Alarm device and alarm system
First Claim
Patent Images
1. An alarm system that detects an abnormal condition within a monitoring area and outputs an alarm, comprising:
- an alarm device comprising;
a detection device which detects an occurrence of the abnormal condition;
a transmission device which transmits an alarm signal when the detection device detects the abnormal condition; and
an output device which, after the transmission device has transmitted the alarm signal, outputs the alarm after a lapse of a predetermined time after the transmission; and
a reception apparatus comprising a reception section which receives the alarm signal, and an output section which when the reception section receives the alarm signal, outputs the alarm at substantially the same time as reception of the alarm signal,wherein the predetermined time is set so as to be equivalent to the time taken from transmission of the alarm signal by the transmission device to reception of the alarm signal by the reception section.
1 Assignment
0 Petitions
Accused Products
Abstract
An alarm device includes: a detection device which detects an occurrence of an abnormal condition within a monitoring area; a transmission device which transmits an alarm signal when the detection device detects the abnormal condition; and an output device which, after the transmission device has transmitted the alarm signal, outputs an alarm after a lapse of a predetermined time after the transmission.
-
Citations
10 Claims
-
1. An alarm system that detects an abnormal condition within a monitoring area and outputs an alarm, comprising:
-
an alarm device comprising; a detection device which detects an occurrence of the abnormal condition; a transmission device which transmits an alarm signal when the detection device detects the abnormal condition; and an output device which, after the transmission device has transmitted the alarm signal, outputs the alarm after a lapse of a predetermined time after the transmission; and a reception apparatus comprising a reception section which receives the alarm signal, and an output section which when the reception section receives the alarm signal, outputs the alarm at substantially the same time as reception of the alarm signal, wherein the predetermined time is set so as to be equivalent to the time taken from transmission of the alarm signal by the transmission device to reception of the alarm signal by the reception section. - View Dependent Claims (2, 3, 4)
-
-
5. An alarm device comprising:
-
a reception circuit section which receives event signals from other alarm devices by performing intermittent reception behavior at a predetermined reception cycle; a transmission circuit section which transmits event signals to the other alarm devices for a transmission time whose duration is equal to or longer than the predetermined reception cycle; a sensor section which detects an abnormal condition; an alert section which outputs an alarm; an abnormal condition monitoring section which upon receiving an abnormal condition detection signal from the sensor section, outputs an abnormal condition alarm itself as a linkage source, and transmits an event signal indicating the abnormal condition to the other alarm devices, and on the other hand, upon receiving an event signal indicating the abnormal condition from one of the other alarm devices, outputs an abnormal condition alarm to the other alarm devices serving as a linkage destination; a preliminary abnormal condition detection section which detects a preliminary abnormal condition when the sensor section detects that the probability of an abnormal condition occurring is greater than a predetermined probability; and a preliminary abnormal condition monitoring section which, when the preliminary abnormal condition is detected, transmits an event signal indicating the preliminary abnormal condition to the other alarm devices, and on the other hand, upon receiving an event signal indicating the preliminary abnormal condition from one of the other alarm devices, either changes the reception cycle of the reception circuit section to a shorter cycle, or changes the reception behavior of the reception circuit section to constant reception. - View Dependent Claims (6, 7, 8, 9)
-
-
10. An alarm device comprising:
-
a reception circuit section which receives event signals from other alarm devices by performing intermittent reception behavior at a predetermined reception cycle; a transmission circuit section which transmits event signals to the other alarm devices for a transmission time equal to or longer than the predetermined reception cycle; a sensor section which detects an abnormal condition; an alert section which outputs an alarm; an abnormal condition monitoring section which upon receiving an abnormal condition detection signal from the sensor section, outputs an abnormal condition alarm itself as a linkage source, and transmits an event signal indicating the abnormal condition to the other alarm devices, and on the other hand, upon receiving an event signal indicating the abnormal condition from one of the other alarm devices, outputs an abnormal condition alarm to the other alarm devices serving as a linkage destination; and a reception cycle control section which, by a predetermined setting operation, changes a reception cycle of the reception circuit section to a shorter cycle than the predetermined cycle.
-
Specification