CN207281503U - Independent electrical parameter list - Google Patents
Independent electrical parameter list Download PDFInfo
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- CN207281503U CN207281503U CN201720360991.3U CN201720360991U CN207281503U CN 207281503 U CN207281503 U CN 207281503U CN 201720360991 U CN201720360991 U CN 201720360991U CN 207281503 U CN207281503 U CN 207281503U
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- signal acquisition
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Abstract
It the utility model is related to a kind of independent electrical parameter list,The utility model solves the deficiencies in the prior art,Including power circuit,Telecommunication circuit,Data pipe display circuit,Analogue signal acquisition circuit,Monitoring signal Acquisition Circuit and processor module,The input terminal of the power circuit and the A phase electricity outputs end of three phase mains connect,The digital power end of power circuit powers data pipe display circuit and processor module,The B phase electricity output ends of three phase mains and the connection of the input terminal of C phase electricity output ends and analogue signal acquisition circuit,The output terminal of analogue signal acquisition circuit is electrically connected by A/D convertor circuit with processor module,The signal output part of power circuit is electrically connected also by A/D convertor circuit with the processor module,The input terminal of the monitoring signal Acquisition Circuit and the digital power end of power circuit connect,The output terminal of monitoring signal Acquisition Circuit is electrically connected with processor module,Processor module is electrically connected with data pipe display circuit and telecommunication circuit.
Description
Technical field
The utility model belongs to test table, more particularly to a kind of independent electrical parameter list.
Background technology
In the safety testing field of electric equipment products, the accurate measurement of electric equipment products internal operating voltages is that product is electrically strong
The premise that degree and creepage distance and electric clearance measure, for also having clear and definite definition in operating voltage standard（Operating voltage：Device
Tool is with constant voltage and when running in normal working conditions, ceiling voltage that the part of consideration is born）, due in work electricity
2 output impedances being measured during pressure test are unknown, therefore in measurement process, it may appear that different instrument is hindered because of input
It is anti-different and test result differs, and fall far short with actual operating voltage, just at present for, general desk-top universal meter
Input impedance for 200k or so, the input impedance of handheld multimeter is 1M Ω or so, it is impossible to meets that operating voltage test will
To ask, the test of operating voltage at present also has to be carried out using oscillograph, although 100:1 oscillograph inquires into the main anti-up to 66M of input
Ω, but the requirement of operating voltage measurement is unable to reach in terms of its measuring accuracy.More important is equipment complexity is high, volume compared with
Greatly, install relatively complicated.
China Patent Publication No. CN203012007U, publication date on June 19th, 2013, discloses a kind of novel voltmeter,
Including：Shell body, the shell body are internally provided with pointer voltage table unit sum number word formula voltage table unit, the pointer-type electricity
Press table unit and digital voltage table unit in parallel, the pointer voltage table unit is equipped with needle dc voltmeter switch, institute
Digital voltage table unit is stated to switch equipped with digital voltmeter.This technical solution like the prior art, equipment complexity
Height, volume is larger, and installation is relatively complicated.
Utility model content
The utility model aim is to solve the problems, such as that current measuring device equipment is complicated, there is provided a kind of independent electrical parameter
Table.
Technical solution is used by the utility model solves its technical problem：A kind of independent electrical parameter list, it is overall by three
Phase power supply is powered, including the collection of power circuit, telecommunication circuit, data pipe display circuit, analogue signal acquisition circuit, monitoring signal
Circuit and processor module, the input terminal of the power circuit are connected with the A phase electricity outputs end of three phase mains, the number of power circuit
Word power end powers data pipe display circuit and processor module, the B phase electricity output ends and C phase electricity output ends of three phase mains with
The input terminal connection of analogue signal acquisition circuit, the output terminal of analogue signal acquisition circuit pass through A/D convertor circuit and processor die
Block is electrically connected, and the signal output part of power circuit is electrically connected also by A/D convertor circuit with the processor module, the monitoring
The input terminal of signal acquisition circuit and the digital power end of power circuit connect, the output terminal of monitoring signal Acquisition Circuit and processing
Device module is electrically connected, and processor module is electrically connected with data pipe display circuit and telecommunication circuit.The utility model employs simply
Structure, circuit is simple, build conveniently, for monitoring voltage, electric current, active power and the power factor of power load, possess
It is small, it is easy for installation the advantages that.In the inlet wire distribution box of installation at home, the electricity consumption feelings of current family can be monitored in real time
Condition.Power consumption for measuring a certain equipment etc. can also be directly used in.This equipment is equipped with single A/D convertor circuit, and cost is opposite
It is higher, suitable for having in the equipment compared with high measurement accuracy requirement.The erection of telecommunication circuit can carry out remote data transmission, be applicable in
Scope is wider.
