CN105371588B - A kind of workshop freezes water controling method - Google Patents

Abstract

The invention discloses a kind of workshop to freeze water controling method, first, presets the temperature threshold of chilled water and the id information of each freezing water pot；Control refrigeration machine freezes to freezing water pot；Secondly, the temperature information in each freezing water pot is obtained in real time and freezes the id information of water pot, is sent to controller；Finally, whether the temperature absolute value that controller judges to receive is more than predetermined temperature threshold value, if greater than, obtain the id information of freezing water pot corresponding to the temperature more than temperature threshold, controller controls the conveyer of the freezing water pot to remove the freezing water pot, meanwhile the freezing water pot of non-freezing processing is moved into, otherwise continue to freeze；Cooling time and cryogenic temperature can effectively be controlled using this method, improve the quality of freezing efficiency and chilled water, avoid the waste energy.

Description

A method for controlling chilled water in a workshop

technical field

The invention belongs to the field of automatic control, and in particular relates to a method for controlling chilled water in a workshop.

Background technique

Frozen food is divided into chilled food and frozen food. Frozen food is easy to preserve and is widely used in the production, transportation and storage of perishable foods such as meat, poultry, aquatic products, milk, eggs, vegetables and fruits; nutrition, convenience, hygiene and economy; The market demand is large, it occupies an important position in developed countries, and develops rapidly in developing countries.

Cooling food: It does not need to be frozen, and it is a food that is cooled to a temperature close to the freezing point and preserved at this temperature.

Frozen food: It is food preserved at a temperature lower than the freezing point after freezing.

Chilled food and frozen food are collectively called frozen food, which can be divided into five categories according to raw materials and consumption forms: fruits and vegetables, aquatic products, meat, poultry and eggs, rice and noodle products, and prepared convenience foods.

In the production process of frozen food, a certain amount of frozen water needs to be used to cool the food during production, storage or transportation, otherwise it will affect the quality of the food. Although the temperature of the chilled water required for cooling is not required to be very low, the amount of chilled water required is relatively large. In actual production, due to the insufficient supply of the required chilled water, it affects the production efficiency.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for controlling chilled water in a workshop, which solves the problem of low efficiency of the refrigeration system or method in the prior art.

The present invention adopts the following technical solutions for solving the problems of the technologies described above:

A method for controlling chilled water in a workshop. The method is based on a chilled water control system in a workshop. The chilled water control system includes a controller, a refrigeration unit, a filter, a chilled water tank, and a transmission device, wherein the refrigeration unit includes a plurality of sequentially arranged Refrigerator, each refrigerator includes a condenser, evaporator, throttle valve and compressor, each refrigerator corresponds to a chilled water tank, the chilled water tank is set on the conveyor, and a temperature sensor is set inside the chilled water tank, each The chilled water tanks are all connected to the water inlet pipeline, and the inlet of the water inlet pipeline is provided with a filter, including the following steps:

Step 1. Preset the temperature threshold of chilled water and the ID information of each chilled water tank;

Step 2, controlling the refrigerator to refrigerate the chilled water tank;

Step 3. Obtain the temperature information in each chilled water tank and the ID information of the chilled water tank in real time, and send them to the controller;

Step 4, the controller judges whether the absolute value of the received temperature is greater than the preset temperature threshold, if greater, execute step 5, otherwise, continue to execute step 2;

Step 5. Acquire the ID information of the chilled water tank corresponding to the temperature greater than the temperature threshold, the controller controls the conveying device of the chilled water tank to remove the chilled water tank, and at the same time, move the chilled water tank that has not been refrigerated, and return to step 2 ;

Step 6. Repeat step 2 to step 5.

The controller includes a central processing unit, a display module, a data transmission module, a data storage module, and an alarm module, the display module is used to display the working status information of the chilled water system, and the data transmission module is used to send the central processing unit The control signal is transmitted to the refrigeration unit, filter, and transmission device, and the signal collected by the temperature sensor is transmitted to the central processing unit. The data storage module is used to store preset working mode information and data information generated during the intermediate process. , the alarm module is used for sending alarm information when the chilled water system is abnormal or the working process is abnormal.

The central processing unit is one of an FPGA chip, an ARM chip, and a DSP chip.

The central processing unit is one of the Spartan-6 series chips of Xilinx Company.

The temperature threshold in step 1 is -3°C to -5°C.

Compared with the prior art, the present invention has the following beneficial effects:

1. This method can effectively control the freezing time and freezing temperature, improve the freezing efficiency and the quality of frozen water, and avoid wasting energy.

