CN105092498A - Control device for double-beam ultraviolet and visible spectrophotometer - Google Patents
Control device for double-beam ultraviolet and visible spectrophotometer Download PDFInfo
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- CN105092498A CN105092498A CN201510593293.3A CN201510593293A CN105092498A CN 105092498 A CN105092498 A CN 105092498A CN 201510593293 A CN201510593293 A CN 201510593293A CN 105092498 A CN105092498 A CN 105092498A
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Abstract
The invention provides a control device for a double-beam ultraviolet and visible spectrophotometer. The control device comprises an MCU master control module, a scanning motor driving module, a slit motor driving module, a beam splitter motor driving module, a light filter motor driving module, an automatic sample cell motor driving module, a light source switching motor driving module and a data acquisition module, wherein the scanning motor driving module, the slit motor driving module, the beam splitter motor driving module, the light filter motor driving module, the automatic sample cell motor driving module and the light source switching motor driving module are respectively connected with the MCU master control module through I/O ports, and the data acquisition module is connected with the MCU master control module through an RS232 interface. The control device for the double-beam ultraviolet and visible spectrophotometer has the advantages of improving the sample scanning speed and the speed of communication with an upper computer and greatly improving the wavelength scanning accuracy.
Description
Technical field
The invention belongs to analysis classes Instrument Control Technology field, especially relate to a kind of control device for twin-beam ultraviolet-visible pectrophotometer.
Background technology
The most of ultraviolet-visible pectrophotometer of Present Domestic all adopts 51 single-chip microcomputers as main control MCU, and 51 single-chip microcomputers are 8 machines, under being generally operational in 12MHz frequency.Bit wide is narrow, and travelling speed is slow, and the sweep velocity for sample is slow; Adopt RS232 with host computer communication interface, traffic rate reaches as high as 57600kbps, and speed is lower; Scan module many employings two-phase or four phase motors, segmentation uses, and step angle is comparatively large, and segmentation rear stability is poor, and scanning accuracy is low.
Summary of the invention
The object of this invention is to provide a kind of control device for twin-beam ultraviolet-visible pectrophotometer, the sweep velocity that improve sample and the speed communicated with host computer, and scanning wavelength precision improves greatly.
Technical scheme of the present invention is: a kind of control device for twin-beam ultraviolet-visible pectrophotometer, comprise MCU main control module, scan module driver module, slit motor driver module, beam splitter motor drive module, optical filter motor drive module, automatic sample pond motor drive module, light source switch motor driver module and data acquisition module, described scan module driver module, slit motor driver module, beam splitter motor drive module, optical filter motor drive module, automatic sample pond motor drive module is connected with MCU main control module respectively by I/O mouth with light source switch motor driver module, described data acquisition module is connected with MCU main control module by RS232 interface.
Further, also comprise host computer, described host computer is connected with host computer by USB interface.
Further, described data acquisition module comprises signal and arranges unit and A/D converting unit, and described signal is arranged unit and is connected with MCU main control module with RS232 interface by A/D converting unit.
Further, described MCU main control module adopts master chip to be STM32.
The advantage that the present invention has and good effect are: owing to adopting technique scheme, the present invention adopts the ARM chip of current popular as main control MCU, and work dominant frequency can reach 72MHz, bit wide 32, run processing speed and greatly improve; Communicate with host computer employing USB interface, and traffic rate can reach 12MHz; Scan module adopts 5 phase 10 line stepper motors, and step angle 0.72 degree, does not segment, and greatly improves scanning wavelength precision.
Accompanying drawing explanation
Fig. 1 is structural principle block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
Shown in structural principle block diagram as of the present invention in Fig. 1, a kind of control device for twin-beam ultraviolet-visible pectrophotometer of the present invention, comprise MCU main control module, scan module driver module, slit motor driver module, beam splitter motor drive module, optical filter motor drive module, automatic sample pond motor drive module, light source switch motor driver module and data acquisition module, described scan module driver module, slit motor driver module, beam splitter motor drive module, optical filter motor drive module, automatic sample pond motor drive module is connected with MCU main control module respectively by I/O mouth with light source switch motor driver module, described data acquisition module is connected with MCU main control module by RS232 interface.
Also comprise host computer, described host computer is connected with host computer by USB interface.
Described data acquisition module comprises signal and arranges unit and A/D converting unit, and described signal is arranged unit and is connected with MCU main control module with RS232 interface by A/D converting unit.
Described MCU main control module adopts master chip to be STM32.
The course of work of this example: MCU main control module adopts current more advanced ARM chip (STM32 of ST company), and this chip is CORTEX-M3ARM kernel, work dominant frequency can reach 72MHz, bit wide 32, runs processing speed and greatly improves; Communicate with host computer employing USB interface, and traffic rate can reach 12MHz; Scan module adopts 5 phase 10 line stepper motors, and step angle 0.72 degree, does not segment, and greatly improves scanning wavelength precision travelling speed fast; I/O mouth speed can reach 50MHz, and the efficiency of operation peripheral hardware is high.
