CN203287423U - Narrow-pulse magnetic field peak detection structure - Google Patents
Narrow-pulse magnetic field peak detection structure Download PDFInfo
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- CN203287423U CN203287423U CN2013202991851U CN201320299185U CN203287423U CN 203287423 U CN203287423 U CN 203287423U CN 2013202991851 U CN2013202991851 U CN 2013202991851U CN 201320299185 U CN201320299185 U CN 201320299185U CN 203287423 U CN203287423 U CN 203287423U
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Abstract
The utility model discloses a narrow-pulse magnetic field peak detection structure comprising a Hall element, a signal processing circuit, an analog signal output circuit, a current biasing circuit, a peak holding circuit, a resetting circuit, a zero setting circuit and a gain circuit. The single processing circuit provides a constant flow source for the Hall element; the Hall element induces electric signals through a magnetic field and feeds the electric signals back to the signal processing circuit with high input impedance; the signal processing circuit outputs two paths of signals; one path of signals is output to the analog signal output circuit or a digital display instrument for real-time display and the other path of signals is output to the peak holding circuit which captures the peak and extends the peak output time for guaranteeing accuracy of the peak signals. The detection structure is additionally provided with the current biasing circuit, the zero setting circuit and the gain circuit. The peak signals output by the structure can be maintained stably for a long time without attenuation, and the peak of the narrow pulse in a cycle of 0.001s can be measured accurately.
Description
Technical field
The utility model relates to the peak value of pulse detection field, especially relates to a kind of burst pulse magnetic field peak value detection architecture.
Background technology
In the burst pulse field tests, often to monitor crest voltage, electric current or the magnetic field of some high pressure, heavy current pulse signal, general test adopts the wider oscillograph of bandwidth ratio to coordinate high-voltage probe to measure now, need the people not stop to adjust oscillograph according to the test pulse amplitude during measurement, test loaded down with trivial details, poor stability, apparatus expensive, most of factories do not satisfy the requirements.
General magnetic field measuring apparatus only has low frequency, magnetic induction density peak value hold facility as 10Hz, and can't measure high-frequency, as the burst pulse magnetic induction density of 100KHz, and the cycle of the pulsed magnetic field of magnetizing coil often in 0.001S, general magnetic field measuring apparatus is difficult to measure, even measure, also there is very large error in its result, only has by high-end oscillograph and can the burst pulse that this cycle is very little catch and read in the waveform mode, and this kind detection method equipment cost is too high.
Usually, the basic circuit structure of peak general value detecting device mainly is comprised of sampling, holding circuit and voltage comparator circuit.The simplest peak detection circuit is that diode and electric capacity form charge-discharge circuit, utilizes the unidirectional general character of diode and the memory action of capacitor to form testing circuit, switching diode circuit as a comparison wherein, and capacitor storage is as holding circuit.The ultimate principle that peak value detects is: when the voltage of input signal increased, peak detection circuit was sampled, and makes output voltage can follow well input voltage; When input voltage started to reduce, circuit entered the maintenance stage, and crest voltage is this moment kept getting off and exports, and during again greater than this moment maintenance voltage, output voltage is followed the tracks of again input voltage and adopted when input voltage; Only have when reset signal arrives, output voltage just discharges and makes zero, and then starts again peak value and adopts next cycle that keeps.The switching diode of general peak detctor is more severe at the retardation ratio from the off-state to the on-state, the output overshoot that is associated of transition is relatively many therewith, too fast rising or the too fast phenomenon of falling can occur in the passing in time of peak value output signal, this kind phenomenon can cause again follow-up signal to be processed and deviation occur, makes the overall precision of peak detection circuit relatively low.
The utility model content
The defect that exists in order to solve prior art, but the utility model provides the burst pulse peak signal that a kind of Measurement accuracy cycle is 0.01S, can the long period keeps peak signal and guarantees peak signal undamped or burst pulse magnetic field peak value detection architecture of increasing in output procedure.
To achieve these goals, the technical solution adopted in the utility model is:
a kind of burst pulse magnetic field peak value detection architecture, described detection architecture comprises Hall element, signal processing circuit, analog signal output circuit, current biasing circuit, peak holding circuit, reset circuit, zeroing circuit and gain circuitry, described signal processing circuit provides constant current source to Hall element, Hall element generates electric signal by magnetic field and feeds back in the signal processing circuit of high input impedance, signal processing circuit is processed the electric signal of input and is exported two path signal, wherein a road electric signal outputs to the analog signal output circuit or digital display instrument shows in real time, another road electric signal outputs to peak holding circuit, described peak holding circuit and current biasing circuit, reset circuit, zeroing circuit and gain circuitry connect respectively, current biasing circuit and reset circuit are used for the peak signal of correction and compensated peak holding circuit, zeroing circuit and gain circuitry are used for the peak signal of final output is made correction of a final proof.