2. Multiple refrigerators are used for refrigeration, transmission is carried out by transmission, and temperature sensors are used for real-time testing, which improves the efficiency of chilled water and thus improves production efficiency.

detailed description

The structure and working process of the present invention will be further described below.

A method for controlling chilled water in a workshop. The method is based on a chilled water control system in a workshop. The chilled water control system includes a controller, a refrigeration unit, a filter, a chilled water tank, and a transmission device, wherein the refrigeration unit includes a plurality of sequentially arranged Refrigerator, each refrigerator includes a condenser, evaporator, throttle valve and compressor, each refrigerator corresponds to a chilled water tank, the chilled water tank is set on the conveyor, and a temperature sensor is set inside the chilled water tank, each The chilled water tanks are all connected to the water inlet pipeline, and the inlet of the water inlet pipeline is provided with a filter, including the following steps:

Step 1. Preset the temperature threshold of chilled water and the ID information of each chilled water tank;

Step 2, controlling the refrigerator to refrigerate the chilled water tank;

Step 3. Obtain the temperature information in each chilled water tank and the ID information of the chilled water tank in real time, and send them to the controller;

Step 4, the controller judges whether the absolute value of the received temperature is greater than the preset temperature threshold, if greater, execute step 5, otherwise, continue to execute step 2;

Step 5. Acquire the ID information of the chilled water tank corresponding to the temperature greater than the temperature threshold, the controller controls the conveying device of the chilled water tank to remove the chilled water tank, and at the same time, move the chilled water tank that has not been refrigerated, and return to step 2 ;

Step 6. Repeat step 2 to step 5.

The controller includes a central processing unit, a display module, a data transmission module, a data storage module, and an alarm module, the display module is used to display the working status information of the chilled water system, and the data transmission module is used to send the central processing unit The control signal is transmitted to the refrigeration unit, filter, and transmission device, and the signal collected by the temperature sensor is transmitted to the central processing unit. The data storage module is used to store preset working mode information and data information generated during the intermediate process. , the alarm module is used for sending alarm information when the chilled water system is abnormal or the working process is abnormal.

The central processing unit is one of an FPGA chip, an ARM chip, and a DSP chip.

The central processing unit is one of the Spartan-6 series chips of Xilinx Company.

Specific embodiment one,

A method for controlling chilled water in a workshop, comprising the steps of:

Step 1. Preset the temperature threshold of chilled water as -3°C and the ID information of each chilled water tank;

Step 2, controlling the refrigerator to refrigerate the chilled water tank;

Step 3. Obtain the temperature information in each chilled water tank and the ID information of the chilled water tank in real time, and send them to the controller;

Step 4, the controller judges whether the absolute value of the received temperature is greater than the preset temperature threshold, if greater, execute step 5, otherwise, continue to execute step 2;

Step 5. Acquire the ID information of the chilled water tank corresponding to the temperature greater than the temperature threshold, the controller controls the conveying device of the chilled water tank to remove the chilled water tank, and at the same time, move the chilled water tank that has not been refrigerated, and return to step 2 ;

Step 6. Repeat step 2 to step 5.

Specific embodiment two,

A method for controlling chilled water in a workshop, comprising the steps of:

Step 1. Preset the temperature threshold of chilled water as -4°C and the ID information of each chilled water tank;

Step 2, controlling the refrigerator to refrigerate the chilled water tank;

Step 3. Obtain the temperature information in each chilled water tank and the ID information of the chilled water tank in real time, and send them to the controller;

Step 4, the controller judges whether the absolute value of the received temperature is greater than the preset temperature threshold, if greater, execute step 5, otherwise, continue to execute step 2;

Step 5. Acquire the ID information of the chilled water tank corresponding to the temperature greater than the temperature threshold, the controller controls the conveying device of the chilled water tank to remove the chilled water tank, and at the same time, move the chilled water tank that has not been refrigerated, and return to step 2 ;

Step 6. Repeat step 2 to step 5.

Specific embodiment three,

A method for controlling chilled water in a workshop, comprising the steps of:

Step 1. Preset the temperature threshold of chilled water as -5°C and the ID information of each chilled water tank;

Step 2, controlling the refrigerator to refrigerate the chilled water tank;

Step 3. Obtain the temperature information in each chilled water tank and the ID information of the chilled water tank in real time, and send them to the controller;

Step 4, the controller judges whether the absolute value of the received temperature is greater than the preset temperature threshold, if greater, execute step 5, otherwise, continue to execute step 2;

Step 5. Acquire the ID information of the chilled water tank corresponding to the temperature greater than the temperature threshold, the controller controls the conveying device of the chilled water tank to remove the chilled water tank, and at the same time, move the chilled water tank that has not been refrigerated, and return to step 2 ;

Step 6. Repeat step 2 to step 5.

