CN204386335U - A kind of door machine control system based on frequency converter and one-stroke switch - Google Patents
A kind of door machine control system based on frequency converter and one-stroke switch Download PDFInfo
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- CN204386335U CN204386335U CN201420588981.1U CN201420588981U CN204386335U CN 204386335 U CN204386335 U CN 204386335U CN 201420588981 U CN201420588981 U CN 201420588981U CN 204386335 U CN204386335 U CN 204386335U
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- door
- frequency converter
- enabling
- travel switch
- machine control
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Abstract
The utility model discloses a kind of door machine control system based on frequency converter and one-stroke switch, be made up of controller, frequency converter, motor and an enabling travel switch, described enabling travel switch correspond to enabling stop position, and enabling travel switch is connected with controller, controller connects motor by frequency converter.This machine control system eliminates traditional encoder, decreases the mechanical parts such as traditional travel switch, reduce the cost that these parts bring on the one hand, it also avoid the potential faults that these parts bring on the other hand, improve reliability, reduce system maintenance; This system obviates the shortcoming of traditional approach, also reach the control accuracy of traditional approach.
Description
Technical field
The utility model relates to one in a big way, specifically a kind of door machine control system based on frequency converter and one-stroke switch.
Background technology
1. a machine brief introduction
Along with the development of science and technology, the progress of electron trade and automation field, modern door is not that just traditional switch gate is such.The application on door such as electronic equipment, has developed the door that a variety of difference controls.In our city, in mansion, hotel, hotel, bank, market, automatic door is all seen everywhere.Automatic door not only to we bring personnel pass in and out conveniently, save air conditioner energy source, windproof, dust-proof, reduce the benefits such as noise, also add the breath of many elegants to door.
Automatic door understands the extension of the concept that be door theoretically, is a development and improvement carried out according to the needs of function.Automatic door refers to: can be the control unit of enabling signal close to the action recognition of door by people, be opened by door, automatically closed by door after people leaves by drive system, and to the system that the process implementation opened and closed controls.The kind of automatic door is a lot, and structural shape is different, but its basic structure mainly contains three parts, i.e. door body door frame portion, driving and running part, control and sensor detecting portion.These three parts also can be divided into 5 fraction compositions, are respectively inductor, controller, motor, guide rail and door body.
1, the present great majority of inductor are microwave sensors, are equivalent to a radar, when neighbouring have an object of which movement time, it just sends signal to controller.
2, controller is generally the microcomputer adopting PLC programming, and we can be regulated by controller and open the door, speed at closing time.Controller also can adopt single-chip microcomputer etc.
3, controller controls the running of motor, ascending motion or the descending motion of motor by there being the belt of tooth to be connected drive door with door body.
4, door body is visited and is connected with hanging piece, hanging piece has a pulley, and door body also can be slided on guide rail by the pulley jib on hanging piece.Guide rail is fixed on crossbeam, and crossbeam is connected with the body of wall on both sides is firm.
5, the gravity of door has a body to support.
2. a machine course of work
The operating principle of automatic door: in time having enabling signal to issue system, system performs motion of opening the door, and door up and down or left and right is opened.Door when being opened to top, stops opening the door, and then keeps current state constant.After time delay a period of time, door automatically performs door close commands, closes the door downwards.When door is closed to the bottom of door downwards, stop closing the door, keep current state constant.Perform at door system in the process of door close commands, when infrared signal has sensed people's process time, stop current door close commands.Then perform door opening command, open the door when top, stop enabling, after then keeping current state a period of time, automatically perform door close commands.
When outside to system to close gate signal time, no matter what state is current system be in, and system all performs motion of closing the door, and door is closed downwards.When door is closed to the bottom of door downwards, stop closing the door, keep current state constant.
Door is when performing enabling or door close commands, and when there is stop signal outside to system time, system stops current running status, keeps motionless.In time again receiving outside enabling or close gate signal, door just starts new action.This is the operation logic of a simple door.
