CN210514436U - Multi-loop ammeter for base station - Google Patents
Multi-loop ammeter for base station Download PDFInfo
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- CN210514436U CN210514436U CN201920795898.4U CN201920795898U CN210514436U CN 210514436 U CN210514436 U CN 210514436U CN 201920795898 U CN201920795898 U CN 201920795898U CN 210514436 U CN210514436 U CN 210514436U
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Abstract
The utility model discloses a basic station multiloop ammeter, it includes the ammeter body, it has the communication interface that is used for realizing the information interaction to integrate on the ammeter body, an access interface for inputing commercial power state signal and/or oily machine state signal, a switching value input and output interface for transmitting equipment on-off state, an electric energy pulse output interface for exporting electric energy information, and a plurality of is used for gathering three-phase voltage signal and/or is used for gathering the detection interface of three-phase alternating current return circuit current signal, above-mentioned interface all is connected with this internal singlechip of ammeter, the singlechip is connected with a memory cell. The base station multi-loop ammeter realizes item collection of multiple loops of each electricity consumption of a base station through effective selection integration and reasonable arrangement of each port, is externally connected with an output port through a switching value input port and an output port, and is connected to an external platform through a private network, so that the base station multi-loop ammeter realizes base station localized management.
Description
Technical Field
The utility model relates to an instrument and meter field, concretely relates to basic station multiloop ammeter.
Background
With the rapid development of networks and the demand for information management and technical support, remote operation and control are becoming more and more important in work. The remote office not only relieves the urban traffic condition and reduces the environmental pollution, but also avoids the trouble of people on the way of going to work and leaving work, and can improve the working efficiency and the working interest of enterprise employees.
In a remote communication system, a manual meter reading mode is usually adopted to monitor one path of power distribution independently, part of the power distribution system comprises a remote data receiving unit, but the remote data receiving unit is only used for judging power consumption and has no control function, when a line needs to be closed or opened, a worker needs to go to a field for processing, and communication base station sites are usually scattered, so that a large amount of manpower and material resources can be consumed.
Since the establishment of the iron tower group, the iron tower group has received a large number of base stations stored by three operators, and in the face of such a large number of infrastructure which is widely distributed, the iron tower group faces a great challenge in operation and maintenance, how to realize efficient operation of base station management, and the intellectualization of a power distribution system is imperative.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a for newly-built basic station design, build site level distribution and equipment management platform, to realization remote monitoring such as oil machine, mains state, lightning protection device state, to each electric multiple loop realization subentry collection of using of basic station to be connected to outside platform through the private network, realize the basic station multiloop ammeter of basic station localization management.
For solving the technical problem, the utility model provides a basic station multiloop ammeter, it includes the ammeter body, it has the communication interface who is used for realizing the information interaction to integrate on the ammeter body, an access interface for inputing commercial power state signal and/or oily machine state signal, a switching value input and output interface for transmission equipment on-off state, an electric energy pulse output interface for exporting electric energy information, and a plurality of is used for gathering three-phase voltage signal and/or is used for gathering the detection interface of three-phase alternating current return circuit current signal, above-mentioned interface all is connected with this internal singlechip of ammeter, the singlechip is connected with a memory cell.
Further, a voltage acquisition unit and a current acquisition unit which are connected with the detection interface, a communication unit which is connected with the communication interface, a commercial power and an oil engine detection unit which are connected with the access interface, and a switching value input and output control unit which is connected with the switching value input and output interface are integrated in the electric meter body, and the units are connected with the single chip microcomputer.
Furthermore, a liquid crystal display screen is arranged on the ammeter body and is connected with the single chip microcomputer through a signal transmission line; the singlechip is connected with a clock chip with the model number of DS 1302Z.
Furthermore, the detection interface comprises a wiring port connected with the voltage acquisition unit and used for acquiring three-phase voltage signals, and four external ports connected with the current acquisition unit and used for acquiring electrical parameters of 4 three-phase alternating current loops, wherein the external ports are externally connected with a plurality of mutual inductors.
