CN103618520A - High-voltage fast-rising pulse generator and pulse generation method - Google Patents
High-voltage fast-rising pulse generator and pulse generation method Download PDFInfo
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- CN103618520A CN103618520A CN201310642058.1A CN201310642058A CN103618520A CN 103618520 A CN103618520 A CN 103618520A CN 201310642058 A CN201310642058 A CN 201310642058A CN 103618520 A CN103618520 A CN 103618520A
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Abstract
The invention provides a high-voltage fast-rising pulse generator. The high-voltage fast-rising pulse generator comprises a control unit, a high voltage power supply and a pulse forming circuit, wherein the high voltage power supply is controlled by a control circuit to supply a working voltage to the pulse forming circuit. The high-voltage fast-rising pulse generator is characterized in that the pulse forming circuit comprises a high-voltage capacitor, and a current-limiting resistor is sequentially connected with a delay cable, a switch and a load in series and is then connected to the two ends of the high-voltage capacitor in series, wherein the characteristic impedance of the delay cable is R1, the load is an internally-connected load or an externally-connected load, the matching impedance of the load is R2 which is equal to R1, and the impedance of the current-limiting resistor is much larger than the characteristic impedance R1 of the delay cable. According to the technical scheme, the invention further provides a rectangular pulse generation method adopting the pulse generator. Rectangular waves generated through the high-voltage fast-rise pulse generator and the rectangular pulse generation method can achieve detection of the performance of a probe, and technical parameters and the performance of the probe can be analyzed so as to provide an ideal signal source for the probe or an attenuator or other detection tools.
Description
Technical field
The squarer and the method that the present invention relates to a kind of forward position very fast (picosecond), voltage higher (4kv), energy continuous trigger, belong to electronic technology, electromagnetic compatibility technology.
Background technology
Probe, attenuator are widely used in electronic technology and electromagnetic compatibility technology, be the electronic unit that connects circuit-under-test and oscilloscope input, so whether measured signal accurately have great relation with probe; Probe often popped one's head in self bandwidth, frequency and attenuation coefficient and affect, and distortion or inaccurate waveform have great impact to researching and analysing waveform, therefore even bring very large loss, suitable, the accurate probe of conversion of bandwidth is very important.
When measuring circuit-under-test, we have often ignored the impact of probe on actual waveform.Yet in actual applications,, especially, in high-frequency circuit, inappropriate probe tends to make output waveform to distort; In EMC, standard has strict requirement to the forward position pulsewidth of output waveform especially, and therefore suitable probe accurately and oscilloscope are even more important.
Summary of the invention
The technical problem to be solved in the present invention provides a desirable signal source to probe, attenuator or other testing tools.
In order to solve the problems of the technologies described above, technical scheme of the present invention has been to provide a kind of high pressure soon along pulse generator, comprise control unit, high voltage source and pulse shaping loop, control circuit is controlled high voltage source and is provided operating voltage to pulse shaping loop, it is characterized in that: pulse shaping loop comprises high-voltage capacitance, current-limiting resistance is connected in series the time delay cable that characteristic impedance is R1 successively, after switch and load, be serially connected in the two ends of high-voltage capacitance, load or be in connect load or for external load, its matched impedance is R2, R2=R1, the impedance of current-limiting resistance is far longer than the characteristic impedance R1 of time delay cable.
Preferably, by Switching Power Supply, provide operating voltage for described high voltage source and described control circuit.
Preferably, described control unit comprises single-chip microcomputer, and single-chip microcomputer connects respectively the given unit of liquid crystal display, key operation unit, relay action unit and DA, wherein:
Relay action unit comprises optical coupling isolation circuit and Darlington transistor circuit, and output pin is controlled by optical coupling isolation circuit and the Darlington transistor circuit rear drive actuating of relay of serial connection in each road of single-chip microcomputer;
The serial signal output of single-chip microcomputer connects the given unit of DA, and the output of the given unit of DA produces certain analog voltage amount to high voltage source via operation amplifier unit.
Another technical scheme of the present invention has been to provide a kind of rectangular pulse method for generation that adopts above-mentioned pulse generator, it is characterized in that, step is: by control circuit, control high voltage source to high-voltage capacitor charging, after charging, on the time delay cable that the output high pressure of high voltage source is R1 to characteristic impedance after current-limiting resistance, therefore also formed the high pressure that value is U0 on the distributed capacitance of time delay cable, when switch is closed, because the matched impedance of load is identical with the characteristic impedance of time delay cable, therefore in the moment of switch closure, what in load, obtain is that amplitude is the high pressure of 1/2U0, because the adhesive of switch causes the impedance in loop to be undergone mutation, remainder amplitude is that the high pressure of 1/2U0 will reflect to high voltage source direction through time delay cable, when reflexing to current-limiting resistance, the characteristic impedance being far longer than due to the impedance of this current-limiting resistance, cause the reflection for the second time of waveform, substantially be open circuit reflection, the waveform of reflection is anti-phase, and reflect to load direction with the amplitude of-1/2U0, when arriving load, being just in time 1/2U0 with original amplitude, high pressure phase is offset, so formed a high pressure that amplitude is 1/2U0 in load, width is that electromagnetic wave is uploaded the rectangle arteries and veins of the time of passing 2 times at time delay cable.
