CN110703644A - Special ns-level synchronous trigger device for numerical control equipment - Google Patents
Special ns-level synchronous trigger device for numerical control equipment Download PDFInfo
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- CN110703644A CN110703644A CN201910938886.7A CN201910938886A CN110703644A CN 110703644 A CN110703644 A CN 110703644A CN 201910938886 A CN201910938886 A CN 201910938886A CN 110703644 A CN110703644 A CN 110703644A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention discloses a special ns-level synchronous trigger device for numerical control equipment, which comprises: a semiconductor laser for generating a laser beam; the beam expanding system is used for adjusting the laser beam generated by the semiconductor laser into a parallel output beam; the photosensitive diode is used as a trigger switch and used for switching between on and off according to the change of the output light beam so as to realize the triggering of the numerical control equipment; wherein the beam expanding system is positioned between the semiconductor laser and the photodiode; the photosensitive diodes are arranged in multiple paths, and the multiple paths of photosensitive diodes are all in the irradiation range of the output light beams, so that the multiple paths of synchronous triggering are realized; the semiconductor laser conducts switching-on or switching-off of ns-level switching time according to changes of an electric signal input from the outside, the semiconductor laser generates the laser beam after being conducted, and the switching time between the conduction and the switching-off of the photosensitive diode is also in ns level, so that the triggering device can realize ns-level synchronous triggering.
Description
Technical Field
The invention relates to the field of triggering of numerical control equipment, in particular to a special ns-level synchronous triggering device for the numerical control equipment.
Background
With the development of science and technology, the numerical control technology is continuously advanced and matured, and higher requirements are put forward on a synchronous triggering system. In the development process of high-speed numerical control equipment, the synchronous transmission speed of signals is improved, and the method is of great importance to the development of the high-speed numerical control equipment. Most of the synchronous trigger devices on the market are in ms level, and the trigger source and the trigger output are in μ s level, so that the output of the whole synchronous trigger device can only reach ms level.
When the high-speed numerical control equipment works, the ms-level synchronous trigger device can not meet the production and technical requirements in many times, and the triggering speed seriously influences the working efficiency of the high-speed numerical control equipment.
Disclosure of Invention
Aiming at the problem that the existing synchronous trigger device cannot meet the requirement of high-speed numerical control equipment on high speed, the invention provides the special ns-level synchronous trigger device for the numerical control equipment, so that the trigger speed of the synchronous trigger device can reach nanosecond ns level, and the requirements of the high-speed numerical control equipment on speed and precision are met.
In order to realize the task, the invention adopts the following technical scheme:
an ns-level synchronous trigger device special for numerical control equipment comprises:
a semiconductor laser for generating a laser beam;
the beam expanding system is used for adjusting the laser beam generated by the semiconductor laser into a parallel output beam;
the photosensitive diode is used as a trigger switch and used for switching between on and off according to the change of the output light beam so as to realize the triggering of the numerical control equipment;
wherein the beam expanding system is positioned between the semiconductor laser and the photodiode; the photosensitive diodes are arranged in multiple paths, and the multiple paths of photosensitive diodes are all in the irradiation range of the output light beams, so that the multiple paths of synchronous triggering are realized; the semiconductor laser conducts switching-on or switching-off of ns-level switching time according to changes of an electric signal input from the outside, the semiconductor laser generates the laser beam after being conducted, and the switching time between the conduction and the switching-off of the photosensitive diode is also in ns level, so that the triggering device can realize ns-level synchronous triggering.
Furthermore, the number of the numerical control equipment is one or more;
when the numerical control equipment is one, each path of photosensitive diode is used for triggering one path of modules to be controlled in the numerical control equipment so as to realize synchronous triggering of multiple paths of modules to be controlled in the numerical control equipment;
when the numerical control equipment is multiple, each path of photosensitive diode is used for triggering one numerical control equipment so as to realize synchronous triggering of multiple paths of numerical control equipment.
Further, the beam expanding system comprises a first convex lens and a second convex lens, wherein the focal lengths of the first convex lens and the second convex lens are different.
Further, the external input electric signal is generated by the controller through the control signal generating circuit.
