Product Details

1 Product Overview

DAQ-LP-TVNB tilt & vibration sensor is an intelligent monitoring device launched by Shanghai DAQ IoT Technology Co., Ltd., specially designed for bridges, viaducts, roads and buildings. It adopts NB-IoT technology and integrates core functions such as vibration monitoring and online warning, enabling real-time monitoring of safety status and timely detection of abnormal events such as damage and collision with alarms triggered, providing round-the-clock, all-dimensional intelligent protection for infrastructure safety.

It is suitable for all displacement measurement needs of bridges, viaducts, roads and buildings, and can be widely used in the safety monitoring of infrastructure such as municipal transportation, expressways and bridges/tunnels/buildings.

3 Core Advantages

Extreme environmental adaptability: supports wide-temperature operation from -40℃ to +80℃, with IP67 high protection rating, adapting to various harsh weather conditions;

Low power consumption and long endurance: powered by a 6000mAh lithium-thionyl chloride battery, with an annual self-discharge rate of ≤2% and a design service life of ≥3 years;

Intelligent and precise monitoring: false alarm rate below 1%, with adaptive learning that optimizes the monitoring algorithm according to the actual scenario;

Fast alarm response: abnormal events are reported in real time, and it supports linkage with information boards and public address systems for intuitive warning effects.

4 Technical Parameters

4.1 Basic Parameters

Parameter category	Specific specification
Ambient temperature	Operating temperature: -40℃ ~ +80℃; storage temperature: -55℃ ~ +85℃
Relative humidity	0 ~ 90% RH (at 20℃, non-condensing); 5% ~ 100% RH (operating)
Device dimensions	55mm × 120mm × 75mm
Device weight	≤0.5KG
Protection rating	IP67
Power supply	Primary lithium-thionyl chloride battery (3.6V)
Battery capacity	6000mAh
Max. continuous discharge current	≥500mA
Max. pulse discharge current	≥1000mA
Power consumption level	Whole device ≤50uA; vibration monitoring module ≤10uA; typical current in PSM mode 3.5μA

4.2 Monitoring Performance Parameters

Monitoring item	Technical specification
Vibration acceleration range	±2g
Vibration frequency range	12.5Hz ~ 6.66KHz
Vibration monitoring communication	Interrupt-triggered mode, I2C interface communication
False alarm rate	Below 1%

4.3 Communication Parameters

Communication category	Specific specification
Transmission mode	NB-IoT (compliant with the “NB-IoT Industry Application Specification Guide”)
Communication band	B1/2*/3/4*/5/8/12*/13*/17*/18*/19*/20/25*/26*/28*/66*
Transmit power	23±2dBm (max)
Network protocol	MQTT
Serial baud rate	4800-921600bps (default 115200bps)
USIM interface	eSIM card supported
USB interface	Compliant with USB1.1, max transfer rate 12Mbps

4.4 Main Control Parameters

Main control item	Technical specification
Main control clock frequency	≥108MHz (independent main control)
Core configuration	ARM® 32-bit Cortex®-M4
Program storage	256kB + 64kB
ADC resolution	12bit
Operating supply voltage	1.8V ~ 3.63V

5 Core Functions

5.1 Online Monitoring

The device supports 24-hour online monitoring and actively uploads monitoring data via the NB-IoT network. Users can view device working status, battery level, monitoring data and other information in real time on the backend. The heartbeat reporting frequency is independently configurable (adjustable from 5-9999 minutes) to meet the monitoring needs of different scenarios.

5.2 Alarm Function

It has special vibration monitoring capability. When abnormal vibration such as guardrail damage or collision is detected, the device automatically wakes up and triggers an alarm. The alarm signal is uploaded to the management platform in real time via the NB-IoT network, ensuring staff obtain abnormal information at the earliest opportunity.

5.3 Warning Function

During an abnormal alarm, the device’s built-in warning light flashes; it can also be linked with optional information boards and public address systems for both visual and audible warning, effectively deterring destructive behavior. The backend supports configuring the warning light flashing within an authorized time period, improving warning flexibility.

6 Notes

Installation must comply with relevant standards such as the “Code for Design of Urban Roads” and the “Code for Construction and Acceptance of Electrical Installation Engineering”;

Do not dismantle the device housing without authorization; otherwise the warranty is voided and the device may be damaged;

Avoid installing the device in strong magnetic fields, near high-temperature heat sources or in chemically corrosive environments;

When replacing the battery, use a lithium-thionyl chloride battery of the same specification; never mix different battery types;

During use, comply with the relevant national radio communication management regulations and do not modify communication parameters without authorization;

During the warranty period, non-human-caused faults qualify for free repair or replacement (the warranty period is subject to the product certificate).