CN112399415A - Gateway enabling electric energy meter to be connected to network with low cost and easy operation - Google Patents
Gateway enabling electric energy meter to be connected to network with low cost and easy operation Download PDFInfo
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- CN112399415A CN112399415A CN202011141995.5A CN202011141995A CN112399415A CN 112399415 A CN112399415 A CN 112399415A CN 202011141995 A CN202011141995 A CN 202011141995A CN 112399415 A CN112399415 A CN 112399415A
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- 238000004891 communication Methods 0.000 claims abstract description 68
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 35
- 238000012795 verification Methods 0.000 claims description 8
- 229910052715 tantalum Inorganic materials 0.000 claims description 7
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 7
- 230000006855 networking Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 abstract description 16
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 238000013021 overheating Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 244000294611 Punica granatum Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/08—Access security
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/06—Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
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Abstract
The invention discloses a Gateway which is low in cost and easy to operate and enables an electric energy meter to be connected with a network, and the Gateway comprises a control module, a storage module, a power supply module, a 4G communication module and an RS485 communication module, wherein the storage module, the power supply module, the 4G communication module and the RS485 communication module are electrically connected with the control module. The device collects the data of the electric energy meter hung in the region of the device, and then the metering data of the electric energy meter is uploaded to a background master station system through a 4G communication module in the device, so that the collection of the electricity utilization information of users is completed; in the RS485 communication circuit, the first optical coupler and the second optical coupler are used for communication isolation, so that the control module is electrically isolated from the electric energy meters on each floor, and the first bidirectional voltage regulator tube and the thermistor are used for realizing overvoltage protection and overheating protection of the circuit, so that the reliability of communication is improved.
Description
Technical Field
The invention relates to the technical field of electric energy meters, in particular to a Gateway which is low in cost and easy to operate and enables an electric energy meter to be connected to a network.
Background
Electric energy meters with RS485 communication are intensively installed at fixed positions of each floor in a plurality of commercial office buildings, university dormitory buildings and staff dormitory buildings of large-scale companies for metering and settling the electric charges of users. According to the traditional scheme, RS485 buses are laid among floors, the RS485 buses are arranged at DCU positions with RS485 communication in power distribution rooms, the DCU collects power consumption data and other metering data of an electric meter through RS485 communication, the collected electric meter data are uploaded to a background master station system through communication modes such as PLC or GPRS (or 3G and 4G), and therefore automatic collection of the data of the whole power consumption system is achieved.
The traditional centralized reading scheme aiming at the RS485 table has the following defects:
1. RS485 wiring among different floors is troublesome, brings a certain workload to installation personnel, is not good in wiring, and can affect the attractiveness of the interior of each floor;
2. the traditional DCU is complex in design and inconvenient for operators to operate, and the operators need special training;
3. the traditional DCU is complex in design, so that the cost is high;
4. the DCU is more complicated to supply power, generally is three-phase four-wire power system, just so brings certain limitation for the system of gathering and copying of RS485 table.
Therefore, the Gateway which is low in cost and easy to operate and enables the electric energy meter to be connected into the network is provided.
Disclosure of Invention
The invention aims to provide a Gateway which is low in cost, easy to operate and capable of enabling an electric energy meter to be connected to a network, simple in power supply, wide in application range and simple to operate and maintain, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a Gateway which is low in cost and easy to operate and enables an electric energy meter to be connected to a network comprises a control module, a storage module, a power supply module, a 4G communication module and an RS485 communication module, wherein the storage module, the power supply module, the 4G communication module and the RS485 communication module are electrically connected with the control module;
the power supply module is used for supplying electric energy to the control module, the storage module, the 4G communication module and the RS485 communication module;
the control module is wirelessly connected with the background master station server through the 4G communication module, is connected with the electric energy meter of each floor through the RS485 communication module, and transmits the acquired data to the storage module;
the storage module is used for storing the data information acquired by the control module;
the 4G communication module is used for realizing wireless connection between the background master station server and the control module;
the RS485 communication module is used for realizing communication connection between the electric energy meter and the control module and carrying out data transmission;
