JP2000327114A - Radio retrieving system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform confirmation/retrieval works for short time without requiring the number of persons by transmitting radio waves to a receiver mounted on a part and a material from a retrieval transmitter at hand and retrieving the location by transmitting sound or light or both sound and light by the receiver. SOLUTION: As a frequency of a radio wave transmitted from a transmitter, 315 MHz is used and a receiver is selected by a receiver cord modulated digitally. Namely, a signal constituted 6f a preample bit, a start bit, a data bit and a stop bit is transmitted to each receiver by communication speed 1 kbps. The receiver side responds by each determined receiver cord in the data bits of a received signal. The receiver cord is constituted of 9 bits which are included in the data bit succeeding after 21 bits in total of the preample bit and the start bit. When a cord stored in the receiver and a cord of a received radio wave coincides, the receiver produces sound by a buzzer for about two seconds or turns on an LED lamp.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention transmits a radio wave to a receiver attached to each of a large number of materials and components, and confirms the location of each material or component by using a sound or light by a digital signal of the radio wave. The present invention relates to a wireless search system.

[0002]

2. Description of the Related Art Conventionally, when transporting a large amount of various materials and parts, it is a common method to carefully count the number and look at the lapel in a packaged one. Spent without being confirmed. In an automatic warehouse, only the quantity of goods received is input to a computer, and the quantity of goods leaving is only input, and usually no inventory check is performed. Further, what is inconvenient is the parts to be piled up, which is very troublesome to check. For example, in the case of piping parts, they all have the same name depending on the diameter of many pipes,
There are many kinds of parts of similar size, and the location and number of necessary parts are often confirmed manually.

[0003]

As described above, there is no particularly convenient method for confirming the quantity and type of materials and parts near the site, which is inconvenient. There are cases where it is very effective if the type and quantity of each material and part can be confirmed by a simple method with the stacked state bears.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wireless search system capable of performing confirmation work in a short time without using a large number of people.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a wireless retrieval system for detecting which part or material is located where many kinds of materials and parts are placed, and the above object of the present invention is at hand. This is achieved by transmitting radio waves from a transmitter to a receiver attached to the component or material, and searching for the location by emitting sound or light or sound and light.

[0006] With such a configuration, the wireless search system of the present invention can be configured such that a predetermined receiver is attached to various materials and parts or to a package, and a person who checks the receiver can use a search transmitter (hereinafter, referred to as a transmitter) at hand. , "Transmitter"), and the receiver responds by emitting radio waves, so that the quantity and type of materials and parts can be easily confirmed.

More specifically, the above-mentioned receiver includes a receiver N
o. Are stored in the file of the transmitter. Then, a part code and a material code (hereinafter, referred to as “part code or the like”) are created.

The power supply of the receiver is equipped with a dry battery, and is always in a standby state in which a signal from the transmitter is transmitted. The power consumption during this time is designed to be small. Radio waves from the transmitter are transmitted and the receiver No. If they match, the receiver emits a sound or light and responds. Sound and light are cut off in a certain period of time, reducing the power consumption of the batteries.

Although the transmitter is not particularly required to be portable, it may be a battery power source when used at a work site or the like. The transmitter is a receiver No. Are transmitted in succession (hereinafter referred to as "scan") and stop where there is no response.
Thus, the receiver No. The scanning operation is simplified to complete the checking operation in a short time.

Further, the above object of the present invention can be more effectively achieved by assuming that radio waves transmitted to the receiver attached to materials and components are modulated by digital signals.

With such a configuration, the wireless search system of the present invention modulates the radio wave emitted from the transmitter by a digital signal and does not receive external noise noise even if the radio wave is weak. The receiver can respond. When the frequency is set to about several hundred megahertz, the antenna can be made smaller, and both the transmitter and the receiver can be miniaturized.

Further, the above object of the present invention is to provide a digital signal of a radio wave transmitted to the receiver attached to a material or a component.
This is more effectively achieved by changing and assigning the code of the digital signal according to a plurality of types of materials and types of parts so that the code can be individually selected.

