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Product details
1、 User demand analysis
A certain enterprise has a project for an archive room, which is divided into two areas: document archiving and digital archiving, with a total area of 80 square meters. It is necessary to monitor its temperature and humidity, fire protection, theft prevention, water leakage, etc UPS、 Air conditioning, etc.
General equipment:
1. Power supply: small 3-6KVA UPS uninterruptible power supply;
2. 1-5 network cabinets, equipped with core computer devices such as routers, switches, servers, etc.
3. Maintenance mode: 1-2 full-time (part-time) maintenance personnel without 24-hour duty (some places use security patrols).
The computer room air conditioning system uses 1-2 civilian (wall mounted, cabinet mounted, ceiling mounted) 1-5 horsepower air conditioners to ensure the indoor temperature and humidity requirements.
Two air conditioners are turned on together in summer and alternately in winter, both controlled manually.
The existing air conditioning system does not have a self starting function when powered on.
Analysis List:
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temperature and humidity |
Requirements for monitoring room temperature and humidity in archives: The temperature in the archives warehouse should be controlled between 14-24 ℃, with a fluctuation range of no more than ± 2 ℃ per day and night; The relative humidity should be controlled between 45% and 60%, with a fluctuation range of no more than ± 5% per day and night. |
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fire protection system |
Smoking is strictly prohibited in the archives room. To avoid irreversible consequences, measures must be taken and the fire protection system must be improved |
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Anti theft system |
The archive room should be equipped with anti-theft doors, anti-theft windows, and security keys. When there is no one guarding, it is inevitable to install anti-theft alarm systems to avoid serious consequences such as file loss, resource loss, and damage caused by illegal intrusion |
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Leakage system |
To avoid the decay and damage of files caused by water pipes, air conditioners, and other equipment leakage, which can have adverse consequences on computers, switches, and other devices, a leakage system is also essential. |
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Power monitoring system |
The archive room has a power outage alarm, and the digital archive room is equipped with UPS power supply. To ensure its normal operation, it is necessary to monitor the UPS working status to avoid data loss due to emergency situations. |
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air conditioning control |
An increase in temperature can easily cause damage to equipment in the archive room, resulting in a shorter lifespan. The archive room requires appropriate temperature to ensure the storage of documents and the normal operation of components and other equipment. When the temperature rises or when power is turned on, the air conditioning will automatically start. |
2、 Design Basis
Starting from the actual situation of major enterprises, we aim to maintain the integrity and security of archives to the greatest extent possible, and facilitate their utilization. Maintaining the integrity of archives refers to maintaining the organic connection and completeness between the content and form of archives; The second refers to ensuring that archival materials are not missing, omitted, or divided. Maintaining the security of archives refers to preventing accidents such as loss, fire, water immersion, mold growth, insect infestations, rodent infestations, etc. that damage archives; The second refers to preventing the leakage of archive content. Facilitating the utilization of archives refers to using modern management methods such as computers to improve the efficiency of archive retrieval and utilization. The second refers to providing a secure and confidential environment for viewing archives, as well as conditions and equipment for copying archives.
3、 Design solutions
Solution:Monitoring host (SPD-200GSMePr)
Realize telephone and SMS alarm+display of current real-time temperature+air conditioning power outage/high temperature self start+on-site sound and light alarm+smoke alarm+mains power outage alarm+real-time monitoring of various parameters of three-phase electricity+UPS real-time monitoring
Implementation function:
1. Due to a shortage of manpower and unattended personnel in the archives room, an emergency situation occurred. The staff was informed by phone call to avoid unnecessary losses
2. Display the current real-time temperature and humidity. When the temperature rises due to power outage, the air conditioner will automatically start to control the temperature.
3. When there is an abnormality in the archive room, the on-site sound and light alarm device is triggered to achieve on-site sound and light alarm.
4. If there are any signs of fire in the archive room, the gas will trigger the smoke detector and trigger the smoke alarm.
