QL-SeismoAccel One
QL-SeismoAccel One is a professional-grade integrated seismic sensing system that combines a broadband triaxial seismometer and a force-balance triaxial accelerometer within a single compact instrument. Designed to capture the complete range of ground motion, the system enables accurate measurement of weak seismic signals as well as high-amplitude strong-motion events from one unified deployment point.
By integrating velocity and acceleration sensing technologies into one device, QL-SeismoAccel One simplifies installation, improves data coherence, and delivers reliable seismic performance for earthquake monitoring, research applications, and structural response analysis in both permanent and temporary field installations.
OVERVIEW
Description
QL-SeismoAccel One provides a complete and integrated solution for seismic monitoring. It combines two complementary sensing technologies into a single, unified instrument. The system integrates a broadband triaxial seismometer optimized for low-noise velocity measurements. Additionally, it includes a force-balance triaxial accelerometer designed for accurate strong-motion recording.
This dual-sensor architecture allows QL-SeismoAccel One to record the full spectrum of ground motion. It ranges from subtle ambient seismic noise to high-intensity acceleration during major seismic events. Weak ground motions critical for seismic analysis and research are captured with high resolution. Meanwhile, strong-motion events are recorded reliably without saturation or clipping.
All sensing elements are housed within a compact, field-ready enclosure that reduces system complexity. This design also eliminates the need for separate sensor alignment. The integrated design simplifies deployment and minimizes cabling requirements.
It ensures consistent data quality across all operating conditions. QL-SeismoAccel One is suitable for use in seismic monitoring networks, academic research projects, and infrastructure monitoring. It is also useful for temporary field campaigns where reliability, performance, and ease of deployment are essential.
Technical Overview
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Sensor Type: Integrated broadband seismometer with triaxial acceleration sensing
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Components: Three orthogonal sensing axes (3-component)
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Frequency Response: Broadband seismic and strong-motion frequency coverage
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Dynamic Range: Suitable for low-noise seismic monitoring and strong-motion recording
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Noise Performance: Low self-noise design optimized for high-resolution seismic monitoring
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Installation: Posthole, vault, or surface installation
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Operation Mode: Continuous monitoring
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Deployment: Permanent and temporary field installations
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Applications: Earthquake monitoring, strong-motion measurement, structural response analysis
Key Features
Dual Sensor Architecture
QL-SeismoAccel One integrates a broadband triaxial seismometer and a force-balance triaxial accelerometer into a single instrument. This combined architecture enables simultaneous recording of weak seismic signals and strong-motion events without compromising performance in either measurement range.
Complete Ground-Motion Coverage
The system captures the full range of seismic motion, from low-amplitude background vibrations to high-intensity acceleration during earthquakes. This ensures accurate and continuous data collection across a wide dynamic range, supporting both scientific analysis and operational monitoring.
Low Noise Performance for Weak Motion
The broadband seismometer section is optimized for low self-noise, enabling high-resolution recording of weak ground motions essential for seismic research, event detection, and long-term monitoring applications.
Reliable Strong-Motion Recording
The integrated force-balance accelerometer provides stable and accurate acceleration measurements during strong seismic events, ensuring that high-amplitude ground motion is recorded without clipping or loss of data integrity.
Compact and Robust Field Design
All sensing components are housed within a single compact enclosure designed for field deployment. The robust construction supports long-term operation in demanding environments while maintaining consistent measurement performance.
Simplified Installation and Deployment
By combining velocity and acceleration sensing into one device, QL-SeismoAccel One reduces installation complexity, eliminates alignment issues between separate sensors, and minimizes site preparation requirements.
Cost-Efficient System Integration
A single integrated instrument lowers overall system cost by reducing hardware requirements, installation time, and maintenance effort compared to traditional multi-sensor configurations.
Applications
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Earthquake and seismic network monitoring
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Strong-motion recording stations
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Structural and civil infrastructure response analysis
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Microseismic and site characterization studies
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Academic and geophysical research
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Permanent and temporary field deployments













