JPS5823781B2 - Radio switching method for multi-channel access radio telephone equipment - Google Patents
Radio switching method for multi-channel access radio telephone equipmentInfo
- Publication number
- JPS5823781B2 JPS5823781B2 JP54012245A JP1224579A JPS5823781B2 JP S5823781 B2 JPS5823781 B2 JP S5823781B2 JP 54012245 A JP54012245 A JP 54012245A JP 1224579 A JP1224579 A JP 1224579A JP S5823781 B2 JPS5823781 B2 JP S5823781B2
- Authority
- JP
- Japan
- Prior art keywords
- radio
- switching
- channel
- channel access
- switching method
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Description
【発明の詳細な説明】
本発明は、マルチチャネルアクセス無線電話装置におい
て、２台の無線機の切替方式の改良に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved method for switching between two radios in a multi-channel access radiotelephone device.
従来例のマルチチャネルアクセス無線電話装置のブロッ
ク図を第１図に示す。A block diagram of a conventional multi-channel access radio telephone device is shown in FIG.
１は空中機、２は１号マルチチャネル無線機３と、２号
マルチチャネル無線機４と空中機１とを分岐、切替接続
する空中様分岐、切替部、５は無線機３，４と通信制御
装置８との接続を切替える切替部、６は無線機障害検出
回路、７は切替制御部、９は通話装置を示す。1 is an airborne aircraft, 2 is an aerial-like branch and switching unit that branches and switches between the No. 1 multi-channel radio device 3, the No. 2 multi-channel radio device 4 and the aerial device 1, and 5 is a communication unit that communicates with the radio devices 3 and 4. A switching unit switches the connection with the control device 8, 6 is a wireless device failure detection circuit, 7 is a switching control unit, and 9 is a communication device.
次にこの動作を説明する。Next, this operation will be explained.
今、使用中の１号マルチチャネル無線機３のある任意の
チャネルに障害が発生した場合、この障害は、たとえば
送信出力を直流検波した電圧が、任意の値に設定した基
準電圧以下になった場合を障害として判定する無線機障
害検出回路６で検出され、切替制御部７より切替信号が
空中線分岐、切替部２及び無線機３゜４の切替部５に送
出され、それぞれの接続が２号マルチチャネル無線機４
に切替えられる。If a fault occurs in any channel of the No. 1 multi-channel radio 3 that is currently in use, this fault may be caused by, for example, the voltage obtained by DC detection of the transmission output being lower than the reference voltage set to an arbitrary value. This is detected by the radio device fault detection circuit 6, which determines the case as a fault, and the switching control section 7 sends a switching signal to the antenna branch, the switching section 2, and the switching section 5 of the radio device 3. Multi-channel radio 4
can be switched to
ところがマルチチャネルアクセスシステムにおいては、
チャネルは常に数百ミリ秒で切替えられて絶えずチャネ
ルが循環している。However, in multichannel access systems,
Channels are constantly cycling, switching channels every few hundred milliseconds.
従って、２号無線機の任意のチャネルにも障害が発生し
た場合、接続は再び１号無線機に切替わり、ここで、チ
ャネルが循環して再び１号無線機の障害チャネルを検出
すると、再度２号無線機に接続が切替わってしまう。Therefore, if any channel of radio No. 2 also fails, the connection will switch back to radio No. 1, where if the channels cycle and detect the faulty channel of radio No. 1 again, Connection switches to No. 2 radio.
このように、１号、２号マルチチャネル無線機双方に障
害が発生した場合、チャネルの循環１周ごとに、１号か
ら２号、２号から１号へと際限なく切替えられ、誤動作
や、切替部の寿命短縮等の不都合があった。In this way, if a failure occurs in both the No. 1 and No. 2 multichannel radios, the channel will be switched endlessly from No. 1 to No. 2 and from No. 2 to No. 1 every time the channel circulates, causing malfunctions and There were disadvantages such as a shortened lifespan of the switching section.
本発明はこれらの欠点を除去するため、切替回数を計数
して、特定回数の切替えが行なわれた場合は、以後の切
替えを停止するようにしたものである。In order to eliminate these drawbacks, the present invention is designed to count the number of switching operations and, when switching has been performed a certain number of times, to stop subsequent switching.
第２図は、本発明の実施例を示すマルチチャネルアクセ
ス無線装置のブロック図であって、第１図七同−符号は
同一品名、１０は切替回数を計数する計数回路である。FIG. 2 is a block diagram of a multi-channel access radio device showing an embodiment of the present invention, in which the same reference numerals as shown in FIG.
