WO2018023949A1

WO2018023949A1 - Accurate temperature measurement integrated display device for accurate temperature-controlled fruit and vegetables storage

Info

Publication number: WO2018023949A1
Application number: PCT/CN2017/000477
Authority: WO
Inventors: 陈存坤; 王文生; 于晋泽; 纪海鹏; 董成虎; 杨敦敦
Original assignee: 国家农产品保鲜工程技术研究中心（天津）
Priority date: 2016-08-02
Filing date: 2017-07-28
Publication date: 2018-02-08
Also published as: CN106248228A; CA3009101A1

Abstract

An accurate temperature measurement integrated display device for accurate temperature-controlled fruit and vegetables storage comprises a sealed rigid PVC box (1), a 0.1°C resolution meteorological thermometer (2), a micro camera (3) with an adjustable focus, an LED infrared light source (4), a video transmission line (5), a video splitter (6), a display screen (7), and a 12 V DC power supply (8). A lid and a box body of the sealed rigid PVC box (1) are sealed with a sealing strip and a screw. The 0.1°C resolution meteorological thermometer (2) crosses the sealed rigid PVC box (1) and is fixed in the box by a lock. A scale position of 0°C is adjusted to a center position of the box (1). A camera lens of the micro camera (3) with an adjustable focus is pointed at the scale position of 0°C, and the temperature scales are clearly displayed by adjusting the focus. Four LED infrared light sources (4) connected in series are placed at a back side of a case of the thermometer (2). The video transmission line (5) transmits images captured by the micro camera (3) to the video splitter (6). The 12 V DC power supply (8) is used as a DC power supply of the micro camera (3) and the LED light source (4).

Description

Fruit and vegetable precise temperature control storage precision temperature measurement centralized display device

Technical field

The invention relates to a precise temperature measuring and accurate temperature measuring centralized display system for fruits and vegetables, belonging to a system integrated with various advanced technologies such as precision temperature measurement, infrared imaging, signal transmission and image conversion display, and the invention is specially used for the preservation of fruits and vegetables. The case where the temperature is displayed is measured.

Background technique

The external factors affecting the storage quality and storage period of fruit storage are: temperature, relative humidity, gas composition and antisepsis preservation, and temperature control is the most basic and most important factor. Especially for perishable and difficult to store fruits and vegetables, the precise control of temperature and the resulting effect are more prominent. In recent years, the research and production practice of chilling-insensitive fruits and vegetables near freezing point has become a hot spot to improve the quality of preservation and prolong the storage period. Through the precise control of the library temperature, the concept of ensuring the stability of fruits and vegetables and suitable storage temperature is continuously strengthened.

Most temperate fruits and vegetables have a suitable storage temperature of about 0 °C. Under the premise of freezing damage, the storage effect will be significantly improved. Therefore, even the control difference of 0.5-1 °C will have a substantial effect on the storage of some fruits and vegetables. Impact. The premise of precise temperature control is the ability to accurately measure temperature and facilitate reading.

At present, the instruments for measuring temperature mainly include liquid expansion thermometers (such as mercury thermometers and alcohol thermometers), electronic thermometers (such as semiconductor electronic thermometers, PT100 thermal resistance thermometers, etc.). Although the electronic thermometer has the advantages of intuitive reading and sensitive sensitivity to temperature changes, it is greatly affected by changes in the external environment, and it is still necessary to use a precision mercury thermometer for calibration in high requirements. The precision mercury thermometer (weather level scale can reach 0.1 °C), has the obvious advantages of accurate temperature display, but the observation reading is inconvenient, especially in the case of poor light in the cold storage. And there is a certain influence on the temperature when the reader is close.

In order to overcome the above disadvantages and deficiencies, the present invention discloses the following technical contents:

The advantage of accurate temperature measurement by precision mercury thermometer is overcome, and the disadvantage of inconvenient reading is overcome. The invention displays the cold storage temperature value displayed on the accurate mercury thermometer through infrared imaging, wired transmission, centralized display, different parts in different libraries or in the library. The temperature is transmitted at a certain distance, which can achieve the purpose of accurately obtaining the storage temperature without entering the library, and can provide reliable and accurate temperature management values for precise temperature storage of fruits and vegetables.

Fruit and vegetable precision temperature storage precision temperature measurement centralized display system, which is characterized by: rigid PVC plastic sealed box 1, 0.1 °C divided weather thermometer 2, adjustable focal length micro camera 3, LED infrared light source 4, video transfer line 5, video splitter 6, display 7 and 12V DC power supply 8.

