KR20060076181A - Internet data logger in stager tele-monitoring system - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

It is about the chimney remote monitoring system (TELE-MONITORING SYSTEM, TMS).

2. The technical problem to be solved by the invention

Provides internet data logger in chimney remote monitoring system.

3. Summary of Solution to Invention

In order to achieve the above object, the present invention collects, analyzes and stores the data measured by the measuring device and sends it to the main computer in real time. Internet data logger system in chimney remote monitoring system that can collect

4. Important uses of the invention

Used in chimney remote monitoring system (TELE-MONITORING SYSTEM, TMS).

Chimney, remote, surveillance, system, TMS

Description

Internet data logger in chimney remote monitoring system {INTERNET DATA LOGGER IN STAGER TELE-MONITORING SYSTEM}

Figures 1a to 1d is an illustration of 5 minutes (average) data collection.

2A and 2B are diagrams for explaining types of states.

3 is a diagram showing a basic format of a data transmission / reception form.

4 is a view showing the type of output of the discharge shop.

Figure 5 is a view showing the discharge measurement data.

6 is a view showing discharge company phase (setting) setting data.

Fig. 7 is a diagram showing the types of main computer remote control commands.

Fig. 8 shows the general computer remote control general command format.

9 shows a master computer data manual transfer command;

10 is a diagram for explaining transmission and reception codes.

11 is a view showing a data transmission procedure of a discharge shop.

Fig. 12 is a diagram showing a remote control command of the host computer.

Fig. 13 is a diagram showing a case where a transmission error occurs.

Fig. 14 is a diagram showing a case where the buffer of the main computer is saturated.

FIG. 15 illustrates priority control. FIG.

Fig. 16 is a diagram showing a communication matrix table.

17 shows a case of normal processing;

Fig. 18 shows the case of X-ON / OFF processing.

19A and 19B are diagrams showing the data transmission procedure of the discharger.

20 is a diagram showing a procedure when a transmission error occurs.

Fig. 21 is a diagram showing the procedure when the buffer of the host computer is saturated.

Fig. 22 is a diagram showing a procedure when no response occurs.

Fig. 23 is an illustration of a method of making a checksum.

24A and 24B show a system operation menu.

The present invention relates to a chimney remote monitoring system (TELE-MONITORING SYSTEM, TMS), and more particularly to an Internet data logger in a chimney remote monitoring system. Typically, gas stacks containing pollutants are emitted from workplace chimneys. In the Air Quality Preservation Act, the amount of flue gas is regulated by using the emission allowance standard.As a method of measuring the amount of the discharged gas, until 1996, measurement personnel directly climbed the chimney, put a sensor into the measuring hole, and measured the characteristics of the emission gas. It had to be measured. However, since the measurement of the exhaust gas properties is dangerous and cumbersome, since 1996, an automatic sensor was installed directly inside the chimney and a method of transmitting data on the exhaust gas properties obtained from the sensor to the central control center began to be used. It is called Tele Metering System (TMS).

In general, the emission characteristics of telemetry systems installed in a chimney are dust, O2, Co, Nox, Sox, exhaust gas flow rate and exhaust gas temperature. The chimney flue gas profile data is transmitted to the central processing unit as exhaust gas input data.

In general, the telemetry system installed in the chimney is an oxygen sensor for measuring the exhaust gas and the oxygen concentration of the chimney, and an oxygen measurement for analyzing the detected value by amplifying and modifying a unique signal (for example, RS485 communication standard) from the oxygen sensor. Device, a dust sensor for measuring the concentration of pollutants in the flue gas, a dust measuring device for amplifying and modifying a unique signal (for example, RS485 communication standard) from the dust sensor and analyzing the detected value, and the flue gas A sulfur oxide measuring sensor for measuring sulfur oxides, a sulfur oxide measuring device which receives a unique signal (eg, RS485 communication standard) from a sulfur oxide measuring sensor and amplifies and deforms and analyzes the detected value, and nitrogen of the flue gas Amplified and deformed signals are received from the nitrogen oxide measuring sensor and the nitrogen oxide measuring sensor for measuring the oxide. A nitrogen oxide measuring device that analyzes the detected value, a carbon monoxide measuring sensor for measuring carbon monoxide in the flue gas, and a carbon monoxide measuring signal by amplifying and modifying a unique signal (eg, RS485 communication standard) from the carbon monoxide measuring sensor. Measuring device, flow sensor for measuring the flow rate of the flue gas, flow rate measuring device for amplifying and transforming a unique signal (for example, RS485 communication standard) from the flow sensor and analyzing the detected value, A temperature sensor for measuring temperature, a temperature measuring device for receiving an inherent signal (for example, RS485 communication standard) from the temperature sensor, amplifying and modifying the detected value, and analyzing a detection value; Dust measuring device; Sulfur oxide measuring device; Nitrogen oxide measuring device; Carbon monoxide measuring device; Flow measuring device; It consists of a data logger for integrating and transmitting the output of the temperature measuring device.

