CN208954322U - Novel wireless communication acquisition module - Google Patents

Abstract

The utility model discloses a kind of novel wireless communication acquisition modules, including power module, controller module, RS485 communication module, remote wireless communication module and Anneta module；Power module power supply；RS485 communication module is communicated with electric energy meter and interaction data；Data are uploaded remote wireless communication module by controller module, or by data forwarding RS485 communication module；Data are uploaded to main website by remote wireless communication module, or receive main website instruction.The utility model can will carry out fast and reliable connection between intelligent electric energy meter and main website, and optimize system structure, and low in cost, high reliablity.

Description

Novel wireless communication acquisition module

Technical field

The utility model is specifically related to a kind of novel wireless communication acquisition module.

Background technique

With the development of economic technology and the raising of people's production level, electric energy has become in people's production and life Essential secondary energy sources bring endless convenience to people's production and life.Simultaneously with smart grid development, The automation of electric system and intelligentized degree are also higher and higher.

The uplink communication of intelligent electric energy meter is one of critical function of intelligent electric energy meter, its purpose is that by intelligent electric energy meter Data (including continuous data and operational data etc.) upload main website.Currently, there are mainly two types of communications for intelligent electric energy meter uplink communication Mode, one kind are wireless public network communication mode, another is power line carrier communication mode, and two kinds of communication modes are all to use External moduleization design, is connect by socket and contact pin with intelligent electric energy meter.By way of power line carrier, PLC, acquisition Data need just upload to main website by concentrator；The data acquired by wireless public network communication mode can be uploaded directly into master It stands.Collector is referred to as using the device that power line carrier communication mode acquires electric energy meter data.Using wireless public network communication party The external module of formula is referred to as wireless communication collection module.

Currently, electricity meter-reading there are mainly two types of topology: 1, electric energy meter → collector → concentrator → main website, 2, electric energy meter → Wireless communication collection module → main website.The suitable ammeter of the first topology is larger, the fields such as centralized management, such as high-rise building It closes；Second of topology is then suitble to the data of single table to upload.

There is muti-piece electric energy meter for single ammeter box, and is hired out with the de-centralized management of other ammeter boxes, such as single low layer The occasion of room meter reading, it is not only complicated using the first topological mode, but also resource redundancy；Using second of topology, due to every block of electric energy Table is required with a wireless communication collection module, and the cost of wireless communication collection module is higher, so as to cause integral into This is higher.All there is certain wasting of resources, high expensive in both the above mode.

Utility model content

The purpose of this utility model is to provide a kind of low in cost, high reliablity and the simple novel wireless communications of deployment Acquisition module.

This novel wireless communication acquisition module provided by the utility model, including power module, controller module, RS485 communication module, remote wireless communication module and Anneta module；RS485 communication module and remote wireless communication module with Controller module connection；Anneta module is connect with remote wireless communication module；Power module is used for the novel wireless communication Acquisition module power supply；RS485 communication module is used to carry out RS485 bus communication with external several electric energy meters and carries out data friendship Mutually；Controller module is used to the data that RS485 communication module obtains being uploaded to remote wireless communication module, or by long-range nothing The data forwarding that line communication module issues gives RS485 communication module；Remote wireless communication module is used to data passing through channel radio The mode of letter is uploaded to main website, or receives the instruction that main website issues in a manner of wirelessly communicating.

The power module includes AC220V/DC5V conversion circuit, 5V/4V conversion circuit, power-fail detection circuit and standby Use power circuit；AC220V/DC5V conversion circuit and 5V/4V conversion circuit concatenation；AC220V/DC5V conversion circuit, power down inspection Slowdown monitoring circuit and stand-by power supply circuit concatenation；The 220V AC energy that AC220V/DC5V conversion circuit is used to provide outside is converted For 5V direct current energy；5V/4V conversion circuit is used to being converted to 5V direct current energy into 4V direct current energy and lead to for the novel radio Believe acquisition module power supply；Power-fail detection circuit is used to detect the power supply state of the 220V AC energy of external offer, and in outside Exporting when power supply power down judges signal to stand-by power supply circuit；Stand-by power supply circuit is used in the power-off of external 220V AC energy Auxiliary power supply electric energy is provided.

