CN103244000A - Cold storage door security control system - Google Patents
Cold storage door security control system Download PDFInfo
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- CN103244000A CN103244000A CN2012100267850A CN201210026785A CN103244000A CN 103244000 A CN103244000 A CN 103244000A CN 2012100267850 A CN2012100267850 A CN 2012100267850A CN 201210026785 A CN201210026785 A CN 201210026785A CN 103244000 A CN103244000 A CN 103244000A
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- circuit
- storage door
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- control system
- controller
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Abstract
The invention discloses a cold storage door security control system which is simple in structure, high in security, diversified in security detection and high in security detection sensitivity. The cold storage door mainly comprises a controller and a motor, wherein the motor drives the cold storage door to be opened or closed and is connected with a working power source through the controller, the controller comprises a power source end, a driving circuit and an operational circuit, wherein the power source end, the driving circuit and the operational circuit are sequentially connected, the operational circuit is connected with a current detection circuit for detecting the current of a frequency converter and a speed detection circuit for detecting the frequency of the frequency converter, and the current detection circuit and the speed detection circuit are respectively connected with the frequency converter of the motor.
Description
Technical field
The present invention relates to cold-storage door, be specifically related to a kind of cold-storage door safety control system.
Background technology
Present cold-storage door adopts hand push button to carry out the switch motion of cold-storage door mostly.Exist some potential safety hazards in the mode of cold-storage door by hand push button switch door.The speed that at first is the switch door is uncontrollable, if there is the staff to pass in and out freezer, so just the accident that the staff is crushed might take place in the process of closing the door; On the other hand, the emergency measure of common cold-storage door outage generally all is knob, when the people is trapped in the freezer, generally forces the action of opening the door by rotating urgent spanner; Because emergency knob has its application life, therefore need often it to be checked simultaneously.The product of our company mainly is at above 2 points in the design of secure context, avoids the generation of the accident that the staff is crushed in switch door process on the one hand; After having the people to be trapped in event in the freezer, trapped personnel can very easily be opened cold-storage door, and does not worry being trapped in the freezer on the other hand.
Summary of the invention
At above-mentioned the deficiencies in the prior art, purpose of the present invention aims to provide a kind of simple in structure, degree of safety is high, safety detection is diversified, safety detection is highly sensitive cold-storage door safety control system.
For solving the problems of the technologies described above, realize above-mentioned technique effect, the present invention adopts following technical scheme:
A kind of cold-storage door safety control system, mainly comprise controller and motor, the switch motion of described motor-driven cold-storage door, and by described controller connection working power, described controller comprises power end, drive circuit and the computing circuit that connects successively, described computing circuit is connected with for detection of the current detection circuit of inverter current with for detection of the velocity checking circuits of frequency converter frequency, and described current detection circuit and velocity checking circuits are connected the frequency converter of described motor respectively.
Cold-storage door safety control system of the present invention mainly comprises two functions:
One, pinch resistant functionality
1, the overcurrent judgement sandwiches function
When cold-storage door had object to be clamped, the electric current of the frequency converter of electrode increased, by the detection of current detection circuit, and the action of when increasing to the electric current of our setting, opening the door, thus prevent unexpected injury.
In the process of cold-storage door operation, cold-storage door safety control system of the present invention is the current electric current of monitoring in real time, and and the overcurrent parameter set compare, in case have the people to be clamped or the situation of motor rotation blockage will enter the action of opening the door automatically, thereby can avoid the injury that meets accident.
2, the slippage judgement sandwiches function
When cold-storage door in when operation, in case when having object to be clamped, the frequency of the frequency converter of the electrode of current operation will reduce, detection by velocity checking circuits, to a certain degree namely judge have object to be clamped when being reduced to, thereby cold-storage door is entered open the door action, thereby can avoid the injury that meets accident.
Two, power-off survival function
Cold-storage door safety control system of the present invention is when operate as normal, and controller can be guaranteed the operate as normal of cold-storage door by holding frequency.
After in case the situation of outage takes place, the maintenance function of frequency converter namely lost efficacy, though this moment cold-storage door still be in close the position, but but no longer include holding torque, if therefore have the staff to be trapped in the freezer, the staff can open cold-storage door easily, and needn't worry to be trapped in the freezer.
