CN202033430U

CN202033430U - Surge interfering signal generator

Info

Publication number: CN202033430U
Application number: CN2011200024474U
Authority: CN
Inventors: 潘卫明; 姚继能; 唐湘
Original assignee: ZHEJIANG RUIDE ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG RUIDE ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2011-01-06
Filing date: 2011-01-06
Publication date: 2011-11-09
Anticipated expiration: 2021-01-06

Abstract

The utility model relates to a surge interfering signal generator. A power supply circuit makes the 220V/50Hz power supply voltage become the direct current 12V after the steps of voltage reduction, rectification voltage, voltage stabilization, and filtering in order to give a power supply to a relay, and then leads out a VCC(+5V) power supply in order to give a power supply to the rest part of the circuit. A 164 shift register circuit combines a button scanning circuit so as to input a scanned circuit signal to an MCU control unit. An encoder circuit provides a control signal for the breaking and attracting of the relay. A 164 driving nixie tube circuit is provided with a nixie tube display. The MCU control unit adopts a Holtek one-chip microcomputer HT46R47 chip, and sends an order signal to control the breaking and attracting of the relay and the operation of a nixie tube display part circuit based on the signal of the encoder circuit and the signal of the button circuit. The surge interfering signal generator is small in volume, easy to carry, operate, and realize; and also enriches the test approaches to the performance test of a switching power supply facility, such as an induction cooker.

Description

A kind of surge undesired signal generator

Technical field:

The utility model relates to the electric test technical field, more specifically to a kind of surge undesired signal generator.

Background technology:

In recent years, products such as China's electromagnetic oven and switch power technology were used more and more general, and market demand is very big, and the large market impels More and more factories to produce this series products.Because the technology of different producers is uneven, the quality that causes this type of product on the market also is uneven.And this kind equipment to the requirement of power supply generally all than higher, under the environment of thunderbolt, damage the quality problems of this series products of complaint that has many consumers easily.

At present, the equipment that is used for the lightning surge test on the market all is very expensive main equipment, and volume is big, is not suitable for carrying.

The utility model content:

The purpose of this utility model is exactly the deficiency at prior art, and a kind of surge undesired signal generator is provided.Its volume is little, carries the aspect, and is simple to operate, easily realizes; Make the more means of testing of test of belt switch power supply kind equipment such as electromagnetic oven performance.

Technology solution of the present utility model is as follows:

A kind of surge undesired signal generator, comprise power circuit, MCU control module, power circuit is exported direct current 12V with the 220V/50Hz supply voltage and is powered to relay after step-down, rectification, voltage stabilizing, filtering link, (+5V) power supply is given the power supply of circuit other parts to draw VCC from 12V again;

164 shift-register circuits input to the MCU control module in conjunction with key scanning circuit with the circuit signal that scans, and encoder circuit provides the control signal of relay disconnection and adhesive, and 164 shift registers drive the charactron circuit and have the charactron demonstration;

The MCU control module adopts and to close safe single-chip microcomputer HT46R47 chip, and the MCU control module sends the adhesive of command signal pilot relay and disconnection, charactron display part circuit working according to the signal of the signal of encoder circuit and key circuit.

Described surge interference signal amplitude is adjustable to be to choose different relay conductings and end by the MCU command signal.

The frequency of described generation high voltage surge spike is adjustable, and frequency is controlled by the scrambler anglec of rotation.The beneficial effects of the utility model are:

1, energized, press power key (KEY8), press (KEY6) again, system works is at the state of the undesired signal amplitude maximum that is produced, the client can select corresponding surge pulse signal to the sensitivity of change in voltage according to current device, and this surge undesired signal generator can produce 12 kinds of different noise amplitudes altogether.

2, this surging signal generator has the adjustable function of the high voltage surge signal frequency of generation, and scrambler produces pulse input signal to MCU, and the frequency to testing of equipment is regulated in pilot relay adhesive and disconnection.

