JPH0462302A - Data communication system for thermal apparatus - Google Patents

Abstract

PURPOSE:To transmit the analysis result for the cause of abnormality to a controller quickly when abnormality takes place on a thermal apparatus, and reduce time and labor required for the recovery by a method wherein a control device to control a thermal apparatus is connected to the operation control device side by a communication circuit, and communication data is output by the control device. CONSTITUTION:When phenomenon to obstruct the continuation of operation of a boiler is generated, the boiler is stopped by an automatic operation control device, and an alarm signal is transmitted. A DTE 12 gets access to a control program to generate a circuit connection command for a modem 13, by the alarm signal, and informs the fact of alarm generation, and at the same time, outputs a measurement data to show the operation condition of the boiler at that time to a host computer 17. When the host computer 17 fetches the measurement data through a public circuit 14, facsimile adapter 15 and modem 16, the host computer 17 analyzes the cause which has obstructed the continuation of operation and the remedy required for the recovery. The analysis result is automatically transferred to a facsimile 18 of an administrator of the device. By this method, when abnormality takes place on a thermal apparatus, communication data to show the analysis result for the cause of abnormality can be directly transmitted to a communication data output means such as facsimile equipment, etc.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a data communication system for thermal equipment that uses communication lines such as telephone lines to communicate data regarding maintenance and management of thermal equipment such as boilers. .

(Prior technology) This type of data communication system is used in thermal equipment such as small once-through boilers, and automatically sends alarm signals such as abnormal stoppage of boilers installed in remote locations from dedicated data communication equipment (DTE). It is sent to the host computer, which is the management device, via a data linking means (modem) that can make and receive calls and a public line such as a telephone line, and the host computer analyzes the cause of the abnormality based on the above alarm, and the result is As above, the information was output to the printer connected to the DTE via the modem and public line, and the manager of the thermal equipment was notified.

(Problem to be solved by the invention) By the way, the DTE and the printer connected thereto are usually installed near the boiler. On the other hand, the permanent location of the administrator who receives and receives the output information from the printer is often different from the boiler installation location, and for this reason, the results of analysis of the causes of abnormalities from the host computer are not output to the printer. However, there was a problem in that managers were not aware of this and there was a delay in obtaining the information, resulting in a delay in recovery in the case of, for example, a boiler stopping abnormally. Also, D
Since the TE performs various data communications in addition to outputting information to the printer, there may be restrictions on the printer's information output depending on the communication control capacity of the DTE. Furthermore, when the printer is of a thermal type, there is a problem in that the output image deteriorates due to the influence of heat emitted from the boiler.

The present invention has been made in view of the above-mentioned problems, and its purpose is to
An object of the present invention is to provide a data communication system for thermal equipment that can quickly transmit the analysis results of the cause of an abnormality to a manager and reduce the time and effort required for recovery.

(Means for Solving the Problems) The present invention includes a thermal device, various detection means for detecting the operating status and operation status of the thermal device, and a control system for controlling the operation of the thermal device based on a detection signal from the detection means. The apparatus comprises an operation control device for operating the thermal equipment, and a data communication means for communicating data from the operation control device, and the data communication means and the management device for managing the thermal equipment are connected via a communication line. In the data communication system of the connected thermal equipment, the operation control device side is connected to the management device through a communication line, and includes communication data output means for outputting communication data from the management device.

(Function) According to the data communication system of the present invention, the communication data indicating the analysis result of the cause of the abnormality transmitted from the management device can be transmitted to the device manager's permanent location etc. without going through the DTE. Data can be sent directly to pressure means.

Therefore, in the present invention, data from the management device can be quickly transmitted to the administrator without being affected by the DTE or thermal equipment.

(Embodiment) Hereinafter, an embodiment of the present invention will be described based on the drawings of FIGS. 1 to 4.

FIG. 1 is a schematic configuration diagram of a data communication system according to the present invention. In the figure, II indicates an automatically operated boiler as a thermal device, and the automatically operated boiler 11 is a DTE 12
When an abnormality such as an abnormal stop occurs, the measured value data at the time of the abnormality occurrence is held, an alarm signal is output, and the measured value data is output to the DTE 12. The DTE 12 is connected to a host computer 17 via a modem 13, a public line 14, a facsimile adapter 15, and a modem 16, and transmits the above-mentioned alarm signal and measurement value data to the host computer 17. The host computer 17 has a modem 16,
It is connected via a FAX adapter 15 and a public line 14 to a facsimile 18 installed at the place where the administrator of the boiler 11 resides or where the peripheral equipment of the boiler is installed.
Based on the input alarm and measurement data, the cause of the abnormality is analyzed, and the analysis results, such as data on countermeasures, are transmitted to the facsimile 18. Further, a printer 19 connected to the FAX adapter 15 is provided near the host computer 17, and outputs data input via the public line 14 and data from the host computer 17.

