| 摘要 |
<p>Disclosed is a portable alarm apparatus (10) comprising an adhesive suction mechanism (12), a device (3) for monitoring the suction pressure, a device for generating a negative pressure (2), which is connected to the adhesive suction mechanism (12) and maintains the negative pressure in the adhesive suction mechanism (12) substantially constant at a preset value, and an alarm control device (21) that generates an alarm signal when the suction pressure falls below a predetermined threshold value when the preset negative pressure can no longer be maintained.</p> |