The power supply interface is used for inputting power supply and supplying power to all electric elements of the watch body; the power interface inputs DC48V power, and the DC-DC converter connected with the power interface converts DC48V into 2-path DC5V power, and provides DC5V working voltage for each electric element in the electric meter body respectively.
Furthermore, the number of the electric energy pulse output interfaces connected with the single chip microcomputer is four, and the electric energy pulse output interfaces are used for outputting electric energy information of 4 three-phase alternating current loops.
Furthermore, the switching value input interface is 4 dry contact input ports which are respectively used for accessing a mains supply switching state, an oil engine switching state, a lightning protection device fault state and a lightning protection device idle-on state signal, and the switching value output interface is 1 contact output port which is used for controlling the switching of a mains supply.
Further, the access interface includes 1 mains supply detection wet contact input port for accessing the mains supply working state signal and 1 oil engine detection wet contact input port for accessing the oil engine working state signal.
Further, the communication interface is an RS-485 communication interface, and communicates with the upper computer of the base station monitoring center according to YD/T1363 communication protocol through an RS485 chip with the model of MAX485 ESA.
Further, the memory unit is a memory chip with model number SST25VF 032B.
The utility model has the advantages that: the base station multi-loop electric meter can monitor the voltage, current and other electrical parameter information of a three-phase loop and upload the information through a communication interface, so that the subsequent real-time electric quantity metering is facilitated; the single chip microcomputer is connected with a storage unit, so that information can be stored conveniently for subsequent taking and checking; meanwhile, the remote monitoring of the oil engine, the commercial power state and the like can be realized through the arrangement of the access interface; the system can respectively acquire and transmit signals of a mains supply switch state, an oil engine switch state, a lightning protection device fault and a lightning protection device idle switch state to a single chip microcomputer through a switching value input interface and then upload the signals to a rear-end platform through a communication interface so as to realize a remote signaling alarm function of the electric meter; after the back-end platform receives the signal, the signal can be sent to the single chip microcomputer through the communication port and transmitted to the mains supply switch connected with the single chip microcomputer through the switching value output interface, so that the on-off control of the mains supply is realized; the base station multi-loop ammeter realizes the functions of power supply quality abnormity warning, information interaction and the like, and realizes the effective management of the base station in a localized manner.
Drawings
Fig. 1 schematically shows a structural schematic diagram of a meter body of a base station multi-loop meter.
Fig. 2 schematically shows a power interface circuit diagram of a base station multi-loop power meter.
Fig. 3 is a schematic circuit diagram of the voltage acquisition unit of the multi-loop electric meter of the base station.
Fig. 4 schematically shows a circuit diagram of one channel of the current collecting unit of the base station multi-loop electric meter.
Fig. 5 schematically shows a two-channel circuit diagram of a current collection unit of a base station multi-loop electric meter.
Fig. 6 schematically shows a three-channel circuit schematic diagram of a current collection unit of a base station multi-loop electric meter.
Fig. 7 schematically shows a four-channel circuit diagram of a current collection unit of a base station multi-loop electric meter.
Fig. 8 is a schematic diagram of the connection structure of the single chip microcomputer of the multi-loop electric meter of the base station.
Fig. 9 is a schematic diagram of a memory cell and clock chip circuit of a base station multi-loop electric meter.
Fig. 10 schematically shows a circuit schematic of the communication interface of the base station multi-loop electricity meter.
Fig. 11 is a schematic diagram of the switching value input/output interface circuit of the multi-loop electric meter of the base station.
Fig. 12 schematically shows a circuit schematic of the access interface of the base station multi-loop electricity meter.
Fig. 13 is a schematic diagram of the connection circuit of the liquid crystal display of the base station multi-loop electric meter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiment is only one embodiment of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the following description, references to "one embodiment," "an embodiment," "one example," "an example," etc., indicate that the embodiment or example so described may include a particular feature, structure, characteristic, property, element, or limitation, but every embodiment or example does not necessarily include the particular feature, structure, characteristic, property, element, or limitation. Moreover, repeated use of the phrase "in accordance with an embodiment of the present application" although it may possibly refer to the same embodiment, does not necessarily refer to the same embodiment.
