KR100466042B1 - Apparatus and Method for controlling reset of wireless automatic remote using mobile communication network - Google Patents

Abstract

According to the present invention, when the remote metering center commands a remote reset periodically or when a preset reset cycle is performed in the nonvolatile memory inside the terminal, the output power of the power backup unit and the power supply unit can be restored after a predetermined time period. The present invention relates to a wireless remote reset control method using a mobile communication network and a device for initializing a memory and a driving program as well as a semiconductor device to eliminate all causes of malfunction. The present invention relates to a terminal or a meter. If the remote meter reading server requests a call connection with the terminal when the wireless modem malfunctions, the terminal sends a response to the call connection request to the remote metering server to set up a call.After the call is established, the remote metering server authenticates the terminal. The terminal requests a response to the requested authentication. If a reset request is sent from the remote meter reading server to the terminal after receiving the authentication response, the terminal receiving the reset sends a response to the reset request to the remote meter reading server, and the terminal sends a response to the reset request. After transmitting, it requests disconnection from the remote metering server, and then resets the power through the internal microprocessor.

Description

Apparatus and Method for controlling reset of wireless automatic remote using mobile communication network

The present invention relates to a wireless remote reset control using a mobile communication network, and more particularly, by remotely intermittent power to terminals and wireless modems installed in various areas without visiting the facility site, after reset The present invention relates to a wireless remote reset control method and apparatus using a mobile communication network to solve the cause of malfunction or inoperation, thereby allowing the terminal and the wireless modem to operate normally so as to extend the life of the product and improve the efficiency of the operation.

In general, as a method of reading a meter (electronic meter, gas meter, water meter, integrated calorimeter, etc.), a remote metering method that collects information such as direct meter reading by a meter reader and usage amount stored in the meter remotely when necessary. There is this.

Among these, direct meter reading by the meter reader may be unreliable, a large amount of manpower required for meter reading is required, and a lot of advance work is required to prepare a bill to be sent to the customer, which is inefficient and inefficient. In addition, it is difficult to maintain because it is possible only if a person checks the status of a meter failure.

The remote metering method has been proposed to solve various problems occurring in the direct metering method.

The remote metering method has matched the wireless remote metering control device to commercialize the remote metering, and is gradually expanding the service area of the remote metering service to home electric meter, gas meter, water meter, and total calorimeter.

1 is a system configuration diagram for remote meter reading using a general mobile communication network and a wireless communication network.

As shown in the drawing, the terminal 5 matches with various meters 6 and collects meter reading information periodically or aperiodically by RS-232 or RS-485 serial communication. Periodically collected meter reading information is transmitted to the mobile communication network (3) via the meter-side wireless modem (4). Here, the terminal 5 extracts Internet protocol (IP) and port information of the remote metering server 7 previously stored in the internal nonvolatile memory, and together with the extracted information and metering information, the wireless modem on the meter side (4) to pass. The meter reading information transmitted to the mobile communication network 3 is transmitted to the data processing system 1 via the data service network 2 and processed by the data processing system 1 and then remotely read using TCP / IP. It is delivered to the server 7. In the above, the mobile communication network 3 can be replaced by a wireless communication network.

In addition, when the meter information is to be acquired in a non-periodic real time, the communication control device 8 uses the mobile communication network 3 in a mobile-to-mobile communication method, and the meter-side wireless modem 4 and the terminal 5 Transmit control information necessary for meter reading. Using this control information, the terminal 5 collects meter reading information by performing serial communication with the meter 6, and transmits the collected meter reading information to the remote meter reading server 7 in real time at an operator's desired time. Do it. The process of transmitting the aperiodic information acquired periodically to the remote meter reading server 7 in which the operator is located is transmitted to the remote meter reading server 7 via the server-side wireless modem 9 and the communication control device 8. .

When the terminal 5 and the meter-side wireless modem 4 malfunction in the wireless remote meter reading system that performs this function, the manager can be remotely reset from the remote site without visiting the facility site scattered in various areas. ) And the meter-side radio modem 4 need to be reset and initialized.

2 is a block diagram of a control device for performing a remote reset function in a terminal and a wireless modem connected to a conventional mobile communication network (or a wireless communication network).

As shown in the drawing, when the terminal 5 and the meter-side wireless modem 4 malfunction, the mobile communication network (8) is used by using the communication control device (8) to remotely reset the two devices in the remote meter reading server (7). 3) And connect the meter-side wireless modem (4) and mobile to mobile (M to M) call. Then, when the remote metering command (7) transmits a remote reset command, the transmitted remote reset command passes through the communication control device (8), the server side radio modem (9), and the mobile communication network (3). The modem 4 transmits the remote reset signal to the microprocessor 10 of the terminal 5. Upon receiving the remote reset signal, the microprocessor 10 performs a control operation to reboot all the memory 13 and the driving program in the terminal. At this time, the wireless modem 4 in the meter side also stores all the memory and the driving program in the terminal. It will reboot.

