Structural health monitoring system by ZETLAB
Structural health monitoring system can be used at any types of engineering structures: high structures, dams, and dikes, bridges, tunnels, large sports facilities, dilapidated structures, etc.
Structural health monitoring system by ZETLAB
Automated control at various points of the facilities in the course of their construction and use, detection of the controlled parameters non-conformance with the set threshold values
Structural health monitoring system by ZETLAB
ZETLAB Company is ready to provide you with a turn-key system, design and working documentation, installation supervision, start-up and commissioning works.

Structural health monitoring system

Automated stationary structural health monitoring system (SHM) is a subsystem of buildings and structures control system which has been developed in accordance with the applicable requirements of the corresponding standards. It is used to detect a transition of the building state from operational into the state of failure, that may eventually lead to fatal accidents.

Structural health monitoring system (SHM) allows to timely detect ground base bearing capacity change as well as to reveal changes of structural elements and to inform the monitoring service of critical changes in the bearing structures parameters.

Leaflet in PDF format “Structural health monitoring system (SHM)”

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Structural Health Monitoring system is a set of subsystems that are used for the controlled parameters monitoring in real-time mode.

Depending on Customer’s requirements, the Structural Health Monitoring System may include all types of the monitoring systems or a particular task-specific set of the monitoring systems.

The number of the control points depends on the structure of a particular facility, thus, these parameters are calculated in the course of system development based on the design documentation.

Along with large-scale distributed monitoring systems for industrial facilities, there also exists a basic configuration of SHM kit, which includes:

digital three-axial accelerometer ZET 7152-N
digital three-axial seismometer ZET 7156
digital strain-gauge sensor ZET 7110-DS
digital inclinometer ZET 7154
interface converter ZET 7176
leak-proof casing for industrial use of interface converter

Basic package of structural health monitoring system (also referred to as SHM basic package) is a user-friendly, compact and comprehensive system for buildings diagnostics. Structural health monitoring system basic package price: from 6 160 USD

More details

Basic package of the structural health monitoring system can also be used as a portable system for periodical short-term measurements of the following parameters:

monitoring and evaluation of acceleration and vibration level;
basic modes and damping ratios calculation;
structural elements relative deformation control.

Portable bridge structures control system by ZETLAB is a portable recorder and a set of intelligent digital sensors to be mounted on the controlled structural elements and ZETLAB Software package to be used for processing and analysis of the accumulated data.

Task-specific suites

The task-specific suites are developed for addressing the tasks implying the necessity of certain parameters control or an independent power supply source:

Seimic detection system for elevators
Protection from the risk related to the use of elevators in seismic-hazard areas

Portable structural health monitoring system
Periodical check of structures bearing capacity, selecting the location for digital sensors mounting

Eco-friendly technologies
Solar energy conversion

Information for project engineers

The SHM has a hierarchical structure and has the following components: digital sensors, data acquisition modules placed inside of electrical cabinets, information computation system components.

System components and controlled parameters
Requirements for software and hardware components of SHM system
Development of measuring lines
Rules for selecting cable types and measuring line length
System components selection and mouting guide
Basic recommendations relating to selection and mounting of system components on the controlled object

Selection of the required cable type to be used for measuring lines should be based on the total length of the measuring line, power supply source used and the number of digital transducers in the measuring line. You can use the calculator below to simplify the design process.

Basic computational data for selection of cable type and power supply voltage
Admissible value of the measuring line cable volume resistivity (max), Ohm/km
Admissible cable class for the measuring line (max)
Measuring line cable conductor diameter (min), mm
Measuring line cable conductor cross-section (min), mm².
Required measuring line power supply level (not less than), W

Additional computational data
Total power of the transducers in the measuing line, W
Voltage at the far end of the measuring line, V
Current level in the electrical feed circuit of the measuring line, A
Overall circuits resistance (Upow+GND), Ohm
Resistance of feed circuit conductor, Ohm

AWG	Diameter, mm	Cross-section area, mm²	Resistance per unit length, Ohm/km	Weight per unit length kg/km
4	5.189	21.15	0.815	188
6	4.115	13.3	1.297	118.2
8	3.264	8.37	2.061	74.38
10	2.588	5.26	3.277	46.77
11	2.304	4.17	4.134	35.05
12	2.052	3.31	5.217	29.46
13	1.829	2.626	5.562	23.36
14	1.628	2.084	8.268	18.45
15	1.45	1.652	10.43	14.69
16	1.29	1.309	13.19	11.62
17	1.151	1.039	16.57	9.24
18	1.024	0.826	20.96	7.32
19	0.912	0.652	26.41	5.8
20	0.813	0.519	33.14	4.61
21	0.724	0.412	41.99	3.66
22	0.643	0.325	53.15	2.89
23	0.574	0.259	66.6	2.31
24	0.511	0.205	84.32	1.82
25	0.455	0.163	106.3	1.44
26	0.404	0.128	134.5	1.14
27	0.361	0.102	168.8	0.91
28	0.32	0.081	214.2	0.72
29	0.287	0.065	266.4	0.58
30	0.254	0.051	341.2	0.45
31	0.226	0.04	427	0.359
32	0.203	0.032	538	0.238
33	0.18	0.025	679	0.226
34	0.16	0.02	856	0.179
35	0.142	0.016	1086	0.142
36	0.127	0.013	1361	0.113

Should you have any difficulties with selecting necessary components for your system, fill in the questionnaire and send it to zetlab@zetlab.com. Our specialists will assist you in selecting the necessary system components for your particular task.

Questionnaire

Cloud monitoring technologies

ZETLAB Company has developed a data server used for storage, calculation, and processing of the measurement results received from the controlled facility with further data transfer to the customer.

When developing a monitoring system used for control of various facilities using ZETLAB measuring instruments, the Customer can select a channel for data transfer from the measuring lines to the data server.

More details

Information for project integration managers

Structural health monitoring system can be used in standalone mode or be integrated into an already existing monitoring system.

Among the additional advantages of the SHM system, one should mention the possibility of integrating third-party transducers into the structure of measuring lines.

System integration without standard software
“Raw” data transfer (without preliminary processing) from digital sensors to third-party systems
System integration with standard software
Final values (processed data) transfer options from digital sensors to third-party systems
Supported hardware of third-party manufacturers
List of devices that can be integrated into ZETLAB SHM system

Portfolio

Configuration of measuring line requirements
Measuring line: power supply voltage, V
Total length of the measuring line, m
Measuring line: number of transducers, pcs

Parameters, that are not subject to change
ZET7xxx transducer power, W	0.5
Admissible decrease of power supply voltage at the end of measuring line	20%