It is an object of the present invention to provide an internet data logger in a chimney remote monitoring system.

Those skilled in the art to which the present invention pertains can easily recognize other objects and advantages of the present invention from the drawings, the detailed description of the invention, and the claims.

In order to achieve the above object, the present invention collects, analyzes and stores the data measured by the measuring device and sends it to the main computer in real time. In the Internet data logger system in the chimney remote monitoring system capable of collecting the data, it is possible to generate 5 minutes and 30 minutes of data as the measurement data, and to collect the measurement values from the measuring device at least once per second. If the data transmission interval of the device is longer than this, the previous collection value is used), and the reliability of the data and the degree of measurement are used, so remote diagnosis, measuring device and status output function of the data collection device are included. There is a storage function that can hold more than 15 days with the status (3-10 seconds / 1 minute data data generation and transmission if necessary), Program can be changed remotely using voice memory, supports all LAN, wireless, dedicated line (RS-232C) methods, and user-specific passwords and user rights can be restricted to prevent any changes such as configuration. This operation is possible only for a specific person designated by the control center, and it is automatically assigned for each measurement data to prevent any change of the measurement data, and uses a security code to check whether the data has been tampered with later. In case of self error of data collection device, it supports automatic Rebooting function using Watch dog Timer, keeps error and status of data collection device as log data, and transmits data according to transmission method (LAN, wireless, leased line) Communicate with unique protocol, check status and manage operating environment at remote site, and data collection device is 30 minutes It transmits data, and if there is a transmission error, it transmits by other data transmission method so that there is no problem in real-time control, immediately sends data in case of warning and alarm situation corresponding to emission allowance standard, and has auto dump function (2 hours) In addition, the console port is supported for program patch, setting value change and log file check of the data collection device, and modification can be made at a remote location. The data collection device can transmit data to the server of the control center through the VPN (Virtual Private Network) device, and the interface of the data collection device and intermediate data collector for wireless communication and dedicated line communication is RS-232C (DB-9). By using the program, the program should be stored in the ROM and operated. The upgrade is performed by replacing the ROM. The coefficient information is encrypted and stored so that users can not edit it arbitrarily.If the constant value is changed, the final constant value is automatically sent to the control center when the changed value is applied. If transmission is not possible due to communication problems, it is automatically transmitted from old untransmitted data within 3 days at the beginning of transmission.If abnormal status indication such as calibration of measurement items occurs, the relevant item is converted. And a method of calculating a search value at the time of a remote search without performing correction, provides an Internet data logger system which makes an average value of the last 10 seconds of the search time for Zero and Span search respectively.

The following merely illustrates the principles of the invention. Therefore, those skilled in the art, although not explicitly described or illustrated herein, can embody the principles of the present invention and invent various devices that fall within the spirit and scope of the present invention. In addition, all conditional terms and embodiments listed herein are in principle clearly intended to be understood solely for the purpose of understanding the concept of the invention and are not to be limited to the specifically listed embodiments and states. do. In addition, it is to be understood that all detailed descriptions, including the principles, aspects, and embodiments of the present invention, as well as listing specific embodiments, are intended to include structural and functional equivalents of these matters. In addition, these equivalents should be understood to include not only equivalents now known, but also equivalents to be developed in the future, that is, all devices invented to perform the same function regardless of structure. Thus, for example, it should be understood that the block diagrams herein represent a conceptual view of example circuitry embodying the principles of the invention. Similarly, all flowcharts, state transitions, pseudocodes, and the like are understood to represent various processes performed by a computer or processor, whether or not the computer or processor is substantially illustrated on a computer readable medium and whether the computer or processor is clearly shown. Should be.

