CA2962001A1 - System and method for monitoring analog and digital transceivers - Google Patents
System and method for monitoring analog and digital transceivers Download PDFInfo
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- CA2962001A1 CA2962001A1 CA2962001A CA2962001A CA2962001A1 CA 2962001 A1 CA2962001 A1 CA 2962001A1 CA 2962001 A CA2962001 A CA 2962001A CA 2962001 A CA2962001 A CA 2962001A CA 2962001 A1 CA2962001 A1 CA 2962001A1
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- Prior art keywords
- transmit power
- transceiver
- data
- monitoring
- sensor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
- H04B17/102—Power radiated at antenna
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
A system for monitoring a transceiver is provided. The system comprises a transmit power sensor. The transmit power sensor senses output transmit power of the transceiver and generates transmit power data indicative thereof A receive sense sensor senses a receive sense of the transceiver and generates receive sense data indicative thereof A microcontroller is connected to the transmit power sensor and the receive sense sensor. The microcontroller determines a change of state of the transceiver in dependence upon the transmit power data and the receive sense data and generates data indicative of the change of state.
Description
SYSTEM AND METHOD FOR MONITORING ANALOG AND DIGITAL TRANSCEIVERS
FIELD OF THE INVENTION
The present invention relates to monitoring wireless communication systems, and more particularly to a system and method capable of monitoring analog as well as digital transceivers of wireless communication systems.
BACKGROUND OF THE INVENTION
With a constantly increasing number of wireless information and communication networks such as, for example, cellular networks and interne access, and an increasing number of services using these communication networks, available to the public, there is an increasing dependence on proper and reliable operation of the same for enabling everyday tasks such as internet banking, as well as, potentially live saving tasks such as sending an emergency call.
In order to ensure reliable operation, communication services providers have to monitor their wireless information and communication networks, and in particular the transceivers of their wireless information and communication networks.
Unfortunately, present-day monitoring systems are typically designed for monitoring transceivers having specific narrowband frequency characteristics, and are complex and time consuming to setup requiring configuration and calibration. Furthermore, these systems typically require scientific instrumentation for testing which is not kept on-site, i.e. they enable monitoring of the transceiver only when a technician is on-site, for example, for maintenance or repair.
It is desirable to provide a system and method for monitoring transceivers that is capable of monitoring analog, as well as, digital transceivers of wireless communication systems.
It is also desirable to provide a system and method for monitoring transceivers that is capable of monitoring transceivers having different frequency characteristics.
It is also desirable to provide a system and method for monitoring transceivers that is installed on-site enabling constantly monitoring of the transceiver.
It is also desirable to provide a system and method for monitoring transceivers that is easily installed in existing radio communication networks.
SUMMARY OF THE INVENTION
Accordingly, one object of the present invention is to provide a system and method for monitoring transceivers that is capable of monitoring analog, as well as, digital transceivers of wireless communication systems.
Another object of the present invention is to provide a system and method for monitoring transceivers that is capable of monitoring transceivers having different frequency characteristics.
Another object of the present invention is to provide a system and method for monitoring transceivers that is installed on-site enabling constantly monitoring of the transceiver.
Another object of the present invention is to provide a system and method for monitoring transceivers that is easily installed in existing radio communication networks.
According to one aspect of the present invention, there is provided a system for monitoring a transceiver. The system comprises a transmit power sensor. The transmit power sensor senses output transmit power of the transceiver and generates transmit power data indicative thereof. A
receive sense sensor senses a receive sense of the transceiver and generates receive sense data indicative thereof. A microcontroller is connected to the transmit power sensor and the receive sense sensor. The microcontroller determines a change of state of the transceiver in dependence upon the transmit power data and the receive sense data and generates data indicative of the change of state.
According to the aspect of the present invention, there is provided a method for monitoring a transceiver. A transmit power sensor senses output transmit power of the transceiver and generates transmit power data indicative thereof. A receive sense sensor senses a receive sense of the transceiver and generates receive sense data indicative thereof. A
microcontroller receives the transmit power data and the receive sense data and determines a change of state of the transceiver in dependence thereupon and generates data indicative of the change of state.
