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公开(公告)号：US4456867A
公开(公告)日：1984-06-26
申请号：US486752
申请日：1983-04-20
CPC分类号： H02P1/26 , H02H3/05 , H01H2071/006
摘要： A microprocessor control motor starter is utilized in which the microprocessor measures the status of AC input signals which are coupled thereto by way of an isolating electro-optical device. The electro-optical device provides a square wave output signal. Thirty-six samples are made to determine if the output signal is at a digital "1" level or a digital "0" level. If more than 18 digital "1's" are found, that is an indication that the device has failed and a trip operation is initiated by the microprocessor. If less than 18 but greater than some arbitrarily chosen small number such as 6 is found, that is an indication that the switch empowering the optoelectrical device is in a closed but valid disposition. If a number less than 6 is found, that is an indication that the switch is in the open disposition. If the device is failed, the microprocessor will trip the motor.
摘要翻译： 利用微处理器控制电动机启动器，其中微处理器通过隔离电光装置来测量与其耦合的AC输入信号的状态。 电光装置提供方波输出信号。 制作三十六个样品以确定输出信号是数字“1”电平还是数字“0”电平。 如果发现超过18个数字“1”，这表示设备发生故障，微处理器发起跳闸操作。 如果发现小于18但大于某些任意选择的小数（例如6），这表明赋予光电装置的开关处于封闭而有效的位置。 如果找到小于6的数字，则表示开关处于开放状态。 如果设备出现故障，微处理器将使电机脱扣。
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公开(公告)号：US4453117A
公开(公告)日：1984-06-05
申请号：US485090
申请日：1983-04-14
CPC分类号： H02H7/09 , H01H2071/006
摘要： A microprocessor control motor starter is utilized in which a capacitor-backed random access memory is utilized to store certain critical data about the status of a motor so that if the power supply voltage temporarily drops below a certain value the critical information will not be lost. The microprocessor which controls the motor attempts to reinitialize itself as in the case long term power outage. A subroutine is provided which determines whether the motor can immediately be placed in the state it was in before the power outage occurred, or whether an automatic restart may take place, or whether the motor must be operator restarted manually.
摘要翻译： 使用微处理器控制电动机起动器，其中利用电容器背衬的随机存取存储器来存储关于电动机状态的某些关键数据，使得如果电源电压暂时降低到低于某个值，则关键信息将不会丢失。 控制电机的微处理器会在长时间的停电情况下尝试重新初始化。 提供了一个子程序，用于确定电机是否可以立即放置在发生停电前的状态，或者是否可能发生自动重启，或者是否必须手动重新启动电机。
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公开(公告)号：US4467260A
公开(公告)日：1984-08-21
申请号：US486978
申请日：1983-04-20
CPC分类号： H02H6/005 , H01H2071/006
摘要： A microprocessor controlled motor starter is utilized in which the short term temperature differential between the rotor bars and the rotor end bells is accounted for by the microprocessor-based system as a function of operator programmed stall time and locked rotor current for the particular rotor in question. The latter information is supplied to the operator by the manufacturer of the motor. The foregoing takes into account a slight deviation between the shutdown temperature, which should be predicted as a function of the manufacturer's data, and the actual shutdown temperature as expressed by an exponential. In the event that the short term temperature differential is exceeded, the microprocessor will enter a TRIP routine causing the motor controller to shut the motor down, thus preventing serious damage to the motor.
摘要翻译： 利用微处理器控制的电动机起动器，其中转子杆和转子末端钟之间的短期温差被基于微处理器的系统考虑为操作者编程的失速时间和所讨论的特定转子的锁定转子电流的函数 。 后一种信息由电机的制造商提供给操作人员。 上述情况考虑到关闭温度之间的轻微偏差，该关闭温度应根据制造商的数据预测，以及由指数表示的实际停机温度。 在超过短期温差的情况下，微处理器将进入TRIP程序，使电机控制器关闭电机，从而防止严重损坏电机。
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公开(公告)号：US4461986A
公开(公告)日：1984-07-24
申请号：US486751
申请日：1983-04-20
CPC分类号： H02P23/0077 , H02H7/08 , H02P1/26 , H01H2071/006 , Y10T307/839
摘要： A microprocessor controlled motor starter is utilized in which the sign values of two phases of voltage are sampled and stored prior to actual motor startup to determine if a phase reversal, a phase imbalance, or a phase loss exists. If any of the preceding conditions exist, the motor start operation is aborted. This generally requires sampling the signs of the appropriate voltages three times during each voltage cycle at approximately equal intervals of 120.degree., give or take 10.degree. or so, and then forming a matrix of voltage signs versus sampling intervals. By comparing diagonal measurements of the sign values in the matrix for three diagonals in a direction of advancing time, phase loss or imbalance can be determined. The determining factor is that each diagonal must contain two values which should be equal, that is, both should be digital ones or both should be digital zeros. If such is the case for the three diagonal measurements, then no phase imbalance or loss exists. By using the same matrix and measuring appropriate two memory location diagonals against time in an appropriate manner, phase reversal can also be detected. Only signl values are utilized and only digital sign values are utilized with a digital one arbitrarily representing positive half cycle of voltage and a digital zero representing a negative half cycle of voltage. A calculating routine is provided whereby a measurement of the degree of phase imbalance can be determined by comparing the total number of diagonal measurements made over a large number of cycles with the number of failed diagonal measurements.
