CN1423379A - Laser power source of semiconductor pumping laser mark printer - Google Patents
Laser power source of semiconductor pumping laser mark printer Download PDFInfo
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- CN1423379A CN1423379A CN 01130062 CN01130062A CN1423379A CN 1423379 A CN1423379 A CN 1423379A CN 01130062 CN01130062 CN 01130062 CN 01130062 A CN01130062 A CN 01130062A CN 1423379 A CN1423379 A CN 1423379A
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- laser
- circuit
- mosfet pipe
- mosfet
- drive circuit
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Abstract
A laser power source of semiconductor pump laser labelling machine includes master power and control circuit, assistant power source, semiconductor pump laser, buffer circuit and three MOSFWT tubes, in which the load connects in series between MOS tubes (1,2), switch power links the drain of MOS tube (1) and source of MOS tube (2), the control circuit adjusts the gate voltage of MOS tube (1) by buffer circuit and drive circuit and adjusts MOS tube (2) gate voltage by output control and drive circuit d to realize voltage and current to be adjusted continuously at both ends of the load. This invention applies current inner ring control to turn the load current variation to that of MOS gate voltage b sensor to further control current flowing through the load.
Description
Technical field
The present invention relates to the Laser Power Devices technology, in particular for the Laser Power Devices of semiconductor pumping laser mark machine.
Background technology
Current, the pumping machine of domestic laser marking machine mainly adopts krypton lamp, carries out mark by sending continuous laser.Its efficient of this energisation mode is very low, and energy greatly has been wasted, and the life-span of lamp is very short.
Summary of the invention
A kind of Laser Power Devices that are specifically designed to the semiconductor pumping laser mark machine have been the object of the present invention is to provide, it is by the continuous laser of electric excitation output to the high power semi-conductor diode, to dwindle the volume of Laser Power Devices, cut down the consumption of energy, improve the efficient of Laser Power Devices.
The Laser Power Devices of this semiconductor pumping laser mark machine comprise: main power source and control circuit, auxiliary switching power supply, semiconductor pump laser, slow circuit and three the MOSFET pipes etc. of powering on.Described semiconductor pump laser (being load) is serially connected between the MOSFET pipe (1,2), auxiliary switching power supply is connected on the drain electrode of MOSFET pipe (1) and the source electrode of MOSFET pipe (2), and three groups of independent current sources of main power source are respectively to the isolated drive circuit of three MOSFET pipes and the Hall element power supply that is used to detect load current.
Control circuit is by slow the powering on of gate source voltage realization of slow power on circuit and isolated drive circuit (c) adjusting MOSFET pipe (1), and control circuit realizes that by the gate source voltage of exporting control and isolated drive circuit (d) adjusting MOSFET pipe (2) voltage and current at load two ends is adjustable continuously; MOSFET pipe (3) is connected across the two ends of auxiliary switching power supply, if anomaly is arranged, then MOSFET (3) conducting is cut off the electricity supply, and makes it be in guard mode.
Current inner loop control is adopted in Laser Power Devices output control of the present invention, and load is serially connected in the centre of two MOSFET pipes, by Hall element load current is become the variation that MOSFET manages the gate source voltage of (2), and then control flows is through the electric current of load.Be provided with the two ends that protective circuit MOSFET pipe (3) is attempted by auxiliary switching power supply,, can fast the auxiliary switching power supply electricity be pulled off and enter guard mode as anomaly takes place.Have advantages such as efficient height, energy consumption is low, physical efficiency is little, power is big.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present invention;
Fig. 2 is an enforcement circuit diagram of the present invention.
Embodiment
The present invention will be described below in conjunction with accompanying drawing.
Laser Power Devices shown in Figure 1, mainly comprise: main power source and control circuit, auxiliary switching power supply, semiconductor pump laser (being load), three MOSFET pipes, be connected the slow circuit that powers on, isolated drive circuit between control circuit and MOSFET pipe (1) grid, be connected output control and isolated drive circuit between control circuit and MOSFET pipe (2) grid.Main power source becomes the 220V alternating current of input into several groups of independence main power sources, these several groups of main power sources are supplied with the drive circuit of MOSFET pipe 1,2,3, give the Hall element power supply of load simultaneously, produce feedback voltage the gate source voltage of MOSFET pipe 2 is controlled, and then the electric current and the voltage of control output.In addition, semiconductor laser must carry out water-cooled, once cut off the water supply or water temperature too high, its disconnected protection water device can cut off main circuit immediately and protect laser.
