CN109617012A - A kind of interaction region special magnet coil protector and electronic collision machine - Google Patents
A kind of interaction region special magnet coil protector and electronic collision machine Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
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Abstract
The present invention relates to a kind of interaction region special magnet coil protector and electronic collision machines, wherein coil protector includes voltage collector, analog signal processing module and digital signal processing module；Voltage collector is connect with each coil of collider magnet, for acquiring coil voltage value；The analog signal processing module is used to carry out the voltage value signal isolation and primary filtering；Digital signal processing module is used to be compared to after primary filtered voltage value carries out analog-to-digital conversion, secondary filtering and normalized with the excess temperature judgment threshold of setting, judges that excess temperature failure carries out overheat protector.The present invention avoids false alarm caused by interference signal by digital filtering；By the way that multiple coils are normalized; it is compared by the threshold value with setting, finds temperaturing lifting abnormality, power-off signal can be provided when coil temperature rises to 75 DEG C; electric current is exported in 0.02 second internal cutting off magnet power supply, accelerator magnet coil is effectively realized and is reliably timely protected.
Description
Technical field
The present invention relates to collider technical field, especially a kind of interaction region special magnet coil protector and electronics pair
It collides.
Background technique
As shown in Figure 1, electron-positron collider (BEPCII) interaction region special magnet is respectively Q1a, Q1b (cutting-type four
Pole magnet) and ISPB magnet (cutting-type second level magnet), it is limited since magnet installs and designs condition, the current density of coil is up to
50A/mm2 is ten times of normal coil.Special magnet coil is copper conductor, has the characteristics that positive temperature coefficient, is powered to magnet
For D.C. high-current power supply, when logical operating current, coil-conductor generates heat, and resistance value can be increased accordingly, and the coil of every block of magnet is all used
Cooling water channel parallel connection is cooling.If open circuit or obstruction occurs in cooling water channel when magnet winding leads to operating current, winding will be fast
Speed is generated heat and is burnt, and not only pays expensive equipment and remakes expense but also will cause collider stopping for beam, when wasting collider.
For the overheat protector of magnet coil, usually there are two types of modes for domestic accelerator, and one is use temperature detect switch (TDS) temperature
Controller KSD301,302 are spent, by PLC collect contacts signal serial scan, one is the temperature sensors of pt100 temperature
Variation is converted to resistance value, then signal is transmitted to Computer Control Unit by lead, either which kind of mode, when responding
Between will be more than 3s, the index of interaction region special iron temperature protection 20ms can not be able to satisfy.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of interaction region special magnet coil protector and electronics head-on collision
Machine, detection and judge collider special type coil temperature whether overtemperature, and realization quickly and effectively protect.
The purpose of the present invention is mainly achieved through the following technical solutions:
A kind of interaction region special magnet coil over-temperature protection device, including, voltage collector, analog signal processing module and
Digital signal processing module；
The voltage collector is connect with each coil of collider magnet, for acquiring each road coil voltage value of collider magnet
ULine i, i=1, N, N are the number of magnet coil；
The analog signal processing module is connect with the voltage collector, for the voltage value ULine iCarry out signal
Isolation and primary filtering；
The digital signal processing module is connect with analog signal processing module, for by primary filtered each line
After enclosing voltage value progress analog-to-digital conversion, secondary filtering and normalized, normalization digital voltage value U is obtainedReturn i, and will be described
Digital voltage value UReturn iIt is compared with the excess temperature judgment threshold of setting, judges excess temperature failure, output control signal disconnects magnet electricity
Source carries out overheat protector.
Further, the digital signal processing module includes analog-to-digital conversion module, digital filtering module, normalization mould
Block, threshold generation module, excess temperature judgment module and command output module；
The analog-to-digital conversion module is connect with analog signal processing module, each for exporting to analog signal processing module
Coil voltage value carries out analog-to-digital conversion and obtains the digital voltage value of each coil；
The digital filtering module is connect with the analog-to-digital conversion module, and the digital voltage value for each coil carries out secondary
Filtering exports digital voltage value UFilter i；
The normalization module is connect with the digital filtering module, for digital voltage value UFilter iPlace is normalized
Reason obtains the normalization digital voltage U of each coilReturn i；
The threshold generation module, for generating the threshold value for judging excess temperature failure；
The excess temperature judgment module is separately connected with the normalization module and the threshold generation module, by by normalizing
Change digital voltage UReturn iIt is compared with the threshold value for judging excess temperature failure, judges the output overheat protector instruction of excess temperature failure；
The connection of the switch driver of described instruction output module and magnet power supply, exports for instructing the overheat protector
To the switch driver of magnet power supply, controls magnet power supply and disconnect progress overheat protector.