The rigid PVC plastic sealing box 1 of the invention is used for arranging the thermometer 2, the adjustable focal length micro camera 3, the LED infrared light source 4, the lid and the box body and the sealing strip are sealed with screws to reduce the camera lens and other devices. Condensation of water vapor; 0.1°C divided meteorological thermometer 2 is traversed in the PVC plastic box and fixed in the box with the lock head, and the 0°C value is adjusted to the center position of the box; the camera lens of the adjustable focus micro camera 3 is aligned with the 0°C position. The temperature scale value is clearly displayed by focusing; four infrared LED lamp beads are installed in series as the light source, and are placed on the back side of the thermometer sleeve, which not only keeps the continuous light source required for reading the temperature value in the PVC plastic box, but also avoids direct light. The side of the illuminated thermometer produces a reflected spot that affects the reading; the image taken by the miniature camera is transmitted to the video splitter 6 through the video transmission line. If there is only one cold storage and a temperature measuring point is installed, the video transmission line 5 can be directly connected to the display. 7 connection, if multiple cold storages and multiple temperature measurement points are installed, the video transmission line can be connected to the video segmentation 5 first, and then connected to the display screen 7, in the same display Temperature may be displayed simultaneously on a plurality of libraries; a 12V DC power supply 8 as DC miniature camera and LED light sources.

The method for using the precise temperature measuring and storing device for accurate temperature measurement of fruits and vegetables disclosed in the invention is:

(1) Install the rigid PVC plastic sealed box (1) in the center of the cold storage, 1.5 meters away from the ground, the video splitter (6) and the display (7) machine room, and the video transmission line (5) to connect the equipment;

(2) 0.1 °C division of meteorological thermometer (2) across the rigid PVC plastic sealed box with a lock fixed in the box, adjust the 0 °C position to the center of the box, adjustable focus micro camera (3) camera lens Align the 0 °C value position, and adjust the temperature scale value clearly by focusing;

(3) Adjust the LED infrared light source (4) so that the temperature reading is clear and does not produce any speckle and reflection.

(2) See Figure 1.

The invention further discloses the application of the accurate temperature-controlled storage and precise temperature measurement display device for accurately controlling temperature storage of fruits and vegetables, and the experimental results show that the accuracy of the cold storage temperature control is improved; the dry consumption of the goods is reduced; the decay rate is reduced; The storage period is extended; the shelf life is extended.

The technical effect of the precise temperature-controlled storage and precise temperature measurement display device of the present invention is compared with the prior art:

(1) The temperature control accuracy of the cold storage is improved, and the quality of preservation is improved;

(2) Cold storage management is more intuitive and simpler.

DRAWINGS

Figure 1 Schematic diagram of a precise temperature measurement display device for precise temperature control of fruit and vegetable storage;

The serial numbers in the drawings are as follows:

1. Rigid PVC plastic sealed box; 2. 0.1 °C divided weather thermometer;

3. Adjustable focus micro camera; 4. LED infrared light source; 5. Video transmission line;

6. Video splitter; 7. Display; 8. 12V DC power supply.

detailed description

The invention is described below by way of specific embodiments. Unless otherwise stated, the technical means used in the present invention are all methods known to those skilled in the art. Rather, the scope of the invention is to be construed as being limited by the scope of the invention. Various changes or modifications to the compositions and amounts of materials in these embodiments are also within the scope of the present invention, without departing from the spirit and scope of the invention. The materials and reagents used in the present invention are commercially available.

Example 1

Fruit and vegetable precision temperature storage accurate temperature measurement centralized display system, including: rigid PVC plastic sealed box, 0.1 °C divided weather thermometer, adjustable focal micro camera, LED infrared light source, video transfer line, video splitter, display and 12V DC power supply. Rigid PVC plastic sealed box for placing thermometer, adjustable focal length micro camera, LED infrared light source, lid and box body and sealing strip with screw seal to reduce water vapor condensation of camera lens and other devices; 0.1 °C divided weather thermometer horizontal The PVC plastic box is fixed in the box with the lock head, and the 0°C value is adjusted to the center position of the box; the camera lens of the adjustable focus micro camera is aligned with the 0°C value position, and the temperature scale value is clearly displayed by focusing; Install 4 infrared LED lamp beads as the light source, placed on the back side of the thermometer casing, not only to maintain the continuous light source required to read the temperature value in the PVC plastic box, but also to avoid direct reflection of the light on the side of the thermometer to produce a reflection spot and affect the reading. The image captured by the micro camera is transmitted to the video splitter through the video transmission line. If there is only one cold storage and a temperature measurement point is installed, the video transmission line can be directly connected to the display screen. If multiple cold storages are installed and multiple temperature measurement points are installed The video transmission line can be connected to the video segmentation first, and then connected to the display screen, and multiple displays can be simultaneously displayed on the same display. Temperature values; 12V DC power supply DC as miniature camera and LED light sources.

