Security monitoring system
First Claim
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1. A security monitoring system, comprising:
- (a) at least one radio transmitter which includes an alarm information transmission apparatus for transmitting alarm information as a radio signal;
(b) said radio transmitter further including(1) a test signal transmitting means for transmitting test signals at one of a first amplitude level and a second lower amplitude level, and(2) a manually operable setting means for setting a transmission level for transmitting said test signals at said second amplitude level;
(c) a processing apparatus having an alarm unit for receiving the alarm information transmitted from said radio transmitter to carry out alarm processing in accordance with the contents of the alarm information; and
(d) said processing apparatus including a first detecting means for detecting whether or not the system operates reliably by receiving the test signals having the second amplitude level.
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Abstract
A security monitoring system includes a radio transmitter which transmits information by a radio signal and a processing apparatus which receives the information transmitted by the radio transmitter to give necessary processing depending upon the contents of the information. The radio transmitter has a testing signal transmission means for transmitting testing signals and a setting means for setting the transmission level in transmitting the testing signal to the lowest operating level to provide a simulated worst-case testing environment.
186 Citations
20 Claims
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1. A security monitoring system, comprising:
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(a) at least one radio transmitter which includes an alarm information transmission apparatus for transmitting alarm information as a radio signal; (b) said radio transmitter further including (1) a test signal transmitting means for transmitting test signals at one of a first amplitude level and a second lower amplitude level, and (2) a manually operable setting means for setting a transmission level for transmitting said test signals at said second amplitude level; (c) a processing apparatus having an alarm unit for receiving the alarm information transmitted from said radio transmitter to carry out alarm processing in accordance with the contents of the alarm information; and (d) said processing apparatus including a first detecting means for detecting whether or not the system operates reliably by receiving the test signals having the second amplitude level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A security monitoring system, comprising:
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(a) at least one radio transmitter comprising, an alarm information transmission apparatus for transmitting an alarm information by radio signals by sensing an alarm situation, a test signal transmitting means for transmitting a test signal having one of a first amplitude level and a second lower amplitude level, a setting means for setting a transmission level during the transmission of said test signals at the second amplitude level, and an operation checking means for automatically transmitting operation checking signals which indicate normal operation of the transmitter itself, at a fixed interval of time; and (b) a processing apparatus comprising, an alarm unit for receiving said alarm information transmitted from said radio transmitter, and carrying out alarm processing in accordance with the alarm information, a first detection means for receiving the test signals set at the second amp1itude level that are sent from the test signal transmitting means to detect whether or not the system operates reliably, and a second detection means for detecting whether or not said operation checking signals are transmitted from said radio transmitter.
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13. A security monitoring system comprising:
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(a) at least one radio transmitter for transmitting one of a normal transmission level detection information radio signal in response to a sensor signal indicative of an abnormal event, and a low transmission level test detection information radio signal; (b) a test switch; (c) means for generating a test signal when said test switch is closed; (d) means for lowering the transmission level of said normal transmission level detection information radio signal to a predetermined low transmission level, thereby generating said low transmission level test detection information radio signal in response to the test signal, to test whether said processing apparatus can receive the test detection information signal transmitted at the low transmission level; and (e) a processing apparatus for receiving the test and normal transmitted detection information radio signal, identifying the received detection information signal, and outputting the identified detection information signal for activating an alarm. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification