JPH06305510A - Carry-in and carry-out management system of cold storage - Google Patents

Abstract

PURPOSE:To prevent damage to an electronic circuit as water vapour contained in air inside of a case body of a unit dews in a moving terminal unit moving in and out of a cold storage in a short period of time and which is used in a carry-in and carry-out management system of cold storage. CONSTITUTION:A display unit 11 constituting a part of a moving terminal unit is devised so that the inside of a case body 11a is covered with a heat insulating material 37 and is not instantly cooled even when it comes into a cold storage. In the meantime, a forced dewing part 38 in which inside air directly comes in contact with outside air through the case body 11a is formed by way of cutting out a part of this heat insulating material 37. Consequently, even when the moving terminal unit enters the cold storage, water vapour contained in air in the inside of the case body 11a (airtight) speedily dews in this forced dewing part 38, and thereafter, does not dew in a place affecting bad influence on an electronic circuit (for example, ceiling part and others) even when the enter of casing body 11a becomes cold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an entry / exit management system for a frozen warehouse having a large temperature difference from the outside.

[0002]

2. Description of the Related Art A system for wirelessly managing the entry and exit of products and the like in a warehouse has been put into practical use. This system is capable of issuing a warehousing instruction and a warehousing instruction online instead of the warehousing slip and the warehousing slip. That is, the host computer having the warehousing / unloading management file directly sends / displays the warehousing / incoming instruction data to the mobile terminal device on the staff side, and the clerk looks at the data to perform the work, and confirms the completion of the work, etc. It is a system that directly sends data from the computer to the host computer. The mobile terminal device on the clerk side is not only carried by the clerk but also installed on a forklift or the like operated by the clerk.

By adopting this system, it is possible to manage and instruct the warehousing in real time, so that it is possible to eliminate the time difference from the warehousing to the warehousing of the product. Therefore, the stored product can be immediately delivered to facilitate the distribution of the product, the inventory can be reduced, and the scale of the warehouse can be reduced. In addition, because inventory management is completed online,
There is also an advantage that it is not necessary to handle paper slips, the office processing efficiency is improved, and processing errors are eliminated. further,
It can also contribute to paperlessness.

[0004]

By the way, the warehouse is not only an ordinary warehouse but also a frozen warehouse for storing frozen foods and the like. When this system is applied to a frozen warehouse, the mobile terminal device frequently goes in and out of the frozen warehouse during loading and unloading operations. The inside of the freezing warehouse is cooled to around -25 ° C, and the temperature outside the warehouse can reach 30 ° C or higher in summer.

For this reason, various obstacles may occur in the mobile terminal device that repeatedly travels through this temperature difference in a short time.

[0006] For example, the casing of a mobile terminal device is airtight, but since it is extremely difficult to manufacture a product under completely dry air, air containing normal steam is enclosed. There is. When this mobile terminal device was placed in a freezer warehouse at -25 ° C, water vapor in the housing was rapidly condensed to form dew on the inner wall of the housing, and water droplets could drip onto the circuit board of the electronic circuit, thus impairing the operation. .

However, as described above, reducing the water vapor content in the housing to 0% is not rational because it requires a huge investment in manufacturing equipment.

The present invention provides an entry / exit management system for a refrigerated warehouse equipped with a mobile terminal device which does not hinder the electronic circuit therein even if the water vapor of the air enclosed in the housing is condensed. With the goal.

[0009]

According to the present invention, a host computer having an entry / exit management file in a frozen warehouse, communication means connected to this host computer for transmitting and receiving data, and entering and exiting in the frozen warehouse are provided. A loading / unloading management system for a frozen warehouse, comprising: a mobile terminal device provided in a mobile body and having a communication function with the communication means, wherein a housing of the mobile terminal device is airtightly configured, and A heat insulating material layer is formed on the surface, and a notch is formed on a part of the heat insulating material layer other than the ceiling side.

[0010]

In this invention, the casing of the mobile terminal device is formed airtight, and the heat insulating material layer is formed on the inner surface of the casing. Due to this heat insulating material layer, dew condensation does not occur immediately on the inner surface of the housing even when the mobile terminal device enters the freezer warehouse. On the other hand, this heat insulating material layer was cut out at a part (for example, a bottom surface) other than the ceiling side to provide a cutout portion. In this cutout portion, the cold air is conducted to the inside at the moment of entering the freezer warehouse, and the steam of the air inside is rapidly cooled only in this portion. As a result, most of the water vapor contained in the internal air will condense at this place. Therefore, even if the cool air is conducted to the inside after passing through the heat insulating material layer, the water vapor dewed at that portion is not left in the air.

