CN208026858U - A kind of electric energy meter power consumption test module - Google Patents
A kind of electric energy meter power consumption test module Download PDFInfo
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- CN208026858U CN208026858U CN201820490785.9U CN201820490785U CN208026858U CN 208026858 U CN208026858 U CN 208026858U CN 201820490785 U CN201820490785 U CN 201820490785U CN 208026858 U CN208026858 U CN 208026858U
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Abstract
The utility model discloses a kind of electric energy meter power consumption test modules, including shell, electronic circuit cell, power supply terminal and signal terminal, electronic circuit cell includes measuring unit, button, MCU microprocessors, LCD display, communication unit and alarm output unit, power supply terminal is connected with power supply, power supply terminal is connect with measuring unit, measuring unit is connect with MCU microprocessors, MCU microprocessors respectively with button, LCD display, communication unit is connected with alarm output unit, the communication unit and alarm output unit are connect with signal terminal, signal terminal realizes information exchange for connecting external equipment, power supply terminal is for connecting tested electric energy meter.The utility model uses modularized design, and small, fast wiring, easy to operate easy-to-use, test step is few, reduces manually, can effectively reduce production cost, and it is high to measure accuracy rate.
Description
Technical field
The utility model is related to electric energy meter power consumption test technical fields, and in particular to a kind of electric energy meter power consumption test module.
Background technology
The consumed power of whole machine of electric energy meter is not only a customs inspection technology and requires index or the property of an electric energy meter
It can quality judging index；All there are problems in the detection method used in industry at present, if using easy detection device,
Can then there are the problems such as complicated for operation, accuracy of measurement is low, to measure process more, measurement working hour is high, but high-end detection device
There is the problems such as with high costs, volume is larger again, is intended merely to detect single electric energy meter power consumption project and uses high-end detection
Equipment is obviously less reasonable.
Invention content
Technical problem to be solved in the utility model is to provide a kind of electric energy in view of the above shortcomings of the prior art to boast of one's bit of contribution
Test module is consumed, this electric energy meter power consumption test module uses modularized design, small, easy to operate easy-to-use, fast wiring to survey
Trial work sequence is few, and test working hour is few, reduces cost of labor, can effectively reduce production cost, and it is high to measure accuracy rate.
To realize the above-mentioned technical purpose, the technical solution that the utility model is taken is：
A kind of electric energy meter power consumption test module, including shell, electronic circuit cell, power supply terminal and signal terminal
Son, the electronic circuit cell include measuring unit, button, MCU microprocessors, LCD display, communication unit and warning output
Unit, the power supply terminal, signal terminal, button and LCD display are respectively mounted on the housing, the measurement
Unit, MCU microprocessors, communication unit and alarm output unit are installed in the inside of the shell, the supply terminals
Son is connected with power supply, and power supply terminal is connect with measuring unit, and the measuring unit is connect with MCU microprocessors, the MCU
Microprocessor is connect with button, LCD display, communication unit and alarm output unit respectively, and the communication unit and alarm are defeated
Go out unit to connect with signal terminal, signal terminal realizes information exchange for connecting external equipment, described
Power supply terminal is for connecting tested electric energy meter.
