▼Smart manhole cover production line
In order to adapt to the new situation of increasing the market production demand for smart manhole cover sensors in the "smart manhole cover" management system, Gundam Technology Company quickly built a smart manhole cover sensor assembly line in a short period of time, and also purchased supporting equipment accordingly to meet production needs.
▼Smart manhole cover system architecture diagram
>Internet of Things
Digital output module is developed based on IEC61131-2 standard for industrial field digital control signal output, and is widely used in valve switch, pump/motor start and stop, control master command output, etc. It is combined with AQ module, AI module, DI module, ProfINet network module to form a distributed slave station to realize signal acquisition and control output of instruments, meters and equipment in industrial automation system.
> Wisdom
The smart manhole cover detection system realizes the intelligent maintenance of the manhole covers of the city's underground pipe network. By installing a set of detection devices on the existing manhole covers, the detection device sends the manhole cover information wirelessly at regular intervals. The monitoring center can timely understand the manhole cover status in the jurisdiction through the Internet platform or mobile phone APP, and carry out municipal maintenance in time to ensure that no manhole cover failures occur.
Safety accidents caused.
> Share
The smart urban management system builds four major mobile and client systems, including mobile inspection APP, data supervision center, archive center, and public account. It provides a platform for responsible personnel, supervisors, and the people to jointly build and supervise the city. It provides convenient life services for the people through multiple channels and methods.
▼Core Sensor
▼Sensor-Technical Features
◆ One sensor, multiple abnormal status monitoring;
◆ Unmanned operation, remote intelligent real-time accurate alarm;
◆ Low-power battery power supply, battery life is 3 years, maintenance-free;
◆ Easy and simple installation, both new and old manhole covers can be installed;
◆ NB-IOT wireless communication technology for the Internet of Things and cloud data interaction;
◆ The system can be expanded to include water level detection, flow (velocity) detection, and gas detection.
▼Manhole cover IoT sensor-----Measurement principle
(1) Detection of lost manhole cover: By installing RFID-based wireless radio frequency sensors on the back of the manhole cover and the wall of the manhole, when the manhole cover is opened or moved manually, the internal sensing signal is lost, the system sends out an alarm signal and records the time of loss.
(2) Detection of manhole cover tilt, subsidence or damage: By installing an integrated tilt sensor on the back of the manhole cover, once the tilt sensor detects a change in angle, an alarm message is issued and the alarm time is recorded.
(3) Water immersion detection: Through the built-in capacitive induction sensor, when the sensor housing is immersed in water, the circuit resistance changes beyond the normal value, a water immersion alarm is issued, and the event is recorded.
(4) Gas or manhole water detection: The sensor can be connected to an external response detection sensor to achieve specific target detection.
▼Manhole cover IoT sensor-----seven major integrations
The seven major integrations of manhole cover IoT sensors include lithium battery, tilt sensor, water immersion sensor, temperature sensor, telecom NB-IOT IoT card, fragmentation sensor, embedded integrated circuit + intelligent software. According to different functional requirements, we can also choose (liquid level, flow rate, gas) and other extended sensors.
▼Manhole cover IoT sensor-----Eight advantages
The eight advantages of manhole cover IoT sensors: ultra-low power consumption, automatic inspection, timely reporting, maintenance-free, real-time alarm, accurate detection, multi-purpose use, and easy installation.
▼Manhole cover IoT sensor-----Nine features
◆ APP reminder: Maintenance personnel will receive timely warnings via mobile APP if there are any abnormalities in the manhole cover.
◆ Alarm inspection: Alarm information is forwarded to inspection personnel, who deal with the situation on site and send back photos of the scene.
◆ Maintenance settings: Set the maintenance time and maintenance personnel of the manhole cover, and record the maintenance status.
◆ Map display: The electronic map shows the manhole cover location, basic information, and real-time status.
◆ Alarm positioning: real-time transmission of alarms, alarm highlighting coordinate positioning, and alarm synchronization SMS sending.
◆ Status monitoring: real-time monitoring of manhole cover status.
◆ Manhole cover management: management of manhole cover number, longitude and latitude coordinates, and road area information.
◆ Alarm handling: dispatching work orders, on-site maintenance, alarm clearing, alarm logs, and storage database management.
◆ Text display: Displays the manhole cover location, basic information, real-time status, and historical records.
▼Manhole cover IoT sensor-----Ten indicators
◆ Data transmission method: NB-IOT
◆ Frequency range: 800/900/1800MHz
◆ Angle detection accuracy: ±2°
◆ Battery life: >5 years
◆ Abnormal reporting time limit:<1分钟
◆ Voltage range: 2.8-3.6V
◆ Static operating current: 18-20uA
◆ Transmitting power: 0-20dbm, adjustable
◆ Anti-corrosion: Salt spray test
◆ Application environment: IP68/-20-60℃