Since the notch is provided at a place other than the ceiling side of the housing, the condensed water drops do not drip onto the electronic circuit, and the circuit operation is not adversely affected.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the construction of a storage / delivery management system for a frozen warehouse according to an embodiment of the present invention. The host computer 1 provided with the entry / exit management file is installed in a company office or the like. The mobile terminal device 3 is provided on the forklift 4. The mobile terminal device 3 has a wireless transmission / reception function (wireless unit 12) (see FIGS. 2 and 3), and the host computer 1 has a wireless relay device 2 for transmitting / receiving data to / from the mobile terminal device 3. It is connected. The wireless repeater 2 is connected to two antennas 7 via a distributor 6. 1 of these 2 antennas
One is installed inside the frozen warehouse 5, and the other is installed outside the warehouse. As a result, the host computer 1
Can communicate with the mobile terminal device 3 regardless of whether the forklift 4 is inside the warehouse or outside the warehouse.

FIG. 2 is a diagram showing a unit configuration of the mobile terminal device, and FIG. 3 is a block diagram showing a circuit configuration of the mobile terminal device. As shown in FIGS. 2 and 3, the mobile terminal device comprises three units, that is, a power supply unit 10, a display unit 11 and a wireless unit 12.

Each unit will be described with reference to FIGS. 2, 3 and 4 to 6. 4, FIG. 5, and FIG. 6 are diagrams showing the configurations of the power supply unit 10, the display unit 11, and the wireless unit 12, respectively.

The power supply unit 10 includes a system power supply section 20.
And a heater power supply unit 21.

Both power supply units operate using the battery of the fork wrist 4 as a power supply. The system power supply unit 20 converts the battery voltage into a constant voltage and supplies it to each unit as an operating power supply.

The heater power source section 21 supplies electric power to the transparent heater 32 provided in the display unit 11 and the heater 42 provided in the wireless unit. The heater switch unit 22 controls ON / OFF of the heater power supply unit 21. A temperature sensor 23 is connected to the heater switch section 22. The detection portion formed at the tip of the temperature sensor 23 is exposed to the outside of the housing 10a (see FIG. 4),
The heater switch unit 22 turns on / off the heater power supply unit 21 based on the detected value of the temperature sensor. Further, a toggle switch 24 for turning on / off the power of the entire terminal device is provided on the side surface of the housing.

The display unit 11 has a built-in control unit 30 for performing data processing and display control. The control unit 30 includes
A key switch provided on the display unit 31 of the LCD for displaying received data or the like or on the front panel of the housing 11a,
An LED display or the like is connected. The display unit 31 is the housing 1
It is installed from inside 1a toward the opening 11b on the front of the housing. A transparent plate 35 is fitted in the opening 11b to keep the inside of the housing 11a airtight. Case 11
Silicon cover 3 to prevent water from entering outside of a.
6 is provided excluding the opening 11b and the connector portion on the bottom surface of the housing 11a. Inside the casing 11a, a transparent heater 32 is provided between the transparent plate 35 and the LCD display unit 31, and the control unit 30 and the brightness control unit 33 are supported by a spacer in the central portion inside the casing. . A temperature sensor 34 for brightness control is attached to the back surface of the display unit 31. The transparent heater 32 includes the heater power source unit 2
Power is supplied from 1. The transparent heater 32 is a transparent plate 35.
Between the LCD and the display section 31 of the LCD, condensation on the transparent plate 35 is prevented, and the display characteristics of the LCD are prevented from changing due to temperature decrease. The brightness control unit 33 is a circuit that adjusts the applied voltage to keep the display density constant when the temperature of the display unit 31 of the LCD changes. The applied voltage is adjusted based on the detection value of the temperature sensor 34.

On the other hand, a urethane heat insulating material 37 is uniformly attached to the inner surface of the casing 11a except for the forced dew condensation portion 38 on the bottom surface. The heat insulating material 37 prevents water vapor contained in the air inside the housing from condensing on the inner surface of the housing when the apparatus enters the freezer warehouse. On the other hand, since the forced dew condensation part 38 is not provided with the heat insulating material 37, when entering the freezing warehouse, only the forced dew condensation part 38 inside the housing suddenly drops in temperature, and the steam is condensed only in this part. Due to this dew condensation, the air inside the case 11a that is kept airtight contains almost no water vapor. After that, even if cold air is conducted to the inside through the heat insulating material 37, dew condensation does not occur at the other portion. This prevents the electronic circuit from being damaged by dew condensation on the portion other than the forced dew condensation portion 38, for example, the upper surface of the housing, and water droplets falling on the substrate.
When it goes out of the warehouse, the high temperature of the outside air is conducted to the forced dew condensation part 38, and the water drops become water vapor and are contained in the air inside the housing.

