CN110768378B - Measurement load control terminal - Google Patents
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- CN110768378B CN110768378B CN201911040090.6A CN201911040090A CN110768378B CN 110768378 B CN110768378 B CN 110768378B CN 201911040090 A CN201911040090 A CN 201911040090A CN 110768378 B CN110768378 B CN 110768378B
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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Abstract
本申请涉及计量负控终端，包括计量装置及传输管理装置；计量装置采用串行通讯接口连接传输管理装置；计量装置用于实现电能计量；传输管理装置用于实现电能管理及功能升级。采用了分离设置且相连接的计量装置及传输管理装置，计量部分功能简单可靠，能实现精确的电能计量，着重保证未来相当长的时间内没有程序升级的要求，安全可靠；管理部分在实现当前管理的需求基础上，着重于保证在功能需求增加或改变的情况下，软件能够实现升级，同时避免对计量部分的影响，保证计量数据准确性、稳定性及可靠性；在长期运行模式下，不容易出现某个功能模块故障导致计量可靠性及准确度异常工作，保证计量可靠、稳定，计量数据准确及存储安全。
The present application relates to a metering negative control terminal, including a metering device and a transmission management device; the metering device uses a serial communication interface to connect to the transmission management device; the metering device is used to realize electric energy measurement; the transmission management device is used to realize electric energy management and function upgrade. Separately set and connected metering device and transmission management device are adopted. The function of the metering part is simple and reliable, which can realize accurate electric energy metering. On the basis of the management requirements, it focuses on ensuring that the software can be upgraded when the functional requirements increase or change, while avoiding the impact on the measurement part, and ensuring the accuracy, stability and reliability of the measurement data; in the long-term operation mode, It is not easy for a functional module failure to cause abnormal measurement reliability and accuracy to ensure reliable and stable measurement, accurate measurement data and safe storage.
Description
Technical Field
The application relates to the field of negative control terminals, in particular to a metering negative control terminal.
Background
The load control terminal is used for terminal equipment for field service and management, and functions of remote meter reading, electric energy metering, equipment working conditions, customer power load, electric energy monitoring and the like for a special transformer user are realized. With the accelerated development of the construction of the electric power market, particularly after the construction of the spot market, the market has higher and higher requirements on the acquisition performance of the metering device. The traditional metering device can not meet the current electric power settlement requirement of the electric power spot market, and has a plurality of defects in the aspects of instantaneity, stability and the like. In order to improve the stability of a terminal product, the service life of hardware, the metering reliability and accuracy, the meter reading, the online reliability and the three-proofing capability need to be improved.
The traditional load control terminal mainly comprises a single chip microcomputer, a display, a memory, a load control, a communication (RS-485/uplink and downlink module), an ESAM module, a clock unit, an acquisition unit, a keyboard, a remote control, a watchdog, an Ethernet, RS232, a USB and the like. In the past, the design idea of 'single MCU + special electric energy metering module' is mainly adopted, and the design idea is to transmit sampled signals to the metering module and calculate various point parameter information by the metering module and transmit the point parameter information to the management MCU unit for processing. In the design mode, when the system runs in the running mode, especially when the system runs in a large quantity and for a long time, the fault of a certain functional module is easy to occur, so that the measurement reliability and accuracy are abnormal, and the measurement reliability and stability cannot be ensured.
However, in the existing monitoring system, a connection mode that the alarm sensor is directly connected with the monitoring system host is generally adopted, and when some monitoring systems need to be provided with hundreds or even thousands of alarm points, the problems of complex construction and high cost can be caused by adopting the connection mode.
Disclosure of Invention
Based on this, it is necessary to provide a measurement load control terminal.
A metering load control terminal, comprising: a metering device and a transmission management device;
the metering device is connected with the transmission management device by adopting a serial communication interface;
the metering device is used for realizing electric energy metering;
the transmission management device is used for realizing electric energy management and function upgrading.
