I. Product introduction
DC power monitoring device (HSC6880V2) adopts serial bus structure, decentralized control and centralized management mode, and its monitoring system organization structure is shown in Figure 1. Each functional module in the DC system is an intelligent unit with a CPU, and all have self-diagnosis capabilities; the communication between the module and the monitor is all serial communication; when any module fails, it will not affect the normal operation of other units, and the centralized monitor It can respond to the current faulty module through alarms in time. Advanced control logic and communication verification algorithm can ensure that the system will not malfunction under any interference environment.
Second,Features

(a) A resource-rich software and hardware platform. Using embedded ARM processor, the operating frequency can be up to 200MHz; using light Linux operating system, 64M bytes of DRAM, 64M bytes of flash, support 7 RS232/RS485 serial ports, 10M network interface. Abundant software and hardware resources provide guarantee for the continuous upgrading and improvement of the system.

(b) 10.4-inch large-screen TFT true color LCD Chinese character display, using touch screen operation, built-in software keyboard can directly perform all operations, a good solution to the key Invalidation problem, Windows interface style, simple and convenient operation, and provide operation prompt information.

(c) High degree of intelligence, can locate the fault information of the system very accurately and give an alarm; including AC abnormality, DC abnormality, module fault, communication interruption, Abnormal working conditions of the battery, electrical failure, abnormal operation of the charger, switch tripping, abnormal insulation, etc.

(d) It has the function of automatic temperature compensation for battery float voltage. The temperature compensation coefficient can be set according to different battery types, the typical value is 0.001V/℃. The battery is intelligently managed, with conventional functions such as voltage stabilization, current stabilization, and floating charge conversion; it supports parallel operation of two groups of batteries.

(e) Use serial communication with the charging module, and the input and output are electrically isolated.

(f) Provide an independent interface for communication with the insulation monitor, support a variety of insulation monitors, which can effectively prevent the insulation monitor far from the main screen from affecting the main system. interference.

(g) All external interfaces use data communication ports, providing RS232/RS485 interfaces that are completely electrically isolated from the DC system for remote monitoring. The supported protocols include CDT92 , 101, 103, MODBUS, etc. Communication data can be configured according to user requirements.

(h) rich data resources, a variety of data query methods, including tables, graphics and analysis data.

(i) All alarms are recorded and displayed in Chinese characters and displayed on light signs; a maximum of 512 historical alarm records with time stamps are supported, which can be scrolled and displayed without manual labor. delete.

(j) The system can set up screens arbitrarily, flexible system configuration means, and flexible parameter settings, which are convenient for system transformation and upgrading. The main parameters that can be set include: battery capacity, AC and DC alarm thresholds, temperature compensation coefficient, number of battery cells (maximum 248 cells), single battery overvoltage and undervoltage values, floating charge conversion condition settings, screen saver time, battery ambient temperature alarm threshold, etc.