CN112558122B - Beidou communication device - Google Patents

Beidou communication device Download PDF

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Publication number
CN112558122B
CN112558122B CN202011422307.2A CN202011422307A CN112558122B CN 112558122 B CN112558122 B CN 112558122B CN 202011422307 A CN202011422307 A CN 202011422307A CN 112558122 B CN112558122 B CN 112558122B
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China
Prior art keywords
capacitor
resistor
chip
pin
current limiting
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Application number
CN202011422307.2A
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Chinese (zh)
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CN112558122A (en
Inventor
李航
刘延泽
王桐
殷超
达尔罕
毛永梅
张勇
钱进
李欣
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Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
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Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
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Priority to CN202011422307.2A priority Critical patent/CN112558122B/en
Publication of CN112558122A publication Critical patent/CN112558122A/en
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/34—Power consumption
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G01R22/061—Details of electronic electricity meters
    • G01R22/063—Details of electronic electricity meters related to remote communication
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention discloses a Beidou communication device which comprises an MCU chip, a current limiting circuit, an energy storage component, a boosting circuit and an RDN module, wherein the MCU chip is connected with the current limiting circuit; when the RDN module does not upload the electric power metering data, the energy storage component acquires electric energy through the current limiting circuit and stores the electric energy; when the RDN module transmits the uploaded electric power metering data, the energy storage component and the current limiting circuit simultaneously serve as the RDN module through the boost circuit. The Beidou communication device provided by the application can provide energy for the RDN module to send signals instantly only by utilizing the low-voltage function of the acquisition terminal interface, so that the Beidou communication device can be installed in the electric power metering terminal in an adaptation mode, the power grid function is not needed to be installed in an externally-hung mode, and further the operation of a power grid is not needed to be stopped when the communication device is replaced, and the influence of updating of communication hardware equipment on the operation of the power grid is reduced to the greatest extent.

Description

Beidou communication device
Technical Field
The invention relates to the technical field of Beidou communication, in particular to a Beidou communication device.
Background
With the development of the Beidou satellite communication technology, in various communication fields, beidou communication equipment is gradually adopted to replace the existing network communication technologies such as GPS communication, 4G public network communication and the like. In order to update the communication technology, the corresponding hardware equipment must be updated, in the process of updating the communication hardware equipment, related equipment which originally uses the communication hardware equipment may need to be stopped, but in industries such as a power grid, the power grid equipment basically needs to operate continuously for 24 hours, and the longer the time of stopping operation, the larger the economic loss caused to industrial production of various industries is.
Disclosure of Invention
The invention aims to provide the Beidou communication device, which can directly provide working electric energy through the electric power metering terminal, does not need to directly supply power through a power grid, and can avoid the power grid from stopping running during configuration and installation, thereby reducing the influence on the power consumption of a user during the installation and maintenance of Beidou communication equipment.
In order to solve the technical problems, the invention provides a Beidou communication device which comprises an MCU chip, a current limiting circuit, an energy storage component, a boosting circuit and an RDN module;
the input end of the MCU chip is connected with the acquisition terminal interface, the output end of the MCU chip is connected with the signal input end of the RDN module, and the MCU chip is used for acquiring electric power metering data acquired by the electric power metering terminal through the acquisition terminal interface and outputting and uploading the electric power metering data through the RDN module;
the input end of the current limiting circuit is connected with the acquisition terminal interface and is used for obtaining power supply electric energy through the acquisition terminal interface and outputting the power supply electric energy according to the current which does not exceed the preset current;
the input ends of the energy storage component and the boost circuit are connected with the output end of the current limiting circuit together; the output end of the boost circuit is connected with the power supply input end of the RDN module;
when the RDN module does not upload the electric power metering data, the energy storage component acquires and stores electric energy through the current limiting circuit; when the RDN module transmits and uploads the electric power metering data, the energy storage component and the current limiting circuit simultaneously provide electric energy for the RDN module through the voltage boosting circuit.