3. conventional door machine control mode
The control principle of automatic door unit middle controller is different, generally has the automatic door of following two kinds of different control modes.Be respectively: A. is based on the mode of encoder pulse number; B. based on the mode of stroke inductive switch.
3.A is according to the mode of encoder pulse number
With the door machine control system of encoder, be to carry out switch gate judgement according to the umber of pulse of encoder.As can be seen from Fig. 1 and Fig. 2, according to the door machine control system of the mode of encoder pulse number, be made up of controller 1, frequency converter 2, encoder 3 and motor M; This system provides four encoder values point positions, is respectively enabling deceleration point A1, enabling extreme position B1, close the door deceleration point A2 and the extreme position B2 that closes the door.
When system has outside door opening command, system is accelerated frequency to open the door and is performed door opening state, and up and down or left and right is opened the door.When the value of encoder arrives the position of enabling deceleration point of presetting, system changes the speed in frequency when button fly front, opens the door with deceleration frequency, when the value to encoder is increased to enabling extreme position, stops opening the door, and keeps current state constant, band-type brake.
When system has outside door close commands, system is accelerated frequency to close the door and is closed the door, and closes the door downwards.When the value of encoder is reduced to the position of deceleration point of closing the door, system changes current speed in frequency of closing the door, and closes the door with deceleration frequency, and the value of encoder reduces.When the value of encoder be reduced to close the door extreme position time, stop closing the door, keep current state constant.
Due to encoder, the switch gate motion process of door mechanism system can be divided into several parts, move.The operational reliability of the door mechanism system that such mode can be is high, good stability.The door machine that the occasion that Generally Recognized as safe coefficient is high adopts this control mode to design is many.Certainly owing to adding encoder, too increase the cost that door mechanism system manufactures, in some reliabilities, poor a little some occasions of stability just do not need such design simultaneously.Make door-inverter in this way have on the market: Shen water chestnut door machine, easily rise door machine, Panasonic's door machine etc.
3.B is according to the mode of stroke inductive switch:
Refer to Fig. 3 and Fig. 4, according to the door machine control system of stroke inductive switch, be made up of controller 1, frequency converter 2, motor M and four travel switches, four travel switches are respectively: the first enabling travel switch C1 and the second enabling travel switch C2 that correspond to enabling stop position, correspond to stop position of closing the door and the first travel switch D1 and second that closes the door to close the door travel switch D2.These four travel switches, correspond to four running statuses in system switching door process.
When there is enabling signal outside, system performs door opening command.During beginning, system is accelerated frequency to open the door and is carried out door opening action.In time running into the first enabling travel switch C1, system changes current speed of service frequency, and the low speed frequency that changes to open the door runs.In time touching the second enabling travel switch C2, stop door opening command.Keep current state constant, band-type brake.
When outside relevant gate signal, system performs door close commands.System is accelerated frequency to close the door and is carried out door opening action.When touch first close the door travel switch D1 time, system change current close the door run speed in frequency, to open the door, low speed frequency carries out closing the door action.When touch second close the door travel switch D2 time, stop door close commands.Keep current state constant.
This kind of door-inverter system, high relative to the door mechanism system reliability with encoder, but very flexible, not easily adjust.Owing to adopting four travel switches, cost is not low yet.The door mechanism system applying this kind of method on the market has: easily rise door-inverter, Panasonic's door-inverter etc.
As can be seen from above, although the door mechanism system precision with encoder is high.But owing to have employed encoder, so the cost of this kind of door mechanism system also improves accordingly.And use the door mechanism system of travel switch to open the door owing to adopting four strokes, so cause cost to increase.
Utility model content
The purpose of this utility model is to provide a kind of door machine control system based on frequency converter and one-stroke switch, the advantage that this system makes full use of frequency converter estimates the position when Qianmen, remove encoder and reduce the mechanical parts such as travel switch, reduce cost, improve reliability, reduce system maintenance, thus solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of door machine control system based on frequency converter and one-stroke switch, be made up of controller, frequency converter, motor and an enabling travel switch, described enabling travel switch correspond to enabling stop position, and enabling travel switch is connected with controller, and controller connects motor by frequency converter.
