When　compared　to　wired　sensor　technology,　wireless　sensor　technology　often　suffers　long　data　collection　delay,　big　noise　floor　and　data　loss.　Addressing　these　challenges,　a　wireless　data　acquisition　system　was　designed　and　implemented　by　the　authors.　It　can　provide　a　performance　comparable　to　the　one　of　a　wired　data　acquisition　system.　In　this　paper,　the　system　is　validated　by　its　application　in　the　monitoring　of　a　timber　pedestrian　bridge　in　Italy.　The　system　features　flexible　sensor　interfaces,　high　power　efficiency,　low　noise　data　acquisition,　real-time　and　lossless　wireless　data　transmission,　and　a　convenient　graphical　user　interface.　Two　field　experiments　were　conducted.　In　the　first　experiment,　the　wireless　data　acquisition　unit　was　designed　to　use　an　unreliable　communication　mode,　resulting　in　an　underestimated　data　loss　problem.　In　the　second　experiment,　the　system　is　improved.　The　ACK-RETRIES　reliable　communication　mode　and　a　data　packet　sequence　number　checking　mechanism　are　adopted,　so　that　the　data　loss　was　avoided.　For　a　comparison,　a　wired　portable　data　acquisition　system　VSS-3000　was　also　used　to　acquire　data　from　one　accelerometer.　The　results　show　that　the　wireless　data　acquisition　system　is　able　to　acquire　high　quality　data　from　low　noise　sensors　in　real　time　without　data　loss.　Compared　to　the　VSS-3000,　the　data　acquired　by　the　wireless　sensor　platform　have　a　comparable　and　even　better　quality.