As the further improved technical solution of the utility model, the measuring unit includes resistance R5 to resistance R17, electricity
Hold C2 to capacitance C10, crystal oscillator X1 and integrated circuit RN8209C, one end of the resistance R8, one end of resistance R7 and resistance R6
One end is all connected with power supply terminal, and one end of the other end of the resistance R8, one end of resistance R9 and resistance R10 is all connected with electricity
Source connecting terminal, the other end of the resistance R7 and the other end of resistance R9 are all connected with ground wire, and the other end of the resistance R10 is equal
The pin 6 of one end and integrated circuit RN8209C of capacitance C8 is connected, the other end of the capacitance C8 and one end of capacitance C5 connect
Ground wire, the other end of the capacitance C5 are connect with the pin 5 of the other end of resistance R6 and integrated circuit RN8209C respectively, institute
The pin 1 for stating integrated circuit RN8209C is connect with one end of one end of capacitance C4 and crystal oscillator X1 respectively, and the capacitance C4's is another
End, crystal oscillator X1 one end ground wire is connected with one end of capacitance C2, the other end of the capacitance C2 is connected with the other end of crystal oscillator X1
The pin 4 of the pin 16 of integrated circuit RN8209C, the integrated circuit RN8209C is connect with one end of resistance R5, described integrated
The pin 15 of circuit RN8209C is separately connected the other end and power supply of resistance R5, and the pin 14 of the integrated circuit RN8209C divides
Not Lian Jie capacitance C3 one end and ground wire, the other end of the capacitance C3 connect power supply, the pin of the integrated circuit RN8209C
13 and pin 12 connect MCU microprocessors, the pin 11 of the integrated circuit RN8209C is separately connected one end and the electricity of capacitance C6
Hold one end of C7, the other end of the capacitance C6 and the other end of capacitance C7 are all connected with ground wire, the integrated circuit RN8209C's
Pin 10 is all connected with one end of one end and resistance R12 of capacitance C10, and the pin 9 of the integrated circuit RN8209C is all connected with resistance
One end of R11, one end of capacitance C9 are connected with one end of resistance R17, the other end of the capacitance C10, resistance R12 it is another
The other end at end, the other end of resistance R11 and capacitance C9 is all connected with ground wire, the other end of the resistance R17 and the one of resistance R16
End connection, the other end of the resistance R16 are connect with one end of resistance R15, and the other end of the resistance R15 is with resistance R14's
One end connects, and the other end of the resistance R14 is connect with one end of resistance R13, and the other end connection power supply of the resistance R13 connects
Line terminals.
As the further improved technical solution of the utility model, the MCU microprocessors include microprocessor U3, described
Microprocessor U3 uses the pin 25 and pin 26 of microprocessor R7F0C002, the microprocessor R7F0C002 single with measurement
Member connection, pin 33 to the pin 48 of the microprocessor R7F0C002 are connect with LCD display, the microprocessor
The pin 50 of R7F0C002 is with by key connection, and the pin 58 of the microprocessor R7F0C002 is connect with alarm output unit, institute
The pin 60 and pin 61 for stating microprocessor R7F0C002 are connect with communication unit, the pin of the microprocessor R7F0C002
5 are connected with power supply by resistance R18, and the pin 6 of the microprocessor R7F0C002 is connected with power supply and micro- place by resistance R19
The pin 6 of reason device R7F0C002 is connected with ground wire by capacitance C11, and the pin 12 of the microprocessor R7F0C002 passes through capacitance
C12 is connected with ground wire, and the pin 16 of the microprocessor R7F0C002 is connected with ground wire, the microprocessor by capacitance C13
The pin 19 of R7F0C002 is connected with the pin of one end of capacitance C14 and the other end and microprocessor R7F0C002 of capacitance C14
20 connections, the pin 21 of the microprocessor R7F0C002 are connected with ground wire, the microprocessor R7F0C002 by capacitance C15
Pin 22 ground wire is connected with by capacitance C16, the pin 23 of the microprocessor R7F0C002 is connected with ground by capacitance C17
Line.
As the further improved technical solution of the utility model, the communication unit includes communication chip U1, triode
Q1, resistance R1, resistance R2, resistance R3, resistance R4, capacitance C1 and bilateral diode D1, the communication chip U1 are using communication core
The pin 1 and pin 4 of piece MAX13085, the communication chip MAX13085 are connect with MCU microprocessors, the communication chip
The pin 2 and pin 3 of MAX13085 is connect with one end of resistance R4, the collector of one end and triode Q1 of the resistance R4
The other end of connection, the resistance R4 connects ground wire, and the emitter of the triode Q1 is connected with power supply, the triode Q1's
Base stage is connect with one end of resistance R1, and the other end of the resistance R1 is connect with the pin 4 of communication chip MAX13085, described logical
Believe that the pin 5 of chip MAX13085 connects ground wire, the pin 6 of the communication chip MAX13085 respectively with one end of resistance R3,
One end of bilateral diode D1 is connected with signal terminal, and the other end of the resistance R3 is connected with power supply, the communication core
The pin 7 of piece MAX13085 is connect with one end of resistance R2, one end of bilateral diode D1 and signal terminal respectively, described
The other end of resistance R2 connects ground wire, and the pin 8 of the communication chip MAX13085 connects with one end of power supply and capacitance C1 respectively
It connects, the other end of the capacitance C1 connects ground wire.