The advantage of the present invention is that it provides a system and method for monitoring transceivers that is capable of monitoring analog, as well as, digital transceivers of wireless communication systems.
A further advantage of the present invention is that it provides a system and method for monitoring transceivers that is capable of monitoring transceivers having different frequency characteristics.
A further advantage of the present invention is to provide a system and method for monitoring transceivers that is installed on-site enabling constantly monitoring of the transceiver.
A further advantage of the present invention is to provide a system and method for monitoring transceivers that is easily installed in existing radio communication networks.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred embodiment of the present invention is described below with reference to the accompanying drawings, in which:
Figure 1 is a simplified block diagram illustrating a system for monitoring a transceiver according to a preferred embodiment of the invention; and, Figure 2 is a simplified block diagram illustrating a visual display of monitoring data of the system for monitoring a transceiver according to the preferred embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs.
Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, the preferred methods and materials are now described.
Referring to Figure 1, a system for monitoring a transceiver 100 according to a preferred embodiment of the invention is provided. The system 100 comprises a plurality of on-site components 100A ¨ only one of which is illustrated in Figure 1 for simplicity -which are placed at the respective locations of the transceivers 10 such as, for example, cellular radio towers of a cellular network. The components 110A are connected to a - preferably, cloud based ¨ central component 100B via, for example, the Internet.
Each component 100A comprises transceiver sensors 102, site sensors 104, and data aggregation unit sensors 106. The transceiver sensors 102, the site sensors 104, and the data aggregation unit sensors 106 are connected to data aggregation and analytics unit 108.
The transceiver sensors 102 comprise a Radio Frequency (RF) transmit power sensor, an Alternating Current (AC) mains sensor, and receive sense sensor. The RF
transmit power sensor is designed in a conventional manner using conventional off-the-shelf components such as RF
couplers, microcontrollers and circuit design. Preferably, the RF coupler, which is connected to the transceiver 10, is a broadband coupler having low insertion loss and a sufficiently high power rating to meet the power requirements of the majority of legal spectrum transmissions for two-way radio. The microcontroller such as, for example, a Field-Programmable Gate Array (FPGA), of the RF transmit power sensor determines an output transmit power envelope based on a signal sensed via the RF coupler. Preferably, the RF transmit power sensor senses and transmits the output transmit power envelope data to the data aggregation and analytics unit 108 in a continuous fashion. Since the RF transmit power sensor senses and determines the overall power envelope, versus the modulation scheme, the RF transmit power sensor is capable of measuring any form of analog and digital transmission. Furthermore, the RF transmit power sensor is capable of determining the output transmit power envelope without on-site calibration.
The AC mains sensor measures and determines the Alternating Current (AC) provided to the transceiver 10 based on Root Mean Square (RMS) measurements using a microcontroller based current sensing device. Preferably, the AC mains sensor determines the AC and sends AC data to the data aggregation and analytics unit 108 in a continuous fashion.
Optionally, the AC mains sensor is adapted to determine the frequency of the actual AC current and to detect any frequency shift based on external power factors.
The receive sense sensor determines receive sense from the transceiver 10 based on the transceiver display. The receive sense sensor is connected to the visual display of the transceiver 10 to measure the signal to the LED light which lights up while the transceiver 10 receives a message. Preferably, the receive sense sensor determines and sends the receive sense data to the data aggregation and analytics unit 108 in a continuous fashion.
The site sensors 104 are off-the-shelf sensors for sensing temperature and humidity and for determining temperature and humidity data in dependence thereupon. Preferably, the site sensors 104 determine and send the temperature and humidity data to the data aggregation and analytics unit 108 in a continuous fashion.
The data aggregation unit sensors 106 sense and determine the state of communications such as, for example, if it is available, the signal strength, and whether the signal is usable or not, as well as, the state of power provision ¨ external power or backup power. Preferably, the data aggregation unit sensors 106 determine and send the state of communications and backup data to the data aggregation and analytics unit 108 in a continuous fashion.