In this case, when the terminal 5 and the meter-side wireless modem 4 malfunction or do not operate, the remote metering server 7 transmits a remote reset control command to the terminal 5 to perform a remote reset. to be.

Alternatively, when a reset is set at a predetermined period in the nonvolatile memory 13 of the terminal 5 or the meter-side wireless modem 4, the microprocessor 10 or the meter of the terminal 5 is automatically set at the set period. The wireless modem 4 transmits a reset signal, respectively, so that the nonvolatile memory 13 and the driving program are rebooted.

3 is a configuration diagram of an embodiment of the power supply unit 15 of FIG. 2.

As shown therein, the input filter and rectifying unit 15a filters and rectifies the input AC power and converts the DC power into a DC power, and the converted DC power is converted into a set voltage level through the coil 15c. The output filter and the rectifying unit 15d filter and rectify the DC voltage through the coil 15C, and the power output unit 15e finally receives the filtered and rectified DC voltage from the microprocessor 10 and the power supply. It is supplied to the backup unit 14, the nonvolatile memory 13, and the like.

However, in the conventional remote meter reading system, the remote reset method is a method of rebooting a memory and a driving program under the control of a microprocessor, and thus, the output power of the power backup unit or the power supply unit is not interrupted. Therefore, when an error occurs or does not operate in the entire system due to a malfunction of the semiconductor device, a problem cannot be completely solved.

In other words, when the terminal or the meter-side wireless modem malfunctions or does not operate due to a malfunction of the semiconductor device in the microprocessor, the cause of the malfunction may not be substantially eliminated even when the memory and the driving program are initialized. Therefore, even if the memory and the driving program are initialized, the whole system may malfunction or not operate.

Accordingly, the present invention has been proposed in order to solve various problems derived from an incomplete reset method upon remote reset in the conventional wireless remote meter reading system as described above.

It is an object of the present invention, when the remote meter reading command a remote reset in a non-periodic period or a predetermined reset cycle in the non-volatile memory inside the terminal can be recovered after a certain time of interrupting the output power of the power backup unit and the power supply unit The present invention provides a method and apparatus for wireless remote reset control using a mobile communication network which can initialize not only a memory and a driving program but also a semiconductor device so that all causes of malfunction can be eliminated.

The "wireless remote reset control device using a mobile communication network" according to the present invention for achieving the above object,

In a conventional wireless remote meter reading system consisting of a remote meter server, a communication control device, a server-side wireless modem, a mobile communication network (or a wireless communication network), a meter-side wireless modem, a terminal, a meter,

The terminal,

A microprocessor which generates a reset control signal when a remote reset command transmitted from the remote meter reading server is transmitted or when a preset reset period is reached in a nonvolatile memory;

A reset control unit generating a power control signal in response to a reset control signal generated from the microprocessor;

The power supply unit and the power backup block the output power supplied to the microprocessor for a predetermined time in response to the power control signal generated by the reset control unit to initialize all the internal memory, the driving program, and the semiconductor device of the microprocessor. Wealth;

A serial communication port connected to the microprocessor to interface data with a meter;

Characterized in that it comprises a status display unit for displaying the status of the terminal.

In the above, the power supply unit,

An input filter and rectifier for filtering and rectifying the input AC power into a DC power;

A coil for converting the DC power converted by the input filter and rectifier to an appropriate level in response to the control of the stabilization unit;

An output filter and rectifier for filtering and rectifying the DC power supply via the coil;

A power output unit for supplying power output from the output filter and rectifier unit to each part of the meter-side wireless modem and the terminal;

When the power control signal is transmitted from the reset control unit is characterized in that the power controller for shutting off the power output from the power output unit for a predetermined time obtained by the output timer.

The "wireless remote reset control method using a mobile communication network" according to the present invention for achieving the above object,

In the remote reset control method in a conventional wireless remote meter reading system consisting of a remote meter server, a communication control device, a server-side wireless modem, a mobile communication network (or a wireless communication network), a meter-side wireless modem, a terminal, a meter,

Requesting a call connection with a terminal through the communication control device and a server-side wireless modem at the remote meter reading server when the terminal or the meter-side wireless modem malfunctions;

Setting up a call by transmitting a response to a call connection request from the terminal to the remote meter reading server through the meter-side wireless modem;

If the remote meter reading server requests authentication from the terminal after the call is set up, transmitting a response to the requested authentication from the terminal to the remote meter reading server;

When the remote meter reading server receiving the authentication response generates a reset request from the remote meter reading server to the terminal, transmitting the response to the remote meter reading server to the remote meter reading server;

And transmitting a response to the reset request from the terminal, requesting disconnection to the remote meter reading server, and performing a reset operation through power interruption of the internal microprocessor.