The metering load control terminal adopts the metering device and the transmission management device which are separately arranged and connected, the functions of the metering part are simple and reliable, the accurate electric energy metering can be realized, the requirement of program upgrading is emphatically ensured within a long time in the future, and the metering load control terminal is safe and reliable; on the basis of realizing the current management requirement, the management part emphasizes on ensuring that the software can be upgraded under the condition that the functional requirement is increased or changed, simultaneously avoids the influence on the metering part and ensures the accuracy, stability and reliability of the metering data; under the long-term operation mode, the abnormal work of measurement reliability and accuracy caused by the fault of a certain functional module is not easy to occur, and the measurement reliability, stability, measurement data accuracy and storage safety are ensured.
In one embodiment, the metering load control terminal further includes a system power module, the system power module is respectively connected to the metering device and the transmission management device, and the system power module is used for supplying power.
In one embodiment, the metering device comprises a sampling module, a metering module and a metering micro-control unit;
the sampling module is used for sampling voltage and current signals in a power grid and transmitting the sampled signals to the metering module;
the metering module is used for calculating electric parameter information and transmitting the electric parameter information to the metering micro-control unit;
and the metering micro-control unit is used for processing the electric parameter information and transmitting the electric parameter information to the transmission management device through a serial port.
In one embodiment, the sampling module comprises a multiplier, and a voltage converter and a current converter which are respectively connected with the multiplier; the metering module comprises a voltage/frequency converter, a frequency divider and a counter which are connected; the multiplier is also connected with the voltage/frequency converter, and the voltage/frequency converter is also connected with the metering micro-control unit.
In one embodiment, the metering device and the transmission management device are respectively provided with a hard clock module.
In one embodiment, the hard clock module includes a clock battery and a real-time clock chip.
In one embodiment, the metering load control terminal further comprises a watchdog circuit connected with the metering micro-control unit.
In one embodiment, the metering load control terminal further comprises a memory connected with the metering micro-control unit.
In one embodiment, the transmission management device is provided with an electric energy management module and a function upgrading module; the function upgrading module is connected with the electric energy management module and is used for upgrading functions of the electric energy management module.
In one embodiment, the power management module includes at least one of a display module, a communication module, a keyboard module, a remote control module, a detection module, a load control module, and an embedded security control module.
Drawings
Fig. 1 is a schematic structural diagram according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of another embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used in the description of the present application are for illustrative purposes only and do not denote a single 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 this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment of the present application, a metering load control terminal includes: a metering device and a transmission management device; the metering device is connected with the transmission management device by adopting a serial communication interface; the metering device is used for realizing electric energy metering; the transmission management device is used for realizing electric energy management and function upgrading. The metering load control terminal adopts the metering device and the transmission management device which are separately arranged and connected, the functions of the metering part are simple and reliable, the accurate electric energy metering can be realized, the requirement of program upgrading is emphatically ensured within a long time in the future, and the metering load control terminal is safe and reliable; on the basis of realizing the current management requirement, the management part emphasizes on ensuring that the software can be upgraded under the condition that the functional requirement is increased or changed, simultaneously avoids the influence on the metering part and ensures the accuracy, stability and reliability of the metering data; under the long-term operation mode, the abnormal work of measurement reliability and accuracy caused by the fault of a certain functional module is not easy to occur, and the measurement reliability, stability, measurement data accuracy and storage safety are ensured.
In one embodiment, the metering negative control terminal comprises a part of or the whole structure of the following embodiments; namely, the measurement negative control terminal comprises the following partial technical characteristics or all the technical characteristics. In one embodiment, the metering load control terminal comprises a metering device and a transmission management device; the metering device is connected with the transmission management device by adopting a serial communication interface; further, in one embodiment, the metering device and the transmission management device are respectively and independently formed into a single piece, such as a box body, and the two single pieces are connected through a serial port, such as RS485 or a USB cable. In one embodiment, the separate piece is box-shaped. In one embodiment, the separate piece is provided with the serial communication interface. For example, two small boxes are formed, and the two small boxes are connected through RS485 or USB lines. Further, in one embodiment, the metering device and the transmission management device are respectively and independently formed into a single piece and are in serial port butt joint with each other, so that the metering device and the transmission management device can be assembled and installed quickly and are easy to replace. Therefore, metering and management are separated into two parts, the metering device and the transmission management device are separately arranged and connected, the two parts are mutually independent, the functional requirements of each part are different, the functions of the metering device part are simple and reliable, the functions of the transmission management device part can be upgraded, on one hand, the requirements of accuracy and reliability in the aspect of electric energy metering are met, on the other hand, the requirements of effective management and upgrade control in the aspect of management are met, and compared with the prior art, the device is particularly suitable for a long-term operation mode, the metering reliability and accuracy are ensured, and the metering accuracy of the metering device part caused by the fault of a certain functional module of the transmission management device part is avoided.