The data aggregation and analytics unit 108 is a microcontroller based system using, for example, an off-the-shelf FPGA. The data aggregation and analytics unit 108 manages data aggregation from all the sensors by sampling data from the sensors synchronously and/or asynchronously.
The data aggregation and analytics unit 108 correlates the data received from the transceiver sensors 102 and determines if there is a change of state based on predetermined thresholds and, optionally, to determine if there are fault mechanisms indicating possible future equipment failure. The data aggregation and analytics unit 108 also correlates the signal that a receive message was received and that a message was actually transmitted via the RF
sensor feedback.
Each sensor data have upper and lower predetermined thresholds associated therewith which are user configurable. The data aggregation and analytics unit 108 further manages the communication with the central component 100B, for example, via cellular or satellite communication. Optionally, the data aggregation and analytics unit 108 performs updates such as, for example, firmware updates of the sensors when necessary. Preferably, the data is analyzed by the data aggregation and analytics unit 108 over a predetermined external polling period, which is based on the type of communication available, in order to minimize the amount of data that is sent to the component 100B. Further preferably, the data is sent as meta data in the form of Java Script Object Notation (JSON) messages.
The central component 100B, preferably, comprises a cloud based database 112, a cloud based secure streaming data server 110, and a cloud based webserver 114. The secure streaming data server 110 manages the data communication with each of the data aggregation and analytics units 108 and the firmware updates. The webserver 114 performs processing of the meta data, data communication with the database 112, data presentation and account and user management via a user interface connected thereto. The central component 100B receives the meta data from each of the data aggregation and analytics units 108 and visually presents the data in a variety of views including, for example, most recent values, state of the sensor, and historical trending of the data, as illustrated in an example implementation in Figure 2. Preferably, the central component 100B
enables/performs: configuration of all sensors and data aggregation and analytics units 108;
configuration of user access including administrators and technicians;
configuration of thresholds; and, configuration of alerts for technicians if a sensor value exceeds a respective threshold.
Preferably, all components of the system 100 are adapted to automatically interoperate, thus obviating calibration and setup.
Optionally, the system 100 may be adapted to operate in a learning mode for a preset time period of normal operation of the transceivers 10 during which the system learns the thresholds for the various observed parameters and stores the same for the monitoring operation.
For example, the system 100 observes the transceiver 10 and its environment for a period of days and determines the amount of variance of each parameter that is being observed and then determines the thresholds accordingly. Of course, the thresholds may be changed or set by the customer.
The system 100 is easily installed in existing communication networks. It has broadband RF
sensor capability, works across a wide frequency spectrum, can be installed in analog and digital radio communication networks. It observes all parameters necessary for monitoring the transceivers, provides insight in the observed parameters, and storage of the same, for example, for displaying the transceiver operation over time. Further, it does not require calibration and does not require setup.
The present invention has been described herein with regard to preferred embodiments. However, it will be obvious to persons skilled in the art that a number of variations and modifications can be made without departing from the scope of the invention as described herein.
FIELD OF THE INVENTION
The present invention relates to monitoring wireless communication systems, and more particularly to a system and method capable of monitoring analog as well as digital transceivers of wireless communication systems.
BACKGROUND OF THE INVENTION
With a constantly increasing number of wireless information and communication networks such as, for example, cellular networks and interne access, and an increasing number of services using these communication networks, available to the public, there is an increasing dependence on proper and reliable operation of the same for enabling everyday tasks such as internet banking, as well as, potentially live saving tasks such as sending an emergency call.
In order to ensure reliable operation, communication services providers have to monitor their wireless information and communication networks, and in particular the transceivers of their wireless information and communication networks.
Unfortunately, present-day monitoring systems are typically designed for monitoring transceivers having specific narrowband frequency characteristics, and are complex and time consuming to setup requiring configuration and calibration. Furthermore, these systems typically require scientific instrumentation for testing which is not kept on-site, i.e. they enable monitoring of the transceiver only when a technician is on-site, for example, for maintenance or repair.
