Electromagnetic Shielded Room is a laboratory with electromagnetic shielding function，It can provide a basic environment for the use of EEG and eye trackers。Shandong University electromagnetic shielding room has both magnetic shielding and sound insulation functions，Constructed by Beijing Keok Acoustic Technology Co., Ltd.。

1. Introduction

Electromagnetic shielding room built in 2020，Located in Room 517, Block A, Zhixin Building，Occupied area 12.13 m2。

2. Building structure

Bet365 gamesThe electromagnetic shielding room is mainly made of shielding cloth、Shielded soundproof door、Honeycomb Waveguide Window、Filter、Ground、Sound insulation-sound absorption structure、Vibration isolation structure and ventilation and lighting system composition，Including control room and collection room，Used to measure cable penetration through embedded PVC pipes，Both ends of the pipe are sealed with special sound insulation end caps。The control room is used to place the main test equipment，Can monitor the entire experimental process；The collection room is used to collect subject data。Conversation between the experimenter and the subject through the monitoring system。

3. Shielding and sound insulation system

Using a "room within bet365 games best slotsa room" structure。Both interior and exterior suites use metal sound insulation and sound absorption modules，There is an electromagnetic shielding layer sealed by copper-nickel conductive polyester-based non-woven fabric between the inner metal perforated sound-absorbing panel and the inner soundproof room。Install vibration isolation pads at the lower part of the soundproof suite，The ground is made of shielding cloth with a decorative layer。

Screened soundproof doors: one for each inner and outer suite，Dual-channel magnetic seal，Double-layer copper combs on both sides and top of the door frame and door leaf，The bottom of the door frame and door leaf is made of copper tape，Sound isolation is 43 dB。

Ground wire: Dig 4 to 5 deep pits of 2 to 3 bet365 slotsmeters outdoors，Buried conductive electrode，And connect the ground wire to the wiring port through the ground wire collection body and alloy wire。

IV. Ventilation and lighting

Ventilation: The ventilation duct is one in and one out，The air inlet and outlet are located at the top of the room，Install one set of mufflers each，A honeycomb waveguide window is installed at the internal air outlet。Install another fan，Used for air circulation between the collection room and the control room。

Lighting: using cold light source energy-saving lamps，Install power filter，The switch is located in the collection room。

5. Evaluation indicators

Tested by third-party agencies，No signal from communication equipment in Bet365 gamesThe electromagnetic shielding room of Shandong bet365 online betting appUniversity，The noise floor is less than or equal to 7.2 dB (ventilation system off)，Reverberation time is 0.13 seconds (100~10kHz)，The latter two technical indicators are better than existing international standards。