In one embodiment, the overall design scheme of the present application is divided into 2 major parts, the first part represents a metering device including a metering Module (i.e., a metering chip), a metering Microcontroller (MCU), a memory, an RTC, a clock battery, a watchdog, a CT detection, etc., and the second part represents a transmission management device including a management MCU, an LCD unit, a watchdog, an ESAM (Embedded Secure Access Module, an Embedded security control Module, a CPU card chip packaged by a DIP or SOP chip, substantially), a clock battery, an RTC (real time clock), a magnetic field detection, a negative control, NAND FLASH, a keyboard, a remote control, a remote communication Module, an ethernet, RS232, a USB, a 3-way 485, a micro-power wireless, etc.
In one embodiment, the metering device is used for realizing electric energy metering; in one embodiment, the metering device comprises a sampling module, a metering module and a metering micro-control unit; the sampling module is used for sampling voltage and current signals in a power grid and transmitting the sampled signals to the metering module; the metering module is used for calculating electric parameter information and transmitting the electric parameter information to the metering micro-control unit; and the metering micro-control unit is used for processing the electric parameter information and transmitting the electric parameter information to the transmission management device through a serial port. In one embodiment, the metering device is connected with the transmission management device by adopting a serial communication interface, and is used for sampling; in one embodiment, the metering device is provided with a sampling module for sampling, and the sampling module comprises a multiplier, and a voltage converter and a current converter which are respectively connected with the multiplier. In one embodiment, the metering device is provided with a metering module connected with the sampling module, the metering module comprises a voltage/frequency converter, a frequency divider and a counter, and the voltage/frequency converter is respectively connected with the frequency divider and the counter. In one embodiment, as shown in fig. 2, the sampling module includes a multiplier, and a voltage converter and a current converter respectively connected to the multiplier; the metering module comprises a voltage/frequency converter, a frequency divider and a counter which are connected; the multiplier is also connected with the voltage/frequency converter, and the voltage/frequency converter is also connected with the metering micro-control unit. Namely, the voltage/frequency converter is connected to the frequency divider and the counter, respectively. The design is favorable for realizing the reliability of sampling, and the structure is simple and easy to use, thereby ensuring the accuracy, stability and reliability of the measured data. Further, in one embodiment, the frequency divider and the counter are integrally provided. Further, in one embodiment, the metering device is provided with a metering microcontroller connected with the metering module, and the metering microcontroller is used for metering sampling data. In one embodiment, the metering microcontroller is connected to the voltage/frequency converter. In one embodiment, the metering device comprises a sampling module, a metering module, a memory, a CT detector, a 485 serial port, a first clock battery, a first real-time clock module, a first watchdog module and a metering microcontroller; the sampling module is connected with the metering module; the metering module, the memory, the CT detector, the 485 serial port and the first watchdog module are respectively connected with the metering microcontroller; the first clock battery is connected with the first real-time clock module, and the metering microcontroller is connected with the first real-time clock module.
Further, in one embodiment, the metering device adopts a metering modular design mode, wherein the sampling module and other functional modules have functional independence and interface consistency, so that the modules are more specialized and deeper, the overall performance and reliability of the product can be improved by continuously upgrading the performance of the sampling module, and other modules of the product cannot be influenced, so that the independence, interchangeability and universality of the product are improved. The metering device or the metering module and the metering microcontroller thereof can be independently replaced and upgraded; when the metering fails, the metering module can be replaced by an independent metering module, the normal operation of metering is kept, the applicability of the metering module is improved, and the purpose of plug and play can be achieved.
