Force Measuring Devices for Building Seismic Vibration Tests

Abstract

The invention relates to a force measuring device for anti-seismic vibration testing of a building. The force measuring device comprises an acceleration sensor, a battery arranged around the acceleration sensor, and a circuit module group arranged inside the battery. At least one memory card is connected in the circuit module group detachably. The acceleration sensor is powered by the battery and is used for transmitting a measuring signal and storing the signal into the memory card of the circuit module group. According to the provided force measuring device, because the acceleration sensor, the power supply, and the memory card for storing testing data are combined into one structural component operating independently, cables like a power line and a data line that extend outwardly can be saved, the damages on structure sealing by the cable exits can be avoided, and additional weights are reduced; configuration of expensive multi-path data collection equipment and configuration of an external power adapter are not required; debugging work like impedance matching on the scene is not needed; after data collection, the memory card is removed and then a common card reader is needed, so that lots of money and time can be saved.

Description

technical field [0001] The invention relates to a detection device used in the anti-seismic vibration test of a building, in particular to a test device used in the anti-seismic vibration test of a building to detect the force of the structural components of the building in the process of simulating the seismic vibration. force device. Background technique [0002] Earthquake is a sudden natural disaster. A destructive earthquake often causes very serious economic losses and casualties in a very short period of time. Governments of various countries have taken active and effective measures to reduce earthquake disasters. In earthquakes, damaged or collapsed buildings are the main cause of heavy casualties. Due to the huge destructive effect of earthquakes, many countries, especially earthquake-prone countries, have invested huge manpower and material resources to carry out earthquake-resistant research on buildings such as houses, bridges, elevated highways, and nuclear pow...

AI Technical Summary

Problems solved by technology

In particular, the buildings in the test process are usually reduced models, and their weight is not large, but the force measuring device is installed on its local structural components, and the additional weight is already close to the weight of the local structural components of the tested building. , it will obviously affect the vibration condition of its local structural components, which may cause test errors

[0005] In addition, during the building destruction test, additional data cables, power cables and other cables are wound on the surface of the structural components, which will restrict the damaged structural components from the main body of the building and interfere with the accuracy of the measurement results

Therefore, it often takes a lot of labor to design the layout of cables during the test, but the accidental influence of cables on the measurement results is still unavoidable

[0006] Moreover, with the increase of the additional weight brought by the cable, it is also necessary to consider the influence of the resonance frequency of the entire test device on the test results. The excessive weight limits the force measuring device to be connected to the building by rigid screws to ensure Connection strength, it is difficult to flexibly adjust the frequency of use to avoid interference

[0007] In addition, additional cables need to be provided with additional cable outlets on the force measuring device, which destroys the sealing of the structure, is not conducive to waterproof, high temperature resistance, and electromagnetic interference, and affects the sensitivity and accuracy of the force measuring device.

more importantly, figure 1 The force-measuring device shown in this existing method requires impedance matching with the data acquisition device connected to it to eliminate signal interference, which often requires an additional constant-current adapter for the force-measuring device, or a stable power supply provided by the data acquisition device. It even needs to be equipped with dual power supply, which undoubtedly increases the equipment cost a lot, and also requires a lot of on-site debugging work, which is time-consuming, laborious and expensive, and very inconvenient

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