摘要翻译： 利用微处理器控制的电动机启动器，其中在实际电动机启动之前对两相电压的符号值进行采样和存储，以确定是否存在相位反转，相位不平衡或相位损失。 如果存在上述任何一种情况，电机启动操作将中止。 这通常需要在每个电压周期内以大约等于120°的间隔对适当电压的符号进行三次采样，给出或取10°左右，然后形成电压符号与采样间隔的矩阵。 通过比较在前进时间方向上的三个对角线的矩阵中的符号值的对角线测量，可以确定相位损失或不平衡。 决定因素是每个对角线必须包含两个应该相等的值，即两者应该是数字的，或者两者应该是数字零。 如果是三角测量的情况，则不存在相位不平衡或损失。 通过使用相同的矩阵并以适当的方式测量适当的两个存储器位置对角线对时间，也可以检测相位反转。 仅使用sign1值，并且只使用数字符号值，数字符号值任意表示电压的正半周期，而数字值代表电压的负半周期。 提供了一种计算程序，通过比较在大量循环中进行的对角线测量的总数与失败对角线测量的数量，可以确定相位不平衡程度的测量。
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公开(公告)号：US4899383A
公开(公告)日：1990-02-06
申请号：US94186
申请日：1987-09-08
申请人： Charles W. Einolf, Jr. , Harold B. Shutterly , Shan C. Sun , Russel W. Gonnam , Roger E. Ray , Karl C. Koch , Pamela M. Maynard-Nenno
发明人： Charles W. Einolf, Jr. , Harold B. Shutterly , Shan C. Sun , Russel W. Gonnam , Roger E. Ray , Karl C. Koch , Pamela M. Maynard-Nenno
CPC分类号： H04J3/0608 , H02H1/0069
摘要： The multiplexer in a multichannel, secure digital communication system repetitively embeds a sequence of byte length uniquely coded synchronizing signals in each of n successive frames of one channel of a multichannel, time multiplexed digital bit stream. Redundant protective relay data and associated parity check data are embedded in four of the n frames in a second, preferably adjacent channel, with the remaining of the n frames in the second channel containing additional of the uniquely coded synchronizing signals. The time multiplexed serial bit stream is transmitted to a remote station, preferably by fiber optic communications media. The most recent bits of the received serial bit stream equal in number to the number of bits spanned by the two channels in n frames are retained in n-1 serially connected serial in, serial out shift registers. Sixteen bit portions, a frame apart, of the retained most recent bits of the serial bit stream are applied to n serial in, parallel out shift registers. The parallel outputs of these shift registers corresponding to the frames of the two channels encoded with the synchronizing signals are compared with the sequence of uniquely coded signals stored in addresses in PROMs. When the compared signals match, which will occur once in every n frames, a synchronization signal is generated and the protective relay data and parity check data are read directly from the other parallel outputs of the serial in, parallel out shift registers. Similar rapid resynchronization of voice and data channels in the time multiplexed serial bit stream can be achieved by counting the number of bits in the bit stream from the generation of the synchronization signal in the relay protection channels to the beginning of the time slot for a selected voice or data channel.
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公开(公告)号：US4476423A
公开(公告)日：1984-10-09
申请号：US486977
申请日：1983-04-20
IPC分类号： H02H7/08
CPC分类号： H02H7/0816 , H01H2071/006
摘要： A microprocessor controlled motor starter is utilized in which an operator can preprogram within limits the number of starts which a motor can be subjected to in a programmed period of time to thus prevent destruction of the motor by accumulated overheating. Significantly more heat is generated during a start of a motor than during the run mode. The foregoing is accomplished by utilizing memory locations in which accumulated times from a first start are sequentially stored in order. If the time found in the latest memory location is larger than the predetermined maximum allowable time then the start is allowed to take place. If it is less than that time then the start is prevented from taking place and a readout alerts the operator as to how much time must expire before the next allowable start may take place. Once the maximum number of starts has been reached and the time increment has been determined to be allowable, the microprocessor will down shift the information into lower memory locations for subsequent utilization at the next attempted start.
摘要翻译： 使用微处理器控制的电动机启动器，其中操作者可以在程序化的时间段内限制电动机可以承受的起动次数，从而防止由于累积过热而损坏电动机。 在电动机启动期间比在运行模式期间产生显着更多的热量。 前述是通过利用其中从第一次开始的累积时间顺序地存储的存储器位置来实现的。 如果在最新的存储位置中发现的时间大于预定的最大允许时间，那么允许开始发生。 如果不到那个时间，则防止开始发生，并且读出警告操作者在下一个可允许的启动之前需要多少时间到期。 一旦达到最大启动次数并且时间增量已被确定为可允许，则微处理器将在下一次尝试启动时将信息下移到较低的存储器位置用于随后的使用。
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