Web-based real-time management and monitoring system for equipment network

0 Introduction
This paper introduces the design and implementation of a real-time management and monitoring system for equipment. The system uses single-chip microcomputers and network technology to achieve real-time and networking of equipment management. The host in the monitoring station can remotely monitor the laboratory through the network. This system organically combines smart card management, image monitoring and data query, so that managers can understand the situation in a timely manner and make correct decisions in the shortest time, thereby greatly improving the teaching quality.

1 System hardware circuit
The hardware structure diagram of the management and monitoring system is shown in Figure 1. The system hardware mainly includes field control unit, wireless data transmission equipment, image transmission system, smart card, etc., which are introduced as follows:

1.1 Field control unit
The core device of the field control unit is the single-chip microcomputer P89LPC932. P89LPC932 is a high-performance FLASH single-chip microcomputer newly launched by PHILIPS, which has the characteristics of high integration, low power consumption, small pins, low price and high speed. The pin arrangement of P89LPC932 is shown in Figure 2. The monitoring host completes the verification of the ID card (IC card number). The field control unit mainly collects data on the use of the equipment and uploads the data to the monitoring host and monitoring station. At the same time, it receives commands from the monitoring host or monitoring station and controls them, such as dynamically controlling the switch state or configuration of the equipment.

1.2 Wireless data transmission equipment
The wireless data transmission equipment is a bridge connecting the monitoring host and the field control unit. Various commands from the monitoring station and the monitoring host are sent to the field control unit via the wireless data transmission equipment, and the data of the field control unit is uploaded to the monitoring host and the monitoring station via the wireless data transmission equipment. The wireless data transmission equipment uses a query method to check whether each field control unit has an event report, and sends equipment diagnostic messages upward when idle.
The main chip of the wireless data device is nRF903. nRF903 is a true single-chip UHF multi-band wireless transceiver chip designed for the 433/868/915ISM frequency band. It uses optimized GMSK modulation and demodulation technology and can transmit data up to 76.8Kbps at an effective bandwidth of 155.6kHz, with a maximum transmission power of +10dBm. All parameters can be set using a 14-bit configuration register using the SPI serial line. By using nRF903, the reliability of the system is enhanced.

1.3 Image transmission system
We installed cameras in front of each laboratory, and the images collected on site were compressed, packaged and transmitted to the monitoring station through the network. The managers in the monitoring station can understand the dynamics of each laboratory through the images.

2 System software
The monitoring management system software mainly consists of three parts: monitoring station software, monitoring host software and single-chip microcomputer. The monitoring station software and monitoring host software are developed using VC6.0++. The interface is friendly, the query is convenient, and the interactivity is strong. The database uses the traditional Microsoft Access. The database interface uses ODBC (Open Database Connectivity) and ADO (Advanced Data Objects). ODBC is a unified interface standard for application programs to access databases under the Windows environment, and ADO is a new database access interface under the Windows platform. With it, the system is simpler and runs faster. The operating platform of the software system is Windows98 or above (including Windows98). The monitoring host software flow chart is shown in Figure 3:

3 Introduction to the main functions of the system
This system is mainly to prepare for the full opening of the laboratory. Through this system:
1) Students log in to the laboratory table by swiping their cards, and then swipe their cards to leave the laboratory table.
2) Managers can check which student is doing experiments at which laboratory table in which classroom, and the usage of the laboratory table in the past few times through the campus network.
3) Managers can dynamically control the switch status of the equipment.
4) Managers can reorganize the equipment.
5) Managers can check the usage of the equipment at any time. For example: equipment utilization; the length of time a single device is used, etc.

4 Conclusion
This paper introduces the Web-based equipment management and control system in detail, which realizes the intelligent management of equipment. The system makes full use of the campus network to receive and analyze data and interact with the database. Experiments have proved that the system will provide a powerful platform for the dynamic management of our equipment. If the system is further studied and expanded, and daily management work is added to become a comprehensive management platform, it will play a positive role in promoting the development of our hospital.