JP2001136118A - Wireless system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an excellent wireless receiver having no wired communication function or wireless transmission reception function provided with a means that can browse a reception history without addition of a special function. SOLUTION: In the wireless system consisting of transmitters C, C-1, C-2, a receiver A and a repeater, the receiver A stores history information such as a reception time and a reception level to a storage section together with data sent from the transmitters C, C-1, C-2 and has a changeover means that switches a reception mode into a maintenance mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a wireless system, and more particularly to a wireless system having a maintenance function.

[0002]

2. Description of the Related Art Recently, a wireless call system in which a weak radio wave is transmitted from a wireless transmitter to operate a wireless receiver such as a chime or an emergency receiver in a wireless manner has been developed. It has been widely used in hospitals and the like.

FIG. 6 is a configuration diagram schematically showing an example of a conventional wireless call system. This wireless call system has an ID code assigned to each,
It comprises a plurality of wireless transmitters C, C-1, C-2 and a wireless receiver A. In the figure, for example, a wireless transmitter C is a bathroom wireless transmitter, a wireless transmitter C-1 is a call chime transmitter installed at the entrance, and a wireless transmitter C-2 is on a ceiling or wall. The installed human body detecting transmitters are shown.

[0004] These wireless transmitters C, C-1, C
In some installation type wireless transmitters such as -2, the driving power supply is supplied from a commercial power supply, but the power supply is driven by a replaceable built-in battery (not shown). There is also.

[0005]

However, in this type of wireless system, if there is a complaint that a radio wave does not reach from a user, an investigation is made on site to determine whether there is a problem with the transmitter. Whether the problem is a problem of the receiver or a problem of radio wave propagation is often unknown because the phenomenon is not reproduced. Therefore, in order to investigate the cause of such a trouble, it is required that the receiver browse history information such as the reception time and the reception level of the wireless transmitter. However, there is a problem that the history information can be browsed with a receiver having a transmission function, but not with a receiver without a transmission function.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a wireless receiver having no wired communication function or wireless transmission / reception function without receiving any special function. An object of the present invention is to provide an excellent wireless receiver having means for browsing the history.

[0007]

According to the present invention, in a wireless system comprising a transmitter, a receiver, and a repeater, the receiver is transmitted from the transmitter. And storage means for storing history information such as a reception time and a reception level together with the received data, and switching from a reception mode to a maintenance mode.

[0008] According to the second aspect of the present invention, a first aspect is provided.
In the invention described above, the receiver has a maintenance display unit for displaying data and history information from the transmitter in a maintenance mode.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a wireless system according to the present invention will be described in detail with reference to FIGS.

First, the system will be described. As shown in FIG. 1, a transmitter (slave unit) has a wireless transmission function, and a receiver (master unit) A is a device having a wireless reception function. A wireless communication system is configured. Slave units C, C-1, and C-2 are:
A signal is sent to the master unit using a wireless medium in response to the event that has occurred. The master unit receives a wireless signal from the slave unit, and turns on an LED or outputs sound according to the content of the event to notify the user of the event state. The transmitters C, C-1, and C-2 perform transmission when an event occurs in the system. The receiver A is a control device in the system and has a transmission / reception function. In this system, even if the application range of the system is widened, a relay (not shown) may be used to exchange signals between the transmitter and the receiver to improve the reliability of radio wave propagation.

As shown in FIG. 2A, the receiver A includes an antenna 1, a switch SW, a light emitting element LED, and a speaker SP.
And a housing. The antenna 1 is for receiving a radio signal from the transmitter, the switch SW is used when shifting from the state after occurrence of the event and from the steady state to the maintenance state, and the light emitting element LED and the speaker SP are based on the content of the received event. This is to notify the user of the event status using a lamp and sound.

