JPS58535U - In-vehicle electronic control unit that suppresses noise - Google Patents
In-vehicle electronic control unit that suppresses noiseInfo
- Publication number
- JPS58535U JPS58535U JP9298881U JP9298881U JPS58535U JP S58535 U JPS58535 U JP S58535U JP 9298881 U JP9298881 U JP 9298881U JP 9298881 U JP9298881 U JP 9298881U JP S58535 U JPS58535 U JP S58535U
- Authority
- JP
- Japan
- Prior art keywords
- electronic control
- vehicle electronic
- suppresses noise
- control unit
- control device
- 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
Landscapes
- Noise Elimination (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図は車載マイクロコンピュータの構成例を示すブロ
ック図、第2図はマイクロコンピュータ搭載車両の配線
系統図、第3図aはFM放送周波数帯内でのクロック高
調波成分のスペクトラム、同図すはその一部拡大図、第
4図は2信号干渉ノイズの測定に用いたシミュレーショ
ン解路のブロック図、第5図は2入信号の周波数差に対
するビート・ノイズ音の聴感音量の相対レベルを示す実
測図、第6図は2人力信号のレベル差に桝するス
。
ピーカ端子電圧の相対レベルを示す実測図、第7図はビ
二ト・ノイズの絶対レベルを車載ラジオのS/N特性と
ともに示した実測図、第8図はビート・ノイズの波形図
、第9図は本考案の一実施例を示す概念図、第10図a
、 b、 cは発振周波数の調整可能なりロックパ
ルス発生回路の構成例を示す図、第11図は第10図C
に示す回路の特性図である。
30・・・・・二車舅電子制御装置、A、 B、 C・
・・・・・マイクロコンピュータ等の制御装置、32A
、 32B。
32o・・・・・・クロッグパルス発生回路、33・・
・・・・セラミック振動子、34.36・・・・・・固
定コンデンサ、35.37・・・・・・半固定コンデン
サ。
−−−−i
l ^
L−−
−i −−
7−一−−−−−−−−”Figure 1 is a block diagram showing a configuration example of an on-vehicle microcomputer, Figure 2 is a wiring system diagram of a vehicle equipped with a microcomputer, and Figure 3a is a spectrum of clock harmonic components within the FM broadcast frequency band. is a partially enlarged view, Figure 4 is a block diagram of the simulation solution path used to measure two-signal interference noise, and Figure 5 shows the relative level of the auditory volume of the beat noise sound with respect to the frequency difference between the two input signals. The actual measurement diagram, Figure 6, shows the speed that is determined by the level difference between the two human input signals.
. Figure 7 is a measured diagram showing the relative level of peaker terminal voltage, Figure 7 is a measured diagram showing the absolute level of beat noise along with the S/N characteristics of the car radio, Figure 8 is a waveform diagram of beat noise, Figure 9 The figure is a conceptual diagram showing an embodiment of the present invention, Fig. 10a
, b, c are diagrams showing a configuration example of a lock pulse generation circuit with adjustable oscillation frequency, and Figure 11 is Figure 10C.
FIG. 3 is a characteristic diagram of the circuit shown in FIG. 30...Two-car armhole electronic control device, A, B, C.
...control device such as microcomputer, 32A
, 32B. 32o...Clog pulse generation circuit, 33...
... Ceramic resonator, 34.36 ... Fixed capacitor, 35.37 ... Semi-fixed capacitor. −−−i l ^ L−− −i −− 7−1−−−−−−−”
Claims (1)
用いて構成した車載電子制御装置において、前記制御装
置のおのおのに内蔵したクロックパルス発生装置を、こ
れらクロックパルス発生装置より発生するクロックパル
スのAM放送周波数帯あるいはFM放送周波数帯内での
基本波成分もしくは高調波成分が相互に所定の周波数差
を持つように、発振周波数の調整可能な構成としたこと
を特徴とする雑音を抑制した車載電子制御装置。In an in-vehicle electronic control device configured using a plurality of control devices that are synchronously controlled by clock pulses, a clock pulse generator built in each of the control devices is configured to control the AM broadcasting frequency of the clock pulses generated by these clock pulse generators. An on-vehicle electronic control device that suppresses noise, characterized in that the oscillation frequency can be adjusted so that fundamental wave components or harmonic components within the FM broadcasting frequency band have a predetermined frequency difference. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9298881U JPS58535U (en) | 1981-06-25 | 1981-06-25 | In-vehicle electronic control unit that suppresses noise |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9298881U JPS58535U (en) | 1981-06-25 | 1981-06-25 | In-vehicle electronic control unit that suppresses noise |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58535U true JPS58535U (en) | 1983-01-05 |
Family
ID=29887979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9298881U Pending JPS58535U (en) | 1981-06-25 | 1981-06-25 | In-vehicle electronic control unit that suppresses noise |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58535U (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5024165U (en) * | 1973-06-27 | 1975-03-18 | ||
JPS5041843U (en) * | 1973-08-11 | 1975-04-28 |
-
1981
- 1981-06-25 JP JP9298881U patent/JPS58535U/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5024165U (en) * | 1973-06-27 | 1975-03-18 | ||
JPS5041843U (en) * | 1973-08-11 | 1975-04-28 |
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