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    • 1. 发明授权
    • Method of controlling a microprocessor to monitor input signals at
irregular mutually intersecting intervals
    • 控制微处理器以不规则的相交间隔监视输入信号的方法
    • US4740915A
    • 1988-04-26
    • US844270
    • 1986-03-28
    • Jorg BonitzRobert EntenmannRochus KnabBernhard MillerSiegfried RohdeHerbert SchrammWalter Viess
    • Jorg BonitzRobert EntenmannRochus KnabBernhard MillerSiegfried RohdeHerbert SchrammWalter Viess
    • G06F9/48F02B1/04F02D41/26F02P5/15G06F15/78G06F9/22G05D13/02G06F15/00
    • F02P5/1502F02D41/263F02D41/266F02B1/04Y02T10/46
    • Control of a microcomputer performing a wide variety of functions in a motor vehicle in which the sequences of input and output signals intersect in time, instead of being performed by an elaborate input/output unit, is performed in the microcomputer itself with the help of a timing signal generator operating at a sub-multiple of the microcomputer clock frequency and producing a sequence of timing signals, each of which serve as an interrupt signal to the microprocessor of the microcomputer to initiate an interrupt program for scanning inputs and preparing outputs. After this short interrupt program, the main program is resumed. In the interrupt program each of a number of registers, respectively serving separate inputs or outputs, are decremented or incremented, having been set at particular values at the beginning of each interrupt program. Some registers are set at two different values in alternation in succeeding interrupt intervals. Engine speed determination is produced by counting the number of interrupt signals during the passage of a prolonged signal representing a certain angle of shaft rotation. The frequency of timing signals is varied in steps in accordance with engine speed.
    • 在微型计算机本身中借助于在微机本身中执行在机动车辆中执行输入和输出信号的顺序在时间上交叉而不是由精心设计的输入/输出单元执行的多种功能的微型计算机的控制 定时信号发生器以微计算机时钟频率的倍数工作,并产生一系列定时信号,每个定时信号用作微处理器的微处理器的中断信号,以启动用于扫描输入和准备输出的中断程序。 在这个短暂的中断程序之后,主程序被恢复。 在中断程序中,分别提供分开的输入或输出的多个寄存器中的每一个被递减或递增,已被设置在每个中断程序的开始处的特定值。 一些寄存器在后续中断间隔中交替设置为两个不同的值。 发动机转速的确定是通过在表示一定角度的轴旋转的长时间信号通过期间对中断信号的数目进行计数而产生的。 定时信号的频率根据发动机转速逐步变化。
    • 6. 发明授权
    • Internal combustion engine knock sensing method and system
    • 内燃机爆震检测方法及系统
    • US4478068A
    • 1984-10-23
    • US410629
    • 1982-08-23
    • Jorg BonitzRobert EntenmannRochus KnabBernhard MillerSiegfried RohdeHerbert SchrammWalter Viess
    • Jorg BonitzRobert EntenmannRochus KnabBernhard MillerSiegfried RohdeHerbert SchrammWalter Viess
    • F02P5/152F02D45/00F02P5/153G01H17/00G01L23/22G01M15/00
    • G01L23/225
    • To recognize knocking conditions in signals derived from a knock sensor, which signals representative of knocking may be masked by background or noise signals, and to clearly distinguish the knocking signal from background or noise signals, the knocking signals are integrated with respect to measuring or strobing intervals during a predetermined angle of crankshaft rotation, digitized in an A/D converter (7) and then compared in a comparator (9) with the same signals which have been passed through a low-pass digital filter (8) to compare the integrated, digitized signal of a then occurring combustion process or event with similar signals of prior combustion processes or events to thereby recognize and distinguish knocking signal conditions from noise signal conditions; digital filtering and comparison as well as sequence timing can be carried out in a single microprocessor (FIGS. 2:14), earlier combustion events being weighted in accordance with the remoteness of their occurrence and/or engine speed and engine loading, the reference signal, for example, being generated in accordance with the formula:y(t.sub.i)=(1-k).y(t.sub.i-1)+kx(t.sub.i)whereiny(t.sub.i) is the reference signal;i is the count index of the respective number of combustion cycles of the respective cylinder;x(t.sub.i) is the instantaneous digitized integrated value; and k is the weighting factor with which the then pertaining digitized integrated value is weighted to form the new reference value.Combustion processes which resulted in knocking can be eliminated from forming part of the comparison.