Further, the digital filtering module uses FIR filter.
Further, the normalization formula that the normalization module uses is UReturn i=UFilter i×ki；In formula,TiFor the temperature actual measured value of i-th of coil；UiIt is the coil in temperature TiWhen
Coil voltage value after being filtered；IIt surveysFor the actual measured value of magnet power supply DCCT electric current；IIfFor magnet power supply DCCT electricity
The setting value of stream.
Further, the threshold generation module includes first threshold generation module, second threshold generation module and third
Threshold generation module；
The first threshold generation module, for generating the first threshold U for judging whether to occur to block failure in water routeThreshold 1；
The second threshold generation module, for generating the second threshold U for the failure that judges whether to occur to cut off the water supply completelyThreshold 2；
The third threshold generation module, for generating the third threshold value U for judging whether that disconnection fault occursThreshold 3。
Further, the first threshold generation module includes mean module and multiplier；
The mean module is connect with normalization module, for calculating the normalization digital voltage U of each coilReturn i's
Mean value
The multiplier is connect with the mean module, for by prefabricated first threshold coefficient withIt is multiplied, obtains
To first threshold UThreshold 1, it is output to excess temperature judgment module；The first threshold coefficient is 110%；
The second threshold generation module receives the digital voltage value of the magnet power supply DCCT after digital filtering, with
Prefabricated second threshold multiplication, obtains second threshold UThreshold 2, it is output to excess temperature judgment module；The second threshold coefficient is
110%；
The second threshold generation module receives the digital voltage value of the magnet power supply DCCT after digital filtering, with
Prefabricated third threshold coefficient is multiplied, and obtains third threshold value UThreshold 3, it is output to excess temperature judgment module；The third threshold coefficient is
50%.
Further, the excess temperature judgment module includes Fisrt fault judgment module, the second breakdown judge module and third
Breakdown judge module；
The Fisrt fault judgment module is connect with normalization module and first threshold generation module；When normalization module is defeated
The i-th tunnel Chu normalizes digital voltage UReturn i> UThreshold 1When, then export overheat protector instruction and overtemperature alarm log；
The second breakdown judge module is connect with normalization module and second threshold generation module；When normalization module is defeated
The i-th tunnel Chu normalizes digital voltage UReturn i> UThreshold 2When, then export overheat protector instruction and overtemperature alarm log；
The third breakdown judge module is connect with normalization module and third threshold generation module；When normalization module is defeated
The i-th tunnel Chu normalizes digital voltage UReturn i< UThreshold 3When, then generate overheat protector instruction and overtemperature alarm log；
Fault message of the overtemperature alarm log including excess temperature failure coil number and fault type.
It further, further include human-computer interaction module；
The human-computer interaction module is connect with the normalization module, is received normalization digital voltage and is shown, is used for
Operator carries out voltage supervision；
The human-computer interaction module is connect with excess temperature judgment module, receives the overtemperature alarm that the excess temperature judgment module generates
Log judges excess temperature failure cause for operator and determines failure coil.
Further, the digital signal processing module is cRIO module.
A kind of pair of electronic collision machine, including any of the above-described interaction region special magnet coil over-temperature protection device.
The present invention has the beneficial effect that:
The present invention avoids false alarm caused by interference signal by digital filtering；By the way that place is normalized to multiple coils
Reason, the coil threshold value of the road Shi Ge different length obtain unification；It is compared by the threshold value with setting, finds temperaturing lifting abnormality, it can
To provide power-off signal when coil temperature rises to 75 DEG C, electric current is exported in 0.02 second internal cutting off magnet power supply, to accelerator
Magnet coil, which is effectively realized, reliably timely to be protected.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is interaction region magnet mounting condition pictorial diagram；
Fig. 2 is that the collider magnet coil over-temperature protection device in the embodiment of the present invention forms connection figure；
Fig. 3 is superposition 300mV interference signal waveform diagram on the 500mV magnet coil signal in the embodiment of the present invention；
Fig. 4 is that the digital signal processing module in the embodiment of the present invention forms connection figure；
Fig. 5 is the FIR filter transposition type structure chart in the embodiment of the present invention；
Fig. 6 is the signal waveforms after the digital filtering in the embodiment of the present invention；
Fig. 7 is DCCT and coil voltage multiple proportion figure in the embodiment of the present invention.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention.