For the sake of simplicity, the following omits the technical common sense known to a person skilled in the art.
As shown in fig. 1, the base station multi-loop electric meter includes an electric meter body, on which a communication interface is integrated for implementing information interaction; the access interface is used for inputting a mains supply state signal and/or an oil engine state signal; the switching value input and output interface is used for transmitting the switching state of the equipment; the electric energy pulse output interface is used for outputting electric energy information; the detection interfaces are used for acquiring three-phase voltage signals and/or three-phase alternating current loop current signals; wherein, the interfaces are connected with a singlechip in the ammeter body.
In specific implementation, the interface connections can be respectively realized through corresponding 5.08 plug-in type wiring terminals; in actual work, a three-phase voltage signal and/or a three-phase alternating current loop current signal are/is acquired and transmitted to the single chip microcomputer through the detection interface, a mains supply state signal and/or an oil engine state signal can be input through the access interface and transmitted to the single chip microcomputer, the collected data information is uploaded through the communication interface connected with the single chip microcomputer, and the data information transmitted by the communication interface is received by the external background and is monitored.
The base station multi-loop electric meter can monitor the voltage, current and other electrical parameter information of a three-phase loop and upload the information through a communication interface, so that the subsequent real-time electric quantity metering is facilitated; the single chip microcomputer is connected with a storage unit, so that information can be stored conveniently for subsequent taking and checking; meanwhile, the remote monitoring of the oil engine, the commercial power state and the like can be realized through the arrangement of the access interface; the method realizes the subentry acquisition and measurement of each power circuit of the base station, and uploads the subentry acquisition and measurement to a rear-end platform through a communication interface, thereby realizing the effective management of the base station in a localized manner.
In specific implementation, signals of a mains supply switch state, an oil engine switch state, a lightning protection device fault and a lightning protection device idle-on state can be collected through corresponding switch quantity input interfaces of the electric meter, then are transmitted to the single chip microcomputer and are uploaded to the rear-end platform through the communication interface, and therefore the remote signaling warning function of the electric meter is achieved; meanwhile, after receiving the signal, the rear-end platform can send the signal to the single chip microcomputer through the communication port and transmit the signal to a mains supply switch connected with the single chip microcomputer through the switching value output interface, so that the on-off control of the mains supply is realized; the functions of power supply quality abnormity warning, information interaction and the like are realized, and the base station is locally and effectively managed.
The base station multi-loop electric meter is integrated and reasonably arranged by effectively selecting each port, has strong functions and higher cost performance, and can be suitable for monitoring different loops in the same three-phase four-wire system voltage system; the structure is novel as a whole, the cost is low, and the production and the installation are convenient; the system can help the iron tower to improve the power distribution management level, solve the practical difficulty in operation and maintenance and ensure the efficient and stable operation of the iron tower base station; in specific implementation, the rear shell of the base station multi-loop electric meter can adopt a guide rail piece, and the guide rail piece is installed in a guide rail way, so that the base station multi-loop electric meter has the effects of convenience and rapidness in installation and maintenance.
The base station multi-loop ammeter has the functions of real-time electricity metering, abnormal power supply quality alarming, information storage, interaction and the like through effective selection integration and reasonable arrangement of each port, meets the construction target and the use requirement of a power environment monitoring system of a base station of China iron tower company Limited, and can be matched with an AC distribution box of the base station of China iron tower company Limited for use.
The utility model discloses a preferred embodiment does: the electric meter body is integrated with a voltage acquisition unit and a current acquisition unit which are connected with the detection interface, a communication unit which is connected with the communication interface, a commercial power and oil engine detection unit which is connected with the access interface, and a switching value input and output control unit which is connected with the switching value input and output interface, and the units are all connected with the single chip microcomputer.
Specifically, the detection interface includes a wiring port that is connected with voltage acquisition unit, is used for gathering three-phase voltage signal to and four external ports that are connected with current acquisition unit, are used for gathering 4 three-phase alternating current return circuit electrical parameters, and external port is external to have a plurality of mutual-inductors for detect three-phase return circuit's electrical parameter, specifically include frequency, electric current, active power, reactive power, power factor, active electric quantity and reactive electric quantity.
As shown in fig. 3, the three-phase voltage signals are sampled and collected by the voltage collecting unit shown in fig. 3; the voltage acquisition unit comprises a resistor R48, a resistor R45, a resistor R40 and a capacitor C28, wherein the resistor R48 is connected with the resistor R45 in series, the other end of the resistor R45 is connected with one end of the resistor R40 and one end of the capacitor C28, and the other end of the resistor R40 is connected with the other end of the capacitor C28.
As shown in fig. 4 to 7, the current signals of 4 three-phase ac loop currents are collected by an external current transformer; fig. 4 schematically shows a first-channel circuit schematic diagram of the current collection unit, fig. 5 schematically shows a second-channel circuit schematic diagram of the current collection unit, fig. 6 schematically shows a three-channel circuit schematic diagram of the current collection unit, and fig. 7 schematically shows a four-channel circuit schematic diagram of the current collection unit; the core device of the three-phase current acquisition unit is a three-phase electric energy processing chip RN 8302.
The utility model discloses a preferred embodiment does: the switching value input interface is 4 dry contact input ports which are respectively used for accessing a mains supply switching state, an oil engine switching state, a lightning protection device fault state and a lightning protection device idle-on state signal, and the switching value output interface is 1 contact output port which is used for controlling the switching of a mains supply; the access interface comprises 1 mains supply detection wet contact input port used for accessing a mains supply working state signal and 1 oil engine detection wet contact input port used for accessing an oil engine working state signal.
As shown in fig. 11, the switching value input interface mainly includes a chip with a model PC817, for example, a U6, AN port of the chip is connected to a resistor R12, a CA port is connected to ground, and a CO port is connected to a resistor R3 and connected to a voltage input and a signal at the same time; signals of a mains supply switch state, an oil engine switch state, a lightning protection device fault and a lightning protection device idle-on state are respectively acquired through corresponding switch quantity input interfaces of the electric meter, then are transmitted into the single chip microcomputer shown in the figure 8 through a switch quantity input unit, and are uploaded through a communication interface, so that a remote signaling alarm function of the electric meter is realized; meanwhile, after the rear-end platform receives the signal, the signal can be sent to the single chip microcomputer through the communication port and transmitted to the mains supply switch connected with the single chip microcomputer through the switching value output interface, and therefore the on-off control of the mains supply is achieved.
The switching value output interface mainly comprises a relay U4 with the model of HRSIH-5, ports 1 and 6 of a relay U4 are connected with an alternating current contactor, a port 3 is connected with a normally-open reset switch, a port 2 of the relay U4 is connected with the anode of a diode D1 and the collector of an NPN type triode, the emitter of the triode is grounded and connected with one end of a resistor R16, the base of the triode is connected with one end of a resistor R11, the other end of the resistor R11 is connected with the other end of the resistor R16, and the cathode of the diode D1 is connected with a port 5 of a relay U4.
As shown in fig. 12, the commercial power and oil engine unit includes a chip with a PC817 model, AN port of the chip is connected in series with resistors R2-R10 and a diode D3, a CO port of the chip is connected with a resistor R1 and connected in parallel with a power supply for input, and the circuit of the commercial power unit is the same as that of the oil engine unit; the commercial power and oil engine signals are input through the access interface of the electric meter, processed by the corresponding commercial power and oil engine units, then transmitted into the single chip microcomputer shown in figure 8, and uploaded through the communication interface, and the working state detection of the commercial power and the oil engine of the electric meter is realized. Specifically, the base station multi-loop electric meter is provided with 1 DO interface (for a fixed oil engine) and 6 DI interfaces (for a mains supply switch state, an oil engine switch state, a lightning protection device fault, a lightning protection device idle switch state, a mains supply state and an oil engine power supply state) and is used for alarming of upper and lower voltage limits, upper and lower frequency limits and the like.