Compared with prior art, the beneficial effects of the utility model are: this machine control system eliminates traditional encoder, decreases the mechanical parts such as traditional travel switch, reduce the cost that these parts bring on the one hand, it also avoid the potential faults that these parts bring on the other hand, improve reliability, reduce system maintenance; This system obviates the shortcoming of traditional approach, also reach the control accuracy of traditional approach.
Accompanying drawing explanation
Fig. 1 is the structural representation of the door machine control system of mode according to encoder pulse number;
Fig. 2 is the control principle drawing of the door machine control system of mode according to encoder pulse number;
Fig. 3 is the structured flowchart of the door machine control system according to stroke inductive switch;
Fig. 4 is the control principle drawing of the door machine control system according to stroke inductive switch;
Fig. 5 is the structured flowchart of the door machine control system based on frequency converter and one-stroke switch;
Fig. 6 is the control principle drawing of the door machine control system based on frequency converter and one-stroke switch.
Detailed description of the invention
Be described in more detail below in conjunction with the technical scheme of detailed description of the invention to this patent.
Refer to Fig. 5 and Fig. 6, a kind of door machine control system based on frequency converter and one-stroke switch, be made up of controller 1, frequency converter 2, motor M and an enabling travel switch C, described enabling travel switch C correspond to enabling stop position, and enabling travel switch C is connected with controller 1, controller 1 connects motor M by frequency converter 2.
Operating principle of the present utility model is as follows:
Assuming that an its lowermost position is 0, uppermost position is L, then, when door moves upward from 0, door seat in the plane is set to:
.When door runs downwards from L, door seat in the plane is set to:
, wherein
-Men current location;
-running time;
-motor running frequency.
As can be seen here, as long as find motor running frequency more accurately
, just can estimate current position of going out.For this reason, utilize the slip compensate function of frequency converter, the frequency after using slip to compensate, can obtain motor current operation frequency well, thus carry out position estimation.
The position estimation of described frequency converter to realize principle as follows:
Frequency in frequency converter after 1 millisecond or several millisecond or other suitable sampling time sampling frequency converter slip compensation
, then carry out accumulation calculating
, thus obtain current location.
Due to estimation inevitable deviation, may depart from after longtime running with actual conditions, therefore design correction mechanism, retain the top travel switch of conventional door machine, each door machine corrects through this trip switch,
; Wherein
for correction coefficient,
,
for known travel switch position.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, can also makes a variety of changes under the prerequisite not departing from this patent aim.
Claims (1)
1. the door machine control system based on frequency converter and one-stroke switch, it is characterized in that, be made up of controller, frequency converter, motor and an enabling travel switch, described enabling travel switch correspond to enabling stop position, and enabling travel switch is connected with controller, controller connects motor by frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420588981.1U CN204386335U (en) | 2014-10-13 | 2014-10-13 | A kind of door machine control system based on frequency converter and one-stroke switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420588981.1U CN204386335U (en) | 2014-10-13 | 2014-10-13 | A kind of door machine control system based on frequency converter and one-stroke switch |
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| Publication Number | Publication Date |
|---|---|
| CN204386335U true CN204386335U (en) | 2015-06-10 |
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| CN201420588981.1U Active CN204386335U (en) | 2014-10-13 | 2014-10-13 | A kind of door machine control system based on frequency converter and one-stroke switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507733A (en) * | 2016-01-05 | 2016-04-20 | 天津职业技术师范大学 | Automatic door control device |
-
2014
- 2014-10-13 CN CN201420588981.1U patent/CN204386335U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507733A (en) * | 2016-01-05 | 2016-04-20 | 天津职业技术师范大学 | Automatic door control device |
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