Bathroom Sanitary Ware, Stainless Steel Sanitary Ware, Traditional Sanitary Ware, Kitchen Sanitary Ware ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsir-valve.com
Keywords: AI3190S touch screen
I. Overview
In the blood ward, the requirements for temperature, humidity and illumination are quite high. In order to improve the degree of automation, a temperature and humidity monitoring system has been added to the air conditioning system of the blood ward of Beijing Tongren Hospital. The AI-2000 type touch screen PC is used as the upper computer, and the AI ​​series instrument is used for collecting data and controlling output. Real-time collection and display of temperature, humidity and various switching quantities of air conditioning units, chillers, auxiliary rooms and various wards are realized.
Second, the system composition
The system hardware is composed as shown below
Figure 1: System block diagram
Third, the system function
1. Temperature and humidity control automatic / manual switching function;
2. Fan operation/standby switching control;
3. Patient interlocking and disinfection interlocking control: stop, prepare, self-clean, check-in;
4. Remote adjustment of ward lighting;
5. Ward leakage alarm function;
6. The AI-3190S touch screen PC is responsible for all aspects of industrial field connection monitoring, data collection and processing of various transactions;
7. The control screen is shown in Figure (2)
Figure 2: Touch screen control screen
Centralized management and decentralized control of the entire system to facilitate the management of the leadership. AI-2000 touch screen PC and AI instrument use RS-485 communication, with long signal transmission distance, strong anti-interference ability and high stability.
Fourth, equipment selection
1, touch screen
AI-3190S touch screen PC has outstanding features such as high precision, high reliability, intuitive display, friendly interface, convenient operation and easy function expansion. It can run not only various embedded operating systems and software such as WINDOWSCE and LINUX. PC operating system and software such as WINDOWS 98 are rich and flexible, and can completely replace paperless recorders, man-machine interfaces and other products. The display adopts a 10.4-inch TFT true color LCD screen. With the touch screen operation, the display is intuitive and easy to operate.
At the same time, the CF electronic disk is used to solve the problem that the ordinary hard disk is not resistant to vibration, and can be applied to an industrial site. It has one RS232 communication interface, one RS485 communication interface, one parallel printing port, one USB interface, one PS/2 mouse interface, one keyboard interface and one RJ45 Ethernet port.
The operating system adopts WIN CE as the operating system. The WIN CE operating system has the characteristics of high stability, simple operation, low system resource consumption, etc., and is widely used in industrial control embedded systems; the system software is embedded in the configuration software by MCGS twice. Developed software products, users do not need system configuration, installation; power can be used directly. Together with the Yuguang instrument, it forms the instrument bus system.
2, AI series instrument
AI-301M is used as a digital input/output (I/O) interface in computer control system. It uses RS485 communication interface to communicate with computer, which can provide cheap and high-reliability switch input and output for computer; AI- The 301M adopts the platform concept to separate the system hardware from the software, and can be modularly combined. In this system, the AI-301M meter is used to switch the on-site switch of fans, chillers, air-conditioning fans, and various indicators. Acquisition and control. The output module selects the L4 and L5 modules, and the input module selects the I5 module. The model number is AI-301ME5L4L4L4I5I5S. The specific functions are as follows:
L4 large capacity long life relay normally open contact switch output module;
L5 2-way relay normally open contact switch module;
I5 two-way external digital input module.
S photoelectric isolation RS485 communication interface module
The AI-301M only needs to set the baud rate and the communication address. In the project, the E5 type is adopted and the rail mounting method is adopted. The baud rate and the communication address are set by the dial switch mode, a total of 10 bits, 1-7 bits define the instrument communication address, binary algorithm, when the address exceeds 100, the meter defaults to 199. The 8th bit defines the communication baud rate BAUD. When it is set to "0", the communication baud rate is 9600; when it is set to "1", the communication baud rate is 4800.
The AI-708 regulator is a domestically produced advanced instrument. It uses a high-performance ASIC chip and modular hardware design. It uses digital correction technology on both input and output signals to eliminate the poor stability of the adjustable resistor. The error brought by the automatic zero adjustment technology can be used for a long time without zero drift, and the measurement digital is accurate and stable; it has various input and output specifications and alarm mode settings. The power supply can fluctuate within a wide range of 85-264VAC (50-60HZ), ensuring measurement accuracy and stability in a highly interference environment. In this system, according to the system requirements for temperature detection and control of 3 wards, chiller humidity detection and control, and control output of dimming in 3 wards, dimming output is 4-20 mA signal to control shift Phase controllable silicon output for dimming. The specific instrument models are: AI-708AXS4, AI-708AL4S, AI-708E5K5S. The specific module functions are as follows:
X photoelectrically isolated linear current output module;
S4 RS485 communication module with isolated power supply;
L4 large capacity long life relay normally open contact switch output module;
K5 single thyristor phase shift trigger output module;
The main parameters that need to be set are:
CTRL control mode, select the control mode of the instrument;
SN input specifications, select the input specifications of the meter,
OP1 output mode, select the form of the main output signal of the instrument, and the type of module installed on the main output is the same. (For parameter settings, please refer to the instruction manual)
The AI-808 regulator also has a manual/automatic bumpless switching operation based on the AI-708 regulator, with manual auto-tuning and display output values, and as a proportional output for the servo amplifier to directly control the valve position. In this system, the AI-808 meter is used for temperature detection of the air conditioning unit and forward and reverse control of the servo motor. The specific model is AI-808AL4L4S. The main parameter settings: CTRL=1 using AI artificial intelligence adjustment; OP1=7, for valve feedback signal, automatic positioning of valve position measurement. SN=1, S type thermocouple input.
Five, software system
The AI-3190S touch screen system software adopts the MCGS embedded configuration software, and the secondary development is carried out according to the system requirements. The software is embedded in the touch screen, the user does not need to perform configuration and software installation, and the software runs automatically after the touch screen is started.
Main functions: real-time display of temperature and humidity; in the case of automatic control, the user can set the given value of temperature and humidity; on the touch screen, the user can do the following operations: switching of temperature and humidity control mode; fan conversion of air conditioning unit; chiller, Start and stop of exhaust fan and fan; dimming brightness control; switch of ward indicator light. You can observe the working status of each device.
Conclusion
The blood ward monitoring system of Beijing Tongren Hospital, which consists of AI series instruments and AI-3190S touch screen PC, has been operating without failure for nearly one year and is in good condition. The system configuration using AI series is simple and convenient; the function is reliable and stable. The AI-2000 touch screen PC has one RJ45 Ethernet port, which can be used to set up a network to facilitate system expansion.
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