CN1063380A - Laser Power Devices - Google Patents
Laser Power Devices Download PDFInfo
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- CN1063380A CN1063380A CN 91100352 CN91100352A CN1063380A CN 1063380 A CN1063380 A CN 1063380A CN 91100352 CN91100352 CN 91100352 CN 91100352 A CN91100352 A CN 91100352A CN 1063380 A CN1063380 A CN 1063380A
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Abstract
The high frequency single-end ortho-exciting contravariant 5WCO that the present invention is made up of several sections such as regulating circuit, inversion power amplifier booster circuits
2Laser Power Devices.It is suitable for doing the power supply in individual and the hospital's usefulness laser therapeutical machine.Because the present invention has adopted 100KHz high-frequency inversion method, and power volume is dwindled, and is in light weight, cost descends; Power supply has high anti-network fluctuation and fluctuation of load ability, and power output is stable also can regulate continuously, and the linearity is good, and adjustable range is wide.The inversion frequency height.
The present invention is applicable to the CO below 0.3 meter
2Laser and the He-Ne laser below 1.5 meters.
Description
The invention belongs to the power supply of medical machinery.
At present, laser therapeutical machine is in developing a kind of new type medical equipment, and kind is a lot.But with regard to its circuit construction of electric power, then be the same basically, as with 220 couchers frequently voltage after step-up transformer boosts, through high-voltage capacitance twice or three multiplication of voltages, make voltage be raised to CO again
2The starting voltage of laser, by the external characteristic of current-limiting resistance acquisition decline, thereby transformer (being called coarse adjustment) is regulated in the working point of stable laser, regulates secondary resistance (being called fine tuning).The laser medical device that laser machine factory of aigret island company of Chinese science computer center produces, its circuit construction of electric power just belongs to above-mentioned described type.The shortcoming of this circuit is more:
1. anti-network voltage fluctuation poor ability when networking voltage is lower than 220 volts, needs external power supply;
2. owing to there is not feedback loop, the ability of anti-load variations is relatively poor, so, the laser output power poor stability;
3. employing duplex frequency boostering transformer, multiplication of voltage electric capacity, the power volume that current-limiting resistance is formed is huge, and weight increases, the cost height;
4. the active power that consumes on current-limiting resistance is bigger, makes the conversion efficiency of power supply low;
5. current-limiting resistance is in work under the febrile state for a long time, is easy to damage, and power source life is shortened.
In view of above problem, at present a lot of people are to little merit rule CO
2Laser power supply has carried out a series of research, as " being used for the high voltage and constant current controller properties analysis of gas laser power supply " (being published in 1987 the 8th volume the 6th phases " laser magazine ").This is a kind of by radio tube, the operating characteristic of the high-voltage constant current source that transistor and operational amplifier constitute.The shortcoming of this structure is; Adopt duplex frequency boostering transformer, capacitance voltage-multiplying and the current-limiting resistance that seals in certain numerical value, radio tube, transistor, bulky, gain in weight the cost height; Because of vacuum tube and transistor are in the amplification operating state, consumed energy and caloric value are all very big, and the conversion efficiency of electric current is low; This circuit requires very high to element, the scope of anti-networking fluctuation is not wide, and power source life is not long.Therefore, the power supply of this type only is used for the Ne-Ne laser tube, is not used for CO as yet
2In the laser tube.
Be published in " the transless pulse wide modulation type gas laser power supply " of 1986 the 6th volumes on the 2nd phase " application laser " magazine, it is domesticly first the high-frequency inversion stabilized voltage power supply to be used for laser.Also there is following shortcoming in it: because of reverse frequency lower, volume of transformer and weight are also big, can not remove the current-limiting resistance and the hv filtering resistance of high voltage secondary end fully, have influenced the raising of the conversion efficiency of complete machine, caloric value is big, so in the machine electric fan must be installed; Anti-network voltage fluctuation range is little, adopts the pulse-width regulated electric current, makes adjustable range narrow, therefore also is not used for production.
5WCO provided by the present invention
2Laser Power Devices have overcome the shortcoming of power supply described in the above prior art.