1 is a block diagram showing the configuration of a wireless remote meter reading system using a data service network of a general mobile communication network (or wireless communication network),

2 is a block diagram of a control device for performing a remote reset function in a terminal and a wireless modem connected to a conventional mobile communication network (or a wireless communication network).

3 is a configuration diagram of an embodiment of the power supply unit of FIG.

4 is a block diagram of a control device for remotely resetting a terminal and a wireless modem using a mobile communication network according to the present invention;

5 is a configuration diagram of an embodiment of a power supply unit for power interruption of FIG. 4,

6 is a flowchart illustrating a wireless remote reset control process using a mobile communication network according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10 ..... Microprocessor

16 ..... Reset Control

17 ..... Power supply

17a ..... Input filter and rectifier

17d ..... Output filter and rectifier

17e ..... output timer

17f ..... power controller

17g ..... power output

50 ..... terminal

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention according to the technical spirit as described above.

4 is a block diagram of a control device for remotely resetting a terminal and a wireless modem using a mobile communication network according to the present invention.

As shown in the drawing, when the terminal 50 and the meter-side wireless modem 4 malfunction, the mobile communication network 8 uses the communication control device 8 to remotely reset the two devices in the remote meter reading server 7. 3) And connect the meter-side wireless modem (4) and mobile to mobile (M to M) call.

Then, when the remote metering command (7) transmits a remote reset command, the transmitted remote reset command is transmitted to the meter-side radio after passing through the communication control device (8), the server-side radio modem (9), and the mobile communication network (3). The modem 4 transmits the remote reset signal to the microprocessor 10 of the terminal 50.

Upon receiving the remote reset signal, the microprocessor 10 transmits a reset control signal to the reset controller 16 through a serial port or a reset port.

The reset control unit 16 receiving the reset control signal generates a power control signal to the power supply unit 17 and the power backup unit 14, and by this operation, the power supply unit 17 and the power backup unit 14. The power cuts off the power supplied to the microprocessor 10 for a predetermined time.

Then, after a certain time elapses, the microprocessor 10 is supplied with power again. The microprocessor 10 which has been repowered is automatically initialized with an internal semiconductor device, and then the memory and the driving program are rebooted. At this time, the meter-side wireless modem 4 is also powered off for a predetermined time, so that the semiconductor device is initialized and all internal memory and driving programs are rebooted.

As a result, it is impossible to reset a semiconductor device malfunctioning during a remote reset as in the past, and thus it is possible to prevent the terminal and the meter-side wireless modem from malfunctioning even after the remote reset.

In this case, when the terminal 50 and the meter-side wireless modem 4 malfunction or do not operate, the remote metering server 7 transmits a remote reset control command to the terminal 50 to perform a remote reset. to be.

Alternatively, when the reset is set in the nonvolatile memory 13 of the terminal 50 or the meter-side wireless modem 4 at regular intervals, the microprocessor 10 of the terminal 50 is automatically reset at the set period. The signal is transmitted to the power supply unit 17 and the power backup unit 14 so that the semiconductor device is initialized and the memory and the driving program are rebooted.

FIG. 5 is a configuration diagram showing an embodiment of the power supply unit 17 intermittent the DC power by the power control signal in the present invention.

As shown therein, the AC power input from the input filter and rectifier 17a is filtered and rectified and converted into a DC power. The converted DC voltage passes through the coil 17c and then the output filter and rectifier 17d. After filtering and rectifying once again in the), it is supplied to the microprocessor 10 and the power backup unit 14 through the power output unit 17g.

In this state, when the power control signal output from the reset controller 16 is applied, the power controller 17f controls the power output unit 17g for a predetermined time set by the output timer 17e to output the current. Make sure that the DC power you are disconnecting. That is, the power currently supplied to the microprocessor 10 is cut off. At this time, the power backup unit 14 also acts in the same way as the power supply unit 17 to cut off the power supplied to the microprocessor 10.

6 shows a flowchart of remotely resetting the terminal in the remote meter reading server according to the present invention. Where S stands for Step.

As shown therein, when the remote meter reading server 7 attempts to remotely reset the terminal 50, the communication control device 8, the server-side wireless modem 9 and the mobile communication network 3 as in step S1. A call connection request is made to the meter 50 wireless modem (PCS, Cellular, GSM, Pager, RF) 4 and the terminal 50 through the terminal. Then, in step S2, the terminal 50 and the meter-side wireless modem 4 transmit a connection response signal to the remote meter reading server 7, thereby establishing a mobile-to-mobile call.

After the call is set up, if the remote meter reading server 7 requests the authentication request from the terminal 50 as in step S3, the terminal 50 responds to the remote meter reading server 7 in step S4.

When the remote meter reading server 7 receiving the authentication response transmits the reset request signal to the terminal 50 in step S5, the terminal 50 receiving the authentication response sends a reset response signal to the remote meter reading server 7 in step S6. In step S7, the connection request to the remote meter reading server 7 is requested.

Thereafter, the terminal 50 performs a reset operation in step S8.

That is, the meter task in the terminal 50 performs an internal operation, notifies the DS (Data Service) task of the reset request, and transmits a remote reset signal to the microprocessor 10 through the serial port or the reset port. After receiving the reset signal, the microprocessor 10 analyzes the data and signals received through the serial port or the reset port and transmits the reset signal to the reset controller 16 using the corresponding reset port of the SFR (Special Function Register). do. Upon receiving the reset signal, the reset control unit 16 simultaneously transmits a power control signal to the power supply unit 17 and the power backup unit 14 to cut off the power supplied to the terminal 50. The power supply unit 17 and the power backup unit 14 receiving the power control signal cut off the power for a predetermined time and recover the power.

When the power is cut off and then restored, all the semiconductor devices of the terminal 50 and the meter-side wireless modem 4 are initialized, and thus all memory and driving programs are rebooted.

When the reset operation is completed, the terminal 50 requests to disconnect the connection to the remote meter reading server 7 in step S8.

The above method is a remote reset method in which the remote metering server transmits and executes a remote reset aperiodically.

If the terminal and the meter-side wireless modem are automatically reset periodically, an automatic reset cycle is performed to prevent a malfunction when the operator sets the remote metering server IP and port to transmit metering information to the terminal 50 and the meter-side wireless modem. The nonvolatile memory 13 of 4) is set to a 1-byte hexadecimal value. In response to a timer signal that operates every 15 minutes, the internal microprocessor of the meter-side wireless modem 4 and the microprocessor 10 of the terminal 50 periodically scan the nonvolatile memory 13. Read the set auto reset cycle. Thereafter, when the same value is obtained by comparing the read-out automatic reset period and the value of four times the current timer, the reset signal is automatically transmitted to the reset control unit 16 by processing a periodic reset job. The reset control unit 16 simultaneously transmits the power control signal to the power supply unit 17 and the power backup unit 14 to perform a reset after the supply power is cut off for a predetermined time.

If the reset period is to be changed here, the reset time varies depending on the current reset period and the initial operation time. That is, if the initial operation time is 0: 0 minutes, the reset cycle is 24 hours, and the current time is 0:55 minutes, the automatic reset is performed at 1: 0 when the reset cycle is changed to 1 hour.

By the reset method by the power interruption, the malfunction of the hardware and the program of the terminal 50 and the meter-side wireless modem 4 or the cause of inoperation can be eliminated.

According to the present invention described above, when the terminal installed on the meter side and the meter-side wireless modem malfunctions in real time, when the remote reset or automatically reset according to the period set in the non-volatile memory, reset by power interruption By resetting the terminal and meter-side wireless modem by hardware, the operator can fundamentally solve the cause of the malfunction without going directly to the installation site.

In addition, it is possible to reduce the waste of time and manpower by the above effects, there is also an advantage that can create an economic benefit.

Claims (9)

delete delete delete delete delete delete delete delete In the remote meter reading system for reading a remote meter using any one of a mobile communication network and a wireless communication network, A remote meter reading server for connecting a meter-side wireless modem with a mobile-to-mobile call and transmitting a reset command through a server-side wireless modem and a communication control device controlling the same; And A microprocessor that receives the reset command sent from the remote metering server through the meter-side wireless modem and transmits the reset control signal to the reset controller according to any one of the received reset command and the period set in the nonvolatile memory of the terminal. Non-volatile memory whose reset cycle is set to the hexadecimal value of, the reset control unit which transmits the power control signal to the power supply unit and the power backup unit according to the reset control signal of the microprocessor, and the output timer having the power off time for By having a power controller to turn off / on the power output for a set time in the output timer, according to the power control signal of the reset controller, the power off / on reset of the microprocessor, the nonvolatile memory, and the wireless modem of the meter is performed. The power supply unit and the power supply unit by acting the same as the power supply unit Characterized in that the terminal comprises a power backup unit for performing a power off / on reset for the microprocessor, the nonvolatile memory and the meter-side wireless modem when not in operation, Remote meter reading system with remote reset function.