KR100219984B1 - Voltage measurement board in automatic battery monitoring apparatus - Google Patents

Abstract

The present invention provides an automatic battery monitoring apparatus for monitoring a state of a battery through a control terminal that issues a control command for the battery and receives the notification and a remote control terminal that issues a control command for the battery and receives the same. A CPU and a CPU peripheral circuit 1 composed of peripheral circuits for driving the CPU, such as a reset of the control unit, an address decoding unit 2 controlled by the CPU and the CPU peripheral circuit 1 to select a device; The device address unit (3) which provides a unique number of the device in order to distinguish a plurality of battery automatic monitoring devices connected to the control terminal, compares the device addresses when exchanging messages with the control terminal, and decodes and receives only a message corresponding thereto. A memory unit 4 which registers all driving programs of the battery automatic monitoring device and measures and temporarily stores the voltage value of the battery; The communication port unit 5 is connected to the control terminal for transmitting and receiving messages in a block, the bus connection unit 6 for exchanging addresses and data for signals with an external board, and the storage battery voltage as an analog value. An A / D conversion unit 7 for converting to a discrete value for storage in an analogue, an analog switch unit 8 for selecting analog signals of a plurality of cell interface modules connected to an automatic battery monitoring device, and a storage battery A board for measuring voltage in a battery automatic monitoring device comprising a board selector 9 for controlling a plurality of cell connection modules connected to the automatic monitoring device.

Description

Voltage measurement board in battery automatic monitoring device

The present invention relates to a battery automatic monitoring device, and more particularly to a device for monitoring a battery located in a remote place.

In particular, the present invention automatically measures the voltage and voltage fluctuations of the individual batteries (Battery) constituting a rectifier and an uninterruptible power supply (UPS) of the environmental monitoring targets in the communication station, and performs the result of transmitting and receiving the remote control terminal An automatic battery monitoring device (CAMS) can be implemented.

(The conventional technique and the problem)

With the development of information and communication technology, communication equipments for providing various information communication services are being installed, and the number of communication stations that can effectively install and operate such communication equipment is increasing rapidly. In this situation, telecommunication service providers can remotely monitor and control the telecommunications company's environment remotely in order to operate and maintain the telecommunications company at a minimum cost, thereby eliminating operational personnel for management, thus reducing operational costs and preparing for accidents at all times. Do it. Therefore, the device for monitoring the communication station remotely performs the function of providing the remotely monitored operators of the communication station's surroundings in real time online and control the state of the monitoring objects if necessary. Examples of such environmental monitoring targets are analog items, such as cell voltage and total voltage of a battery, voltage of a commercial power supply, frequency, power supply-related items such as rectifier and uninterruptible power supply (UPS), and environment such as temperature and humidity. There are related items, and there are items such as generator and air conditioner operation and control, door, fire, and halon gas as digital monitoring and control points.

The present invention automatically measures the voltage of the individual batteries (batteries) constituting the rectifier and the uninterruptible power supply among the environmental monitoring objects in the communication station, and the battery automatic to perform the function of transmitting and receiving the results to the remote control terminal It is about control and measurement board of monitoring device (Cell Automatic Monitoring System or below) and this function is implemented in control and measurement module of CAMS, and it automatically measures the voltage of battery according to the measurement cycle and monitors the measured value. This board performs the function of reporting to the terminal.

(Detailed Description of the Invention)

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

1 is a functional blur diagram of a system to which the present invention is applied, and includes a control measurement unit, a cell connection unit, a power supply unit, and a back board.

The cell connection can measure up to 24 cell voltages per card and up to 16 cell connection cards can be mounted on the device, allowing up to 384 battery cell voltages per device. 쎌 Connects the cell terminal signal to the connection part and sends it to the analog switch of the control measurement board through the stabilization part through a switch for selecting the value to be measured according to the control of the control measurement part.

The control measuring unit converts the analog signal inputted through the cell connection unit into digital through the A / D conversion unit, reads the data, stores it in the buffer, and transmits it in the format requested by the monitoring control terminal. It consists of a part, a device address part, a memory part, a communication port part, a bus connection part, an A / D conversion part, an analog switch part and a board selector part.

The power supply supplies the power required by the system, and the back board connects the signals between the control measurement, the cell connection and the power supply.