Example 2

In the miniature blueberry storage warehouse with a length of 8m, a width of 5.5m and a height of 3.5m, the temperature measurement and imaging part consisting of a rigid PVC plastic sealed box, a 0.1°C divided weather thermometer, a focus adjustable micro camera and an LED infrared light source are suspended. Cold storage The height of 1.5m in the middle of the inner main channel is used as a representative temperature measurement point; the Q9 head is used to connect the video screen line to the adjustable focus micro camera, and the other end is connected to the display screen; the 12V 1A DC power supply is turned on to supply power to the camera and the LED infrared light source; Turn on the display frequency power, obtain images on the display, adjust the thermometer position and camera focal length, get clear thermometer image and reading on the screen; install the display in a place where you can observe and master the temperature at any time; according to the precise temperature storage Accurate temperature measurement shows the temperature displayed by the system, and sets the temperature of the calibration refrigeration compressor to make the temperature of the blueberry storage stable at 0~-1°C. At this temperature, the blueberry with good quality can be stored for more than 50 days.

Example 3

Fruits and vegetables precision temperature control storage precision temperature measurement centralized display device is used as follows:

(3) Adjust the LED infrared light source (4) so that the temperature reading is clear and does not produce any speckle and reflection. Example 4

(taking fresh garlic as an example)

The result shows:

(1) using the apparatus of the present invention, the accuracy of the cold storage temperature control is improved;

(2) The temperature control accuracy of the cold storage is improved, and the quality of preservation is improved;

(3) The temperature control accuracy of the cold storage is improved, and the storage period and shelf life are prolonged.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, The same is included in the scope of patent protection of the present invention.

Claims

Fruit and vegetable precision temperature storage precision temperature measurement centralized display device, including: rigid PVC plastic sealed box (1), 0.1 °C divided weather thermometer (2), adjustable focus micro camera (3), LED infrared light source (4 ), video transfer line (5), video splitter (6), display (7) and 12V DC power supply (8), wherein the rigid PVC plastic sealed box (1) cover and box plus seal Screw seal, 0.1°C divided weather thermometer (2) Crossing the rigid PVC plastic sealing box with the lock fixed in the box, adjust the 0°C position to the center of the box, and adjust the focus of the miniature camera (3) Aligning the 0°C position, the temperature scale value is clearly displayed by focusing, and four LED infrared light sources connected in series are placed on the back side of the thermometer casing, and the image taken by the micro camera is transmitted to the video splitter through the video transmission line (5). (6) The 12V DC power supply (8) is used as a DC power supply for the miniature camera and LED light source.
The precise temperature measurement and storage centralized display device for fruit and vegetable according to claim 1, characterized in that the rigid PVC plastic sealing box (1) is used for placing the thermometer (2), the adjustable focus micro camera (3), the LED infrared The light source (4) can reduce the condensation of the surface of the miniature camera lens and the thermometer glass and affect the clarity of the data display.
The precise temperature-sensing centralized temperature display device for fruit and vegetable storage according to claim 1, characterized in that the LED infrared light source (4) is installed not directly at the scale of the thermometer, and the temperature reading is clear and does not occur through reasonable arrangement. Any spots and reflections.
The precise temperature-measuring centralized temperature display device for fruit and vegetable storage according to claim 1, wherein if only one cold storage is installed and a temperature measuring point is installed, the video transmission line (5) can be directly connected to the display screen (7). If multiple cold storages are installed with multiple temperature measurement points, the video transmission line can be connected to the video splitter (6) first, then connected to the display (7), and multiple libraries can be displayed simultaneously on the same display. Temperature value.
The precise temperature and temperature storage centralized display device for fruit and vegetable according to claim 1, wherein a temperature picture of a plurality of warehouses is obtained on one display screen, and the number of cold storages for measuring temperature or one can be set according to actual needs. The number of temperature measurement points in the cold storage.
The method for accurately measuring temperature and storage of a fruit and vegetable according to claim 1 is characterized in that the following steps are performed:

(1) Install the rigid PVC plastic sealed box (1) in the center of the cold storage, 1.5 meters away from the ground, the video splitter (6) and the display (7) machine room, and the video transmission line (5) to connect the equipment;

(2) 0.1 °C division of meteorological thermometer (2) across the rigid PVC plastic sealed box with a lock fixed in the box, adjust the 0 °C position to the center of the box, adjustable focus micro camera (3) camera lens Align the 0°C position, pass Over-focusing makes the temperature scale value clear; (3) Adjust the LED infrared light source (4) so that the temperature reading is clear and does not produce any speckle and reflection.
The precise temperature-controlled storage and temperature-concentrating display device for fruit and vegetable according to claim 1 provides an application for precise temperature-controlled storage management of fruits and vegetables.