Optionally, the current limiting circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a TPS2223DBVT chip;
the first end of the first resistor R1, the first end of the third resistor R3 and the IN pin of the TPS2223DBVT chip are electrically connected with the acquisition terminal interface; a second end of the first resistor R1 and a first end of the second resistor R2 are connected with a FAULT pin of the TPS2223DBVT chip; the second end of the second resistor R2 is grounded; the second end of the third resistor R3 is connected with the first end of the fourth resistor R4, and the first end of the fifth resistor R5 is connected with the EN pin of the TPS2223DBVT chip; the second end of the fourth resistor R4 is grounded; the second end of the fifth resistor R5 is connected with the output end of the MCU chip; the first end of the sixth resistor R6 is connected with the ILIM pin; the output pin of the TPS2223DBVT chip is connected with the first end of the energy storage component and the input end of the booster circuit.
Optionally, the energy storage component is a first capacitor C1; the first end of the first capacitor C1 is connected with the output end of the current limiting circuit, and the second end of the first capacitor C is grounded.
Optionally, the boost circuit includes a fifth capacitor C5, a seventh resistor R7, an eighth resistor R8, a sixth capacitor C6, a TPS61089RNR chip, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a seventh capacitor C7, and an eighth capacitor C8;
the SW pin of the TPS61089RNR chip, the first end of the fifth capacitor C5 and the first end of the eighth resistor R8 are connected with the output end of the current limiting circuit; the second end of the fifth capacitor C5 is connected with a BOOT pin of the TPS61089RNR chip; the second end of the eighth resistor R8 is connected with the FSW pin of the TPS61089RNR chip; the VIN pin of the TPS61089RNR chip is connected with the output end of the current limiting circuit; the EN pin of the TPS61089RNR chip is connected with the first end of the seventh resistor R7; the VCC pin of the TPS61089RNR chip is connected to the first end of the sixth capacitor C6, and the second end of the seventh resistor R7 and the second end of the sixth capacitor C6 are grounded; the first end of the ninth resistor R9 is connected with the ILIM pin of the TPS61089RNR chip, and the second end of the ninth resistor R9 is grounded; the first end of the seventh capacitor C7 and the first end of the eleventh resistor R11 are both connected to the COMP pin of the TPS61089RNR chip, the second end of the eleventh resistor R11 and the first end of the eighth capacitor C8 are both connected to ground, and the second end of the seventh capacitor C7 and the second end of the eighth capacitor C8 are both grounded; the first end of the tenth resistor R10 is connected to the VOUT pin of the TPS61089RNR chip, and the second end is connected to the FB pin of the TPS61089RNR chip and the first end of the twelfth resistor R12.
Optionally, the circuit further comprises a first filter circuit and a second filter circuit;
the first filter circuit is arranged between the input end of the energy storage component and the input end of the boost circuit; the second filter circuit is arranged between the output end of the boost circuit and the power supply input end of the RDN module.
Optionally, the first filter circuit includes a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and an inductance element L;
the first end of the second capacitor C2, the first end of the third capacitor C3, the first end of the fourth capacitor C4, the first end of the inductance element L, and the VIN pin of the TPS61089RNR chip are all connected with the output end of the current limiting circuit; the second end of the second capacitor C2, the second end of the third capacitor C3 and the second end of the fourth capacitor C4 are commonly grounded; the second end of the inductance element L is connected with the SW pin of the TPS61089RNR chip, the first end of the fifth capacitor C5 and the first end of the eighth resistor R8;
the second filter circuit includes a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, and a thirteenth capacitor C13, where the first ends are commonly connected to the output end of the boost circuit, and the second ends are grounded.
Optionally, the device further comprises a protection circuit arranged between the acquisition terminal interface and the current limiting circuit.
Optionally, the protection circuit includes a diode D, a fourteenth capacitor C14, a fifteenth capacitor C15, and a TVB tube; the anode of the diode D is connected with the acquisition terminal interface, and the cathode of the diode D is connected with the input end of the current limiting circuit, the fourteenth capacitor C14, the fifteenth capacitor C15 and the first end of the TVB tube; the fourteenth capacitor C14, the fifteenth capacitor C15 and the second end of the TVB pipe are all grounded.