Further, the multiple photodiodes are located on the same plane perpendicular to the output light beam.
Compared with the prior art, the invention has the following technical characteristics:
the invention adopts a semiconductor laser and a photosensitive diode to form a synchronous triggering device, adds a beam expanding system, enlarges the light beam range, can simultaneously trigger multiple paths of photosensitive diodes and realizes high-sensitivity ns-level synchronous triggering.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a schematic diagram of the working principle of the apparatus of the present invention;
in the figure: 1 semiconductor laser, 2 beam expanding systems, 21 first convex lens, 22 second convex lens and 3 photosensitive diodes.
Detailed Description
The invention discloses a special ns-level synchronous trigger device for numerical control equipment, which comprises the following components as shown in figures 1 and 2:
a semiconductor laser 1 for generating a laser beam;
a beam expanding system 2 for adjusting the laser beam generated by the semiconductor laser 1 into a parallel output beam;
the photosensitive diode 3 is used as a trigger switch for switching between on and off according to the change of the output light beam so as to realize the trigger of the numerical control equipment;
wherein, the beam expanding system 2 is positioned between the semiconductor laser 1 and the photosensitive diode 3; the photosensitive diodes 3 are arranged in multiple paths, and the multiple paths of photosensitive diodes 3 are all in the irradiation range of the output light beams, so that the multiple paths of synchronous triggering are realized; the semiconductor laser 1 is switched on or off within ns-level switching time according to the change of an electric signal input from the outside, the semiconductor laser 1 generates the laser beam after being switched on, and the switching time between the on and off of the photosensitive diode 3 is also within ns level, so the triggering device can realize ns-level synchronous triggering.
In the embodiment of the invention, a laser beam emitted by a semiconductor laser 1 is used as a trigger light source, the on-off of the semiconductor laser 1 is controlled by an externally input electric signal, and the electric signal is used as a control signal of the semiconductor laser 1 to control the on-off of the semiconductor laser 1, so that the on-off of a photosensitive diode 3 is controlled, and the purpose of controlling the whole trigger device is achieved. After receiving the changed electric signal, the semiconductor laser 1 makes a response in time along with the electric signal within ns switching time between on and off to achieve the purpose of quick following; meanwhile, the light source signal of the semiconductor laser 1 is stable, the light source linearity is good, and a reliable light source is provided for the rapid synchronous conduction of the photosensitive diode 3. The control signal is generated by a controller control signal generating circuit, the signal generating circuit can be a PWM circuit for example, and an electric signal of an actual control requirement can be generated by programming according to the actual control requirement in the controller, so that the purpose of controlling the trigger device is achieved.
Optionally, the number of the numerical control devices is one or more; when the numerical control equipment is one, each path of the photodiode 3 is used for triggering one path of modules to be controlled in the numerical control equipment so as to realize synchronous triggering of multiple paths of modules to be controlled in the numerical control equipment; the module to be controlled is, for example, a plurality of parallel production lines in the numerical control device, and when the production lines need synchronous production, each production line can use one path of the photosensitive diode 3 as a trigger switch to realize synchronous control of the plurality of production lines. When the numerical control equipment is a plurality of, each path of photosensitive diode 3 is used for triggering one numerical control equipment so as to realize synchronous triggering of a plurality of paths of numerical control equipment.
In the invention, the laser emitted by the semiconductor laser 1 is a collimated thin cylindrical beam, and the actually required output beam has a certain width, so the beam expanding system 2 is added. A point light source on the focus of the convex lens is changed into a beam of parallel light after passing through the convex lens; when the incident light is a beam of parallel light, the incident light is focused on the focus of the convex lens after passing through the convex lens, and by utilizing the characteristic, the required beam expanding system 2 is formed by adopting two convex lenses with different focal lengths, the laser beam emitted by the semiconductor laser 1 is expanded, the diameter of the output light beam is enlarged, and the output light beam can be simultaneously irradiated on the multiple paths of photosensitive diodes 3; the multiple photosensitive diodes 3 are positioned on the same plane perpendicular to the output light beam, so that the aim of multiple synchronous triggering is accurately fulfilled.