    • 为了识别来自爆震传感器的信号中的爆震条件,其表征爆震的信号可被背景或噪声信号掩蔽,并且清楚地区分爆震信号与背景或噪声信号,所以敲击信号相对于测量或选通 在曲轴旋转的预定角度期间的间隔,在A / D转换器(7)中数字化,然后在比较器(9)中与通过低通数字滤波器(8)的相同信号进行比较,以比较集成 ,然后发生的燃烧过程或事件的数字化信号具有类似的先前燃烧过程或事件的信号,从而识别和区分爆震信号条件与噪声信号条件; 数字滤波和比较以及序列时序可以在单个微处理器中执行(图2:14),早期的燃烧事件根据其发生和/或发动机速度和发动机负载的偏远加权,参考信号 例如,根据以下公式生成:y(ti)=(1-k).y(ti-1)+ kx(ti)其中y(ti)是参考信号; i是相应气缸的相应燃烧循环次数的计数值; x(ti)是瞬时数字化积分值; 并且k是加权因子,随后关联的数字化积分值被加权以形成新的参考值。 导致敲击的燃烧过程可以从形成部分比较中消除。
    • 9. 发明授权
    • Internal combustion engine knocking sensing and recognition system
    • 内燃机爆震感应识别系统
    • US4467634A
    • 1984-08-28
    • US397094
    • 1982-07-12
    • Siegfried RohdeJorg BonitzRobert EntenmannRochus KnabHerbert Schramm
    • Siegfried RohdeJorg BonitzRobert EntenmannRochus KnabHerbert Schramm
    • F02P5/152F02P5/153G01H17/00G01L23/22G01M15/00H03K5/08
    • H03K5/082G01L23/225
    • A knocking sensor (10) which provides output signals representative of combustion condition under knocking to thereby generate knocking signals which have mixed therewith noise or stray interference signals, and which also furnishes noise or stray interference signals under other than knocking combustion conditions, has its output connected to a plurality of parallel connected selective filters (2, 3). The filters have different pass band frequencies. One of the filters (3) is tuned to sense knocking frequencies, one or more other filters (2) being tuned to preferentially select noise or interference signals. A selection and discriminating circuit (10) having comparators (11) is provided connected to the filters to eliminate noise signals by comparing the signal level of the output received from the filters with a reference, which may be a dynamic reference, the outputs from the discriminators being processed in a logic circuit (15) to provide output signals (18) if (1) the filtered signal having the frequencies expected upon knocking exceeds a threshold level and (2) the filtered signal having the frequency band of the stray, or noise signals is below a threshold level and, preferably, a knocking signal persists for a time in excess of a time interval as determined by a timing circuit (16). Preferably, non-linear circuits such as logarithmic circuits (4, 5), are connected between the outputs from the filters (2, 3) and the comparators (11, 12) of the selection or recognition or discriminating circuit (10).
    • 一种爆震传感器(10),其提供表示爆震时的燃烧状态的输出信号,从而产生与噪声或杂散干扰信号混合的爆震信号,并且还提供除了爆震燃烧条件之外的噪声或杂散干扰信号,其输出信号 连接到多个并联连接的选择性过滤器(2,3)。 滤波器具有不同的通带频率。 滤波器(3)中的一个被调谐以感测爆震频率,一个或多个其它滤波器(2)被调谐以优先选择噪声或干扰信号。 提供了具有比较器(11)的选择和识别电路(10),其连接到滤波器以通过将从滤波器接收的输出的信号电平与参考(其可以是动态参考)相比较来消除噪声信号, 如果(1)具有爆震预期的频率的滤波信号超过阈值电平,以及(2)具有杂散频带的滤波信号,则在逻辑电路(15)中处理鉴别器以提供输出信号(18),以提供输出信号 噪声信号低于阈值水平,并且优选地,敲击信号持续超过由定时电路(16)确定的时间间隔的时间。 优选地,诸如对数电路(4,5)之类的非线性电路连接在选择或识别或识别电路(10)的滤波器(2,3)和比较器(11,12)的输出端之间。