In implementing circuit diagram 2, Fig. 2 b major loop mainly is made up of three MOSFET pipes, load and protection relays.Control circuit (Fig. 2 a) isolate by the voltage of major loop is taken a sample after, after comparing with normal voltage, produce overvoltage/undervoltage signal and over-current signal, as do not have anomaly to take place, circuit can operate as normal, if any unusually, power supply will be cut off.In addition, if hydraulic pressure is arranged, water temperature is reported to the police, power supply also will be cut off, and elementary time-delay is made up of timer and trigger, by resistance R electrical level judging be carried out in the charging of capacitor C, after trigger triggers as the signal of power initiation, back level time-delay is that capacitor C realizes by resistance R mainly, and the gate source voltage of MOSFET pipe 1 rises gradually, realizes the slow electric control of going up.Control circuit is not limited to the circuit of Fig. 2, also can adopt existing other circuit to realize.For guaranteeing control precision, control circuit employing ± 15V power supply because power circuit adopts the common technology of knowing in the sector, is not described in detail this part circuit in Fig. 2.
Fig. 2 c, d, e are respectively the isolated drive circuits of MOSFET pipe 1,2,3, wherein the drive signal of MOSFET pipe 1 is followed by slow power on signal and is isolated and get, and MOSFET manages 1 isolated drive circuit (c) and contains follower and the light driver for isolating that one-level is made up of amplifier U5A etc.The isolated drive circuit (d) of MOSFET pipe 2 is made of two-stage amplifier, follower and light driver for isolating successively, and the signal of MOSFET pipe 2 is that signal subtraction that the value determined by potentiometer and Hall element feed back amplifies and isolates and get.The signal of MOSFET pipe 3 comes from the overcurrent comparator output terminal of control circuit; it mainly is made up of one-level light driver for isolating; MOSFET pipe 3 is connected across the two ends of auxiliary switching power supply; take place if any overcurrent; MOSFET manages 3 conductings, and auxiliary switching power supply is pulled off, and cuts off main rapidly; the protection laser is not subjected to big impact, just can restart power supply after only resetting.
Claims (3)
1, a kind of Laser Power Devices of semiconductor pumping laser mark machine comprise main power source and control circuit, auxiliary switching power supply, semiconductor pump laser and the slow circuit that powers on, and it is characterized in that:
Also comprise three MOSFET pipes, described semiconductor pump laser (being load) is serially connected between the MOSFET pipe (1,2), auxiliary switching power supply is connected on the drain electrode of MOSFET pipe (1) and the source electrode of MOSFET pipe (2), and three groups of independent current sources of main power source are respectively to the isolated drive circuit of described three MOSFET pipes and the Hall element power supply that is used to detect load current;
Control circuit is by slow the powering on of gate source voltage realization of slow power on circuit and isolated drive circuit (c) adjusting MOSFET pipe (1), and control circuit realizes that by the gate source voltage of exporting control and isolated drive circuit (d) adjusting MOSFET pipe (2) voltage and current at load two ends is adjustable continuously;
MOSFET pipe (3) is connected across the two ends of auxiliary switching power supply, if anomaly is arranged, then MOSFET (3) conducting is cut off the electricity supply, and makes it be in guard mode.
2, according to the Laser Power Devices of the described semiconductor pumping laser mark machine of claim 1, it is characterized in that: the isolated drive circuit (c) of described MOSFET pipe (1) is made of follower and the light driver for isolating that amplifier U5A constitutes one-level.
