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JP2003032151A - Radio receiver - Google Patents

Radio receiver

Info

Publication number
JP2003032151A
JP2003032151A JP2001219039A JP2001219039A JP2003032151A JP 2003032151 A JP2003032151 A JP 2003032151A JP 2001219039 A JP2001219039 A JP 2001219039A JP 2001219039 A JP2001219039 A JP 2001219039A JP 2003032151 A JP2003032151 A JP 2003032151A
Authority
JP
Japan
Prior art keywords
standby
machine
unit
active
reception
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
Application number
JP2001219039A
Other languages
Japanese (ja)
Inventor
Nobuaki Fujiwara
伸陽 藤原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu General Ltd
Original Assignee
Fujitsu General Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu General Ltd filed Critical Fujitsu General Ltd
Priority to JP2001219039A priority Critical patent/JP2003032151A/en
Publication of JP2003032151A publication Critical patent/JP2003032151A/en
Pending legal-status Critical Current

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  • Circuits Of Receivers In General (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a radio receiver that is provided with an inspection means to extend the service life of a standby device. SOLUTION: The operating flowchart of the radio receiver includes a step ST20 of applying power to an active device 10, a step ST21 of awaiting detection of a received signal, a step ST22 of application of power to the standby device 11, a step ST25 of comparing whether the active device 10 has the same reception level as that of the standby device 11 when the received signal is detected (ST24-Y), a step ST26 of interrupting power of the standby device 11 when they are equal to each other (ST25-Y), a step ST21 of preparing for a succeeding inspection after waiting for a prescribed time (ST27), a step ST29 of interrupting the power of the standby device 11 when they are not equal (ST25-N) and when the reception level of the standby device 11 is smaller than that of the active device 10 (ST28-N), and a step ST21 of preparing for a succeeding inspection.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、無線受信装置に係
わり、より詳細には、現用機と予備機とからなる2台の
受信機を検査して切り換える機能を備えた無線受信装置
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless receiver, and more particularly to a wireless receiver having a function of inspecting and switching between two receivers, which are an active machine and a standby machine.

【0002】[0002]

【従来の技術】従来、無線受信装置は、図3(A)に示
すブロック図で構成されている。通常、無線受信装置
は、主として運用される無線受信機である現用機50
と、バックアップ用として補助的に運用される予備機5
1と、現用機50と予備機51との動作を検査する検査
手段とを備え、同検査手段の結果により現用機50と予
備機51とを切り換えて運用する機能を備えている。こ
の従来例での無線受信装置は、同じ機能を備え、常に電
源が投入され、それぞれにアンテナ52が接続された現
用機50および予備機51と、現用機50と予備機51
とのそれぞれの受信レベルを比較する受信レベル比較部
53と、入力した切換信号により、現用機50と予備機
51とから出力される受信復調信号を選択して指令台
(図示せず)へ出力する選択部54と、受信レベル比較
部53からの比較結果を入力し、選択部54へ切換信号
を出力する制御部55とから構成されている。現用機5
0と予備機51とは常に同じ周波数を同時に受信してお
り、それぞれの受信機から出力された受信レベルを表す
信号、例えばAGC(Auto Gain Control)信号が受信レ
ベル比較部53で比較され、その結果が制御部55へ伝
えられる。2台の受信機は常に同じ信号を受信している
ため、比較した結果は常に等しくなければならない。従
って、もしその受信レベルにおいて、現用機50が予備
機51より低いレベルであれば、何らかの故障により現
用機50の感度が低下していると考えられる。
2. Description of the Related Art Conventionally, a radio receiving apparatus has a block diagram shown in FIG. Usually, the wireless receiver is an active device 50 that is a wireless receiver that is mainly operated.
And a backup machine 5 that is operated as a backup
1 and an inspection means for inspecting the operation of the active machine 50 and the standby machine 51, and a function of switching the active machine 50 and the standby machine 51 to operate according to the result of the inspection means. The wireless receiving device in this conventional example has the same function, is always powered on, and has an active device 50 and a standby device 51 connected to an antenna 52, respectively, and an active device 50 and a standby device 51.
The reception demodulation signal output from the active machine 50 and the standby machine 51 is selected by the reception level comparison unit 53 that compares the reception levels of the above and the reception level comparison unit 53 and is output to the command board (not shown). And a control unit 55 that inputs the comparison result from the reception level comparison unit 53 and outputs a switching signal to the selection unit 54. Working machine 5
0 and the standby unit 51 always receive the same frequency at the same time, and a signal indicating the reception level output from each receiver, for example, an AGC (Auto Gain Control) signal, is compared by the reception level comparison unit 53, and The result is transmitted to the control unit 55. Since the two receivers are always receiving the same signal, the comparison result should always be equal. Therefore, if the reception level of the active machine 50 is lower than that of the standby machine 51, it is considered that the sensitivity of the active machine 50 is lowered due to some failure.