The functionality of the various elements shown in the figures, including functional blocks represented by a processor or similar concept, can be provided by the use of dedicated hardware as well as hardware capable of executing software in association with appropriate software. When provided by a processor, the functionality may be provided by a single dedicated processor, by a single shared processor or by a plurality of individual processors, some of which may be shared. In addition, the explicit use of the terms processor, control or similar terminology should not be interpreted exclusively as a citation of hardware capable of executing software, and is not intended to be used to store digital signal processor (DSP) hardware or software without limitation. It should be understood that it implicitly includes ROM, RAM, and non-volatile memory. Other hardware for the governor may also be included. Similarly, the switches shown in the figures may be presented conceptually only. It is to be understood that the action of these switches can be performed manually or through the interaction of program control and dedicated logic via program logic or dedicated logic. Certain techniques may be selected by a designer with a more detailed understanding of the disclosure.

In the claims of this specification, components expressed as means for performing the functions described in the detailed description include all types of software including, for example, a combination of circuit elements or firmware / microcode, etc. that perform the functions. It is intended to include all methods of performing a function which are combined with appropriate circuitry for executing the software to perform the function. The invention, as defined by these claims, is equivalent to what is understood from this specification, as any means capable of providing such functionality, as the functionality provided by the various enumerated means are combined, and in any manner required by the claims. It should be understood that.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same components as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The data logger collects, analyzes and stores the data measured by the measuring instrument and sends it to the host computer in real time, and if necessary, the operation status and calibration of various measuring instruments can be performed by remote control of the main computer. Say the device can.

The data logger according to the present invention generates 5 minutes data and 30 minutes data as measurement data.

In addition, the data logger of the data logger according to the present invention can collect the measured value from the measuring device at least once per second. (However, if the data transmission interval of the measuring instrument is longer than this, the previous collected value is continued.)

In addition, since the data logger of the data logger according to the present invention influences the reliability and the degree of measurement of the data, there are remote diagnostics, the state output function of the measuring device, and the data collector.

In addition, the data logger according to the present invention has a storage function capable of storing the data for 30 minutes or more with the state of the instrument for 30 minutes. (If necessary, there is a function of generating and transmitting data for 3 ~ 10 seconds / 1 minutes.)

In addition, the program of the data logger according to the present invention can be changed remotely using a nonvolatile memory.

In addition, the data logger data transmission method according to the present invention supports all LAN, wireless, dedicated line (RS-232C).

In addition, in order to prevent any change, such as the configuration of the data logger according to the present invention, there is a function that can assign a user-specific password and restrict the use rights, such operation is possible only for a specific person designated by the control center.

In addition, in order to prevent any alteration of the measurement data of the data logger according to the present invention, a security code is automatically assigned for each measurement data and used to check whether the data is tampered with later.

In addition, it supports an automatic reboot function using a watch dog timer when an error occurs in the data logger data collection device according to the present invention.

In addition, the error and status of the data logger data collection device according to the present invention is stored as log data.

In addition, according to the transmission method (LAN, wireless, leased line) in the data logger data transmission according to the present invention communicate with each unique protocol.

In addition, the data logger according to the present invention can manage the status check and operating environment even at a remote location.

In addition, the data logger data collection device according to the present invention transmits the data every 30 minutes, and if there is a transmission error by transmitting to another data transmission method so that there is no problem in real-time control.

In addition, the data logger according to the present invention immediately transmits the data when the warning, alarm situation corresponding to the emission allowance criteria.

The data logger according to the present invention also has an auto dump function (2 hours).

In addition, to support the console port for the program patch, setting value change and log file check of the data logger data collection device according to the present invention can be modified at the remote location.

In the data state of the data logger according to the present invention, the state under repair is set in the data collection device.

In addition, the data logger according to the present invention can transmit data to the server of the control center through the VPN (Virtual Private Network) device in the TCP / IP communication.

In addition, the data logger according to the present invention uses the RS-232C (DB-9) as the interface of the data collector and the intermediate data collector for wireless communication and dedicated line communication.

In addition, the data logger program according to the present invention should be stored and operated in a ROM, and is performed by replacing the ROM when upgrading.

In addition, the data logger according to the present invention is impossible to edit the user by encrypting and storing the constant (coefficient) information for configuration.

In addition, when the constant (coefficient) value of the data logger data collection device according to the present invention is changed, the final constant value is automatically transmitted to the control center at the time of applying the changed value (storage), and the transmission is not possible due to communication problems. If it is impossible, it automatically transmits old untransmitted data within 3 days at the beginning of transmission.

In addition, the data logger according to the present invention does not perform the conversion and correction for the corresponding item when a non-normal status indication such as the calibration of the measurement item occurs.