計数回路１０は切替制御部γから送出する切替信号の送
出回数を計数し、任意に設定した数値に切替回数が達し
た場合、切替制御部７から切替信号を送出を禁止するも
のである。The counting circuit 10 counts the number of times the switching signal is sent out from the switching control section γ, and prohibits the switching control section 7 from sending out the switching signal when the number of switching times reaches an arbitrarily set value.
このように計数回路１０を従来の装置に付加することに
より、１号、２号無線機双方に障害が発生した場合、際
限なく１号から２号、２号から１号へと接続が切替わる
ことを防止することができる。By adding the counting circuit 10 to the conventional device in this way, if a failure occurs in both No. 1 and No. 2 radios, the connection will be switched endlessly from No. 1 to No. 2 and from No. 2 to No. 1. This can be prevented.
また切替禁止の表示手段によって障害発生を確認できる
。Furthermore, the occurrence of a failure can be confirmed by the switching prohibition display means.
計数方法は相互に切替わる回数を計数しても、１号から
２号又は２号から１号へと切替わるときのみ計数しても
効果は同じである。The effect is the same whether the counting method counts the number of mutual switches or counts only when switching from No. 1 to No. 2 or from No. 2 to No. 1.
なお、１号、２号切替が停止した場合でも、障害チャネ
ルを飛び越して、チャネルを循環させることにより障害
チャネルの他の正常なチャネルで、通信ができることは
当然である。Note that even if switching between No. 1 and No. 2 is stopped, it is natural that communication can be performed using a normal channel other than the faulty channel by skipping over the faulty channel and circulating the channels.
以上説明したごとく本発明によれば、無用に繰返す１号
、２号無線機の切替動作を禁止でき、誤動作や切替部の
寿命短縮等を防ぎ、信頼性の向上に寄与すること犬であ
る。As explained above, according to the present invention, it is possible to prohibit the needlessly repeated switching operations of the No. 1 and No. 2 radios, prevent malfunctions and shorten the life of the switching unit, and contribute to improved reliability.
第１図は従来例を示すマルチチャネルアクセス無線電話
装置のブロック図、第２図は本発明の実施例を示すブロ
ック図である。
１・・・・・・空中機、２・・・・・・空中線分岐、切
替部、３・・・・・・１号マルチチャネル無線機、４・
・・・・・２号マルチチャネル無線機、５・・・・・・
切替部、６・・・・・・無線機障害検出回路、７・・・
・・・切替制御部、８・・・・・・通信制御装置、９・
・・・・・通話装置、１０・・・パ・・計数回路。FIG. 1 is a block diagram of a conventional multi-channel access radio telephone device, and FIG. 2 is a block diagram showing an embodiment of the present invention. 1... Aerial aircraft, 2... Antenna branch, switching unit, 3... No. 1 multi-channel radio, 4...
...No. 2 multi-channel radio, 5...
Switching unit, 6...Radio equipment failure detection circuit, 7...
...Switching control unit, 8...Communication control device, 9.
...Telephone device, 10...Pa...Counting circuit.
Claims (1)
に障害がある場合は、自動的に他方の無線機に切替わる
マルチチャネルアクセス無線電話装置において、この無
線電話装置に前記無線機の障害による自動切替えの回数
を計数する計数回路を付加し、前記回数がこの計数回路
に設定した所定設定値を越えると、切替動作を禁止する
ようにしたことを特徴とするマルチチャネルアクセス無
線電話装置の無線機切替方式。1. In a multichannel access radiotelephone device that has two multichannel radios and automatically switches to the other radio if one radio has a failure, this radiotelephone device A multi-channel access radio telephone device characterized in that a counting circuit for counting the number of automatic switching operations is added, and when the number of times exceeds a predetermined value set in the counting circuit, the switching operation is prohibited. Radio switching method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54012245A JPS5823781B2 (en) | 1979-02-07 | 1979-02-07 | Radio switching method for multi-channel access radio telephone equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54012245A JPS5823781B2 (en) | 1979-02-07 | 1979-02-07 | Radio switching method for multi-channel access radio telephone equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55105451A JPS55105451A (en) | 1980-08-13 |
| JPS5823781B2 true JPS5823781B2 (en) | 1983-05-17 |
Family
ID=11799972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54012245A Expired JPS5823781B2 (en) | 1979-02-07 | 1979-02-07 | Radio switching method for multi-channel access radio telephone equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5823781B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5865674A (en) | 1981-10-16 | 1983-04-19 | Ricoh Co Ltd | printer |
| US5380260A (en) * | 1989-08-15 | 1995-01-10 | Smith & Nephew Plc | Medical paddings |
-
1979
- 1979-02-07 JP JP54012245A patent/JPS5823781B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55105451A (en) | 1980-08-13 |
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