The invention provides a Beidou communication device which comprises an MCU chip, a current limiting circuit, an energy storage component, a boosting circuit and an RDN module, wherein the MCU chip is connected with the current limiting circuit; the input end of the MCU chip is connected with the acquisition terminal interface, the output end of the MCU chip is connected with the signal input end of the RDN module, and the MCU chip is used for acquiring electric power metering data acquired by the electric power metering terminal through the acquisition terminal interface and outputting and uploading the electric power metering data through the RDN module; the input end of the current limiting circuit is connected with the acquisition terminal interface, and is used for obtaining power supply electric energy through the acquisition terminal interface and outputting the power supply electric energy according to the current which does not exceed the preset current; the input ends of the energy storage component and the booster circuit are connected with the output end of the current limiting circuit together; the output end of the booster circuit is connected with the power supply input end of the RDN module; when the RDN module does not upload the electric power metering data, the energy storage component acquires electric energy through the current limiting circuit and stores the electric energy; when the RDN module transmits the uploaded electric power metering data, the energy storage component and the current limiting circuit simultaneously serve as the RDN module through the boost circuit.
The RDN module of the Beidou communication device provided by the application uploads the electric power metering data at the moment of transmitting the Beidou short message communication signal, the required instantaneous voltage is larger, and the electric energy provided by the acquisition terminal interface is insufficient for supplying energy to the RDN module at the moment of transmitting the signal.
Therefore, the Beidou communication device provided by the application can provide energy for the RDN module to send signals instantly only by utilizing the low-voltage function of the acquisition terminal interface, so that the Beidou communication device can be installed in the electric power metering terminal in an adaptation mode, the power grid function is not needed to be installed in an externally-hung mode, and further the operation of a power grid is not needed to be stopped when the communication device is replaced, and the influence of updating of communication hardware equipment on the operation of the power grid is reduced to the greatest extent.
Drawings
For a clearer description of embodiments of the invention or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a Beidou communication device provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a partial circuit structure of the beidou communication device provided in the embodiment of the present application.
Detailed Description
In the normal operation process of the power grid, the electric power metering data generated in the operation process of the power grid is required to be collected through devices such as a ammeter and a voltmeter in real time, and the electric power metering terminal is powered on to upload the electric power metering data to the metering master station in a wireless communication mode.
When the traditional electric power metering terminal uploads electric power metering data, the built-in wireless communication module is mainly used for uploading the data through a 4G public network. The 4G public network is limited by factors such as topography due to base station laying, and cannot be fully covered in some remote areas. Therefore, the Beidou communication technology is adopted to replace the 4G public network to transmit the electric power metering data, and accordingly, the wireless communication device of the electric power metering terminal needs to be replaced.
Compared with the traditional wireless communication module for transmitting signals by using the 4G public network, the Beidou communication device needs higher power supply voltage at the moment of transmitting signals, but the traditional wireless communication module does not need. Therefore, to enable the Beidou communication device to normally transmit signals, the Beidou communication device needs to be connected with the electric power metering terminal in an externally hung mode, and the power supply source of the Beidou communication device is from a power grid. When the Beidou communication device is configured and installed, the power grid needs to be suspended, and obviously, the Beidou communication device is configured and has an excessive influence on the power grid operation.
Therefore, the technical scheme that the low-voltage electric energy output by the acquisition terminal interface of the electric power metering terminal can be directly utilized to realize normal signal transmission of the Beidou communication device is provided.
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a beidou communication device provided in an embodiment of the present application, and fig. 2 is a schematic structural diagram of a part of a circuit of the beidou communication device provided in an embodiment of the present application, where the beidou communication device may include:
the power supply comprises an MCU chip 1, a current limiting circuit 2, an energy storage component 3, a booster circuit 4 and an RDN module 5;
the input end of the MCU chip 1 is connected with the acquisition terminal interface 6, the output end of the MCU chip 1 is connected with the signal input end of the RDN module 5, and the MCU chip is used for acquiring electric power metering data acquired by the electric power metering terminal through the acquisition terminal interface 6 and outputting and uploading the electric power metering data through the RDN module 5;
the acquisition terminal interface 6 in this embodiment refers to an interface in the electric power metering terminal and connected with the Beidou communication device in a communication manner, and meanwhile supplies power to the Beidou communication device and transmits electric power metering data to the north bucket communication device.
