Circuit monitoring device
OwnerEric Bullmoreinventor
Life of this patent
Estimating the term…
Abstract
The circuit monitoring device is disclosed. The device is for monitoring circuit resistance. At configurable thresholds digital flags are triggered, the device can be used as a Security/Building management system. The device uses open technology is fully scaleable and allows programmable logic controllers to be used as security management systems. Using a soft logic option a PC could take the place of the PLC.
Claims24
A method of monitoring the status of a measurable parameter of an electrical circuit, including the steps of:
- measuring the magnitude of said parameter and generating an analog signal representative of said magnitude;
- passing said analog signal to an analog to digital converter;
- generating by the analog to digital converter a count value representative of said magnitude;
- comparing said count value with a threshold value and assigning from the comparison a status signal, said status signal having two possible values which thereby indicates whether the count value is greater than or less than said threshold value;
- transmitting said status signal via a communications network to a display;
- and
- displaying on the display an indication of the value of the status signal.
Apparatus for monitoring the status of a measurable parameter of an electrical circuit, the apparatus comprising:
- measurement means for measuring the magnitude of said parameter and generating an
- analog signal representative of said magnitude;
- analog to digital conversion means for generating from said analog signal a count value representative of said magnitude;
- comparison means for comparing said count value with a threshold value and generating from the comparison a status signal, said status signal having two possible values which thereby indicates whether the count value is greater than or less than said threshold value;
- transmission means for transmitting said status signal via a communications network to a display;
- and
- display means for displaying an indication of said assigned status.
A building security management system comprising:
- an electrical circuit containing a switchable element, the circuit including a first resistive component in series with the switchable element and a second resistive component in parallel with the switchable element such that the status of the switchable element is reflected in the electrical resistance of the circuit;
- measurement means for measuring said resistance of the circuit and generating an analog signal representative of said resistance;
- comparison means for comparing said count value with a threshold value and generating from the comparison a status signal, said status signal having two possible values which thereby indicates whether the count value is greater than or less than said threshold value;
- transmissidn means for transmitting said status signal via a communications network to a display;
- and
- display means for displaying an indication of said assigned status and is thus of said switchable element.
Dependencies are inferred from the claim text.