JPH01151277U - - Google Patents
Info
- Publication number
- JPH01151277U JPH01151277U JP4620788U JP4620788U JPH01151277U JP H01151277 U JPH01151277 U JP H01151277U JP 4620788 U JP4620788 U JP 4620788U JP 4620788 U JP4620788 U JP 4620788U JP H01151277 U JPH01151277 U JP H01151277U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- distance measurement
- counter
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 8
- 238000012935 Averaging Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Manipulation Of Pulses (AREA)
- Radar Systems Or Details Thereof (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Description
第１図は本考案による計数回路の一実施例を示
すブロツク図、第２図は第１図の動作説明に供す
る各部の信号波形図、第３図は従来の計数回路の
一例を示すブロツク図である。
１……クロツク発生回路、２……位相差検出回
路、３……アンド／ゲート回路、４―１，４―２
……リセツト回路、５―１，５―２……カウンタ
／ラツチ回路、６……切替器。
FIG. 1 is a block diagram showing an embodiment of a counting circuit according to the present invention, FIG. 2 is a signal waveform diagram of each part to explain the operation of FIG. 1, and FIG. 3 is a block diagram showing an example of a conventional counting circuit. It is. 1... Clock generation circuit, 2... Phase difference detection circuit, 3... AND/gate circuit, 4-1, 4-2
...Reset circuit, 5-1, 5-2...Counter/latch circuit, 6...Switching device.
Claims (1)
号とから距離に比例したパルス幅をもつゲート信
号を生成する位相差検出回路と、この位相差検出
回路からのゲート信号とクロツク発生回路からの
クロツクとから距離に比例した数をもつパルス信
号へ変換するアンド／ゲート回路を有し、このア
ンド／ゲート回路からパルス信号を入力しパルス
数を計数しバイナリー信号へ変換しこの数値化し
た信号をリセツト信号によつて前記測距信号の周
期ごとにラツチし測距計数信号として出力する計
数回路において、第１および第２のリセツト回路
と、この第１のリセツト回路の出力と前記アンド
／ゲート回路の出力を入力とする第１のカウンタ
／ラツチ回路と、この第１のカウンタ／ラツチ回
路のカウンタ出力と前記第２のリセツト回路の出
力を入力とする第２のカウンタ／ラツチ回路から
なり前記計数回路から得られた測距計数信号を平
均化する平均化回路と、前記第１および第２のカ
ウンタ／ラツチ回路から出力する信号を切替える
ための切替器とを備え、前記第１のカウンタ／ラ
ツチ回路から測距計数信号を出力させ前記第２の
カウンタ／ラツチ回路から平均測距計数信号を出
力させ、必要に応じて前記切替器で該測距計数信
号と平均測距計数信号を切替えて出力し得るよう
にしたことを特徴とする計数回路。 A phase difference detection circuit that generates a gate signal with a pulse width proportional to the distance from a reference ranging signal and a demodulated ranging signal containing distance information, and a gate signal from this phase difference detection circuit and a clock generation circuit. It has an AND/gate circuit that converts the pulse signal into a pulse signal whose number is proportional to the distance from the clock of In the counting circuit which latches the distance measurement signal every period of the distance measurement signal by a reset signal and outputs it as a distance measurement count signal, first and second reset circuits, the output of the first reset circuit and the AND/gate are connected. The circuit comprises a first counter/latch circuit whose input is the output of the circuit, and a second counter/latch circuit whose inputs are the counter output of the first counter/latch circuit and the output of the second reset circuit. comprising an averaging circuit for averaging distance measurement counting signals obtained from the counting circuit; and a switch for switching signals output from the first and second counter/latch circuits; The latch circuit outputs a distance measurement count signal, the second counter/latch circuit outputs an average distance measurement count signal, and the switch switches between the distance measurement count signal and the average distance measurement count signal as necessary. A counting circuit characterized in that it is capable of outputting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4620788U JPH0629752Y2 (en) | 1988-04-07 | 1988-04-07 | Counting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4620788U JPH0629752Y2 (en) | 1988-04-07 | 1988-04-07 | Counting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01151277U true JPH01151277U (en) | 1989-10-19 |
| JPH0629752Y2 JPH0629752Y2 (en) | 1994-08-10 |
Family
ID=31272484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4620788U Expired - Lifetime JPH0629752Y2 (en) | 1988-04-07 | 1988-04-07 | Counting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629752Y2 (en) |
-
1988
- 1988-04-07 JP JP4620788U patent/JPH0629752Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0629752Y2 (en) | 1994-08-10 |
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