Fig. 2 is a general configuration diagram of the present invention, wherein the CPU and CPU peripheral circuit 1, address decoding unit 2, device address unit 3, memory unit 4, communication port unit 5, bus connection unit 6 ), An A / D changer 7, an analog switch 8, and a board selector 9. The CPU and the CPU peripheral circuit 1 are composed of peripheral circuits (U25, U24, U20, U21A, etc. in FIG. 3) for driving the CPU, such as a reset of the central controller and the central controller. The address decoding unit 2 is a part (U14 in FIG. 3) for selecting a device controlled by the CPU 1, and the device address unit 3 is used to distinguish a plurality of CAMSs connected to the monitoring control terminal. When providing a unique number and exchanging a device address with a monitoring control terminal, the device address is compared and decoded and received only (SW2 and U19 in FIG. 3). The memory unit 4 registers all driving programs of the CAMS. In addition, it is a block (U21, U22 in Fig. 3) that is in charge of the function of measuring and temporarily storing the voltage value of the battery. The communication port unit 5 is a block connected to the monitoring control terminal and functions to transmit and receive a message (U26, U15, U16, U17, and U18 in FIG. 3). The bus connection unit 6 is responsible for the bus connection function for address and data exchange between the control and measurement module and the cell interface module used in the CAMS equipment. All buses are connected to the buffers (U4 and U5 in FIG. 3). . The A / D converter 7 converts the battery voltage, which is an analog value, into a discrete value for storage in a memory unit. The A / D converter 7 uses an A / D converter having a 12-bit resolution to increase accuracy. U35, U6, U7 in Fig. 3). The analog switch section 8 is responsible for selecting analog signals of up to 16 cell interface modules connected to the CAMS (U2 in Fig. 3). The board selector 9 is an address selector for controlling the cell connection module connected to the CAMS and can control up to 18 cell connection modules (U3 in FIG. 3).

1 is a functional block diagram of a battery automatic monitoring device;

2 is a functional block diagram of a pressure measurement board of the present invention;

3 is a circuit diagram of a pressure measurement board of the present invention.

* Explanation of symbols for main parts of the drawings

1: CPU and CPU peripheral circuit 2: Address decoding unit

3: device address section 4: memory section

5: Communication port part 6: Bus connection part

7: A / D conversion part 8: Analog switch part

9: board selector

Conventional battery automatic monitoring device measures the voltage of total voltage up to -48V for 24 series connected battery.Measurement method also receives cell voltage, divides the voltage by a certain ratio, and then selects the cell to measure. In contrast, the device of the present invention has an irregular error rate of 0.2% to 1.5%, whereas the device of the present invention can measure up to 384 batteries, and can measure high voltages up to 430V. The error rate is stable within 0.3% because it measures the voltage across the cell as it is and adds a noise reduction circuit.

Claims (2)

In the battery automatic monitoring device for monitoring the status of the battery through a control terminal for giving a control command to the battery and receiving the notification, and also a control terminal for giving a control command for the battery and receiving a notification thereof, CPU and CPU peripheral circuit (1) composed of peripheral circuits for driving the CPU, such as (Reset), and the CPU and CPU Peripheral Circuit (1) provides a unique number of the device in order to distinguish between the address decoding unit (2) which selects the device and selects the battery automatic monitoring device connected to the control terminal, and provides a device address when exchanging messages with the control terminal. A device address unit 3 for comparing and receiving only a message corresponding thereto by comparison, a memory unit 4 for registering all driving programs of the automatic battery monitoring device and measuring and temporarily storing the voltage value of the battery, and controlling A communication port unit 5 for transmitting and receiving messages in a block connected to the terminal, a bus connection unit 6 for exchanging an address and data for a signal with an external board, and a storage battery voltage as an analog value A / D conversion unit 7 for converting to discrete values for storage and analog signals of a plurality of cell interface modules connected to the battery automatic monitoring device. Analog switch part 8, and a storage battery monitoring device automatically a number of boards for voltage measurement at the battery monitoring device automatically, characterized in that the board is configured as a selector (9) for controlling a cell that is connected to the connection module for . The method of claim 1, The A / D change unit is a voltage measurement board in the automatic battery monitoring device, characterized in that the A / D converter having a 12-bit resolution.

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