The embodiment of the invention discloses a kind of interaction region special magnet coil protectors, as shown in Fig. 2, including voltage
Collector, analog signal processing module and digital signal processing module；
The voltage collector is connect with each coil of collider magnet, for acquiring each road coil voltage value of collider magnet
ULine i, i=1, N, N are the number of magnet coil；
According to the actual measurement of interaction region magnet coil, it is found that the interference signal being superimposed upon on useful signal is very big, such as Fig. 3
It is shown, need the voltage value U to acquisitionLine iIt is filtered；
The analog signal processing module is connect with the voltage collector,
Including isolator and RC filter；
Isolator is isolated with digital signal processing module for the heavy current signal to magnet coil, prevents forceful electric power
Stream damage digital signal processing module；
RC filter, each coil voltage value U for being acquired to voltage collectorLine iOnce filtered.
The digital signal processing module is connect with analog signal processing module, for by primary filtered each line
Circle voltage value obtains normalization digital voltage value U after carrying out analog-to-digital conversion, secondary filtering and normalizedReturn i, and by the electricity
Pressure value UReturn iIt is compared with the excess temperature judgment threshold of setting, judges excess temperature failure, output control signal disconnects magnet power supply and carries out
Overheat protector.
Optionally, the digital signal processing module uses cRIO module.
Specifically, as shown in figure 4, the digital signal processing module includes analog-to-digital conversion module, digital filtering module, returns
One changes module, threshold generation module, excess temperature judgment module and command output module；
The analog-to-digital conversion module is connect with analog signal processing module, each for exporting to analog signal processing module
Coil voltage value carries out analog-to-digital conversion and obtains the digital voltage value of each coil；
The digital filtering module is connect with the analog-to-digital conversion module, and the digital voltage value for each coil carries out secondary
Filtering exports digital voltage value UFilter i；
The normalization module is connect with the digital filtering module, for carrying out to the digital voltage value after secondary filtering
Normalized obtains the normalization digital voltage U of a coilReturn i；
The threshold generation module, for generating the threshold value for judging excess temperature failure；
The excess temperature judgment module is separately connected with the normalization module and the threshold generation module, by by normalizing
Change digital voltage UReturn iIt is compared with the threshold value of excess temperature failure, judges the output overheat protector instruction of excess temperature failure；
The connection of the switch driver of described instruction output module and magnet power supply, exports for instructing the overheat protector
To the switch driver of magnet power supply, controls magnet power supply and disconnect progress overheat protector.
Preferably, the digital filtering module uses FIR filter.
The N order difference equation that FIR filter usesIn formula, h (n) is the response of unit sample value
Output sequence, h (n-k) are output signal delay, and x (k) is filter coefficient.
The most important feature of FIR filter is that can obtain the filter with linear phase, and design filter determines x
(k) coefficient.
If the unit impulse response h (n) of Finite Impulse Response filter is a N point sequence, 0≤n≤N-1, then filter is
Number function are as follows:In formula, H (z) is system function, and h (n) is that system unit sample value responds output sequence,
That is it has (N-1) rank pole at z=0, there is (N-1) a zero point to be located at any position of limited z-plane.
Special, the order for the FIR filter that the present embodiment is selected is 208.
Since bandwidth and decline steepness to intermediate zone require relatively high, the FIR filtering of 208 ranks through this embodiment
Device, the signal of 200Hz or more are filtered substantially, filter later signal peak value and there was only 1mv, conversion to temperature value is 0.06
Degree effectively improves alarm accuracy, reduces false alarm.