Preferably, telecommunication circuit and the RS485 communication interfaces of external equipment connect, including SP485EEN chips, resistance
R17, resistance R18, resistance R16, diode D20 and capacitance C30, SP485EEN chip RXD0 ends and the cathode of diode D20 connect
Connect, the anode of diode D20 is electrically connected with the serial ports of processor module, and the anode of diode D20 passes through resistance R17 and power supply electricity
The digital power end connection on road, the octal of SP485EEN chips are grounded by capacitance C30, the octal of SP485EEN chips
It is connected with the digital power end of power circuit, the digital power end of power circuit also passes through resistance R16 and SP485EEN chips
Crus secunda and the connection of the 3rd foot, the crus secunda of SP485EEN chips and the 3rd foot are also electrically connected with processor module,
4th foot of SP485EEN chips is electrically connected with the serial ports of processor module, the 6th foot of SP485EEN chips and the 7th foot with
The RS485 communication interfaces connection of external equipment, is connected between the 6th foot of SP485EEN chips and the 7th foot by resistance R18
Connect.
Preferably, the processor module includes ATMEGA48 chips, the pins of ATMEGA48 chips respectively with data
Pipe display circuit, A/D convertor circuit, monitoring signal Acquisition Circuit are electrically connected.
Preferably, the A/D convertor circuit is MCP chip circuits or MAX115 chip circuits, MCP chip circuits it is defeated
The output terminal of the input terminal and analogue signal acquisition circuit that enter end or MAX115 chip circuits connects, the output of MCP chip circuits
The output terminal of end or MAX115 chip circuits is connected with processor module.MCP chip prices are relatively low, and precision is general, MAX115 cores
Piece price higher, precision is more preferable, according to the demand of client, can voluntarily select.
Preferably, the analogue signal acquisition circuit includes resistance R3, resistance R8, resistance R4, resistance R9, diode D8
With diode D9, the first end of resistance R3 is connected with the B phase electricity outputs end of three phase mains, second end and the AD conversion electricity of resistance R3
Road is electrically connected, and the second end of resistance R3 is connected with the cathode of diode D8, and the second end of resistance R3 also passes through resistance R8 and two poles
The anode connection of pipe D8, the plus earth of diode D8, the first end of resistance R4 are connected with the C phase electricity outputs end of three phase mains,
The second end of resistance R4 is electrically connected by diode D9 with A/D convertor circuit, and the cathode of diode D9 is also grounded by resistance R9.
Preferably, monitoring signal Acquisition Circuit includes resistance R10, resistance R11, resistance R12 and resistance R13, diode
Output of the first end of the first end of D11, resistance R10, the first end of resistance R11 and resistance R13 with the voltage stabilizing chip U2
End connection, the second end of resistance R10 and the second end of resistance R11 are connected with an input and output pin of processor module,
The second end of resistance R13 is also connected with an input and output pin of processor module, and the second end of resistance R10 passes through diode
D11 is grounded, and the second end of resistance R13 is grounded by resistance R12.This circuit mainly shields, will without high accuracy
Ask, therefore the AD conversion for the low precision that can be directly carried using processor module can achieve the goal.
The substantial effect of the utility model is：The utility model employs easy structure, and circuit is simple, the side of building
Just, for monitoring voltage, electric current, active power and the power factor of power load, possesses the advantages that small, easy for installation.
In the inlet wire distribution box of installation at home, the electricity consumption situation of current family can be monitored in real time.Measurement can also be directly used in
Power consumption of a certain equipment etc..This equipment is equipped with single A/D convertor circuit, and the cost is relatively high, suitable for having compared with high measurement
In the equipment of required precision.The erection of telecommunication circuit can carry out remote data transmission, and the scope of application is wider.
Brief description of the drawings
Fig. 1 is a kind of electrical block diagram of processor module in the present embodiment；
Fig. 2 is a kind of electrical block diagram of telecommunication circuit in the present embodiment；
Fig. 3 is a kind of electrical block diagram of analogue signal acquisition circuit in the present embodiment；
Fig. 4 is a kind of electrical block diagram of monitoring signal Acquisition Circuit in the present embodiment；
Fig. 5 is a kind of circuit frame figure of the present embodiment.
In figure：1st, processor module, 2, three phase mains, 3, power circuit, 4, monitoring signal Acquisition Circuit, 5, analog signal
Acquisition Circuit, 6, A/D convertor circuit, 7, telecommunication circuit, 8, data pipe display circuit.
Embodiment
Below by specific embodiment, with reference to attached drawing, the technical solution of the utility model is described in further detail.