The input end of the current limiting circuit 2 is connected with the acquisition terminal interface 6, and is used for obtaining power supply electric energy through the acquisition terminal interface 6 and outputting the power supply electric energy according to the current which does not exceed the preset current.
Because big dipper communication device's electric energy comes from electric power metering terminal, if the power supply current of collection terminal interface to big dipper communication device input is too big, can lead to electric power metering terminal self power supply not enough and unable work, for this, limit the current size of collection terminal interface 6 big dipper communication device power supply electric energy through current limiting circuit, be favorable to guaranteeing the stability of electric power metering terminal work.
The input ends of the energy storage component 3 and the booster circuit 4 are connected with the output end of the current limiting circuit 2; the output end of the booster circuit 4 is connected with the power supply input end of the RDN module 5;
when the RDN module 5 does not upload the electric power metering data, the energy storage component 3 acquires electric energy through the current limiting circuit 2 and stores the electric energy; when the RDN module 5 transmits the uploaded power metering data, the energy storage component 3 and the current limiting circuit 1 simultaneously provide the instantaneous power required for transmitting the signal to the RDN module 5 through the boost circuit 4.
The power supply power output by the acquisition terminal interface 6 is generally relatively low, which is approximately 5V. The supply voltage required by the RDN module 5 in the normal state is 8V, and for this purpose, the 5V voltage needs to be boosted by the booster circuit 4 to provide the RDN module 5 with electric energy.
In addition, for the instant current flowing to the RDN module 5 increases at the instant of transmitting the beidou communication signal by the RDN module 5, the voltage at the end of the RDN module 5 decreases at the instant, and the booster circuit 4 is connected with the RDN module 5, so that larger electric energy is required to be obtained from the input end of the booster circuit 4 to boost the voltage at the end of the RDN module 5, so that the power supply electric energy required at the instant of transmitting the signal by the RDN module 5 is relatively larger, but the electric energy output at the instant of the port 6 of the acquisition terminal needs to be kept stable, so that the normal operation of the electric power metering terminal is ensured, and the instant high-energy electric energy cannot be provided for the RDN module 5.
Therefore, the energy storage component 3 can be arranged at the output end of the current limiting circuit 2, when the RDN module 5 does not emit signals, the energy storage component 3 is used as an energy consumption component to charge by utilizing the electric energy output by the output end of the current limiting circuit 2, and when the RDN module 5 emits signals after the charging is completed, the energy storage component 3 is used as an energy supply component and the electric energy output by the current limiting circuit 2 to supply power for the RDN module 5 together, so that the RDN module 5 can output Beidou communication signals to complete the transmission of electric power metering data.
To sum up, the big dipper communication module that provides in this application can only utilize the electric energy of the less voltage that the electric power metering terminal provided to realize the signal transmission of RDN module, consequently this big dipper communication module can be built-in electric power metering terminal inside, need not to directly supply power for big dipper communication module through the electric wire netting, then dispose the installation and when maintaining the maintenance to big dipper communication module, just need not to pause the electric wire netting operation, avoided to a great extent to pause the influence that the electric wire netting operation brought industrial production. Therefore, the Beidou communication module can update the power metering terminal communication technology to a certain extent, avoid the power grid to pause operation to the greatest extent, and further avoid the unchanged and economic loss caused by power consumption of a user when updating the Beidou communication device.
Each partial circuit of the beidou communication module in the present application will be described in detail below.
In an alternative embodiment of the present application, the current limiting circuit 2 of the beidou communication device may include:
a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a TPS2223DBVT chip;
the first end of the first resistor R1, the first end of the third resistor R3 and the IN pin of the TPS2223DBVT chip are electrically connected with the acquisition terminal interface 6;
the second end of the first resistor R1 and the first end of the second resistor R2 are connected with the FAULT pin of the TPS2223DBVT chip; the second end of the second resistor R2 is grounded;
the second end of the third resistor R3 is connected with the first end of the fourth resistor R4, and the first end of the fifth resistor R5 is connected with the EN pin of the TPS2223DBVT chip; the second end of the fourth resistor R4 is grounded;
the second end of the fifth resistor R5 is connected with the output end of the MCU chip; the first end of the sixth resistor R6 is connected with the ILIM pin;
the output pin of the TPS2223DBVT chip is connected with the first end of the energy storage component 3 and the input end of the boost circuit 4.
