JPS61139484U - - Google Patents
Info
- Publication number
- JPS61139484U JPS61139484U JP2410785U JP2410785U JPS61139484U JP S61139484 U JPS61139484 U JP S61139484U JP 2410785 U JP2410785 U JP 2410785U JP 2410785 U JP2410785 U JP 2410785U JP S61139484 U JPS61139484 U JP S61139484U
- Authority
- JP
- Japan
- Prior art keywords
- counter
- received signal
- correction circuit
- frequency
- counts
- 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
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Description
第１図はこの考案の測距装置の一実施例のブロ
ツク図、第２図は同上測距装置の動作を説明する
ためのタイムチヤート、第３図は同上測距装置に
おける受信信号と受信信号のパルス列の部分を示
す波形図、第４図は同上測距装置における補正回
路の動作を説明するためのタイムチヤート、第５
図は従来の超音波式測距装置のブロツク図である
。
１……送信トリガパルス発生器、２……クロツ
クパルス発生回路、３……送信用振動子、５……
ゲート信号発生回路、６……ＡＮＤゲート、７，
１４……カウンタ、８……補正回路、９……ラツ
チ回路、１０……Ｄ／Ａコンバータ、１１……受
信用振動子、１３……シユミツトトリガ回路、３
０……指示計、１００……物体。
Fig. 1 is a block diagram of an embodiment of the range finder of this invention, Fig. 2 is a time chart for explaining the operation of the above range finder, and Fig. 3 is a received signal and a received signal in the above range finder. FIG. 4 is a waveform diagram showing the pulse train portion of the above, FIG. 4 is a time chart for explaining the operation of the correction circuit in the distance measuring device, and FIG.
The figure is a block diagram of a conventional ultrasonic distance measuring device. 1... Transmission trigger pulse generator, 2... Clock pulse generation circuit, 3... Transmission resonator, 5...
Gate signal generation circuit, 6...AND gate, 7,
14...Counter, 8...Correction circuit, 9...Latch circuit, 10...D/A converter, 11...Receiving transducer, 13...Schmitt trigger circuit, 3
0...indicator, 100...object.
Claims (1)
送信する送信用振動子と、上記物体からの反射波
を受信して受信信号を出力する受信用振動子と、
上記超音波の送信と同時にクロツクパルスをカウ
ントする第１のカウンタと、上記受信信号より得
られる受信信号パルス列をカウントして所定の設
定数ｎになると上記第１のカウンタのカウントを
停止する第２のカウンタと、上記第１のカウンタ
のカウント値を入力して上記第２のカウンタのカ
ウント数ｎに相当するクロツクパルス数ｎａ＝ｆ
ｃｆｔｎ（ｆｃはクロツクパルスの周波数、ｆｔ
は振動子の周波数）を減らすように補正する補正
回路と、この補正回路の出力を指示する手段とを
具備する測距装置。 a transmitting transducer that is excited by a transmitting trigger signal and transmits ultrasonic waves to an object; a receiving transducer that receives reflected waves from the object and outputs a received signal;
a first counter that counts clock pulses at the same time as the ultrasonic wave is transmitted; and a second counter that counts the received signal pulse train obtained from the received signal and stops counting the first counter when a predetermined set number n is reached. A counter and a clock pulse number na=f corresponding to the count number n of the second counter by inputting the count value of the first counter.
cftn (fc is the frequency of the clock pulse, ft
A distance measuring device comprising: a correction circuit for correcting to reduce the frequency of a vibrator; and means for instructing the output of the correction circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985024107U JPH0431593Y2 (en) | 1985-02-20 | 1985-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985024107U JPH0431593Y2 (en) | 1985-02-20 | 1985-02-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61139484U true JPS61139484U (en) | 1986-08-29 |
| JPH0431593Y2 JPH0431593Y2 (en) | 1992-07-29 |
Family
ID=30517954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985024107U Expired JPH0431593Y2 (en) | 1985-02-20 | 1985-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0431593Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US596855A (en) * | 1898-01-04 | diyis |
-
1985
- 1985-02-20 JP JP1985024107U patent/JPH0431593Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US596855A (en) * | 1898-01-04 | diyis |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0431593Y2 (en) | 1992-07-29 |
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