公开(公告)号：US4656585A

公开(公告)日：1987-04-07

申请号：US576538

申请日：1984-02-03

Applicant: Edward A. Stephenson

Inventor： Edward A. Stephenson

IPC: G01C21/00 ,  G01D9/00 ,  G06F3/05 ,  G06F17/00 ,  G06F17/40 ,  G06F15/20

CPC classification number: G01D9/005 ,  G07C5/085

Abstract: A data acquisition system for use in an aircraft flight data recorder receives multiple analog and discrete signals representative of various aircraft parameters. A single address command from the flight data recorder central processing unit (CPU) causes a first multiplexer to select a set of analog signals. Each selected analog signal is amplified by a gain factor under CPU control and passed to track-and-hold circuitry which holds a level of the amplified analog signal upon receipt of a suitable command. The held analog signal levels are passed to a second multiplexer which also receives a set of discrete signals selected by a third multiplexer in response to a CPU address command. A control sequencer sequentially passes each signal at the input of the second multiplexer through an analog-to-digital converter, with the resultant digital signal being loaded into memory. After either all the selected and processed analog signals or the selected discrete signals have been analog-to-digital converted and stored in memory, the control sequencer issues an interrupt signal to the CPU.

Abstract translation: 用于飞行器飞行数据记录器的数据采集系统接收代表各种飞机参数的多个模拟和离散信号。 来自飞行数据记录器中央处理单元（CPU）的单个地址命令使得第一多路复用器选择一组模拟信号。 每个选择的模拟信号在CPU控制下被增益因子放大，并被传送到跟踪和保持电路，该电路在接收到合适的命令时保持放大的模拟信号的电平。 保持的模拟信号电平被传递到第二多路复用器，该第二多路复用器还响应于CPU地址命令接收由第三多路复用器选择的一组离散信号。 控制顺控程序通过模数转换器顺序地通过第二多路复用器的输入端的每个信号，将所得的数字信号加载到存储器中。 在所有选定和处理的模拟信号或所选择的离散信号都经过模数转换并存储在存储器中之后，控制定序器向CPU发出一个中断信号。

公开(公告)号：US4378574A

公开(公告)日：1983-03-29

申请号：US162886

申请日：1980-06-25

Applicant: Edward A. Stephenson

Inventor： Edward A. Stephenson

IPC: G11B15/087 ,  G01D9/28 ,  G06F3/06 ,  G11B5/09 ,  G11B15/02 ,  G11B15/18 ,  G11B5/00

CPC classification number: G06F3/0601 ,  G01D9/28 ,  G06F2003/0698

Abstract: A digital data recorder has a microprocessor control which directs data to the read/write transducer and actuates the tape drive. The recorder accepts data in serial digital form and has an analog-to-digital converter-multiplexer which receives analog data and adapts it for digital recording. Data is read from the tape through an output connector to one of several retrieving devices. An identifying input to the microprocessor from the retrieving device provides for control of the read transducer and the tape drive to direct the appropriate data to the retrieving device.

Abstract translation: 数字数据记录器具有将数据引导到读/写换能器并致动磁带驱动器的微处理器控制。 录像机以串行数字形式接收数据，并具有接收模拟数据并适应数字记录的模拟 - 数字转换器多路复用器。 通过输出连接器将数据从磁带读取到几个检索设备之一。 来自检索装置的微处理器的识别输入提供读取传感器和磁带驱动器的控制，以将适当的数据引导到检索装置。