JPH0241078B2 - KEISOKUSEIGYOSHORISOCHINYURYOKUSEIGYOHOSHIKI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an input control method for a measurement control processing device, and particularly to a measurement control processing device that is in a normal operating state or in an abnormal operating state exceeding a preset operating range. The present invention relates to an input control system for a state signal that is set in advance in response to input states or the like when the operating state is not normal.

A plurality of sensors are arranged, and the data acquired by these sensors is transmitted to a data processing device with a built-in control program in advance via a wired or wireless data transmission path using a data transmission/reception circuit such as MODEM. Measurement control processing devices that perform predetermined processing on the data and display it on a display circuit or the like have been well known in recent years.

The data processed by such a measurement control processing device can be roughly divided into sensor data from sensors, and information on the presence or absence of abnormalities in the operating state or input state due to failures, erroneous operations, and data transmission path conditions of the measurement control processing device itself. It is also well known that there are so-called status signals that indicate.

For example, in the case of the aforementioned data transmitting/receiving circuit, such status signals are used to monitor the power supply voltage level, input signal level, and other voltage levels necessary to maintain the operating status of the equipment at its rating and safely. In order to do this, a status signal generation circuit, etc. that generates a status signal with preset contents that differ depending on whether or not these voltage values are within the rated level is installed in the circuits required by the target equipment. These status signals are sent to the data processing device in the same way as sensor data, and the data processing device uses the contents of the status signals to know whether there is an abnormality in the system operation of the measurement control processing device or the component equipment, and to detect an abnormality in the case of an abnormality. This is displayed and monitored, and control signals to suppress abnormal conditions are transmitted to the target equipment as necessary.

The target device for generating this status signal may be any previously specified component device, or may be provided in any circuit portion whose operating status is to be monitored.

Conventionally, the following two methods have been generally used to input this type of status signal from the generation point in the measurement control processing device to the data processing device.

The first method is called an interrupt method, which generates an interrupt signal to the data processing device when a change in the state signal occurs, and thereby causes the state signal data to be input to the data processing device. In this case, interrupt input processing is usually not performed unless a change in the status signal occurs.

According to this method, only when a change in the status signal occurs is detected and interrupt processing is performed.
This has the advantage that no unnecessary time is consumed, and therefore, the data processing device only needs to process the sensor data during this interrupt processing. However, when status signal data is input continuously, the time required for this interrupt processing, so-called overhead time, takes up most of the data processing device's operating time, making it impossible to perform the original sensor data processing. It has the disadvantage of being stored away.

The second method is called a scanning method, which scans the status signal input circuit with a constant input scanning time, ie, input scanning time and order, regardless of whether or not a change in the status signal occurs. This data is loaded into a data processing device and changes in the status signal are checked.

According to this method, the above-mentioned constant state input scanning is normally performed at a fixed time interval that is extremely long compared to the sensor data input time, and the state signal data is captured, which is a big problem for the data processing device. This has the advantage of not creating a processing load. However, according to this method, scanning processing is performed regardless of whether or not state signal data is generated, so processing is required even when no state signal data is generated, which wastes the processing time of the data processing device. It has the disadvantage of getting used to it.

FIG. 1 is a block diagram showing the basic configuration of a conventional state signal input control system. FIG. 1A is a block diagram of a state signal input control method using an interrupt method, and FIG. 1B is a block diagram of a state signal input control method using a scanning method.

In FIG. 1A, the status signal generation circuit 1 includes a plurality of n detection relays 11-1, 11-2, . . . provided in a plurality of circuits specified in advance of the measurement control processing device.
11-n, etc., and a status signal generator 12, which detects a plurality of types of status signals. Detection relay 11-
1, 11-2,...11-n, etc. are normally connected to contact a, but if an abnormal condition that deviates from the rated operating conditions occurs in the circuit of the target device where one of these detection relays is installed. Then, a relay circuit (not shown) drives these detection relays.
operates, and the detection relay contacts contact b, generates a pulse voltage, etc. at a preset level, and sends it to the status signal generator 12.

The status signal generator 12 includes an input gate circuit, a coder, etc., and inputs the input pulses input through the input gate circuit to the coder, thereby generating a binary logic value code series that is different for each detection relay. signal,
A predetermined number of bits is sent as a status signal to the status signal output gate circuit 2 and the status signal change detection circuit 3 via output lines 12-1, 12-2, . . . 12-n. The above-mentioned status signal is the rated operating state of the circuit in which each detection relay is arranged, for example, when the output level exceeds the rated maximum output in the case of a power supply circuit, etc. When each detection relay is connected to contact a, that is, when the operating state of the target device is maintained at the rated value and is in a normal state, the output of the status signal is The status signal is set to the value "0" level or is set to a prespecified common logic value code series.