In one embodiment, the transmission management device is used for realizing power management and function upgrading. In one embodiment, the transmission management device is further configured to transmit data. Further, in one embodiment, the transmission management device comprises a communication module and a management microcontroller, wherein the communication module is connected with the management microcontroller; the communication module is used for communicating with the outside, and the management microcontroller is used for receiving the sampling metering data of the metering device. In one embodiment, the transmission management device comprises a communication module, a display module, a second watchdog module, an embedded security control module, a second clock battery, a second real-time clock module, a magnetic field detection module, a load control module, a flash memory module, a keyboard module, a remote control module and a management microcontroller; the communication module is connected with the management microcontroller; the second clock battery is connected with the second real-time clock module; the display module, the second watchdog module, the embedded security control module, the second real-time clock module, the magnetic field detection module, the load control module, the flash memory module, the keyboard module and the remote control module are respectively connected with the management microcontroller. In one embodiment, the display module is or includes an LCD. In one embodiment, the flash memory module is or includes NAND FLASH.
In one embodiment, the metering device and the transmission management device are respectively provided with a hard clock module. In one embodiment, the hard clock module includes a clock battery and a real-time clock chip. In one embodiment, the metering load control terminal further comprises a watchdog circuit connected with the metering micro-control unit. Further, in one embodiment, the metering negative control terminal further comprises a watchdog circuit connected with the management micro-control unit. In one embodiment, the metering load control terminal further comprises a memory connected with the metering micro-control unit. Further, in one embodiment, the metering negative control terminal further comprises a memory connected with the management micro-control unit. In one embodiment, the transmission management device is provided with an electric energy management module and a function upgrading module; the function upgrading module is connected with the electric energy management module and is used for upgrading functions of the electric energy management module. In one embodiment, the power management module includes at least one of a display module, a communication module, a keyboard module, a remote control module, a detection module, a load control module, and an embedded security control module. In one embodiment, the power management module comprises a display module, a communication module, a keyboard module, a remote control module, a detection module, a load control module or an embedded security control module. In one embodiment, the power management module comprises a display module, a communication module, a keyboard module, a remote control module, a detection module, a load control module and an embedded security control module.
In one embodiment, the communication module includes at least one of a remote communication module, an ethernet module, an RS232 module, a USB module, an RS485 module, and a micro-power wireless module. In one embodiment, the communication module comprises a remote communication module, an ethernet module, an RS232 module, a USB module, an RS485 module, or a micro-power wireless module. In one embodiment, the communication module comprises a remote communication module, an Ethernet module, an RS232 module, a USB module, an RS485 module and a micro-power wireless module. Further, in one embodiment, the metering device includes a sampling module, a metering module, a memory, a CT detector, a 485 serial port, a first clock battery, a first real-time clock module, a first watchdog module, and a metering microcontroller; the sampling module is connected with the metering module; the metering module, the memory, the CT detector, the 485 serial port and the first watchdog module are respectively connected with the metering microcontroller; the transmission management device comprises a communication module, a display module, a second watchdog module, an embedded safety control module, a second clock battery, a second real-time clock module, a magnetic field detection module, a load control module, a flash memory module, a keyboard module, a remote control module and a management microcontroller; the communication module is connected with the management microcontroller; the second clock battery is connected with the second real-time clock module; the display module, the second watchdog module, the embedded security control module, the second real-time clock module, the magnetic field detection module, the load control module, the flash memory module, the keyboard module and the remote control module are respectively connected with the management microcontroller. Further, in one embodiment, the metering device includes a sampling module, a metering module, a memory, a CT detector, a 485 serial port, a first clock battery, a first real-time clock module, a first watchdog module, and a metering microcontroller; the sampling module is connected with the metering module; the metering module, the memory, the CT detector, the 485 serial port and the first watchdog module are respectively connected with the metering microcontroller; the transmission management device comprises a communication module, a display module, a second watchdog module, an embedded safety control module, a second clock battery, a second real-time clock module, a magnetic field detection module, a load control module, a flash memory module, a keyboard module, a remote control module and a management microcontroller; the communication module is connected with the management microcontroller; the second clock battery is connected with the second real-time clock module; the display module, the second watchdog module, the embedded security control module, the second real-time clock module, the magnetic field