KR970002687B1 - Pager - Google Patents

Abstract

a communication input/output board(21) with a master base station control apparatus where the master base station control apparatus and a transmitter management apparatus receive/transmit data through RS232 interface; a control board(22) comprising a central processing unit(22A), a watchdog timer(22B), a power on reset(22C) and a clock generator(22D); a transmission display board(24) comprising a transmitter operation state displayer(24B), a transmitter error state displayer(24C), a push button displayer(24D) and a serial port(24A); a transmitter management apparatus address setting board(26) setting the transmitter management apparatus using a DIP switch(26A); a communication input/output board(27) receiving/transmitting data of each transmitter through a RS232 interface; a high frequency switch control board(25) comprising a high frequency relay switch controller(25B), a high frequency relay switch state device(25C) and a serial port(25A); and a circuit switching board(30) which is built in the transmitter management apparatus(20), comprising a latch(30A) and a cross pointer(30B).

Description

Phaser Transmitter Management

1 is a use of the conventional transmitter management device,

2 is a use of the transmitter management apparatus of the present invention,

3 is a hardware diagram of the present invention,

4 is a flow chart of the present invention.

* Explanation of symbols for main parts of the drawings

1, 10: master base international language device 2, 20: transmitter management device

3, 30: line changer 4, 40: transmitter

50: serial interface input and output unit

21: Communication I / O with Master Base International Language Device

21A, 27A: Input 21B, 27B: Output

21C: communication input and output controller 22: control unit

22A: Central Processing Unit 22B: Watchdog Timer

22C: Power-On Reset 22D: Clock Generator

23: display unit 23A: keypad

23B: Key Scanner

23C: LCD display unit

24: transmitter display unit 24A, 25A: serial port

24B: Transmitter Operation Indicator 24C: Transmitter Error Indicator

24D: push button indicator 25: high frequency switch control

25A: high frequency relay switch controller 25B: high frequency relay switch controller

26: transmitter management device address setting unit 26A: transmitter management device mode switch

26B: Gate 27: communication input / output unit with transmitter

30A: Latch 30B: Cross Pointer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pager transmitter management apparatus for managing and controlling a transmitter operated by multiple channels, and more particularly, to a pager transmitter management apparatus capable of efficiently managing and controlling a pager transmitter using an external control and an internal control apparatus.

In the conventional transmitter management apparatus, as shown in FIG. 1, the transmitter management apparatus 2 manages the signal through an RS232 interface which receives a remote control command from the master base international language apparatus 1 and exchanges data one-to-one. When the transmitter management device 2 sends a signal through the RS232 interface connected to each transmitter to the transmitter 4 where the control of the high frequency signal is resolved by itself, when an error occurs in a line or an error occurs in the transmitter In the circuit changer (3), the transmitter management apparatus (2) was controlled to find an empty transmitter or an extra line and reconnect to send a signal.

Conventional transmitter management device operating as described above is to control the line switch and transmission unit in the master base international language device, that is, 20 transmitters, for example, 20 serial input and output is required to enable real-time transmitter failure detection. When a communication is performed between a transmitter and a transmitter management device by polling, there is a problem that it is difficult to detect a real time failure instead of reducing the number of serial ports.

In view of the above, the present invention is configured by varying the number of transmitters according to the type of serial interface I / O unit, which is a path through which data of a transmitter management device is transmitted to a transmitter, and the function of a circuit changer connected to a corresponding target transmitter. The transmitter management unit includes a high frequency switch control circuit that controls the transmitter in the transmitter management device to simplify the system configuration, and adds a maintenance function by including a keypad and a display device so that one transmitter management device polls each transmitter. By controlling it in a) way, it can be detected quickly when a transmitter breaks down and the number of serial ports can be reduced according to the number of transmitters.