Now, the state signal sent to the state signal change detection circuit 3 is used to detect a change in the state signal.

The state signal change detection circuit 3 includes a ROM containing a program in advance, a shift register circuit, an interface circuit, n flip-flop circuits equal to the number of state signal input channels, etc.
Under the control of the built-in program in the ROM, when the input status signal is within a preset value, it is determined that the content indicated by this status signal is normal, and no status change signal is output, and the status signal is If it shows a value different from the above-mentioned normal state, it is determined to be an abnormal state, and the state change data corresponding to this content, which differs for each state signal input channel, is input to the flip-flop circuit via the shift register circuit and the interface circuit. Then, the flip-flop circuit generates a state change signal having a predetermined logic sign and sends it to the interrupt signal generation circuit 4 via the output line 31.

The interrupt signal generation circuit 4 is equipped with a ROM containing a program in advance, n output pulse forming circuits equal to the types of status signals, etc., and each time a status change signal is input, the output pulse generation circuit 4 differs for each status signal and is specified in advance. An interrupt signal having a number of bits and a logic value code sequence is generated and sent via an output line 41 to a data processing device 100 having a data processing function of a measurement control processing device. The data processing device 100 includes a CPU having programs for control and processing, and inputs sensor data and status signal data to be handled by the measurement control processing device, and controls and processes the data. When the data processing device 100 receives an interrupt signal, it sets the processing mode to interrupt processing under the control of the built-in program, and outputs the output line 2.
1, the status signal data sent from the status signal output gate circuit 2 can be input.

The interrupt signal generation circuit 4 also converts the input state change signal into n state signal output gate pulses having a predetermined level and different for each state signal via an output pulse forming circuit and outputs the state signal output gate via an output line 42. Send to circuit 2.

On the other hand, the status signal output gate circuit receives the status signal input via any of the output lines 12-1, 12-2,...12-n, etc., writes it to the built-in RAM, and then Read output line 12 under the control of the built-in program in the ROM.
Out of n output logic gate circuits corresponding to 1, 12-2, .

This output logic gate circuit receives an output gate operation for the output logic gate circuit to which the state signal is input by the state signal output gate pulse received from the interrupt signal generation circuit 4 together with the generation of the state change signal, and the state signal is transmitted to the local bus line. 21 as status signal data to the data processing device 100, where it undergoes predetermined processing.

In this way, when there is a change in the status signal detected by the status signal generation circuit 1, that is, when there is a change in the status signal detected by the status signal generation circuit 1, that is, when there is a change in the operating status of the circuit of the related target equipment such as the detection relays 11-1, 11-2,...11-n, etc. It is possible to perform control such that the status signal data is input to the data processing device each time by an interrupt method only when there is an abnormality.

In the case of inputting the status signal by the scanning method shown in FIG. 1B, the status signal data is inputted to the data processing device 100 by the status signal scanner circuit 5, and this is performed as follows.

In FIG. 1B, a state signal generation circuit 1, a state signal output gate circuit 2, and a data processing device 10
0, etc. are the same as those with the same symbols in FIG. 1A, and detailed explanations regarding these will be omitted.

The status signals sent to the status signal output gate circuit 2 via the output lines 12-1, 12-2, . . . 12-n, etc. are output lines 12-1, 12-2, .
12-n corresponding to n output logic gate circuits.

The status signal scanner circuit 5 includes a RAM, a ROM containing a program in advance, a clock signal generation circuit, an interface circuit, and n flip-flop circuits corresponding to the number of status signal output lines and the types of status signals. scanning control signals specifying the start and end of status signal scanning, the setting order of flip-flop circuits, etc. is input and written to RAM, read out under the control of the ROM program, and then sends the clock signal to n flip-flop circuits in the order specified by the scanning control signal to be used as the next one. Next, the n scanning signals of the flip-flop circuit generated thereby are sent to each of the n output logic gate circuits of the status signal output gate circuit 2 via the output line 52, respectively. The output line 52 is thus connected to the n flip-flop circuits of the status signal scanner circuit and the n output logic gate circuits of the status signal output gate circuit 2 via the output line 52 of n lines, and The state signals are scanned at a repetition time and operation order specified in advance by a built-in program, and are input to the data processing section 100 one after another via the local bus line 21.
00 checks this content under the control of a built-in program, and if there is a change in the status signal, it is controlled and processed.