detection module, the load control module, the flash memory module, the keyboard module and the remote control module are respectively connected with the management microcontroller; the communication module comprises a remote communication module, an Ethernet module, an RS232 module, a USB module, an RS485 module and a micro-power wireless module; the remote communication module, the Ethernet module, the RS232 module, the USB module, the RS485 module and the micropower wireless module are respectively connected with the management microcontroller. Further, in one embodiment, the metering device includes a sampling module, a metering module, a memory, a CT detector, a 485 serial port, a first clock battery, a first real-time clock module, a first watchdog module, and a metering microcontroller; the sampling module is connected with the metering module; the metering module, the memory, the CT detector, the 485 serial port and the first watchdog module are respectively connected with the metering microcontroller; the transmission management device comprises a communication module, a display module, a second watchdog module, an embedded safety control module, a second clock battery, a second real-time clock module, a magnetic field detection module, a load control module, a flash memory module, a keyboard module, a remote control module and a management microcontroller; the communication module is connected with the management microcontroller; the second clock battery is connected with the second real-time clock module; the display module, the second watchdog module, the embedded security control module, the second real-time clock module, the magnetic field detection module, the load control module, the flash memory module, the keyboard module and the remote control module are respectively connected with the management microcontroller; the communication module comprises a remote communication module, an Ethernet module, an RS232 module, a USB module, a 3-channel RS485 module and a micro-power wireless module; the remote communication module, the Ethernet module, the RS232 module, the USB module, the 3-channel RS485 module and the micropower wireless module are respectively connected with the management microcontroller. The rest of the examples are analogized.
In one embodiment, as shown in fig. 1, the metering device includes a sampling module for sampling voltage and current, a metering module, a memory, a CT detector (CT detector), a 485 serial port, a clock battery (first clock battery), an RTC (first real-time clock module), a watchdog (first watchdog module), and a metering MCU (metering microcontroller); the sampling module is connected with the metering module; the metering module, the memory, the CT detector, the 485 serial port and the first watchdog module are respectively connected with the metering microcontroller; the first clock battery is connected with the first real-time clock module, the metering microcontroller is connected with the first real-time clock module, and the metering device is connected with the transmission management device by adopting a serial communication interface; the transmission management device comprises a communication module, an LCD (display module), a watchdog (second watchdog module), an ESAM (embedded safety control module), a clock battery (second clock battery), an RTC (second real-time clock module), a magnetic field detection (magnetic field detection module), a negative control (negative control module), NAND FLASH (flash memory module), a keyboard (keyboard module), a remote control (remote control module) and a management MCU (management microcontroller); the communication module is connected with the management microcontroller; the second clock battery is connected with the second real-time clock module; the display module, the second watchdog module, the embedded security control module, the second real-time clock module, the magnetic field detection module, the load control module, the flash memory module, the keyboard module and the remote control module are respectively connected with the management microcontroller; the communication module comprises a remote communication module, an Ethernet (Ethernet module), an RS232(RS232 module), a USB (USB module), 3 paths of RS485(3 paths of RS485 modules) and a micro-power wireless (micro-power wireless module); the remote communication module, the Ethernet module, the RS232 module, the USB module, the 3-channel RS485 module and the micropower wireless module are respectively connected with the management microcontroller. The rest of the examples are analogized. The metering load control terminal adopts the metering device and the transmission management device which are separately arranged and connected, the functions of the metering part are simple and reliable, the accurate electric energy metering can be realized, the requirement of program upgrading is emphatically ensured within a long time in the future, and the metering load control terminal is safe and reliable; on the basis of realizing the current management requirement, the management part emphasizes on ensuring that the software can be upgraded under the condition that the functional requirement is increased or changed, simultaneously avoids the influence on the metering part and ensures the accuracy, stability and reliability of the metering data; under the long-term operation mode, the abnormal work of measurement reliability and accuracy caused by the fault of a certain functional module is not easy to occur, and the measurement reliability, stability, measurement data accuracy and storage safety are ensured.
Further, in one embodiment, the transmission management device is designed in a modular manner, wherein the display module, the second watchdog module, the embedded security control module, the second clock battery, the second real-time clock module, the magnetic field detection module, the load control module, the flash memory module, the keyboard module, the remote control module and other functional modules are all designed independently and do not affect each other, so as to ensure that the terminal software supports independent upgrade of each functional module, and normal operation of the metering module cannot be affected after upgrade. The upgrading is ensured to be safe, reliable, rapid and convenient.
