CN101895215A - Biological effect electromagnet system - Google Patents
Biological effect electromagnet system Download PDFInfo
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- CN101895215A CN101895215A CN 201010200040 CN201010200040A CN101895215A CN 101895215 A CN101895215 A CN 101895215A CN 201010200040 CN201010200040 CN 201010200040 CN 201010200040 A CN201010200040 A CN 201010200040A CN 101895215 A CN101895215 A CN 101895215A
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Abstract
The invention discloses a biological effect electromagnet system, which connects in series a delayed conduction current-limiting protection in a power supply circuit and overcomes the defects that fuse wires and power devices are easy to be damaged in similar products. A power control circuit is connected with an electromagnet coil in series and then is connected in parallel to the output end of the electromagnet direct-current converter; the input end of an interval controller is connected with the power supplying input end of a pulse controller; the output end of the pulse controller is connected with the input end of the power control circuit, thereby realizing the output of an interval magnetic field pulse or an interval steady magnetic field; and the electromagnet and the electromagnet transformer has sufficient time for resting and radiating in the interval time, under the same equipment standard condition, the system of the invention can realize higher magnetic field intensity output compared with the prior art, and the mode of the magnetic field output is diversified; and the invention can be applied to the production of biological effect electromagnet with larger power, low cost, high reliability and multi-magnetic field output modes, and can be used for the magnetic field stimulation improved production or research of the biological tissue or animals and plants species.
Description
Technical field
The present invention relates to a kind of electromagnet system, especially refer to a kind of biological effect electromagnet system.
Background technology
Electromagnet system comprises electromagnet transformer, electromagnet DC converter and electromagnet, and biological effect electromagnet system also is like this.Electromagnet transformer, electromagnet DC converter are with after the step-down of 220 volts of electric mains process electromagnet transformers, deliver to bridge rectifier and are transformed into Rectified alternating current, deliver to the filter circuit that comprises filter capacitor again, thereby have formed level and smooth direct current.Voltage stabilizing or current stabilization also will be delivered to filtered direct current switch or series connection voltage stabilizing or current stabilization circuit and carry out voltage stabilizing or current stabilization if desired, export galvanic current at last and deliver to electromagnet generation magnetic field.Obtain high-intensity magnetic field, electromagnet DC converter output current is the order of magnitude up to tens amperes often.Because output current is very big, in order to guarantee filter effect, the capacitance of the filter capacitor that needs is very big (often up to several ten thousand microfarads) just, this just causes the charging current of starting shooting very big, the input impedance of adding the large power supply transformer is very little, and the initial current that has caused start is much larger than rated operational current.This will select the very big fuse of current specification, even if also burn constantly considerably beyond the rated current fuse when work, make the internal power components and parts often damage, and fuse does not have real safety effect yet.Nonetheless, when normal the startup, fuse also usually blows unawares.
It is well known fact that the action of a magnetic field has biological effect in organism.Such as: can be used for the improvement of seed with the action of a magnetic field of special parameter in vegetable seeds, the action of a magnetic field of special parameter can be used for treating disease or the like in human body, and the research of this respect is also all carried out in fields such as biology, medical science, agronomy widely.This just needs the magnetic field intensity regulated quantity of wide region, require the magnetic field intensity of output enough strong, and the mode of the action of a magnetic field is many as far as possible, but biological effect electromagnet of the prior art does not satisfy this demand.Export high-intensity magnetic field; usually be limited by the restriction of the rated power of electromagnet transformer and power output associated electrical components and parts; huge large power, electrically magnet system such as 80,000 yuan of certain companies' productions of buying of I campus belle; its maximum magnetic field strength is 2 teslas only also; it can only export single constant magnetic field pattern, and the phenomenon of insurance often takes place to burn.The maximum of electromagnet transformer and power output electronic component uses power also not make full use of, and the output magnetic field intensity also has very big surplus, does not satisfy the needs of production application and scientific research.