As the further improved technical solution of the utility model, the alarm output unit includes relay K1, resistance
The base stage of R20, triode Q2 and diode D2, the triode Q2 are connect by resistance R20 with MCU microprocessors, triode
The emitter of Q2 connects ground wire, the collector of the triode Q2 respectively with one end of relay K1 driving coils and diode D2
Anode connection, the other end of the relay K1 driving coils and the cathode of diode D2 are connected with power supply, the relay
K1 is connect with signal terminal.
As the further improved technical solution of the utility model, the LCD display is mounted on the upper table of the shell
Face, the button are mounted on the lower surface of shell, and the leading flank and lower surface link position of the shell are equipped with termination recess, institute
It states power supply terminal and signal terminal is installed in termination recess.
The beneficial effects of the utility model are：
The utility model uses modularized design, signal terminal and power supply terminal to use plug-in type terminals
Son, wiring is simpler, convenient, reduces work hours；There is communication unit RS485 communication interfaces, communications protocol DLT645- may be used
2007 communication protocols can reduce development cost with electric energy meter production dependence test software, the protocol interconnection of equipment；It is at low cost, it can
To be individually used for the production test of electric energy meter power consumption；Overall volume is small, can be embedded in a variety of detection jigs, equipment carries out functional group
It closes, merges single test step, reduce human cost；High certainty of measurement, measuring circuit use the special metering IC
RN8209C, can adjustment measurement accuracy；Function is more, has programmable measurement, liquid crystal display, digital communication and alarm signal output
Etc. functions.
Description of the drawings
Fig. 1 is the inside integrated circuit principle schematic of the utility model.
Fig. 2 is the structural schematic diagram of the upper surface of the shell of the utility model.
Fig. 3 is the structural schematic diagram of the lower surface of the shell of the utility model.
Fig. 4 is the measuring unit circuit theory schematic diagram of the utility model.
Fig. 5 is the MCU microprocessor circuit principle schematics of the utility model.
Fig. 6 is the communication unit circuit theory schematic diagram of the utility model.
Fig. 7 is the alarm output unit circuit theory schematic diagram of the utility model.
Specific implementation mode
Specific embodiment of the present utility model is further illustrated below according to Fig. 1 to Fig. 7：
Referring to Fig. 1, a kind of electric energy meter power consumption test module, including shell 1, electronic circuit cell 2, power supply terminal 3
With signal terminal 4, the electronic circuit cell 2 is shown including measuring unit 201, button 202, MCU microprocessors 204, LCD
Show device 203, communication unit 205 and alarm output unit 206, the power supply terminal 3, signal terminal 4, button 202
It is installed on the shell 1 with LCD display 203, the measuring unit 201, MCU microprocessors 204, communication unit 205
The inside of the shell 1 is installed in alarm output unit 206, the power supply terminal 3 is connected with power supply 5, and power supply connects
Line terminals 3 are connect with measuring unit 201, and the measuring unit 201 is connect with MCU microprocessors 204, the MCU microprocessors
204 connect with button 202, LCD display 203, communication unit 205 and alarm output unit 206 respectively, the communication unit
205 and alarm output unit 206 4 connect with signal terminal, signal terminal 4 is real for connecting external equipment
Existing information exchange, the power supply terminal 3 is for connecting tested electric energy meter 6.Tested electric energy meter 6 passes through power supply terminal 3
It is connect with electric energy meter power consumption test block coupled in series, power supply 5 is tested electric energy meter 6 and electric energy meter power consumption by power supply terminal 3
Test module provides power supply 5.