the RS485 communication module comprises an RS485 communication circuit, the RS485 communication circuit comprises a first optocoupler, a second optocoupler, a first integrated circuit, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a triode, a first bidirectional voltage regulator tube and a thermistor, the model of the first integrated circuit is SN65HVD3082ED, the first end of the first optocoupler is externally connected with a 5V direct current voltage power supply through the third resistor, the second end of the first optocoupler is connected with the first end of the first integrated circuit, the third end of the first optocoupler is grounded, the fourth end of the first optocoupler is connected with the RXD end of the MCU of the control module through the first resistor, the fourth end of the first optocoupler is externally connected with the 5V direct current voltage power supply through the second resistor, the second end of the first integrated circuit is connected with the third end of the first integrated circuit, the third end of the first integrated circuit is grounded through the fourth resistor and is connected with the collector of the triode, the emitter of the triode is externally connected with a 5V direct-current voltage power supply, the base of the triode is connected with the fourth end of the first integrated circuit through a fifth resistor, the fourth end of the first integrated circuit is externally connected with the 5V direct-current voltage power supply through a sixth resistor, the fourth end of the first integrated circuit is connected with the fourth end of the second optocoupler, the third end of the second optocoupler is grounded, the first end of the second optocoupler is externally connected with the 5V direct-current voltage power supply, the second end of the second optocoupler is connected with the TXD end of the MCU of the control module through a seventh resistor, the fifth end of the first integrated circuit is grounded, the sixth end of the first integrated circuit is grounded through a ninth resistor, the seventh end of the first integrated circuit is grounded through an eighth resistor, the eighth end of the first integrated circuit is externally connected with the 5V direct-current voltage power supply, the first bidirectional voltage regulator tube is connected between the sixth end and the seventh end of the first integrated circuit in parallel, and the thermistor is connected with the.
A low cost and easy to operate Gateway for networking electric energy meters according to claim 1, wherein: the control module comprises the following steps:
the method comprises the following steps: powering up;
step two: password verification, wherein if no input or password error exists within 30 seconds, the operation state is automatically entered, and the next step is entered after password verification;
step three: parameter configuration, wherein the parameter configuration comprises an APN, a remote IP, a port number and an electric meter address;
step four: logging in a network;
step five: and after the TCP link is successfully established, if the information message from the network is not received within 5 minutes, the equipment automatically resets and initiates the TCP link again.
Preferably, the power supply module includes a power supply circuit, the power supply circuit includes a second integrated circuit, a second bidirectional regulator tube, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a tantalum capacitor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, an inductor and a diode, the model of the second integrated circuit is MP1584, a seventh end of the second integrated circuit is externally connected with a 12V dc voltage power supply, a seventh end of the second integrated circuit is grounded through the second bidirectional regulator tube, a seventh end of the second integrated circuit is grounded through the first capacitor, a second end of the second integrated circuit is connected with the seventh end of the second integrated circuit through the tenth resistor, a sixth end of the second integrated circuit is grounded through the eleventh resistor, a fifth end of the second integrated circuit is grounded, an eighth end of the second integrated circuit is connected with the first end of the second integrated circuit through the second capacitor, the third end of the second integrated circuit is grounded through a series circuit formed by a twelfth resistor and a third capacitor, the fourth end of the second integrated circuit is connected with a thirteenth resistor and a fourteenth resistor respectively, the first end of the second integrated circuit is grounded through a diode, the anode of the diode is grounded, the first end of the second integrated circuit is grounded through a series circuit formed by an inductor, the thirteenth resistor and the fourteenth resistor, and the tantalum capacitor and the fifth capacitor are connected with a series circuit formed by the thirteenth resistor and the fourteenth resistor in parallel.
Preferably, the number of the control modules connected with the electric energy meter through the RS485 communication module is at most 32.
Preferably, the model of the second integrated circuit is MP 1584.
Preferably, the MCU is STM32FRBT6
Compared with the prior art, the invention has the beneficial effects that:
1. the device collects data of the electric energy meter hung in a region of the device, and then the metering data of the electric energy meter is uploaded to a background master station system through a 4G communication module in the device, so that the collection of user electricity utilization information is completed;
2. in the RS485 communication circuit, the first optical coupler and the second optical coupler are used for communication isolation, so that the control module is electrically isolated from the electric energy meters on each floor, and the first bidirectional voltage regulator tube and the thermistor are used for realizing overvoltage protection and overheating protection of the circuit, so that the reliability of communication is improved.
Drawings
FIG. 1 is an electrical wiring diagram of the present invention;
FIG. 2 is a schematic diagram of the system of the present invention;
FIG. 3 is a system schematic of the control module of the present invention;
FIG. 4 is a schematic circuit diagram of an RS485 communication circuit of the present invention;
fig. 5 is a circuit schematic of the power circuit of the present invention.