In the data logger according to the present invention, the method for calculating a search value at the time of a remote search is an average value of the last 10 seconds of the search time for each of Zero and Span search.

5 minutes (average) data collection method of the data logger according to the present invention is as follows. Based on the data collected by each meter, 12 five-minute data are generated every five minutes from '00 minutes 'to '55 minutes'. It is judged to be effective when we have. If the normal data does not exceed 80%, the highest state is added according to the priority of the state.

<Time range of 5 min (average) data>

△△ Hour 00 minutes 00 seconds ≤ △△ Hour 00 minutes-5 minutes (average) Data <△△ Hour 05 minutes 00 seconds

In addition, 30 minutes (average) data collection method of the data logger according to the present invention is as follows. The state of the 5 minute data is the average of only the normal data. It generates two 30-minute (average) data of '00 minutes 'and '30 minutes' per hour, and is judged to be valid when more than five out of six five-minute data are in a normal state. If there are four or less valid five-minute average data, the status is assigned according to the status priority.

<Time range of 30 min (average) data>

△△ hour 00 minutes 00 seconds ≤ △△ hour 00 minutes-30 minutes (average) data ≤ △△ hour 25 minutes-5 minutes (average) data

Next, the state type and priority of the data logger according to the present invention are as follows. The statuses are under maintenance> power off> malfunction> during calibration> normal. Priority is given according to the inequality sign, and the status except for maintenance and normal receives a signal from the measuring instrument. 1A to 1D are exemplary diagrams of 5 minutes (average) data collection, respectively, and show cases 1, 2, 3, and 4, respectively. If the state is abnormal and there is more than one state, the state is set according to the priority, not the last state in time.

Next, the state type and attachment method of the data logger according to the present invention are as follows. In case of abnormality (Scanning Hit Rate less than 80%), if the measured value inputted by each measurement item of the data collection device is AI signal, the state judgment is performed by scanning AI current value by measurement item periodically (1 second interval) and over 80%. If it is within 4 to 20 ms, the status is set to "normal", and if it is less than 4 ms, it is set to "abnormal." 2A and 2B are diagrams for explaining types of states, and show cases of "normal" and "abnormal", respectively.

Next, in case of power disconnection, it shall be attached when unsent data transmission after power recovery of data collection device. At this time, the state of the meter should also reflect the power disconnection.

Next, the data transmission / reception form of the data logger according to the present invention is as follows. As shown in Fig. 3, the basic format is a common part of the text, which is a region code (format: 2 integers, contents: control center jurisdiction serial number / 01 to 99), and a discharge company code (format: 4 integers, content: Business site (distributor) serial number / 0001 to 9999), chimney number (format: 3 digits, content: chimney number by business site / 001 to 999), dcd {type: 1 letter, content: main computer and data collection device Communication method and line status, 0 (good), 1 (bad main line), 2 (bad internal line (between data logger and FEP)), 3 (bad both main line and internal line)}, number of measurement items 2 digits, content: total number of metrics), date and time (format: 12 characters, content: measurement date and time / YYYYMMDDhhmm, e.g. 200001010005), metric {format: 3 characters, content: TSP ( Dust), NOX (nitrogen compounds), SO2 (sulfur oxide), HCL (hydrogen chloride), NH3 (ammonia), COb (carbon monoxide), HFb (hydrogen fluoride), TM1-TM3 (incinerator furnace temperature), FLW ( Exhaust gas flow), TMP (temperature), O2b (oxygen), FFL (liquid flow), ALL (all measurements)}, measurement {format: 7 digits (including decimal points), content: measured or reference value for each item /xxxx.xx (changes decimal point, rounds to below decimal point)}, meter status {format: 1 character, content: meter status display, 0 (normal), 1 (calibrating), 2 (bad operation), 4 ( Power off), 8 (under maintenance)}, data logger status {type: 1 character, content: display status of data collection of the instrument, 0 (normal), 1 (abnormal), 4 (power off)}, security code (Format: 12 digits, content: a confirmation character to prevent tampering of the measurement data).

Next, the type of output data of the discharge establishment of the data logger according to the present invention is shown in FIG. 4 and the measurement data shown in FIG. 5. As shown in the figure, Frame-ID (format: 3 digits, content: unique ID type / 001 to 999 per data frame), Report-ID (format: 4 letters, content: output data type / RPT0, One of RPT1 and DUMF).