Referring to fig. 2, a vcc_in1 terminal IN fig. 2 is a port where the beidou communication device is connected to the acquisition terminal interface 6, and the acquisition terminal interface 6 inputs a power supply voltage to an IN pin of the TPS2223DBVT chip through the vcc_in1 terminal; the output end OUT pin of the TPS2223DBVT chip outputs electric energy with the current magnitude not exceeding the preset current magnitude, and the preset current magnitude can be between 500mA and 600 mA. Referring to fig. 2, the output terminal OUT pin of the TPS2223DBVT chip is the output terminal of the current limiting circuit 2.
And, the EN pin of TPS2223DBVT chip is connected with the MCU chip through vcc_in2 terminal, and this EN pin is equivalent to the switch pin of TPS2223DBVT chip, when the MCU chip inputs the enable signal through fifth resistor R5, then TPS2223DBVT chip starts work, otherwise TPS2223DBVT chip does not work. Of course, the TPS2223DBVT chip should be continuously kept in an operating state under normal conditions. IN addition, because the working voltage of the MCU chip is 3.3V, the output enable voltage signal is insufficient to start the TPS2223DBVT chip to work, and therefore, a pull-up resistor, that is, a third resistor R3 is further connected to the EN pin, and is connected through the third resistor R3 and the vcc_in1 terminal, when the MCU chip inputs the enable voltage to the EN pin of the TPS2223DBVT chip, the enable voltage can be pulled up to about 5V of the enable voltage required by the TPS2223DBVT chip due to the pull-up action of the third resistor R3.
Of course, for the TPS2223DBVT chip to function properly, its FAULT pin and ILIM pin also need to be connected to respective electrical signals. Thus, as shown IN fig. 2, the first terminal of the first resistor R1 is electrically connected to the vcc_in1 terminal; the FAULT pin is connected with the second end of the first resistor R1 and the first end of the second resistor R2, the second end of the second resistor R2 is grounded, and the ILIM pin of the TPS2223DBVT chip is grounded through the sixth resistor R6, so that the normal working requirement of the TPS2223DBVT chip is met.
Referring to fig. 1, for the MCU chip, it is also required that the power output through the output terminal of the current limiting circuit 2 is supplied through the first LDO module 7, and in conjunction with fig. 2, the current limiting circuit 2 is connected to the first LEDO module 7 through the vcc_out2 terminal in fig. 2, and supplies power to the MCU chip 1 through the first LDO module 7.
In the Beidou communication device, the input end of the current limiting circuit 2 can be directly connected with the acquisition terminal interface 6, but in order to ensure the safety of the circuit, in an alternative embodiment of the application, a protection circuit 11 can be further arranged between the acquisition terminal interface 6 and the current limiting circuit 2. The protection circuit 11 includes:
a diode D, a fourteenth capacitor C14, a fifteenth capacitor C15, and a TVB tube;
the anode of the diode D is connected with the acquisition terminal interface 6, and the cathode is connected with the input end of the current limiting circuit 1, the fourteenth capacitor C14, the fifteenth capacitor C15 and the first end of the TVB tube;
the fourteenth capacitor C14, the fifteenth capacitor C15, and the second end of the TVB pipe are all grounded.
The positive pole of diode D is connected with acquisition terminal interface 6, and the negative pole is connected with the input of current-limiting circuit, fourteenth electric capacity C14, fifteenth electric capacity C15 and the first end of TVB pipe, avoids big dipper communication device's electric current reverse inflow to acquisition terminal interface 6. The fourteenth capacitor C14, the fifteenth capacitor C15 and the TVB tube are connected in parallel, so that clutter filtering is carried out to a certain extent, and the stability of the circuit operation of the whole Beidou communication device is ensured.