In the figure: n1, a first optical coupler; n2, a second optical coupler; u1, a first integrated circuit; u2, second integrated circuit; TS1, a first bidirectional stabilivolt; TS2, second bidirectional stabilivolt; r1, a first resistor; r2, a second resistor; r3, third resistor; r4, fourth resistor; r5, fifth resistor; r6, sixth resistor; r7, seventh resistor; r8, eighth resistor; r9, ninth resistor; r10, tenth resistor; r11, eleventh resistor; r12, twelfth resistor; r13, thirteenth resistor; r14, fourteenth resistance; c1, a first capacitance; c2, a second capacitor; c3, a third capacitance; c4, a fourth capacitance; c5, a fifth capacitance; e1, tantalum capacitor; q1, triode; RT1, thermistor; l1, inductance; VD1, diode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution:
a Gateway which is low in cost and easy to operate and enables an electric energy meter to be connected to a network comprises a control module, a storage module, a power supply module, a 4G communication module and an RS485 communication module, wherein the storage module, the power supply module, the 4G communication module and the RS485 communication module are electrically connected with the control module;
the power supply module is used for supplying electric energy to the control module, the storage module, the 4G communication module and the RS485 communication module;
the control module is wirelessly connected with the background master station server through the 4G communication module, is connected with the electric energy meter of each floor through the RS485 communication module, and transmits the acquired data to the storage module;
the storage module is used for storing the data information acquired by the control module;
the 4G communication module is used for realizing wireless connection between the background master station server and the control module;
the RS485 communication module is used for realizing communication connection between the electric energy meter and the control module and carrying out data transmission;
the RS485 communication module comprises an RS485 communication circuit, the RS485 communication circuit comprises a first optical coupler N1, a second optical coupler N2, a first integrated circuit U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a triode Q1, a first bidirectional voltage regulator TS1 and a thermistor RT1, the model of the first integrated circuit U1 is SN65HVD3082 1, the first end of the first optical coupler N1 is externally connected with a 5V direct current voltage power supply through the third resistor R1, the second end of the first optical coupler N1 is connected with the first end of the first integrated circuit U1, the third end of the first optical coupler N1 is grounded, the third end of the first optical coupler N1 is connected with an RXD control module RXD through the first direct current resistor R1, the fourth end of the first optical coupler N1 is connected with a fourth end of the first optical coupler N1, and the fourth end of the first optical coupler N1 is connected with the fourth end of the first optical coupler N1, the third end of the first integrated circuit U1 is grounded through a fourth resistor R4 and connected to the collector of a transistor Q1, the emitter of the transistor Q1 is externally connected to a 5V dc power supply, the base of the transistor Q1 is connected to the fourth end of the first integrated circuit U1 through a fifth resistor R5, the fourth end of the first integrated circuit U1 is externally connected to a 5V dc power supply through a sixth resistor R6, the fourth end of the first integrated circuit U1 is connected to the fourth end of the second optocoupler N2, the third end of the second optocoupler N2 is grounded, the first end of the second optocoupler N2 is externally connected to a 5V dc power supply, the second end of the second optocoupler N2 is connected to the TXD of the MCU of the control module through a seventh resistor R7, the fifth end of the first integrated circuit U1 is grounded, the sixth end of the first integrated circuit U1 is grounded through a ninth resistor R9, the seventh end of the first dc power supply U1 is grounded through an eighth resistor R8 and the eighth integrated circuit U1 is externally connected to the eighth resistor R67675V 1, the first bidirectional regulator tube TS1 is connected in parallel between the sixth end and the seventh end of the first integrated circuit U1, and the thermistor RT1 is connected with the sixth end of the first integrated circuit U1.
In this RS485 communication circuit, carry out the communication by first opto-coupler N1 and second opto-coupler N2 and keep apart, realized carrying out electrical isolation between the electric energy meter of control module and every floor, by first bidirectional voltage regulator tube TS1 and thermistor RT1, can realize the overvoltage protection and the overheat protection of this circuit moreover, improved the reliability of communication.
Specifically, the control module comprises the following steps:
the method comprises the following steps: powering up;
step two: password verification, wherein if no input or password error exists within 30 seconds, the operation state is automatically entered, and the next step is entered after password verification;
step three: parameter configuration, wherein the parameter configuration comprises an APN, a remote IP, a port number and an electric meter address;
step four: logging in a network;
step five: and after the TCP link is successfully established, if the information message from the network is not received within 5 minutes, the equipment automatically resets and initiates the TCP link again.
Specifically, the power supply module includes a power supply circuit, the power supply circuit includes a second integrated circuit U2, a second bidirectional regulator TS2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a tantalum capacitor E1, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, an inductor L1 and a diode VD1, the model of the second integrated circuit U2 is MP1584, the seventh end of the second integrated circuit U2 is externally connected to a 12V dc voltage power supply, the seventh end of the second integrated circuit U2 is grounded through the second bidirectional regulator TS2, the seventh end of the second integrated circuit U2 is grounded through the first capacitor C2, the second end of the second integrated circuit U2 is connected to the sixth end of the second integrated circuit U2 through the tenth resistor R2, the eleventh end of the second integrated circuit U2 is grounded through the fifth resistor R2, an eighth end of the second integrated circuit U2 is connected to the first end of the second integrated circuit U2 through a second capacitor C2, a third end of the second integrated circuit U2 is grounded through a series circuit formed by a twelfth resistor R12 and a third capacitor C3, a fourth end of the second integrated circuit U2 is connected to a thirteenth resistor R13 and a fourteenth resistor R14, a first end of the second integrated circuit U2 is grounded through a diode VD1, an anode of the diode VD1 is grounded, a first end of the second integrated circuit U2 is grounded through a series circuit formed by an inductor L1, a thirteenth resistor R13 and a fourteenth resistor R14, and the tantalum capacitor E1 and the fifth capacitor C5 are both connected in parallel to a series circuit formed by a thirteenth resistor R13 and a fourteenth resistor R14.
The Gateway with the guide rail type installation can be conveniently installed beside the RS485 electric energy meter on each layer, and the routing of RS485 is reduced. Through RS485 communication, the Gateway collects the data of the electric energy meter hung in the region of the Gateway, and then the metering data of the electric energy meter is uploaded to a background master station system through a 4G module in the Gateway by using a public network, so that the collection of the user electricity utilization information is completed. 32 RS485 electric energy meters can be hung down under each Gateway, the hanging quantity can be increased or decreased according to the strength of RS485 signals when a user actually installs the electric energy meter, and the 4G module adopts an EC 254G module of Shanghai Shiliu company to support communication of 4G, 3G and 2G, GPRS.
After the product is electrified, the indicator lamp is normally turned off after about 4 seconds, the indicator lamp is turned on after about 2 seconds, the password input verification stage is started, and the running state is automatically started if no input or password error exists within 30 seconds. If the password passes the verification, the parameter configuration process is entered, the parameters comprise APN, remote IP, port number and electric meter address, and the reverse indicator lamp is set for the convenience of work. After the configuration is finished, the method enters APP Running, Gateway automatically logs in a network, and a TCP transparent transmission working state is entered. After the TCP transparent transmission link is successfully established between the equipment and the background master station server, the indicator lamp is normally on. During communication, the indicator light flickers.
After the equipment is normally powered on, if the initialized mobile network module fails, the module can be automatically reset. When the TCP link is successfully established by the equipment, if the information message from the network is not received within 5 minutes, the equipment automatically resets and initiates the TCP link again.
To sum up, the Gateway design of the electric energy meter network access is simple due to low cost and easy operation, and the design cost is reduced while the practicability is met.
Specifically, the number that control module passes through RS485 communication module and is connected with the electric energy meter is 32 at most.
Specifically, the model of the second integrated circuit U2 is MP 1584.