Further, described peak holding circuit comprises that one keeps electric capacity and operational amplifier, described maintenance electric capacity one end ground connection, one termination enters current biasing circuit, reset circuit and signal processing circuit, described maintenance electric capacity is used for peak signal is stored with form of electrical charges, and operational amplifier is used for the output peak signal.
Further, described current biasing circuit comprises a resistance and diode, is used for leakage current is suppressed, and makes peak value to keep for a long time, and described two path signal is the real-time voltage signal that is proportional to magnetic induction density.
The beneficial effects of the utility model are: this burst pulse magnetic field peak value detection architecture is by peak holding circuit and current biasing circuit, realized that the burst pulse peak value keeps output cheaply, extended the peak value output time of burst pulse, exactly the peak value of the burst pulse of ranging pulse cycle in 0.001S.
Description of drawings
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the peak signal oscillogram through revising and compensating;
Fig. 3 is the peak signal oscillogram of unmodified and compensation.
Embodiment
For making, architectural feature of the present utility model and the effect reached are had a better understanding and awareness, in order to preferred embodiment and accompanying drawing, coordinate detailed explanation, be described as follows:
As shown in Figure 1, a kind of burst pulse magnetic field peak value detection architecture, described detection architecture comprises Hall element 1, signal processing circuit 2, analog signal output circuit 3, current biasing circuit 4, peak holding circuit 5, reset circuit 6, zeroing circuit 7 and gain circuitry 8;
During enforcement, described peak holding circuit 5 comprises that one keeps electric capacity and operational amplifier, described maintenance electric capacity one end ground connection, one termination enters current biasing circuit 4, reset circuit 6 and signal processing circuit 2, described maintenance electric capacity is used for peak signal is stored with form of electrical charges, and operational amplifier is used for the output peak signal.Described current biasing circuit 4 comprises a resistance and diode, is used for leakage current is suppressed, and makes peak value to keep for a long time.
During enforcement, described signal processing circuit 2 provides constant current source to Hall element, Hall element generates electric signal by magnetic field and feeds back in the signal processing circuit of high input impedance, signal processing circuit 2 is processed the electric signal of input and exports two path signal, described two path signal is the real-time voltage signal that is proportional to magnetic induction density, wherein a road electric signal outputs to analog signal output circuit 3 or digital display instrument shows in real time, and another road electric signal outputs to peak holding circuit 5.
For the element in leakage current, electric capacity self discharge and the associated loop of the bias current that reduces related operation amplifier in circuit, pcb board produces and disturbs the peak signal of output, described peak holding circuit 5 is connected and is connected respectively with gain circuitry with current biasing circuit 4, reset circuit 6, zeroing circuit 7, current biasing circuit 4 and reset circuit 6 are used for the peak signal of correction and compensated peak holding circuit 5, and zeroing circuit 7 and gain circuitry 8 are used for the peak signal of final output is made correction of a final proof.
As shown in Figure 2, this waveform is that the peak signal in described peak holding circuit 5 is revised through current biasing circuit 4 and reset circuit 6 and compensation and through the oscillogram of operational amplifier output, and peak value has kept the state of straight line afterwards in output.
As shown in Figure 3, this waveform is the peak signal oscillogram that general pulse test circuit is exported, because of correction and the compensation without current biasing circuit 4, reset circuit 6, zeroing circuit 7 and gain circuitry 8, decay and growth sharply occurs in the peak signal of output at short notice very soon.
Know by contrast, adopted the utility model to detect the peak signal accuracy of exporting high, the state that can keep level after the operational amplifier output of peak signal by peak holding circuit, sharply decay or growth can not occur at short notice, realized that the burst pulse peak value keeps output, the peak value of the burst pulse of ranging pulse cycle in 0.001S exactly cheaply.
Above demonstration and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope; these changes and improvements all fall in claimed scope of the present utility model, and the protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (4)
1. a burst pulse magnetic field peak value detection architecture, is characterized in that, described detection architecture comprises Hall element, signal processing circuit, analog signal output circuit, current biasing circuit, peak holding circuit, reset circuit, zeroing circuit and gain circuitry, described signal processing circuit provides constant current source to Hall element, Hall element generates electric signal by magnetic field and feeds back in the signal processing circuit of high input impedance, signal processing circuit is processed the electric signal of input and is exported two path signal, wherein a road electric signal outputs to the analog signal output circuit or digital display instrument shows in real time, another road electric signal outputs to peak holding circuit, described peak holding circuit and current biasing circuit, reset circuit, zeroing circuit and gain circuitry connect respectively, current biasing circuit and reset circuit are used for the peak signal of correction and compensated peak holding circuit, zeroing circuit and gain circuitry are used for the peak signal of final output is made correction of a final proof.