Summary of the invention
The purpose of this invention is to provide a kind of biological effect electromagnet system that starts automatic current limiting protection, the output of adjustable intermittent pulse magnetic field that has.It has the significantly high-intensity magnetic field fan-out capability of the rated output power of super device, also has high reliability.
To achieve these goals; the present invention connects by power line attaching plug with fuse and mains switch; the output of electromagnet transformer links to each other with the input of electromagnet DC converter; the output of electromagnet DC converter links to each other with an end of electromagnet; the other end of electromagnet links to each other with the output of power control circuit; electromagnet is also in parallel with the self induction voltage suppression element; the output of the input termination impulse controller of power control circuit; the output of intermittent controller links to each other with the power input of impulse controller; an input of electromagnet transformer links to each other with a power line by the execution unit of the logical current-limiting protection circuit of time-delay; another another power line of input termination; the output of stabilized voltage power supply links to each other the input termination power line of stabilized voltage power supply with the power input of intermittent controller and the logical current-limiting protection circuit of time-delay.
In order to simplify circuit, reduce cost and improve performance, the logical current-limiting protection circuit of intermittent controller and impulse controller and time-delay is to be formed by connecting by 555 time-base integrated circuits and peripheral component.In order intuitively to observe the working condition of each several part circuit easily, the output of intermittent controller and impulse controller links to each other with the light-emitting diode operating state display circuit that series connection constitutes with current-limiting resistance.Use for convenience and reduce cost, have scale on the adjusting knob of the intermittent time regulator potentiometer of intermittent controller and on the adjusting knob of the pulse frequency regulator potentiometer of impulse controller.
In order to realize different working modes, the timing capacitor of intermittent controller and impulse controller all is parallel with switch.
Because the present invention is in series with power control circuit at the power supply circuits of electromagnet, the input of power control circuit links to each other with the output of impulse controller, and dexterously the power supply of pulse controller input is taken from the output end voltage of intermittent controller, make intermittent controller may command impulse controller work whether, and impulse controller can the power controlling control circuit, so just can realize the output of power control circuit intermittent pulse type electric current, electromagnet has also just been realized the output of intermittent pulse type magnetic field.Because power control circuit has been realized the output of intermittent pulse type electric current, make output current and process current of electromagnet discontinuous move.In the time of being interrupted, no current is by the output device of electromagnet, power control circuit, electromagnet DC converter, the bridge rectifier of electromagnet transformer and electromagnet DC converter also is in very little electric current input/output state, the heat of above-mentioned these devices is distributed, and the rated power that allows to surpass in the time of conducting separately uses.This is just than the be significantly increased effect of power output or output current of non-discontinuous output device of the prior art, thereby the magnetic field intensity of electromagnet output is obviously improved, and parts such as electromagnet transformer, electromagnet DC converter, electromagnet can be used with the prior art same specification.Also be the present invention's utilance of having improved resource significantly, improved performance, reduced cost (electromagnet transformer and electromagnet are the cost major part).The electromagnet and the electromagnet transformer of same volume or specification are with obtaining stronger magnetic field after this invention.
Owing to be in series with the logical current-limiting protection circuit of time-delay in the circuit of the present invention between power line and electromagnet DC converter; make and when start, do not produce large impact electric current (or claiming big initial current); thereby can select the fuse that is complementary with the complete machine running current for use; inner components and parts have adequately protected; and frequent blown out phenomenon can not take place, improved the reliability of complete machine and the convenience of use.
The timing capacitor of intermittent controller of the present invention and impulse controller all is parallel with switch, can select different working methods as required easily.The output of intermittent controller and impulse controller all has the light-emitting diode indicating circuit, but visual pattern ground shows operating state separately.
Description of drawings
Accompanying drawing is the embodiments of the invention circuit theory diagrams.