As mentioned above, the conventional state signal input control systems shown in FIGS. 1A and 1B have their own characteristics as well as their own drawbacks.

An object of the present invention is to eliminate the above-mentioned drawbacks, and to provide a state signal input control method for a measurement control processing device that includes both an interrupt method and a scanning method, and to constantly input state signals using the interrupt method. When a change occurs in the status signal, the status signal is input by immediately switching to the scanning method, and when the status signal no longer changes, the status signal is restored to the interrupt method and input again. By inputting data into the measurement control processing device, the processing load on the data processing device due to continuous generation of status signals can be significantly reduced, and the processing load can be flattened regardless of the frequency of occurrence of status signals. The objective is to provide a control method.

The method of the present invention is an input control method for a measurement control processing device in which data acquired by a sensor is received via a data transmission path, and the data is measured, controlled, and processed by a data processing device that has a built-in control program in advance. is installed in a plurality of circuits specified in advance of the measurement control device, and generates n (n is a positive integer greater than 1) types of status signals indicating whether the operating state of the measurement control device is normal or not. a state signal output gate circuit having a state signal generation circuit, n output gate circuits that receive a plurality of state signals outputted from the state signal generation circuit and gate them so as to output them independently; a state signal change detection circuit that receives the state signal output from the signal generation circuit and detects change information; and an emergency interrupt for the data processing device upon receiving change information of the state signal detected by the state change detection circuit. an interrupt signal generation circuit that generates a signal and inputs the status signal generated by the status signal generation circuit to the data processing device via the status signal output gate circuit; a status signal scanner circuit that successively gates n output gate circuits of the signal output gate circuit to output the status signal;
Normally, the state signal is inputted by the interrupt input by the interrupt signal generation circuit, and after the state signal change detection circuit detects a change in the state signal, the state signal is inputted by the state signal scanner circuit, and the state signal is inputted by the state signal scanner circuit. and a status signal input control means for causing the interrupt signal generation circuit to input the status signal again when the status signal stops changing by the signal change detection circuit.

Next, the present invention will be explained in detail with reference to the drawings.
FIG. 2 is a block diagram showing one embodiment of the present invention.

In FIG. 2, a status signal generation circuit 1, a status signal output gate circuit 2, a status signal change detection circuit 3, an interrupt signal generation circuit 4, and a status signal scanner circuit 5 have the same symbols and contents as in FIG. Detailed explanations regarding individual contents will be omitted.

The embodiment of the present invention shown in FIG. 2 includes a status signal input control circuit in addition to the above-described configuration.

The status signal input control circuit 6 includes a control program for controlling input of status signals.
ROM, data processing device 100 to control line 6
Read the status signal input switching signal received through 1.
It includes a RAM, n analog gate circuits, etc., and controls the input of status signals by the interrupt signal generation circuit 4 and the status signal scanner circuit 5 as follows.

In other words, the status signal input control circuit 6 constantly controls the interrupt signal output from the interrupt signal generation circuit 4 by switching the status signal input received via the output line 61 under the control of the built-in program of the data processing device 100. is sent to the data processing unit 100 via an output line 41, and is also controlled to receive a status signal output gate pulse via an output line 42.

This control is performed when a state change signal is not output from the state signal change detection circuit 3, that is, when the state signal generated by the state signal generation circuit 1 is the operating state of the circuit corresponding to each detection relay of the detection relay group 11. indicates that the status signal is normal, the input of the status signal is always on standby as an interrupt method performed via the interrupt signal generation circuit 4, and when a status change signal is generated, that is, the status signal is input by the status signal generation circuit 1. If the status signal generated by the detection relay group 11 indicates that the operating status of the circuit corresponding to each detection relay in the detection relay group 11 deviates from the rating and is abnormal, the input of the status signal is immediately input to the status signal scanner circuit. 5
The scanning method is switched to the scanning method that is performed via the .

