval) and power tunable load (0-50W), gathers the output voltage of D.C. regulated power supply module, detects its voltage regulation result; Test figure is saved to PC, and mutual by man-machine interface and operator.

The utlity model has simple in structure, economic and practical, easy to operate, test result characteristics accurately, be applicable to the performance test of alternating current filter, D.C. regulated power supply module, for system, parts type selecting, product detects that foundation is provided.

The accompanying drawing explanation

Fig. 1 is the electrical structure schematic diagram of the utility model test macro;

Fig. 2 is test procedure process flow diagram of the present utility model;

Fig. 3 is alternating current filter fixture schematic diagram;

Fig. 4 is D.C. regulated power supply Modular jig schematic diagram.

Embodiment

Referring to Fig. 1, electronic devices and components test macro of the present utility model, comprise power circuit 1, host computer 2, data acquisition module 3, signal conditioning circuit 4, front transformer 5, rear transformer 6, noisemaker 7, exchange adjustable input power 8, alternating current filter 9, D.C. regulated power supply module 10 and power tunable load 11.Wherein, power circuit 1 is respectively with data acquisition module 3, signal conditioning circuit 4, front transformer 5, rear transformer 6, alternating current filter 9 and exchange adjustable input power 8 and be connected and provide direct current or alternating current to them; Host computer 2 is connected with data acquisition module 3, and signal conditioning circuit 4 is connected with data acquisition module 3, front transformer 5, rear transformer 6, D.C. regulated power supply module 10 respectively; Noisemaker 7 is connected with alternating current filter 9; Front transformer 5, rear transformer 6 also are connected with the front and back of alternating current filter 9 respectively; Exchange adjustable input power 8 and also connect respectively alternating current filter 9 and D.C. regulated power supply module 10; Power tunable load 11 is connected with the D.C. regulated power supply module.

Host computer 2 in the utility model outwards transmits control signal by data acquisition module 3, signal conditioning circuit 4 receptions are placed on the

transformer

5,6 of alternating current filter front and back and the voltage signal of D.C. regulated power supply module 10, feed back to host computer 2, host computer 2 is processed to the received signal, thereby the performance of judgement alternating current filter 9, D.C. regulated power supply module 10, result is mutual by man-machine interface and operator, and data are preserved.

Data acquisition module 3 in the utility model can be changed front transformer 5, rear transformer 6 and D.C. regulated power supply module 10 to input to host computer by AD.

Signal conditioning circuit 4 in the utility model has the function of signal Isolation.

The input power of the power circuit 1 in the utility model is industrial-frequency alternating current 220V50Hz, by transformation and rectification, to exchanging adjustable input power 8 output 220V and 110V alternating voltages, and output 24V, 12V, 5V DC voltage, for data acquisition module 3, signal conditioning circuit 4, front transformer 5, rear transformer 6, alternating current filter 9 provide working power.

Front transformer 5 in the utility model, rear transformer 6 are connected on respectively alternating current filter 9 front and back, are used for, by after the change in voltage transformation before and after alternating current filter, for data acquisition module 3, being gathered.

Noisemaker 7 in the utility model can provide the man-made noise signal of a frequency modulation, amplitude modulation.

Interchange in the utility model is adjustable input power 8, the test that can be alternating current filter 9 provides test voltage, and the test that also can be D.C. regulated power supply module 10 provides the interval voltage changed of 90-250V.

After power tunable load 11 in the utility model is connected on D.C. regulated power supply module 10, by regulating load power, detect the voltage regulation result of D.C. regulated power supply module 10.

As shown in Figure 2, test job process of the present utility model is: after system powers on, select start button, enter into test page, optional stream filters to test or the D.C. regulated power supply module testing of choosing friends.If select the alternating current filter test, start and regulate and exchange adjustable input supply voltage to test voltage, start noisemaker, gather alternating current filter front and back end voltage, and, at host computer PC end display graphics curve, by calculating, judge after filtering whether AC power has overcome voltage disturbance, whether curve is level and smooth, if voltage disturbance is in ± 5%, judge that wave filter is qualified, otherwise judge defective; If select the DC voltage-stabilizing module testing, start and exchange adjustable input power, in the test period (5 minutes), exchange adjustable input supply voltage (90-250V interval) and power tunable load (0～50W) by adjusting, gather the output voltage of DC voltage-stabilizing module, and at host computer PC end display graphics curve, if meeting error were less than ± 2%, judge that the DC voltage-stabilizing module is qualified, otherwise judge defective.

