公开(公告)号：EP0147700A3

公开(公告)日：1988-04-20

申请号：EP84114964

申请日：1984-12-08

申请人： HONEYWELL INC.

发明人： Bozarth, Theodore B., Jr. ,  Olsen, Arthur M. ,  Rowlands, Ronald H.

IPC分类号： G06F01/00 ,  G06J01/00 ,  H03M01/00 ,  G01D03/04

CPC分类号： G06J1/00 ,  G01L9/025 ,  G01L19/0092

摘要： Temperature compensation in a digital data handling system uses a digital temperature compensation for producing a digital word modification for an input to a temperature sensitive digital to analog converter (6). The temperature affecting the digital data handling system is sensed and produces a digital temperature representation which is used by the digital computer to produce an output signal in accordance with a characterization equation in the form of Output = f(D, M) where D = digital data and M = f (temperature). The temperature stability of the digital data handling system is affected by the temperature stability of a reference voltage circuit (8, 10, 11) used in the digital-to-analog converter and having a voltage reference diode (8). A compensation circuit (29) uses a temperature sensor in the form of a second diode (28), which is thermally coupled to the reference diode (8), and a tracking type analog-to-digital converter (30-42) for converting an analog signal. The output of the analog-to-digital converter is a count stored in the counter (38) and is supplied as a digital word to a digital computer (1) which uses the digital word to modify a digital input signal to the digital-to-analog converter (6).

公开(公告)号：EP0147700B1

公开(公告)日：1991-03-13

申请号：EP84114964.4

申请日：1984-12-08

申请人： HONEYWELL INC.

发明人： Bozarth, Theodore B., Jr. ,  Olsen, Arthur M. ,  Rowlands, Ronald H.

IPC分类号： G06F1/00 ,  G06J1/00 ,  H03M1/00 ,  G01D3/04

CPC分类号： G06J1/00 ,  G01L9/025 ,  G01L19/0092

公开(公告)号：EP0101528B1

公开(公告)日：1989-11-08

申请号：EP82304374.0

申请日：1982-08-19

申请人： HONEYWELL INC.

发明人： Houvig, Felix J. ,  Rowlands, Ronald H.

IPC分类号： G08C19/02 ,  H04B3/54

CPC分类号： H04B3/548 ,  G08C19/02 ,  H04B2203/547 ,  H04B2203/5483

公开(公告)号：EP0147700A2

公开(公告)日：1985-07-10

申请号：EP84114964.4

申请日：1984-12-08

申请人： HONEYWELL INC.

发明人： Bozarth, Theodore B., Jr. ,  Olsen, Arthur M. ,  Rowlands, Ronald H.

IPC分类号： G06F1/00 ,  G06J1/00 ,  H03M1/00 ,  G01D3/04

CPC分类号： G06J1/00 ,  G01L9/025 ,  G01L19/0092

摘要： Temperature compensation in a digital data handling system uses a digital temperature compensation for producing a digital word modification for an input to a temperature sensitive digital to analog converter (6). The temperature affecting the digital data handling system is sensed and produces a digital temperature representation which is used by the digital computer to produce an output signal in accordance with a characterization equation in the form of Output = f(D, M) where D = digital data and M = f (temperature). The temperature stability of the digital data handling system is affected by the temperature stability of a reference voltage circuit (8, 10, 11) used in the digital-to-analog converter and having a voltage reference diode (8). A compensation circuit (29) uses a temperature sensor in the form of a second diode (28), which is thermally coupled to the reference diode (8), and a tracking type analog-to-digital converter (30-42) for converting an analog signal. The output of the analog-to-digital converter is a count stored in the counter (38) and is supplied as a digital word to a digital computer (1) which uses the digital word to modify a digital input signal to the digital-to-analog converter (6).

摘要翻译： 数字数据处理系统中的温度补偿使用数字温度补偿来产生对温度敏感数模转换器（6）的输入的数字字修改。 感测影响数字数据处理系统的温度并产生数字温度表示，数字计算机使用数字温度表示，根据Output = f（D，M）形式的表征方程产生输出信号，其中D =数字 数据和M = f（温度）。 数字数据处理系统的温度稳定性受到数模转换器中使用的参考电压电路（8,10,11）的温度稳定性的影响，并具有参考电压（8）。 补偿电路（29）使用热耦合到参考二极管（8）的第二二极管（28）形式的温度传感器和用于转换的跟踪型模拟 - 数字转换器（30-42） 一个模拟信号。 模数转换器的输出是存储在计数器（38）中的计数，并且作为数字字提供给数字计算机（1），数字计算机（1）使用数字字来将数字输入信号修改为数字 - - 光谱转换器（6）。

公开(公告)号：EP0101528A1

公开(公告)日：1984-02-29

申请号：EP82304374.0

申请日：1982-08-19

申请人： HONEYWELL INC.

发明人： Houvig, Felix J. ,  Rowlands, Ronald H.

IPC分类号： G08C19/02 ,  H04B3/54

CPC分类号： H04B3/548 ,  G08C19/02 ,  H04B2203/547 ,  H04B2203/5483

摘要： A data communication system uses a 2-wire transmitter 2 which adjusts the current through the pair of wires 17 between 4 and 20 mA to represent a process variable; this can be sensed by an analog-to-digital converter 70, across a resistor RO, feeding a display 74. A communication device 8 can interrupt the PV analog signalling for digital signalling. Device 8 draws a 16 mA current for 1 bit time, and this is sensed by transmitter 2, which ceases PV transmission. Device 8 then sends 1 or more bytes, by drawing 0 and 16 mA current pulses, which are sensed by transmitter 2. Transmitter 2 can then send data back to device 8 by raising its output to 20 mA, and dropping it to 4 mA for 1 bit time each, then transmitting the data as 1 or more bytes with logic levels 4 and 20 mA. A steady level of 4 mA for a predetermined period t is recognized by either device as the end of digital signalling, and the transmitter 2 resumes its analog PV output

摘要翻译： 数据通信系统使用2线制发射机2，其通过一对导线17调节在4和20mA之间的电流以表示过程变量; 这可以由模拟数字转换器70跨越电阻器RO感测，馈送显示器74.通信设备8可以中断用于数字信号的PV模拟信号。 器件8抽取16 mA电流1位时间，并由发射器2感测到，这样就停止了PV传输。 然后，设备8通过绘制由发射机2感测的0和16mA电流脉冲发送1个或多个字节。然后，发射器2可以通过将其输出提高到20mA并将其降低到4mA来将数据发送回设备8 每个1位时间，然后将数据作为1或更多字节发送，逻辑电平为4和20 mA。 在预定时段t内的4mA的稳定电平由任一装置识别为数字信令的结束，并且发射机2恢复其模拟PV输出。