Output line 12-1 from status signal generation circuit 1,
12-2, . . . 12-n, etc., are sent to the state signal output gate circuit 2 and the state signal change detection circuit 3. In order to take in this status signal from the status signal output gate circuit 2 to the data processing device 100 via the local bus line 21, it is performed through the operation of the interrupt signal generation circuit 4 or the status signal scanner circuit 5, but in this embodiment In this case, the interrupt signal is sent from the interrupt signal generating circuit 4 to the data processing device 1 via the output line 41.
00, the status signal input control circuit 6 controls the program of the built-in ROM by the status signal input switching signal received via the output line 61 under the control of the program of the data processing unit 100. The scanning control signal received from the data processing device via the output line 51 is also not sent to the status signal scanner circuit 5. The state signal is normally in this state, but in the case of an abnormality that occurs infrequently, the interrupt signal generation circuit 4 sends an interrupt signal to the data processing device 100 via the output line 41, and also outputs the state signal output gate pulse via the output line 42. is sent to the status signal input control device 6, and the status signal input control circuit 6, which receives it, outputs the status signal output gate pulse as a status signal output gate pulse via one of the n analog gate circuits under the control of a built-in program. 62 to the status signal output gate circuit 2, the status signal at the time of abnormality is inputted to the data processing device 100.

This type of interrupt method is used constantly to input status signals during abnormalities that occur infrequently and intermittently, but these status signals during abnormalities are used to control the operation of each device that makes up the measurement control processing device. It is generated by detecting the presence or absence of an abnormality in the state or interference received from the outside, such as radio wave interference received by carrier radio waves when transmitting data acquired by a group of sensors using a wireless transmission method.
In other words, it is an alarm signal for maintaining the operation of the measurement control processing device, and the circuit section that detects this status signal is installed in a place that is important for maintaining the function of the measurement control processing device and is expected to occur frequently. is normal.

Therefore, it is not uncommon for the status signals generated during such abnormalities to occur repeatedly and continuously, and most of the status signals generated due to human malfunctions of operators operating the measurement control processing device are It tends to be accompanied by continuous occurrence.

As mentioned above, under such a condition, the data processing device 100 will obviously become overwhelmed with just interrupt processing of the status signal, and in severe cases, it will be unable to perform the original sensor data processing. That's right.

Therefore, in this embodiment, the interrupt signal outputted from the interrupt signal generation circuit 4 via the output line 41 is also sent to the status signal input control circuit 6.
Under the control of the built-in program in the ROM, when the number of occurrences and the interval of occurrence meet predetermined conditions, the status signal continuous generation information is immediately sent to the data processing device 100 from the status signal input control circuit via the control line 61. urge

Upon receiving this status signal continuous generation information, the data processing unit 100 receives the status signal to switch to a scanning method in which the status signal is input via the status signal scanner circuit 5 via the control line 61 under the control of the built-in program. An input switching signal is sent to the status signal input control circuit 6, and a scanning control signal is sent out via the output line 51. In this state, the status signal input control circuit 6 receives the scanning signal outputted from the status signal scanner circuit 5 via the output line 52, and, under the control of the built-in program in the ROM, interrupt signal generation circuit 4. The input of the interrupt signal received via the output line 41 is connected, but the input of the status signal output gate pulse received via the output line 42 is stopped;
The scanning signal received from the status signal scanner circuit 5 via the output line 52 is sent to the status signal output gate circuit 2 via the analog gate circuit and the output line 62, and the scanning signal is sent to the status signal output gate circuit 2 via the analog gate circuit and the output line 62, and the scanning signal is sent to the status signal output gate circuit 2 via the analog gate circuit and the output line 62. Gate scanning is performed so that the n output logic gate circuits of the state signal output gate circuit are outputted one after another at a period of , and the state signal is inputted to the data processing section 100.

In this way, when status signals are generated continuously, the interrupt method is switched to the scanning method and stops, and when the state returns to the original state, the status signal input is switched from the scanning method to the interrupt method again. is performed as follows.

That is, as described above, the interrupt signal inputted from the interrupt signal generation circuit 4 to the status signal input control circuit 6 via the output line 41 is generated while inputting the status signal by the scanning method. The input is continued even when the occurrence of the occurrence exceeds a preset continuous occurrence condition and is in a continuous state, and this occurrence state is constantly checked under the control of the built-in program in the ROM. When the frequency of occurrence of the status signal currently being input by the scanning method returns to the original state from the above-described continuous occurrence condition set in advance, the status signal input control circuit 6 obtains this information and immediately performs the above-described operation. Operates to switch to interrupt-based operation. Therefore, the state signal is controlled to be inputted from the state signal output gate circuit 2 to the data processing section 100 via the interrupt signal generation circuit 4 and the state signal input control circuit 6 again.