FIG. 2 is a configuration diagram showing a schematic configuration of the automatically operated boiler 11. In the figure, 21 indicates a boiler. The boiler 21 includes a boiler can 22, a lower header (not shown) and an upper header 49 disposed inside the boiler can 22, and a large number of water pipes 23.
It is connected to the water supply line 24. This water supply line 24
is connected to a water source, and a water supply pump 25 and a water supply check valve 26 are inserted into the water supply line 24.

On the other hand, a combustion burner (not shown) disposed within the boiler can 22 is connected to a fuel supply line 27, and this fuel supply line 27 is connected to a fuel service tank 28. The fuel supply line 27 includes a fuel pump 2.
9 and a fuel solenoid valve 30 are inserted.

In addition, in Fig. 2, 31 indicates a blower, and 3
2 indicates a water level measuring section. Although not shown, the blower 31 is provided with a damper that adjusts the amount of air blown.

The boiler 21 described above is connected to the automatic operation control device 33.
Therefore, the automatic operation control device 33 can be supplied with sensor signals from various sensors.

Regarding these sensors, when looking at the water supply line 24, the suction side water pressure sensor 34 detects the suction side pressure of the water supply pump 25, the discharge side water pressure sensor 35 detects the discharge side pressure of the water supply pump 25, and the supply from the water supply pump 25. There are a water supply flow rate sensor 36 that detects the flow rate, a water supply temperature sensor 37 that detects the temperature of the water supply, and a flow rate sensor 38 for the chemical solution mixed into the water supply.

On the other hand, regarding the fuel supply line 27, the fuel pump 29
a suction side fuel pressure sensor 39 that detects the suction side pressure of the fuel pump 29, a discharge side fuel pressure sensor 40 that detects the discharge side pressure of the fuel pump 29, a fuel flow rate sensor 41 that detects the supply flow rate from the fuel pump 29, and a fuel flow rate sensor 41 that detects the fuel temperature. Fuel temperature sensor 4 to detect
There is a second prize.

Furthermore, the boiler can 22 is equipped with a can body temperature sensor 43 that circumscribes the water pipe 23 and detects the temperature of the can body, a steam pressure sensor 44 that detects the pressure of the upper tank, and a flame detection sensor 4.
・The water level sensor 46 and the concentration sensor 47 are installed in the water level measuring section 32, and the exhaust pipe of the boiler can 22 is equipped with a water level sensor 46 and a concentration sensor 47.
There is an exhaust gas temperature sensor 48.

Sensor signals from the various sensors described above, that is, measurement data indicating the operating status of the boiler 21 are input to the automatic operation control device 33 and processed within the automatic operation control device 33. That is, the automatic operation control device 33
While the boiler 21 is in operation, measurement data input from various sensors is constantly stored in a storage unit (not shown), and the data is updated to new values. every interval, e.g. 1se
The data is stored in the storage unit every few seconds starting from c, and its data value is updated. Automatic operation control device 33
determines the operating state of the boiler 21 based on the data stored in the storage unit according to the control program. and,
If the automatic operation control device 33 determines from the above data that it is dangerous to continue operating the boiler 21, it abnormally stops the boiler 21 and outputs an alarm signal to the DTE 12, and It outputs to the DTE 12 the amount of data stored in the storage unit up to several minutes before the abnormal stop, that is, data on time changes over several minutes of various sensor signals and on/off signals of various devices.

The DTE 12 has a configuration as shown in Figure 3.
The boiler status signal and alarm signal output from the automatic operation control device 33 are sent via a serial interface (serial I
/F) 51, sensor signals of various sensors from a water softener etc. other than the boiler are sent to an analog/digital converter (A/DC) 52, which is connected to each device constituting the boiler 21, that is, the fuel solenoid valve 30 mentioned above. On/off signals indicating the operating positions of various valves such as the water supply pump 25, fuel pump 29, blower 31, etc. are transmitted through the digital input/output port (D
110) 53 respectively.

When the central processing unit (CPU) 54 of the DTE 12 receives an alarm signal from the serial I/F 51 via the pass line 55, the alarm signal is stored in the control program storage unit 56 made of non-volatile memory such as ROM. According to the control program, various sensor signals input from the A/D C 52 and on/off signals of various devices manually input from the DI 1053 are temporarily stored in the measurement data storage unit 57 consisting of a volatile memory such as RAM via the path line 55. .

The data stored in the measurement data storage section 57 is stored in the CPU 5.
4, hash line 55 and serial I
It is output to the modem 13 via /F58. Also, C.P.
The U54 connects the keyboard 6 via the serial I/F59.
Data stored in the measurement data storage section 57 can be output to the display 62 via the lotus line 55 and the interface 61 based on control signals such as display instructions input from 0.

Further, the timer counter 63 counts the input pulse signals, and the CPU 54 performs time-sharing control of each device connected to the pass line 55 to input and output data according to this count value. . calendar clock 64
outputs data indicating the month and day, and the CPU 54 outputs data indicating the month and day.
For example, when outputting the data stored in the measurement data storage section 57 to the modem 13 or the display 62, data indicating the month and day can be added and output.