Specifically, being determined by simulation software to FIR filter coefficient matrix x (k) are as follows:
[-0.0000628642737865447999,-0.0000343248248100280762,-
0.0000434331595897674561,-0.0000539310276508331299,-
0.0000659190118312835694,-0.00007950514554977417,-0.0000947713851928710938,-
0.000111814588308334351,-0.000130712985992431641,-0.000151533633470535278,-
0.000174332410097122192,-0.00019916146993637085,-0.000226031988859176636,-
0.000255003571510314942,-0.0002859458327293396,-0.000319041311740875244,-
0.000353999435901641846,-0.000390864908695220948,-0.000429574400186538697,-
0.000469911843538284302,-0.000511702150106430054,-0.000554788857698440552,-
0.000598959624767303467,-0.000643931329250335694,-0.000689387321472167969,-
0.000734988600015640259,-0.000780384987592697144,-0.000825170427560806275,-
0.000868920236825942994,-0.00091110914945602417,-0.000951252877712249756,-
0.000988785177469253541,-0.001023121178150177,-0.00105367973446846008,-
0.00107981264591217041,-0.00110083445906639099,-0.00111605972051620483,-
0.00112476944923400879,-0.00112623348832130432,-0.00111970305442810059,-
0.00110442563891410828,-0.00107965618371963501,-0.00104460865259170532,-
0.00099853426218032837,-0.000940658152103424073,-0.000870253890752792359,-
0.000786598771810531617,-0.000688988715410232544,-0.000576753169298171997,-
0.000449266284704208374,-0.000305928289890289307,-0.000146187841892242432,
0.0000304505228996276856,0.000224433839321136475,0.000436145812273025513,
0.000665906816720962525,0.000913940370082855225,0.00118042528629302979,
0.00146544352173805237,0.00176899880170822144,0.00209100916981697083,
0.00243130326271057129,0.00278961285948753357,0.00316558033227920532,
0.00355874374508857727,0.00396854802966117859,0.00439435243606567383,
0.00483539700508117676,0.00529084354639053345,0.00575974583625793457,
0.0062410794198513031,0.00673370808362960816,0.00723643973469734192,
0.00774798169732093811,0.00826696306467056275,0.00879194214940071106,
0.00932141393423080445,0.00985380262136459351,0.0103874877095222473,
0.0109208002686500549,0.0114520229399204254,0.011979423463344574,
0.0125012323260307312,0.0130156762897968292,0.0135209634900093079,
0.0140153206884860992,0.014496970921754837,0.0149641707539558411,
0.0154152028262615204,0.0158483944833278656,0.0162621140480041504,
0.0166547968983650208,0.0170249342918395996,0.0173710957169532776,
0.0176919437944889069,0.0179862119257450104,0.0182527452707290649,
0.0184904932975769043,0.0186985097825527191,0.018875952810049057,
0.0190221220254898071,0.019136425107717514,0.0192184038460254669,
0.0192677229642868042,0.0192841850221157074,0.0192677229642868042,
0.0192184038460254669,0.019136425107717514,0.0190221220254898071,
0.018875952810049057,0.0186985097825527191,0.0184904932975769043,
0.0182527452707290649,0.0179862119257450104,0.0176919437944889069,
0.0173710957169532776,0.0170249342918395996,0.0166547968983650208,
0.0162621140480041504,0.0158483944833278656,0.0154152028262615204,
0.0149641707539558411,0.014496970921754837,0.0140153206884860992,
0.0135209634900093079,0.0130156762897968292,0.0125012323260307312,
0.011979423463344574,0.0114520229399204254,0.0109208002686500549,
0.0103874877095222473,0.00985380262136459351,0.00932141393423080445,
0.00879194214940071106,0.00826696306467056275,0.00774798169732093811,
0.00723643973469734192,0.00673370808362960816,0.0062410794198513031,
0.00575974583625793457,0.00529084354639053345,0.00483539700508117676,
0.00439435243606567383,0.00396854802966117859,0.00355874374508857727,
0.00316558033227920532,0.00278961285948753357,0.00243130326271057129,
0.00209100916981697083,0.00176899880170822144,0.00146544352173805237,
0.00118042528629302979,0.000913940370082855225,0.000665906816720962525,
0.000436145812273025513,0.000224433839321136475,0.0000304505228996276856,-
0.000146187841892242432,-0.000305928289890289307,-0.000449266284704208374,-
0.000576753169298171997,-0.000688988715410232544,-0.000786598771810531617,-
0.000870253890752792359,-0.000940658152103424073,-0.00099853426218032837,-
0.00104460865259170532,-0.00107965618371963501,-0.00110442563891410828,-
0.00111970305442810059,-0.00112623348832130432,-0.00112476944923400879,-