Optionally, the beam expanding system 2 comprises a first convex lens 21 and a second convex lens 22, wherein the first convex lens 21 and the second convex lens 22 have different focal lengths. The light beam generated by the semiconductor laser 1 is converged at the focus through the first convex lens 21, and the light path is reversible, so that the light passing through the focus is refracted by the second convex lens 22 and then becomes a parallel output light beam; the diameter of the output beam is the diameter of the second convex lens 22. In the invention, the controlled multiple photosensitive diodes 3 are all in the irradiation range of the output light beam and can receive light signals simultaneously so as to realize synchronous triggering. The photodiode 3 is switched on after sensing the light signal and switched off after losing the light signal.
In the invention, the photosensitive diode 3 is used as output for synchronous triggering output, the laser beam after beam expansion can be changed into parallel output light beams, and the parallel light has the advantage that the time for irradiating different photosensitive diodes 3 is the same, so that synchronous triggering of each path of photosensitive diode 3 is realized. And the switching speed of the photosensitive diode 3 can be completed only in ns level, thereby greatly shortening the time required by triggering and accelerating the speed of the whole synchronous triggering device.
In the embodiment, an ns-level simultaneous triggering device is formed by an ns-level semiconductor laser 1 and an ns-level photosensitive diode 3, a beam expanding system 2 is added, the light beam range is enlarged, multiple paths of photosensitive diodes 3 can be triggered simultaneously, and high-sensitivity ns-level synchronous triggering is realized.
The working principle diagram of the device is shown in fig. 2, two paths of photosensitive diodes 3 are adopted in fig. 2, a light source of a semiconductor laser 1 passes through a beam expanding system 2 and then irradiates the two paths of photosensitive diodes 3 at the same time, and the two paths of photosensitive diodes 3 are conducted at the same time, so that ns-level synchronous multi-path triggering is realized.
The specific process is as follows: the semiconductor laser 1 obtains an electric signal input from the outside, the change of the electric signal can cause the change of current in the semiconductor laser 1, the on-off of laser of the semiconductor laser 1 is continuously switched according to the change of the electric signal, and the switching time of the semiconductor laser 1 between on and off is in ns level, so the semiconductor laser 1 can enter a working state in a very short time after receiving the electric signal, and the semiconductor laser 1 transmits a laser beam to the beam expanding system 2.
The beam expanding system 2 consists of a first convex lens 21 and a second convex lens 22 with different focal lengths on two surfaces, and the beam expanding system 2 expands the diameter of a parallel input light beam to a proper parallel output light beam; the laser beam of the semiconductor laser 1 enters the beam expanding system 2, firstly, the first level amplification is carried out on the thin and straight parallel light through the first convex lens 21, and then the laser beam is expanded to a proper parallel output beam through the second convex lens 22; the beam expanding system 2 outputs output light beams to the multiple photosensitive diodes 3, the photosensitive diodes 3 are positioned on the same horizontal plane, light source signals can be obtained simultaneously, the switching time of the photosensitive diodes 3 between on and off is also in ns level, the light beams irradiate on the two photosensitive diodes 3 simultaneously, the two photosensitive diodes 3 simultaneously and rapidly react, the two photosensitive diodes 3 are rapidly switched between on and off under the change of the output light beams of the beam expanding system 2, and the multi-path ns level synchronous triggering is realized.
All parts of the synchronous triggering device are completed within ns time, so that the whole device is ensured to work within ns time, high-sensitivity ns-level reliable synchronous triggering is realized, and the requirement of high-speed numerical control equipment on the rapidity of synchronous triggering output of all parts in high-speed operation is met.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (5)
1. An ns-level synchronous trigger device special for numerical control equipment is characterized by comprising:
a semiconductor laser (1) for generating a laser beam;
the beam expanding system (2) is used for adjusting the laser beam generated by the semiconductor laser (1) into a parallel output beam;
the photosensitive diode (3) is used as a trigger switch and used for switching between on and off according to the change of the output light beam so as to realize the triggering of the numerical control equipment;
wherein the beam expanding system (2) is located between the semiconductor laser (1) and the photodiode (3); the photosensitive diodes (3) are arranged in multiple paths, and the multiple paths of photosensitive diodes (3) are all in the irradiation range of the output light beams, so that the multiple paths of synchronous triggering are realized; the semiconductor laser (1) is switched on or off within ns-level switching time according to the change of an electric signal input from the outside, the semiconductor laser (1) generates the laser beam after being switched on, and the switching time between the on and off of the photosensitive diode (3) is also within ns level, so that the triggering device can realize ns-level synchronous triggering.