According to the embodiments, on one hand, the metering independence is realized, the metering device and the software system of the transmission management device are designed independently, and data interaction is realized through a standard interface; on the other hand, the accuracy and the reliability of the metering data are realized, the data storage safety protection is increased, and the accuracy and the reliability of the electric energy metering are ensured. On the other hand, the clock safety is realized by matching with the embodiments of the clock battery and the real-time clock module, the clock occupies an important position in electric energy measurement, in order to ensure the accuracy of the clock, the terminal adopts a double-hard clock design, a clock power supply is ensured by a main power supply, a double-clock battery and a triple arrangement, the normal operation of the clock is ensured, and the problems of clock chaos and the like of a system caused by power failure of a power grid are solved.
In one embodiment, the metering load control terminal further includes a system power module, the system power module is respectively connected to the metering device and the transmission management device, and the system power module is used for supplying power. In one embodiment, the metering load control terminal comprises a system power supply device, a metering device and a transmission management device; the system power supply module is respectively connected with the metering device and the transmission management device and is used for supplying power; the metering device is connected with the transmission management device by adopting a serial communication interface and is used for sampling; the transmission management device is used for transmitting data. The rest of the examples are analogized. In one embodiment, the system power supply module includes two sub power supply modules, one of the sub power supply modules is used for supplying power to the metering device, and the other sub power supply module is used for supplying power to the transmission management device. The design is beneficial to realizing modularized production and assembly, and is also beneficial to connection and realization of stable power supply effect. In one embodiment, the system power module is respectively connected to each functional module that needs to be powered in the metering device and the transmission management device, and is used for supplying power to each functional module. In one embodiment, the system power supply module converts externally input alternating current into required direct current to supply power to the metering device and the transmission management device, namely, the system module and the peripheral module of the metering device and the transmission management device. The metering device part is mainly responsible for electric quantity metering, wherein the sampling module is responsible for sampling voltage and current signals in a power grid, transmitting the sampled signals to the metering module, calculating various electric parameter information by the metering module, transmitting the information to the metering microcontroller for processing, and transmitting the information to the transmission management device through the serial port. The design idea of each embodiment of the application is that on the basis of realizing original metering and management, a metering part and a management part are separately designed from the aspect of hardware, and the two parts adopt serial ports to perform one-way data transmission. The metering part has simple and reliable functions, can realize accurate electric energy metering, emphatically ensures that the program is not upgraded in a long time in the future, and is safe and reliable. The management part emphasizes on ensuring that the software can be upgraded under the condition of increasing or changing the functional requirements on the basis of realizing the current management requirements; meanwhile, the influence on the measurement part is avoided, and the accuracy, stability and reliability of the measurement data are ensured.
Other embodiments of the present application further include a measurement load control terminal that is formed by combining technical features of the above embodiments with each other and that can be implemented.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. A measurement load control terminal, comprising: a metering device and a transmission management device;
the metering device is connected with the transmission management device by adopting a serial communication interface; the metering device and the transmission management device respectively and independently form an independent piece, and the independent pieces are in a box shape and are in serial port butt joint with each other;
the metering device is used for realizing electric energy metering; the metering device adopts a metering modular design mode, and functional modules in the metering device have functional independence and interface consistency; the metering device comprises a sampling module, a metering module, a memory, a CT detector, a 485 serial port, a first clock battery, a first real-time clock module, a first watchdog module and a metering microcontroller; the sampling module is connected with the metering module; the sampling module is used for sampling voltage and current signals in a power grid and transmitting the sampled signals to the metering module; the metering module, the memory, the CT detector, the 485 serial port and the first watchdog module are respectively connected with the metering microcontroller; the metering module is used for calculating electric parameter information and transmitting the electric parameter information to the metering microcontroller; the first clock battery is connected with the first real-time clock module, and the metering microcontroller is connected with the first real-time clock module; the metering microcontroller is used for processing the electric parameter information and transmitting the electric parameter information to the transmission management device through a serial port;
the transmission management device is used for realizing electric energy management and function upgrade, the transmission management device adopts a modular design, and functional modules in the transmission management device are independently designed and do not influence each other; the transmission management device comprises a communication module, a display module, a second watchdog module, an embedded safety control module, a second clock battery, a second real-time clock module, a magnetic field detection module, a load control module, a flash memory module, a keyboard module, a remote control module and a management microcontroller; the communication module is connected with the management microcontroller; the second clock battery is connected with the second real-time clock module; the display module, the second watchdog module, the embedded security control module, the second real-time clock module, the magnetic field detection module, the load control module, the flash memory module, the keyboard module and the remote control module are respectively connected with the management microcontroller; the communication module comprises a remote communication module, an Ethernet module, an RS232 module, a USB module, a 3-channel RS485 module and a micro-power wireless module; the remote communication module, the Ethernet module, the RS232 module, the USB module, the 3-channel RS485 module and the micropower wireless module are respectively connected with the management microcontroller.