In the present embodiment, referring to Fig. 2 and Fig. 3, the LCD display 203 is mounted on the upper surface of the shell 1, described
Button 202 is mounted on the lower surface of shell 1, and the leading flank and lower surface link position of the shell 1 are equipped with termination recess 7, institute
It states power supply terminal 3 and signal terminal 4 is installed in termination recess 7.
In the present embodiment, referring to Fig. 4, the measuring unit 201 includes resistance R5 to resistance R17, capacitance C2 to capacitance
C10, crystal oscillator X1 and integrated circuit RN8209C, one end of one end of the resistance R8, one end of resistance R7 and resistance R6 are all connected with
One end of power supply terminal 3, the other end of the resistance R8, one end of resistance R9 and resistance R10 is all connected with supply terminals
Son 3, the other end of the resistance R7 and the other end of resistance R9 are all connected with ground wire, and the other end of the resistance R10 is all connected with electricity
Hold the pin 6 of one end and integrated circuit RN8209C of C8, the other end of the capacitance C8 and one end of capacitance C5 are all connected with ground
The other end of line, the capacitance C5 is connect with the pin 5 of the other end of resistance R6 and integrated circuit RN8209C respectively, the collection
It is connect respectively with one end of one end of capacitance C4 and crystal oscillator X1 at the pin 1 of circuit RN8209C, the other end of the capacitance C4,
One end of crystal oscillator X1 connects ground wire with one end of capacitance C2, and the other end of the capacitance C2 is connected with the other end of crystal oscillator X1 to be integrated
The pin 4 of the pin 16 of circuit RN8209C, the integrated circuit RN8209C is connect with one end of resistance R5, the integrated circuit
The pin 15 of RN8209C is separately connected the other end and power supply 5 of resistance R5, and the pin 14 of the integrated circuit RN8209C is distinguished
One end and the ground wire of capacitance C3 are connected, the other end of the capacitance C3 connects power supply 5, the pin of the integrated circuit RN8209C
The 13 and connection MCU of pin 12 microprocessors 204, the pin 11 of the integrated circuit RN8209C is separately connected one end of capacitance C6
With one end of capacitance C7, the other end of the capacitance C6 and the other end of capacitance C7 are all connected with ground wire, the integrated circuit
The pin 10 of RN8209C is all connected with one end of one end and resistance R12 of capacitance C10, the pin 9 of the integrated circuit RN8209C
One end of one end, capacitance C9 for being all connected with resistance R11 is connected with one end of resistance R17, the other end, the resistance of the capacitance C10
The other end of the other end of R12, the other end of resistance R11 and capacitance C9 is all connected with ground wire, the other end and the electricity of the resistance R17
Hinder one end connection of R16, the other end of the resistance R16 connect with one end of resistance R15, the other end of the resistance R15 and
One end of resistance R14 connects, and the other end of the resistance R14 is connect with one end of resistance R13, the other end of the resistance R13
Connect power supply terminal 3.
Referring to Fig. 4, power supply terminal 3 is electrically connected to measuring unit 201, and measuring unit 201 is sampled by current circuit
Resistance R8 and integrated circuit U 2 and its peripheral circuit composition, wherein integrated circuit U2 use special measuring integrated circuit RN8209C；
It is connected to crystal oscillator X1 between 1 foot of integrated circuit U2,16 feet, clock frequency is provided for integrated circuit U2；5 feet of integrated circuit U2,6
It is connect with current circuit sampling resistor R8 after foot difference series resistor R6, R10, the operation work for acquiring tested electric energy meter 6
Electric current passes through the differential voltage signal generated when the current circuit sampling resistor both ends R8, resistance R7, resistance R9 and capacitance C5, capacitance
C8 is the anti-aliasing device of the circuit；9 feet of integrated circuit U2 have concatenated 5 divider resistances R13, R14, R15, R16, R17, electricity
Hinder R11, the anti-aliasing device that resistance R12 and capacitance C9, capacitance C10 are the circuit, and by power supply terminal 3 be connected to by
Survey the power voltage supply end of electric energy meter 6, the supply voltage for acquiring tested electric energy meter 6；Integrated circuit U2 will be collected tested
The voltage and current analog signal of electric energy meter 6 is converted to digital signal, and carries out digital integration operation to it, to accurately obtain
The power consumption data of electric energy meter 6 must be tested.
