CN201984091U - High-frequency noise simulator - Google Patents
High-frequency noise simulator Download PDFInfo
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- CN201984091U CN201984091U CN2011200075565U CN201120007556U CN201984091U CN 201984091 U CN201984091 U CN 201984091U CN 2011200075565 U CN2011200075565 U CN 2011200075565U CN 201120007556 U CN201120007556 U CN 201120007556U CN 201984091 U CN201984091 U CN 201984091U
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- frequency noise
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- power supply
- noise simulator
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Abstract
The utility model discloses a high-frequency noise simulator, which comprises a control plate, a linear power supply, a high-voltage power supply, a waveform generation return circuit, a button plate and an LCD, wherein the output of the waveform generation return circuit is connected with a coupling/decoupling network; a 50 omega matched impedance and a phase detection circuit are internally arranged in the coupling/decoupling network; and a coaxial short circuit terminal is externally arranged. In the high-frequency noise simulator provided by the utility model, the output of the waveform generation return circuit is connected with the coupling/decoupling network, the 50 omega matched impedance and the phase detection circuit are internally arranged in the coupling/decoupling network; and the coaxial short circuit terminal is externally arranged, so that the simulator can effectively eliminate the circuit distribution parameter, and output the waveforms smoothly.
Description
Technical field
The utility model relates to a kind of optical, mechanical and electronic integration detecting instrument, relates in particular to a kind of high frequency noise simulator.
Background technology
The high frequency noise simulator is the precipitous pulse that is produced when cut-offfing inductive load by simulation, checks that electronic product may be to the influence of work generation when standing this type of interference, and its technical parameter preferably meets the relevant regulations of Japanese NECA TR-28 standard.
In present existing high frequency noise simulator product, have the following disadvantages: 1) the domestic and international not built-in 50 Ω build-out resistors of product of part, for user trial increases trouble; 2) generator that has with coaxial cable output, only is not power lead output, and is very big to waveform influence.Therefore be necessary existing high frequency noise simulator is improved, eliminate the circuit distribution parameter, level and smooth output waveform.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of high frequency noise simulator, eliminates the circuit distribution parameter, level and smooth output waveform.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to provide a kind of high frequency noise simulator, comprise that loop, keypad and demonstration liquid crystal take place for control panel, linear power supply, high-voltage power supply, waveform, wherein, the output that the loop takes place described waveform links to each other with the coupling decoupling network, built-in 50 Ω matched impedance and the phase detecting circuits of described coupling decoupling network, external coaxial short circuit terminal.
Above-mentioned high frequency noise simulator, wherein, described high-voltage power supply output amplitude ± 10V～± DC voltage of 4000V.
Above-mentioned high frequency noise simulator, wherein, the pulsewidth that output square wave in loop takes place described waveform is 50～1000ns.
The utility model contrast prior art has following beneficial effect: the high frequency noise simulator that the utility model provides, link to each other with the coupling decoupling network by the output that waveform is taken place in the loop, built-in 50 Ω matched impedance and the phase detecting circuits of described coupling decoupling network, external coaxial short circuit terminal, effectively eliminate the circuit distribution parameter, level and smooth output waveform.
Description of drawings
Fig. 1 is the utility model high frequency noise simulator structural representation;
Fig. 2 is the utility model high frequency noise simulator high-voltage power supply low pressure identification circuit;
Fig. 3 is the utility model high frequency noise simulator waveform generation circuit theory figure.
Among the figure:
1 control panel, 2 Switching Power Supplies, 3 high-voltage power supplies
Loop 5 keypads 6 take place and show liquid crystal in 4 waveforms
7 coupling decoupling networks
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 1 is the utility model high frequency noise simulator structural representation.
See also Fig. 1, the high frequency noise simulator that the utility model provides comprises that control panel 1, linear power supply 2, high-voltage power supply 3, waveform loop 4, keypad 5 take place and show liquid crystal 6, wherein, the output that loop 4 takes place described waveform links to each other with coupling decoupling network 7, described coupling decoupling network 7 built-in 50 Ω matched impedance and phase detecting circuits, external coaxial short circuit terminal.