Next, as shown in Fig. 6, the data logger setting data of the data logger according to the present invention is frame-ID (format: 3 digits, content: unique ID type per data frame / 001 to 999), Report-ID (format: 4 characters, content: output data type / CNST), number of items (format: 2 digits, content: number of metrics attached to the data logger), minimum range of measurement (format: 7 digits, Description: There is the minimum value of the measurable range of the current state of the measurement item, the maximum measurement range (format: 7 digits, content: the maximum value of the measurable range of the current state of the measurement item).

Next, the type of the remote control command (Remote control) of the data logger according to the present invention is shown in FIG. As shown in the figure, command (format: 4 characters, content: remote control command type / DUMP, RCHK, CCHK, SETT, REST, SETP), date (content: remote command command date and time, but new at SETP time) 6 digit password).

Next, the data manual transmission command of the data logger according to the present invention includes a command (format: 4 characters, content: remote control command type / DUMP), start / end date and time (content: data transmission target). Temporal range setting).

Next, the transmission / reception signal of the data logger according to the present invention is as shown in FIG. 10. As a transmission / reception procedure when using a dedicated line, the transmission / reception method can be retransmitted up to five times when a data check error occurs. When the sender sends a start signal, the receiver sends an ACK signal to the sender after preparing to receive the data, and after receiving the ACK signal from the sender after the last data transmission, the sender finishes the transmission to the EOT and responds after 10 seconds have passed. If there is no error, repeat the transmission up to 5 times. If the transmission time is less than 2 minutes from the start of the EOT, if it is delayed further, process it with time-out, and Buffer Overflow (when 80% or more of the corresponding channel buffers are used) will turn off X-OFF. If X-ON is transmitted when time passes and the buffer reaches about 60%, the sender starts again from the standby after sending the first ENQ and collects the remaining data. Even if the computer is in the overload state due to the slowdown in processing, HALT (H / W obstacle or discharge company failure when the main computer can not receive the data), unresponsive (dcd drop In case of delayed communication), wait 5 seconds for each step and process as time-out if delayed more than 5 minutes and 30 minutes data generated by the data collection device after 2 hours are ignored. It should be retransmitted to the main computer after being temporarily stored in the data collection device, and will be automatically transmitted at the 5 and 30 minute average data transmission times that first arrive after circuit recovery even after DCD DROP during both communication failures. After 2 hours, the master computer collects and processes the data lost due to the manual transmission request for 5 and 30 minute average data, and completes the transmission after TCP / IP communication. Quit.

Next, as a basic transmission / reception procedure when using the dedicated line of the data logger according to the present invention, data of the discharge office is shown in FIG. 11, and a remote control command of the main computer is shown in FIG. As an exceptional execution procedure, a transmission error occurs as shown in FIG. 13, a buffer of the main computer as shown in FIG. 14, and a priority control as shown in FIG. As shown in Fig. 16, the communication matrix table transmits ENQ in the case of Data Logger and transmits and waits for ACK when receiving the ENQ transmitted from the other party during waiting (contention control). Delete from the queue. After sending and receiving text, the validity of the relevant text is determined. The receiving side receives and records the corresponding text and sends an ACK. This text is valid regardless of whether EOT is generated from the other side. The sender deletes the data from the send queue after receiving an ACK for the text transmission. The method of reading the communication matrix table of Fig. 16 is as follows. Communication Matrix Table consists of state and event, and state indicates its own state after sending / receiving operation, and event shows occurrence event from counterpart in each stage state. → indicates returning to the next step after response control occurs in response to an event from the other party. FIG. 17 is a diagram showing a case of normal processing, and FIG. 18 is a diagram showing a case of X-ON / OFF processing. At this time, the Retry can be performed up to 5 times only when the "wait after ENQ transmission" state and "validation error" occur for the communication connection with the other party. If there is data to be sent when X-ON occurs after X-OFF, the operation starts again from "Wait after ENQ transmission".

Next, as a transmission / reception procedure when using a LAN of a data logger according to the present invention, a transmission / reception method is as follows. When data checksum error occurs, it can be retransmitted up to 5 times, and if there is no response after 10 seconds of transmission, it is repeatedly transmitted up to 5 times, and the transmission side receives the ACK signal after the last data transmission. After finishing, Buffer Overflow (when 80% or more of the corresponding channel buffer is written) transmits X-OFF, and when X-ON is transmitted when the buffer reaches about 60% after the elapse of time, the sender starts transmitting data again. Collect data, process as above even when the main computer is in overload due to the slowdown of processing speed, and HALT (H / W or discharge company failure when the main computer can not receive the data at all) Even if there is no response (communication status due to TCP / IP disconnection), it waits for 10 seconds and processes as time-out if it is delayed longer. 5 minutes and 30 minutes of data must be temporarily stored in the data collection device for up to 2 hours, and then retransmitted to the host computer. 5 minutes after the temporary communication is suspended even after TCP / IP disconnection, It is automatically dumped at the 30-minute average data transfer time, and after 2 hours, the master computer collects and processes the data lost due to the manual transfer request for the 5-minute and 1-hour average data.

