CN202445626U - Display cabinet controller - Google Patents
Display cabinet controller Download PDFInfo
- Publication number
- CN202445626U CN202445626U CN2011205376728U CN201120537672U CN202445626U CN 202445626 U CN202445626 U CN 202445626U CN 2011205376728 U CN2011205376728 U CN 2011205376728U CN 201120537672 U CN201120537672 U CN 201120537672U CN 202445626 U CN202445626 U CN 202445626U
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- CN
- China
- Prior art keywords
- mcu
- relay
- signal
- showcase
- temperature sensor
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- Expired - Lifetime
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Abstract
The utility model relates to a display cabinet controller which comprises a temperature sensor arranged in a display cabinet; the temperature sensor is used for sending acquired temperature signals into a micro-programmed control unit (MCU); the MCU is used for comparing the temperature signals with the preset value, and then outputting a refrigeration signal into a work circuit of a refrigeration relay; the MCU is also connected with a clock module which is used for sending the current time into the MCU; and a work circuit of a defrosting relay, a work circuit of a fan relay, a control circuit of a lighting relay and a work circuit of an anti-dew relay are started by the MCU at the fixed time. After the technical scheme is adopted, omnibearing control is provided for the display cabinet.
Description
Technical field
The utility model relates to a kind of controller that is applied in showcase in the supermarket.
Background technology
Showcase in the supermarket, the control measure that in general all have no can not be effectively controlled when causing the showcase extremes of temperature like this, and when frosting in the showcase is too serious, can not in time handles, thereby influence refrigerating efficiency.In addition, local dewfall easily such as the edge of showcase if can not effectively control, is prone to cause security incident.
The utility model content
The purpose of the utility model provides a kind of have comprehensive control and safe showcase controller.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
The utility model comprises the temperature sensor that is positioned at showcase, and temperature sensor is sent into the temperature signal that collects among the MCU, and MCU compares temperature signal and preset value, and relatively back output refrigeration signal is to the relay work loop of freezing;
MCU also connects clock module, and clock module will be sent into MCU the current time, MCU time opening defrosting relay work loop, blower fan relay work loop, illumination relay control loop and the anti-relay work loop of revealing.
Too high or too low when temperature signal, when perhaps the temperature sensor no signal was exported, then the MCU output alarm signal was to warning circuit.
Described MCU connects the button detection module, and the button detection module is sent triggering signal into MCU, MCU output open command to illumination relay control loop.
Described MCU is as master controller, and this master controller is connected with at least one slave controller through communication module.
Adopt the utility model of technique scheme, for showcase provides omnibearing control, can control refrigeration simultaneously, defrosting is reported to the police, lamp in the cabinet, and the outer lamp of cabinet, blower fan, defrosting is output synchronously, the anti-heater strip etc. that reveals.Controller has real-time clock, can be used for defrosting, light, the control of fan speed regulation equal time.Adopt RS485 industry-standard protocol and digital thermometer communication, can guarantee the reliability of communication effectively.
Description of drawings
Fig. 1 is the whole theory diagram of the utility model.
Fig. 2 is the schematic diagram that master controller is connected with the slave controller communication in the utility model.
The specific embodiment
As shown in Figure 1, the utility model comprises the temperature sensor that is positioned at showcase, and temperature sensor is sent into the temperature signal that collects among the MCU, and MCU compares temperature signal and preset value, and relatively back output refrigeration signal is to the relay work loop of freezing; Simultaneously, MCU also connects clock module, and clock module will be sent into MCU the current time, MCU time opening defrosting relay work loop, blower fan relay work loop, illumination relay control loop and the anti-relay work loop of revealing.
Below specify:
1, temperature control: MCU obtains Current Temperatures through temperature sensor, compares with the design temperature of storing in the MCU peripheral data memory module, if greater than design temperature, then MCU control refrigeration relay closes starts compressor and freezes; If less than design temperature, then MCU control refrigeration relay breaks off, thereby comes close compressor to stop refrigeration.In addition, the utility model can also increase alarm module.MCU compares through calculating according to the data that temperature sensor transmitted; Judge whether to reach alert if, if reach, display module display alarm symbol; Control remote alarms output through control remote alarms relay, break off and the closure output of reporting to the police through the control buzzer.In addition, when the temperature sensor no signal is exported, then MCU also output alarm signal to warning circuit.