Embodiment
What in the drawings, frame of broken lines was got up 13 is the logical current-limiting protection circuits of time-delay.What frame of broken lines was got up 16 is stabilized voltage power supplys.Power transformer BY is the step-down of 220V electric main 15V, give the bridge rectifier that constitutes by diode D1, D2, D3, D4 and become Rectified alternating current, become level and smooth voltage stabilizing 12V direct current through filtering capacitor C 3, C4, C5, C6 and three terminal regulator IC1 again, as the working power of relevant control circuit.2 pin of first 555 o'clock base ic chip and 6 pin connect together and meet timing capacitor C1 and timing resistor R1 and discharge diode D7; 4 pin and 8 pin connect together and connect the galvanic positive pole of voltage stabilizing 12V; 1 pin ground connection, 5 pin connect capacitor C 2, and output 3 pin connect the base stage of triode T by protective resistance R2.The grounded emitter of triode T, the solenoid J of collector connecting relay, protection diode D6 are that protection triode T is not punctured by the back-emf of the solenoid J of relay.Power line on the termination after the normally open contact switch JK parallel connection of current-limiting resistance R3 and relay, the upper end of the elementary winding of another termination electromagnet transformer BM is as the execution unit of the logical current-limiting protection circuit 13 of time-delay.If relay J does not need very big drive current, also can omit triode T and resistance R 2, will be connected on (plus earth of diode D6) between IC output 3 pin and the ground together with protection diode D6 this moment with electromagnetic coil relay J.
Following power line and the lower end that connects the elementary winding of electromagnet transformer BM after fuse 10 is connected.The secondary winding of electromagnet transformer BM links to each other with the input of electromagnet DC converter 11.The output of electromagnet DC converter 11 is 12.The internal circuit of electromagnet DC converter 11 can be with various types of structures of the prior art, (this is identical with bridge rectifier that is made of diode D1, D2, D3, D4 and the connected mode of filter capacitor C3 among Fig. 1 but its circuit structure all comprises bridge rectifier and filter capacitor, but owing to require high power output, bridge rectifier will be piled with the bridge about 50A, and filter capacitor is also wanted the capacity of several ten thousand microfarads).Electromagnet L can use common all kinds of electromagnet in the prior art.Attaching plug 9 and two power lines join.A mains switch K (also can omit this switch replaces with plug attaching plug 9) also can connect between last power line and the attaching plug.
The operation principle of the logical current-limiting protection circuit 13 of time-delay is as follows: in the moment that rigidly connects energize, voltage on the timing capacitor C1 can not suddenly change, make 2 pin and the 6 pin current potentials of 555 o'clock base ic chips higher, its output 3 pin no-output voltages, make triode T end, no current among the electromagnetic coil relay J, the normally open contact switch JK of relay also is in off-state, current-limiting resistance R3 just seals in the elementary winding of electromagnet transformer BM, thereby has limited starup current; After serving as for 5 seconds, voltage on the timing capacitor C1 raises, make 555 o'clock base 2 pin of ic chip and 6 pin current potentials drop to 1/3 when following of stabilized voltage power supply voltage, its output 3 pin output HIGH voltages, cause triode T conducting, among the electromagnetic coil relay J electric current is arranged, the normally open contact switch JK of relay connects, and current-limiting resistance R3 is by short circuit and operate as normal.This moment, electric current was reduced near the rated current, can not produce the process above rated current because the initial current process of the start of previous start-up course is pass by.Because start-up course only several seconds, current-limiting resistance R3 caloric value seldom and the heating process very of short duration, can use very powerful resistance.Certainly, current-limiting resistance R3 also available inductors replaces, and its induction reactance reply 50HZ alternating current presents the resistance greater than 30 ohm, and the enamelled wire diameter of inductance coil is greater than 0.9 millimeter, and it is enough big that electromagnetic core is also wanted, but cost improves in the case, and volume increases.The present invention is with current-limiting resistance R3 or above-mentioned inductor general designation current limiting element.
The intermittent controller A of present embodiment is made up of second 555 o'clock base integrated package IC2 and peripheral cell.Its essence is an adjustable ultralow frequency multivibrator that has control switch.Be connected between 2,6 pin and ground of IC2 after capacitor C 7 and K switch 1 are in parallel.2,6 pin of IC2 connect together and also link to each other with potentiometer R5 lower end.7 pin of IC2 link to each other with resistance R 4 lower ends with the center-side of potentiometer R5.4,8 pin of IC2 and resistance R 4 upper ends connect together and meet the anodal 12V of stabilized voltage power supply 16.Capacitor C 8 is connected between 5 pin and ground of IC2.The 1 pin ground connection of IC2.Output 3 pin of IC2 connect the output display circuit that is made of light-emitting diode DX and current-limiting resistance RX series connection and the power input (8 pin of IC3) of impulse controller B simultaneously, can realize the control (if the 3 pin no-voltages of IC2 can cause impulse controller B not work because of no operating voltage) of paired pulses controller B simultaneously.Output 3 pin of IC2 high level output all the time when K switch 1 is connected.
The impulse controller B of present embodiment is made up of the 3rd 555 o'clock base integrated package IC3 and peripheral cell.Its essence also is a multivibrator that has control switch.Be connected between 2,6 pin and ground of IC3 after capacitor C 9 and K switch 2 are in parallel.2,6 pin of IC3 connect together and also link to each other with potentiometer R7 lower end.7 pin of IC3 link to each other with resistance R 6 lower ends with the center-side of potentiometer R7.Output 3 pin that 4,8 pin of IC3 and resistance R 6 upper ends connect together and meet IC2.Capacitor C 10 is connected between 5 pin and ground of IC3.The 1 pin ground connection of IC3.Output 3 pin of IC3 meet second output display circuit being made of light-emitting diode DH and current-limiting resistance RH series connection and the input pickup resistance R8 of power control circuit C.Output 3 pin of IC2 high level output all the time when K switch 2 is connected.
The power control circuit C of present embodiment is made up of large power triode T1 and T2, resistance R 8, diode DY.Wherein large power triode T1 and T2 are connected into the compound transistor structure, can be directly drive with output 3 pin of IC3 resistance R 8 by metering function, and can make the abundant conducting of T2, thus improved the power consumption that output current has reduced T2, increase the actual available power consumption of T2.The grounded emitter of large power triode T2.The output of electromagnet L and a termination power control circuit C after diode DY is in parallel, the output 12 of another termination electromagnet DC converter 11.The ground of the ground of stabilized voltage power supply 16 and electromagnet DC converter 11 is connected together commonly.Diode DY works the self induction voltage effect that produces when absorbing the coil blackout that suppresses electromagnet L.
The circuit control procedure of present embodiment output mode is as follows:
K switch 1 and K2 are disconnected, and intermittent controller A just begins to carry out low-frequency oscillation with low frequency very, thereby makes the intermittently square wave direct current electricity of output voltage 6V of its output 3 pin, and this 6V direct voltage is intermittently delivered to impulse controller B as its operating voltage.Have between the voltage period of output at intermittent controller A, impulse controller B is with regard to work and self-oscillation has pulse output; Between intermittent controller A no-voltage period of output, impulse controller B is just because of the power failure no-output that quits work.Therefore, the voltage signal from impulse controller B output is that the umber of pulse of being interrupted.The break time (or claiming interruption cycle) and the pulse frequency of regulator potentiometer R5, R7 difference scalable impulse controller B output.In impulse controller B had the time of pulse output, power control circuit C conducting made electromagnet L obtain the highest output voltage near electromagnet DC converter 11 (1.06V is only lacked in actual measurement), thereby produces pulsed magnetic field; In the intermittent time of impulse controller B no pulse output, power control circuit C disconnects, the output of no magnetic field.This has just produced the intermittently pulsed magnetic field effect of output.Because at tempus intercalare, not conducting of power control circuit C, large power triode T1 and not conducting of T2, make that no current passes through among the electromagnet L, electromagnet DC converter 11, electromagnet transformer BM be output current not substantially also, cause these power devices to be had a rest and dispel the heat, temperature reduces, and is waiting for the arrival of next pulse.This shows that the above-mentioned device of its average power consumption all reduces significantly, caloric value also and then reduces significantly, but the magnetic field intensity of output does not reduce.Because the final caloric value of related power device reduces significantly under the above-mentioned situation, just can utilize the output voltage that improves electromagnet transformer BM (needn't increase its volume, as long as make secondary winding into thinner enamelled wire, increase around the number of turns just, so its iron material and copper material cost all no raising), the output voltage (or output current) that improves electromagnet DC converter 11 simultaneously improves the operating current by electromagnet L, and then significantly improves the effect that electromagnet is exported magnetic field intensity.The mode of this lifting magnetic field intensity increases than the volume that utilize to improve electromagnet transformer BM in the prior art that power output and electromagnet L are much lower with the mode cost of bigger iron core and thicker enamelled wire, volume does not increase yet.