2. The metering negative control terminal according to claim 1, further comprising a system power module, wherein the system power module is respectively connected to the metering device and the transmission management device, and is used for supplying power; the system power supply module comprises two sub power supply modules, one of the sub power supply modules is used for supplying power to the metering device, and the other sub power supply module is used for supplying power to the transmission management device.
3. The metering negative control terminal according to claim 1, wherein the metering device and the transmission management device are made into two small boxes, and are connected with each other through an RS485 or USB line.
4. The terminal according to claim 1, wherein the sampling module comprises a multiplier, and a voltage converter and a current converter respectively connected to the multiplier; the metering module comprises a voltage/frequency converter, a frequency divider and a counter which are connected; the multiplier is also connected to the voltage/frequency converter, which is also connected to the metering microcontroller.
5. The terminal according to claim 1, wherein the metering device and the transmission management device are respectively provided with a hard clock module.
6. The metrological negative control terminal of claim 5, wherein the hard clock module comprises a clock battery and a real-time clock chip.
7. The metrological negative control terminal of claim 1, wherein the display module comprises an LCD.
8. The metrological negative control terminal of claim 1, wherein the flash memory module comprises NAND FLASH.
9. The metering negative control terminal according to any one of claims 1 to 8, wherein the transmission management device is provided with an electric energy management module and a function upgrading module; the function upgrading module is connected with the electric energy management module and is used for upgrading functions of the electric energy management module.
10. The metering negative control terminal of claim 9, wherein the power management module comprises at least one of a display module, a communication module, a keyboard module, a remote control module, a detection module, a negative control module and an embedded security control module.
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| EP1830450A1 (en) * | 2006-03-02 | 2007-09-05 | ABB Technology AG | Remote terminal unit and monitoring, protection and control of power systems |
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| CN202059410U (en) * | 2011-04-25 | 2011-11-30 | 利尔达科技有限公司 | Electrical network concentrator |
| CN202177664U (en) * | 2011-08-16 | 2012-03-28 | 惠州中城电子科技有限公司 | Single-phase electric energy data dynamic acquisition intelligent terminal |
| CN202275121U (en) * | 2011-09-22 | 2012-06-13 | 绍兴电力局 | A power quality monitoring device with harmonic power metering function |
| CN106370926A (en) * | 2015-07-20 | 2017-02-01 | 国网河南省电力公司平顶山供电公司 | Missing electric quantity recorder for electric energy meter changing work and using method thereof |
| CN106970252A (en) * | 2017-04-21 | 2017-07-21 | 国网浙江省电力公司电力科学研究院 | A kind of intelligent electric energy meter |
| CN207336590U (en) * | 2017-11-08 | 2018-05-08 | 四川斯普信信息技术有限公司 | NB-IOT Intelligent electric-energy metering devices |
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| CN2589997Y (en) * | 2002-11-30 | 2003-12-03 | 施必华 | Intelligent limit electric energy metering equipment |
| EP1830450A1 (en) * | 2006-03-02 | 2007-09-05 | ABB Technology AG | Remote terminal unit and monitoring, protection and control of power systems |
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Effective date of registration: 20200925 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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