0.00111605972051620483,-0.00110083445906639099,-0.00107981264591217041,-
0.00105367973446846008,-0.001023121178150177,-0.000988785177469253541,-
0.000951252877712249756,-0.00091110914945602417,-0.000868920236825942994,-
0.000825170427560806275,-0.000780384987592697144,-0.000734988600015640259,-
0.000689387321472167969,-0.000643931329250335694,-0.000598959624767303467,-
0.000554788857698440552,-0.000511702150106430054,-0.000469911843538284302,-
0.000429574400186538697,-0.000390864908695220948,-0.000353999435901641846,-
0.000319041311740875244,-0.0002859458327293396,-0.000255003571510314942,-
0.000226031988859176636,-0.00019916146993637085,-0.000174332410097122192,-
0.000151533633470535278,-0.000130712985992431641,-0.000111814588308334351,-
0.0000947713851928710938,-0.00007950514554977417,-0.0000659190118312835694,-
0.0000539310276508331299,-0.0000434331595897674561,-
0.0000343248248100280762,-0.0000628642737865447999]。
Preferably, FIR filter is realized by FPGA.Specifically, the FIR filter of corresponding transposition type structure is in FPGA
In, as shown in Figure 5.
Signal after digital filtering as shown in fig. 6, the later signal peak value of filtering only has 1mv, according to voltage with
The corresponding relationship of temperature, conversion to temperature value are 0.06 degree.
Specifically, the normalization formula that the normalization module used in the present embodiment uses is UReturn i=UFilter i×ki；In formula,
TiFor the temperature actual measured value of i-th of coil；
UiIt is the coil in temperature TiWhen coil voltage value after being filtered；
IIt surveysFor the actual measured value of magnet power supply DCCT electric current；
IIfFor the setting value of magnet power supply DCCT electric current；
4 ‰ be temperature coefficient of the copper conductor at 20 DEG C.
3 is assume magnet power supply in 1500A setting value, and magnet coil voltage value is 3v；
By substituting into the voltage U per magnet coil all the wayi, temperature value Ti, can be obtained per corresponding normalization system all the way
Number, by the voltage value of the magnet coil of Length discrepancy respectively multiplied by the coefficient to get to the electricity of the magnet coil after one group of normalization
Pressure value, so that it may be compared with same threshold value.
Specifically, the threshold generation module that the present embodiment uses includes first threshold generation module, second threshold generation mould
Block and third threshold generation module；
The first threshold generation module, for generating the first threshold U for judging whether to occur to block failure in water routeThreshold 1；
The second threshold generation module, for generating the second threshold U for the failure that judges whether to occur to cut off the water supply completelyThreshold 2；
The third threshold generation module, for generating the third threshold value U for judging whether that disconnection fault occursThreshold 3。
Further, the first threshold generation module includes mean module and multiplier；
The mean module is connect with normalization module, for calculating the normalization digital voltage U of each coilReturn i's
Mean value
The multiplier is connect with the mean module, for by prefabricated first threshold coefficient withIt is multiplied, obtains
To first threshold UThreshold 1, it is output to excess temperature judgment module；The first threshold coefficient is 110%；
The second threshold generation module receives the digital voltage value of the magnet power supply DCCT after digital filtering, with
Prefabricated second threshold multiplication, obtains second threshold UThreshold 2, it is output to excess temperature judgment module；The second threshold coefficient is
110%；
The second threshold generation module receives the digital voltage value of the magnet power supply DCCT after digital filtering, with
Prefabricated third threshold coefficient is multiplied, and obtains third threshold value UThreshold 3, it is output to excess temperature judgment module；The third threshold coefficient is
50%.