The AC220V/DC5V conversion circuit is the conversion circuit being made of the power supply chip of model 8236T.

The 5V/4V conversion circuit is the circuit being made of the voltage regulator chip of model TPS7A7001.

The power-fail detection circuit is the circuit being made of the power management chip of model R3111H421.

The stand-by power supply circuit is the circuit being made of the power supply chip of model TPS61021A and super capacitor.

The remote wireless communication module is the wireless communication module being made of the 4G communications module of model N720.

The RS485 communication module is the circuit being made of 485 communication chips of model AZRS485.

The controller module includes controller chip, clock circuit, indicator light circuit and watchdog circuit；Clock electricity Road, indicator light circuit and watchdog circuit are connect with controller chip；Clock circuit is used to provide clock to controller chip Signal；Indicator light circuit is used to indicate the working condition of controller module；Watchdog circuit is used to work in controller chip different Reset signal is issued when often to reset controller chip.

The clock circuit is the circuit being made of the clock chip of model 8025T.

The watchdog circuit is the circuit being made of the counter chip of model SN74HC4060DR.

This novel wireless communication acquisition module provided by the utility model, with copy reading muti-piece electric energy meter data simultaneously Function, and main website is transmitted between data；Electric energy meter is directly directly handed over 4G wireless communication collection module by RS485 communication Mutually, table data are uploaded to main website by 4G wireless communication collection module, or main website instruction is issued to each electric energy meter；Therefore originally Utility model can will carry out fast and reliable connection between intelligent electric energy meter and main website, and optimize system structure, and It is low in cost, high reliablity.

Detailed description of the invention

Fig. 1 is the functional block diagram of the module of the utility model.

Fig. 2 is the circuit theory schematic diagram of the AC220V/DC5V conversion circuit of the utility model.

Fig. 3 is the circuit theory schematic diagram of the 5V/4V conversion circuit of the utility model.

Fig. 4 is the circuit theory schematic diagram of the power-fail detection circuit of the utility model.

Fig. 5 is the circuit theory schematic diagram of the stand-by power supply circuit of the utility model.

Fig. 6 is the circuit theory schematic diagram of the RS485 communication module of the utility model.

Fig. 7 is the circuit theory schematic diagram of the clock circuit of the utility model.

Fig. 8 is the circuit theory schematic diagram of the watchdog circuit of the utility model.

Specific embodiment

It is as shown in Figure 1 the functional block diagram of the module of the utility model: this novel radio provided by the utility model Communicate acquisition module, including power module, controller module, RS485 communication module, remote wireless communication module and antenna mould Block；RS485 communication module and remote wireless communication module are connect with controller module；Anneta module and remote radio communication mould Block connection；Power module is used to power to the novel wireless communication acquisition module；If RS485 communication module is used for and outside Dry electric energy meter carries out RS485 bus communication and carries out data interaction；Controller module is used for the number for obtaining RS485 communication module According to being uploaded to remote wireless communication module, or the data forwarding that remote wireless communication module is issued gives RS485 communication module； Remote wireless communication module is used to for data being uploaded to main website through wireless communication, or receives main website to wirelessly communicate The instruction that issues of mode.

In the specific implementation, power module includes AC220V/DC5V conversion circuit, 5V/4V conversion circuit, detection of power loss electricity Road and stand-by power supply circuit；AC220V/DC5V conversion circuit and 5V/4V conversion circuit concatenation；AC220V/DC5V conversion circuit, Power-fail detection circuit and stand-by power supply circuit concatenation；AC220V/DC5V conversion circuit is used for the 220V alternating current for providing outside 5V direct current energy can be converted to；5V/4V conversion circuit is used to be converted to 5V direct current energy 4V direct current energy and is described novel Wireless communication collection module power supply；Power-fail detection circuit is used to detect the power supply state of the 220V AC energy of external offer, and Exporting in external power supply power down judges signal to stand-by power supply circuit；Stand-by power supply circuit is used in external 220V AC energy Auxiliary power supply electric energy is provided when power-off.Controller module includes controller chip, clock circuit, indicator light circuit and house dog electricity Road；Clock circuit, indicator light circuit and watchdog circuit are connect with controller chip；Clock circuit is used for controller chip Clock signal is provided；Indicator light circuit is used to indicate the working condition of controller module；Watchdog circuit is used in controller core Reset signal is issued when piece operation irregularity to reset controller chip.

