# US 8,786,451 B2 ยท Leak detection system having power and communication lines > Agents: this data is available as JSON from the patentgrep API and MCP server โ€” see https://patentgrep.com/llms.txt - Number: US 8,786,451 B2 - Document ID: US8786451B2 - Status: Granted - Kind: B2 - Application number: 13/196,347 - Filed: 2011-08-02 - Published: 2012-02-09 - Granted: 2014-07-22 - Earliest claimed: 2010-08-06 - Assignees: Chang Sung Ace Co., Ltd. - Applicants: Yeu Yong Lee - Inventors: Yeu Yong Lee - Web page: https://patentgrep.com/patent/US8786451B2 ## CPC - G01M 3/165: {by means of cables or similar elongated devices, e.g. tapes} - G08B 13/2497: {using transmission lines, e.g. cable} - Y10T 137/5762: With leakage or drip collecting - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A leak detection system having power and communication lines includes a leak sensing cable having sensor lines for sensing a leak, detection controllers connected to the sensor lines to detect a leak position signal, and a master controller receiving the detected leak position signal from the detection controllers, wherein the leak sensing cable includes power and communication lines that are wired to supply power to the detection controllers via the master controller and to transmit the leak position signal to the master controller from the detection controllers. According to this invention, the leak detection system has power and communication lines that are able to transmit the leak position signal between the detection controllers and the master controller while supplying power to the detection controllers and the master controller. ## Claims ### Claim 1 A leak detection system having power and communication lines, comprising a leak sensing cable having sensor lines for sensing a leak, at least one detection controller connected to the sensor lines to detect a leak position signal, and a master controller receiving the detected leak position signal from the detection controller, wherein the leak sensing cable includes the power and communication lines that are wired to supply power to the detection controller via the master controller and to transmit the leak position signal from the detection controller to the master controller, and a computer for storing the leak position signal received by the master controller and displaying it on a monitor is provided, wherein the power and communication lines are embedded in the leak sensing cable and are connected to the master controller and the detection controller, and wherein the power and communication lines comprise a positive (+) power and communication line and a negative (โˆ’) power and communication line. ### Claim 2 (depends on 1) The leak detection system of claim 1, wherein the positive power and communication line and the negative power and communication line are connected to the detection controller using the master controller as a start point and an end point thus forming a closed loop. ### Claim 3 (depends on 1) The leak detection system of claim 1, wherein the at least one detection controller comprises two or more detection controllers, and the detection controllers are respectively connected to the sensor lines. ### Claim 4 (depends on 3) The leak detection system of claim 3, wherein the sensor lines comprise two pairs of leak detection lines each pair comprising a single detection line and a single extension line, and one end of each of the detection lines and the extension lines is connected to the detection controllers, and the other end thereof is terminated so that the detection lines and the extension lines of respective pairs of leak detection lines are connected to each other. ### Claim 5 (depends on 1) The leak detection system of claim 1, further comprising an alarm for informing of reception of the leak position signal by the master controller when the leak position signal is transmitted to the master controller. ### Claim 6 A leak detection system having power and communication lines, comprising a leak sensing cable having sensor lines for sensing a leak, at least one detection controller connected to the sensor lines to detect a leak position signal, and a master controller receiving the detected leak position signal from the detection controller, wherein the leak sensing cable includes the power and communication lines that are wired to supply power to the detection controller via the master controller and to transmit the leak position signal from the detection controller to the master controller, and a computer for storing the leak position signal received by the master controller and displaying it on a monitor is provided, wherein the leak sensing cable further includes leak amount sensor lines for sensing a leak amount, the detection controller is connected to the leak amount sensor lines to further detect a leak amount signal, and the master controller further receives the detected leak amount signal from the detection controller. ### Claim 7 (depends on 6) The leak detection system of claim 6, wherein the leak amount sensor lines comprise a leak amount film sensor and an extension line, and one end of each of the leak amount film sensor and the extension line is connected to the detection controller, and the other end of the leak amount film sensor and the other end of the extension line are terminated so as to be connected to each other. ### Claim 8 (depends on 7) The leak detection system of claim 7, wherein the leak amount film sensor and the extension line are attached to an outer surface of the leak sensing cable. ### Claim 9 A leak detection system having power and communication lines, comprising a leak sensing cable having sensor lines for sensing a leak, at least one detection controller connected to the sensor lines to detect a leak position signal, and a master controller receiving the detected leak position signal from the detection controller, wherein the leak sensing cable includes the power and communication lines that supply power to the detection controller via the master controller and transmit the leak position signal from the detection controller to the master controller, and a common line wired to form a closed circuit of the master controller and the detection controller along with the power and communication lines. ### Claim 10 (depends on 9) The leak detection system of claim 9, wherein the power and communication lines and the common line are embedded in the leak sensing cable, and are connected to the master controller and the detection controller. ### Claim 11 (depends on 10) The leak detection system of claim 10, wherein the power and communication lines comprise a positive (+) power and communication line and a negative (โˆ’) power and communication line. ### Claim 12 (depends on 9) The leak detection system of claim 9, wherein the at least one detection controller comprises two or more detection controllers, and the detection controllers are respectively connected to the sensor lines. ### Claim 13 (depends on 12) The leak detection system of claim 12, wherein the sensor lines comprise two pairs of leak detection lines each pair comprising a single detection line and a single extension line, and one end of each of the detection lines and the extensions is connected to the detection controllers, and the other end thereof is terminated so that the detection lines and the extension lines of respective pairs of leak detection lines are connected to each other. ### Claim 14 (depends on 9) The leak detection system of claim 9, further comprising a computer for storing the leak position signal received by the master controller and displaying it on a monitor. ### Claim 15 (depends on 14) The leak detection system of claim 14, further comprising an alarm for informing of reception of the leak position signal by the master controller when the leak position signal is transmitted to the master controller. ### Claim 16 (depends on 9) The leak detection system of claim 9, wherein the leak sensing cable further includes leak amount sensor lines for sensing a leak amount, the detection controller is connected to the leak amount sensor lines to further detect a leak amount signal, and the master controller further receives the detected leak amount signal from the detection controller. ### Claim 17 (depends on 16) The leak detection system of claim 16, wherein the leak amount sensor lines comprise a leak amount film sensor and an extension line, and one end of each of the leak amount film sensor and the extension line is connected to the detection controller, and the other end of the leak amount film sensor and the other end of the extension line are terminated so as to be connected to each other. ### Claim 18 (depends on 17) The leak detection system of claim 17, wherein the leak amount film sensor and the extension line are attached to an outer surface of the leak sensing cable.