In the present embodiment, referring to Fig. 5, the MCU microprocessors 204 include microprocessor U3, and the microprocessor U3 is adopted
With microprocessor R7F0C002, the pin 25 and pin 26 of the microprocessor R7F0C002 are connect with measuring unit 201, institute
The pin 33 for stating microprocessor R7F0C002 is connect with LCD display 203 to pin 48, the microprocessor R7F0C002's
Pin 50 is connect with button 202, and the pin 58 of the microprocessor R7F0C002 is connect with alarm output unit 206, described micro-
The pin 60 and pin 61 of processor R7F0C002 is connect with communication unit 205, the pin 5 of the microprocessor R7F0C002
It is connected with power supply 5 by resistance R18, the pin 6 of the microprocessor R7F0C002 is connected with power supply 5 and micro- by resistance R19
The pin 6 of processor R7F0C002 is connected with ground wire by capacitance C11, and the pin 12 of the microprocessor R7F0C002 passes through electricity
Hold C12 and be connected with ground wire, the pin 16 of the microprocessor R7F0C002 is connected with ground wire, the microprocessor by capacitance C13
The pin 19 of device R7F0C002 is connected with one end of capacitance C14 and the other end of capacitance C14 and drawing for microprocessor R7F0C002
Foot 20 connects, and the pin 21 of the microprocessor R7F0C002 is connected with ground wire, the microprocessor by capacitance C15
The pin 22 of R7F0C002 is connected with ground wire by capacitance C16, and the pin 23 of the microprocessor R7F0C002 passes through capacitance C17
It is connected with ground wire.
Referring to Fig. 5, MCU microprocessors 204 include that microprocessor U3 and its peripheral circuit form, and wherein microprocessor U3 is adopted
With microprocessor R7F0C002；25 feet of microprocessor U3,26 feet respectively with 13 feet of the integrated circuit U2 of measuring unit 201,
12 feet connect, and as the UART communication port of microprocessor U3 and integrated circuit U 2, effect is that transmission measurement unit 201 is surveyed
The power consumption data for the tested electric energy meter 6 measured carries out data operation conversion process to judge tested electricity to microprocessor U3
The power consumption numerical value of energy table 6 detects whether unqualified.MCU microprocessors 204 also with button 202, LCD display 203, communication
Unit 205, alarm output unit 206 are electrically connected；Wherein 50 feet of button 202 and the microprocessor U3 of MCU microprocessors 204
Connection, effect be input 202 triggering level signal of button to microprocessor U3, the display mould for LCD display 203 to be arranged
Formula；Wherein LCD display 203 is connect with 33 feet of the microprocessor U3 of MCU microprocessors 204 to the pins such as 48 feet, microprocessor
Device U3 is shown the numerical value such as the power consumption of tested electric energy meter 6 by LCD display 203.