【0003】図3(B)は前述の構成での検査手順を表
すフローチャートである。これと図3(A)を用いて動
作を説明する。なお文中のST番号はフローチャートの
ステートメントを表す番号である。まず最初に現用機5
0と予備機51との電源を投入する(ST70)。つぎ
に何らかの交信での受信信号が検出されるまで待つ(S
T71)。受信信号が検出されると受信レベル比較部5
3で現用機50と予備機51との受信レベルを比較し
(ST72)、等しいならば異常なしと判断し、次の検
査に備える(ST72−Y)。等しくなければどちらか
の受信機が故障であると考えられるので、その大小を比
較する(ST73)。現用機50より予備機51の受信
レベルが大きければ(ST73−Y)現用機50の故障
であり、制御部55は選択部54へ切換の制御信号を送
り、指令台へ送るべき復調信号を、現用機50から予備
機51へ選択部54で切り換えて出力する(ST7
4)。必要があれば、現用機50の電源を切断してこれ
を修理し(ST75)、次の検査に備える(ST7
1)。また、現用機50より予備機51の受信レベルが
小さければ(ST73−N)予備機51の故障であり、
予備機51を修理し(ST76)、次の検査に備える
(ST71)。なお、点線で囲まれたST75、ST7
6は制御とは直接関係なく、管理者(図示せず)が行な
うべき作業を示している。
FIG. 3B is a flow chart showing the inspection procedure in the above-mentioned configuration. The operation will be described with reference to this and FIG. The ST number in the text is a number representing the statement of the flowchart. First of all, the active machine 5
0 and the standby device 51 are turned on (ST70). Next, it waits until a reception signal for some communication is detected (S
T71). When the reception signal is detected, the reception level comparison unit 5
In step 3, the reception levels of the active device 50 and the standby device 51 are compared (ST72). If they are equal, it is determined that there is no abnormality, and the next inspection is prepared (ST72-Y). If they are not equal to each other, it is considered that one of the receivers is out of order, so the sizes are compared (ST73). If the reception level of the standby device 51 is higher than that of the active device 50 (ST73-Y), the active device 50 has a failure, and the control unit 55 sends a switching control signal to the selection unit 54 and sends a demodulation signal to be sent to the command stand. The selection unit 54 switches from the active machine 50 to the standby machine 51 and outputs (ST7).
4). If necessary, the power of the active machine 50 is cut off and repaired (ST75), and the next inspection is prepared (ST7).
1). Further, if the reception level of the standby device 51 is lower than that of the active device 50 (ST73-N), the standby device 51 has failed,
The standby machine 51 is repaired (ST76) and prepared for the next inspection (ST71). In addition, ST75 and ST7 surrounded by a dotted line
Reference numeral 6 indicates a work to be performed by an administrator (not shown) regardless of the control.

【0004】しかしながら、現用機50と予備機51と
の電源は常に投入されたままであり、予備機51の寿命
は現用機50のそれとほぼ同じになるため、経済性や信
頼性に問題があった。
However, since the power supplies of the active machine 50 and the standby machine 51 are always kept on, and the life of the standby machine 51 is almost the same as that of the active machine 50, there is a problem in economical efficiency and reliability. .

【0005】[0005]

【発明が解決しようとする課題】本発明は以上述べた問
題点を解決し、予備機の寿命を伸ばすための検査手段を
備えた無線受信装置を提供することを目的としている。
SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a radio receiving apparatus equipped with an inspection means for extending the life of a spare machine.