It is desirable to provide a system and method for monitoring transceivers that is capable of monitoring analog, as well as, digital transceivers of wireless communication systems.
It is also desirable to provide a system and method for monitoring transceivers that is capable of monitoring transceivers having different frequency characteristics.
It is also desirable to provide a system and method for monitoring transceivers that is installed on-site enabling constantly monitoring of the transceiver.
It is also desirable to provide a system and method for monitoring transceivers that is easily installed in existing radio communication networks.
SUMMARY OF THE INVENTION
Accordingly, one object of the present invention is to provide a system and method for monitoring transceivers that is capable of monitoring analog, as well as, digital transceivers of wireless communication systems.
Another object of the present invention is to provide a system and method for monitoring transceivers that is capable of monitoring transceivers having different frequency characteristics.
Another object of the present invention is to provide a system and method for monitoring transceivers that is installed on-site enabling constantly monitoring of the transceiver.
Another object of the present invention is to provide a system and method for monitoring transceivers that is easily installed in existing radio communication networks.
According to one aspect of the present invention, there is provided a system for monitoring a transceiver. The system comprises a transmit power sensor. The transmit power sensor senses output transmit power of the transceiver and generates transmit power data indicative thereof. A
receive sense sensor senses a receive sense of the transceiver and generates receive sense data indicative thereof. A microcontroller is connected to the transmit power sensor and the receive sense sensor. The microcontroller determines a change of state of the transceiver in dependence upon the transmit power data and the receive sense data and generates data indicative of the change of state.
According to the aspect of the present invention, there is provided a method for monitoring a transceiver. A transmit power sensor senses output transmit power of the transceiver and generates transmit power data indicative thereof. A receive sense sensor senses a receive sense of the transceiver and generates receive sense data indicative thereof. A
microcontroller receives the transmit power data and the receive sense data and determines a change of state of the transceiver in dependence thereupon and generates data indicative of the change of state.
The advantage of the present invention is that it provides a system and method for monitoring transceivers that is capable of monitoring analog, as well as, digital transceivers of wireless communication systems.
A further advantage of the present invention is that it provides a system and method for monitoring transceivers that is capable of monitoring transceivers having different frequency characteristics.
A further advantage of the present invention is to provide a system and method for monitoring transceivers that is installed on-site enabling constantly monitoring of the transceiver.
A further advantage of the present invention is to provide a system and method for monitoring transceivers that is easily installed in existing radio communication networks.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred embodiment of the present invention is described below with reference to the accompanying drawings, in which:
Figure 1 is a simplified block diagram illustrating a system for monitoring a transceiver according to a preferred embodiment of the invention; and, Figure 2 is a simplified block diagram illustrating a visual display of monitoring data of the system for monitoring a transceiver according to the preferred embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs.
Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, the preferred methods and materials are now described.
Referring to Figure 1, a system for monitoring a transceiver 100 according to a preferred embodiment of the invention is provided. The system 100 comprises a plurality of on-site components 100A ¨ only one of which is illustrated in Figure 1 for simplicity -which are placed at the respective locations of the transceivers 10 such as, for example, cellular radio towers of a cellular network. The components 110A are connected to a - preferably, cloud based ¨ central component 100B via, for example, the Internet.
Each component 100A comprises transceiver sensors 102, site sensors 104, and data aggregation unit sensors 106. The transceiver sensors 102, the site sensors 104, and the data aggregation unit sensors 106 are connected to data aggregation and analytics unit 108.
The transceiver sensors 102 comprise a Radio Frequency (RF) transmit power sensor, an Alternating Current (AC) mains sensor, and receive sense sensor. The RF
transmit power sensor is designed in a conventional manner using conventional off-the-shelf components such as RF
couplers, microcontrollers and circuit design. Preferably, the RF coupler, which is connected to the transceiver 10, is a broadband coupler having low insertion loss and a sufficiently high power rating to meet the power requirements of the majority of legal spectrum transmissions for two-way radio. The microcontroller such as, for example, a Field-Programmable Gate Array (FPGA), of the RF transmit power sensor determines an output transmit power envelope based on a signal sensed via the RF coupler. Preferably, the RF transmit power sensor senses and transmits the output transmit power envelope data to the data aggregation and analytics unit 108 in a continuous fashion. Since the RF transmit power sensor senses and determines the overall power envelope, versus the modulation scheme, the RF transmit power sensor is capable of measuring any form of analog and digital transmission. Furthermore, the RF transmit power sensor is capable of determining the output transmit power envelope without on-site calibration.