Embodiment：
A kind of independent electrical parameter list（Referring to attached drawing 1, attached drawing 2, attached drawing 3, attached drawing 4 and attached drawing 5）, it is overall to be supplied by three phase mains
Electricity 2, including power circuit 3, telecommunication circuit 7, data pipe display circuit 8, analogue signal acquisition circuit 5, monitoring signal collection electricity
Road 4 and processor module 1, the input terminal of the power circuit are connected with the A phase electricity outputs end of three phase mains, the number of power circuit
Word power end powers data pipe display circuit and processor module, the B phase electricity output ends and C phase electricity output ends of three phase mains with
The input terminal connection of analogue signal acquisition circuit, the output terminal of analogue signal acquisition circuit pass through A/D convertor circuit 6 and processor
Module is electrically connected, and the signal output part of power circuit is electrically connected also by A/D convertor circuit with the processor module, the prison
The digital power end of the input terminal and power circuit of controlling signal acquisition circuit connects, the output terminal of monitoring signal Acquisition Circuit and place
Manage device module to be electrically connected, processor module is electrically connected with data pipe display circuit and telecommunication circuit.Telecommunication circuit and external equipment
The connection of RS485 communication interfaces, including SP485EEN chips, resistance R17, resistance R18, resistance R16, diode D20 and capacitance
C30, SP485EEN chip RXD0 ends are connected with the cathode of diode D20, the anode of diode D20 and the serial ports of processor module
It is electrically connected, the anode of diode D20 is connected by the digital power end of resistance R17 and power circuit, and the of SP485EEN chips
Octal is grounded by capacitance C30, and the octal of SP485EEN chips is also connected with the digital power end of power circuit, power circuit
Digital power end be also connected by resistance R16 with the crus secunda of SP485EEN chips and the 3rd foot, SP485EEN chips
Crus secunda and the 3rd foot are also electrically connected with processor module, the 4th foot of SP485EEN chips and the serial port power of processor module
Connection, the 6th foot and the RS485 communication interfaces of the 7th foot and the external equipment connection of SP485EEN chips, SP485EEN chips
The 6th foot and the 7th foot between connected by resistance R18.The processor module includes ATMEGA48 chips, ATMEGA48
The pin of chip is electrically connected with data pipe display circuit, A/D convertor circuit, monitoring signal Acquisition Circuit respectively.The AD conversion electricity
Road is MCP chip circuits or MAX115 chip circuits, the input terminal of MCP chip circuits or the input terminal of MAX115 chip circuits with
The output terminal connection of analogue signal acquisition circuit, the output terminal of MCP chip circuits or output terminal and the place of MAX115 chip circuits
Manage the connection of device module.The analogue signal acquisition circuit includes resistance R3, resistance R8, resistance R4, resistance R9, diode D8 and two
The first end of pole pipe D9, resistance R3 and the B phase electricity outputs end of three phase mains connect, second end and the A/D convertor circuit electricity of resistance R3
Connection, the second end of resistance R3 are connected with the cathode of diode D8, and the second end of resistance R3 also passes through resistance R8 and diode D8
Anode connection, the plus earth of diode D8, the C phase electricity outputs end of the first end of resistance R4 and three phase mains connects, resistance
The second end of R4 is electrically connected by diode D9 with A/D convertor circuit, and the cathode of diode D9 is also grounded by resistance R9.Monitoring
Signal acquisition circuit includes resistance R10, resistance R11, resistance R12 and resistance R13, diode D11, the first end of resistance R10, electricity
The output terminal of the first end of resistance R11 and the first end of resistance R13 with the voltage stabilizing chip U2 is connected, the second end of resistance R10
Be connected with the second end of resistance R11 with an input and output pin of processor module, the second end of resistance R13 also with processing
The input and output pin connection of device module, the second end of resistance R10 are grounded by diode D11, the second end of resistance R13
It is grounded by resistance R12.
The present embodiment employs easy structure, and circuit is simple, builds conveniently, for monitoring voltage, the electricity of power load
Stream, active power and power factor, possess the advantages that small, easy for installation., can in the inlet wire distribution box of installation at home
To monitor the electricity consumption situation of current family in real time.Power consumption for measuring a certain equipment etc. can also be directly used in.This equipment arranges
There is single A/D convertor circuit, the cost is relatively high, suitable for having in the equipment compared with high measurement accuracy requirement.The frame of telecommunication circuit
If remote data transmission can be carried out, the scope of application is wider.
Embodiment described above is a kind of preferable scheme of the utility model, not the utility model is made any
Formal limitation, also has other variations and remodeling on the premise of without departing from the technical solution described in claim.