Next, as a basic execution procedure when using a LAN of the data logger according to the present invention, the data transmission procedure of the discharge establishment is as shown in Figure 19a and 19b. As an exceptional execution procedure, a procedure when a transmission error occurs is as shown in FIG. 20, a procedure when the buffer of the host computer is saturated as shown in FIG. 21, and a procedure when no response occurs as shown in FIG.

Next, the calculation method of the data verification byte of the data logger according to the present invention is as follows. It is determined by the sum of each byte of the record of transmission data. It adopts the lowest 1 byte (hexadecimal) and separates it into the upper 4 bits and the lower 4 bits, and adds 30h value and character codes (2 bytes).

How to make a checksum

unsigned char MakecheckSum (char * Data, int len)

｛

int i;

unsigned char a;

a = 0;

for (i = 0; i <len; i ++)

a = (char) ((a + * (Data + i))

return a;

｝

To send checksum, divide it into 2 bytes. (This is the same as when creating the instrument and data logger state)

chk1 = (checksum & 0xF0) >> 4

if (chk1 <10) chk1 = chk1 + 0x30

else chk1 = chk1 + 0x37

chk2 = (checksum & 0x0F) >> 0

if (chk2 <10) chk2 = chk2 + 0x30

else chk2 = chk2 + 0x37

Send chk1 and chk2.

Figure 23 is an illustration of a method of making a checksum. The checksum is verified in the reverse order above.

Next, FIGS. 24A and 24B are diagrams illustrating a system operation menu, and various setting values may be set using a function button so that the data collector of the data logger according to the present invention can perform a function smoothly. Function setting is possible to set up measuring station related (measuring station code, chimney number, control station IP, communication setting), measuring instrument related (item code, reference value, measuring channel), operation related (operating screen designation, status setting under maintenance).

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the technical field of the present invention without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, according to the present invention, there is an effect of providing an Internet data logger in the chimney remote monitoring system (TELE-MONITORING SYSTEM, TMS).

Claims (14)