After K switch 2 is connected, the 3 pin output of impulse controller B be the permanent steady voltage of intermittently output, it promotes power control circuit C and finally makes the intermittently constant magnetic field of output of electromagnet L output, its technical advantage and effect are same as described above.After K switch 1 is connected, intermittently control A and working power is provided for all the time impulse controller B, be non-output at intermittence.
Contact 14 and 15 is external frequency meter test contacts, can be external frequency meter measure the output frequency of intermittent controller A and impulse controller B.Also but the built-in frequency meter of this machine is changed by change over switch.In order to read the output frequency of intermittent controller A and impulse controller B more easily, the usable frequency meter has been proofreaded the dial frequency numerical value on potentiometer R5 and the R7, and is imprinted on the instrument panel, can be unlike having joined frequency meter again when re-using, so cost reduces, and uses also more convenient.The most handy intermittent time of indication of intermittent controller A is represented the most definite.
Each component parameter of present embodiment is as follows:
The resistance of resistance R 1, R2, R4, R6, RX, RH is respectively 50K, 3K, 5.1K, 5.1K, 2K, 2K, potentiometer R5, R7 are 1 megaohm entirely, and the resistance about a 2K of preferably potentiometer R5, R7 being connected separately again, the out-of-control phenomenon when preventing its resistance set to zero.Wherein R8 will be with the resistance about 75 Europe of 1 watt or above power.Current-limiting resistance R3 can get one section with the 1500W electric furnace heating wire, the about 5-12 ohm of resistance, again it is drawn back the slit after two ends be fixed on the insulation board of exotic materials such as a pottery or bakelite with screw, the fixed screw at its two ends is exactly its resistance binding post.Also available other 6-12 ohms of current-limiting resistance R3, rated current replace greater than the finished product resistance of 3A, and its rated current specification depends on the complete machine operating current.The capacitance of capacitor C 1, C2, C3, C4, C5, C6, C7, C8, C9, C10 is respectively 100,0.01,470,0.1,470,0.1,10,0.01,1,0.01 microfarad.Integrated circuit (IC), IC2, IC3 are general 555 time-base circuit integrated packages entirely.Diode D1, D2, D3, D4, D6, D7 are 1N4007 entirely, wherein the also available switching diode 1N4148 of D6, D7.Diode DY can be with various withstand voltage 1000V above and big current power diode, also available a plurality of 1N4007 are in parallel to be used to increase power.Large power triode T1, T2 use 3DD15D, MJ15024G (its output current maximum rating 16A is if require the available MJ10016 of bigger output current, its output current maximum rating 50A) respectively.Triode T can use C9013.Circuit of three-terminal voltage-stabilizing integrated IC1 is with 7812.The solenoid J rated operational voltage of relay J is 12V's, the rated current of its normally open contact switch JK will be with 15A above (specifically will see complete machine operating current size), also can in parallel use its two groups of normally open contact switches, this can significantly improve and allow the current value that passes through.Power transformer BY can use output voltage 15V, rated power greater than 5W's.Mains switch K can use the above toggle switch of 15A.K switch 1, K2 can be with small-sized common dibit toggle switches.Fuse 10 is chosen by the complete machine rated operational current.The parameter of electromagnet transformer BM, electromagnet DC converter 11, electromagnet L is pressed all kinds of designs of the prior art and selection just as required.