2, defrosting: behind the evaporimeter frosting, influence refrigerating efficiency, can pass through the regular time point, perhaps regular hour section, perhaps triggering such as external signal defrosts.Can adopt set time point defrosting and set time section defrosting dual mode this moment: wherein; Set time point defrosting is meant that MCU passes through clock module and obtains the current time; Compare with the set time point of storing in the data memory module; If the arrival defrosting time, then MCU defrosts through control defrosting relay closes; Set time section defrosting is meant that MCU passes through recording compressed machine running time, if running time greater than the setting running time in the data memory module, then MCU defrosts through control defrosting relay closes.
3, blower fan control: MCU is the fan condition parameter during according to setting-up time section and defrosting, controls the fan operation state through the state of controlling two groups of blower fan relays.
4, illumination control: be divided into by key control and time period control dual mode.Wherein, be meant that MCU connects the button detection module by key control; MCU judges that through the button detection module whether button press; Press if judged lamp control button,, carry out switch and brightness through the state of controlling the lamp relay then according to state when headlight.If there is not lamp control button to press, then the button detection module is sent triggering signal into MCU, MCU output open command to illumination relay control loop.The time period control mode is meant: MCU if clock module arrives the corresponding time period, then controls the switch and the brightness of lamp through the lamp switch time period and the brightness of storage in the data memory module through the state of control lamp relay.
5, anti-revealing controlled: for avoiding the local dewfall such as edge of showcase, regularly dewfall is avoided in heating.MCU compares with the respective settings time of storing in the data memory module through operation of record heater strip and dwell time, if more than or equal to setting-up time, then changes the heater strip running status.
6, defrosting network: MCU is as master controller, and this master controller is connected with at least one slave controller through communication module.Like this, in the whole system, every controller has synchronous defrosting module, can many controllers connect, wherein during a controller defrosting that is set to master controller, other slave controllers also begin defrosting.Master controller can initiatively defrost, output defrosting signal, and slave controller can only be exported signal according to master controller and defrost.Like Fig. 2, when master controller 1 begins to defrost, defrosting relay 2 closures, all optocoupler conductings, slave controller is judged the optocoupler conducting, also begins defrosting.
Claims (4)
1. showcase controller; It is characterized in that: it comprises the temperature sensor that is positioned at showcase; Temperature sensor is sent into the temperature signal that collects among the MCU, and MCU compares temperature signal and preset value, and relatively back output refrigeration signal is to the relay work loop of freezing;
MCU also connects clock module, and clock module will be sent into MCU the current time, MCU time opening defrosting relay work loop, blower fan relay work loop, illumination relay control loop and the anti-relay work loop of revealing.
2. showcase controller according to claim 1 is characterized in that: too high or too low when temperature signal, when perhaps the temperature sensor no signal was exported, then the MCU output alarm signal was to warning circuit.
3. showcase controller according to claim 1 is characterized in that: described MCU connects the button detection module, and the button detection module is sent triggering signal into MCU, MCU output open command to illumination relay control loop.
4. showcase controller according to claim 1 is characterized in that: described MCU is as master controller, and this master controller is connected with at least one slave controller through communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205376728U CN202445626U (en) | 2011-12-21 | 2011-12-21 | Display cabinet controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205376728U CN202445626U (en) | 2011-12-21 | 2011-12-21 | Display cabinet controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202445626U true CN202445626U (en) | 2012-09-26 |
Family
ID=46861529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205376728U Expired - Lifetime CN202445626U (en) | 2011-12-21 | 2011-12-21 | Display cabinet controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202445626U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103169306A (en) * | 2011-12-21 | 2013-06-26 | 郑州椿长仪器仪表有限公司 | Controller of display cabinet |
| CN103218861A (en) * | 2013-03-01 | 2013-07-24 | 北京英博伦科技发展有限公司 | Showcase opening system |
-
2011
- 2011-12-21 CN CN2011205376728U patent/CN202445626U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103169306A (en) * | 2011-12-21 | 2013-06-26 | 郑州椿长仪器仪表有限公司 | Controller of display cabinet |
| CN103218861A (en) * | 2013-03-01 | 2013-07-24 | 北京英博伦科技发展有限公司 | Showcase opening system |
| CN103218861B (en) * | 2013-03-01 | 2016-07-06 | 北京英博伦科技发展有限公司 | A kind of showcase open system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |