JPH0178971U - - Google Patents
Info
- Publication number
- JPH0178971U JPH0178971U JP1987174407U JP17440787U JPH0178971U JP H0178971 U JPH0178971 U JP H0178971U JP 1987174407 U JP1987174407 U JP 1987174407U JP 17440787 U JP17440787 U JP 17440787U JP H0178971 U JPH0178971 U JP H0178971U
- Authority
- JP
- Japan
- Prior art keywords
- receiver
- circuit
- judgment signal
- measuring device
- distance measuring
- 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 8
- 230000010355 oscillation Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (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〜ｄ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、１７：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：判定用信号発
振回路、１７：故障判定回路、１８：発振用集積
回路、１９：抵抗、２０，２１：端子、２２：増
幅用集積回路、２３：出力端子、２４：トランジ
スタ、２５：端子、２６：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 d 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-
7b is a diagram showing the waveforms and timings of various signals used for shot state detection, and FIG. 7 is a flowchart showing the operation of the failure detection device for an ultrasonic distance measuring device according to the present invention. 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, 17: Waveform shaping circuit, 13: Distance counter, 14: Distance measurement oscillation circuit, 15: Comparison circuit, 16: Judgment signal oscillation circuit, 17: Failure judgment circuit, 18: Oscillation integrated circuit, 19: Resistor, 20, 21: Terminal, 22: Amplification integrated circuit, 23: Output terminal, 24: Transistor, 25: Terminal, 26: Resistor.
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
波式距離測定装置の受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、受
信器が反射超音波の受信を行なつていない間に、
この受信器に設けた１対の端子の一方に判定用信
号を送る判定用信号発振回路と、この判定用信号
が受信器を通過して上記１対の端子の他方から送
り出される通過信号を受けて、受信器の導通状態
を検出し、受信器の故障の有無を判定する故障判
定回路とから成る、超音波式距離測定器の故障検
出装置。 A receiver for an ultrasonic distance measuring device that receives ultrasonic waves transmitted from a transmitter and reflected by a target object, and calculates the distance to the target object based on the time from the moment of transmission to the moment of reception. performs failure detection,
This is a failure detection device for an ultrasonic distance measuring device that detects a fault while the receiver is not receiving reflected ultrasonic waves.
A judgment signal oscillation circuit that sends a judgment signal to one of a pair of terminals provided in this receiver, and a judgment signal that receives a passing signal that is sent out from the other of the pair of terminals after the judgment signal passes through the receiver. 1. A failure detection device for an ultrasonic distance measuring device, comprising a failure determination circuit that detects the conduction state of the receiver and determines whether or not there is a failure in the receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987174407U JPH0178971U (en) | 1987-11-17 | 1987-11-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987174407U JPH0178971U (en) | 1987-11-17 | 1987-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0178971U true JPH0178971U (en) | 1989-05-26 |
Family
ID=31466263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987174407U Pending JPH0178971U (en) | 1987-11-17 | 1987-11-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0178971U (en) |
-
1987
- 1987-11-17 JP JP1987174407U patent/JPH0178971U/ja active Pending
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