Medical cold chain wireless monitoring system

Case background

In recent years, with the progress of society and the development of economy, science and technology, people's living, working and production levels have been greatly improved. With the development of science and technology, the medical level is also improved simultaneously. At the same time, higher requirements are put forward for medical equipment and equipment. Cold chain system is one of the important links. It's not easy to use GPRS to monitor the complexity of the system in advance, and it's not easy to use GPRS to monitor the system in advance. At the same time, it's not easy to use GPRS to monitor a large number of human resources in advance, so it's not easy to use GPRS to monitor the system in advance.

Scope of application

Remote monitoring and management of central blood stations, vaccines and special drugs

Urban water, heat and gas pipe network monitoring system

Smart grid distribution metering system

Oil well remote monitoring system

Remote metering system of thermal power plant

Remote monitoring system of meteorological station data

Temperature, humidity and grain condition monitoring system

Remote measurement and control system of river water level valve

Remote control system of high voltage switch

Remote data transmission system of Meteorological Station

Remote measurement and control system of water source well

Oil well remote monitoring system

Remote monitoring of water source well

Remote monitoring of Hydrology (rainfall and water level)

Remote monitoring of liquid level and flow

system composition

The medical cold chain remote monitoring system is mainly composed of dispatching center, cold chain monitoring center, communication platform, cold chain remote measurement and control terminal RTU, measurement (temperature sensor, etc.) equipment and control equipment (temperature controller, etc.).

System functional features

Through the remote wireless monitoring system, the temperature in the refrigerator (fresh-keeping cabinet and cold storage), the working state of the system, the voltage and current of the power supply system, the voltage of UPS battery and the temperature of UPS can be transmitted back to the monitoring center for 24-hour real-time monitoring, so as to provide a strong basis for further fault prevention and treatment; Early warning in case of abnormal temperature, voltage and current; In case of power failure, switch to UPS power supply, etc.

Hardware and software support

A. Hardware description

Rtu4100-l

Product introduction

1、 Product features

Power supply mode of 3.7V lithium battery

Provide RS232 and RS485 communication interfaces

Ultra low power consumption, standby current as low as 25-35 µ a, suitable for long-term work in the field

Various standby working modes can be customized

Support server configuration time

Support Modbus ASII and RTU protocols

Support custom handshake package and heartbeat package

Have a unique ID number

Only Automatic wake-up mode is adopted, and 3ua-4ua can be achieved in standby mode.

Collect the information of 4 sensors regularly and store it in flash

Connect with the server regularly and upload the collected data

2、 Relevant information

General dtu4100 instructions

Low power configuration software

DTU configuration software

Ultra low power GPRS specification

3、 Workflow

Normal standby

When the timing acquisition time is up, wake up the equipment, collect data, store the collected data and stand by.

When the scheduled return time is up, wake up the device, online server, upload data and standby.

It supports four standby modes: week, hour, minute and interval

In case of alarm, immediately start up and send back data to the server;

In case of emergency alarm, you can send text messages to 8 people according to the preset text message content;

[interval time] can be configured as 0-65535 second interval.

[time of day] can be configured to wake up from 1-7 minutes in a week.

[hour] mode can be accurate to the minute of every day, and can be configured as 1-7 time points to realize fixed-point wake-up.

[minute] mode can be accurate to the minute time in each hour, and can be configured as 1-7 time points to realize fixed-point wake-up.

4、 Power consumption calculation

Rtu-l series is mainly divided into three working modes

Timing mode, alarm mode and networking mode

Working mode power consumption

Timing mode (3-4) UA can only wake up regularly

Alarm mode (20-33) UA can externally trigger wake-up

Networking mode 80mA always networking mode

The scheme adopted in this scheme is the combination of alarm mode and networking mode

If each networking communication time is 2 minutes, the working time of one 10Ah battery is:

Calculation method:

Assuming that the network is connected all the time, the working time is 10000 / 80 = 125 hours = 7500 minutes = 3750 times

Assuming that the number of networking times per day is 1, the working time is 3750 days

Assuming that it is always in the alarm mode, the consumption current of one year is: 33 * 24 * 365 UA = 289080ua = 289ma, accounting for about 1 / 34 of the total electricity

B. Software function

a) . remotely monitor the temperature in the refrigerator (fresh-keeping cabinet and cold storage), the working state of the system, the voltage and current of the power supply system, etc;

b) . remotely monitor the operation status of UPS system, UPS battery voltage, UPS temperature, etc.

c) Support the storage and historical record query of various monitoring information, control information, alarm information and operation information.

d) Generate various data reports and data curves.

C. Software screenshot

real-time display

1) . the device list on the left shows the information of current online and offline devices. When the device is connected to the network, it will enter the "online device list" from the "offline device list". If the device is not online for a long time, it will enter the "offline device list" from the "online device list";

2) . the upper right corner displays the equipment number, user name, contact person, operation date, system service expiration date, telephone, fax, mobile phone, address, SIM card number and other information;

3) . the upper left corner displays the temperature, voltage and current signals of the cold chain system, the working and operating status of the UPS system, UPS battery voltage, UPS temperature, etc;

4) . the temperature, voltage and current signals of the cold chain system, the working and operating status of the UPS system, UPS battery voltage, UPS temperature and other curves are displayed in real time under the window;

5) . the middle text prompts the current equipment login time and the last time of collecting and returning data;

Historical records

1) Users can search history according to time period;

2) The history record will be drawn on the window in the form of curve, and the history record can be displayed under the window in the form of list. Through the history record, the equipment operation status and relevant trend can be viewed;

3) The history records queried at the same time can be exported to excel;

Effect drawing of configuration software

Users can customize the program through configuration software according to their needs, so that the interface expression form is more flexible;

D. Advantage characteristics

In case of voltage, current, temperature, over limit, equipment protection and other conditions on site, the site controller can send alarm text messages to inform relevant personnel.

Save and manage the human resources on site.