JPH05336589A - Ultrasonic transmission equipment - Google Patents
Ultrasonic transmission equipmentInfo
- Publication number
- JPH05336589A JPH05336589A JP4136570A JP13657092A JPH05336589A JP H05336589 A JPH05336589 A JP H05336589A JP 4136570 A JP4136570 A JP 4136570A JP 13657092 A JP13657092 A JP 13657092A JP H05336589 A JPH05336589 A JP H05336589A
- Authority
- JP
- Japan
- Prior art keywords
- abnormality
- wave transmitter
- electronic device
- transmitter
- signal
- 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.)
- Granted
Links
Landscapes
- Amplifiers (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、超音波送波装置、特
に、水中に音波を発生させ反射音を利用することにより
目標物の距離、方位を探知するソ−ナ−システム等にお
いて、パワ−アンプを内蔵した送波器を用いる超音波送
波装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic wave transmitting device, and more particularly to a power system for a sonar system for detecting the distance and direction of a target by generating a sound wave in water and utilizing reflected sound. -It relates to an ultrasonic wave transmitting device using a wave transmitter with a built-in amplifier.
【０００２】[0002]
【従来の技術】従来の電子機器を内蔵した送受波器とし
ては、Ｂｒｕｅｌ ＆ Ｋｊｒ社製のハイドロフォンＴ
ＹＰＥ８１０１−８１０５（Ｂｒｕｅｌ ＆ Ｋｊｒ
社、インストラクション マニュアル“Ｉｎｓｔｒｕｃ
ｔｉｏｎ Ｍａｎｕａｌ”第９頁）があるが、この送受
波器内の電子機器は信号を増幅する機能しか持たず、送
波器内部の異常を検出できるものではない。低重量、低
コスト、高信頼性を実現を目的とする。2. Description of the Related Art A conventional transmitter / receiver having a built-in electronic device is a hydrophone T manufactured by Bruel & Kjr.
YPE8101-105 (Bruel & Kjr
, Instruction manual "Instruc
However, the electronic device in this transmitter / receiver only has the function of amplifying the signal and cannot detect an abnormality inside the transmitter / receiver. The purpose is to realize sex.
【０００３】[0003]
【発明が解決しようとする課題】超音波送波装置は、通
常小さな送受波器を多数組み合わせて構成し、音波ビー
ムの指向性、ビームの大きさを制御するが、従来のパワ
−アンプ内蔵型送受波器では、送波器内部の異常を検出
できず、過電流が流れパワ−アンプ、電子回路等の損傷
がした。また、一部の送受波器に損傷が生じた場合で
も、音波ビームの指向性、ビームの大きさの制御に重大
な影響を与え、信頼性が低下することが明らかとなっ
た。さらにまた、送受波器を数百台使用するような場
合、船外に装備されるため、重量の低減、船内の装置と
送波器とを結合する伝送線路を少なくすることが重要と
なる。An ultrasonic wave transmitting device is usually constructed by combining a large number of small transducers to control the directivity of the acoustic wave beam and the size of the beam. The wave transmitter / receiver could not detect an abnormality inside the wave transmitter, resulting in overcurrent and damage to the power amplifier, electronic circuit, etc. It was also found that even if some of the transducers were damaged, the directivity of the acoustic beam and the control of the beam size would be seriously affected and the reliability would be reduced. Furthermore, when hundreds of wave transmitters / receivers are used, it is important to reduce the weight and the number of transmission lines connecting the on-board device and the wave transmitters, because they are mounted outside the ship.
【０００４】本発明の第１の目的は、信頼性の高いパワ
−アンプ内蔵型送受波器を用いた超音波送波装置を実現
することである。本発明の第２の目的は、超音波送波装
置に適した高信頼性と同時に低重量、低コストのパワ−
アンプ内蔵型送受波器を実現することである。A first object of the present invention is to realize an ultrasonic wave transmitting apparatus using a highly reliable power amplifier built-in transducer. A second object of the present invention is a high-reliability, low-weight, low-cost power suitable for an ultrasonic wave transmitting device.