It is illustrated in figure 2 the circuit theory schematic diagram of the AC220V/DC5V conversion circuit of the utility model: AC220V/ DC5V conversion circuit is the conversion circuit being made of the power supply chip (U1) of model 8236T；External 220V AC energy is logical Cross J1 and J2 interface access circuit, then by protective resistance RV1 carry out overvoltage protection after, then by insurance RT1 protected, Then after being filtered by X capacitor CX1 and inductance L1, direct current energy is rectified by rectifier bridge D1, then passes through capacitor again C2, C3 and C20 are filtered, and then access 5 feet of the first primary coil of transformer T1；3 feet of the first primary coil simultaneously 7 feet and 8 feet of power supply chip U1 are then directly connected to, while also passing through capacitor C4 ground connection filtering；1 foot of chip passes through pull down resistor R5 and R6 ground connection；2 feet of chip are directly grounded, and 3 feet of chip are grounded by filter capacitor C5, simultaneously also by sampling resistor R3 2 feet of the second primary coil of transformer are connected, while closed loop of 4 feet as output voltage feedback pin for output voltage is anti- Feedback；5 feet of chip are hanging；7 feet of chip and 8 feet are shorted, and are directly connected to the first of transformer as pwm signal output pin 3 feet of primary coil；U1 chip controls the turn-on and turn-off of the first primary coil of transformer by the pwm signal of 7 feet and 8 feet, To transfer electrical energy into the secondary side of transformer；9 feet of the secondary coil of transformer are the positive pole of output, and 10 feet are output Common end (ground terminal)；9 feet of secondary coil carry out unidirectional protection by diode D4, are then filtered by capacitor C7 and C8 Wave, then filtered by inductance L2, after being then filtered again by a series of capacitors (C9~C12), export final 5V signal (V5P0)；Meanwhile after capacitor C7 and C8 filtering, signal is sampled；Sample circuit include resistance R8~R13 and Capacitor C14 and C15；Sampled signal also passes through optocoupler U2 and is isolated simultaneously；The road sampled signal is used for the anti-of output voltage Feedback samples, and the sampled signal is input to 4 feet of power supply chip U1.

Be illustrated in figure 3 the circuit theory schematic diagram of the 5V/4V conversion circuit of the utility model: 5V/4V conversion circuit is The circuit being made of the voltage regulator chip of model TPS7A7001；1 foot of chip is hanging, and 2 feet are enabled pin, connection control Signal V4P0-CTRL signal processed, the signal be watchdog reset signal, in controller operation irregularity by the electricity of controller Source signal resets to restart controller；3 feet of chip are power input pin, and connect 5V power supply signal, while the pin It is grounded and filters also by capacitor C343；4 feet and 5 feet of chip are directly hanging；8 feet and 9 feet of chip are directly grounded；Chip 6 feet are output pin, export 4V power supply signal, after carrying out unidirectional protection by diode V86, then pass through a series of capacitors After (C342, C345, C344 and C346) is filtered, 4V power supply signal V4P0 is exported；Meanwhile the power supply signal of output is also logical It crosses Zener diode V60 and carries out voltage clamp, after carrying out output voltage sampling simultaneously also by resistance R432 and R431, feedback is arrived 7 feet of voltage regulator chip, to export stable voltage signal by the way of closed-loop control.

Be illustrated in figure 4 the circuit theory schematic diagram of the power-fail detection circuit of the utility model: power-fail detection circuit is served as reasons The circuit that the power management chip of model R3111H421 is constituted；2 feet of chip are input pin, are connected by diode V14 Power supply signal V1P8 is met, simultaneously also by diode V13 connection power supply signal V5P0, is also connect by filter circuit (R51 and C32) Ground filtering；3 feet of chip are directly grounded；1 foot of chip is then signal output pin, directly output detection of power loss signal ALARM-PD is grounded also by capacitor C33 and filters simultaneously also by pull-up resistor R50 connection power supply signal V1P8；When 5V power supply When signal (V5P0) drops to 4.2V, H421 chip exports low level alarm, this alarm will trigger the standby electric circuit of super capacitor, opens Open backup power source.