The utility model discloses a preferred embodiment does: as shown in fig. 8, in a specific implementation, the single chip microcomputer may be a single chip microcomputer of a model STM32F103RBT6, an OSC _ I port of the single chip microcomputer is connected to a port 1 of the crystal oscillator and is connected to a capacitor C11, an OSC _ O port of the single chip microcomputer is connected to a port 2 of the crystal oscillator and is connected to a capacitor C10, and both the capacitor C11 and the capacitor C10 are grounded. The NRST port of the singlechip is connected with one end of a resistor R12, and the other end of the resistor R12 is connected with voltage; one end of the resistor R12 is connected with one end of the capacitor C12, and the other end of the capacitor C12 is grounded; the BOOT0 port of the singlechip is connected with one end of the resistor R10, and the other end of the resistor R10 is grounded.
The BAT port of the singlechip is connected with a capacitor C8, an electrolytic capacitor C13, an electrolytic capacitor C14, a capacitor C9, a capacitor C15 and a capacitor C16 which are connected in parallel and grounded; the single chip microcomputer shown in fig. 8 controls the sensor to collect data such as voltage, current, electric energy and the like measured by the sensor, stores the data according to a set protocol requirement, and outputs the data to an external reading device through a communication interface; the number of the electric energy pulse output interfaces connected with the single chip microcomputer is four, and the electric energy pulse output interfaces are used for outputting electric energy information of 4 three-phase alternating current loops.
The utility model discloses a preferred embodiment does: the electric meter body is provided with a liquid crystal display screen, and the liquid crystal display screen is connected with the single chip microcomputer through a signal transmission line; as shown in fig. 13, the electric meter adopts a liquid crystal display mode, and the functions of on-site real-time data, real-time alarm query (equipment self fault, power supply system voltage/frequency out-of-limit, mains supply phase failure, mains supply power failure) and parameter setting (communication parameters such as address, baud rate and verification mode, alarm threshold parameters such as voltage, frequency upper and lower limits and manufacturer information) of the electric meter can be realized through the circuit (core device JLX128 12864G-132-PN (5V) display module).
The singlechip is connected with a clock chip with the model number of DS 1302Z; as shown in fig. 9, the clock and data information storage unit circuit works through core devices (crystal oscillator 32.768K, clock chip DS1302Z and storage chip SST26VF032B) in the circuit, thereby realizing the storage function of historical power data and historical alarm information. When the clock unit needs to be calibrated, the ammeter can be remotely calibrated through the monitoring center through the RS485 communication interface.
An X1 port of the clock chip DS1302Z is connected with a No. 2 port of the crystal oscillator and one end of a capacitor C5, an X2 port of the clock chip DS1302Z is connected with a No. 1 port of the crystal oscillator and one end of a capacitor C7, and the other end of the capacitor C5 and the other end of the capacitor C7 are both grounded; the SCK port of the clock chip DS1302Z is connected with a resistor R5, the I/O port of the clock chip DS1302Z is connected with a resistor R6, the resistor R5 and the resistor R6 are externally connected with a power supply input, the VCC1 port of the clock chip DS1302Z is connected with one end of a capacitor C6 and the positive electrode of a starting power supply BT1, and the other end of the capacitor C6 and the negative electrode of the starting power supply BT1 are grounded.
The utility model discloses a preferred embodiment does: as shown in fig. 2, the electric energy meter further comprises a power interface for inputting a power supply to be used by each electric element of the electric energy meter body; the power interface inputs DC48V power, and the DC-DC converter connected with the power interface converts DC48V into 2-path DC5V power, and provides DC5V working voltage for each electric element in the electric meter body respectively.
The utility model discloses a preferred embodiment does: the communication interface is an RS-485 communication interface and communicates with an upper computer of the base station monitoring center according to YD/T1363 communication protocol through an RS485 chip with the model of MAX485 ESA. As shown in fig. 10, the RS485 chip MAX485ESA works to communicate with the upper computer of the monitoring center of the base station according to YD/T1363 communication protocol, thereby realizing functions of remote measurement, remote signaling and remote control and performing information interaction. The RS485 communication interface is selected as the communication interface, the baud rate can be set, and the communication protocol meets the related requirements of YD/T1363 'communication bureau (station) power supply, air conditioner and environment centralized monitoring management system' and standard MODBUS protocol.
The utility model discloses a preferred embodiment does: the memory cell is a memory chip with model number SST26VF032B, as shown in fig. 9, a VDD port of the memory chip is connected in parallel with a capacitor C1 and a capacitor C2, and is grounded; specifically, the device has a storage function of historical electric quantity data and historical alarm information, 5000 pieces of historical data (step length of 15min) can be recorded and frozen at regular time, 24 meter reading days are frozen, and 500 pieces of historical alarms are stored in real time.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A kind of basic station multiloop ammeter, characterized by that: including the ammeter body, integrated on the ammeter body have the communication interface that is used for realizing the information interaction, be used for inputing commercial power state signal and/or oily machine state signal's access interface, be used for the switching value input and the output interface of transmission equipment on-off state, be used for exporting electric energy information's electric energy pulse output interface and a plurality of are used for gathering three-phase voltage signal and/or are used for gathering the detection interface of three-phase alternating current return circuit current signal, above-mentioned the interface all with this internal singlechip of ammeter is connected, the singlechip is connected with a memory cell.
2. The base station multi-loop electricity meter of claim 1, wherein: the ammeter is integrated with voltage acquisition unit and current acquisition unit with detection interface connection in this internal, with communication interface connection's communication unit, with the commercial power of access interface connection, oily machine detecting element to reach switching value input, the output control unit with switching value input and output interface connection, just the aforesaid the unit all with the singlechip is connected.
3. The base station multi-loop electricity meter of claim 1, wherein: the electric meter body is provided with a liquid crystal display screen, and the liquid crystal display screen is connected with the single chip microcomputer through a signal transmission line; the single chip microcomputer is connected with a clock chip with the model number of DS 1302Z.
4. The base station multi-loop electricity meter of claim 1, wherein: the detection interface comprises a wiring port connected with the voltage acquisition unit and used for acquiring three-phase voltage signals, and four external ports connected with the current acquisition unit and used for acquiring electrical parameters of 4 three-phase alternating current loops, wherein the external ports are externally connected with a plurality of mutual inductors.
5. The base station multi-loop electricity meter of claim 1, wherein: the electric meter also comprises a power interface which is used for inputting power and is used by each electric element of the electric meter body; the power interface inputs a DC48V power supply, the DC-DC converter connected with the power interface converts DC48V into 2-path DC5V power supplies, and DC5V working voltage is respectively provided for each electric element in the electric meter body.
6. The base station multi-loop electricity meter of claim 1, wherein: and four electric energy pulse output interfaces connected with the single chip microcomputer are used for outputting electric energy information of 4 three-phase alternating current loops.
7. The base station multi-loop electricity meter of claim 1, wherein: the switching value input interface is 4 dry contact input ports that are used for inserting commercial power on-off state, oily machine on-off state, lightning protection device fault state, lightning protection device empty switch-on state signal respectively, switching value output interface is 1 contact output port that is used for controlling the commercial power and opens and shuts.
8. The base station multi-loop electricity meter of claim 1, wherein: the access interface comprises 1 mains supply detection wet contact input port used for accessing a mains supply working state signal and 1 oil engine detection wet contact input port used for accessing an oil engine working state signal.
9. The base station multi-loop electricity meter of claim 1, wherein: the communication interface is an RS-485 communication interface and communicates with an upper computer of the base station monitoring center according to YD/T1363 communication protocol through an RS485 chip with the model of MAX485 ESA.
10. The base station multi-loop electricity meter of claim 1, wherein: the storage unit is a storage chip with the model number SST26VF 032B.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112730974A (en) * | 2020-12-28 | 2021-04-30 | 无锡尼尔维斯电气系统有限公司 | Multi-loop electric energy monitoring system and collection box provided with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112730974A (en) * | 2020-12-28 | 2021-04-30 | 无锡尼尔维斯电气系统有限公司 | Multi-loop electric energy monitoring system and collection box provided with same |
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