A block diagram of the internal circuit of the receiver A is shown in FIG.
Shown in Antenna 1 catches the radio wave from the transmitter, and R
The F signal passes through the RF terminal 2 and is input to the wireless receiving unit 3. The RF signal is demodulated by the radio receiving unit 3 and input to the signal processing unit 4 as a baseband signal, where the signal is processed. The signal processing unit 4 drives the audio amplifier 8 and the speaker 9 and turns on the display unit 6 in accordance with the content of the signal processing to notify the user of the situation, and stores the data content in the storage unit 5. . The storage unit 5 is a non-volatile memory, and can be electrically erased and read / written. The data from the transmitters C, C-1, and C-2 are as shown in FIG. Here, the memory contents of the storage unit 5 include a wireless communication history in addition to items necessary for the system. The wireless communication history is data required when a wireless communication failure or the like occurs or when maintenance is performed, and includes the following (1) to (5). (1) Transmitter number (2) Transmission counter value (3) Type of alert (4) Reception level (5) Date (time) Also, when the reception history storage area is completely used, the old history is replaced with the new one. Update to history.

The data display contents after shifting to the maintenance mode will be described. The sequence of the display contents of the reception history information is as follows: 1 transmitter number, 2 transmission counter value, 3
The type of alarm, the reception level, and the date (time) are fixed in the order of the date, the step-up is performed each time the SW is pressed, and the numerical value is known based on the LED lighting content of the receiver main body. The expression of the numerical value by this LED lighting is based on the lighting contents of FIG.

Further, as the memory contents of the storage unit 5 of the receiver A, when the above-mentioned 1 transmitter number to 5 date (time) are, for example, the following values (1) to (5), respectively. ) 1 Transmitter number ... 1 (2) 2 Transmission counter value ... 18 (3) 3 Alarm type ... 10 (4) 4 Reception level ... 1180 mV (5) 5 date (time) FIG. 5 shows an embodiment in the case of 13:08 on August 26, 1999. However, in the figure, (1) to (3) are shown.

Here, the history information is confirmed by recognizing the reading timing of the LED lighting content and the step completion point by voice. Beep sound… Read the LED lighting content at the time of this sound. Beep sound: When this sound is heard, the step is completed. By pressing the switch SW for 2 seconds or more, it is possible to jump to the next reception history.

[0016]

According to the first and second aspects of the present invention, since the display LED and the memory already provided in the receiver are used, a transmission circuit for maintenance is not required, and the reception history can be saved. By knowing this, it is possible to efficiently investigate the cause of the trouble in the market.

[Brief description of the drawings]

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

FIG. 2 is an external view of a receiver of the wireless system and a diagram showing transmission data of a transmitter.

FIG. 3 is an internal circuit block diagram of a receiver of the wireless system.

FIG. 4 is a diagram illustrating display of reception history information of a receiver of the wireless system.

FIG. 5 is a diagram illustrating display of reception history information of a receiver of the wireless system.

FIG. 6 is a system diagram showing an embodiment of a conventional wireless system.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 antenna 2 RF terminal 3 wireless receiving unit 4 signal processing unit 5 data storage unit 6 display unit 7 operation unit 8 audio amplifier 9 speaker A receiver (master unit) C, C-1, C-2 transmitter (slave unit) LED light emitting element SP speaker SW switch

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Nakajo 1048, Kazuma, Kadoma, Osaka Prefecture F-term in Matsushita Electric Works, Ltd. (reference) 5K067 BB21 DD51 EE02 EE06 EE12 EE35 FF02 FF06 FF16 FF24 HH23 LL01

Claims (2)

[Claims] 1. In a wireless system comprising a transmitter, a receiver, and a repeater, the receiver transmits history information such as a reception time and a reception level together with data transmitted from the transmitter. While accumulating in the storage unit,
A wireless system comprising switching means for switching from a reception mode to a maintenance mode. 2. The wireless system according to claim 1, wherein the receiver has a display unit for maintenance for displaying data and history information from the transmitter in a maintenance mode.