[0013] By adopting such a configuration, the present invention provides a wireless search system for selecting a material or a component to be confirmed by a digital signal code assigned to the material or component, thereby locating the material or the component by a radio wave emitted from a transmitter. Search for. At this time, even if it is desired to confirm the parts by several combinations, the contents can be represented by the contents of the codes, and the receiver also needs to store the codes of the materials and the parts.

[0014] Further, the object of the present invention is that the receiver attached to a material or a part emits sound or light or sound and light for a predetermined fixed time when receiving a radio wave of a set digital signal code. To achieve more effectively.

With this configuration, the wireless search system of the present invention is described as being performed using radio waves as a medium, but there is a possibility that communication can be performed by infrared rays. However, while infrared is searchable within line of sight, objects in the pile of shadows may not be signaled and may be impractical. It has been found that the present invention can be applied to an unmanned warehouse.

[0016]

An embodiment of the present invention will be described below with reference to FIG. The frequency of the radio wave transmitted from the transmitter is 3
The receiver is selected by using the following receiver code digitally modulated using 15 MHz. That is, at a communication speed of 1 kbps, a preamble bit, a start bit,
A signal composed of data bits and stop bits is sent to each receiver. The receiver responds with the respectively determined receiver code in the data bits of the received signal.

The receiver code is composed of 9 bits, and is included in data bits following a total of 21 bits of a preamble bit and a start bit. When the code stored in the receiver matches the code of the received radio wave, the receiver emits a sound for about 2 seconds by a puzzer or turns on an LED lamp.

FIG. 2 shows the structure of the above-mentioned signal pulse. It is also possible to put a material code or a part code in the data bits and substitute for the receiver code. That is, it is sometimes more convenient to eliminate the receiver code and perform a search at the component level using the component code. At this time, the receiver needs to store the component code.

Further, the data bits can be classified by inserting a customer code into the data bits. This is because in-vehicle products that transport the same product (parts) to multiple customers may need to be classified by customer and product type, which is very convenient for checking after loading in a car.

The dimensions of the actual receiver are 55 mm × 35 mm
Assuming that the size is × 35 mm, the battery used was of the “006p” standard, and showed a continuous standby time of 20 to 30 days.

[0021]

As described above, according to the present invention, a radio wave is transmitted from a search transmitter at hand to a receiver attached to a component or material to be searched, and the receiver determines the location of the component or material by sound or light. Therefore, it is possible to provide a wireless search system capable of easily confirming and searching for products such as stacked materials, parts, and the like in a short time without using a large number of people.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a wireless search system according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a communication signal format of the wireless search system of the present invention.

Continuation of front page (72) Inventor Yasuyuki Suzuki 4-3-1 Shintoda, Hamamatsu-shi, Shizuoka Prefecture F-term in NST Co., Ltd. (reference) 3F022 MM03 MM08 MM13 MM22 MM35 PP04 5B035 AA00 BC05 5B075 MM70 ND20 NK02 PP10 PP22 PQ02 PQ04 PQ10 QS20 UU40 5K067 AA21 BB28 BB32 EE02 EE10 FF03 FF24 FF27 FF31 HH22

Claims (4)

[Claims] 1. A wireless search system for detecting which part or material is located where many kinds of materials or parts are placed, and a receiver attached to the part or material from a search transmitter at hand. A radio search system comprising: transmitting a radio wave to a receiver; and searching for the location by emitting sound or light or sound and light. 2. The wireless search system according to claim 1, wherein a radio wave transmitted to the receiver attached to a material or a component is modulated by a digital signal. 3. A digital signal of a radio wave to be transmitted to the receiver attached to a material or a component can be individually changed by adding a code of the digital signal in accordance with a plurality of types of the material or the component and can be individually selected. 2. The wireless search system according to claim 1, wherein: 4. The receiver attached to a material or a component,
When receiving the radio wave of the set digital signal code,
2. The wireless search system according to claim 1, wherein the wireless search system emits sound or light or sound and light for a predetermined period of time.