The DTE 12 can also be connected to a local monitoring system having a large host computer that centrally manages multiple boilers via the serial I/F 65 and a dedicated line (not shown). The data read from 57 is transferred to the serial I/F.
65 and a dedicated line to a local monitoring system.

The configuration of the FAX adapter 15 including the modem 16 is represented by blocks as shown in FIG. The NC0 unit 71 is a communication control unit that controls the input pressure of data with the communication partner DTE 12 and facsimile 18 via the modular jack 72 and the public telephone line 14. The data input from the modular jack 72 is demodulated by the modem 15. and outputs it to the command execution unit 73. The command execution unit 73 outputs the command added to the data to the command reading unit 74, and also outputs the data to the memory unit 75 consisting of volatile memory.
Output and store it in . In addition, the command execution unit 73
Depending on the decoding result from the command reading unit 74, eight switching signals for each port are sent to the boat selector 77. The command reading unit 74 decodes input commands and outputs the decoding results to the command execution unit 73 and command recognition unit 76. The command recognition unit 76 recognizes the command based on the decoding result, and reads predetermined data from the memory unit 75 in accordance with the recognition. boat selector 77
selects each of the interfaces 78 to 80 to which the host computer 17 and printer 19 are connected in response to a switching signal from the command execution section 73, and connects the selected one interface to the memory section 75.

Each of the interfaces 78 to 80 is connected to the communication port 82 of the printer input/output port 8L of the host computer 17 and the interface 83 of the printer 19, and is connected to the FAX adapter 15 and the host computer 17.
It also enables input and output of data to and from the printer 19.

As a result, if, for example, an event occurs that impedes the continued operation of the boiler, and the boiler is stopped by the automatic operation control device 33 and an alarm signal is issued, DTE 1
2 accesses a control program that generates a line connection command for the modem 13 in response to the above alarm signal, notifies the fact that an alarm has occurred, and hosts measurement data indicating the operating status of the boiler 21 at that time via the public line 14. Output to computer 17. When the host computer 17 inspects the public line 14, the FAX adapter 15, and the modem 16 and takes in the measurement data, it analyzes the cause of the obstruction to continued operation and the countermeasures necessary for recovery.

The analysis results from the host computer 17 are arranged in a predetermined format and automatically transferred via the modem 16, FAX adapter 15, and public line 14 to the facsimile machine 18 installed at the device administrator's permanent residence. Ru.

Note that the DTE 12 can also transmit measurement data in response to a transmission request from the host computer 17 to improve the efficiency of data transmission. Furthermore, the host computer 17 may be placed in a building where the boiler is installed, or may be located at a remote location.

Therefore, in this embodiment, the analysis results such as causes and countermeasures based on alarms and measurement data transmitted from the DTE 12 via the public line are sent directly to the device manager's permanent location, etc., without going through the DTE 12. Since the data can be automatically forwarded to the facsimile 18 installed at
The time and effort required to restart thermal equipment can be significantly reduced.

In the embodiments of the present invention, boilers have been described as thermal equipment, but the present invention is not limited to this one embodiment, and can be applied to refrigerators, cooling towers, other thermal equipment, wastewater treatment equipment, etc. Of course, it can also be applied.

(Effects of the Invention) As explained above, according to the operational abnormality monitoring device of the present invention, a thermal equipment main body and various devices constituting this main body are combined, and the operating status of the thermal equipment main body and various devices can be monitored. Various detection means for detecting operating conditions, an operation control device that controls the operation of various devices based on the detection signals from the detection means and causes the thermal equipment to operate, and data from the operation control device is communicated. In a data communication system for thermal equipment, the data communication means and a management device for managing the thermal equipment are connected via a communication line, the data communication system being connected to the management device on the operation control device side via a communication line. Since it is equipped with a communication data output means that outputs communication data from the management device, when an abnormality occurs in thermal equipment, the communication data indicating the analysis result of the cause of the abnormality can be sent to the DTE at the equipment manager's permanent location. By sending the data directly to a communication data output means such as a facsimile machine without going through the network, the analysis results of the cause of the abnormality can be quickly communicated to the administrator, reducing the time and effort required for recovery. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of a data communication system according to the present invention, FIG. 2 is a schematic diagram of an automatically operated boiler to which the present invention is applied, and FIG. 3 is an example of an implementation of DTE. FIG. 4, a block diagram showing the configuration of an example, is a schematic diagram of a FAX adapter used in the present invention. 11... Self-driving boiler, 12... Dedicated data communication equipment (DTE), 13.16... Modem, 14.
...Public line, 15...Fax adapter, 17...Host computer, 18...Facsimile, 19...Printer.

Claims (1)

[Claims] Thermal equipment, various detection means for detecting the operating status and operating status of the thermal equipment, and an operation control device that controls the operation of the thermal equipment based on the detection signal from the detection means and causes the thermal equipment to operate. , a data communication means for communicating data from the operation control device, and a data communication system for thermal equipment in which the data communication means and a management device for managing the thermal equipment are connected via a communication line, an operation control device 1. A data communication system for thermal equipment, comprising communication data output means that is connected to the management device via a communication line and outputs communication data from the management device.