It is to realize a built-in amplifier type transceiver.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、パワ−アンプを内蔵型した送波器と、上記送波器に
電力及び駆動信号を供給する第１の電子機器と、上記送
波器と上記電子機器と接続する線路と、上記送波器と上
記電子機器の少なくとも一方にいて、上記送波器の異常
を検出する検出手段（センサ）を設けた。特に好ましい
態様として、パワ−アンプを内蔵した送波器に、内臓さ
れた電子機器の異常を駆動を行うためセンサを設け、上
記センサの異常検出信号を上記第１の電子機器に上記第
１の電子機器から上記送波器への入力信号を供給する線
路を介し、周波数多重技術を用いて送信するようにす
る。他の特に好ましい態様として、第１の電子機器に、
上記送波器に電力及び駆動信号から上記送波器の異常を
検出し、解析する異常検出回路及び異常解析器を設け
る。To achieve the above object, a transmitter having a built-in power amplifier, a first electronic device for supplying electric power and a drive signal to the transmitter, and the transmitter are provided. A detecting device (sensor) for detecting an abnormality of the wave transmitter is provided on at least one of the wave transmitter and the electronic device, and a line connecting the wave device and the electronic device. As a particularly preferred embodiment, a wave transmitter having a built-in power amplifier is provided with a sensor for driving an abnormality of the built-in electronic device, and an abnormality detection signal of the sensor is sent to the first electronic device by the first electronic device. Transmission is performed using a frequency multiplexing technique via a line that supplies an input signal from the electronic device to the transmitter. As another particularly preferable aspect, in the first electronic device,
The wave transmitter is provided with an abnormality detection circuit and an abnormality analyzer for detecting and analyzing an abnormality of the wave transmitter from electric power and a drive signal.
【０００６】[0006]
【作用】パワ−アンプ内蔵型送波器は電源より供給され
た入力信号を増幅し送波器内の圧電素子を駆動すること
により水中に音波を送信する。パワ−アンプの異常はセ
ンサで検出されたアラ−ム信号により送波器から出力さ
れる。この時、信号線には入力信号とアラ−ム信号が伝
送されるためバンドパスフィルタ−により必要な信号の
みを通過させパワ−アンプには入力信号を供給し、アラ
−ム信号はバンドパスフィルタ−を通してパワ−アンプ
の異常を検出する。これにより信号線に入力信号とアラ
−ム信号を重畳させても誤動作しない。本発明の超音波
送波装置では、各送波器毎の異常検出が出来るため、装
置の信頼性が向上する。特に、好ましい異実施形態によ
れば、異常検出のための、特別の信号線路を送波器と第
１の電子機器との間に設ける必要が無いので、装置の低
コスト化、及び低重量化が実現される。The transmitter with built-in power amplifier amplifies the input signal supplied from the power source and drives the piezoelectric element in the transmitter to transmit sound waves into the water. The abnormality of the power amplifier is output from the wave transmitter by the alarm signal detected by the sensor. At this time, since the input signal and the alarm signal are transmitted to the signal line, only the necessary signal is passed through the bandpass filter and the input signal is supplied to the power amplifier, and the alarm signal is transmitted through the bandpass filter. -Abnormality of power amplifier is detected through. Therefore, even if the input signal and the alarm signal are superimposed on the signal line, no malfunction occurs. In the ultrasonic wave transmitting device of the present invention, since the abnormality can be detected for each wave transmitting device, the reliability of the device is improved. In particular, according to the preferred embodiment, it is not necessary to provide a special signal line for detecting an abnormality between the wave transmitter and the first electronic device, so that the cost and weight of the device can be reduced. Is realized.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面を用いて説明す
る。図１は、本発明による超音波送波装置の一実施例の
構成を示すブロック図である。本実施例は、海中の物体
の探知、測定に使用されるもので、パワ−アンプ内蔵型
送波器１３は船外に装備され、電源線５、入力信号線６
及び異常信号線７で船内に設けられた電子機器１と結合
されている。信号発生器３より発生された入力信号１４
は、入力信号線６、バンドパスフィルタＡを経てパワ−
アンプ１０に加えられ、増幅され圧電素子１１を駆動す
ることにより音波を水中に送信する。送波器１３内の電
子機器８は船内の電源２によって動作し、異常検出器１
２によってアラーム信号１５から電子機器８内の異常を
判定し、異常信号線７を介して船内の異常解析器４へ送
る。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of an ultrasonic wave transmitting device according to the present invention. This embodiment is used for detecting and measuring an object in the sea, and the power amplifier built-in type transmitter 13 is mounted on the outside of the ship, and has a power supply line 5 and an input signal line 6.
Also, an abnormal signal line 7 is connected to the electronic device 1 provided in the ship. Input signal 14 generated by the signal generator 3
Is powered through the input signal line 6 and the bandpass filter A.
A sound wave is transmitted to the water by being applied to the amplifier 10 and being amplified and driving the piezoelectric element 11. The electronic device 8 in the wave transmitter 13 is operated by the power supply 2 in the ship, and the abnormality detector 1
The abnormality in the electronic device 8 is judged from the alarm signal 15 according to 2 and is sent to the abnormality analyzer 4 in the ship via the abnormality signal line 7.
【０００８】図２は、本発明による超音波送波装置の第
２の実施例の構成を示すブロック図である。図１の実施
例と同一部分には同一の番号を付け説明を省く。本実施
例は図１の実施例における入力信号線６で異常信号線７
を兼用できる構成としたものである。そのため、船内に
設けられた電子機器１の信号発生器３の出力部に、入力
信号１４を入力信号兼アラ−ム信号線２０に結合し、入
力信号兼アラ−ム信号線２０で送られて来る信号を分離
しバンドパスフィルタＢ１７に加える変成器Ａ１６を設
け、送波器１３に、異常検出器１２の出力電圧を周波数
変換するＶ／Ｆコンバ−タ１９、コンバ−タ１９の出力
を入力信号兼アラ−ム信号線２０に結合し、信号線２０
出送られてくる入力信号をバンドパスフィルタＡ９に結
合する変成器Ｂ１８を設けた。FIG. 2 is a block diagram showing the configuration of the second embodiment of the ultrasonic wave transmitting device according to the present invention. The same parts as those in the embodiment of FIG. In this embodiment, the abnormal signal line 7 is replaced by the input signal line 6 in the embodiment of FIG.
It has a structure that can also be used. Therefore, the input signal 14 is coupled to the input signal / alarm signal line 20 at the output portion of the signal generator 3 of the electronic device 1 provided in the ship, and is sent by the input signal / alarm signal line 20. A transformer A16 for separating the incoming signal and adding it to the bandpass filter B17 is provided, and the output of the V / F converter 19 and the converter 19 for frequency-converting the output voltage of the abnormality detector 12 is input to the wave transmitter 13. The signal line 20 is connected to the signal / alarm signal line 20.
A transformer B18 is provided for coupling the incoming and outgoing input signal to the bandpass filter A9.
【０００９】船内１と送波器１３の間は電源線５と入力
信号兼アラ−ム信号線２０で接続される。送波器１３を
作動させるための信号には、電源以外に入力信号１４と
アラ−ム信号１５とがあるが、変成器Ａ１６と変成器Ｂ
１８により信号をミキシングして信号線２０を共有させ
ている。信号線２０にはアラ−ム信号１５も重畳してい
るため、図２に示すような信号発生器帯域に対応するバ
ンドパスフィルタ−Ｂ９を通過することによりパワ−ア
ンプ１０は、信号発生器３からの入力信号１４のみを増
幅し送波器１３から水中へ音波を送信する。A power line 5 and an input signal / alarm signal line 20 are connected between the inboard 1 and the wave transmitter 13. Signals for operating the transmitter 13 include an input signal 14 and an alarm signal 15 in addition to the power source, but the transformer A16 and the transformer B are provided.
A signal is mixed by 18 and the signal line 20 is shared. Since the alarm signal 15 is also superimposed on the signal line 20, the power amplifier 10 passes through the bandpass filter B9 corresponding to the signal generator band as shown in FIG. Amplify only the input signal 14 from and transmit the sound wave from the wave transmitter 13 into the water.
【００１０】異常検出器１２はパワ−アンプ１０の過電
流や、温度上昇などを検出して電圧信号へ変換してＶ／
Ｆコンバ−タ１９により電圧／周波数変換され変成器Ｂ
１８を通して入力信号１４とミキシングされ信号線によ
り変成器Ａ１６へ伝送されバンドパスフィルタ−Ａ１７
に入力される。バンドパスフィルタ−Ａ１７の特性はＶ
／Ｆコンバ−タ１９の周波数帯域のみを通過させるの
で、信号発生器３の信号は遮断される。異常解析器４
は、Ｖ／Ｆコンバ−タ１９からのアラ−ム信号１５を解
析して、パワ−アンプ１０の異常を判断する。従って、
本実施例によればアラ−ム信号１５と入力信号１４を同
じ信号線で共有することにより信号線を減すことができ
る。The abnormality detector 12 detects an overcurrent or a temperature rise of the power amplifier 10 and converts it into a voltage signal to V /
Voltage / frequency conversion by the F converter 19 and transformer B
The signal is mixed with the input signal 14 through 18 and transmitted to the transformer A16 through the signal line. The bandpass filter-A17
Entered in. The characteristic of the bandpass filter-A17 is V
Since only the frequency band of the / F converter 19 is passed, the signal of the signal generator 3 is cut off. Anomaly analyzer 4
Analyzes the alarm signal 15 from the V / F converter 19 to determine the abnormality of the power amplifier 10. Therefore,
According to this embodiment, the number of signal lines can be reduced by sharing the alarm signal 15 and the input signal 14 on the same signal line.
【００１１】図３は、本発明による超音波送波装置の第
３の実施例の構成を示すブロック図である。本実施例の
送波器１３には、異常検出の為の特別の手段を設けず、
船内電子機器１の電源２及び入力信号１４から送波器１
３の異常を検出するように構成したものである。船内電
子機器１の電流検出回路２１、入力信号検出回路２２、
比較判定回路２３から構成される異常検出回路であり、
電流検出回路２１は、送波器１３への電源２の電流を監
視し、その状態を比較判定回路２３へ出力する。入力信
号検出回路２２は、信号発生器３からの入力信号の有無
を検出し、比較判定回路２３へ出力する。比較判定回路
２３では、電流と入力信号１４の相互関係などを判定
し、異常であればアラ−ム信号１５を出力する。FIG. 3 is a block diagram showing the configuration of a third embodiment of the ultrasonic wave transmitting device according to the present invention. The wave transmitter 13 of this embodiment is not provided with any special means for detecting an abnormality,
From the power supply 2 and the input signal 14 of the onboard electronic device 1 to the wave transmitter 1
3 is configured to detect the abnormality. A current detection circuit 21, an input signal detection circuit 22 of the onboard electronic device 1,
An abnormality detection circuit including a comparison / determination circuit 23,
The current detection circuit 21 monitors the current of the power supply 2 to the wave transmitter 13 and outputs the state to the comparison / determination circuit 23. The input signal detection circuit 22 detects the presence or absence of an input signal from the signal generator 3 and outputs it to the comparison / determination circuit 23. The comparison / determination circuit 23 determines the mutual relation between the current and the input signal 14, and outputs an alarm signal 15 if there is an abnormality.
【００１２】図４は、本発明による超音波送波装置の第
４の実施例の構成を示すブロック図である。本実施例も
送波器１３には、異常検出の為の特別の手段を設けず、
船内電子機器１の電源２及び入力信号１４から送波器１
３の異常を検出するように構成したものである。本実施
例では、送波器１３に異常が発生したとき、電力負荷の
変動を防止するようにしたものである。FIG. 4 is a block diagram showing the configuration of the fourth embodiment of the ultrasonic wave transmitting device according to the present invention. Also in this embodiment, the transmitter 13 is not provided with any special means for detecting abnormality,
From the power supply 2 and the input signal 14 of the onboard electronic device 1 to the wave transmitter 1
3 is configured to detect the abnormality. In the present embodiment, when an abnormality occurs in the wave transmitter 13, the fluctuation of the power load is prevented.
【００１３】検出回路２５は送波器１３への電流のモニ
タ−及び送波器１３への入力信号の有無の検出を行い制
御回路２７へ出力する。制御回路２７は、検出回路２５
からの出力に応じて、切り換え回路を動作させ該当する
送波器１３へのラインを切離し、送波器１３と等価のダ
ミ−負荷２６を接続し、電源２の１次側及び２次側の電
力負荷の変動を防止する。The detection circuit 25 monitors the current to the wave transmitter 13 and detects the presence / absence of an input signal to the wave transmitter 13 and outputs it to the control circuit 27. The control circuit 27 includes the detection circuit 25.
According to the output from the switch, the switching circuit is operated to disconnect the line to the corresponding wave transmitter 13, the dummy load 26 equivalent to the wave transmitter 13 is connected, and the primary side and the secondary side of the power source 2 are connected. Prevent fluctuation of power load.