5. When there is a power outage, call or send a text message to inform the administrator.
6. Real time monitoring of UPS working status (detecting the 220V power supply of the mains, the 220V output voltage of the UPS, and the battery pack voltage of the UPS) and inspection of the archive roomthree-phase electricityVarious parameters (such as phase voltage, current, power, frequency, etc.)
Equipment features:
1. Easy installation: Users only need to provide a mobile GSM card.
2. High reliability: pure hardware independent device, no need to modify or affect existing system equipment of customers.
3. Easy to set up: Phone number settings and other operations can be performed through phone or computer, with 2 numbers available.
4. Accurate and reliable alarm: The system is equipped with a CPU to process the temperature controller, which has strong anti-interference ability and no false alarms.
5. The device configuration is flexible and has good scalability: multiple input interfaces can be combined arbitrarily to add or remove functions at any time. The main surface is equipped with a temperature and humidity sensor, air conditioning high temperature self start, and can also be optionally equipped with sensors such as mains power outage alarm (optional), smoke detector (optional), water leakage (optional), UPS current and voltage (optional), etc., to achieve more environmental parameter monitoring.
6. Flexible and diverse alarm methods: on-site sound and light alarm (optional); Alarm method: Call+SMS alarm.
Technical features:
1. Adopting industrial grade 32-bit microcomputer chips, it has powerful functions, good stability, and strong anti-interference ability.
2. The hardware adopts an embedded real-time operating system internally.
3. RS485 data communication interface (RS485 interface uses ordinary twisted pair cables to transmit data, with a long communication distance of up to 1200 meters, strong anti-interference ability, and strong scalability, which can connect up to 128 devices using RS485 communication in parallel)
4temperatureThe sensor chip adopts imported digital temperature sensor model DS18B20, with an accuracy of 0.5 degrees
5. Infrared receiver/transmitter interface, equivalent to a learning type infrared remote control, can be used to control the air conditioning in the computer room (this system highly integrates the monitoring/control function of the computer room air conditioning, and will automatically turn on the air conditioning when the temperature is too high)
6. 4 input interfaces for switch quantity sensors (usually used to connect smoke sensors, water leakage sensors, door magnetic anti-theft sensors, etc.)
7. 4-channel 0-20mA/4-20mA industrial grade current loop interface (can be used to connect sensors with current loop output interfaces for temperature, humidity, voltage, current, speed, gas, dust, etc.)
8. Sound and light alarm output interface (relay output load capacity of 250V/7A, can connect various types of sound and light alarms to achieve on-site sound and light alarm function)
9. 1 programmable relay output terminal (relay output load capacity is 250V/7A, this output relay can be controlled by specified sensors through programming, for example, it can be set to output relay action to cut off the power supply of the computer room when the temperature exceeds the limit alarm)
Effectiveness of the plan:
1. After the circuit trips, the air conditioner automatically starts
2. Smoke appears in the equipment in the computer room
3. The high humidity in the computer room can cause circuit breakers and fires in the equipment inside.
4. The air conditioner is broken, causing an increase in temperature and damage to servers, switches, and network equipment
5. Equipment in server rooms, network control machines, and other computer rooms caught fire
6. Damaged telephone network equipment
7. Equipment damage caused by power outage in the computer room
Enterprise Value:
1. Reduce and avoid the loss of enterprise resources, resulting in unnecessary economic losses.
2. Reduce the workload of maintenance personnel in the unit archives and decrease the human resources of the enterprise.
3. Improve the level of enterprise information management.
4. The safe operation of digital archive equipment ensures uninterrupted network services provided by the unit both internally and externally.
5. Warning of enterprise fires and timely elimination of hidden dangers. Eliminate high temperature hazards before the fire protection system is activated.
Widespread implementation of the plan:
The implementation scope is wide, including warehouses (oil depots, gas depots, and other industrial bases), schools, banks (financial institutions), computer rooms, substations, governments (meteorological bureaus, public security bureaus, etc.), archives, greenhouses, etc.
Scheme system diagram
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