Alternatively, in another embodiment of the present application, the energy storage component may use a capacitive element, such as a first capacitor C1 shown in fig. 2, where a first end of the first capacitor C1 is connected to the output end of the current limiting circuit 2, and a second end is grounded. When the output end of the current limiting circuit 2 outputs the current limiting voltage, the first capacitor C1 can be charged, so that the first capacitor C1 stores electric energy.
In order to ensure that the first capacitor C1 stores enough power to provide enough power for the moment when the RDN module 5 transmits signals, the first capacitor C1 should use a capacitor element with a higher energy storage capability, for example, a capacitor capable of storing 5.5v and 5f may be used.
Of course, embodiments employing other similar energy storage components are not precluded during actual use.
In another alternative embodiment of the present application, the boost circuit may include:
a fifth capacitor C5, a seventh resistor R7, an eighth resistor R8, a sixth capacitor C6, a TPS61089RNR chip, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a seventh capacitor C7, and an eighth capacitor C8;
the SW pin of the TPS61089RNR chip, the first end of the fifth capacitor C5 and the first end of the eighth resistor R8 are connected with the output end of the current limiting circuit 2;
the second end of the fifth capacitor C5 is connected with a BOOT pin of the TPS61089RNR chip;
the second end of the eighth resistor R8 is connected with the FSW pin of the TPS61089RNR chip;
the VIN pin of the TPS61089RNR chip is connected with the output end of the current limiting circuit 2;
the EN pin of the TPS61089RNR chip is connected with the first end of the seventh resistor R7;
the VCC pin of the TPS61089RNR chip is connected with the first end of the sixth capacitor C6, and the second end of the seventh resistor R7 and the second end of the sixth capacitor C6 are grounded;
the first end of the ninth resistor R9 is connected with the ILIM pin of the TPS61089RNR chip, and the second end is grounded;
the first end of the seventh capacitor C7 and the first end of the eleventh resistor R11 are both connected with the COMP pin of the TPS61089RNR chip, the second end of the eleventh resistor R11 is connected with the first end of the eighth capacitor C8, and the second end of the seventh capacitor C7 and the second end of the eighth capacitor C8 are both grounded;
the first end of the tenth resistor R10 is connected with the VOUT pin of the TPS61089RNR chip, and the second end is connected with the FB pin of the TPS61089RNR chip and the first end of the twelfth resistor R12. The VOUT pin of the TPS61089RNR chip is the output terminal of the booster circuit 4.
Referring to fig. 2, the input end of the TPS61089RNR chip, i.e. the VIN pin, is connected to the output end of the current limiting circuit 2, and the current limiting current output by the current limiting circuit 2 is output from the output end of the TPS61089RNR chip, i.e. the VOUT pin, through the boosting effect of the TPS61089RNR chip, to supply power to the RDN module 5. In general, the current limiting circuit 5 outputs a current limiting voltage of about 5V to the VIN pin of the TPS61089RNR chip, and the TPS61089RNR chip can raise the voltage to about 8V and output the voltage. Of course, the RDN module 5 requires an operating voltage that is not just one operating voltage. With reference to fig. 1, the required working voltages of the RDN module include three working voltages of 8V, 3.3V and 1.8V, so, referring to fig. 1, one path of the power supply voltage output by the output end of the tps61089rnr chip is directly connected to the RDN module 5, one path of the power supply voltage is divided into two paths of voltage signals by the DC-DC module 8, one path of the voltage signal is output by the second LDO module 9 to form a 3.3V voltage signal, and the other path of the voltage signal is output by the third LDO module 10 to form a 1.8V voltage signal, and the 3.3V voltage signal and the 1.8V voltage signal are respectively input to the RDN module for the RDN module 5 to work normally.
It should be noted that, the circuit formed by the connection of the circuit elements lower than the fifth capacitor C5, the seventh resistor R7, the eighth resistor R8, the sixth capacitor C6, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the seventh capacitor C7, the eighth capacitor C8, etc. is a conventional circuit for ensuring the normal operation of the TPS61089RNR chip, and will not be described in detail.