That is, the present invention provides a communication input / output unit with a master base international language device that exchanges data between the master base international language device and the transmitter management device through an RS232 interface in a one-to-one correspondence; A control unit controlling an internal function of the transmitter management device; The display unit that controls the transmitter locally by using the keypad to control the transmitter locally, displays the status of the transmitter management device and displays letters and numbers when using the keypad, and includes a pushbutton on the keypad for selecting the remote control mode and the local mode. Wow; A transmitter display unit for displaying an operating state of the transmitter, an error state of the transmitter, and a switching state between a remote mode and a local mode; A high frequency switch control unit controlling each transmitter; A circuit switching unit for replacing a spare transmitter with a circuit in case of a transmitter failure or a circuit failure; A transmitter management device address setting unit for setting a mode setting of the transmitter management device using a DIP switch; And a communication input / output unit with a transmitter for transmitting and receiving a transmitter management device and data of the transmitter through a serial interface input / output unit.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating the use of the transmitter management apparatus of the present invention, receiving a remote control command from the master base international language apparatus 10 and transmitting the command to the transmitter management apparatus 20 through the RS232 interface, and controlling the state of the transmitter 40, The transmitter management apparatus 20 that monitors, determines, and transmits a remote control command to the transmitter 40 receives the signal and transmits the signal to the transmitter 40 through the serial interface I / O 50. At this time, although the transmitter management device 20 and the line switcher 30 were conventionally separated, the present invention integrally receives the radio call data signal and sends a signal to the transmitter 40 while being controlled by the transmitter management device 20. In this case, the function of the circuit changer 30 performs the function of switching to an extra transmitter circuit when an error occurs in the circuit or the transmitter, which is the same as that of the conventional circuit changer 3.

The transmitter management apparatus of the present invention will be described in hardware as shown in the third diagram as follows.

The master base international language device 10 and the transmitter management device 20 control the input / output 21A, the output 21B, the input 21A, and the output 21B to exchange data one-to-one through the RS232 interface. A communication input / output unit 21 with the master base international language device 10 including the communication input / output controller 21C; Central processing unit 22A for controlling the internal functions of the transmitter management device 20, the position read timer 22B for transmitting the error of the transmitter 40, the power-on reset 22C, and the central processing unit 22A A control unit 22 including a clock generator 22D for transmitting an ordinary clock; Keys for scanning the input data of the keypad section 23A and the keypad section 23A for inputting and selecting transmitter control data, remote mode and local mode using the keypad and providing them to the central processing unit 22A through the data bus. A display unit 23 composed of a scanner unit 23B and an LCD display unit 23C for receiving and displaying scan data in text form at the central processing unit 22A; Transmitter operating status indicator 24B for displaying the operating status of the transmitter 40, transmission error status indicator 24C for displaying the error status of the transmitter 40, remote mode and local mode. A push button indicator 24D for displaying the conversion status, a common data bus between the LCD display unit 23C and the central processing unit 22A, and a transmitter operation status indicator 24B and a transmitter error status indicator 24C, A transmitter display section 24 comprising a serial port 24A for outputting signals to the push button indicator 24D; Of the high frequency relay switch controller 25B for controlling each transmitter, the high frequency relay switch controller 25C indicating the state of the switch-controlled transmitter, and the high frequency relay switch controller 25B and the high frequency relay switch controller 25C. A high frequency switch control unit 25 comprising a serial port 25A for inputting and outputting signals; A transmitter management device address setting unit 26 for setting a mode setting of the transmitter management device 20 using the DIP switch 26A; Communication input / output unit consisting of an input unit 27A and an output unit 27B that exchange data with the transmitting unit 40 through the serial interface input / output unit 50, which is a data transmission path between the transmitter management apparatus 20 and the transmitting unit 40 ( 27); Line changer consisting of a latch (30A) that maintains the state until replacement is replaced, and a cross-pointer (30B) that replaces a line in order to replace a spare transmitter with a line in case of a transmitter failure or a line failure. It comprises 30.

That is, the high-frequency switch control unit 25 is configured so that the line switching unit 30 is integrally formed in the transmitter management apparatus and the several input / output units 27A and 27B of the communication input / output unit 27 and several transmitters are controlled through the RS232 interface. It is made up.