The radio unit 12 has a radio controller 40 and a radio device 41 inside the housing, and has an antenna 43 on the top surface of the housing. The wireless control unit 40 performs operations such as transmission / reception channel setting and transmission / reception data buffer. Radio 41
Consists of a circuit that modulates and demodulates data. A substrate on which the wireless controller 40 and the wireless device 41 are assembled is provided in the center of the housing 12a by a spacer, and a heater 42 is provided below the substrate. This heater 42
Is to keep the internal temperature and operate each circuit normally. Further, a heat insulating material 44 is provided inside the housing of the wireless unit 12, and the heat insulating material 44 is provided on a part of the side surface.
Is cut out. This notch is the forced condensation part 4
Function as 5.

FIG. 7 is a flowchart showing the operation of the mobile terminal device. FIG. 7A shows the operation during the warehousing work. First, when a product arrives, its pallet number is input (n1). This input is performed by operating a key provided on the surface of the display unit 11. Further, a hand laser scanner can be connected to the display unit 11, and when the hand laser scanner is connected, the pallet number is scanned and input. This pallet number is transmitted to the host computer 1 to inquire about data relating to warehousing (n2). Voucher data is sent from the host computer 1. This is received (n3) and displayed on the display unit 31. The clerk carries out the warehousing work according to this display (n5). When the storage is completed, the shelf label number is input (n6). The shelf labels may be scanned with a hand laser scanner. If this is sent to the host computer (n7) and an OK reply is received (n8)
The work is completed.

FIG. 3B is a flow chart showing the operation at the time of leaving work. A staff member issues a shipping inquiry (n1
0). The host computer 1 replies to the delivery list, and the mobile terminal device 3 receives this (n11),
It is displayed on the display unit 31 (n12). The delivery list includes data such as shelf numbers, product names, and quantities. The clerk performs picking work according to this (n13). When this is completed, data indicating the completion is transmitted together with the number of the delivery slip (n14). In response to this, an OK reply is received from the host computer 1 (n15), and the operation ends.

As described above, in this system, the staff can display the slip on the spot without the staff having to go to the office to receive the slip, which enables efficient work.

[0024]

As described above, according to the present invention, the casing of the mobile terminal device is made airtight, the heat insulating material layer is formed on the inner surface, and the heat insulating material layer is partially provided with the cutout portion. Thus, when entering the frozen warehouse, dew condensation occurs only in this part, and it is possible to prevent dew condensation in other parts, so that it is possible to eliminate troubles of the electronic device due to water drops and the like.

[Brief description of drawings]

FIG. 1 is a diagram showing the configuration of an entry / exit management system for a frozen warehouse according to an embodiment of the present invention.

FIG. 2 is a diagram showing an external configuration of a mobile terminal device used in the same entry / exit management system.

FIG. 3 is a block diagram showing a circuit configuration of the mobile terminal device.

FIG. 4 is a configuration diagram of a power supply unit of the mobile terminal device.

FIG. 5 is a configuration diagram of a display unit of the mobile terminal device.

FIG. 6 is a configuration diagram of a wireless unit of the mobile terminal device.

FIG. 7 is a flowchart showing an operation of the mobile terminal device.

[Explanation of symbols]

 1-Host computer 3-Mobile terminal device 4-Forklift 5-Freezer 7-Antenna 10-Power supply unit 11-Display unit 12-Wireless unit 10a, 11a, 12a-Housing 37,44-Heat insulation material 38,45-Forced Condensation part

Claims (1)

[Claims] 1. A host computer having an entry / exit management file in a frozen warehouse, a communication unit connected to the host computer for transmitting and receiving data, and a communication unit provided in a moving body for entering and leaving the frozen warehouse. A mobile terminal device having a communication function with, and a storage management system for a refrigerated warehouse, comprising: a casing of the mobile terminal device is formed airtight, and a heat insulating material layer is formed on an inner surface of the casing. Further, a storage / receipt management system for a frozen warehouse, characterized in that a cutout is formed in a part of the heat insulating material layer other than on the ceiling side.