【0006】[0006]

【課題を解決するための手段】本発明は、上記問題点を
解決するため、主として運用される無線受信機である現
用機と、バックアップ用として補助的に運用される予備
機と、前記現用機と前記予備機との動作を検査する検査
手段とを備え、同検査手段の結果により前記現用機と前
記予備機とを切り換えて運用する無線受信装置におい
て、前記検査手段は、前記現用機と前記予備機とのそれ
ぞれの受信レベルを比較する受信レベル比較部と、入力
した切換信号により、前記現用機と前記予備機とから出
力される受信復調信号を選択して出力する選択部と、前
記現用機と前記予備機との電源を制御し、前記受信レベ
ル比較部からの比較結果を入力し、前記選択部へ前記切
換信号を出力する制御部とからなり、前記現用機が前記
選択部で選択されて運用され、前記現用機の受信レベル
が所定の値を越えたとき、前記制御部が前記予備機の電
源を投入し、前記検査を実施する方法とする。
SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a working machine which is a radio receiver which is mainly used, a spare machine which is supplementarily operated for backup, and the working machine. And a standby unit for inspecting the operation of the standby unit, wherein the inspection unit switches the active unit and the standby unit to operate according to the result of the inspection unit. A reception level comparison unit for comparing respective reception levels with the standby device; a selection unit for selecting and outputting a reception demodulated signal output from the active device and the standby device according to the input switching signal; Control unit for controlling the power supply between the receiver and the standby unit, inputting the comparison result from the reception level comparing unit, and outputting the switching signal to the selecting unit, and the working unit is selected by the selecting unit. Been Is use, when said reception level of the working machine exceeds a predetermined value, the control unit on the power of the spare machine, a method of performing the test.

【0007】また、前記制御部は、比較した前記受信レ
ベルにおいて、前記現用機と前記予備機が同じレベルで
ある時に、前記予備機の電源を切断する。
Further, the control unit turns off the power supply of the standby machine when the working machine and the standby machine are at the same level at the compared reception level.

【0008】また、前記制御部は、比較した前記受信レ
ベルにおいて、前記現用機より前記予備機が小さい値の
レベルである時に、前記予備機の電源を切断する。
Further, the control unit turns off the power source of the standby unit when the standby unit has a value smaller than the working unit at the compared reception level.

【0009】また、前記制御部は、比較した前記受信レ
ベルにおいて、前記現用機より前記予備機が大きい値で
ある時に、前記現用機の電源を切断するとともに、前記
選択部へ前記切換信号を出力し、前記予備機の復調信号
を前記選択部から出力する。
Further, the control unit turns off the power source of the working machine and outputs the switching signal to the selecting unit when the standby machine has a larger value than the working machine at the compared reception level. Then, the demodulated signal of the spare device is output from the selection unit.

【0010】また、前記制御部は、前記予備機の電源を
投入したのち、一定時間の間に前記現用機の受信レベル
が所定の値を越えないときに、前記予備機の電源を切断
する。
Further, the control unit, after turning on the power of the standby machine, turns off the power of the standby machine when the reception level of the active machine does not exceed a predetermined value within a certain period of time.

【0011】また、前記制御部は前記検査が終了した
後、一定時間の間は次の検査を実施しない。
Further, the control unit does not carry out the next inspection for a certain period of time after the completion of the inspection.

【0012】[0012]

【発明の実施の形態】以下、図面に基づいて本発明によ
る無線受信装置を詳細に説明する。図1は本発明による
無線受信装置の一実施例を示すブロック図である。通
常、無線受信装置は、主として運用される無線受信機で
ある現用機10と、バックアップ用として補助的に運用
される予備機11と、現用機10と予備機11との動作
を検査する検査手段とを備え、同検査手段の結果により
現用機10と予備機11とを切り換えて運用する機能を
備えている。この無線受信装置は、同じ機能を備え、そ
れぞれにアンテナ12が接続された現用機10および予
備機11と、現用機10と予備機11とのそれぞれの受
信レベルを比較する受信レベル比較部13と、入力した
切換信号により、現用機10と予備機11とから出力さ
れる受信復調信号を選択して指令台(図示せず)へ出力
する選択部14と、受信レベル比較部13からの比較結
果を入力して選択部14へ切換信号を出力するととも
に、現用機10と予備機11とのそれぞれの電源を制御
する制御部15とから構成されている。
BEST MODE FOR CARRYING OUT THE INVENTION A radio receiver according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a wireless receiver according to the present invention. Usually, the wireless receiving device is a working unit that is a wireless receiver that is mainly operated, a standby unit 11 that is used as a backup auxiliary, and an inspection unit that inspects the operations of the active unit 10 and the standby unit 11. And a function of switching between the active machine 10 and the standby machine 11 and operating them according to the result of the inspection means. This wireless reception device has the same function and has an active machine 10 and a standby machine 11 each having an antenna 12 connected thereto, and a reception level comparison unit 13 for comparing the reception levels of the active machine 10 and the standby machine 11. The comparison result from the reception level comparison unit 13 and the selection unit 14 that selects the reception demodulation signal output from the active machine 10 and the standby machine 11 according to the input switching signal and outputs the selected reception demodulation signal to the command stand (not shown). Is input and a switching signal is output to the selection unit 14, and a control unit 15 that controls the respective power sources of the active machine 10 and the standby machine 11 is configured.