2. a kind of burst pulse according to claim 1 magnetic field peak value detection architecture, it is characterized in that, described peak holding circuit comprises that one keeps electric capacity and operational amplifier, described maintenance electric capacity one end ground connection, one termination enters current biasing circuit, reset circuit and signal processing circuit, described maintenance electric capacity is used for peak signal is stored with form of electrical charges, and operational amplifier is used for the output peak signal.
3. a kind of burst pulse according to claim 1 magnetic field peak value detection architecture, is characterized in that, described current biasing circuit comprises a resistance and diode, is used for leakage current is suppressed, and makes peak value to keep for a long time.
4. a kind of burst pulse according to claim 1 magnetic field peak value detection architecture, is characterized in that, described two path signal is the real-time voltage signal that is proportional to magnetic induction density.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202991851U CN203287423U (en) | 2013-05-24 | 2013-05-24 | Narrow-pulse magnetic field peak detection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202991851U CN203287423U (en) | 2013-05-24 | 2013-05-24 | Narrow-pulse magnetic field peak detection structure |
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| CN203287423U true CN203287423U (en) | 2013-11-13 |
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| CN2013202991851U Expired - Lifetime CN203287423U (en) | 2013-05-24 | 2013-05-24 | Narrow-pulse magnetic field peak detection structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807123A (en) * | 2016-05-12 | 2016-07-27 | 核工业理化工程研究院 | Current collecting circuit of magnetizing power source |
| CN107257237A (en) * | 2017-06-26 | 2017-10-17 | 北方电子研究院安徽有限公司 | The controllable monolithic integrated narrow pulse peak holding circuit of sampling |
| CN107515327A (en) * | 2016-06-16 | 2017-12-26 | 上海华虹集成电路有限责任公司 | The blob detection circuit received for magnetizing mediums signal in ISO7811 agreements |
| CN107517072A (en) * | 2016-06-16 | 2017-12-26 | 上海华虹集成电路有限责任公司 | The decoding circuit received for magnetizing mediums signal in ISO7811 agreements |
| CN110007311A (en) * | 2019-03-19 | 2019-07-12 | 湖北三江航天万峰科技发展有限公司 | A kind of peak holding output system |
-
2013
- 2013-05-24 CN CN2013202991851U patent/CN203287423U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807123A (en) * | 2016-05-12 | 2016-07-27 | 核工业理化工程研究院 | Current collecting circuit of magnetizing power source |
| CN105807123B (en) * | 2016-05-12 | 2019-03-29 | 核工业理化工程研究院 | Magnetize the current collection circuit of power supply |
| CN107515327A (en) * | 2016-06-16 | 2017-12-26 | 上海华虹集成电路有限责任公司 | The blob detection circuit received for magnetizing mediums signal in ISO7811 agreements |
| CN107517072A (en) * | 2016-06-16 | 2017-12-26 | 上海华虹集成电路有限责任公司 | The decoding circuit received for magnetizing mediums signal in ISO7811 agreements |
| CN107515327B (en) * | 2016-06-16 | 2020-10-30 | 上海华虹集成电路有限责任公司 | Peak detection circuit for magnetic medium signal reception in ISO7811 protocol |
| CN107517072B (en) * | 2016-06-16 | 2021-07-23 | 上海华虹集成电路有限责任公司 | Decoding circuit for magnetic medium signal reception in ISO7811 protocol |
| CN107257237A (en) * | 2017-06-26 | 2017-10-17 | 北方电子研究院安徽有限公司 | The controllable monolithic integrated narrow pulse peak holding circuit of sampling |
| CN107257237B (en) * | 2017-06-26 | 2024-02-27 | 安徽北方微电子研究院集团有限公司 | Sampling-controllable monolithic integrated narrow pulse peak value holding circuit |
| CN110007311A (en) * | 2019-03-19 | 2019-07-12 | 湖北三江航天万峰科技发展有限公司 | A kind of peak holding output system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |
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| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: MAGNET LAB ELECTRONIC (SHENZHEN) CO.,LTD. Person in charge of patentsThe principal of patent Document name: Notice of Termination of Patent Rights |
|
| DD01 | Delivery of document by public notice |