The rectangle wave energy that the present invention produces realizes the detection to probe performance, for a desirable signal source being provided to probe, attenuator or other testing tools, can analyze technical parameter and the performance of probe.
Accompanying drawing explanation
Fig. 1 is that a kind of high pressure provided by the invention is soon along the circuit block diagram of pulse generator;
Fig. 2 is relay action unit circuit diagram;
Fig. 3 is the given element circuit figure of DA;
Fig. 4 is pulse shaping loop circuit figure.
Embodiment
For the present invention is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
As shown in Figure 1, a kind of high pressure provided by the invention is soon along pulse generator, comprise control unit, high voltage source and pulse shaping loop, control circuit is controlled high voltage source and is provided operating voltage to pulse shaping loop, by Switching Power Supply, provides operating voltage for described high voltage source and described control circuit.Then each main circuit is partly done further to launch to describe below:
Control circuit:
Control circuit of the present invention is that to take the control unit that single-chip microcomputer SM89516A forms be the parts such as core and peripheral circuit thereof, control unit major control liquid crystal display, key operation unit, relay action unit and the given unit of DA.
Liquid crystal display is the instruction and data information different according to single-chip microcomputer, produces development liquid crystal driving signal, controls the Presentation Function of liquid crystal panel in liquid crystal display.Liquid crystal display adopts T6963C to drive the liquid crystal panel of chip and 240 * 128 dot matrix.
As shown in Figure 2, in relay action unit, single-chip microcomputer SM89516A, through 8255 Extended Capabilities Port, then passes through optical coupling isolation circuit, the impulsive disturbance that prevents relay adhesive from disconnecting and bring, amplifies rear drive relay finally by the Darlington transistor of crossing in chip ULN2003.
As shown in Figure 3, in the given unit of DA, single-chip microcomputer SM89516A is to 12 Bits Serial signals of chip MAX531XINPIAN, then the output of chip MAX531XINPIAN is through being comprised of behind operation amplifier unit operational amplifier and associated components, after a voltage follower circuit being formed by operational amplifier, produce certain analog voltage amount to high voltage source again, for controlling the High voltage output of high voltage source.
Pulse shaping circuit:
Pulse shaping circuit be by Cable delay form square wave last or directly connect after output 50 ohm attenuator or in export after connecing the load of 50 ohm.The second situation is applicable to general probe or the attenuator of high input impedance.Its physical circuit as shown in Figure 4, comprise high-voltage capacitance C, current-limiting resistance R is connected in series the two ends that are serially connected in high-voltage capacitance C after time delay cable 1, K switch and the load that characteristic impedance is R1 successively, load or be in connect load or for external load, its matched impedance is R2, R2=R1=50 ohm, the impedance of current-limiting resistance R is the characteristic impedance R1 that 200K ohm is far longer than time delay cable 1.In the present embodiment, K switch is selected mercoid switch.
By control circuit, controlling high voltage source charges to high-voltage capacitance C, after charging, on the time delay cable 1 that the output high pressure of high voltage source is R1 to characteristic impedance after current-limiting resistance R, therefore also formed the high pressure that value is U0 on the distributed capacitance of time delay cable 1, when K switch is closed, because the matched impedance of load is identical with the characteristic impedance of time delay cable 1, therefore in the moment of K switch closure, what in load, obtain is that amplitude is the high pressure of 1/2U0, because the adhesive of K switch causes the impedance in loop to be undergone mutation, remainder amplitude is that the high pressure of 1/2U0 will reflect to high voltage source direction through time delay cable 1, when reflexing to current-limiting resistance R, the characteristic impedance being far longer than due to the impedance of this current-limiting resistance R, cause the reflection for the second time of waveform, substantially be open circuit reflection, the waveform of reflection is anti-phase, and reflect to load direction with the amplitude of-1/2U0, when arriving load, being just in time 1/2U0 with original amplitude, high pressure phase is offset, so formed a high pressure that amplitude is 1/2U0 in load, width is that electromagnetic wave is uploaded the rectangle arteries and veins of the time of passing 2 times at time delay cable.
Although content of the present invention discloses as above with preferred embodiments, any those skilled in the art, without departing from the spirit and scope of the present invention, when doing a little modification and perfect, so protection scope of the present invention is worked as with being as the criterion that claims were defined.
Claims (4)
1. a high pressure is soon along pulse generator, comprise control unit, high voltage source and pulse shaping loop, control circuit is controlled high voltage source and is provided operating voltage to pulse shaping loop, it is characterized in that: pulse shaping loop comprises high-voltage capacitance (C), current-limiting resistance (R) is connected in series the two ends that are serially connected in high-voltage capacitance (C) after time delay cable (1), switch (K) and the load that characteristic impedance is R1 successively, load or be in connect load or for external load, its matched impedance is R2, R2=R1, the impedance of current-limiting resistance (R) is far longer than the characteristic impedance R1 of time delay cable (1).
