CN201681277U - Electric control system of curtain type shutter - Google Patents
Electric control system of curtain type shutter Download PDFInfo
- Publication number
- CN201681277U CN201681277U CN2010201885921U CN201020188592U CN201681277U CN 201681277 U CN201681277 U CN 201681277U CN 2010201885921 U CN2010201885921 U CN 2010201885921U CN 201020188592 U CN201020188592 U CN 201020188592U CN 201681277 U CN201681277 U CN 201681277U
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- CN
- China
- Prior art keywords
- curtain
- control system
- shutter
- chip microcomputer
- unit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Exposure Control For Cameras (AREA)
Abstract
The utility model provides an electric control system of a curtain type shutter, including a singlechip for scheduling and controlling the system, a drive unit for driving the curtain to open and close, a detection unit for detecting whether the curtain is unfolded well or not, and a communication unit for obtaining filming parameters; the drive unit, the detection unit and the communication unit are connected with the singlechip respectively. The electric control system has advantages of flexible control, high reliability, accurate exposure and strong spreading capability.
Description
Technical field
The utility model relates to a kind of shutter control system, relates in particular to a kind of electronic control system of curtain shutter.
Background technology
Shutter is sense of control ray film or the device of sensor effective exposure time on the camera, makes the sensitization position obtain correct exposure, thereby makes the object in static and the motion obtain image clearly.Curtain shutter is little, shock-resistant according to its inertia, flexibility is little and good reliability, long characteristics of life-span still are widely used.
The curtain of shutter is by a series of steel discs, front and back curtain electromagnet and control circuit, and curtain discharges mechanical switch, curtain expansion lever combines with the form of double-lever mechanism.Traditional control method is: the front and back curtain is respectively under the effect of front and back curtain lever, promote first contact by manual activity machinery, finish the expansion and the superimposed action of curtain, act on second contact by manual activity again and be used on the structure release, at last the mistiming that lowers the curtain by curtain before and after the automatically controlled method control curtain.Above-mentioned way is said to a great extent, is that electronic system is auxiliary mode based on mechanical manual, and imaging each time all will depend on artificial participation.
For at present just at some flourish science type cameras, particularly with the load camera or be applied to the mankind can't near or during the working environment that enters, the conventional manual mode is adopted in the control assembly inconvenience of camera exposure, and must adopt complete automatically controlled mode to handle, be badly in need of the automatically controlled shutter of curtain-type that a control is flexible, reliability is high, the life-span is long and can provide reliable guarantee for such camera.
The utility model content
In order to solve the above-mentioned technical matters that exists in the background technology, the utility model provides a kind of and has controlled flexibly, reliability is high, can accurately expose and the electronic control system of the curtain shutter that extended capability is strong.
Technical solution of the present utility model is:
A kind of electronic control system of curtain shutter, its special character is: the electronic control system of described curtain shutter comprises driver element that system carries out the single-chip microcomputer of observing and controlling scheduling and control, the expansion and the release of curtain is driven, curtain is launched whether to put in place detecting unit that detects and the communication unit that obtains acquisition parameters; Described driver element, detecting unit and communication unit link to each other with single-chip microcomputer respectively.
The electronic control system of above-mentioned curtain shutter also comprises the photometry unit of gathering the ambient light signal of taking a picture; Described photometry unit links to each other with single-chip microcomputer.
The utility model has the advantages that:
1, control flexibly.The utility model is the control system that a kind of brand-new mode based on electronics is controlled focal shutter, in use, the complete mistiming that lowers the curtain by the electronic circuit control curtain shutter, so that in the solution background technology load camera or be applied to the mankind can't near or during the working environment that enters, the technical matters of conventional manual mode is adopted in the control assembly inconvenience of camera exposure, controls very flexible.
2, reliability height can accurately expose.The utility model makes the reliability of camera strengthen, accurately expose.
3, extended capability is strong.Satisfy the interface requirement of many airborne equipments, this system and miscellaneous equipment are affiliated to simultaneously in big system, receive steering order, this curtain control system based on singlechip technology can be carried out the function expansion, for the further exploitation of camera function leaves the space, expanded the range of application of curtain shutter.
Description of drawings
Fig. 1 is the electronic control system structural framing synoptic diagram of curtain shutter provided by the utility model;
Fig. 2 is the electronic control system preferred construction synoptic diagram of curtain shutter provided by the utility model.
Embodiment
Referring to Fig. 1, the utility model provides a kind of electronic control system of curtain shutter, and this system comprises single-chip microcomputer 1, driver element 3, detecting unit 2, photometry unit 4 and communication unit 5; Driver element 3, detecting unit 2, photometry unit 4 and communication unit 5 link to each other with single-chip microcomputer 1 respectively.It is the parameter that receives curtain open command and curtain action that the electronic control system of curtain shutter provided by the utility model mainly acts on, and controlling and driving curtain associated components is according to the instruction action, simultaneously by communication unit passback curtain current state.
Wherein:
Single-chip microcomputer 1 is used for scheduling and the control that system carries out observing and controlling, mainly the unit such as status monitoring that are converted to the interface conversion unit of RS-485 bus interface, the expansion of curtain, superimposed driver element, curtain by the RS-422 serial line interface are formed, by writing inner executive routine, realization is exported the steering order of corresponding control assembly to the response of external command.