In the present embodiment, temperature coefficient at 20 degree of magnet coil resistance is 0.00393/ DEG C；The temperature in line packet exit
It is 20 degree, when coil reaches 75 degree of alarm threshold values, resistance calculations formula are as follows:
Here, ρ is resistivity 0.0182 (20 DEG C)；α is 0.00393/ DEG C of temperature-coefficient of electrical resistance；Δ T is temperature rise；
Increased resistance value: ‰ × R1 of Δ R=4 × Δ T；
In formula, R1 is initial resistivity value；
The voltage at coil both ends can indicate are as follows:
Resistance value when R is 20 degree of coil；
Δ R is the resistance variations caused by coil temperature rise；
It is the induced voltage (very little) of coil, can be ignored；
Because magnet power supply is constant to the electric current of coil, then voltage variety on coil are as follows: Δ V=I × Δ R.
By the variation of the temperature value of the available coil of variation of the voltage value on every section of coil of measurement, due to every section of line
The length of circle is different, so initial resistivity value and voltage variety are all different, in order to same threshold value comparison, by interaction region
136 road coil voltage of magnet has carried out normalized, then warning level when by average value × 110% as cooling water blockage
Value.
In the present embodiment, using the average value of each road coil voltage as normal value, overtemperature alarm threshold value is set as 75 degree；With
For ISPB magnet, when each coil works under the electric current of 1400A simultaneously, wherein coil voltage is about 1.7V all the way；And
When temperature is 75 degree, this road coil voltage can be increased to 1.87V, be the 110% of each coil voltage average value.
If cooling water system, there is a situation where cutting off the water supply completely, the temperature of all coils all will rise rapidly, each line
The voltage value of circle can all rise, and at this moment again using the average value of each coil voltage as the benchmark of alarm threshold value, just will appear very big
Error；
Therefore, the present embodiment, which is used, is associated with the output valve of little magnet power supply DCCT with water temperature variation as alarm threshold value
Benchmark is surveyed with magnet power supply DCCT output valve × 110% for threshold value according to DCCT output valve under different current values and magnet coil
The multiple proportion that magnitude both fits, as shown in fig. 6, to the threshold value in the case of being cut off the water supply.
Under normal conditions, burn out detection should measure resistance value, but after being switched on tunnel be it is closed, break after booting
Possibility is smaller, we are there is no special detection resistance value thus, and when booting does not alarm and every road back production is all normal, I
To be considered as line normal.After detection line disconnects, it is possible to signal testing terminal shortcircuit, it is possible to ride over bypass coil, at this moment, break
Line this all the way voltage value can very little, to prevent false alarm to be set as threshold value, with magnet power supply DCCT output valve × 50% be threshold
Value.
Specifically, the excess temperature judgment module in the present embodiment includes Fisrt fault judgment module, the second breakdown judge module
With third breakdown judge module；
The Fisrt fault judgment module is connect with normalization module and first threshold generation module；When normalization module is defeated
The i-th tunnel Chu normalizes digital voltage UReturn i> UThreshold 1When, then export overheat protector instruction and overtemperature alarm log；
The second breakdown judge module is connect with normalization module and second threshold generation module；When normalization module is defeated
The i-th tunnel Chu normalizes digital voltage UReturn i> UThreshold 2When, then export overheat protector instruction and overtemperature alarm log；
The third breakdown judge module is connect with normalization module and third threshold generation module；When normalization module is defeated
The i-th tunnel Chu normalizes digital voltage UReturn i< UThreshold 3When, then generate breaking protection instruction and overtemperature alarm log；
Fault message of the overtemperature alarm log including excess temperature failure coil number and fault type.
Specifically, the protective device in the present embodiment further includes human-computer interaction module；
The human-computer interaction module is connect with the normalization module, is received normalization digital voltage and is shown, is used for
Operator carries out voltage supervision；
The human-computer interaction module is connect with excess temperature judgment module, receives the overtemperature alarm that the excess temperature judgment module generates
Log judges excess temperature failure cause for operator and determines failure coil.
The present embodiment also discloses a kind of electronic collision machine, the interaction region special magnet setting of the electronic collision machine just like
Coil protector described in above-described embodiment, including voltage collector, analog signal processing module and Digital Signal Processing
Module；Voltage collector acquires the voltage signal of interaction region special magnet, is filtered by the isolation of analog signal processing module and RC
After wave, after carrying out analog-to-digital conversion, secondary filtering and normalized in input signal processing module, obtain normalizing digital electricity
Pressure value UReturn i, and by the digital voltage value UReturn iIt is compared with the excess temperature judgment threshold of setting, judges excess temperature failure, output control
Signal processed disconnects magnet power supply and carries out overheat protector.