Scan module driver module, adopts 5 phase 10 line stepper motor drivers, and drive 5 phase 10 line stepper motors, step angle 0.72 degree, does not segment, greatly improve precision and stability.Slit motor driver module, adopts 22 phase 6 line stepper motor drivers, drives two stepper motors to realize into seam and the conversion going out seam.Beam splitter motor drive module, adopts 3 phase 4 line driving stepper motor modules, realizes beam splitter and stablize controlled rotation.Optical filter motor drive module, adopt 2 phase 4 line driving stepper motor modules, drive motor realizes the switching of optical filter.Automatic sample pond motor drive module, adopts 2 phase 4 line driving stepper motor modules, drives sample cell to switch, realizes the automatic switchover of sample.Light source switch motor driver module, adopts 2 phase 4 line driving stepper motor modules, drives catoptron to rotate, realizes the switching of deuterium lamp and tungsten lamp.
Data acquisition module, arranges unit by signal and amplifies the signal gathered, by A/D converting unit, convert analog voltage signal to digital signal, by RS232 interface, pass to MCU main control module.MCU main control module, by USB interface, realizes communicating with host computer, data acquisition.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (4)
1. the control device for twin-beam ultraviolet-visible pectrophotometer, it is characterized in that: comprise MCU main control module, scan module driver module, slit motor driver module, beam splitter motor drive module, optical filter motor drive module, automatic sample pond motor drive module, light source switch motor driver module and data acquisition module, described scan module driver module, slit motor driver module, beam splitter motor drive module, optical filter motor drive module, automatic sample pond motor drive module is connected with MCU main control module respectively by I/O mouth with light source switch motor driver module, described data acquisition module is connected with MCU main control module by RS232 interface.
2. the control device for twin-beam ultraviolet-visible pectrophotometer according to claim 1, is characterized in that: also comprise host computer, and described host computer is connected with host computer by USB interface.
3. the control device for twin-beam ultraviolet-visible pectrophotometer according to claim 1, it is characterized in that: described data acquisition module comprises signal and arranges unit and A/D converting unit, described signal is arranged unit and is connected with MCU main control module with RS232 interface by A/D converting unit.
4. the control device for twin-beam ultraviolet-visible pectrophotometer according to claim 1, is characterized in that: described MCU main control module adopts master chip to be STM32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510593293.3A CN105092498A (en) | 2015-09-17 | 2015-09-17 | Control device for double-beam ultraviolet and visible spectrophotometer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510593293.3A CN105092498A (en) | 2015-09-17 | 2015-09-17 | Control device for double-beam ultraviolet and visible spectrophotometer |
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| CN105092498A true CN105092498A (en) | 2015-11-25 |
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| CN201510593293.3A Pending CN105092498A (en) | 2015-09-17 | 2015-09-17 | Control device for double-beam ultraviolet and visible spectrophotometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355822A (en) * | 2022-01-17 | 2022-04-15 | 上海天美科学仪器有限公司 | Advanced general type photometer control system |
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| CN201656957U (en) * | 2010-03-23 | 2010-11-24 | 上海凤凰光学科仪有限公司 | Current-mode AD converter circuit of spectrophotometer |
| CN201837456U (en) * | 2010-09-01 | 2011-05-18 | 北京普源精电科技有限公司 | Spectrophotometer |
| CN201917562U (en) * | 2010-12-14 | 2011-08-03 | 北京清博华科技有限公司 | Light path structure of visible ultraviolet light detector |
| CN102346069A (en) * | 2010-07-29 | 2012-02-08 | 江苏天瑞仪器股份有限公司 | Ultraviolet-visible detector monochromator |
| CN202421053U (en) * | 2011-09-30 | 2012-09-05 | 上海理工大学 | Device for testing variable frequency efficiency of ultraviolet sensing enhanced film |
| CN205175903U (en) * | 2015-09-17 | 2016-04-20 | 天津港东科技发展股份有限公司 | A controlling means for dualbeam ultra violet and visible spectrophotometer |
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2015
- 2015-09-17 CN CN201510593293.3A patent/CN105092498A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065523A (en) * | 1991-03-29 | 1992-10-21 | 株式会社岛津制作所 | Spectrophotometer |
| CN101871923A (en) * | 2009-04-22 | 2010-10-27 | 北京普源精仪科技有限责任公司 | Liquid phase measurement device |
| CN201656957U (en) * | 2010-03-23 | 2010-11-24 | 上海凤凰光学科仪有限公司 | Current-mode AD converter circuit of spectrophotometer |
| CN102346069A (en) * | 2010-07-29 | 2012-02-08 | 江苏天瑞仪器股份有限公司 | Ultraviolet-visible detector monochromator |
| CN201837456U (en) * | 2010-09-01 | 2011-05-18 | 北京普源精电科技有限公司 | Spectrophotometer |
| CN201917562U (en) * | 2010-12-14 | 2011-08-03 | 北京清博华科技有限公司 | Light path structure of visible ultraviolet light detector |
| CN202421053U (en) * | 2011-09-30 | 2012-09-05 | 上海理工大学 | Device for testing variable frequency efficiency of ultraviolet sensing enhanced film |
| CN205175903U (en) * | 2015-09-17 | 2016-04-20 | 天津港东科技发展股份有限公司 | A controlling means for dualbeam ultra violet and visible spectrophotometer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355822A (en) * | 2022-01-17 | 2022-04-15 | 上海天美科学仪器有限公司 | Advanced general type photometer control system |
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Application publication date: 20151125 |
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