The pulsed magnetic field producing method of the present invention also method of available machinery produces, and also promptly sample is placed on the mechanical device of field region of the electromagnet of can coming in and going out.The mechanical device of field region of electromagnet of can coming in and going out can adopt modes such as periodically automatically flexible entrance and exit type, rotary vane fan entrance and exit type, swing turnover.Impulse controller B can remove in the case, and directly the left end of the IC2 output 3 pin connecting resistance R8 of intermittent controller A, cut-off switch K1 still can realize batch (-type) pulsed magnetic field effect.
Circuit structure of the present invention can have multiple variation.Such as: also available solid-state relay of power control circuit C or high-power FET circuit replace; It intermittently and also available other types of pulse control circuit; Can also on basis of the present invention, add other output mode control circuits or the like, but essence of the present invention is not all left in these variations.
Claims (5)
1. biological effect electromagnet system; attaching plug is connected with fuse and mains switch by power line; the output of electromagnet transformer links to each other with the input of electromagnet DC converter; the output of electromagnet DC converter links to each other with an end of electromagnet; the other end that it is characterized in that electromagnet links to each other with the output of power control circuit; electromagnet is also in parallel with the self induction voltage suppression element; the output of the input termination impulse controller of power control circuit; the output of intermittent controller links to each other with the power input of impulse controller; an input of electromagnet transformer links to each other with a power line by the execution unit of the logical current-limiting protection circuit of time-delay; another another power line of input termination; the output of stabilized voltage power supply links to each other the input termination power line of stabilized voltage power supply with the power input of intermittent controller and the logical current-limiting protection circuit of time-delay.
2. by the described biological effect electromagnet system of claim 1, it is characterized in that the logical current-limiting protection circuit of intermittent controller and impulse controller and time-delay is to be formed by connecting by 555 time-base integrated circuits and peripheral component.
3. by the described biological effect electromagnet system of claim 1, it is characterized in that the output of intermittent controller and impulse controller links to each other with the light-emitting diode operating state display circuit that series connection constitutes with current-limiting resistance.
4. by the described biological effect electromagnet system of claim 1, it is characterized in that having scale on the adjusting knob of intermittent time regulator potentiometer of intermittent controller and on the adjusting knob of the pulse frequency regulator potentiometer of impulse controller.
5. by the described biological effect electromagnet system of claim 1, it is characterized in that the timing capacitor of intermittent controller and impulse controller all is parallel with switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010200040 CN101895215A (en) | 2010-06-13 | 2010-06-13 | Biological effect electromagnet system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010200040 CN101895215A (en) | 2010-06-13 | 2010-06-13 | Biological effect electromagnet system |
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| CN101895215A true CN101895215A (en) | 2010-11-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935191A (en) * | 2014-11-27 | 2015-09-23 | 成都雷克尔科技有限公司 | Composite logic protection amplifying type mixed triggering power source for detecting power faults |
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| US20060258986A1 (en) * | 2005-02-11 | 2006-11-16 | Hunter Ian W | Controlled needle-free transport |
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2010
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|---|---|---|---|---|
| CN1086148A (en) * | 1992-10-30 | 1994-05-04 | 刘胜利 | The calutron that stimulating organism is used |
| US20060258986A1 (en) * | 2005-02-11 | 2006-11-16 | Hunter Ian W | Controlled needle-free transport |
| CN1815659A (en) * | 2006-01-19 | 2006-08-09 | 常熟开关制造有限公司(原常熟开关厂） | Electromagnet control device |
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| 《2006年安徽电力工业技术论坛论文集》 20061231 卢峭峰 555时基集成电路在失压自动保护装置中的应用 , 2 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104935191A (en) * | 2014-11-27 | 2015-09-23 | 成都雷克尔科技有限公司 | Composite logic protection amplifying type mixed triggering power source for detecting power faults |
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Application publication date: 20101124 |