The present invention configured as described above sets the address of the transmitter to be used in the master base station 10 using the DIP switch 26A of the transmitter management device address setting unit 26 to the transmitter management device. The control device 10 receives data from each other through the RS232 interface with the input unit 21A and the output unit 21B of the communication input / output unit 21. The input / output units 21A and 21B are controlled according to the instructions of the communication input / output controller 21C, and the communication input / output controller 21C exchanges data with the central processing unit 22A via the data bus.

At this time, the central processing unit 22A recognizes the operating state of the transmitter 40 through the high frequency relay state machine 25C and the serial port 25A and allows the user to check it through the transmitter operation indicator 24B. . In addition, whether or not there is an abnormality in the transmission unit 40 and the line allows the user to confirm through the transmission error status indicator 24C connected to the other end of the serial port 24A of the transmitter display unit 24. Of course, the presence of an abnormality is always monitored through the clock generator watchdog timer 22B and the power-on reset 22C of the controller 22. If there is an error in the above, the clock signal from the clock generator 22D of the control unit 22 is sent to the latch 30A of the line switching unit 30 so that the extra transmitter and the line can be replaced by the cross pointer 30B. Keep latching until

Subsequently, after the replacement is performed through the line switching unit 30 (the replacement process is the same as in the related art, it is omitted). Then, the watchdog timer 22B checks whether the transmitter and the line have an error or not. 24, and if there is no error, the keypad unit of the display unit 23 for determining the remote mode and the local mode in the transmitter display unit 24 and the push button indicator 24D connected to the serial port 24A ( The LED (push-button indicator 24D) displays the state (23) of which the key of 23A) is pressed as its LED (the remote mode and the local mode). In this case, when the LED of the pushbutton indicator 24D is not displayed and the key is not pressed, it is checked in the central processing unit 22A of the control unit 22 whether it is in the remote mode, and the external (master base international language device 10 or the transmitting unit) is checked. (40), check whether a control command or report request command is received. If it is determined to be remote and the command from the outside is a command related to the transmitter 40, it is confirmed by the central processing unit 22A and transmitted to the outside (Master Base International Language Device 10). The cross-pointer 30B of the high frequency switch control unit 25 and the line switching unit 30 including the serial port 25A, the high frequency relay switch controller 25B, and the high frequency relay switch state machine 25C connected to the transmitter 40. It will transmit information of the degree of tampering.

In the display unit 23, when the key is not pressed in the local mode, the keypad 23A is used to generate actual data so that the transmitter 40 can be controlled by the local signal, and when there is no control command, the liquid crystal display element ( The display unit 23C displays the state of the transmitter management apparatus 20. In this case, since the high frequency switch control unit 25 controls the transmitter 40 to control several transmitter switches (the control technology itself is known), one RS232 interface can control several transmitters in a polling manner. The number can be reduced.

The operation will be described in more detail using the flowchart of FIG. 4 as follows.

In order to operate the transmitter management apparatus 20, the system is initialized (for example, initialized with the initialization setting key of the display unit 23) (step S1), and through the transmitter operation status indicator 24B of the transmitter display unit 24. It is checked whether the transmitter 40 is in operation (step S3). After it is confirmed that the transmitter 40 is in operation (S2), the error state of the transmitter 40 transmits the error state confirmation signal of the transmitter 40 through the transmitter error indicator 24 of the transmitter indicator 24 at a predetermined time. Send (step S3). The error state of the transmitter 40 is transmitted from the transmitter error indicator 24C to the central processing unit 22A of the control unit 22, and the watchdog timer 22B determines the error state (step S4). To pass).

If it is determined that there is an error, the line switcher 30 switches to the extra transmitter and the line (step S5), and returns to the step S3. The push button indicator 24D of 24 confirms whether the setting key of the keypad portion 23A of the front panel that determines the remote mode and the local mode is pressed. If it is determined in step S6 that it has been pressed, the current registers are initialized and the state of the key is changed (step S7). Then, after confirming that the changed state is the remote mode (step S8), to confirm the operation state of the Morse switch, the mode is changed to the local mode in the remote mode (step S9), and the mode is changed to the remote mode in the local mode (step S10). ).