Chief component of the present invention is divided into main circuit and control circuit two large divisions.Main circuit is by regulating circuit, energy storage rectifier circuit, and inversion power amplifier booster circuit is formed.Control circuit produces circuit by the 100KHZ rectangular pulse, drive circuit, and detector 1,2 is formed (seeing accompanying drawing 1,2)
Regulating circuit is by controllable silicon, and set-point circuit, trigger impulse produce circuit and phase-shift circuit is formed, and its function is to regulate laser output power.Energy storage rectifier circuit is by rectifier bridge, inductance H
1Form with the high frequency noninductive capacitor, its function is that interchange is changed into behind the direct current to capacitor charging energy storage, after the high-power high-frequency switch transistor turns, discharges to transformer rapidly.Inversion power amplifier and booster circuit are by the high-power high-frequency switch transistor T, step-up transformer B
2, inductance H
2, H
3Capacitor C, HF switch diode D forms.High-power switching transistor produces the rectangular pulse electric current of f=100KHZ, and voltage is sent into transformer and boosted the back to CO
2Laser provides operating current and voltage, H
2, C and D form degausser, improve the operating efficiency of transformer, simultaneously H
2Can also limit the rate of climb of electric current, to reduce the switching tube conducting energy consumption of moment.Inductance H
3And be to make the reliable rapidly judgement of T pipe between base stage and emitter.Pulse-generating circuit produces f=100KHZ rectangle square-wave pulse, after drive circuit amplifies, drives high-power high-frequency switch pipe T.Detector 1,2 is monitored the variation of networking voltage and load, the stable laser working point respectively from networking input and laser discharge loop negate feedback signal.Regulator potentiometer R
21And R
10Can change the size of the feedback signal of the feedback signal of networking voltage and laser discharge loop respectively.Regulator potentiometer R
27But thereby stepless continuous is regulated the size that the laser works electric current is regulated laser output power.R
12Be thermistor, play temperature compensation function.
Power supply of the present invention is by regulating circuit (1), energy storage rectifier circuit (2), inversion power amplifier booster circuit (3,4), the 100KHZ rectangular pulse produces circuit (5), drive circuit (6), detector 1(7), detector 2(8), reach laser tube (9) and form (referring to Fig. 1).
The present invention includes regulating circuit, energy storage rectifier circuit, inversion power amplifier booster circuit, detector 1, detector 2.
Fig. 2, a kind of connection of the regulating circuit of expression invention.Element 1 joins with the positive pole of element 2, one end of the positive pole of element 4 and element 3 joins, the negative pole and the ground wire of element 2 join, first pin of the other end of element 3 and element 9 joins, the crus secunda of element 9 and element 8 join, one end of element 10 and the positive pole of element 11 join, element 8,10 the other end and ground wire join, one end of the negative pole of element 11 and element 12 joins, the tripod of the other end of element 12 and element 33 joins, the negative pole of element 4 and element 5,13,20 join, an end of 25 and the octal of element 31 join, one end of the other end of element 5 and element 6 and the positive pole of element 14 join, the tripod of the other end of element 6 and element 9 and an end of element 7 join, element 7,13 the other end and ground wire join, the 7th pin of the negative pole of element 14 and element 30 and an end of element 15 join, the 6th pin of the other end of element 15 and element 30, element 17 joins, the other end of element 17 and element 19,20, an end of 32 joins, the 5th pin of element 30 and element 16, an end of 18 joins, element 18,19 the other end and ground wire join, first pin of the other end of element 16 and element 30, one end of element 21 joins, the crus secunda of the other end of element 21 and element 30, one end of element 23 joins, the other end of element 23 and element 31 join, and the tripod of element 30 and an end of element 22,24 join, the other end of element 24 and element 27, an end of 28 joins, and an end of element 28 and an end of element 29 join element 22,29 the other end and ground wire join, element 27 joins with an end of element 26, and the other end of the other end of element 26 and element 25 joins.
The another kind of connection of regulating circuit is among Fig. 2, changes the wiring of element 16 and first pin of element 30 into element 16 and joins with the 2nd pin of element 30 and an end of element 24.
The 3rd of regulating circuit the kind of connection is that positive pole and element 5,6 phase connections with element 14 positive pole that changes element 14 into and the 3rd pin and the element 6,7 of element 9 join among Fig. 2.
The 4th of regulating circuit the kind of connection is that the 2nd kind of connection and the 3rd kind of connection are used simultaneously among Fig. 2.