In the present embodiment, referring to Fig. 6, the communication unit 205 includes communication chip U1, triode Q1, resistance R1, resistance
R2, resistance R3, resistance R4, capacitance C1 and bilateral diode D1, the communication chip U1 are described using communication chip MAX13085
The pin 1 and pin 4 of communication chip MAX13085 is connect with MCU microprocessors 204, the pin of the communication chip MAX13085
2 and pin 3 connect with one end of resistance R4, one end of the resistance R4 is connect with the collector of triode Q1, the resistance
The other end of R4 connects ground wire, and the emitter of the triode Q1 is connected with power supply 5, base stage and the resistance R1 of the triode Q1
One end connection, the other end of the resistance R1 connect with the pin 4 of communication chip MAX13085, the communication chip
The pin 5 of MAX13085 connects ground wire, the pin 6 of the communication chip MAX13085 respectively with one end of resistance R3, two-way two
One end of pole pipe D1 and signal terminal 4 connect, and the other end of the resistance R3 is connected with power supply 5, the communication chip
The pin 7 of MAX13085 is connect with one end of resistance R2, one end of bilateral diode D1 and signal terminal 4 respectively, described
The other end of resistance R2 connects ground wire, and the pin 8 of the communication chip MAX13085 connects with one end of power supply 5 and capacitance C1 respectively
It connects, the other end of the capacitance C1 connects ground wire.
Referring to Fig. 6, communication unit 205 includes RS485 communication chips U1 and its peripheral operating circuit, RS485 communication chips
U1 uses communication chip MAX13085；1 foot of RS485 communication chips U1 in communication unit 205 is data output pin, is received
The difference mode signal of RS485 circuits, and be converted to TTL signal level and exported to the microprocessor of MCU microprocessors 204 by 1 pin
4 feet of 61 foot of UART communications receptions port of U3, RS485 communication chips U3 are data input pin, MCU microprocessors 204
The data of the TTL signal level of 60 foot of UART communications receptions port of microprocessor U3 are converted to difference mode signal, and by RS485
6 feet and 7 feet of communication chip U1 are delivered to external equipment by signal terminal 4 and carry out information exchange；External communication device
Communications command can also be sent by communication unit 205 to MCU microprocessors 204, and the power consumption number for being tested electric energy meter 6 is set
The qualification determination range of value.
In the present embodiment, referring to Fig. 7, the alarm output unit 206 include relay K1, resistance R20, triode Q2 and
The base stage of diode D2, the triode Q2 are connect by resistance R20 with MCU microprocessors 204, and the emitter of triode Q2 connects
The collector of ground wire, the triode Q2 is connect with the anode of one end of relay K1 driving coils and diode D2 respectively,
The other end of the relay K1 driving coils and the cathode of diode D2 are connected with power supply 5, and the relay K1 connects with signal
Line terminals 4 connect.
Referring to Fig. 7, alarm output unit 206 is made of relay K1, resistance R20, triode Q2, diode D2；Wherein,
The base stage pin serial connection resistance R20 of triode Q2 is connected to 58 feet, the triode Q2 of the microprocessor U3 of MCU microprocessors 204
Emitter ground connection, one end pin of the collector connecting relay K1 driving coils of triode Q2, relay K1 driving coils
Other end pin connects 5V voltages, when MCU microprocessors 204 judge that the power consumption numerical value detection for being tested electric energy meter 6 is unqualified
58 feet of the microprocessor U3 of MCU microprocessors 204 export high level, defeated by triode Q2 base stages after resistance R20 current limlitings
Enter high level, transistor saturation conduction, collector becomes low level, and relay K1 coils energization driving switch contact is inhaled at this time
It closes, controls external acoustic alarm or the startup of light warning device, shutdown.Wherein diode D2 is connected anti-parallel to relay K1 coils two
Protect other devices in circuit unaffected for eliminating the inverse electromotive force generated when relay shutdown in end.
Signal terminal 4 is alarm output unit 206 and the terminals that communication unit 205 is connect with external equipment
Son.
The utility model uses modularized design, module interface（Signal terminal 4 and power supply terminal 3）Using pulling out
The formula of inserting connecting terminal, wiring are simpler, convenient.With RS485 communication interfaces, it is logical that DLT645-2007 may be used in communications protocol
Believe agreement, development cost can be reduced with electric energy meter production dependence test software, the protocol interconnection of equipment.Overall volume is small, cost
It is low, it can be not only individually used for the production test of electric energy meter power consumption, a variety of detection jigs, equipment progress function combination can be embedded in,
Merge single test step, reduces human cost.High certainty of measurement, measuring circuit use the special metering IC, can adjustment survey
Accuracy of measurement.Function is more, has the function of programmable measurement, liquid crystal display, digital communication and alarm signal output etc..