As shown in Figure 3, the alternating current filter fixture in the utility model is comprised of clamp base 14, fixture case 15, movable clamp 16, flexible springs 17 and retaining clip 18.Clamp base 14 is fixed on test board, and fixture case 15 is fixed on clamp base 14, and flexible springs 17 is placed between fixture case 15 and movable clamp 16, and retaining clip 18 also is fixed on clamp base 14.When needs are placed alternating current filter, only need pull out movable clamp 16, it is large that distance between movable clamp 16 and retaining clip 18 just becomes, so that can put down alternating current filter, then activity clamp 16 comes loose, flexible springs 17 will return to original pretension position, so that can clamp alternating current filter, makes it not loosening.

As shown in Figure 4, the D.C. regulated power supply Modular jig in the utility model is comprised of clamp base 19, bread board 20, fixture 21, power connector 24.Clamp base 19 is fixed on test board, and bread board 20 is fixed on clamp base 19, and fixture 21 and power connector 24 are fixed on bread board 20.Pull bar 22 on fixture 21 has two movable gears (horizontal and vertical), when needs are placed the D.C. regulated power supply module, only pull bar 22 need be drawn to vertical gear, then the D.C. regulated power supply module is placed in intermediate plate 23, again pull bar 22 is drawn to horizontal gear, intermediate plate 23 just can be clamped the D.C. regulated power supply module, makes it not loosening.

Claims

1. an electronic devices and components test macro, is characterized in that: comprise power circuit, host computer, data acquisition module, signal conditioning circuit, front transformer, rear transformer, noisemaker, the adjustable input power of interchange, alternating current filter, D.C. regulated power supply module and power tunable load; Power circuit is respectively with data acquisition module, signal conditioning circuit, front transformer, rear transformer, alternating current filter and exchange adjustable input power and be connected and provide direct current or alternating current to them; Host computer is connected with data acquisition module, and signal conditioning circuit is connected with data acquisition module, front transformer, rear transformer, D.C. regulated power supply module respectively; Noisemaker is connected with alternating current filter; Front transformer, rear transformer also are connected with the front and back of alternating current filter respectively; Exchange adjustable input power and also connect respectively alternating current filter and D.C. regulated power supply module; The power tunable load is connected with the D.C. regulated power supply module.

2. electronic devices and components test macro according to claim 1, it is characterized in that: described alternating current filter fixture and the D.C. regulated power supply Modular jig of also comprising, described alternating current filter is placed on the alternating current filter fixture, and described D.C. regulated power supply module is placed on the D.C. regulated power supply Modular jig.

3. electronic devices and components test macro according to claim 1 is characterized in that: adopt between described host computer and data acquisition module that serial ports is connected, usb bus connects or the pci bus connection.

4. electronic devices and components test macro according to claim 1 is characterized in that: described data acquisition module has analog input AD, analog output DA, digital quantity input DI, digital output DO function.

5. electronic devices and components test macro according to claim 1, it is characterized in that: described power circuit provides 220V or 110V alternating voltage to exchanging adjustable input power, and provides 24V, 12V or 5V DC voltage to signal conditioning circuit, front transformer, rear transformer and alternating current filter respectively.

6. electronic devices and components test macro according to claim 1, is characterized in that: the man-made noise signal of described noisemaker generation frequency modulation, amplitude modulation.

7. electronic devices and components test macro according to claim 1, it is characterized in that: the adjustable input power of described interchange provides test voltage for alternating current filter, or provides the interval voltage changed of 90-250V for the D.C. regulated power supply module.

8. electronic devices and components test macro according to claim 1 is characterized in that: described power tunable load, by regulating load power, detects the voltage regulation result of D.C. regulated power supply module.