JPS6472628A - Security radio communication system equipment - Google Patents
Security radio communication system equipmentInfo
- Publication number
- JPS6472628A JPS6472628A JP62228519A JP22851987A JPS6472628A JP S6472628 A JPS6472628 A JP S6472628A JP 62228519 A JP62228519 A JP 62228519A JP 22851987 A JP22851987 A JP 22851987A JP S6472628 A JPS6472628 A JP S6472628A
- Authority
- JP
- Japan
- Prior art keywords
- antennas
- electric field
- radio equipment
- transponder radio
- communication system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005684 electric field Effects 0.000 abstract 4
- 230000005856 abnormality Effects 0.000 abstract 2
Abstract
PURPOSE:To increase the frequency receiving a strong electric field by providing two antennas to a transponder radio equipment and switching the antennas. CONSTITUTION:Antennas 6a, 6b are switched at a time interval such as a time interval a little longer than an abnormality alarming data length of a transponder radio equipment terminal 1 after the end of confirming test automatically. Thus, the alarming data from the transponder radio equipment 1 is received by an antenna with a stronger electric field in the antennas 6a, 6b. Then the received signal is given to a central management center from a controller 2 through a wired line and the abnormality is informed. Thus, the frequency of receiving a strong electric field of the transponder radio equipment is increased even with the fluctuation of the electric field.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62228519A JPS6472628A (en) | 1987-09-14 | 1987-09-14 | Security radio communication system equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62228519A JPS6472628A (en) | 1987-09-14 | 1987-09-14 | Security radio communication system equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6472628A true JPS6472628A (en) | 1989-03-17 |
Family
ID=16877695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62228519A Pending JPS6472628A (en) | 1987-09-14 | 1987-09-14 | Security radio communication system equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6472628A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0455841U (en) * | 1990-09-14 | 1992-05-13 | ||
GB2348085B (en) * | 1999-01-20 | 2003-04-09 | Ibm | Personal area network (pan) communication |
JP2008092139A (en) * | 2006-09-29 | 2008-04-17 | Sony Corp | System and apparatus for wireless communication |
-
1987
- 1987-09-14 JP JP62228519A patent/JPS6472628A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0455841U (en) * | 1990-09-14 | 1992-05-13 | ||
GB2348085B (en) * | 1999-01-20 | 2003-04-09 | Ibm | Personal area network (pan) communication |
JP2008092139A (en) * | 2006-09-29 | 2008-04-17 | Sony Corp | System and apparatus for wireless communication |
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