Claims (6)
1. a kind of independent electrical parameter list, overall to be powered by three phase mains, it is characterised in that：Including power circuit, telecommunication circuit, number
According to pipe display circuit, analogue signal acquisition circuit, monitoring signal Acquisition Circuit and processor module, the input of the power circuit
End is connected with the A phase electricity outputs end of three phase mains, and the digital power end of power circuit is to data pipe display circuit and processor die
Block is powered, the B phase electricity output ends of three phase mains and the connection of the input terminal of C phase electricity output ends and analogue signal acquisition circuit, simulation
The output terminal of signal acquisition circuit is electrically connected by A/D convertor circuit with processor module, and the signal output part of power circuit also leads to
Cross A/D convertor circuit to be electrically connected with the processor module, the input terminal of the monitoring signal Acquisition Circuit and the number of power circuit
Word power end connects, and the output terminal of monitoring signal Acquisition Circuit is electrically connected with processor module, and processor module is shown with data pipe
Show that circuit and telecommunication circuit are electrically connected.
2. independent electrical parameter list according to claim 1, it is characterised in that：The RS485 of telecommunication circuit and external equipment leads to
Believe interface connection, including SP485EEN chips, resistance R17, resistance R18, resistance R16, diode D20 and capacitance C30,
SP485EEN chip RXD0 ends are connected with the cathode of diode D20, and the anode of diode D20 and the serial ports of processor module are electrically connected
Connect, the anode of diode D20 is connected by the digital power end of resistance R17 and power circuit, the octal of SP485EEN chips
It is grounded by capacitance C30, the octal of SP485EEN chips is also connected with the digital power end of power circuit, the number of power circuit
Word power end is also connected by resistance R16 with the crus secunda of SP485EEN chips and the 3rd foot, and the second of SP485EEN chips
Foot and the 3rd foot are also electrically connected with processor module, and the 4th foot of SP485EEN chips and the serial ports of processor module are electrically connected
Connect, the 6th foot and the RS485 communication interfaces of the 7th foot and the external equipment connection of SP485EEN chips, SP485EEN chips
Connected between 6th foot and the 7th foot by resistance R18.
3. independent electrical parameter list according to claim 2, it is characterised in that：The processor module includes ATMEGA48 cores
Piece, the pin of ATMEGA48 chips are electrically connected with data pipe display circuit, A/D convertor circuit, monitoring signal Acquisition Circuit respectively.
4. independent electrical parameter list according to claim 2, it is characterised in that：The A/D convertor circuit is MCP chip circuits
Or MAX115 chip circuits, the input terminal of MCP chip circuits or the input terminal of MAX115 chip circuits and collection of simulant signal electricity
The output terminal connection on road, the output terminal of MCP chip circuits or the output terminal of MAX115 chip circuits are connected with processor module.
5. independent electrical parameter list according to claim 2, it is characterised in that：The analogue signal acquisition circuit includes resistance
R3, resistance R8, resistance R4, resistance R9, diode D8 and diode D9, the first end of resistance R3 and the B phases electricity of three phase mains are defeated
Outlet connects, and the second end of resistance R3 is electrically connected with A/D convertor circuit, and the second end of resistance R3 is connected with the cathode of diode D8,
The second end of resistance R3 is also connected by resistance R8 with the anode of diode D8, the plus earth of diode D8, and the of resistance R4
One end and the C phase electricity outputs end of three phase mains connect, and the second end of resistance R4 is electrically connected by diode D9 with A/D convertor circuit,
The cathode of diode D9 is also grounded by resistance R9.
6. independent electrical parameter list according to claim 4, it is characterised in that：Monitoring signal Acquisition Circuit include resistance R10,
Resistance R11, resistance R12 and resistance R13, diode D11, the first end of resistance R10, the first end of resistance R11 and resistance R13
Output terminal of the first end with voltage stabilizing chip U2 in power circuit is connected, and the second end of resistance R10 and the second end of resistance R11 are equal
It is connected with an input and output pin of processor module, the second end of resistance R13 is also defeated with an input of processor module
Go out pin connection, the second end of resistance R10 is grounded by diode D11, and the second end of resistance R13 is grounded by resistance R12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720360991.3U CN207281503U (en) | 2017-04-07 | 2017-04-07 | Independent electrical parameter list |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720360991.3U CN207281503U (en) | 2017-04-07 | 2017-04-07 | Independent electrical parameter list |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207281503U true CN207281503U (en) | 2018-04-27 |
Family
ID=61991601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720360991.3U Active CN207281503U (en) | 2017-04-07 | 2017-04-07 | Independent electrical parameter list |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207281503U (en) |
-
2017
- 2017-04-07 CN CN201720360991.3U patent/CN207281503U/en active Active
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