Fig. 3 is a kind of winding diagram of rectification circuit.Element 37 joins with an end of element 36, the other end of element 36 and element 35, an end of 39 joins, the crus secunda of the other end of element 35 and element 33 and ground join, first pin of element 33 and the crus secunda and the ground wire of element 37 join, the 4th pin of element 37 and an end of element 38 join, the tripod of element 37, and the other end of element 38 and 220 volts of networking power supplys join.
Second kind of connection of Fig. 3 joins the 1st pin of element 36 and element 37 and crus secunda and ground wire that an end phase connection of element 35 changes element 36 and element 37 into join, and first pin of the other end and element 33 joins.
The third connection of Fig. 3, first pin of element 37 and an end of element 35 are joined, the other end of element 35 joins with an end of seat ground and element 36, and the tripod of the other end of element 36 and element 33 joins, and the crus secunda and the ground wire of the crus secunda of element 33 and element 37 join.
Fig. 4 is a kind of winding diagram of inversion power amplifier booster circuit.An elementary end of transformer 39 and an end of element 40 join, first pin of the other end of element 40 and element 41, element 43, an end of 44 joins, and the 2nd pin of element 41 and an end of element 45 join, and an end of element 41 tripods and element 42 joins, element 42,43,44,45 the other end and ground wire join.A secondary end of element 39 and the positive pole of element 47 join, and an end of the negative pole of element 47 and element 46 joins, and the other end and the ground wire of the other end of element 46 and 39 levels of element join.
Second kind of connection of Fig. 4 is to insert a diode 48 again between the end with first pin of element 41 and element 40,43,44, and connection is that first pin with the negative pole of element 48 and element 41 joins, and an end of the positive pole of element 48 and element 40,43,44 joins.
Fig. 5 is a kind of winding diagram of detector 1, and a termination of element 51 is gone into element 37, and the other end of element 51 inserts an end of element 2,49,50, and the other end and the ground wire of element 50,49 join.
Second kind of connection of detector 1, an end and the element 37 of element 51 join, and an end of the other end of element 51 and element 50,32 joins, and an end of the other end of element 32 and element 49 joins, and the other end and the ground wire of element 50,49 join.
Fig. 7 is a kind of winding diagram of detector circuit.One end of element 52 and first pin of element 31 join, and an end of the crus secunda of element 31 and element 54 joins, and the tripod of element 31 and the other end and the ground wire of element 54 join.
Second kind of connection surveying inspection device circuit is to insert an adjustable resistance between the crus secunda of element 31 and element 54 1 ends.
Fig. 1 is the power circuit block diagram.
Fig. 2 is a regulating circuit.Among the figure the 1,12,16,3,8,5,6,15,17,18,19,20,21,22,23,24,28,29,25,26, the 27th, resistance, the 2,11,33, the 4th, diode, the 10,7, the 13rd, electric capacity, the 30th, triode.
Fig. 3 is an energy storage rectifier circuit.
Fig. 4 is an inversion power amplifier booster circuit.
Fig. 5 is a detector 1.
Fig. 6 is the circuit that the another kind of connection of detector 1 is represented.
Fig. 7 is a detector 2.
The advantage of this invention: (1) has removed high-voltage filtering capacitor and the resistance of high-pressure side owing to adopt 100KHZ high-frequency inversion means, makes the volume of power supply, and weight descends significantly, and cost is low. (2) detector 1,2 when networking voltage fluctuates in 160 volts～250 volts scopes, makes power supply can work the Output of laser power stability so that power supply anti-networking fluctuation and fluctuation of load ability are strong. (3) removed the current-limiting resistance of high-pressure side, made the energy loss decrease, the conversion efficiency of overall current improves more than 75%, has prolonged simultaneously the working life of power supply. (4) adopt voltage regulating mode, laser output power 0～5W is regulated continuously, peak power output can reach 8W, and the linearity is good, adjustable range is wide. (5) 5WCO that assembles with this power supply2The stream time of laser therapeutical machine can prolong arbitrarily according to client need. (6) the present invention is suitable for individual or hospital application.
This invention circuit construction of electric power is applicable to the CO below 0.3 meter2Laser instrument and the He-Ne laser instrument below 1.5 meters. As with the high-power high-frequency switch transistor T (see photo) in the inversion power amplifier, change parallel great power high frequency switching transistor group into, can be with the CO below 0.4 meter2Laser instrument, power output can be brought up to 15W.