【００１４】[0014]
【発明の効果】本発明によればパワ−アンプ内蔵型送波
器の異常を発見することができ、さらに、図２、図３、
図４の実施態様によると信号線を減らすことができるた
めケ−ブルの重量、コストを半減でき信頼性を向上でき
る。また、図４の実施態様によると、送波器の異常検出
時に異常ラインを切離し、等価のダミ−負荷に切り換え
るので電力負荷の変動を防止でき、他の送波器への負荷
変動を防止し、送波器を多数用いる超音波送波システム
への異常送波器の影響が防止でき、信頼性を向上でき
る。According to the present invention, an abnormality of the power amplifier built-in type transmitter can be detected, and further, FIGS.
According to the embodiment of FIG. 4, since the number of signal lines can be reduced, the weight and cost of the cable can be reduced by half and the reliability can be improved. Further, according to the embodiment of FIG. 4, when the abnormality of the wave transmitter is detected, the abnormal line is cut off and switched to the equivalent dummy load, so that the fluctuation of the electric power load can be prevented and the fluctuation of the load on the other wave transmitters can be prevented. It is possible to prevent the influence of the abnormal wave transmitter on the ultrasonic wave transmission system using a large number of wave transmitters and improve the reliability.
【図１】本発明による回路の一実施例の構成図である。FIG. 1 is a configuration diagram of an embodiment of a circuit according to the present invention.
【図２】本発明による回路の他の実施例の構成図であ
る。FIG. 2 is a configuration diagram of another embodiment of the circuit according to the present invention.
【図３】本発明による回路の更に他の実施例の構成図で
ある。FIG. 3 is a configuration diagram of still another embodiment of the circuit according to the present invention.
【図４】本発明による回路の更に他の実施例の構成図で
ある。FIG. 4 is a configuration diagram of still another embodiment of the circuit according to the present invention.
１・・・船内電子機器 １７・・・バン
ドパスフィルタ−Ｂ ２・・・電源 １８・・・変成
器Ｂ ３・・・信号発生器 １９・・・Ｖ／
Ｆコンバ−タ ４・・・異常解析器 ２０・・・入力
信号線兼アラ−ム信号線 ５・・・電源線 ２１・・・電流
検出回路 ６・・・入力信号線 ２２・・・入力
信号検出回路 ７・・・異常信号線 ２３・・・比較
判定回路 ８・・・電子機器 ２４・・・切替
スイッチ ９・・・バンドパスフィルタ−Ａ ２５・・・検出
回路 １０・・・パワ−アンプ ２６・・・ダミ
−負荷 １１・・・圧電素子 ２７・・・制御
回路 １２・・・異常検出器 １３・・・アンプ内蔵型送波器 １４・・・入力信号 １５・・・アラ−ム信号 １６・・・変成器Ａ。1 ... board electronic device 17 ... band pass filter-B 2 ... power supply 18 ... transformer B 3 ... signal generator 19 ... V /
F converter 4 ... Abnormality analyzer 20 ... Input signal line and alarm signal line 5 ... Power supply line 21 ... Current detection circuit 6 ... Input signal line 22 ... Input signal Detection circuit 7 ... Abnormal signal line 23 ... Comparison determination circuit 8 ... Electronic device 24 ... Changeover switch 9 ... Bandpass filter-A 25 ... Detection circuit 10 ... Power amplifier 26 ... Dummy load 11 ... Piezoelectric element 27 ... Control circuit 12 ... Abnormality detector 13 ... Amplifier built-in wave transmitter 14 ... Input signal 15 ... Alarm signal 16 ... Transformer A.
Claims (6)
記送波器に電力及び駆動信号を供給する電子機器と、上
記送波器と上記電子機器と接続する線路と、上記送波器
と上記電子機器の少なくとも一方にいて、上記送波器の
異常を検出する検出手段を設けたことを特徴とする超音
波送波装置。1. A wave transmitter having a built-in power amplifier, an electronic device for supplying electric power and a drive signal to the wave transmitter, a line connecting the wave transmitter and the electronic device, and the wave transmitter. An ultrasonic wave transmitting device, characterized in that detection means for detecting an abnormality of the wave transmitter is provided in at least one of the transmitter and the electronic device.
波器と、船内に設けられ、上記送波器に電力を供給する
電源、上記送波器の駆動信号を発生する信号発生器をも
つ電子機器と、上記送波器と上記電子機器をつなぐ水密
ケ−ブルとを有する超音波送波装置において、上記送波
器が上記送波器の異常を感知するセンサと上記センサの
出力信号を電子機器に伝送する手段をもち、上記電子機
器が上記センサの出力信号を解析する異常解析器をもつ
ことを特徴とする超音波送波装置。2. A power amplifier built-in type wave transmitter installed in water, a power source installed in a ship for supplying electric power to the wave transmitter, and a signal generator for generating a drive signal for the wave transmitter. In an ultrasonic wave transmitting device having an electronic device having the same, a water-tight cable connecting the wave transmitter and the electronic device, a sensor for detecting an abnormality of the wave transmitter, and an output signal of the sensor. Is transmitted to an electronic device, and the electronic device has an abnormality analyzer that analyzes the output signal of the sensor.
て、上記センサの出力信号を上記異常解析器に伝送する
手段として、上記水密ケ−ブル中の上記信号発生器と送
波器を接続する線路を共用するように構成されたことを
特徴とする超音波送波装置。3. The ultrasonic wave transmitting device according to claim 2, wherein the signal generator and the wave transmitter in the watertight cable are connected as means for transmitting the output signal of the sensor to the abnormality analyzer. An ultrasonic wave transmitting device, characterized in that it is configured so as to share a common line.
波器と、船内に設けられ、上記送波器に電力を供給する
電源、上記送波器の駆動信号を発生する信号発生器をも
つ電子機器と、上記送波器と上記電子機器をつなぐ水密
ケ−ブルとを有する超音波送波装置において、上記電子
機器に上記電力を及び上記駆動信号から上記送波器の異
常を検出する異常検出手段を設けたことを特徴とする超
音波送波装置。4. A power amplifier built-in type wave transmitter installed in water, a power source provided onboard a ship for supplying electric power to the wave transmitter, and a signal generator for generating a drive signal for the wave transmitter. An ultrasonic wave transmitting device having an electronic device having the same, and a watertight cable connecting the wave transmitter to the electronic device, detecting an abnormality of the wave transmitter from the electric power and the drive signal to the electronic device. An ultrasonic wave transmitting device comprising an abnormality detecting means.
波装置を複数個組み合わせた超音波送波システムにおい
て、異常が検出された送波器のラインのみを切離し同時
に当該ラインと等価のダミ−負荷を接続することにより
電力負荷の変動を防止する手段をもつことを特徴とする
異常検出回路。5. In an ultrasonic wave transmission system in which a plurality of ultrasonic wave transmission devices according to claim 1, 2, 3 or 4 are combined, only the line of the wave transmitter in which an abnormality is detected is separated and at the same time An abnormality detection circuit having means for preventing fluctuations in an electric power load by connecting an equivalent dummy load.
力信号を増幅するパワーアンプと、上記パワーアンプの
異常を検出する異常検出器をもつ超音波送波器。6. An ultrasonic wave transmitter having a piezoelectric element, a power amplifier for amplifying an input signal for driving the piezoelectric element, and an abnormality detector for detecting an abnormality of the power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4136570A JP3002328B2 (en) | 1992-05-28 | 1992-05-28 | Ultrasonic wave transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4136570A JP3002328B2 (en) | 1992-05-28 | 1992-05-28 | Ultrasonic wave transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05336589A true JPH05336589A (en) | 1993-12-17 |
| JP3002328B2 JP3002328B2 (en) | 2000-01-24 |
Family
ID=15178350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4136570A Expired - Fee Related JP3002328B2 (en) | 1992-05-28 | 1992-05-28 | Ultrasonic wave transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3002328B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183757A (en) * | 2011-03-01 | 2011-09-14 | 徐州市茜帅电子产品有限公司 | Ultrasonic ranging sensor driving, collecting and processing module |
| CN109374063A (en) * | 2018-12-04 | 2019-02-22 | 广东电网有限责任公司 | A kind of transformer exception detection method, device and equipment based on cluster management |
-
1992
- 1992-05-28 JP JP4136570A patent/JP3002328B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183757A (en) * | 2011-03-01 | 2011-09-14 | 徐州市茜帅电子产品有限公司 | Ultrasonic ranging sensor driving, collecting and processing module |
| CN109374063A (en) * | 2018-12-04 | 2019-02-22 | 广东电网有限责任公司 | A kind of transformer exception detection method, device and equipment based on cluster management |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3002328B2 (en) | 2000-01-24 |
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