Further, in order to avoid unnecessary interference of the spurious electric signal in the current-limited voltage input by the current-limiting circuit 2 in the normal operation of the booster circuit 4, a first filter circuit 12 may be provided between the current-limiting circuit 2 and the booster circuit 4.
The first filter circuit 12 may include a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and an inductance element L;
the first end of the second capacitor C2, the first end of the third capacitor C3, the first end of the fourth capacitor C4, the first end of the inductance element L and the VIN pin of the TPS61089RNR chip are all connected with the output end of the current limiting circuit 2;
the second end of the second capacitor C2, the second end of the third capacitor C3 and the second end of the fourth capacitor C4 are commonly grounded;
the second end of the inductance element L is connected with the SW pin of the TPS61089RNR chip, the first end of the fifth capacitor C5 and the first end of the eighth resistor R8;
referring to fig. 2, the first ends of the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 are connected in parallel and then connected in series with the inductance element L, where the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 should use capacitors with different magnitudes, for example, the second capacitor C2 and the third capacitor C3 each use a 22 μf capacitor, the fourth capacitor C4 uses a 100 μf capacitor, and the inductance element L uses an inductance of 1 μh. Clutter signals with different frequencies and sizes can be filtered through the cooperation of the second capacitor C2, the third capacitor C3, the fourth capacitor C4 and the inductance element L, and stable transmission of electric signals is facilitated.
In order to achieve a better filtering effect, a second filtering circuit 13 may be further arranged between the current limiting circuit and the RDN module. The second filter circuit 3 may include:
the second filter circuit 13 includes four capacitors connected in parallel, as shown in fig. 2, a first end of the ninth capacitor C9, the tenth capacitor C10, the eleventh capacitor C11, the twelfth capacitor C12, and the thirteenth capacitor C13 are commonly connected to the output end of the boost circuit 4, and second ends are all grounded.
Five capacitors of 22 μf, 100 μf, etc. may be used for the ninth capacitor C9, tenth capacitor C10, eleventh capacitor C11, twelfth capacitor C12, and thirteenth capacitor C13, respectively. As shown in fig. 2, the voltage signal output from the output terminal of the booster circuit 4 is filtered by the second filter circuit 13 and then input to the RDN module through the vcc_out2 terminal.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is inherent to. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. In addition, the parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of the corresponding technical solutions in the prior art, are not described in detail, so that redundant descriptions are avoided.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims (7)

1. The Beidou communication device is characterized by comprising an MCU chip, a current limiting circuit, an energy storage component, a boosting circuit and an RDN module;
the input end of the MCU chip is connected with the acquisition terminal interface, the output end of the MCU chip is connected with the signal input end of the RDN module, and the MCU chip is used for acquiring electric power metering data acquired by the electric power metering terminal through the acquisition terminal interface and outputting and uploading the electric power metering data through the RDN module;
the input end of the current limiting circuit is connected with the acquisition terminal interface and is used for obtaining power supply electric energy through the acquisition terminal interface and outputting the power supply electric energy according to the current which does not exceed the preset current;
the input ends of the energy storage component and the boost circuit are connected with the output end of the current limiting circuit together; the output end of the boost circuit is connected with the power supply input end of the RDN module;
when the RDN module does not upload the electric power metering data, the energy storage component acquires and stores electric energy through the current limiting circuit; when the RDN module transmits and uploads the electric power metering data, the energy storage component and the current limiting circuit simultaneously provide electric energy for the RDN module through the boost circuit;
the boost circuit comprises a fifth capacitor C5, a seventh resistor R7, an eighth resistor R8, a sixth capacitor C6, TPS61089RNR chips, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a seventh capacitor C7 and an eighth capacitor C8;
the SW pin of the TPS61089RNR chip, the first end of the fifth capacitor C5 and the first end of the eighth resistor R8 are connected with the output end of the current limiting circuit; the second end of the fifth capacitor C5 is connected with a BOOT pin of the TPS61089RNR chip; the second end of the eighth resistor R8 is connected with the FSW pin of the TPS61089RNR chip; the VIN pin of the TPS61089RNR chip is connected with the output end of the current limiting circuit; the EN pin of the TPS61089RNR chip is connected with the first end of the seventh resistor R7; the VCC pin of the TPS61089RNR chip is connected to the first end of the sixth capacitor C6, and the second end of the seventh resistor R7 and the second end of the sixth capacitor C6 are grounded; the first end of the ninth resistor R9 is connected with the ILIM pin of the TPS61089RNR chip, and the second end of the ninth resistor R9 is grounded; the first end of the seventh capacitor C7 and the first end of the eleventh resistor R11 are both connected to the COMP pin of the TPS61089RNR chip, the second end of the eleventh resistor R11 and the first end of the eighth capacitor C8 are both connected to ground, and the second end of the seventh capacitor C7 and the second end of the eighth capacitor C8 are both grounded; the first end of the tenth resistor R10 is connected to the VOUT pin of the TPS61089RNR chip, and the second end is connected to the FB pin of the TPS61089RNR chip and the first end of the twelfth resistor R12.