Claims (6)
1, a kind of high frequency single-end ortho-exciting contravariant Laser Power Devices is characterized in that this power supply mainly by regulating circuit, energy storage rectifier circuit, inversion power amplifier booster circuit, rectangular pulse circuit, drive circuit, detector 1 and 2, and laser tube is formed.
2, according to the described Laser Power Devices of claim 1, it is characterized in that, element 1 and element 2 positive pole join, one end of the positive pole of element 4 and element 3 joins, the negative pole of element 2 joins with ground, first pin of the other end of element 3 and element 9 joins, the 2nd pin and the element 8 of element 9 join, one end of element 10 and the positive pole of element 11 join, element 8,10 the other end joins with ground, one end of the negative pole of element 11 and element 12 joins, the other end of element 12 joins with ground, one end of the negative pole of element 11 and element 12 joins, the 3rd pin of the other end of element 12 and element 33 joins, the negative pole of element 4 and element 5,13,20 join, one end of element 25 and the 8th pin of element 31 join, one end of the other end of element 5 and element 6 and the positive pole of element 14 join, the 3rd pin of the other end of element 6 and element 9, one end of element 7 joins, element 7,13 the other end joins with ground, the 7th pin of the negative pole of element 14 and element 30, one end of element 15 joins, the 6th pin of the other end of element 15 and element 30, element 17 joins, the other end of element 17 and element 19,20, an end of 32 joins, the 5th pin of element 30 and element 16, an end of 18 joins, element 18,19 the other end joins with ground, the 1st pin of the other end of element 16 and element 30, one end of element 21 joins, the 2nd pin of the other end of element 21 and element 30, one end of element 23 joins, the other end of element 23 and element 31 join, the 3rd pin of element 30 and element 22, an end of 24 joins, the other end of element 24 and element 27, an end of 28 joins, one end of the other end of element 28 and element 29 joins, element 22,29 the other end joins with ground, element 27 joins with an end of element 26, and the other end of the other end of element 26 and element 25 joins.
3, laser circuit according to claim 1, an end that it is characterized in that element 37 and 36 joins, one end of the other end of element 36 and element 35,39 joins, the 2nd pin of the other end of element 35 and element 33 joins with ground, the 2nd pin of element 33 and the 2nd pin of element 37, join, the 4th pin of element 37 and an end of element 38 join, the 3rd pin of element 37, and the other end of element 38 and networking voltage join.
4, laser circuit according to claim 1, it is characterized in that an elementary end of transformer 39 and an end of element 40 join, 40 the other end and 41 the 1st pin, element 43, an end of 44 joins, and the 2nd pin of element 41 and an end of element 45 join, and the 3rd pin of 41 and an end of 42 join, 42,43,44,45 the other end joins with ground, 39 secondary positive level with 47 is joined, and 47 negative pole and an end of 46 join, 46 the other end and 39 secondary, join.
5, laser circuit according to claim 1 is characterized in that, an end and 37 of element 51 joins, 51 the other end and 52,49, and an end of 50 joins, and 50,49 the other end joins with ground.
6, laser circuit according to claim 1 is characterized in that an end of element 52 and 31 the 1st pin join, and the 2nd pin of element 31 and an end of 54 join, 31 the 3rd pin and 54 the other end, join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91100352 CN1030519C (en) | 1991-01-16 | 1991-01-16 | Laser electric power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91100352 CN1030519C (en) | 1991-01-16 | 1991-01-16 | Laser electric power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1063380A true CN1063380A (en) | 1992-08-05 |
| CN1030519C CN1030519C (en) | 1995-12-13 |
Family
ID=4904573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91100352 Expired - Fee Related CN1030519C (en) | 1991-01-16 | 1991-01-16 | Laser electric power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030519C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098978A (en) * | 2020-09-14 | 2020-12-18 | 哈工大机器人（合肥）国际创新研究院 | System and method for improving on-state speed of TOF camera laser and reducing driving power consumption |
-
1991
- 1991-01-16 CN CN 91100352 patent/CN1030519C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098978A (en) * | 2020-09-14 | 2020-12-18 | 哈工大机器人（合肥）国际创新研究院 | System and method for improving on-state speed of TOF camera laser and reducing driving power consumption |
| CN112098978B (en) * | 2020-09-14 | 2024-03-26 | 哈工大机器人（合肥）国际创新研究院 | System and method for improving turn-on speed of TOF camera laser and reducing driving power consumption |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1030519C (en) | 1995-12-13 |
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