초록 ▼

A temperature alarm system includes a temperature sensing module and an alarm circuit that are powered by a photocell and a battery that is charged by the photocell. The photocell normally provides enough power to operate the system and charge the battery. When the temperature sensing module senses

A temperature alarm system includes a temperature sensing module and an alarm circuit that are powered by a photocell and a battery that is charged by the photocell. The photocell normally provides enough power to operate the system and charge the battery. When the temperature sensing module senses a temperature that exceeds a predetermined alarm limit, it generates an alarm signal which activates an alarm circuit that generates a visual and/or audible alarm either immediately after the alarm signal is generated, or after the alarm signal has been generated for a period of time. The generation of the alarm signal and/or the alarm causes the system power consumption to increase, so the system begins to draw power from the battery. After the alarm condition is corrected, the system returns to normal power consumption, and the photocell provides enough power to operate the system and charge the battery.

대표청구항 ▼

[ I claim all modifications and variations coming within the spirit and scope of the following claims:] [1.] An easy-to-install temperature alarm system comprising:a temperature sensing module that generates an alarm signal when it senses a predetermined temperature;a temperature sensing device coup

[ I claim all modifications and variations coming within the spirit and scope of the following claims:] [1.] An easy-to-install temperature alarm system comprising:a temperature sensing module that generates an alarm signal when it senses a predetermined temperature;a temperature sensing device coupled to the temperature sensing module through a cable, whereby the temperature sensing device can be positioned in a monitored space remote from the temperature sensing module;an alarm coupled to the temperature sensing module for receiving the alarm signal, the alarm generating a warning responsive to the alarm signal;a photocell coupled to the temperature sensing module for providing electric power to the module;a housing;a first battery coupled to the temperature sensing module to provide a first power supply voltage to the temperature sensing module; anda second battery connected in series with the first battery, and coupled to the alarm to provide a second power supply voltage to the alarm;wherein the temperature sensing module, the alarm, and the photocell are disposed within the housing to provide a compact, self-contained unit that can be mounted in a convenient, occupied location, thereby eliminating power supply wiring and simplifying installation.