Collect, analyze, and save the data measured by the measuring device to the main computer in real time, and if necessary, it is possible to operate and calibrate various measuring devices by remote control of the main computer, and in the chimney remote monitoring system that can collect the measurement data. In the Internet data logger system, 5 minutes and 30 minutes of data can be generated as measurement data, and the measured value can be collected from the measuring device at least once per second (but if the data sending interval of the measuring device is longer than this, the previous collected value is continued). In addition, since the reliability of the data and the degree of measurement are determined, there are remote diagnostics, a status output function of a measuring instrument and a data collecting device, and a storage function for storing the 30 minutes data with the state of the measuring instrument for 15 days or more (3 if necessary). ~ 10 sec / 1 min data data generation / transmission function, program change can be done remotely using non-volatile memory, support all LAN, wireless, leased line (RS-232C) method, arbitrary configuration, etc. In order to prevent the change, there is a function to assign a user-specific password and restrict the use authority. Such operation is possible only for a specific person designated by the control center, In order to prevent the change of data, the security code is automatically assigned to each measurement data and the security code to check whether the data is tampered with afterwards is supported.In case of an error of the data collection device, it supports the automatic rebooting function using the watch dog timer. It stores the error and status of the device as log data, and communicates with each unique protocol according to the transmission method (LAN, wireless, leased line) when transmitting the data, and can check the status and manage the operating environment even from a remote location. The collection device transmits data every 30 minutes, and if there is a transmission error, it transmits it to another data transmission method so that there is no problem in real-time control, and immediately sends data in case of warning and alarm situation corresponding to emission allowance standard, and auto dump function ( 2 hours) and supports console port for patching program, changing configuration value and checking log file At the same time, modification and change can be made at a remote location. During maintenance, the status under maintenance is set in the data collecting device, and in TCP / IP communication, the data collecting device transmits the data to the server of the control center through the VPN (Virtual Private Network) device. RS-232C (DB-9) interface is used for data collection device and intermediate data collector interface for wireless communication and dedicated line communication, and program should be stored and operated in ROM. It is executed by the method, and the constant (coefficient) information for environment setting is encrypted and stored, so that the user's arbitrary editing is impossible, and when changing the constant (coefficient) value, the final constant value at the time of applying the changed value (save) Is automatically transmitted to the control center, and if the transmission is impossible due to communication problems, the old untransmitted data within 3 days at the beginning of the transmission In case of abnormal status display such as calibration of measurement items, the relevant items are not converted and corrected, and the calculation method of remote search is zero and span search. 10 second average Internet data logger system. The method of claim 1, This is a 5 minute (average) data collection method of the data logger, which generates 12 5 minute data in 5 minute increments of '00 minute 'to '55 minute' per hour based on the data collected by each meter. If more than 80% of the data has a normal status indication (status), it is considered valid.If the normal data does not exceed 80%, the highest status is added according to the priority of the status. Internet data logger system. The method of claim 1, This is a 30-minute (average) data collection method of data logger, which is the average of only normal data among 5-minute data, and generates two 30-minute (average) data of '00 minutes 'and '30 minutes' per hour. If more than 5 out of 6 5 minute data have normal status, it is considered valid.If there are 4 or less valid 5 minute average data, the status is assigned according to the priority of status. Internet data logger system. The method of claim 1, The status of the data logger has five priorities: under maintenance> power off> malfunction> during calibration> normal, giving priority to the inequality sign. Is abnormal and one or more states occur, the state is set according to the priority rather than the last occurrence in time. Internet data logger system. The method of claim 1, In case of abnormality (Scanning Hit Rate less than 80%), if the measured value inputted by each measurement item of the data collection device is AI signal, the state judgment is performed by scanning AI current value by measurement item periodically (1 second interval) and over 80%. If it is within 4 ~ 20 ㎃, set the status to “Normal” and if it is less than 4㎃, set it to “Normal”. If the power is disconnected, attach it when transmitting the unsent data after recovering the power of the data collection device. State diagram reflects power disconnection Internet data logger system. The method of claim 1, The basic format of data logger data transmission and reception is the common part of the text, which includes a region code (format: 2 integers, contents: control center jurisdiction serial number / 01 to 99), and a discharge company code (format: 4 integers, content: workplace ( Distributor) Serial number / 0001 to 9999), chimney number (type: 3 digits, content: chimney number by site / 001 to 999), dcd {type: 1 character, content: communication between main computer and data collection device Method and line status, 0 (good), 1 (bad main line), 2 (bad internal line (between data logger and FEP)), 3 (bad both main line and internal line)}, number of measurement items (format: number 2 Digits, content: total number of metrics), date and time (format: 12 digits, content: date and time of measurement / YYYYMMDDhhmm, e.g. 200001010005), metric {format: 3 digits, content: TSP (dust), NOX (nitrogen compound), SO2 (sulfur oxide), HCL (hydrogen chloride), NH3 (ammonia), COb (carbon monoxide), HFb (hydrogen fluoride), TM1-TM3 (incinerator furnace temperature), FLW (Exhaust Gas Flow), TMP (Temperature), O2b (Oxygen), FFL (Liquid Flow), ALL (All Measurements)}, Measurements {Format: 7 Digits (including Decimal Points), Content: Measurements by Item or Reference value / xxxx.xx (changes decimal point, rounds to below decimal point)}, meter status {format: 1 character, content: status of meter, 0 (normal), 1 (calibration), 2 (fault), 