In this way, depending on the frequency of occurrence of the status signal, when the occurrence frequency is intermittent and low, the interrupt method is used, and when the occurrence frequency exceeds a preset number of times and intervals and the occurrence state is continuous, scanning is performed. Furthermore, when the continuous generation state changes to the intermittent generation state again, the state signal input operation can be efficiently carried out by switching to the interrupt method again.

The present invention is a state signal input control method for a measurement control processing device, which includes both an interrupt method and a scanning method, and a state signal is normally input by the interrupt method, and the frequency of occurrence of this state signal is set in advance. When the signal is input in a continuous state exceeding the generation condition, it is switched to the scanning method and inputted, and when the state signal generation state returns from the continuous state to the normal state, it is switched again to the interrupt method and inputted.
The basic feature is that the processing load of status signal data by the data processing device in the measurement control processing device can be significantly reduced by inputting the status signal by taking advantage of the characteristics of the interrupt method and scanning method. , various modifications of the embodiment of the invention shown in FIG. 2 are possible.

For example, in the embodiment of FIG. 2, the input of the state change signal change detection circuit 3 is the state signal generator 12.
I am using the status signal data output from
It is clear that this can be easily implemented by using the connection/disconnection information of any one of the detection relays in the detection relay group 11, and also the generation state of the status signal as a condition for switching from the interrupt method to the scanning method. The number of occurrences and the interval can be set arbitrarily; for example, when the status signal is 1
There is no problem with changing the input method if even a single error occurs, and it is clear that this can be set arbitrarily as desired by taking into account the operational purpose of the measurement control processing device, the contents of the status signal, etc. It is clear that the generator 12 can be easily combined with the status signal output gate circuit 1 to achieve structural integration, and all of the above can be easily implemented without detracting from the spirit of the present invention. It is something that can be implemented.

As explained above, according to the present invention, the state signal input control method of the measurement control processing device includes both the interrupt method and the scanning method, and the interrupt method is used at all times, and when the state signal is continuously generated. For measurement, the scanning method is switched to input the status signal, and when the status signal generation returns to normal, the interrupt method is switched again and the status signal is inputted to improve the efficiency of status signal input processing. The present invention has the effect of realizing a measurement control processing device input control method that can significantly reduce the processing load of the data processing device in the control processing device and, therefore, greatly improve the processing efficiency of sensor data.

[Brief explanation of the drawing]

Figure 1 shows the interrupt method of the conventional status signal input method.
FIG. 2 is a block diagram showing the general configuration of scanning method (A) and scanning method (B), and FIG. 2 is a block diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Status signal generation circuit, 2... Status signal output gate circuit, 3... Status signal change detection circuit, 4...
...Interrupt signal generation circuit, 5... Status signal scanner circuit, 6... Status signal input control circuit, 11... Detection relay group, 12... Status signal generator, 100...
...Data processing equipment.

Claims (1)

[Claims] 1. In an input control method of a measurement control processing device that receives data acquired by a sensor via a data transmission path and measures, controls, and processes the data by a data processing device that has a built-in control program in advance,
A status signal that is installed in a plurality of circuits specified in advance of the measurement control device and generates n (n is a positive integer greater than 1) types of status signals indicating whether the operating state of the measurement control device is normal or not. a state signal output gate circuit having n output gate circuits that receive a plurality of state signals outputted from the state signal generation circuit and gate the state signals so as to output each of them independently; a state signal change detection circuit that receives a state signal output from the circuit and detects change information; and a state signal change detection circuit that receives change information of the state signal detected by the state change detection circuit and generates an emergency interrupt signal to the data processing device. an interrupt signal generating circuit that interrupts and inputs the state signal generated by the state signal generating circuit to the data processing device via the state signal output gate circuit; and outputting the state signal at predetermined time intervals and in a predetermined order. a status signal scanner circuit that successively gates the n output gate circuits of the gate circuit to output the status signal; and a status signal scanner circuit that normally inputs the status signal with an interrupt input from the interrupt signal generation circuit and detects a change in the status signal. After the change in the state signal is detected by the circuit, the state signal scanner circuit inputs the state signal, and when the state signal change detection circuit stops changing the state signal, the interrupt signal generation circuit again inputs the state signal. 1. A measurement control processing device input control method, comprising: a state signal input control means for inputting a state signal.