2. The Beidou communication device according to claim 1, wherein the current limiting circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a TPS2223DBVT chip;
the first end of the first resistor R1, the first end of the third resistor R3 and the IN pin of the TPS2223DBVT chip are electrically connected with the acquisition terminal interface; a second end of the first resistor R1 and a first end of the second resistor R2 are connected with a FAULT pin of the TPS2223DBVT chip; the second end of the second resistor R2 is grounded; the second end of the third resistor R3 is connected with the first end of the fourth resistor R4, and the first end of the fifth resistor R5 is connected with the EN pin of the TPS2223DBVT chip; the second end of the fourth resistor R4 is grounded; the second end of the fifth resistor R5 is connected with the output end of the MCU chip; the first end of the sixth resistor R6 is connected with an ILIM pin of the TPS2223DBVT chip; the output pin of the TPS2223DBVT chip is connected with the first end of the energy storage component and the input end of the booster circuit.
3. The Beidou communication device according to claim 1, wherein the energy storage component is a first capacitor C1; the first end of the first capacitor C1 is connected with the output end of the current limiting circuit, and the second end of the first capacitor C is grounded.
4. The Beidou communication device of claim 1, further comprising a first filter circuit and a second filter circuit;
the first filter circuit is arranged between the input end of the energy storage component and the input end of the boost circuit; the second filter circuit is arranged between the output end of the boost circuit and the power supply input end of the RDN module.
5. The Beidou communication device according to claim 4, wherein the first filter circuit comprises a second capacitor C2, a third capacitor C3, a fourth capacitor C4 and an inductance element L;
the first end of the second capacitor C2, the first end of the third capacitor C3, the first end of the fourth capacitor C4, the first end of the inductance element L, and the VIN pin of the TPS61089RNR chip are all connected with the output end of the current limiting circuit; the second end of the second capacitor C2, the second end of the third capacitor C3 and the second end of the fourth capacitor C4 are commonly grounded; the second end of the inductance element L is connected with the SW pin of the TPS61089RNR chip, the first end of the fifth capacitor C5 and the first end of the eighth resistor R8;
the second filter circuit includes a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, and a thirteenth capacitor C13, where the first ends are commonly connected to the output end of the boost circuit, and the second ends are grounded.
6. The Beidou communication device of claim 1, further comprising a protection circuit disposed between the acquisition terminal interface and the current limiting circuit.
7. The Beidou communication device according to claim 6, wherein the protection circuit comprises a diode D, a fourteenth capacitor C14, a fifteenth capacitor C15 and a TVB type tube; the anode of the diode D is connected with the acquisition terminal interface, and the cathode of the diode D is connected with the input end of the current limiting circuit, the fourteenth capacitor C14, the fifteenth capacitor C15 and the first end of the TVB tube; the fourteenth capacitor C14, the fifteenth capacitor C15 and the second end of the TVB pipe are all grounded.
CN202011422307.2A 2020-12-08 2020-12-08 Beidou communication device Active CN112558122B (en)

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CN207134829U (en) * 2017-07-14 2018-03-23 北斗民用战略新兴产业（重庆）研究院有限公司 A kind of electric power management circuit of Big Dipper portable device RDSS functional modules

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