JPH0178970U - - Google Patents
Info
- Publication number
- JPH0178970U JPH0178970U JP1987174406U JP17440687U JPH0178970U JP H0178970 U JPH0178970 U JP H0178970U JP 1987174406 U JP1987174406 U JP 1987174406U JP 17440687 U JP17440687 U JP 17440687U JP H0178970 U JPH0178970 U JP H0178970U
- Authority
- JP
- Japan
- Prior art keywords
- transmitter
- measuring device
- distance measuring
- failure
- circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Description
第１図は本考案の故障検出装置を組み込んだ超
音波式距離測定器のブロツク図、第２図ａ〜ｄは
、距離測定に使用される各種信号の波形とタイミ
ングとを示す線図、第３図はオープン状態検出の
為の回路の１例を示す回路図、第４図ａ〜ｂは、
オープン状態検出に使用される各種信号の波形と
タイミングとを示す線図、第５図はシヨート状態
検出の為の回路の１例を示す回路図、第６図ａ〜
ｂは、シヨート状態検出に使用される各種信号の
波形とタイミングとを示す線図、第７〜８図は本
考案の超音波式距離測定器の故障検出装置の作用
を示すフローチヤートである。
１：送信器、２：目的物、３：受信器、４：超
音波発振回路、５：主発振回路、６：ゲート回路
、７：判別回路、８：送信回路、９：受信回路、
１０：増幅回路、１１：判別回路、１２：波形整
形回路、１３：距離カウンタ、１４：距離計測用
発振回路、１５：比較回路、１６：抵抗、１７：
故障判定回路、１８，１９：端子、２０，２１，
２２，２３：トランジスタ、２４：ダイオード、
２５：抵抗。
Fig. 1 is a block diagram of an ultrasonic distance measuring device incorporating the failure detection device of the present invention, Figs. 2 a to d are diagrams showing the waveforms and timing of various signals used for distance measurement, Figure 3 is a circuit diagram showing an example of a circuit for detecting an open state, and Figures 4 a to b are:
Diagrams showing the waveforms and timings of various signals used for open state detection, FIG. 5 is a circuit diagram showing an example of a circuit for short state detection, and FIG. 6 a-
Fig. 7b is a diagram showing the waveforms and timing of various signals used for shot state detection, and Figs. 1: Transmitter, 2: Target, 3: Receiver, 4: Ultrasonic oscillation circuit, 5: Main oscillation circuit, 6: Gate circuit, 7: Discrimination circuit, 8: Transmission circuit, 9: Receiving circuit,
10: Amplification circuit, 11: Discrimination circuit, 12: Waveform shaping circuit, 13: Distance counter, 14: Distance measurement oscillation circuit, 15: Comparison circuit, 16: Resistor, 17:
Failure determination circuit, 18, 19: terminal, 20, 21,
22, 23: transistor, 24: diode,
25: Resistance.
Claims (1)
を受信器で受信し、送信の瞬間から受信の瞬間迄
の時間に基づいて目標物迄の距離を求める、超音
波式距離測定器の送信器の故障検出を行なう、超
音波式距離測定器の故障検出装置であつて、この
送信器に駆動用信号を送る送信回路中に設け、上
記駆動用信号を通す抵抗の両端の電圧の差の有無
に基づいて送信器の導通状態を検出し、送信器の
故障の有無を判定する故障判定回路を設けた、超
音波式距離測定器の故障検出装置。 A transmitter of an ultrasonic distance measuring device that receives ultrasonic waves transmitted from a transmitter and reflected by a target object with a receiver, and calculates the distance to the target object based on the time from the moment of transmission to the moment of reception. A failure detection device for an ultrasonic distance measuring device, which detects a failure in an ultrasonic distance measuring device, and is installed in a transmitting circuit that sends a driving signal to the transmitter, and detects the presence or absence of a voltage difference between both ends of a resistor through which the driving signal is passed. A failure detection device for an ultrasonic distance measuring device, which is provided with a failure determination circuit that detects the conduction state of the transmitter based on the , and determines whether or not there is a failure in the transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987174406U JPH0178970U (en) | 1987-11-17 | 1987-11-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987174406U JPH0178970U (en) | 1987-11-17 | 1987-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0178970U true JPH0178970U (en) | 1989-05-26 |
Family
ID=31466262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987174406U Pending JPH0178970U (en) | 1987-11-17 | 1987-11-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0178970U (en) |
-
1987
- 1987-11-17 JP JP1987174406U patent/JPH0178970U/ja active Pending
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