The central processing unit is one of the Spartan-6 series chips of Xilinx Company.

In this embodiment, the XC6SLX16 chip in the Spartan-6 series chips of Xilinx Company is used as the main processor. The Spartan-6 series not only has industry-leading system integration capabilities, but also achieves the lowest total cost applicable to mass-volume applications. The family consists of 13 members and is available in densities ranging from 3840 logic cells to 147443 logic cells. Compared with the previous generation Spartan series, this series consumes only 50% of the power, and has faster speed and richer connection functions. The Spartan-6 series is manufactured using mature 45nm low-power copper process technology, which achieves a perfect balance between cost performance and power consumption, and can provide new and more efficient dual-register 6-input look-up table (LUT) logic and a rich set of built-in systems Level modules, including 18Kb (2 x 9Kb) Block RAM, second generation DSP48A1 Slice, SDRAM memory controller, enhanced mixed-mode clock management module, SelectIO™ technology, power-optimized high-speed serial transceiver module, PCIExpress® compatible Endpoint blocks, advanced system-level power management modes, auto-detect configuration options, and enhanced IP security with AES and Device DNA protection. These excellent features provide a low-cost programmable alternative to custom ASIC products with unprecedented ease of use. Spartan-6 FPGAs provide an optimal solution for high-volume logic designs, consumer-oriented DSP designs, and cost-sensitive embedded applications. Spartan-6 FPGAs provide a solid foundation for programmable silicon, ideally suited for targeted design platforms that provide integrated hardware and software components, allowing designers to focus on innovation early in the development effort.

1. The Spartan-6 FPGA logic cell rating fully reflects the more powerful logic cell capabilities of the latest 6-input LUT architecture.

2. Each Spartan-6 FPGA Slice contains 4 LUTs and 8 flip-flops.

3. Each DSP48A1 Slice contains a 18x18 multiplier, an adder and an accumulator.

4. The size of Block RAM is basically 18Kb. Each block is also available as two independent 9Kb blocks.

5. Each CMT contains two DCMs and one PLL.

6. The memory controller module is not supported in the -3N speed grade.

Technicians can select specific models for projects based on needs involving input.

Claims (5)

1. A plant chilled water control method, the method is based on the plant chilled water control system, the chilled water control system includes a controller, a refrigeration unit, a filter, a chilled water tank, and a transfer device, wherein the refrigeration unit includes a plurality of successive The set of refrigerators, each refrigerator includes a condenser, evaporator, throttle valve and compressor, each refrigerator corresponds to a chilled water tank, the chilled water tank is set on the conveying device, and a temperature sensor is installed inside the chilled water tank, Each chilled water tank is connected with the water inlet pipeline, and the inlet of the water inlet pipeline is provided with a filter, which is characterized in that it includes the following steps: Step 1. Preset the temperature threshold of chilled water and the ID information of each chilled water tank; Step 2, controlling the refrigerator to refrigerate the chilled water tank; Step 3. Obtain the temperature information in each chilled water tank and the ID information of the chilled water tank in real time, and send them to the controller; Step 4, the controller judges whether the absolute value of the received temperature is greater than the preset temperature threshold, if greater, execute step 5, otherwise, continue to execute step 2; Step 5. Acquire the ID information of the chilled water tank corresponding to the temperature greater than the temperature threshold, the controller controls the conveying device of the chilled water tank to remove the chilled water tank, and at the same time, move the chilled water tank that has not been refrigerated, and return to step 2 ; Step 6. Repeat step 2 to step 5. 2. The method for controlling chilled water in a workshop according to claim 1, wherein the controller includes a central processing unit, a display module, a data transmission module, a data storage module, and an alarm module, and the display module is used to display the frozen water The working status information of the water system, the data transmission module is used to transmit the control signal sent by the central processor to the refrigeration unit, filter, and transmission device, and transmit the signal collected by the temperature sensor to the central processor, the data The storage module is used to store preset working mode information and data information generated during the intermediate process, and the alarm module is used to send alarm information when the chilled water system or the working process is abnormal. 3. The method for controlling chilled water in a workshop according to claim 2, characterized in that: the central processing unit is one of an FPGA chip, an ARM chip, and a DSP chip. 4. The workshop chilled water control method according to claim 3, characterized in that: the central processing unit is one of the Spartan-6 series chips of Xilinx Company. 5. The method for controlling chilled water in a workshop according to claim 1, characterized in that: the temperature threshold in step 1 is -3°C to -5°C.