The AC mains sensor measures and determines the Alternating Current (AC) provided to the transceiver 10 based on Root Mean Square (RMS) measurements using a microcontroller based current sensing device. Preferably, the AC mains sensor determines the AC and sends AC data to the data aggregation and analytics unit 108 in a continuous fashion.
Optionally, the AC mains sensor is adapted to determine the frequency of the actual AC current and to detect any frequency shift based on external power factors.
The receive sense sensor determines receive sense from the transceiver 10 based on the transceiver display. The receive sense sensor is connected to the visual display of the transceiver 10 to measure the signal to the LED light which lights up while the transceiver 10 receives a message. Preferably, the receive sense sensor determines and sends the receive sense data to the data aggregation and analytics unit 108 in a continuous fashion.
The site sensors 104 are off-the-shelf sensors for sensing temperature and humidity and for determining temperature and humidity data in dependence thereupon. Preferably, the site sensors 104 determine and send the temperature and humidity data to the data aggregation and analytics unit 108 in a continuous fashion.
The data aggregation unit sensors 106 sense and determine the state of communications such as, for example, if it is available, the signal strength, and whether the signal is usable or not, as well as, the state of power provision ¨ external power or backup power. Preferably, the data aggregation unit sensors 106 determine and send the state of communications and backup data to the data aggregation and analytics unit 108 in a continuous fashion.
The data aggregation and analytics unit 108 is a microcontroller based system using, for example, an off-the-shelf FPGA. The data aggregation and analytics unit 108 manages data aggregation from all the sensors by sampling data from the sensors synchronously and/or asynchronously.
The data aggregation and analytics unit 108 correlates the data received from the transceiver sensors 102 and determines if there is a change of state based on predetermined thresholds and, optionally, to determine if there are fault mechanisms indicating possible future equipment failure. The data aggregation and analytics unit 108 also correlates the signal that a receive message was received and that a message was actually transmitted via the RF
sensor feedback.
Each sensor data have upper and lower predetermined thresholds associated therewith which are user configurable. The data aggregation and analytics unit 108 further manages the communication with the central component 100B, for example, via cellular or satellite communication. Optionally, the data aggregation and analytics unit 108 performs updates such as, for example, firmware updates of the sensors when necessary. Preferably, the data is analyzed by the data aggregation and analytics unit 108 over a predetermined external polling period, which is based on the type of communication available, in order to minimize the amount of data that is sent to the component 100B. Further preferably, the data is sent as meta data in the form of Java Script Object Notation (JSON) messages.
The central component 100B, preferably, comprises a cloud based database 112, a cloud based secure streaming data server 110, and a cloud based webserver 114. The secure streaming data server 110 manages the data communication with each of the data aggregation and analytics units 108 and the firmware updates. The webserver 114 performs processing of the meta data, data communication with the database 112, data presentation and account and user management via a user interface connected thereto. The central component 100B receives the meta data from each of the data aggregation and analytics units 108 and visually presents the data in a variety of views including, for example, most recent values, state of the sensor, and historical trending of the data, as illustrated in an example implementation in Figure 2. Preferably, the central component 100B
enables/performs: configuration of all sensors and data aggregation and analytics units 108;
configuration of user access including administrators and technicians;
configuration of thresholds; and, configuration of alerts for technicians if a sensor value exceeds a respective threshold.
Preferably, all components of the system 100 are adapted to automatically interoperate, thus obviating calibration and setup.
Optionally, the system 100 may be adapted to operate in a learning mode for a preset time period of normal operation of the transceivers 10 during which the system learns the thresholds for the various observed parameters and stores the same for the monitoring operation.