Be illustrated in figure 5 the circuit theory schematic diagram of the stand-by power supply circuit of the utility model: stand-by power supply circuit is served as reasons The circuit that the power supply chip and super capacitor of model TPS61021A is constituted；V5P0 as 5V power circuit, by resistance R56, After R57, R429 and R54 current limliting, then passes through triode V20 and charge to super capacitor C36；Meanwhile Zener diode U4 is for limiting The charging voltage of super capacitor processed；Due to the Zener voltage that the base voltage of triode V20 is U4, triode V20 is always Conducting, and the charging voltage of super capacitor C36 is clamped down on always Zener voltage for U4；Meanwhile the output end of super capacitor It is directly connected to 8 feet (power input pin) of power supply chip TPS61021A；1 foot of power supply chip U3 is directly grounded, and 5 feet are to make Energy end is simultaneously pulled to high level (output end of connection super capacitor) by resistance R58；6 feet and 7 feet of chip then pass through inductance L1 connection high level signal；9 feet of chip are directly grounded；3 feet and 4 feet of chip are then used as output pin to export stable 4V letter Number；Also output signal also passes through resistance sampling circuit R52, R53 and R59 and carries out output voltage sampling simultaneously, and by sampled signal 2 feet (feedback end) of chip are fed back to, while capacitor C34 and C35 are filtered；The output end connection switch pipe of power supply chip The movable end (2 foot) of V19 (using metal-oxide-semiconductor), 3 feet of switching tube are then final 4V output signal end；1 foot of switching tube is then Control terminal；The ground level of detection of power loss signal ALARM-PD connecting triode V22, the emitter of triode V22 pass through pull-up resistor The output end of R63 connection power supply chip, collector then pass through resistance R63 ground connection while the also ground level of connecting triode V21, V21 Emitter ground connection, the control terminal of collector connection switch pipe V19 connects high level simultaneously also by pull down resistor R60；Work as power down When to detect signal ALARM-PD be high level, V22 conducting, the ground level ground connection of V21, V21 are disconnected at this time, at this time switching tube V19 Control terminal is pulled to high level by resistance R60, and switching tube V19 ends at this time；When ALARM-PD signal is low level, V22 is disconnected, and the ground level of V21 is drawn high by resistance R63 to high level, and V21 is connected at this time, and the control terminal of switching tube V19 is shorted to Low level；Switching tube V19 is connected at this time, the 4V signal supplying power for outside of power supply chip output.

Be illustrated in figure 6 the circuit theory schematic diagram of the RS485 communication module of the utility model: RS485 communication module is The circuit being made of 485 communication chips of model AZRS485；1 foot of communication chip is RXD pin, passes through pull-up resistor R421 connection positive pole V5P0 is connected simultaneously also by switching tube circuit all the way (resistance R41 and R42, switching tube V7) and is controlled The RXD1 signal of device module；2 feet and 3 feet of chip then directly pass through pull-up resistor R43 connection V5P0 signal and are raised supreme Level；Also motion end one end of connection switch pipe V10, the motion end other end of V10 are directly connected to controller module output simultaneously Control signal RE/DE, the control terminal of Simultaneous Switching pipe connects V1P8 signal；4 feet of communication chip are TXD pin, are passed through Pull-up resistor R47 connection positive pole is simultaneously pulled to high level, while also motion end one end of connection switch pipe V12, V12's The motion end other end connects the TXD1 pin of controller module, and the control terminal of Simultaneous Switching pipe V12 then connects power supply signal V1P8； 8 feet of communication chip are directly connected to positive pole and take electricity, and 5 feet are directly grounded；6 feet and 7 feet of chip are then final RS485 Communications pins simultaneously export 485A and 485B signal, while 485B signal is grounded by pull down resistor R44, also by diode V8 into Row overvoltage protection, 485A pin then pass through pull-up resistor R46 connection positive pole, carry out overvoltage protection simultaneously also by V11, together When 485A and 485B communications pins between also protected by protection diode V9, while 485A is also connected with insurance and carried out Stream protection.

Be illustrated in figure 7 the circuit theory schematic diagram of the clock circuit of the utility model: clock circuit is by model The circuit that the clock chip of 8025T is constituted；Clock circuit is used to provide synchronous clock source to controller module, when using 8025T Clock chip is realized；6 feet of RX-8025T chip are directly connected to power supply signal, while 11 feet are directly grounded, 12 feet of chip and 13 Foot is the clock signal of output, and after carrying out level conversion by electrical level transferring chip LSR0204, then is input to controller module With the Clock Signal pin of remote communication module.

Be illustrated in figure 8 the circuit theory schematic diagram of the watchdog circuit of the utility model: watchdog circuit is mainly used for After crash or other exceptions occur for microcontroller, the power down of the 4V power supply of controller chip and telecommunication chip is automatically controlled With power on, power on reset operation is carried out to it by hardware mode.Watchdog circuit core component is made of a counter, The SN74HC4060DR of counter model TI company, when normal work, microcontroller is constantly that watchdog circuit feeds dog (output WDT signal), it constantly counts and resets to 74HC4060, when crash or other exceptions occur for microcontroller without giving house dog electricity When dog is fed on road, 74HC4060 counter can overflow meter completely, reach N720 4V power-supply system power down in this way and power on, Achieve the purpose that N720 electrification reset is allowed to restore to work normally.

Claims (9)

1. a kind of novel wireless communication acquisition module, it is characterised in that communicate mould including power module, controller module, RS485 Block, remote wireless communication module and Anneta module；RS485 communication module and remote wireless communication module connect with controller module It connects；Anneta module is connect with remote wireless communication module；Power module is used to power to the novel wireless communication acquisition module； RS485 communication module is used to carry out RS485 bus communication with external several electric energy meters and carries out data interaction；Controller module Data for obtaining RS485 communication module are uploaded to remote wireless communication module, or will be under remote wireless communication module The data forwarding of hair gives RS485 communication module；Remote wireless communication module for uploading data through wireless communication To main website, or receive the instruction that main website issues in a manner of wirelessly communicating.

2. novel wireless communication acquisition module according to claim 1, it is characterised in that the power module includes AC220V/DC5V conversion circuit, 5V/4V conversion circuit, power-fail detection circuit and stand-by power supply circuit；AC220V/DC5V conversion Circuit and 5V/4V conversion circuit concatenation；AC220V/DC5V conversion circuit, power-fail detection circuit and stand-by power supply circuit concatenation； AC220V/DC5V conversion circuit is used to the 220V AC energy that outside provides being converted to 5V direct current energy；5V/4V conversion circuit For 5V direct current energy to be converted to 4V direct current energy and is powered for the novel wireless communication acquisition module；Power-fail detection circuit For detecting the power supply state of the 220V AC energy of external offer, and is exported in external power supply power down and judge signal to spare Power circuit；Stand-by power supply circuit is used to provide auxiliary power supply electric energy in the power-off of external 220V AC energy.

3. novel wireless communication acquisition module according to claim 2, it is characterised in that the AC220V/DC5V conversion Circuit is the conversion circuit being made of the power supply chip of model 8236T.

4. novel wireless communication acquisition module according to claim 2, it is characterised in that the 5V/4V conversion circuit is The circuit being made of the voltage regulator chip of model TPS7A7001.

5. novel wireless communication acquisition module according to claim 2, it is characterised in that the power-fail detection circuit is The circuit being made of the power management chip of model R3111H421.

6. novel wireless communication acquisition module according to claim 2, it is characterised in that the stand-by power supply circuit is The circuit being made of the power supply chip of model TPS61021A and super capacitor.

7. novel wireless communication acquisition module described according to claim 1~one of 6, it is characterised in that the long distance wireless Communication module is the wireless communication module being made of the 4G communications module of model N720.

8. novel wireless communication acquisition module described according to claim 1~one of 6, it is characterised in that the RS485 is logical Believe that module is the circuit being made of 485 communication chips of model AZRS485.

9. novel wireless communication acquisition module described according to claim 1~one of 6, it is characterised in that the controller mould Block includes controller chip, clock circuit, indicator light circuit and watchdog circuit；Clock circuit, indicator light circuit and house dog Circuit is connect with controller chip；Clock circuit is used to provide clock signal to controller chip；Indicator light circuit is for referring to Show the working condition of controller module；Watchdog circuit is used to issue reset signal in controller chip operation irregularity to control Device chip is resetted.