Specifically, the model of the MCU is STM32FRBT 6.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A low-cost and easy operation make electric energy meter Gateway of network entry which characterized in that: the intelligent control system comprises a control module, a storage module, a power module, a 4G communication module and an RS485 communication module, wherein the storage module, the power module, the 4G communication module and the RS485 communication module are electrically connected with the control module;
the power supply module is used for supplying electric energy to the control module, the storage module, the 4G communication module and the RS485 communication module;
the control module is wirelessly connected with the background master station server through the 4G communication module, is connected with the electric energy meter of each floor through the RS485 communication module, and transmits the acquired data to the storage module;
the storage module is used for storing the data information acquired by the control module;
the 4G communication module is used for realizing wireless connection between the background master station server and the control module;
the RS485 communication module is used for realizing communication connection between the electric energy meter and the control module and carrying out data transmission;
the RS485 communication module comprises an RS485 communication circuit, the RS485 communication circuit comprises a first optocoupler, a second optocoupler, a first integrated circuit, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a triode, a first bidirectional voltage regulator tube and a thermistor, the model of the first integrated circuit is SN65HVD3082ED, the first end of the first optocoupler is externally connected with a 5V direct current voltage power supply through the third resistor, the second end of the first optocoupler is connected with the first end of the first integrated circuit, the third end of the first optocoupler is grounded, the fourth end of the first optocoupler is connected with the RXD end of the MCU of the control module through the first resistor, the fourth end of the first optocoupler is externally connected with the 5V direct current voltage power supply through the second resistor, the second end of the first integrated circuit is connected with the third end of the first integrated circuit, the third end of the first integrated circuit is grounded through the fourth resistor and is connected with the collector of the triode, the emitter of the triode is externally connected with a 5V direct-current voltage power supply, the base of the triode is connected with the fourth end of the first integrated circuit through a fifth resistor, the fourth end of the first integrated circuit is externally connected with the 5V direct-current voltage power supply through a sixth resistor, the fourth end of the first integrated circuit is connected with the fourth end of the second optocoupler, the third end of the second optocoupler is grounded, the first end of the second optocoupler is externally connected with the 5V direct-current voltage power supply, the second end of the second optocoupler is connected with the TXD end of the MCU of the control module through a seventh resistor, the fifth end of the first integrated circuit is grounded, the sixth end of the first integrated circuit is grounded through a ninth resistor, the seventh end of the first integrated circuit is grounded through an eighth resistor, the eighth end of the first integrated circuit is externally connected with the 5V direct-current voltage power supply, the first bidirectional voltage regulator tube is connected between the sixth end and the seventh end of the first integrated circuit in parallel, and the thermistor is connected with the.
2. A low cost and easy to operate Gateway for networking electric energy meters according to claim 1, wherein: the control module comprises the following steps:
the method comprises the following steps: powering up;
step two: password verification, wherein if no input or password error exists within 30 seconds, the operation state is automatically entered, and the next step is entered after password verification;
step three: parameter configuration, wherein the parameter configuration comprises an APN, a remote IP, a port number and an electric meter address;
step four: logging in a network;
step five: and after the TCP link is successfully established, if the information message from the network is not received within 5 minutes, the equipment automatically resets and initiates the TCP link again.
3. A low cost and easy to operate Gateway for networking electric energy meters according to claim 1, wherein: the power supply module comprises a power supply circuit, the power supply circuit comprises a second integrated circuit, a second bidirectional voltage regulator tube, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a tantalum capacitor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, an inductor and a diode, the model of the second integrated circuit is MP1584, the seventh end of the second integrated circuit is externally connected with a 12V direct-current voltage power supply, the seventh end of the second integrated circuit is grounded through a second bidirectional voltage regulator tube, the seventh end of the second integrated circuit is grounded through the first capacitor, the second end of the second integrated circuit is connected with the seventh end of the second integrated circuit through the tenth resistor, the sixth end of the second integrated circuit is grounded through an eleventh resistor, the fifth end of the second integrated circuit is grounded, the eighth end of the second integrated circuit is connected with the first end of the second integrated circuit through the second capacitor, the third end of the second integrated circuit is grounded through a series circuit formed by a twelfth resistor and a third capacitor, the fourth end of the second integrated circuit is connected with a thirteenth resistor and a fourteenth resistor respectively, the first end of the second integrated circuit is grounded through a diode, the anode of the diode is grounded, the first end of the second integrated circuit is grounded through a series circuit formed by an inductor, the thirteenth resistor and the fourteenth resistor, and the tantalum capacitor and the fifth capacitor are connected with a series circuit formed by the thirteenth resistor and the fourteenth resistor in parallel.
4. A low cost and easy to operate Gateway for networking electric energy meters according to claim 1, wherein: the number that control module passes through RS485 communication module and is connected with the electric energy meter is 32 at most.
5. A low cost and easy to operate Gateway for networking electric energy meters according to claim 3, wherein: the model of the second integrated circuit is MP 1584.
6. A low cost and easy to operate Gateway for networking electric energy meters according to claim 1, wherein: the model of the MCU is STM32FRBT 6.
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| CN202011141995.5A CN112399415A (en) | 2020-10-22 | 2020-10-22 | Gateway enabling electric energy meter to be connected to network with low cost and easy operation |
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| CN204614195U (en) * | 2015-05-29 | 2015-09-02 | 深圳市拓远能源科技有限公司 | The intelligent wireless instrument of a kind of band 485 communication functions |
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| CN206743121U (en) * | 2017-04-11 | 2017-12-12 | 陈育新 | A kind of program control high-low pressure integrated power supply module suitable for low pressure wide temperature range |
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