【0013】それぞれの電源が投入された時の現用機1
0と予備機11とは同じ周波数を受信しており、それぞ
れの受信機から出力された受信レベルを表す信号、例え
ばAGC(Auto Gain Control)信号が受信レベル比較部
13で比較され、その結果が制御部15へ伝えられる。
同じ信号を受信している2台の受信機の受信レベルの比
較結果は常に等しくなければならない。従って、もしそ
の受信レベルにおいて、現用機10が予備機11より低
いレベルであれば、何らかの故障により現用機10の感
度が低下していると考えられる。
Working machine 1 when each power source is turned on
0 and the standby device 11 receive the same frequency, and a signal indicating the reception level output from each receiver, for example, an AGC (Auto Gain Control) signal, is compared by the reception level comparison unit 13, and the result is It is transmitted to the control unit 15.
The reception level comparison results of two receivers receiving the same signal must always be equal. Therefore, if the level of the working machine 10 is lower than that of the standby machine 11 at the reception level, it is considered that the sensitivity of the working machine 10 is lowered due to some failure.

【0014】図2は前述の構成での検査手順を表すフロ
ーチャートである。これと図1を用いて動作を説明す
る。なお文中のST番号はフローチャートのステートメ
ントを表す番号である。まず最初に現用機10の電源を
投入する(ST20)。つぎに何らかの交信での受信信
号が検出されるまで待つ(ST21)。受信信号が検出
されると予備機11の電源を投入する(ST22)。こ
こで、予備機11で安定した受信が可能となるまで1〜
2分必要であり、この安定するまでの2分間は、予備機
のみが待機する(ST22a)。通常の交信は10秒程
度の送受信が繰り返して行なわれる。また、3〜4分程
度で一つの用件が完了し、交信が打ち切られてしまう場
合がある。従ってまず、最初の受信信号を検出してから
5分が経過したかを判断する(ST23)。経過してい
れば(ST23−Y)、今回の交信での検査を中止し、
予備機11の電源を切断(ST34)し、次の検査に備
える(ST21)。
FIG. 2 is a flow chart showing the inspection procedure in the above configuration. The operation will be described with reference to this and FIG. The ST number in the text is a number representing the statement of the flowchart. First, the power of the active machine 10 is turned on (ST20). Next, it waits until a reception signal for some communication is detected (ST21). When the received signal is detected, the standby device 11 is powered on (ST22). Here, 1 to 1 until the standby device 11 becomes capable of stable reception.
Two minutes are required, and only the standby machine waits for 2 minutes until this stabilization (ST22a). In normal communication, transmission and reception are repeated for about 10 seconds. In addition, one message may be completed in about 3 to 4 minutes and communication may be terminated. Therefore, first, it is determined whether 5 minutes have passed since the first received signal was detected (ST23). If the time has passed (ST23-Y), the inspection in this communication is stopped,
The standby machine 11 is powered off (ST34) to prepare for the next inspection (ST21).

【0015】5分が経過していなければ(ST23−
N)、交信途中での受信信号が検出されるまで、5分の
経過を監視しながら待つ(ST24−N)。ここで、受
信信号が検出されれば(ST24ーY)、現用機10と
予備機11とが同じ受信レベルかどうかを比較し(ST
25)、等しいならば(ST25−Y)異常なしと判断
し、予備機11の電源を切断(ST26)し、一定時間
待機してから(ST27)、次の検査に備える(ST2
1)。現用機10と予備機11との受信レベルが等しく
なければ(ST25−N)、どちらかの受信機が故障で
あると考えられるため、次にその大小を比較する(ST
28)。現用機10より予備機11の受信レベルが小さ
ければ(ST28−N)予備機11の故障であるため、
予備機11の電源を切断(ST29)し、必要があれば
予備機11の修理を行い(ST30)、次の検査に備え
る(ST21)。
If 5 minutes have not elapsed (ST23-
N), waits while monitoring the progress of 5 minutes until a received signal is detected during communication (ST24-N). Here, if a received signal is detected (ST24-Y), it is compared whether the active device 10 and the standby device 11 have the same received level (ST).
25) If they are the same (ST25-Y), it is determined that there is no abnormality, the standby device 11 is powered off (ST26), and after waiting for a certain time (ST27), the next inspection is prepared (ST2).
1). If the reception levels of the active device 10 and the standby device 11 are not equal (ST25-N), it is considered that one of the receivers is out of order, so the sizes are compared (ST).
28). If the reception level of the standby device 11 is lower than that of the active device 10 (ST28-N), the standby device 11 has a failure.
The standby unit 11 is powered off (ST29), and if necessary, the standby unit 11 is repaired (ST30) to prepare for the next inspection (ST21).

【0016】現用機10より予備機11の受信レベルが
大きければ(ST28−Y)現用機10の故障なので、
制御部15は選択部14へ切換の制御信号を送り、指令
台へ送るべき復調信号を、現用機10から予備機11へ
選択部14で切り換えて出力する(ST31)。そし
て、現用機10の電源を切断(ST32)し、必要があ
れば、現用機10を修理し(ST33)、次の検査に備
える(ST21)。なお、点線で囲まれたST30、S
T33は制御とは直接関係なく、管理者(図示せず)が
行なうべき作業を示している。
If the reception level of the standby device 11 is higher than that of the active device 10 (ST28-Y), the active device 10 has a failure.
The control unit 15 sends a switching control signal to the selection unit 14, and the demodulation signal to be sent to the command board is switched by the selection unit 14 from the active machine 10 to the standby machine 11 and output (ST31). Then, the power of the active machine 10 is cut off (ST32), and if necessary, the active machine 10 is repaired (ST33) and the next inspection is prepared (ST21). In addition, ST30, S surrounded by a dotted line
T33 indicates a work to be performed by an administrator (not shown), which is not directly related to control.

【0017】以上説明した方法により、予備機11を間
欠的に動作させ、この動作中にのみ故障の診断を行なう
ため、予備機11の寿命を伸ばすことができる。また、
現用機10が選択部14で選択されて運用され、現用機
10の受信レベルが所定の値を越えたとき、制御部15
が予備機11の電源を投入するため、交信がないときに
予備機11の電源を切断しておけるため、消費電力を節
約することができる。また、制御部15は、比較した受
信レベルにおいて、現用機10と予備機11が同じレベ
ルである時に、予備機11の電源を切断するため、故障
がない予備機11の寿命を伸ばすことができる。また、
制御部15は、比較した受信レベルにおいて、現用機1
0より予備機11が小さい値のレベルである時に、ただ
ちに予備機11の電源を切断するため、故障した予備機
11の被害の拡大を防ぐことができる。また、制御部1
5は、比較した受信レベルにおいて、現用機10より予
備機11が大きい値である時に、現用機10の電源をた
だちに切断するとともに、選択部14へ切換信号を出力
し、予備機11の復調信号を選択部から出力するため、
故障した現用機10の被害の拡大を防ぐことができると
ともに、すばやく予備機11への切換を行なうことがで
きる。また、制御部15は、予備機11の電源を投入し
たのち、一定時間の間に現用機の受信レベルが所定の値
を越えないときに、予備機11の電源を切断することに
より、交信が終了してしまった場合に、予備機11の消
費電力を節約することができる。また、制御部15は検
査が終了した後、一定時間の間は次の検査を実施しない
ようにすることにより、長い交信に反応して短時間の間
に重複した検査を実施しないようにし、予備機11の寿
命を伸ばすとともに、消費電力を節約することができ
る。
By the method described above, the spare machine 11 is intermittently operated, and the failure is diagnosed only during this operation, so that the life of the spare machine 11 can be extended. Also,
When the active machine 10 is selected and operated by the selection unit 14 and the reception level of the active machine 10 exceeds a predetermined value, the control unit 15
Since the standby device 11 is powered on, the standby device 11 can be powered off when there is no communication, so that power consumption can be saved. Further, the control unit 15 cuts off the power source of the standby device 11 when the working device 10 and the standby device 11 are at the same level at the compared reception levels, so that the life of the standby device 11 without failure can be extended. . Also,
The control unit 15 determines that the active device 1
When the level of the standby machine 11 is smaller than 0, the power source of the standby machine 11 is immediately cut off, so that the damage of the failed standby machine 11 can be prevented. In addition, the control unit 1
5 indicates that when the standby device 11 has a larger value than the active device 10 at the compared reception level, the power of the active device 10 is immediately turned off, and a switching signal is output to the selection unit 14 to demodulate the standby device 11. Is output from the selection unit,
It is possible to prevent the damage of the working machine 10 that has failed from spreading and to quickly switch to the standby machine 11. Further, the control unit 15 cuts off the power supply of the standby device 11 when the reception level of the active device does not exceed a predetermined value for a certain period of time after the power supply of the standby device 11 is turned on. When the process is finished, the power consumption of the standby machine 11 can be saved. In addition, the control unit 15 does not perform the next inspection for a certain period of time after the inspection is completed, thereby preventing a duplicate inspection from being performed in a short time in response to a long communication, and a preliminary operation. The life of the machine 11 can be extended and the power consumption can be saved.

【0018】[0018]

【発明の効果】以上説明したように、本発明による無線
受信装置によれば、検査手段が、現用機と予備機とのそ
れぞれの受信レベルを比較する受信レベル比較部と、入
力した切換信号により、現用機と予備機とから出力され
る受信復調信号を選択して出力する選択部と、現用機と
予備機との電源を制御し、受信レベル比較部からの比較
結果を入力し、選択部へ切換信号を出力する制御部とか
らなり、現用機が選択部で選択されて運用され、現用機
の受信レベルが所定の値を越えたとき、制御部が予備機
の電源を投入し、検査を実施する方法であることによ
り、予備機を間欠的に動作させ、この動作中にのみ故障
の診断を行なうため、予備機の寿命を伸ばすことができ
るとともに消費電力を節約することができる。
As described above, according to the radio receiving apparatus of the present invention, the inspection means uses the reception level comparing section for comparing the reception levels of the working machine and the standby machine, and the input switching signal. , A selector for selecting and outputting a received demodulated signal output from the working machine and the standby machine, and controlling the power supply of the working machine and the standby machine, inputting the comparison result from the reception level comparing section, and selecting the selecting section. Control unit that outputs a switching signal to the operating unit.When the working unit is selected and operated by the selecting unit and the receiving level of the working unit exceeds a predetermined value, the control unit turns on the power of the standby unit and inspects it. By performing the method described above, the standby machine is intermittently operated, and the failure diagnosis is performed only during this operation. Therefore, the life of the standby machine can be extended and the power consumption can be saved.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による無線受信装置の一実施例を示すブ
ロック図である。
FIG. 1 is a block diagram showing an embodiment of a wireless reception device according to the present invention.

【図2】図1の動作を説明するためのフローチャートで
ある。
FIG. 2 is a flowchart for explaining the operation of FIG.

【図3】従来の無線受信装置を示す(A)はブロック
図、(B)は(A)の動作を説明するためのフローチャ
ートである。
3A is a block diagram showing a conventional wireless reception device, and FIG. 3B is a flowchart for explaining the operation of FIG.

【符号の説明】[Explanation of symbols]

10 現用機 11 予備機 12 アンテナ 13 受信レベル比較部 14 選択部 15 制御部 10 Working machine 11 spare aircraft 12 antennas 13 Reception level comparison unit 14 Selector 15 Control unit

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 主として運用される無線受信機である現
用機と、バックアップ用として補助的に運用される予備
機と、前記現用機と前記予備機との動作を検査する検査
手段とを備え、同検査手段の結果により前記現用機と前
記予備機とを切り換えて運用する無線受信装置におい
て、 前記検査手段は、前記現用機と前記予備機とのそれぞれ
の受信レベルを比較する受信レベル比較部と、入力した
切換信号により、前記現用機と前記予備機とから出力さ
れる受信復調信号を選択して出力する選択部と、前記現
用機と前記予備機との電源を制御し、前記受信レベル比
較部からの比較結果を入力し、前記選択部へ前記切換信
号を出力する制御部とからなり、 前記現用機が前記選択部で選択されて運用され、前記現
用機の受信レベルが所定の値を越えたとき、前記制御部
が前記予備機の電源を投入し、前記検査を実施する方法
としてなることを特徴とする無線受信装置。
1. An active machine, which is a radio receiver mainly operated, a standby machine which is auxiliary operated for backup, and an inspection means for inspecting the operation of the active machine and the standby machine, In a radio receiving device that operates by switching between the active machine and the standby machine according to the result of the inspection means, the inspection means includes a reception level comparison unit that compares the reception levels of the active machine and the standby machine. , A selector for selecting and outputting a reception demodulation signal output from the working machine and the standby machine according to the input switching signal, and controlling the power supply of the working machine and the standby machine to compare the reception level And a control unit for outputting the switching signal to the selecting unit, wherein the working unit is selected and operated by the selecting unit, and the receiving level of the working unit has a predetermined value. Crossed Come, the controller is powered on the spare machine, radio receiving apparatus characterized by comprising a method of performing the test.
【請求項2】 前記制御部は、比較した前記受信レベル
において、前記現用機と前記予備機が同じレベルである
時に、前記予備機の電源を切断してなることを特徴とす
る請求項1記載の無線受信装置。
2. The control unit turns off the power source of the standby unit when the working unit and the standby unit are at the same level at the compared reception levels. Wireless receiver.
【請求項3】 前記制御部は、比較した前記受信レベル
において、前記現用機より前記予備機が小さい値のレベ
ルである時に、前記予備機の電源を切断してなることを
特徴とする請求項1または請求項2記載の無線受信装
置。
3. The control unit turns off the power source of the standby unit when the standby unit has a level that is smaller than the working unit at the compared reception level. The wireless receiving device according to claim 1 or 2.
【請求項4】 前記制御部は、比較した前記受信レベル
において、前記現用機より前記予備機が大きい値である
時に、前記現用機の電源を切断するとともに、前記選択
部へ前記切換信号を出力し、前記予備機の復調信号を前
記選択部から出力してなることを特徴とする請求項1乃
至請求項3記載の無線受信装置。
4. The control unit turns off the power source of the working machine and outputs the switching signal to the selecting unit when the standby machine has a larger value than the working machine at the compared reception level. The radio receiving apparatus according to claim 1, wherein the demodulated signal of the standby device is output from the selection unit.
【請求項5】 前記制御部は、前記予備機の電源を投入
したのち、一定時間の間に前記現用機の受信レベルが所
定の値を越えないときに、前記予備機の電源を切断して
なることを特徴とする請求項1乃至請求項4記載の無線
受信装置。
5. The control unit, after turning on the power of the standby unit, turns off the power of the standby unit when the reception level of the active unit does not exceed a predetermined value within a certain period of time. The wireless reception device according to claim 1, wherein:
【請求項6】 前記制御部は前記検査が終了した後、一
定時間の間は次の検査を実施しないことを特徴とする請
求項1乃至請求項5記載の無線受信装置。
6. The wireless reception device according to claim 1, wherein the control unit does not perform the next inspection for a certain period of time after the inspection is completed.
JP2001219039A 2001-07-19 2001-07-19 Radio receiver Pending JP2003032151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001219039A JP2003032151A (en) 2001-07-19 2001-07-19 Radio receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001219039A JP2003032151A (en) 2001-07-19 2001-07-19 Radio receiver

Publications (1)

Publication Number Publication Date
JP2003032151A true JP2003032151A (en) 2003-01-31

Family

ID=19053113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001219039A Pending JP2003032151A (en) 2001-07-19 2001-07-19 Radio receiver

Country Status (1)

Country Link
JP (1) JP2003032151A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174028A (en) * 1983-03-23 1984-10-02 Nec Corp Switching system of device in current use to spare one
JPH1041865A (en) * 1996-07-19 1998-02-13 Nec Corp Diversity receiving device
JPH10135873A (en) * 1996-10-29 1998-05-22 Nec Corp Transmission output control system
JPH11261451A (en) * 1998-03-12 1999-09-24 Fujitsu Ltd Transmission equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174028A (en) * 1983-03-23 1984-10-02 Nec Corp Switching system of device in current use to spare one
JPH1041865A (en) * 1996-07-19 1998-02-13 Nec Corp Diversity receiving device
JPH10135873A (en) * 1996-10-29 1998-05-22 Nec Corp Transmission output control system
JPH11261451A (en) * 1998-03-12 1999-09-24 Fujitsu Ltd Transmission equipment

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