The utility model is by the realization of the RS422 serial communication in the communication unit 5 and the observing and controlling of outer computer, the course of work of single-chip microcomputer 1 is described below: the data message that has the camera running parameter obtains by communication unit 5, single-chip microcomputer 1 is resolved according to communication protocol, the validity of judgment data, the order format that the verification msg content is up to specification, think that these data are effective, after the specific coding of each effective order of instruction set is deciphered, select the pairing passage of different coding, corresponding passage is carried out switch command, the designated command of output is loaded on the control element through over-drive unit 3, realizes the folding control of curtain.
Communication unit 5 is used to connect computing machine and electronic control system provided by the utility model, to electronic control system sending controling instruction, controlled variable, receives the shutter state, and this communication unit 5 is connected with single-chip microcomputer 1, is used for the RS422 serial communication of system.Communication unit 5 is serial line interface cables, the RS422 interface cable that this serial line interface cable is a standard, an end connects computing machine, and the other end is connected to the electronic control system of curtain shutter, be used for communicating by letter of system and external information, realize the transmission of curtain steering order and curtain state.
Detecting unit 2 mainly is that the curtain expansion state of putting in place was detected so that the better controlled control front and back superimposed mistiming of curtain.
Driver element 3 mainly is expansion and superimposed driving the to the control curtain, and comprises that curtain launches control circuit, the superimposed circuit of mechanical switch control of curtain and the superimposed control circuit of curtain, has motor-driven, solenoid actuated and curtain to drive, wherein:
Curtain launches control circuit to be made up of direct current motor, control signal interface circuit and motor-drive circuit, is used for system's control curtain unfolded part and finishes the expansion function, comprises put in place the detection of state detection circuit of curtain expansion.
The superimposed circuit of mechanical switch control of curtain is made up of electromagnet, control signal interface circuit and solenoid driver circuit, is used for the control to the superimposed rod controller spare electromagnet of focal shutter.
The superimposed control circuit of curtain is made up of electromagnet, control signal interface circuit and solenoid driver circuit, the superimposed mistiming of curtain before and after being used to control.
Photometry unit 4 is mainly used in gathers the ambient light signal of taking a picture, and convert corresponding electric signal to, convert 8 bit digital quantity to by the A/D converter unit again, offer single-chip microcomputer, calculate the time shutter according to current photo environment, when the camera running parameter is under the state of auto exposure mode, can offer the superimposed control circuit controlled variable of curtain.
Referring to Fig. 2, the utility model is after system powers on, single-chip microcomputer 1 receives the parameter instruction of taking pictures by communication unit 5, and instruct parsing, information such as obtain exposure mode, time shutter, shooting interval and start shooting, when parsing by communication unit 5, single-chip microcomputer 1 starts shooting signal, curtain unfolding circuits in 1 pair of driver element 3 of single-chip microcomputer sends control signal, make and launch the rotation of driven by motor expansion push rod, launch fully up to curtain, trigger microswitch simultaneously, detect curtain by detecting unit 2 and whether launch to finish, and notice single-chip microcomputer 1, the output motor stop signal.The superimposed circuit of mechanical switch control of curtain in single-chip microcomputer 1 control drive unit 3 then, promote the superimposed release lever of shutter, the superimposed control signal of output curtain, realization is to the control of the superimposed circuit of curtain in the driver element, the release of curtain has the regular hour poor before and after making, and curtain is superimposed with certain logical optical width before and after both having made, and there are two kinds of obtain manners the front and back curtain mistiming wherein: one is manual intervention, be loaded in the acquisition parameters by serial ports, obtain by command analysis; Another kind is by photometry unit 4, through the conversion of light signal to electric signal, amplifies, and single-chip microcomputer 1 is read in the A/D conversion, by calculating the time shutter, again to the superimposed circuit output of curtain in the driver element 3 control signal corresponding.Finish single exposure.Twice mistiming was resolved according to the serial parameter command by single-chip microcomputer 1 and obtains before and after curtain launched to move.
Claims (2)
1. the electronic control system of a curtain shutter is characterized in that: the electronic control system of described curtain shutter comprises driver element that system carries out the single-chip microcomputer of observing and controlling scheduling and control, the expansion and the release of curtain is driven, curtain is launched whether to put in place detecting unit that detects and the communication unit that obtains acquisition parameters; Described driver element, detecting unit and communication unit link to each other with single-chip microcomputer respectively.
2. the electronic control system of curtain shutter according to claim 7 is characterized in that: the electronic control system of described curtain shutter also comprises the photometry unit of gathering the ambient light signal of taking a picture; Described photometry unit links to each other with single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201885921U CN201681277U (en) | 2010-05-13 | 2010-05-13 | Electric control system of curtain type shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201885921U CN201681277U (en) | 2010-05-13 | 2010-05-13 | Electric control system of curtain type shutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201681277U true CN201681277U (en) | 2010-12-22 |
Family
ID=43346314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201885921U Expired - Fee Related CN201681277U (en) | 2010-05-13 | 2010-05-13 | Electric control system of curtain type shutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201681277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244738A (en) * | 2010-05-13 | 2011-11-16 | 中国科学院西安光学精密机械研究所 | Electric control method and system for curtain type shutter |
-
2010
- 2010-05-13 CN CN2010201885921U patent/CN201681277U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244738A (en) * | 2010-05-13 | 2011-11-16 | 中国科学院西安光学精密机械研究所 | Electric control method and system for curtain type shutter |
| CN102244738B (en) * | 2010-05-13 | 2013-11-06 | 中国科学院西安光学精密机械研究所 | Electric control method and system for curtain type shutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20150513 |
|
| EXPY | Termination of patent right or utility model |