2. a kind of high pressure as claimed in claim 1, soon along pulse generator, is characterized in that: by Switching Power Supply, provide operating voltage for described high voltage source and described control circuit.
3. a kind of high pressure as claimed in claim 1, soon along pulse generator, is characterized in that: described control unit comprises single-chip microcomputer, and single-chip microcomputer connects respectively the given unit of liquid crystal display, key operation unit, relay action unit and DA, wherein:
Relay action unit comprises optical coupling isolation circuit and Darlington transistor circuit, and output pin is controlled by optical coupling isolation circuit and the Darlington transistor circuit rear drive actuating of relay of serial connection in each road of single-chip microcomputer;
The serial signal output of single-chip microcomputer connects the given unit of DA, and the output of the given unit of DA produces certain analog voltage amount to high voltage source via operation amplifier unit.
4. one kind adopts the rectangular pulse method for generation of pulse generator as claimed in claim 1, it is characterized in that, step is: by control circuit, control high voltage source and charge to high-voltage capacitance (C), after charging, on the time delay cable (1) that the output high pressure of high voltage source is R1 to characteristic impedance after current-limiting resistance (R), therefore also formed the high pressure that value is U0 on the distributed capacitance of time delay cable (1), when switch (K) is closed, because the matched impedance of load is identical with the characteristic impedance of time delay cable (1), therefore in the moment of switch (K) closure, what in load, obtain is that amplitude is the high pressure of 1/2U0, because the adhesive of switch (K) causes the impedance in loop to be undergone mutation, remainder amplitude is that the high pressure of 1/2U0 will reflect to high voltage source direction through time delay cable (1), when reflexing to current-limiting resistance (R), the characteristic impedance being far longer than due to the impedance of this current-limiting resistance (R), cause the reflection for the second time of waveform, substantially be open circuit reflection, the waveform of reflection is anti-phase, and reflect to load direction with the amplitude of-1/2U0, when arriving load, being just in time 1/2U0 with original amplitude, high pressure phase is offset, so formed a high pressure that amplitude is 1/2U0 in load, width is that electromagnetic wave is uploaded the rectangle arteries and veins of the time of passing 2 times at time delay cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310642058.1A CN103618520B (en) | 2013-12-03 | 2013-12-03 | High pressure fast-rising pulse generator and pulse generation and method |
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| CN201310642058.1A CN103618520B (en) | 2013-12-03 | 2013-12-03 | High pressure fast-rising pulse generator and pulse generation and method |
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| CN103618520B CN103618520B (en) | 2016-09-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093734A (en) * | 2016-08-02 | 2016-11-09 | 上海三基电子工业有限公司 | Partial discharge pulse based on GIS signal detection generator and method thereof |
| CN107797085A (en) * | 2016-08-31 | 2018-03-13 | 北京普源精电科技有限公司 | Soon along signal control circuit and its Active Front End, test system |
| CN111416543A (en) * | 2020-03-13 | 2020-07-14 | 华中科技大学 | Square wave pulse power supply for positioning cable intermediate joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7240248B2 (en) * | 2003-11-10 | 2007-07-03 | Dell Products L.P. | Apparatus and method for reducing false triggering of a signal due to an electrostatic discharge event |
| CN201984091U (en) * | 2011-01-12 | 2011-09-21 | 上海三基电子工业有限公司 | High-frequency noise simulator |
| CN201985826U (en) * | 2011-01-12 | 2011-09-21 | 上海三基电子工业有限公司 | Intelligent grouped pulse generator |
| 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 |
-
2013
- 2013-12-03 CN CN201310642058.1A patent/CN103618520B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7240248B2 (en) * | 2003-11-10 | 2007-07-03 | Dell Products L.P. | Apparatus and method for reducing false triggering of a signal due to an electrostatic discharge event |
| CN201984091U (en) * | 2011-01-12 | 2011-09-21 | 上海三基电子工业有限公司 | High-frequency noise simulator |
| CN201985826U (en) * | 2011-01-12 | 2011-09-21 | 上海三基电子工业有限公司 | Intelligent grouped pulse generator |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 钱振宇: "高频噪声模拟器及其应用", 《安全与电磁兼容》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093734A (en) * | 2016-08-02 | 2016-11-09 | 上海三基电子工业有限公司 | Partial discharge pulse based on GIS signal detection generator and method thereof |
| CN107797085A (en) * | 2016-08-31 | 2018-03-13 | 北京普源精电科技有限公司 | Soon along signal control circuit and its Active Front End, test system |
| CN111416543A (en) * | 2020-03-13 | 2020-07-14 | 华中科技大学 | Square wave pulse power supply for positioning cable intermediate joint |
| CN111416543B (en) * | 2020-03-13 | 2021-11-19 | 华中科技大学 | Square wave pulse power supply for positioning cable intermediate joint |
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| Publication number | Publication date |
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| CN103618520B (en) | 2016-09-21 |
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