2. The ns-level synchronous trigger device special for the numerical control equipment as claimed in claim 1, wherein the number of the numerical control equipment is one or more;
when one numerical control device is used, each path of the photosensitive diode (3) is used for triggering one path of modules to be controlled in the numerical control device so as to realize synchronous triggering of multiple paths of modules to be controlled in the numerical control device;
when the numerical control equipment is multiple, each path of photosensitive diode (3) is used for triggering one numerical control equipment so as to realize synchronous triggering of multiple paths of numerical control equipment.
3. The ns-level synchronous triggering device special for the numerical control equipment as recited in claim 1, wherein the beam expanding system (2) comprises a first convex lens (21) and a second convex lens (22), wherein the focal lengths of the first convex lens (21) and the second convex lens (22) are different.
4. The ns-level synchronous trigger device special for the numerical control equipment as claimed in claim 1, wherein the external input electric signal is generated by a controller through a control signal generating circuit.
5. The ns-level synchronous trigger device special for the numerical control equipment as claimed in claim 1, characterized in that the multiple photodiodes (3) are positioned on the same plane perpendicular to the output light beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938886.7A CN110703644A (en) | 2019-09-30 | 2019-09-30 | Special ns-level synchronous trigger device for numerical control equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938886.7A CN110703644A (en) | 2019-09-30 | 2019-09-30 | Special ns-level synchronous trigger device for numerical control equipment |
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| CN110703644A true CN110703644A (en) | 2020-01-17 |
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| CN201910938886.7A Pending CN110703644A (en) | 2019-09-30 | 2019-09-30 | Special ns-level synchronous trigger device for numerical control equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5418807A (en) * | 1994-02-08 | 1995-05-23 | Chung; Hyung Dong | High power, high pulse repetition frequency, compact, pulsed laser diode driver |
| CN102929123A (en) * | 2012-11-14 | 2013-02-13 | 北京理工大学 | Measurement system for start time difference between high-speed light signal acquisition equipment and high-speed electric signal acquisition equipment |
| CN207408584U (en) * | 2017-04-18 | 2018-05-25 | 导装光电科技（深圳）有限公司 | Rangefinder based on LED light source |
| CN108075749A (en) * | 2017-12-19 | 2018-05-25 | 中国工程物理研究院流体物理研究所 | High pressure photoimpact thyristor and its Triggering Control System and its trigger control method |
| CN208139423U (en) * | 2017-12-22 | 2018-11-23 | 上海科华光电技术研究所 | Gas treatment equipment containing particulate matter |
-
2019
- 2019-09-30 CN CN201910938886.7A patent/CN110703644A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5418807A (en) * | 1994-02-08 | 1995-05-23 | Chung; Hyung Dong | High power, high pulse repetition frequency, compact, pulsed laser diode driver |
| CN102929123A (en) * | 2012-11-14 | 2013-02-13 | 北京理工大学 | Measurement system for start time difference between high-speed light signal acquisition equipment and high-speed electric signal acquisition equipment |
| CN207408584U (en) * | 2017-04-18 | 2018-05-25 | 导装光电科技（深圳）有限公司 | Rangefinder based on LED light source |
| CN108075749A (en) * | 2017-12-19 | 2018-05-25 | 中国工程物理研究院流体物理研究所 | High pressure photoimpact thyristor and its Triggering Control System and its trigger control method |
| CN208139423U (en) * | 2017-12-22 | 2018-11-23 | 上海科华光电技术研究所 | Gas treatment equipment containing particulate matter |
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Application publication date: 20200117 |