2016/10/18

Bed Exit Sensor With Wireless Remote Alarm Receiver

Note, for the Chinese translation of this post, please visit the link below (點下面的Link看中文翻譯) - http://wei48221.blogspot.tw/2016/10/bed-exit-sensor-with-wireless-remote_18.html.




Feature Description:
The system detects bed exit and wirelessly transmits bed exit alarm to a remote receiver. Upon receipt of the bed exit alarm, the remote receiver gives out warning in the form of light indicator and warning tone. To avoid disturbing the person receiving care, the system located at the care recepient’s site only gives out warning in the form of light indicator.

The person receiving care doesn't need to wear any equipment and the bed doesn't need to have any kind of sensing pad on it.

Wireless Link Lost Detection:
The system is equipped with wireless link lost detection function. In the event of wireless link lost or the system at the care recepient’s site is powered off, the remote receiver will give out alarm in the form of light indicator and warning tone.

Input Power:
This system draws its power from the main power supply (using AC110 ~ 220V to DC 9 ~ 12V adaptor). In the event of main power outage, the system can be powered by DC9V battery (see photo below).



Wireless Transmission Distance:

The max. distance between the Base Station and the Remote Receiver is about 50 meters (~164 feets) in an open and unobstructed environment. In a typical reinforced concrete building, it has been tested that the Base Station and Remote Receiver could communicate properly when they are separated by 1 to 2 floors (2 concrete floors or walls) (note: the wireless transmission distance may be greater or shorter depending on the material in the wall or floor and other environmental factors).

The maximum distance between the Bed Exit Sensor and the Base Station is approximately 8 meters (~26 feets).

Description of System Components

Bed Exit Sensor x 4


It’s placed on the floor next to the bed to detect bed exit.

Base Station x 1

It powers the Bed Exit Sensors and relays bed exit alarm to the Remote Receiver wirelessly.

Remote Receiver x 1


It monitors wireless link status and bed exit alarm and gives out alarm in the form of light indicator and warning tone.

How to use the system

1.  Connect the Bed Exit Sensors to the Base Station using the RJ-11 cables provided. (note, when using RJ-11 cable from other source, be sure that it’s a 2-pair, crossed-over cable with cable length less than 8 meters (~26 feets)) ;

2.  Place the Bed Exit Sensor on the floor near the bed with the face that has 2 round holes facing the far end of the bed (see below disgram). The effective range of the Bed Exit Sensor is about 2.5 ~ 3 meters (less than 9 feets) (the distance from the holes to the bottom of the dashed triangle), the detection angle is around 30 degrees (the angle at the top of the dashed triangle).



Note,
·     The unused sensor may be placed next to another sensor to increase the coverage area (as shown above on the right);

·     The unused sensor may be placed on a bedside table to serve as a wireless bell for calling for help (the sensor can be triggered by blocking the 2 round holes with hand or other object).
  
Alternatively, the extra sensor can be place next to the bed room door to sense the opening of the door and send out the alarm..


3.  Power on the Base Station (note, please make sure that no one is standing in the detection range). When the Base Station is powered on, its green indicator light will flash ten times (note, the system is calibrating itself during this time). And the red indicator light will be steadily on (note, this indicates that the wireless link with the Remote Receiver is lost).

Note, it is recommended that the Base Station and Remote Receiver be powered off / powered to re-calibrate the system everytime after the care recepient gets in the bed (because the objects within the detection range may have been changed since the last calibration).

4.  Power on the Remote Receiver. The Remote Receiver may generate warning tone and the red indicator light may be on constantly (note, this indicates that the wireless link between the Base Station and the Remote Receiver is lost). If the wireless link is alive, the warning tone will stop and the red indicator light will start flashing within 10 to 20 seconds automatically (at about once every five seconds). 

If the warning tone doesn’t stop or the red indicator light remains on for more than 20 seconds, please refer to the below flow chart for simple troubleshooting.

What to do when the Link Lost indicator on the Remote Receiver doesn’t stop for more than 20 seconds


5.  When Bed Exit Sensor is triggered, the green indicator light on the Base Station will be turned on. At the same time, the warning tone and the green indicator light on the Remote Receiver will be turned on as well. In the event that the Bed Exit Sensor is not triggered again, the warning tone will stop within 10 seconds but the green indicator light will remain on until the reset button on the Remote Receiver is depressed and released. When the reset button is depressed and released, the green indicator on the Remote Receiver will be turned off and the green indicator light on the Base Station will also be turned off within 5 to 10 seconds.

Description of system components

Bed Exit Sensor


Base Station




Remote Receiver


Demo Videos

Powering Up the Base Station 



Link Alive Indication & Sensor Triggered Indication 


Link Lost Indication And Auto Recovery From Link Lost



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