JPS63109327A - Multipoint data recording apparatus - Google Patents

Abstract

PURPOSE:To perform high speed processing, by a relatively simple constitution such that a counter for setting the operation stand-by time of each part to a predetermined value corresponding to the kind of operation is provided. CONSTITUTION:The necessary stand-by time corresponding to each step of a measuring sequence is successively set to a counter according to the practice step of the sequence by CPU 7 and the counter 12 performs countdown and a countup signal CU is applied to CPU 7 as an interruption signal IR each time. CPU 7 detects said signal IR to judge whether the stand-by time allotted to said step is finished to carry out the next step. This operation is repeated at every signal IR to make it possible to also easily realize a plurality of the combinations of stand-by times. By this method, the optimum stand-by time of each part corresponding to the kind of operation can be set without adding a special circuit and a data recording speed can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a multi-point data recording device that records measurement data at multiple points, and more specifically, to speeding up data recording operations.

(Prior Art) FIG. 2 is a block diagram showing an example of a conventional multi-point data recording device, and shows an example in which analog measurement data is converted into digital data and stored in a memory.

In FIG. 2, input terminals 1 to 11 are input terminals to which analog measurement data from multiple points are added, and are connected to the scanner 2. The scanner 2 selectively sends the analog measurement data applied to these input terminals 11 to 1n to the attenuator 3. The attenuator 3 attenuates the analog measurement data sent from the scanner 2 to an amplitude corresponding to the input range of the amplifier 4 and applies it to the amplifier 4. The amplifier 4 amplifies the analog measurement data applied from the attenuator 3 to a predetermined amplitude according to the input range of the A/D converter 5 and applies the amplified data to the A/D converter 5. A/D converter 5 converts analog measurement data applied from amplifier 4 into a digital signal. That is, these scanner 2, attenuator 3. Amplifier 4 and A/D converter 5 constitute an analog signal system.

6 is an A/D interface for bidirectionally transmitting and receiving signals between the A/D converter 5 and the CPU 7, and is optically coupled to the A/D converter 5 via a photocoupler PC. It is also connected to the CPU 7 via bus B. C
PU7 sends a control signal to A10 converter 5,
/D converter 5 sends a digital signal to CPU 7. The CPU 7 is connected via a bus B to a memory 8, which constitutes a digital signal system, and an input/output interface 9. A control interface 10 and a counter 11 are connected. The measurement data converted into digital signals is sequentially stored in the memory 8 . A keyboard for setting measurement conditions, a display for displaying measurement conditions and measurement data, a recording mechanism for recording measurement conditions and measurement data, etc. are connected to the input/output interface 9, but these are not shown. Control interface 10
A control signal for switching and driving the scanner 2, a control signal for controlling the attenuation amount of the attenuator 3, a control signal for controlling the gain of the amplifier 4, and a control signal for driving the A/D converter 5 are transmitted via the photocoupler PC. Sends out clocks, etc. The counter 11 receives data on the time required from 0P (J7 to start the scanner 2 and stabilize the analog measurement data applied to the A/D converter 5), and the count-up signal CU is used as the A/D erase signal. It is added as a start trigger for the Tough Ace 6 measurement sequence.

By the way, mechanical relays are generally used as switch elements for the scanner 2 and attenuator 3 that constitute such a device, but the response time of mechanical relays is relatively long (several ms to several ms), so the response is slow. It is necessary to start measurement operation after stabilization.

Furthermore, when the responses of the scanner 2 and attenuator 3 become stable, the analog signal system must be in a measurement standby state so that measurement based on predetermined measurement conditions can be started immediately.

Furthermore, when taking in digital measurement data from the A/D converter 5, it is necessary to wait until the analog measurement data added to the analog signal system becomes stable.

In addition, the operation of such devices can be broadly divided into input measurement and automatic calibration inside the device circuit, and automatic calibration can be performed only by switching inside the circuit, so there is no need for the waiting time that is required for input measurement. , high-speed processing can be achieved by executing the input measurement sequence and the automatic calibration sequence in separate sequences.

However, in the device shown in FIG. 2, the wait time from the start of the scanner 2 to the end of the A/D conversion operation by the A/D converter 5 is handled by the circuit configuration, and the CPU 7 is interrupted only when the A/D conversion operation is completed. A signal IR is being sent out.

(Problems to be Solved by the Invention) However, according to such a conventional configuration, the waiting time set by the circuit configuration is constant, and the processing time cannot be shortened by varying the waiting time.

Moreover, since the automatic calibration operation is also considered as one of the input measurements without distinguishing between the input measurement operation and the automatic calibration operation, unnecessary waiting time is consumed during the automatic calibration operation.

In addition, the above standby time must be set to an appropriate value depending on the type of mechanical relay used and analog measurement data, but it is difficult to make the standby time variable in a common circuit, and all It is necessary to simplify the circuit corresponding to the time, and the circuit scale becomes complicated.

The present invention has focused on these points, and its purpose is to provide a multi-point data recording device that has a relatively simple configuration and can perform high-speed processing.

(Means for Solving the Problems) The multi-point data recording device of the present invention includes a data processing means that performs predetermined data processing on multi-point measurement data via a scanner, and stores the processed measurement data in a memory. A multi-point data recording device that sequentially stores data is characterized by being provided with a counter that sets the operation standby time of each part to a predetermined value depending on the type of operation.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, and the same parts as in FIG. 2 are given the same reference numerals. In FIG. 1, 12 is a counter connected to bus B of the CPU 7.

In this counter 12, the necessary waiting time corresponding to each step of the measurement sequence is sequentially set by the CPU 7 according to the execution steps of the sequence. Then, the counter 12 counts down, and the count up signal CU
is applied each time to the CPU 7 as an interrupt signal rR. The setting of the standby time data from the CPtJ7 to the counter 12 is performed by latching it until the countdown operation of the standby time set in the previous step is completed.

In such a configuration, when the CPU 7 detects the interrupt signal IR applied from the counter 12, it assumes that the standby time assigned to that step has ended and executes the next step.

By repeating this operation for each interrupt signal, multiple combinations of waiting times can be easily realized. Note that the waiting time can be changed by changing the waiting time data set in the counter 12 from the CPU 7. and,
When a standby time is not required, such as in an automatic calibration operation, setting of standby time data from the CPU 7 to the counter 12 may be skipped, and there is no need to provide a separate operation sequence different from input measurement.

With this configuration, it is possible to set the optimum operation standby time of each part according to the type of operation without adding any special circuit, and it is possible to speed up data recording.

Further, the CPU 7 can execute the processing until an interrupt signal is applied, and the entire apparatus, including statistical processing, can achieve high-speed processing.

In the above example, an example was explained in which analog measurement data is converted into a digital signal and recorded, but contact signals or digital measurement data may also be recorded.

(Effects of the Invention) As described above, according to the present invention, a multi-point data recording device capable of high-speed processing can be realized with a relatively simple configuration, and the practical effects are great.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a conventional device.

Claims (1)

[Claims] A multi-point data recording device that sequentially stores the processed measurement data in a memory, in addition to a data processing means that performs predetermined data processing on multi-point measurement data via a scanner, wherein each part is on standby. A multi-point data recording device characterized by being provided with a counter that sets time to a predetermined value depending on the type of operation.