Power-off signal can be provided when coil temperature rises to 75 DEG C, in 0.02 second internal cutting off magnet power supply output electricity
Stream, effectively realizes accelerator magnet coil and reliably timely protects.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of interaction region special magnet coil over-temperature protection device, which is characterized in that including voltage collector, analog signal
Processing module and digital signal processing module；
The voltage collector is connect with each coil of collider magnet, for acquiring each road coil voltage value U of collider magnetLine i, i
=1, N, N are the number of magnet coil；
The analog signal processing module is connect with the voltage collector, for the voltage value ULine iCarry out signal isolation and
Primary filtering；
The digital signal processing module is connect with analog signal processing module, for by primary filtered each coil electricity
After pressure value carries out analog-to-digital conversion, secondary filtering and normalized, normalization digital voltage value U is obtainedReturn i, and by the number
Voltage value UReturn iBe compared with the excess temperature judgment threshold of setting, judge excess temperature failure, output control signal disconnect magnet power supply into
Row overheat protector.
2. protective device according to claim 1, which is characterized in that the digital signal processing module includes analog-to-digital conversion
Module, digital filtering module, normalization module, threshold generation module, excess temperature judgment module and command output module；
The analog-to-digital conversion module is connect with analog signal processing module, each coil for exporting to analog signal processing module
Voltage value carries out analog-to-digital conversion and obtains the digital voltage value of each coil；
The digital filtering module is connect with the analog-to-digital conversion module, and the digital voltage value for each coil carries out secondary filter
Wave exports digital voltage value UFilter i；
The normalization module is connect with the digital filtering module, for digital voltage value UFilter iIt is normalized to obtain
The normalization digital voltage U of each coilReturn i；
The threshold generation module, for generating the threshold value for judging excess temperature failure；
The excess temperature judgment module is separately connected with the normalization module and the threshold generation module, by that will normalize number
Word voltage UReturn iIt is compared with the threshold value for judging excess temperature failure, judges the output overheat protector instruction of excess temperature failure；
The switch driver of described instruction output module and magnet power supply connection, for overheat protector instruction to be output to magnetic
The switch driver in ferroelectricity source, control magnet power supply, which disconnects, carries out overheat protector.
3. protective device according to claim 2, which is characterized in that the digital filtering module uses FIR filter.
4. protective device according to claim 2, which is characterized in that the normalization formula that uses of normalization module for
UReturn i=UFilter i×ki；In formula,TiFor the temperature actual measured value of i-th of coil；UiFor
The coil is in temperature TiWhen coil voltage value after being filtered；IIt surveysFor the actual measured value of magnet power supply DCCT electric current；IIf
For the setting value of magnet power supply DCCT electric current.
5. protective device according to claim 2, which is characterized in that the threshold generation module includes that first threshold generates
Module, second threshold generation module and third threshold generation module；
The first threshold generation module, for generating the first threshold U for judging whether to occur to block failure in water routeThreshold 1；
The second threshold generation module, for generating the second threshold U for the failure that judges whether to occur to cut off the water supply completelyThreshold 2；
The third threshold generation module, for generating the third threshold value U for judging whether that disconnection fault occursThreshold 3。
6. protective device according to claim 5, which is characterized in that the first threshold generation module includes mean module
And multiplier；
The mean module is connect with normalization module, for calculating the normalization digital voltage U of each coilReturn iMean value
The multiplier is connect with the mean module, for by prefabricated first threshold coefficient withIt is multiplied, obtains the
One threshold value UThreshold 1, it is output to excess temperature judgment module；The first threshold coefficient is 110%；
The second threshold generation module receives the digital voltage value of magnet power supply DCCT after digital filtering, and prefabricated
Second threshold multiplication, obtain second threshold UThreshold 2, it is output to excess temperature judgment module；The second threshold coefficient is
110%；
The second threshold generation module receives the digital voltage value of magnet power supply DCCT after digital filtering, and prefabricated
Third threshold coefficient be multiplied, obtain third threshold value UThreshold 3, it is output to excess temperature judgment module；The third threshold coefficient is 50%.