For example, the system 100 observes the transceiver 10 and its environment for a period of days and determines the amount of variance of each parameter that is being observed and then determines the thresholds accordingly. Of course, the thresholds may be changed or set by the customer.
The system 100 is easily installed in existing communication networks. It has broadband RF
sensor capability, works across a wide frequency spectrum, can be installed in analog and digital radio communication networks. It observes all parameters necessary for monitoring the transceivers, provides insight in the observed parameters, and storage of the same, for example, for displaying the transceiver operation over time. Further, it does not require calibration and does not require setup.
The present invention has been described herein with regard to preferred embodiments. However, it will be obvious to persons skilled in the art that a number of variations and modifications can be made without departing from the scope of the invention as described herein.
Claims (2)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A system for monitoring a transceiver comprising:
a transmit power sensor for sensing output transmit power of the transceiver and for generating transmit power data indicative thereof;
a receive sense sensor for sensing a receive sense of the transceiver and for generating receive sense data indicative thereof; and, a microcontroller connected to the transmit power sensor and the receive sense sensor, the microcontroller for determining a change of state of the transceiver in dependence upon the transmit power data and the receive sense data and for generating data indicative of the change of state.
a transmit power sensor for sensing output transmit power of the transceiver and for generating transmit power data indicative thereof;
a receive sense sensor for sensing a receive sense of the transceiver and for generating receive sense data indicative thereof; and, a microcontroller connected to the transmit power sensor and the receive sense sensor, the microcontroller for determining a change of state of the transceiver in dependence upon the transmit power data and the receive sense data and for generating data indicative of the change of state.
2. A method for monitoring a transceiver comprising:
using a transmit power sensor sensing output transmit power of the transceiver and generating transmit power data indicative thereof;
using a receive sense sensor sensing a receive sense of the transceiver and generating receive sense data indicative thereof; and, using a microcontroller connected to the transmit power sensor and the receive sense sensor determining a change of state of the transceiver in dependence upon the transmit power data and the receive sense data and generating data indicative of the change of state.
using a transmit power sensor sensing output transmit power of the transceiver and generating transmit power data indicative thereof;
using a receive sense sensor sensing a receive sense of the transceiver and generating receive sense data indicative thereof; and, using a microcontroller connected to the transmit power sensor and the receive sense sensor determining a change of state of the transceiver in dependence upon the transmit power data and the receive sense data and generating data indicative of the change of state.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2962001A CA2962001A1 (en) | 2017-03-24 | 2017-03-24 | System and method for monitoring analog and digital transceivers |
| PCT/CA2018/000059 WO2018170579A1 (en) | 2017-03-24 | 2018-03-22 | System and method for monitoring analog and digital transceivers with persistent and non-persistent communications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2962001A CA2962001A1 (en) | 2017-03-24 | 2017-03-24 | System and method for monitoring analog and digital transceivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2962001A1 true CA2962001A1 (en) | 2018-09-24 |
Family
ID=63583907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2962001A Abandoned CA2962001A1 (en) | 2017-03-24 | 2017-03-24 | System and method for monitoring analog and digital transceivers |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2962001A1 (en) |
| WO (1) | WO2018170579A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6437692B1 (en) * | 1998-06-22 | 2002-08-20 | Statsignal Systems, Inc. | System and method for monitoring and controlling remote devices |
| US20090243801A1 (en) * | 2008-03-31 | 2009-10-01 | Martin Strzelczyk | Method and System for Utilizing an RFID Sensor Tag as RF Power Measurement Embedded in Antenna |
| US9300342B2 (en) * | 2013-04-18 | 2016-03-29 | Apple Inc. | Wireless device with dynamically adjusted maximum transmit powers |
-
2017
- 2017-03-24 CA CA2962001A patent/CA2962001A1/en not_active Abandoned
-
2018
- 2018-03-22 WO PCT/CA2018/000059 patent/WO2018170579A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018170579A1 (en) | 2018-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20220301 |