If it is determined in the step S6 that the state before it is pressed, it is checked whether the mode is the remote mode (step S11). If it is determined in the step S11 that the remote mode is not in the remote mode, the display unit 23 checks whether there is a control command using the keypad unit 23A (step S12). If it is determined that there is a control command, the keypad unit 23A performs the control of the transmitter 40 and the line changer 30 by a key operation (step S13), and returns to the step S3, and determines that there is no control command. In this case, the LCD display unit 23C indicates the state of the transmitter management apparatus 20 and the state of the keypad 23A (step S14) and returns to the step S3.

If it is determined in the step S11 that the remote mode, the CPU 22 checks whether there is a control command or a report request command from the outside (step S15). If it is determined in step S15 that there is no control command, the process returns to step S3. If it is determined in step S15 that there is a control command, it is checked whether the command is for the transmitter 40 or the command for the base station 10 (step S16). If it is determined that the command (2, 3) for the transmitter 40 in the step (S16), and transmits the message from the base station 10 to the transmitter management and transmitter 40 (step S17), the base station 10 If it is determined that the command (0.1) is for the simulation, the delay time operation of the line or the degree of damage of the cross-pointer 30B of the high-frequency switch control unit 25 and the line switching unit 30 connected to the transmitter 40 are simulated. And a response to the alarm condition to the base station 10 (step S18). When the steps S17 and S18 are finished, the process returns to the step S3.

As described above, according to the present invention, the number of transmitters is changed according to the type of serial interface input / output unit, which is a path through which data of a transmitter management apparatus is transmitted to a transmitter, and a function of a circuit changer connected to a corresponding target transmitter is provided. The transmitter management device includes a high frequency switch control circuit that controls the transmitter in each transmitter, simplifying the system configuration, and adding a maintenance function with a built-in keypad and display device, so that one transmitter management device polls each transmitter. By controlling by (Polling) method, it is possible to quickly and easily configure the whole system because the number of serial ports can be reduced by fast detection in case of failure and the number of transmitters.

Claims (2)

A communication input / output unit 21 with the master base international language device that the master base international language device and the transmitter management device exchange data in one-to-one correspondence through the RS232 interface, and a central processing unit 22A that controls the internal functions of the transmitter management device. And a control unit 22 including a position read timer 22B for transmitting an error of the transmitter 40, a power on reset 22C, and a clock generator 22D for transmitting a periodic clock to the central processing unit 22A. A transmitter operating status indicator 24B for checking the operating status of the transmitter, a transmitter error status indicator 24C for indicating an error status of the transmitter, and a switching status of the remote mode and the local mode. The push button indicator 24D and the data bus between the LCD display unit 23C and the central processing unit 22A are commonly attached to the transmitter operating status indicator 24B, the transmitter error status indicator 24C and the push button 24D. Output signal to The transmitter display unit 24 comprising the serial port 24A, the transmitter management device address setting unit 25 for setting the mode setting of the transmitter management device using the DIP switch 26A, and each transmitter of the transmitter management device and the transmitter; A pager transmitter management device comprising a communication input / output unit 27 for transmitting and receiving data through a RS232 interface in a one-to-one correspondence, comprising: a high-frequency relay switch controller for selectively controlling each transmitter high-frequency relay switch in the transmitter 40 ( 25B), a serial port 25A for inputting and outputting signals from the high frequency relay switch state machine 25C, the high frequency relay switch controller 25B and the high frequency relay switch state machine 25C, and sharing a data bus with the control unit 22. High frequency switch control unit 25 made of; In the event of a transmitter breakdown or line breakdown, it is composed of a latch (30A) that maintains the status until replacement is replaced to replace the spare transmitter with a line and a crosspointer (30B) that replaces the line. A pager transmitter management apparatus comprising a line switching unit (30) embedded in the device (20). The apparatus of claim 1, wherein the keypad 23A is used to generate actual control data to control the transmitter 40 locally through the key scanner 23B, and to display the status and keypad of the transmitter management apparatus 20. (23A) A pager transmitter management apparatus characterized by maximizing the maintenance function of the transmission unit (40) by adding a display unit (23) which displays letters and numbers on the LCD display (23C) during use.