JPS603603B2 - Measuring terminal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a measurement terminal device for achieving intelligence in all kinds of experimental equipment such as test/analysis equipment or measurement equipment.

Conventionally, analog and digital data output from equipment has been controlled using simple self-made interfaces depending on the measuring equipment, and various process control signal lines are connected to the computer in addition to data signal lines. . In this case, if it is desired to enter alphanumeric characters as complex instructions or experimental conditions, a commercially available typewriter is also used.
This type of method has an easy configuration when developed as a dedicated system, but it is difficult to configure individual Connecting an interface or typewriter to the experimental equipment increases the number of input/output points, complicates the control system software configuration, and increases costs. In order to eliminate such drawbacks, the present invention relates to an efficient, versatile, and highly functional measuring terminal that has typewriter functionality, interface functionality, and computer process control functionality.

To this end, the main device has external mechanisms such as switches for setting experimental initial conditions, keys for control commands, a keyboard consisting of a numeric keypad and alphanumeric keys, and various lamp groups. 1st
The figure shows a basic block diagram of the internal circuit of a measurement terminal device according to an embodiment of the present invention.

The external data register 2 is a primary storage area for data output from the device 11, and the number of input points varies depending on the individual devices, but can be set arbitrarily. The internal data buffer 3 is a storage for various data set using the switch/keyboard 8 of the external mechanism,
It consists of fixed and variable data registers, the former being used for setting the reading speed of analog data, setting the number of digital data, and selecting software in the computer, and the latter for setting data input using the keyboard 8. The process interrupt generation/control circuit 1 uses the setting command key 9 to issue various control commands, such as experiment start (BEGIN), end (END), data collection start (START), and stop (S).
TOP), commands such as the above-mentioned internal data transfer (TRANS), commands such as START and STOP sent from the experimental equipment 11 via the signal line e as external control signals, and interrupt signals (Pi ) to the computer 12 via the Pi signal line d, and at the same time, for example, 4 bits
When using s, an instruction code as shown in the table is latched into the output register 4. The data in this register 4 is read by a read pulse on signal line c from the computer, and the type of command control signal is decoded, and the following control is performed within the device depending on the type. 4bit
-Yayama 2 interrupt signal Pi of the instruction code in case of s configuration
When is BEG..., control is executed according to the processing flow ① to ② shown in FIG.

That is, after the command control "0001" is recognized,
Data for initial setting by the external mechanism 11 is latched into the internal data register 3 by the switch keyboard 8. Next, at the timing of the interrupt signal Pi, the control pulse generation circuit 5 generates n data shift pulses that are preset according to the type of Pi, and sequentially transfers the contents of the transfer register 3 to the output register 4. The data is shifted to the computer 12 side through the data signal line b at the timing of the mystery pulse synchronized with the control pulse. This timing chart is shown in FIGS. Further, data transmission from the experimental equipment 11 is performed by the START Pi in the following manner. First, the number m of control pulses is set in advance in the internal data register 3 according to the number of output signal points of the experimental equipment. This is input or set from the external setting mechanism 8, and the information is recorded in the internal data register 3 (fixed).
Next, the Pi generation/control circuit 1 receives the START Pi input through the external control signal line e or the command key 9.
As in the case of BEGm described above, Pi input using the BEGm is outputted to the computer 12 via the interrupt signal line d, and at the same time, the data output signal of the experimental equipment 11 is latched into the external data register 2. Next, the control pulse generating circuit 5 generates m control pulses, and the contents of the data register 2 are sequentially shifted to the output register 4, and the data signal line b is sent to the computer 12.
transmitted to. In the case of TRANS, which transfers internal data input from the keyboard 8, the input data from the keyboard 8 is latched into the internal data register 3, which is a temporary storage, in the same way as with the two types of interrupt signals Pi. Data is transmitted using this method. In this way, a method that shares output registers for external data from external experimental equipment and internal setting data set by a keyboard, etc. and transmits them to externally connected equipment such as a computer using the same signal line is a data The number of transmission signal lines can be reduced and can be set arbitrarily based on the correlation with the number of control pulses. This allows easy connection to experimental equipment of any output format, and the ability to reduce the number of data points is extremely efficient for simultaneous connection of multiple devices. In addition to the above, various control commands can be performed by setting a large number of command codes and arbitrary codes as shown in Figure 2, and decoding them using the method described above. It is convenient for developing.
The lamp drive circuit and display system have the function of displaying the processing status of the computer or the operating status of other simultaneously connected devices, and the counter 6 counts the number of pulses sent through one signal line a. Then, the drive circuit 7 is used to turn on various indicator lamps.

Usually, the measurement terminal of the present invention is attached to experimental equipment separate from the computer. Therefore, by using this group of lamps as a monitor, various indications such as data collection in progress, READY status, inoperable, and in progress can be displayed using a single signal line, making experiment and measurement work more clear. . As described above, the present invention is characterized by a connection method that is as standardized and efficient as possible as a general-purpose measurement terminal.As an example, when the data signal line is configured with a small number of ships,
All kinds of control can be performed with just 7 points: 1 point for process interrupt, 4 points for digital input, and 2 points for digital output.

Therefore, this terminal is most effective for systems that connect multiple devices, and can also be used as a tape puncher or printer terminal.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a measurement terminal device according to an embodiment of the present invention, Fig. 2 is a control flowchart using an experiment start interrupt signal as an example of control processing using process interrupts, and Fig. 3 corresponds to Fig. 2. This shows a timing chart. 1... Control circuit, 2... External data register, 3...
...Internal data register, 4...Sequential output register, 5...Control signal generation circuit, 6...
Counter, 7... Lamp drive circuit, 8, 9... Switch keyboard, 10... Display o system, 11... Experimental equipment, 12... Computer, 13... Driver. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. An external data register that latches data signals output from experimental equipment, etc., an internal data register that latches setting data set from a keyboard, etc., and the external and internal data registers. an output register that is connected and transfers data to a data processing device such as a computer;
an interrupt generation/control circuit that generates an interrupt signal to the data processing device and provides data transfer timing to the three registers; A measuring terminal device, wherein a predetermined amount of data is alternately transferred to the output register, and at the same time, the data in the output register is transferred to the data processing device at a timing synchronized with the transfer timing. 2. In the description of claim 1, there is provided a means for counting the number of pulses sent from the computer that corresponds to the operating state of the computer, and various display lamps are lit by the output of the counting means. A measurement terminal device.