Then each main circuit is partly done further to launch to describe below:
(1) control panel
Control panel of the present utility model is core with the single-chip microcomputer, mainly is made up of pulsed frequency drive signal generation circuit, high-voltage power voltage initialization circuit, user profile memory circuit, outside relay drive circuit and keypad signal circuit.
The principle of pulsed frequency drive signal generation circuit is the pulse signal process phase shift that produces corresponding frequencies by single-chip microcomputer, by the width of monostable circuit regulating impulse, satisfies the needs that drive again, is connected to the mercury cut-off driving circuit at last.
The principle of high-voltage power voltage initialization circuit is 14 bit string mouth data to be set to the DA chip by single-chip microcomputer, produces certain analog voltage amount (0V～5V), be used to control the output voltage amplitude of high-voltage power supply.
The principle of user profile memory circuit is by single-chip microcomputer the waveform generation status information that the user of relevant work pattern determines to be stored in the data storing chip, so that transfer corresponding waveform generation state smoothly when working mode change.
The principle of outside relay drive circuit is the single-chip microcomputer transmission signals, by light-coupled isolation, amplify the adhesive of the corresponding relay of control or open through triode, and in software the adhesive sequential of pilot relay, a large amount of interference of avoiding adhesive simultaneously to bring.
The principle of the signal circuit of keypad is that single-chip microcomputer carries out the transmission of panel leds signal and button sampled signal by impact damper, can reduce signal circuit, strengthens antijamming capability.
Power input at control panel adopts π type filtering circuit, purifies direct supplys such as 5V power supply.The Vcc of each chip on control panel end, the patch capacitor that all pass through a 100nF is ground connection nearby, the signal circuit minimum of assurance chip.
(2) Switching Power Supply
Switching Power Supply is to control panel and high-voltage power supply power supply.Adopt Switching Power Supply to improve voltage transitions efficient, at mains fluctuation ± 10% o'clock, output voltage can remain unchanged.
(3) high-voltage power supply
Adopt the self-control high-voltage power supply.Its input voltage 24V, maximum output 4000V positive-negative polarity voltage, 0～5V control, the stabilized voltage supply of power 200W.And adopt the high pressure ground wire to isolate.
The high-voltage power supply output voltage is better with the linearity of control voltage, and temperature is floated very little.Built-in high-low pressure identification circuit switches the voltage that connects the elementary OUTPUT end of high-tension transformer by Single-chip Controlling K1 as shown in Figure 2, thereby can export the burning voltage of minimum 10V.
(4) loop takes place in waveform
The loop takes place waveform can pass through the manual shift mode, and the generation pulsewidth is 50～1000ns(50ns stepping) square wave.Its schematic diagram as shown in Figure 3, high-voltage power supply is charged to storage capacitor C1 by resistance R 1, C1 passes through resistance R 2 to time-delay cable line1(50 ohm characteristic impedance concentric cable) charging, R3 is 50 Ω build-out resistors, when mercury cut-off K1 is closed, the OUT end will be exported high-frequency impulse, and waveforms amplitude is 1/2 capacitor C, 1 voltage, width equals electromagnetic wave transmits time-delay on cable line1 twice, can produce the waveform that pulsewidth is 50 ~ 1000ns by the length of changing line1.
(5) keypad
Keypad is made up of the transmission circuit of panel leds signal and button, scrambler sampled signal.The key encoder signal circuit is made up of the RC filtering circuit, strengthens interference free performance.
(6) show liquid crystal
The liquid crystal drive functional circuit directly produces liquid crystal driving signal by control panel.
(7) coupling decoupling network
Make things convenient for user's handover network by external coaxial short circuit head.Built-in 50 Ω matched impedances, individual event three-way (L, N, PE) coupling output.Built-in phase detecting circuit can be 0 °～360 ° phase place output waveforms.