The scope of protection of the utility model includes but not limited to embodiment of above, and the scope of protection of the utility model is to weigh
Subject to sharp claim, any replacement being readily apparent that those skilled in the art that this technology is made, deformation, improvement are each fallen within
The scope of protection of the utility model.
Claims (6)
1. a kind of electric energy meter power consumption test module, it is characterised in that：Including shell, electronic circuit cell, power supply terminal and
Signal terminal, the electronic circuit cell includes measuring unit, button, MCU microprocessors, LCD display, communication unit
And alarm output unit, the power supply terminal, signal terminal, button and LCD display are installed in the shell
On, the measuring unit, MCU microprocessors, communication unit and alarm output unit are installed in the inside of the shell, described
Power supply terminal is connected with power supply, and power supply terminal is connect with measuring unit, and the measuring unit connects with MCU microprocessors
It connects, the MCU microprocessors are connect with button, LCD display, communication unit and alarm output unit respectively, and the communication is single
Member and alarm output unit are connect with signal terminal, and signal terminal realizes information for connecting external equipment
Interaction, the power supply terminal is for connecting tested electric energy meter.
2. electric energy meter power consumption test module according to claim 1, it is characterised in that：The measuring unit includes resistance R5
To resistance R17, capacitance C2 to capacitance C10, crystal oscillator X1 and integrated circuit RN8209C, one end of the resistance R8, the one of resistance R7
End and one end of resistance R6 are all connected with power supply terminal, the other end of the resistance R8, one end of resistance R9 and resistance R10
One end is all connected with power supply terminal, and the other end of the resistance R7 and the other end of resistance R9 are all connected with ground wire, the resistance
The other end of R10 is all connected with one end of capacitance C8 and the pin 6 of integrated circuit RN8209C, the other end and electricity of the capacitance C8
The one end for holding C5 is all connected with ground wire, the other end of the capacitance C5 respectively with the other end of resistance R6 and integrated circuit RN8209C
Pin 5 connect, the pin 1 of the integrated circuit RN8209C connect with one end of one end of capacitance C4 and crystal oscillator X1 respectively, institute
One end of the other end, crystal oscillator X1 of stating capacitance C4 connects ground wire, the other end and crystal oscillator of the capacitance C2 with one end of capacitance C2
The pin 16 of the other end connection integrated circuit RN8209C of X1, the pin 4 of the integrated circuit RN8209C and the one of resistance R5
End connection, the pin 15 of the integrated circuit RN8209C are separately connected the other end and power supply of resistance R5, the integrated circuit
The pin 14 of RN8209C is separately connected one end and the ground wire of capacitance C3, and the other end of the capacitance C3 connects power supply, described integrated
The pin 13 and pin 12 of circuit RN8209C connects MCU microprocessors, and the pin 11 of the integrated circuit RN8209C connects respectively
One end of one end and capacitance C7 of capacitance C6 is connect, the other end of the capacitance C6 and the other end of capacitance C7 are all connected with ground wire, institute
State integrated circuit RN8209C pin 10 be all connected with capacitance C10 one end and resistance R12 one end, the integrated circuit
The pin 9 of RN8209C is all connected with one end of resistance R11, one end of capacitance C9 is connected with one end of resistance R17, the capacitance C10
The other end, the other end of resistance R12, the other end of resistance R11 and capacitance C9 the other end be all connected with ground wire, the resistance
The other end of R17 is connect with one end of resistance R16, and the other end of the resistance R16 is connect with one end of resistance R15, the electricity
The other end of resistance R15 is connect with one end of resistance R14, and the other end of the resistance R14 is connect with one end of resistance R13, described
The other end of resistance R13 connects power supply terminal.