7. protective device according to claim 5, which is characterized in that the excess temperature judgment module includes Fisrt fault judgement
Module, the second breakdown judge module and third breakdown judge module；
The Fisrt fault judgment module is connect with normalization module and first threshold generation module；When normalization module output
I-th tunnel normalizes digital voltage UReturn i> UThreshold 1When, then export overheat protector instruction and overtemperature alarm log；
The second breakdown judge module is connect with normalization module and second threshold generation module；When normalization module output
I-th tunnel normalizes digital voltage UReturn i> UThreshold 2When, then export overheat protector instruction and overtemperature alarm log；
The third breakdown judge module is connect with normalization module and third threshold generation module；When normalization module output
I-th tunnel normalizes digital voltage UReturn i< UThreshold 3When, then generate overheat protector instruction and overtemperature alarm log；
Fault message of the overtemperature alarm log including excess temperature failure coil number and fault type.
8. protective device according to claim 5, which is characterized in that further include human-computer interaction module；
The human-computer interaction module is connect with the normalization module, is received normalization digital voltage and is shown, for operating
Personnel carry out voltage supervision；
The human-computer interaction module is connect with excess temperature judgment module, receives the overtemperature alarm day that the excess temperature judgment module generates
Will judges excess temperature failure cause for operator and determines failure coil.
9. -8 any protective device according to claim 1, which is characterized in that the digital signal processing module is cRIO
Module.
10. a kind of pair of electronic collision machine, which is characterized in that including any interaction region special magnet line of claim 1-9
Enclose over-temperature protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548744.1A CN109617012B (en) | 2018-12-18 | 2018-12-18 | Collision area special type magnet coil protection device and electron collider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548744.1A CN109617012B (en) | 2018-12-18 | 2018-12-18 | Collision area special type magnet coil protection device and electron collider |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109617012A true CN109617012A (en) | 2019-04-12 |
| CN109617012B CN109617012B (en) | 2019-12-27 |
Family
ID=66010555
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811548744.1A Expired - Fee Related CN109617012B (en) | 2018-12-18 | 2018-12-18 | Collision area special type magnet coil protection device and electron collider |
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| Country | Link |
|---|---|
| CN (1) | CN109617012B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117102701A (en) * | 2023-10-24 | 2023-11-24 | 上海方菱计算机软件有限公司 | Compensation control method and device for groove cutting height, electronic equipment and storage medium |
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| CN204967237U (en) * | 2015-09-01 | 2016-01-13 | 惠仁望都医疗设备科技有限公司 | Temperature protective device of nuclear magnetic resonance equipment |
| CN105322505A (en) * | 2015-11-26 | 2016-02-10 | 成都启臣微电子有限公司 | External over-temperature protection circuit for switching power supply |
| CN108811298A (en) * | 2018-06-27 | 2018-11-13 | 中国原子能科学研究院 | A kind of system and method for temperature-compensating automatic adjustment cyclotron main field |
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| US20030202298A1 (en) * | 1993-09-17 | 2003-10-30 | Satoshi Tamaki | Protecting device of electromobile |
| CN102377169A (en) * | 2010-08-05 | 2012-03-14 | 快捷韩国半导体有限公司 | Thermal shutdown unit, switch controller including the same, and control method of thermal shutdown protection operation |
| CN204967237U (en) * | 2015-09-01 | 2016-01-13 | 惠仁望都医疗设备科技有限公司 | Temperature protective device of nuclear magnetic resonance equipment |
| CN105322505A (en) * | 2015-11-26 | 2016-02-10 | 成都启臣微电子有限公司 | External over-temperature protection circuit for switching power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117102701A (en) * | 2023-10-24 | 2023-11-24 | 上海方菱计算机软件有限公司 | Compensation control method and device for groove cutting height, electronic equipment and storage medium |
| CN117102701B (en) * | 2023-10-24 | 2024-03-26 | 上海方菱计算机软件有限公司 | Compensation control method and device for groove cutting height, electronic equipment and storage medium |
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|---|---|
| CN109617012B (en) | 2019-12-27 |
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