4 (power off), 8 (under repair)}, data logger status {type: 1 character, content: display status of data collection of the instrument, 0 (normal), 1 (abnormal), 4 (power off)}, Security code (format: 12 digits, content: confirmation character to prevent tampering of measurement data) Internet data logger system. The method of claim 1, The type of output data of the data logger's outlet is Frame-ID (format: 3 digits, content: unique ID type per data frame / 001 to 999), Report-ID (format: 4 characters, content: output data). Type / RPT0, RPT1, DUMF) Internet data logger system. The method of claim 1, Data logger's constant (count) setting data is Frame-ID (format: 3 digits, content: unique ID type / 001 to 999 per data frame), Report-ID (format: 4 characters, content: output data) Type / CNST), number of items (format: 2 digits, content: number of metrics attached to data logger), minimum range of measurement (format: 7 digits, content: minimum value of measurable range of current state of metric ), The maximum measurement range (format: 7 digits, content: the maximum value of the measurable range of the metric's current state) Internet data logger system. The method of claim 1, Remote control command of data logger is command (format: 4 characters, content: remote control command type / DUMP, RCHK, CCHK, SETT, REST, SETP), date (content: remote command command date and time. However, 6-digit new password at SETP) Internet data logger system. The method of claim 1, The data manual transmission command of the data logger is a command (format: 4 characters, content: remote control command type / DUMP), start / end date and time (content: setting the time range of the data transmission target) Internet data logger system. The method of claim 1, When using data logger's dedicated line, the transmission / reception method can be retransmitted up to 5 times when data check error occurs.If the sending side sends a transmission start signal, the receiving side sends an ACK signal to the transmitting side after preparing to receive the data. After receiving the ACK signal from the receiver after the last data transmission, the transmission ends the transmission to the EOT, and if there is no response after 10 seconds of transmission, the transmission is repeated up to 5 times and the time from the transmission start to the EOT is within 2 minutes. If it delays further, it processes by time-out and Buffer Overflow (when 80% or more of the channel buffer is written) sends X-OFF and sends X-ON when the buffer reaches about 60% after time. Then, the sender collects the remaining data by restarting from the standby after the first ENQ transmission. After the above process, HALT (H / W or discharge company failure in which the main computer can not receive the data at all) and 5 seconds for each step even if it is unresponsive (inability to communicate by dcd drop) If it is delayed, process it by time-out, and after 5-hour and 30-minute data generated by the data collection device is ignored after transmission by time-out, it should be temporarily stored in the data collection device for 2 hours and then re-transmitted to the main computer. In case of DCD DROP of both sides of communication failure, it is automatically dumped after 5 minute and 30 minutes of average data transmission time after the temporary communication hold and after line recovery. Collect and process the lost data by requesting manual transmission for minute average data, terminate the connection after completing the transmission in TCP / IP communication, and the communication matrix table sends ENQ in the case of Data Logger and waits. When receiving the ENQ sent from the other side, the ACK is sent and waited (contention control). When error processing, the corresponding message is deleted from the sending queue, and after the text transmission and reception, the validity of the corresponding message is determined. After receiving and recording, the ACK is transmitted, and this text is valid regardless of whether EOT is generated from the other party.The sending party deletes data from the transmission queue after receiving the ACK for text transmission.How to read the communication matrix table Communication Matrix Table consists of state and event. State indicates its own state after sending / receiving operation, Event indicates occurrence event from counterpart in each step state. → Table shows response control occurrence corresponding to event from other party. Retry indicates the return to the next level, and Retry is only available when the "ENQ send and wait" state and the "validation error" occur for the communication connection with the other party. Up to 5 times is available. If there is data to be sent when X-ON occurs after X-OFF, restart from `` Wait after ENQ transmission ''. Internet data logger system. The method of claim 1, Transmitting / receiving procedure when using data logger's LAN.Retransmission is possible up to 5 times when data check error occurs.If there is no response after 10 seconds have elapsed, it transmits repeatedly up to 5 times. After the ACK signal is received, the transmission is completed and Buffer Overflow (when 80% or more of the corresponding channel buffer is written) transmits X-OFF. When time passes, X-ON is sent when the buffer reaches 60%. The sender starts data transmission again, collects the remaining data, and processes it as above even when the host computer is in overload due to the slowdown of processing speed, and HALT (H when the host computer cannot receive the data at all). 10 seconds, even in the case of normal or unsatisfactory outlets) or unresponsiveness (communication status due to TCP / IP disconnection), wait for 10 seconds and process as time-out and transfer to time-out. After the transmission is ignored, the 5 and 30 minute data generated by the data collection device should be temporarily stored in the data collection device for up to 2 hours and then retransmitted to the host computer. After the circuit recovery, the data is automatically dumped at the first 5 and 30 minute average data transfer times, and after 2 hours, data is lost from the host computer due to a manual transfer request for the 5 minute and 1 hour average data. Collection processing Internet data logger system. The method of claim 1, Data Calculation Method of Data Logger Byte, which is determined by the sum of each byte of Record of transmission data, adopts the lowest 1 byte (hexadecimal) and separates it into upper 4bit and lower 4bit, and adds 30h value to each character encoding (2byte) Divided into 2 bytes to send checksum. Internet data logger system. The method of claim 1, Measurement station related (meter code, chimney number, control station IP, communication setting), measuring device related (item code, reference value, measuring channel), operation related (operating screen designation, repairing) Status setting) function setting is possible Internet data logger system.

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