3. electric energy meter power consumption test module according to claim 2, it is characterised in that：The MCU microprocessors include micro-
Processor U3, the microprocessor U3 use microprocessor R7F0C002, the pin 25 of the microprocessor R7F0C002 and draw
Foot 26 is connect with measuring unit, and pin 33 to the pin 48 of the microprocessor R7F0C002 is connect with LCD display, institute
State the pin 50 of microprocessor R7F0C002 and by key connection, pin 58 and the warning output list of the microprocessor R7F0C002
Member connection, the pin 60 and pin 61 of the microprocessor R7F0C002 are connect with communication unit, the microprocessor
The pin 5 of R7F0C002 is connected with power supply by resistance R18, and the pin 6 of the microprocessor R7F0C002 is connected by resistance R19
The pin 6 for being connected to power supply and microprocessor R7F0C002 is connected with ground wire by capacitance C11, the microprocessor R7F0C002's
Pin 12 is connected with ground wire by capacitance C12, and the pin 16 of the microprocessor R7F0C002 is connected with ground by capacitance C13
The pin 19 of line, the microprocessor R7F0C002 is connected with one end of capacitance C14 and the other end and microprocessor of capacitance C14
The pin 20 of R7F0C002 connects, and the pin 21 of the microprocessor R7F0C002 is connected with ground wire by capacitance C15, described micro-
The pin 22 of processor R7F0C002 is connected with ground wire by capacitance C16, and the pin 23 of the microprocessor R7F0C002 passes through
Capacitance C17 is connected with ground wire.
4. electric energy meter power consumption test module according to claim 3, it is characterised in that：The communication unit includes communication core
Piece U1, triode Q1, resistance R1, resistance R2, resistance R3, resistance R4, capacitance C1 and bilateral diode D1, the communication chip U1
Using communication chip MAX13085, the pin 1 and pin 4 of the communication chip MAX13085 are connect with MCU microprocessors, described
The pin 2 and pin 3 of communication chip MAX13085 is connect with one end of resistance R4, one end and the triode Q1 of the resistance R4
Collector connection, the other end of the resistance R4 connects ground wire, and the emitter of the triode Q1 is connected with power supply, described three
The base stage of pole pipe Q1 is connect with one end of resistance R1, and the other end of the resistance R1 connects with the pin 4 of communication chip MAX13085
Connect, the pin 5 of the communication chip MAX13085 connects ground wire, the pin 6 of the communication chip MAX13085 respectively with resistance
One end of R3, one end of bilateral diode D1 are connected with signal terminal, and the other end of the resistance R3 is connected with power supply, institute
The pin 7 for stating communication chip MAX13085 is sub with one end of resistance R2, one end of bilateral diode D1 and signal terminal respectively
Connection, the other end of the resistance R2 connect ground wire, the pin 8 of the communication chip MAX13085 respectively with power supply and capacitance C1
One end connection, the other end of the capacitance C1 connects ground wire.
5. electric energy meter power consumption test module according to claim 4, it is characterised in that：The alarm output unit include after
Electric appliance K1, resistance R20, triode Q2 and diode D2, the base stage of the triode Q2 pass through resistance R20 and MCU microprocessors
Connection, the emitter of triode Q2 connect ground wire, the collector of the triode Q2 respectively with relay K1 driving coils one
The anode connection at end and diode D2, the other end of the relay K1 driving coils and the cathode of diode D2 are connected with electricity
Source, the relay K1 are connect with signal terminal.
6. electric energy meter power consumption test module according to any one of claims 1 to 5, it is characterised in that：The LCD display
Mounted on the upper surface of the shell, the button is mounted on the lower surface of shell, and the leading flank of the shell and lower surface connect
It connects position and is equipped with termination recess, the power supply terminal and signal terminal are installed in termination recess.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111398888A (en) * | 2020-04-14 | 2020-07-10 | 南方电网科学研究院有限责任公司 | Low-power-consumption dynamic monitoring device and equipment of intelligent electric meter and using method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111398888A (en) * | 2020-04-14 | 2020-07-10 | 南方电网科学研究院有限责任公司 | Low-power-consumption dynamic monitoring device and equipment of intelligent electric meter and using method |
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