Compared with prior art, technical scheme of the present invention has following beneficial effect:
1) simple in structure
Compare with other controllers, adopt the cold-storage door of system of the present invention aspect security protection, not need to append again the safety that some other equipment guarantees the staff.The parameter that only need set controller anti-pinch aspect can be carried out highly sensitive anti-pinch detection.
2) degree of safety is higher
After power cut-off incident took place, general controller need be by the emergency knob action of opening the door, thereby avoids the staff to be trapped in the freezer.In order to ensure staff's safety, after outage, system of the present invention namely loses effectiveness to the control of motor, and the staff just can be easily draws back cold-storage door inside again like this, and does not worry being trapped in the freezer.
3) safety detection variation
The cold-storage door user can carry out dual safety detection by setting overcurrent and slippage according to the demand of oneself, thereby avoids occurring the situation that flase drop is surveyed.
4) safety detection is highly sensitive
The detection sensitivity of system of the present invention aspect anti-pinch is very high.In case judging has object to sandwich, the controller action of opening the door immediately, thus can effectively avoid the staff to crush.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of manual, below with preferred embodiment of the present invention and conjunction with figs. this patent is elaborated.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is systematic schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail.
Referring to shown in Figure 1, a kind of cold-storage door safety control system, mainly comprise controller 9 and motor 8, described motor 8 drives the switch motion of cold-storage door, and by described controller 9 connection working powers, described controller 9 comprises power end 1, drive circuit 3 and the computing circuit 3 that connects successively, described computing circuit 3 is connected with for detection of the current detection circuit 4 of inverter current with for detection of the velocity checking circuits 5 of frequency converter frequency, and described current detection circuit 4 and velocity checking circuits 5 are connected the frequency converter of described motor 8 respectively.
Further, described controller 9 also comprises I/O circuit 6, and described I/O circuit 6 connects described computing circuit 3.
Further, described controller 9 also comprises holding circuit 7, and described holding circuit 7 connects described computing circuit 3.
More than the embodiment of the invention is described in detail; for one of ordinary skill in the art; thought according to the embodiment of the invention; part in specific embodiments and applications all can change; in sum; this description should not be construed as limitation of the present invention, and all any changes of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (3)
1. cold-storage door safety control system, mainly comprise controller (9) and motor (8), described motor (8) drives the switch motion of cold-storage door, and by described controller (9) connection working power, it is characterized in that: described controller (9) comprises the power end (1) that connects successively, drive circuit (2) and computing circuit (3), described computing circuit (3) be connected with for detection of inverter current current detection circuit (4) and for detection of the velocity checking circuits (5) of frequency converter frequency, described current detection circuit (4) and velocity checking circuits (5) are connected the frequency converter of described motor (8) respectively.
2. cold-storage door safety control system according to claim 1, it is characterized in that: described controller (9) also comprises I/O circuit (6), described I/O circuit (6) connects described computing circuit (3).
3. cold-storage door safety control system according to claim 1 and 2, it is characterized in that: described controller (9) also comprises holding circuit (7), described holding circuit (7) connects described computing circuit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100267850A CN103244000A (en) | 2012-02-08 | 2012-02-08 | Cold storage door security control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100267850A CN103244000A (en) | 2012-02-08 | 2012-02-08 | Cold storage door security control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103244000A true CN103244000A (en) | 2013-08-14 |
Family
ID=48923843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100267850A Pending CN103244000A (en) | 2012-02-08 | 2012-02-08 | Cold storage door security control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103244000A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105320007A (en) * | 2015-05-23 | 2016-02-10 | 上海灵羽电子科技有限公司 | Integrated control method for controlling switching of cold storage door and integrated control system for controlling switching of cold storage door |
| CN108731218A (en) * | 2018-06-01 | 2018-11-02 | 珠海格力电器股份有限公司 | The control method of control system, air conditioner and air conditioner |
-
2012
- 2012-02-08 CN CN2012100267850A patent/CN103244000A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105320007A (en) * | 2015-05-23 | 2016-02-10 | 上海灵羽电子科技有限公司 | Integrated control method for controlling switching of cold storage door and integrated control system for controlling switching of cold storage door |
| CN108731218A (en) * | 2018-06-01 | 2018-11-02 | 珠海格力电器股份有限公司 | The control method of control system, air conditioner and air conditioner |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130814 |