3, according to the Laser Power Devices of the described semiconductor pumping laser mark machine of claim 1, it is characterized in that: the isolated drive circuit (d) of described MOSFET pipe (2) is made of the two-stage amplifier, follower and the light driver for isolating that connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01130062 CN1271759C (en) | 2001-12-06 | 2001-12-06 | Laser power source of semiconductor pumping laser mark printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01130062 CN1271759C (en) | 2001-12-06 | 2001-12-06 | Laser power source of semiconductor pumping laser mark printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1423379A true CN1423379A (en) | 2003-06-11 |
| CN1271759C CN1271759C (en) | 2006-08-23 |
Family
ID=4669693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01130062 Expired - Fee Related CN1271759C (en) | 2001-12-06 | 2001-12-06 | Laser power source of semiconductor pumping laser mark printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1271759C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201642A (en) * | 2011-04-20 | 2011-09-28 | 深圳市大族激光科技股份有限公司 | Method for protecting pumping source of optical device |
| CN102916332A (en) * | 2012-11-01 | 2013-02-06 | 中国科学院半导体研究所 | Auxiliary power supply circuit of laser power supply |
| CN103701033A (en) * | 2013-11-26 | 2014-04-02 | 上海华魏光纤传感技术有限公司 | Work protection system for DFB (distributed feed back) laser |
| CN104913810A (en) * | 2014-03-12 | 2015-09-16 | 大族激光科技产业集团股份有限公司 | Single-chip microcomputer-based laser marking machine operation monitoring device |
| CN105226488A (en) * | 2015-11-20 | 2016-01-06 | 深圳市创鑫激光股份有限公司 | A kind of drive circuit for laser |
| CN107666291A (en) * | 2017-09-07 | 2018-02-06 | 沈阳铁路信号有限责任公司 | Train TWC system power amplifiers guard method and protection circuit |
| CN112003607A (en) * | 2020-07-07 | 2020-11-27 | 珠海凯邦电机制造有限公司 | Motor control drive circuit with Hall sensor and motor |
| CN113036588A (en) * | 2021-03-12 | 2021-06-25 | 深圳市星汉激光科技股份有限公司 | Semiconductor laser pumping source driving current dynamic adjusting system |
-
2001
- 2001-12-06 CN CN 01130062 patent/CN1271759C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201642A (en) * | 2011-04-20 | 2011-09-28 | 深圳市大族激光科技股份有限公司 | Method for protecting pumping source of optical device |
| CN102916332A (en) * | 2012-11-01 | 2013-02-06 | 中国科学院半导体研究所 | Auxiliary power supply circuit of laser power supply |
| CN103701033A (en) * | 2013-11-26 | 2014-04-02 | 上海华魏光纤传感技术有限公司 | Work protection system for DFB (distributed feed back) laser |
| CN104913810A (en) * | 2014-03-12 | 2015-09-16 | 大族激光科技产业集团股份有限公司 | Single-chip microcomputer-based laser marking machine operation monitoring device |
| CN104913810B (en) * | 2014-03-12 | 2017-08-22 | 大族激光科技产业集团股份有限公司 | A kind of SCM Based laser marking machine running monitor device |
| CN105226488A (en) * | 2015-11-20 | 2016-01-06 | 深圳市创鑫激光股份有限公司 | A kind of drive circuit for laser |
| CN105226488B (en) * | 2015-11-20 | 2016-06-15 | 深圳市创鑫激光股份有限公司 | A kind of drive circuit for laser |
| CN107666291A (en) * | 2017-09-07 | 2018-02-06 | 沈阳铁路信号有限责任公司 | Train TWC system power amplifiers guard method and protection circuit |
| CN107666291B (en) * | 2017-09-07 | 2021-08-24 | 沈阳铁路信号有限责任公司 | Train TWC system power amplifier protection method and protection circuit |
| CN112003607A (en) * | 2020-07-07 | 2020-11-27 | 珠海凯邦电机制造有限公司 | Motor control drive circuit with Hall sensor and motor |
| CN113036588A (en) * | 2021-03-12 | 2021-06-25 | 深圳市星汉激光科技股份有限公司 | Semiconductor laser pumping source driving current dynamic adjusting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1271759C (en) | 2006-08-23 |
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| C14 | Grant of patent or utility model | ||
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Address after: 518051 Dazu laser building, 9 new West Road, North Nanshan District high tech park, Shenzhen, Guangdong Patentee after: HANS LASER TECHNOLOGY INDUSTRY GROUP CO., LTD. Address before: 518031, building 405, 3 Yan Nan Road, Shenzhen, Guangdong, Futian District Patentee before: Dazu Laser Sci. & Tech. Co., Ltd., Shenzhen |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060823 Termination date: 20201206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |