JPH0543558B2 - - Google Patents
Info
- Publication number
- JPH0543558B2 JPH0543558B2 JP61036142A JP3614286A JPH0543558B2 JP H0543558 B2 JPH0543558 B2 JP H0543558B2 JP 61036142 A JP61036142 A JP 61036142A JP 3614286 A JP3614286 A JP 3614286A JP H0543558 B2 JPH0543558 B2 JP H0543558B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- radio waves
- transmitter
- emergency stop
- output
- 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 - Lifetime
Links
- 238000001514 detection method Methods 0.000 description 15
- 230000005856 abnormality Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Radio Transmission System (AREA)
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、特に一人乗りの小型船舶において、
操船者が落水した際にその船舶を停止させるよう
にした緊急停止装置の改良に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention is particularly applicable to small single-person vessels,
This invention relates to improvements to an emergency stop device that stops a ship when a ship operator falls into the water.
〈従来の技術〉
操船者が落水した際に、その船舶を停止させて
操船者が水中に取り残されるような事故を防止す
る緊急停止装置は周知であり、例えば操船者が携
帯する発信機から送られる信号電波を船体側に設
けた受信機で常時受信し、発信機からの信号電波
が受信できなくなると船体を停止するようにした
無線式のものが知られている。<Prior art> Emergency stop devices that stop the vessel when a vessel operator falls into the water to prevent an accident in which the vessel operator is left stranded in the water are well known. A wireless type is known in which a receiver installed on the ship's hull constantly receives signal radio waves sent from the transmitter, and when the signal radio waves from the transmitter can no longer be received, the ship is stopped.
〈発明が解決しようとする問題点〉
この種の無線式の緊急停止装置には、漁業無線
に使われる周波数帯を外して例えば40MHzの周波
数帯が選定されるが、無免許で使用できるように
極めて微弱な電波を用いているため、高出力の電
波による妨害を受けやすい。特に小型漁船に搭載
した場合には、緊急停止装置用のアンテナのすぐ
近くに漁業無線用のアンテナが設置されることに
なるため、これによる妨害で誤動作が起きやす
く、停止の必要がないのに船が止まり、航行や作
業に支障を来すという問題が生ずる。<Problem to be solved by the invention> For this type of wireless emergency stop device, a frequency band of 40 MHz, for example, is selected, excluding the frequency band used for fishing radio, but it is possible to use it without a license. Because it uses extremely weak radio waves, it is susceptible to interference by high-power radio waves. Especially when installed on a small fishing boat, the fishing radio antenna will be installed very close to the antenna for the emergency stop device, which can easily cause malfunctions due to interference, even though there is no need to stop the fishing boat. A problem arises in that the ship stops, disrupting navigation and work.
上記の誤動作としては、
１） 高出力の基本波によるブロツク現象による
もの
２） 高出力電波のスプリアスによるもの
があり、２）の問題は適切なフイルタの使用で比
較的容易に改善されるが、１）の問題の解決には
かなり高度な技術を必要とするため装置が高価な
ものとなり、周波数帯の選定だけでは実用的な解
決は困難であつた。 The above malfunctions include: 1) Blocking phenomenon caused by high-output fundamental waves; 2) Spurious effects from high-output radio waves; problem 2) can be remedied relatively easily by using an appropriate filter; Solving the problem of 1) requires fairly advanced technology, which makes the equipment expensive, and it has been difficult to achieve a practical solution by simply selecting a frequency band.
本発明はこのような問題点に着目し、信頼性の
高い緊急停止装置を比較的安価に得ることを目的
としてなされたものである。 The present invention has been made in view of these problems, with the aim of providing a highly reliable emergency stop device at a relatively low cost.
〈問題点を解決するための手段〉
上記の目的を達成するために、本発明の小型船
舶の緊急停止装置は、妨害電波の検出手段を設
け、発信機からの信号電波が受信されず、且つ妨
害電波が検出されている時には緊急停止機能を休
止するようにしている。<Means for Solving the Problems> In order to achieve the above object, the emergency stop device for a small boat of the present invention is provided with means for detecting interference radio waves, so that the signal radio waves from the transmitter are not received, and The emergency stop function is deactivated when interference is detected.
〈作用〉
上記のように、本発明では、妨害電波が検出さ
れている時には、発信機からの信号電波が受信さ
れなくても緊急停止装置が動作しないため、妨害
電波によつて船が停止するということが回避さ
れ、装置の信頼性が確保されるのである。<Operation> As described above, in the present invention, when jamming radio waves are detected, the emergency stop device does not operate even if the signal radio waves from the transmitter are not received, so the ship stops due to the jamming radio waves. This is avoided and the reliability of the device is ensured.
〈実施例〉
次に、図示した一実施例について具体的に説明
する。<Example> Next, an illustrated example will be specifically described.
第１図において、１は発信機、２は受信機であ
る。発信機１は操船者が携帯するもので、所定の
信号をエンコーダ１１でコード化し、発振機１
２、増幅器１３を通じて内蔵されたバーアンテナ
１４から信号電波を発信する。１５はバツテリー
式の電源回路であり、充電用の端子１６が発信機
１のケースの外面に露出した状態で設けられてい
る。 In FIG. 1, 1 is a transmitter and 2 is a receiver. The transmitter 1 is carried by the vessel operator, and encodes a predetermined signal with the encoder 11.
2. A signal radio wave is transmitted from the built-in bar antenna 14 through the amplifier 13. 15 is a battery type power supply circuit, and a charging terminal 16 is provided in an exposed state on the outer surface of the case of the transmitter 1.
受信機２は、外部アンテナ２１で受信した信号
電波を高周波増幅器２２で増幅し、これと発振機
２３の出力とを混合器２４で混合して得た中間周
波数信号を中間周波増幅器２５で増幅して、検波
器２６で検波して低周波増幅器２７で増幅する。
そしてこの低周波増幅器２７の出力信号が、発信
機１から送信されるべき所定の信号と一致してい
るか否かをデコーダ２８で識別し、一致している
時にはデコーダ２８から識別信号Ｓが制御部２９
に対して出力される。この識別信号Ｓは、発信機
１からの信号電波が正常に受信されている限り常
にデコーダ２８から出力される。 The receiver 2 amplifies a signal radio wave received by an external antenna 21 with a high frequency amplifier 22, and mixes this signal with the output of an oscillator 23 in a mixer 24 to obtain an intermediate frequency signal, which is then amplified with an intermediate frequency amplifier 25. Then, the wave is detected by a wave detector 26 and amplified by a low frequency amplifier 27.
The decoder 28 identifies whether or not the output signal of the low frequency amplifier 27 matches a predetermined signal to be transmitted from the transmitter 1. If they match, the decoder 28 sends an identification signal S to the control unit. 29
Output for. This identification signal S is always output from the decoder 28 as long as the signal radio wave from the transmitter 1 is normally received.
更に受信機２には、妨害電波検出用として高周
波検出器３１及び中間周波検出器３２が設けられ
ている。高周波検出器３１は、外部アンテナ２１
で受けた電波を帯域消去フイルタ３３を介して受
信し、検出信号Ｒを出力するものであり、帯域消
去フイルタ３３は発信機１で使用する信号電波の
周波数、例えば40MHzを中心とした減衰域を持
つ。従つて、検出信号Ｒは発信機１で使用してい
ない周波数の電波が受信された時に出力されるこ
とになる。一方、中間周波検出器３２は帯域通過
フイルタ３４を介して中間周波増幅器２５からの
出力信号を受信し、検出信号Ｉを出力するもので
あり、帯域通過フイルタ３４は発信機１の信号電
波の周波数と発振器２３の発振周波数とて決まる
中間周波数を中心とした通過域を持つ。従つて、
検出信号Ｉは発信機１の信号電波の周波数と同じ
か、これに近い周波数の電波が受信された時に出
力されることになる。 Furthermore, the receiver 2 is provided with a high frequency detector 31 and an intermediate frequency detector 32 for detecting interference waves. The high frequency detector 31 is connected to the external antenna 21
The radio wave received by the transmitter 1 is received via a band elimination filter 33 and a detection signal R is output. have Therefore, the detection signal R is output when the transmitter 1 receives a radio wave of a frequency that is not used. On the other hand, the intermediate frequency detector 32 receives the output signal from the intermediate frequency amplifier 25 via the band pass filter 34 and outputs the detection signal I. It has a passband centered on the intermediate frequency determined by the oscillation frequency of the oscillator 23. Therefore,
The detection signal I is output when a radio wave having a frequency equal to or close to the frequency of the signal radio wave from the transmitter 1 is received.
制御部２９は、上述した識別信号Ｓと２種類の
検出信号Ｒ及びＩの組合わせから異常を判断して
異常信号Ｃを出力するものであり、この異常信号
Ｃにより、例えば図外の燃料カツト用の電磁弁を
動作させて機関を緊急停止させたり、緊急信号の
発信装置を動作させたりするように構成されてい
る。 The control unit 29 determines an abnormality from a combination of the above-mentioned identification signal S and two types of detection signals R and I and outputs an abnormality signal C. This abnormality signal C causes, for example, a fuel cutoff (not shown). It is configured to operate a solenoid valve for emergency stop of the engine and operate an emergency signal transmission device.
第２図に制御部２９における異常判断の手順
を、第３図にタイムチヤートをそれぞれ示す。異
常判断は、
１） 識別信号Ｓが有る時は正常。 FIG. 2 shows a procedure for abnormality determination in the control section 29, and FIG. 3 shows a time chart. Abnormality judgment is as follows: 1) When identification signal S is present, it is normal.
２） 識別信号Ｓが無くても妨害電波が有る時に
は、妨害電波によつて正常な受信機が不能となつ
ているだけで異常でない。2) Even if there is no identification signal S, if there is interference radio waves, it is not an abnormality because the interference radio waves are simply disabling a normal receiver.
３） 妨害電波が無い時に識別信号Ｓが無ければ
異常。3) If there is no identification signal S when there is no interference, it is abnormal.
という考え方で行なわれる。It is done with this idea in mind.
第３図の(a)においては、識別信号Ｓが出力され
ており、発信機１自身の電波によつて検出信号Ｉ
も発生している正常な状態の時に、時刻T1で落
水事故が起きた場合を示す。すなわち、発信機１
を携帯した操船者が落水すると、発信が停止して
デコーダ２８で信号の識別ができなくなり、それ
まで出力されていた識別信号Ｓと検出信号Ｉが同
時に止まる。このためすべての信号がなくなり、
制御部２９から遅延時間ｔの後に異常信号Ｃが出
力され、緊急停止が行なわれる。この遅延時間ｔ
は、何らかの原因で一時的に発信機１の信号電波
が停止したような場合に、直ちに緊急停止が行な
われることを防ぐためのものであり、例えば１秒
に選定される。 In (a) of FIG. 3, the identification signal S is output, and the detection signal I is transmitted by the radio waves of the transmitter 1 itself.
The figure shows a case where a fall over water accident occurs at time T 1 during a normal situation in which water is also occurring. That is, transmitter 1
When a boat operator carrying a falls into the water, the transmission stops and the decoder 28 becomes unable to identify the signal, and the identification signal S and detection signal I, which had been output until then, stop at the same time. This causes all signals to disappear,
An abnormality signal C is output from the control section 29 after a delay time t, and an emergency stop is performed. This delay time t
is set to 1 second, for example, to prevent an immediate emergency stop in the event that the signal radio waves from the transmitter 1 are temporarily stopped for some reason.
図ｂでは、時刻T2に識別信号Ｓが止まつてい
るが、検出信号Ｉが引続いて出力されている。従
つて、少なくともT2以降の検出信号Ｉは、本装
置で使用している周波数と同じかこれに近い周波
数の妨害電波によるものと判断してよく、識別信
号Ｓが止まつたのはこの妨害電波が原因と考えら
れるので、異常信号Ｃは出力されない。 In FIG. b, the identification signal S stops at time T2 , but the detection signal I continues to be output. Therefore, it can be concluded that at least the detection signal I after T 2 is due to interference radio waves with a frequency that is the same as or close to the frequency used by this device, and the reason why the identification signal S has stopped is because of this interference radio wave. Since this is considered to be the cause, abnormality signal C is not output.
図ｃでは、時刻T3に識別信号Ｓが止まり、検
出信号Ｉも同時に止まつているが、この時刻から
検出信号Ｒが出力されている。従つて、識別信号
Ｓの検出信号Ｉが止まつたのは、本装置の周波数
とは異なる周波数の非常に強い妨害電波によるも
のと判断して、異常信号Ｃは出力されない。 In Figure c, the identification signal S stops at time T3 , and the detection signal I also stops at the same time, but the detection signal R is output from this time. Therefore, it is determined that the reason why the detection signal I of the identification signal S has stopped is due to extremely strong interfering radio waves having a frequency different from that of the present device, and the abnormal signal C is not output.
図ｄでは、時刻T4に識別信号Ｓが止まり、検
出信号Ｉは引続き出力されているが、この時刻か
ら検出信号Ｒが出力されている。従つて、識別信
号Ｓが止まつたのは、本装置の周波数とは異なる
周波数の妨害電波によるものと判断して、異常信
号Ｃは出力されないのである。 In FIG. d, the identification signal S stops at time T4 , and the detection signal I continues to be output, but the detection signal R is output from this time. Therefore, it is determined that the reason why the identification signal S has stopped is due to interfering radio waves having a frequency different from that of the present device, and the abnormality signal C is not output.
このようにして、識別信号Ｓが止まつてもその
時に妨害電波が有れば、識別信号Ｓの停止は妨害
電波によるものとして制御部２９からは異常信号
Ｃが出力されず、仮りに漁業無線が使用されて発
信機１の信号電波が受信できなくなつても、緊急
停止は行なわれない。従つて、誤動作により不意
に船が停止するようなことはなく、緊急停止装置
の信頼性が向上される。なお、この緊急停止機能
の休止は妨害電波が検出されている時のみであ
り、妨害電波がなくなると速やかに正常動作に復
帰する。 In this way, even if the identification signal S stops, if there is a jamming radio wave at that time, the control unit 29 will not output the abnormal signal C, assuming that the stoppage of the identification signal S is due to the jamming radio wave, and the fishing radio will Even if the signal radio waves from the transmitter 1 cannot be received due to use, an emergency stop will not be performed. Therefore, the ship will not stop unexpectedly due to malfunction, and the reliability of the emergency stop device will be improved. Note that this emergency stop function is suspended only when jamming radio waves are detected, and normal operation is promptly resumed once the jamming radio waves are removed.
第４図は発信機１の電源回路１５の回路例を示
す図である。発信機１は、別に設けられる充電器
の所定の位置にセツトすると充電端子１６が充電
器の端子に接触し、バツテリ４１がダイオード４
２を介して充電器に接続されるようになつてい
る。４３は前述したエンコーダ１１や、発振機１
２等からなる送信回路を示し、スイツチ素子とし
てのトランジスタ４４を介してバツテリ４１に接
続されている。このトランジスタ４４のベースに
はアンド回路４５の出力側が接続され、アンド回
路４５の入力側の一方はバツテリ４１の＋側に、
他方はノツト回路４６を介して充電端子１６の＋
側にそれぞれ接続されている。従つて、充電中は
ノツト回路４６の出力側がＬレベルとなるためア
ンド回路４５の出力側もＬレベルとなり、トラン
ジスタ４４は非導通となつて充電中の送信は自動
的に停止される。なお、バツテリ４１とトランジ
スタ４４の間にリードスイツチを直列に挿入し、
このリードスイツチの近くに来るように充電器に
設けたマグネツトにより充電中にはリードスイツ
チを開き、送信回路４３をバツテリ４１から完全
に切り離すようにすることもできる。 FIG. 4 is a diagram showing a circuit example of the power supply circuit 15 of the transmitter 1. When the transmitter 1 is set in a predetermined position of a separately provided charger, the charging terminal 16 contacts the terminal of the charger, and the battery 41 connects to the diode 4.
It is designed to be connected to a charger via 2. 43 is the encoder 11 mentioned above and the oscillator 1.
2, which is connected to a battery 41 via a transistor 44 as a switch element. The output side of an AND circuit 45 is connected to the base of this transistor 44, and one input side of the AND circuit 45 is connected to the + side of the battery 41.
The other terminal is connected to + of the charging terminal 16 via the knot circuit 46.
connected to each side. Therefore, during charging, the output side of the NOT circuit 46 is at L level, so the output side of AND circuit 45 is also at L level, transistor 44 becomes non-conductive, and transmission during charging is automatically stopped. In addition, a reed switch is inserted in series between the battery 41 and the transistor 44,
It is also possible to completely disconnect the transmission circuit 43 from the battery 41 by opening the reed switch during charging by using a magnet provided in the charger near the reed switch.
〈発明の効果〉
上述の実施例の説明からも明らかなように、本
発明の小型船舶の緊急停止装置は、妨害電波の検
出手段を設け、発信機からの信号電波が受信され
ない場合に、妨害電波が検出されていれば緊急停
止機能を休止するようにしたものである。従つ
て、妨害電波による誤動作で船が停止することが
なくなり、不意の停止で航行や作業に支障を生ず
るような不都合を容易に解消することができるの
である。<Effects of the Invention> As is clear from the description of the embodiments above, the emergency stop device for a small boat of the present invention is provided with means for detecting interference radio waves, and detects interference when signal radio waves from the transmitter are not received. The emergency stop function is deactivated if radio waves are detected. Therefore, the ship will not stop due to malfunctions caused by jamming radio waves, and it is possible to easily eliminate inconveniences such as interruptions to navigation and work caused by unexpected stops.
第１図は本発明の一実施例のブロツク図、第２
図は制御手順のフローチヤート、第３図はタイム
チヤート、第４図は発信機の電源回路の結線図で
ある。
１…発信機、２…受信機、１１…エンコーダ、
２８…デコーダ、２９…制御部、３１…高周波検
出器、３２…中間周波検出器、Ｓ…識別信号、Ｉ
及びＲ…検出信号、Ｃ…異常信号。
FIG. 1 is a block diagram of one embodiment of the present invention, and FIG.
The figure is a flowchart of the control procedure, FIG. 3 is a time chart, and FIG. 4 is a wiring diagram of the power supply circuit of the transmitter. 1... Transmitter, 2... Receiver, 11... Encoder,
28...Decoder, 29...Control unit, 31...High frequency detector, 32...Intermediate frequency detector, S...Identification signal, I
and R...detection signal, C...abnormal signal.
Claims (1)
波を船体側に設けた受信機で常時受信し、発信機
からの信号電波が受信できなくなると船体を停止
する緊急停止機能を備えた小型船舶の緊急停止装
置において、 妨害電波の検出手段を設け、発信機からの信号
電波が受信されず、且つ妨害電波が検出されてい
る時には緊急停止機能を休止するようにしたこと
を特徴とする小型船舶の緊急停止装置。[Scope of Claims] 1. Emergency stop function that constantly receives signal radio waves sent from a transmitter carried by a vessel operator with a receiver installed on the hull side, and stops the vessel when signal radio waves from the transmitter cannot be received. In an emergency stop device for a small vessel equipped with a system, a means for detecting jamming radio waves is provided, and the emergency stop function is deactivated when the signal radio wave from the transmitter is not received and jamming radio waves are detected. Features: Emergency stop device for small vessels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61036142A JPS62194994A (en) | 1986-02-20 | 1986-02-20 | Emergent stop device for small-sized vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61036142A JPS62194994A (en) | 1986-02-20 | 1986-02-20 | Emergent stop device for small-sized vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62194994A JPS62194994A (en) | 1987-08-27 |
| JPH0543558B2 true JPH0543558B2 (en) | 1993-07-01 |
Family
ID=12461540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61036142A Granted JPS62194994A (en) | 1986-02-20 | 1986-02-20 | Emergent stop device for small-sized vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62194994A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5653480A (en) * | 1993-03-19 | 1997-08-05 | Bridgestone Flowtech Corporation | Pipe coupling |
-
1986
- 1986-02-20 JP JP61036142A patent/JPS62194994A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62194994A (en) | 1987-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH082029B2 (en) | In-vehicle GPS receiver | |
| CA2036481A1 (en) | Interference cancellation system having noise reduction features and method | |
| US5566359A (en) | Prevention of simultaneous transmitter operation in a ground radio transmitting and receiving apparatus | |
| US4015206A (en) | Protective relaying modem receiver | |
| JPS6235727A (en) | Receiver with self-diagnosing function | |
| US4777656A (en) | Legislated emergency locating transmitters and emergency position indicating radio beacons | |
| JPH0543558B2 (en) | ||
| US3810023A (en) | Automatic squelch tail eliminator for tone coded squelch systems | |
| US4056838A (en) | In-band signal-to-noise ratio monitor for an FSK relaying system | |
| US4021739A (en) | Distress signal protection system | |
| JPS57173245A (en) | Data transmission system | |
| JPS6053932B2 (en) | receiver monitoring device | |
| JPS5639655A (en) | N-to-one stand-by switching system of radio digital transmission | |
| JPH0376055B2 (en) | ||
| JPS6096031A (en) | Squelch control circuit | |
| JP2728075B2 (en) | Command receiver for drones | |
| JPS6354258B2 (en) | ||
| JPS61251335A (en) | Frequency converter for two-way catv system | |
| JPH0611663Y2 (en) | ALC circuit | |
| JPH0618852Y2 (en) | Transceiver for track circuit | |
| JPS6269730A (en) | Radio transmitter | |
| JPH04316231A (en) | Input interruption alarm raise inhibition circuit | |
| JPH04238756A (en) | Antenna device | |
| JPS6258399A (en) | Wireless type emergency alarm | |
| JPH01220949A (en) | Detecting circuit for out-band signaling signal |