3, the small and exquisite and cheap portable set of the utility model, be suitable for producer's self-control or batch process, the transient high voltage spike that produces when the surging signal generator that relates to can be simulated thunderbolt, thereby make the more means of testing of producer, help producer and develop the stronger product of resistivity that lightning surge is disturbed.

Description of drawings:

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

Fig. 2 is the circuit diagram of power circuit

Fig. 3 is the circuit diagram that closes safe single-chip microcomputer HT46R47 control module part

Fig. 4 is relay strobe pulse output circuit figure

Fig. 5 is shift register control module partial circuit figure

Fig. 6 is the circuit diagram of encoder circuit

Fig. 7 is the circuit diagram that 164 shift registers drive charactron demonstration and key scanning circuit

Embodiment:

Embodiment: seeing shown in Fig. 1 to 7 that accompanying drawing 1 is this overall product theory diagram, also is the core concept of this product design;

Fig. 2 is the power unit circuit diagram, mainly comprises input line filter, input rectifying wave filter, output rectifier filer.Their function is:

1, input line filter: eliminate from electrical network, the interference as the switch of the startup of motor, electrical equipment, thunderbolt etc. produce also prevents that the high frequency noise that Switching Power Supply produces from spreading to electrical network simultaneously.

2, input rectifying wave filter: the electrical network input voltage is carried out rectifying and wave-filtering, for transducer provides DC voltage.

3, output rectifier filer: the high-frequency ac voltage rectifying and wave-filtering of transducer output is obtained the DC voltage that needs, also prevent the interference of high frequency noise simultaneously to load.

In this power supply, the 220V/50Hz supply voltage inserts inserted sheet L, N, and output direct current 12V powers to relay after step-down, rectification, voltage stabilizing, filtering link, and (+5V) power supply gives circuit other parts power supplies to draw VCC from 12V again.

See shown in Figure 3ly, this part adopts closes safe single-chip microcomputer HT46R47 chip, and this chip is a 8 multifunctional universal microcontrollers, and it is a timing, PWM, the ideal selection of multi-channel A/applications such as D conversion.

See Fig. 4, this is a kind of very typical load control circuit, produces signal by the scanning button, and through the attracting state of MCU control corresponding relays, this circuit is because of there being five relays, so 12 kinds of undesired signals that amplitude is different can be provided altogether; Encoder circuit produce pulse signal through MCU can automatic control relay adhesive and disconnection, the frequency of regulating checkout equipment.

See shown in Figure 5,164 shift register control circuits, the function that this circuit is mainly realized is: the transmission data, detect button and light charactron.

Fig. 6 is the scrambler control circuit, and its function is that button combines with scrambler, along (contrary) hour hands rotary encoder, produces pulse signal by inside and passes to MCU, and pilot relay disconnects the frequency with adhesive.

Fig. 7 be 164 shift registers drive the circuit diagram of charactron circuit and key scanning circuit, the MCU control section adopts and closes safe HT46R47 single-chip microcomputer, add 164 shift register chip for driving, by 8 buttons of 164 scannings, be respectively power key, five relay controls button, maximal value key and scrambler operating keys.Group of four figures pipe data presented is respectively: front two is the time of relay adhesive, and back two is the time that relay disconnects.

Claims

1. surge undesired signal generator, comprise power circuit, MCU control module, it is characterized in that: power circuit is exported direct current 12V with the 220V/50Hz supply voltage and is powered to relay after step-down, rectification, voltage stabilizing, filtering link, (+5V) power supply is given the power supply of circuit other parts to draw VCC from 12V again;

2. a kind of surge undesired signal generator according to claim 1 is characterized in that: described surge interference signal amplitude is adjustable to be to choose different relay conductings and end by the MCU command signal.

3. a kind of surge undesired signal generator according to claim 1 is characterized in that: the frequency that produces the high voltage surge spike is adjustable, and frequency is controlled by the scrambler anglec of rotation.