In sum, the high frequency noise simulator that the utility model provides has following advantage: 1) use the coupling decoupling network, eliminate the circuit distribution parameter, make the smooth no burr of output waveform; 2) realize 50 Ohmages coupling, concentric cable output; 3) use high pressure ground wire isolation method, increase the differential mode test of phase line and phase line; 4) the single-phase three-wire AC 240V coupling/decoupling network of the big electric current of structure 20A; 5) adopt single-chip microcomputer liquid crystal display intelligence operation, the interference that processing may occur prevents the digital circuit misoperation that the edge triggers.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.
Claims (3)
1. high frequency noise simulator, comprise that control panel (1), linear power supply (2), high-voltage power supply (3), waveform loop (4), keypad (5) take place and show liquid crystal (6), it is characterized in that, the output that loop (4) takes place described waveform links to each other with coupling decoupling network (7), built-in 50 Ω matched impedance and the phase detecting circuits of described coupling decoupling network (7), external coaxial short circuit terminal.
2. high frequency noise simulator as claimed in claim 1 is characterized in that, described high-voltage power supply (3) output amplitude ± 10V～± DC voltage of 4000V.
3. high frequency noise simulator as claimed in claim 1 is characterized in that, the pulsewidth that output square wave in loop (4) takes place described waveform is 50～1000ns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200075565U CN201984091U (en) | 2011-01-12 | 2011-01-12 | High-frequency noise simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200075565U CN201984091U (en) | 2011-01-12 | 2011-01-12 | High-frequency noise simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201984091U true CN201984091U (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200075565U Expired - Lifetime CN201984091U (en) | 2011-01-12 | 2011-01-12 | High-frequency noise simulator |
Country Status (1)
| Country | Link |
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| CN (1) | CN201984091U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608369A (en) * | 2012-04-09 | 2012-07-25 | 上海三基电子工业有限公司 | Touch-control and intelligent type pulse train and lightning stroke surge generator |
| CN103618520A (en) * | 2013-12-03 | 2014-03-05 | 上海三基电子工业有限公司 | High-voltage fast-rising pulse generator and pulse generation method |
| CN104079266B (en) * | 2013-03-26 | 2016-12-28 | 紫光国芯股份有限公司 | A kind of simulation higher power function generating circuit for crystal oscillator temperature-compensating |
| CN108233873A (en) * | 2016-12-22 | 2018-06-29 | 上海普锐马电子有限公司 | A kind of multi-channel noise simulation generator |
| CN108572285A (en) * | 2018-03-26 | 2018-09-25 | 北京航空航天大学 | A kind of high speed photo coupling screening technique based on low-frequency broadband noise |
-
2011
- 2011-01-12 CN CN2011200075565U patent/CN201984091U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608369A (en) * | 2012-04-09 | 2012-07-25 | 上海三基电子工业有限公司 | Touch-control and intelligent type pulse train and lightning stroke surge generator |
| CN102608369B (en) * | 2012-04-09 | 2014-12-03 | 上海三基电子工业有限公司 | Touch-control and intelligent type pulse train and lightning stroke surge generator |
| CN104079266B (en) * | 2013-03-26 | 2016-12-28 | 紫光国芯股份有限公司 | A kind of simulation higher power function generating circuit for crystal oscillator temperature-compensating |
| CN103618520A (en) * | 2013-12-03 | 2014-03-05 | 上海三基电子工业有限公司 | High-voltage fast-rising pulse generator and pulse generation method |
| CN103618520B (en) * | 2013-12-03 | 2016-09-21 | 上海三基电子工业有限公司 | High pressure fast-rising pulse generator and pulse generation and method |
| CN108233873A (en) * | 2016-12-22 | 2018-06-29 | 上海普锐马电子有限公司 | A kind of multi-channel noise simulation generator |
| CN108572285A (en) * | 2018-03-26 | 2018-09-25 | 北京航空航天大学 | A kind of high speed photo coupling screening technique based on low-frequency broadband noise |
| CN108572285B (en) * | 2018-03-26 | 2019-12-31 | 北京航空航天大学 | High-speed optocoupler screening method based on low-frequency broadband noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |