CN205982497U - AC distribution first cabinet inlet wire of row and monitoring module that is qualified for next round of competitions - Google Patents
AC distribution first cabinet inlet wire of row and monitoring module that is qualified for next round of competitions Download PDFInfo
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- CN205982497U CN205982497U CN201620906836.2U CN201620906836U CN205982497U CN 205982497 U CN205982497 U CN 205982497U CN 201620906836 U CN201620906836 U CN 201620906836U CN 205982497 U CN205982497 U CN 205982497U
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Abstract
The utility model discloses a AC distribution first cabinet inlet wire of row and monitoring module that is qualified for next round of competitions, including MCU central processing unit, voltage sampling circuit, inlet wire measuring circuit, the measuring circuit of being qualified for the next round of competitions, inlet wire electric current sampling circuit, play line current sampling circuit, inlet wire switch detection circuit, the switch detection circuit that is qualified for the next round of competitions, relay output circuit, memory circuit and RS485 communication circuit, its characterized in that: the main road inlet wire voltage signal of one of them looks is after voltage sampling circuit takes a sample, and the voltage measurement passageway of the reentrant measuring circuit of being qualified for the next round of competitions carries out voltage signal to be handled, the branch road is qualified for the next round of competitions and is qualified for the next round of competitions after the current signal gets into the current sampling circuit of being qualified for the next round of competitions through the branch road that produces behind the outside mutual -inductor, and rethread analog switch circuit selects to switch on and gets into the measuring circuit of being qualified for the next round of competitions, the inlet wire measuring circuit and the measuring circuit of being qualified for the next round of competitions get into MCU central processing unit through the SPI bus and handle. The utility model discloses the wiring is simple, and it is easy to seek the trouble, has strengthened electrical safety nature.
Description
Technical field
This utility model is related to a kind of AC distribution first cabinet of each row inlet wire, the improvement of outlet monitoring device, belongs to industrial instrument
Technical field, specifically a kind of AC distribution first cabinet of each row inlet wire and outlet monitoring modular, are based on vouching in Cortex-M3
A electrical quantity monitoring modular of piece machine, can measure main road inlet wire electrical quantity information and 60 branch road outlet electrical quantity letters simultaneously
Breath is it is adaptable to the power distribution cabinet such as telecommunications, factory, school, hospital, first cabinet of each row monitor place.
Background technology
The large-scale AC power distribution cabinet/AC distribution panel using at present, first cabinet of each row typically have the input of three-phase main road inlet wire, 6 60 lists
Phase branch road outlet exports, and main road inlet wire typically accesses from transformator or electrical network main line, and its current rating range is larger, generally
200 1000A, branch road outlet is commonly used to different load equipments and powers, such as server matrix, air-conditioning, blower fan, motor etc.
Equipment, its current rating range is less, generally 30 100A.Main road inlet wire typically have active and standby two input switches or
Fuse, each single-phase branch road outlet has a switch or fuse.Because electricity consumption site requirements are more strict, need to slap in real time
Control the power consumption parameter information of all of inlet wire and outlet, prevented in advance with carrying out fault, fault finds in time, electricity consumption real time measure
And peak value predicts in advance.
In traditional main road inlet wire：Main road primary voltage signal is sampled by voltage sample circuit 2, main road inlet wire electricity
Stream signal is sampled by inlet wire current sample circuit 5, and the primary voltage signal after sampling and inlet wire current signal enter
Inlet wire measuring circuit 3, is interacted by bus with central processing unit afterwards；Service entrance switch signal detects electricity by service entrance switch
Road 8 enters central processing unit, the corresponding process that central processing unit can be carried out according to the switching signal of input；When ammeter need into
During the output of row relay, outputting circuit for relay 10 is entered at line relay accordingly according to the signal that central processing unit exports
Reason；The inlet wire data needing in ammeter to be stored can be stored by central processing unit by storage circuit 11, works as centre
After reason device power-off re-powers, central processing unit can read the data of storage from inlet wire storage circuit 11, carries out normal
Work；When outside need read data from inlet wire ammeter or to inlet wire ammeter in write data when, can by external communication total
Order is sent in the inlet wire ammeter wanting interaction by line, reaches the instruction after inlet wire ammeter and is entered by RS485 communicating circuit 12
Central processing unit, and central processing unit can carry out different operations according to the difference of instruction, central processing unit can pass through simultaneously
RS485 communicating circuit 12 replys corresponding instruction to tell outside oneself to be successfully received this order, and has carried out phase
The operation answered.
In traditional branch road outlet：Likewise, branch road line voltage signal is sampled by voltage sample circuit 2,
Branch road outlet current signal is sampled by outlet current sampling circuit 6, and the line voltage signal after sampling and outlet are electric
Stream signal enters outlet measuring circuit 4, is interacted by bus with central processing unit afterwards；Outlet switch signal passes through outlet
Switch detection circuit 9 enters central processing unit, the corresponding place that central processing unit can be carried out according to the outlet switch signal of input
Reason；When ammeter needs to carry out line relay output, outputting circuit for relay 10 enters according to the signal that central processing unit exports
Row goes out line relay accordingly and processes；The outlet data needing in ammeter to be stored can be passed through storage circuit by central processing unit
11 are stored, and after central processing unit power-off re-powers, central processing unit can read storage from storage circuit 11
Outlet data, is normally worked；When outside need read data from outlet ammeter or to outlet ammeter in write data
When, order can be sent in the outlet ammeter wanting interaction by external communication bus, reach the instruction after outlet ammeter and pass through
RS485 communicating circuit 12 enters central processing unit, and central processing unit can carry out different operations according to the difference of instruction, simultaneously
Central processing unit can reply corresponding instruction to tell that outside oneself has been successfully received this by RS485 communicating circuit 12
Bar order, and carried out corresponding operation.
It is disadvantageous in that：Traditional AC distribution first cabinet of each row inlet wire and outlet monitoring in, each main road inlet wire and
Branch road outlet is fitted with a measuring instrument, so do not only result in wiring complicated, bulky, relatively costly, search fault
Loaded down with trivial details, also reduce the electrical security of cabinet.
Content of the invention
It is simple, easy to use that this utility model provides a kind of structure, only main road primary voltage and electric current need to be taken
Sample, goes out line current and is sampled it is possible to realize the voltage to main road inlet wire and all of branch road outlet, electricity to all of branch road
The power consumption parameter such as stream, power, electric energy, harmonic wave, switch or fuse state measure and measure, and reduce the exchange of testing cost
Distribution first cabinet of each row inlet wire and outlet monitoring modular.
For reaching object above, this utility model be employed technical scheme comprise that：This AC distribution first cabinet of each row inlet wire and going out
Line monitoring modular, including MCU central processing unit, voltage sample circuit, inlet wire measuring circuit, outlet measuring circuit, inlet wire current
Sample circuit, outlet current sampling circuit, service entrance switch testing circuit, outlet switch testing circuit, outputting circuit for relay, deposit
Storing up electricity road and RS485 communicating circuit；It is defeated that the service entrance switch signal of main road is converted into level signal by service entrance switch testing circuit
Enter in MCU central processing unit, the outlet switch signal of branch road is converted into level signal by outlet switch testing circuit and inputs MCU
In central processing unit；MCU central processing unit exports the break-make of low and high level signal control relay output circuit；MCU centre
Reason device will gather calculated data and store in real time in storage circuit；MCU central processing unit passes through RS485 communicating circuit
Carry out data interaction with outside harvester or touch screen；Three-phase main road primary voltage signal takes respectively through the voltage of respective adaptation
After sample circuit is sampled, respectively enter inlet wire measuring circuit；Three-phase main road inlet wire is respectively through the outside mutual inductance of respective adaptation
The main road inlet wire current signal producing after device, then after respectively enteing the inlet wire current sample circuit of respective adaptation, enter back into inlet wire
Measuring circuit；It is characterized in that：The main road primary voltage signal of wherein one phase is after voltage sample circuit is sampled, then enters
The voltage measurement passage entering outlet measuring circuit carries out voltage signal process；The branch road that branch road outlet produces after outside transformer
After outlet current signal enters outlet current sampling circuit, then conducting is selected to enter outlet measurement electricity by analog switching circuit
Road；Inlet wire measuring circuit and outlet measuring circuit enter MCU central processing unit by spi bus and are processed.
This utility model is implemented also by following measure：Described branch road outlet is provided with 60 single-phase branch road outlets, and each is single
The branch road outlet current signal that phase branch road outlet produces respectively after the respective outside transformer being adapted to, enters back into respective adaptation
Outlet current sampling circuit, every 8 single-phase branch road outlets are one group, and remaining 4 single-phase branch road outlets are one group, and every group single-phase
Branch road outlet is all correspondingly arranged an analog switching circuit and an outlet measuring circuit；
Described outlet measuring circuit, including resistance, electric capacity and No. two chips, No. two chips adopt CS5463, No. two cores
The VIN+ pin of piece passes through ten No. eight resistance and connects A phase primary voltage sampled signal anode, and VIN- pin connects A phase primary voltage
Sampled signal negative terminal, is in series with ten No. four electric capacity between VIN+ pin and VIN- pin；The VREFOUT pin of No. two chips and
VREFIN pin connects, and passes through ten No. eight electric capacity and be digitally connected；The VA- pin of No. two chips and IIN- pin and simulation
Ground connects, and VA+ pin and PFMON pin pass through an electric capacity and be digitally connected, VA+ pin and PFMON pin and+5V power supply
Connect；The IIN+ pin of No. two chips passes through No. ten electric capacity respectively and ten No. nine resistance are connected with simulation ground；No. two chips
XOUT pin is connected with XIN pin by crystal oscillator；The DGND pin of No. two chips be digitally connected；The VD+ of No. two chips draws
Foot is connected with 3.3V positive source；
Described analog switching circuit, including resistance, electric capacity and No. three chips, No. three chips adopt CD4051, No. three cores
The OUT/IN pin of piece is connected with simulation ground, and the OUT/IN pin of No. three chips is passed through No. seven electric capacity and is connected with simulation ground, and VDD draws
Foot is connected with 3.3V positive source, and VEE pin is connected with -3.3V power supply, and VSS pin is connected with simulation ground, INH pin with digital
Ground connects；The I0 pin of No. three chips, I1 pin, I2 pin, I3 pin, I4 pin, I5 pin, I6 pin and I7 pin are respectively
Connect with the outfan of each outlet current sampling circuit of corresponding a group in eight groups of single-phase branch road outlets；
Described MCU central processing unit adopts LPC1763FBD100；The P2.3 pin of MCU central processing unit and eight groups of lists
The SCLK pin of eight corresponding No. two chips of phase branch road outlet is connected；The P2.4 pin of MCU central processing unit and eight groups
The SDO pin of eight corresponding No. two chips of single-phase branch road outlet is connected；The P2.6 pin of MCU central processing unit and eight groups
The RESET pin of eight corresponding No. two chips of single-phase branch road outlet is connected；The P2.7 pin of MCU central processing unit and eight
The SDI pin organizing eight corresponding No. two chips of single-phase branch road outlet is connected；The P2.8 pin of MCU central processing unit and eight
The A pin organizing eight corresponding No. three chips of single-phase branch road outlet is connected；The P2.9 pin of MCU central processing unit and eight groups
The B pin of eight corresponding No. three chips of single-phase branch road outlet is connected；The P0.16 pin of MCU central processing unit and eight groups
The C pin of eight corresponding No. three chips of single-phase branch road outlet is connected；The P2.5 pin of MCU central processing unit, P1.0 draw
Foot, P1.1 pin, P1.2 pin, P1.3 pin, P1.4 pin, P1.5 pin and P1.6 pin are gone out with eight groups of single-phase branch roads respectively
The CS pin of eight corresponding No. two chips of line is connected；
The P2.0 pin of MCU central processing unit, P2.1 pin, P2.2 pin are defeated with RS485 communicating circuit respectively
Go out, input, sequencing contro connects；The P0.15 pin of MCU central processing unit is connected with service entrance switch testing circuit outfan；
The P1.23 pin of MCU central processing unit is connected with outputting circuit for relay input；No. P1.29 of MCU central processing unit is drawn
The data pins of foot, P0.0 pin, P0.1 pin and storage circuit, clock, write-protect pin are connected；MCU centre
The P2.11 pin of reason device, P2.12 pin, P0.17 pin, P0.18 pin, P0.19 pin and inlet wire measurement electricity
The reset pin on road, data input, data output, clock input and electric energy verification pin are connected；MCU central processing unit
P0.23 pin is connected with the outfan of outlet switch testing circuit.
The beneficial effects of the utility model are：Compared with monitoring power distribution module in the market, this utility model is adopted
Concentrate design with multichannel, the electrical quantity information of a road three-phase main road inlet wire and the single-phase branch road outlet of 60 tunnels can be measured simultaneously, connect
Line is simple, small volume, cost are relatively low, module number is few, searches fault easily, enhances the electrical security of cabinet.
Brief description
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of outlet measuring circuit of the present utility model and analog switching circuit.
Fig. 3 is the circuit theory diagrams of MCU central processing unit of the present utility model.
In figure：1st, MCU central processing unit；2nd, primary voltage sample circuit；3rd, inlet wire measuring circuit；4th, outlet measurement electricity
Road；5th, inlet wire current sample circuit；6th, outlet current sampling circuit；7th, analog switching circuit；8th, service entrance switch testing circuit；9、
Outlet switch testing circuit；10th, outputting circuit for relay；11st, storage circuit；12nd, RS485 communicating circuit.
Specific embodiment
Make this utility model with reference to Fig. 1, Fig. 2, Fig. 3.This AC distribution first cabinet of each row inlet wire and outlet monitoring modular, including
MCU central processing unit 1, voltage sample circuit 2, inlet wire measuring circuit 3, outlet measuring circuit 4, inlet wire current sample circuit 5,
Outlet current sampling circuit 6, service entrance switch testing circuit 8, outlet switch testing circuit 9, outputting circuit for relay 10, storage electricity
Road 11 and RS485 communicating circuit 12；It is defeated that the service entrance switch signal of main road is converted into level signal by service entrance switch testing circuit 8
Enter in MCU central processing unit 1, the outlet switch signal of branch road is converted into level signal input by outlet switch testing circuit 9
In MCU central processing unit 1；MCU central processing unit 1 exports the break-make of low and high level signal control relay output circuit 10；MCU
Central processing unit 1 will gather calculated data and store in real time in storage circuit 11；MCU central processing unit 1 passes through
RS485 communicating circuit 12 carries out data interaction with outside harvester or touch screen；Three-phase main road primary voltage signal respectively through
After each the voltage sample circuit 2 of adaptation is sampled, obtains three primary voltage sampled signals of A phase, B phase, C phase, enter respectively
Enter inlet wire measuring circuit 3；The main road inlet wire current that three-phase main road inlet wire produces after the outside transformer respectively through respective adaptation
Signal, then after respectively enteing the inlet wire current sample circuit 5 of respective adaptation, obtain three inlet wire current samplings of A phase, B phase, C phase
Signal, enters back into inlet wire measuring circuit 3；It is characterized in that：The main road primary voltage signal of wherein one phase is through voltage sampling electricity
After road 2 is sampled, arbitrarily can select a phase in three primary voltage signals of A phase, B phase, C phase, enter back into outlet measurement
The voltage measurement passage of circuit 4 carries out voltage signal process；The branch road that branch road outlet produces after outside transformer goes out line current
After signal enters outlet current sampling circuit 6, then conducting is selected to enter outlet measuring circuit 4 by analog switching circuit 7；Inlet wire
Measuring circuit 3 and outlet measuring circuit 4 enter MCU central processing unit 1 by spi bus and are processed.
Described branch road outlet is provided with 60 single-phase branch road outlets, each single-phase branch road outlet outside through respective adaptation respectively
The branch road outlet current signal producing after transformer, enters back into the outlet current sampling circuit 6 of respective adaptation, is so provided with 60 altogether
Individual outlet current sampling circuit 6, every 8 single-phase branch road outlets are one group, and remaining 4 single-phase branch road outlets are one group, so
It is provided with eight groups altogether, every group of single-phase branch road outlet is all correspondingly arranged an analog switching circuit 7 and an outlet measuring circuit 4；
Described outlet measuring circuit 4, including resistance, electric capacity and No. two chip U2, No. two chip U2 adopt CS5463, and two
The VIN+ pin of number chip U2 passes through ten No. eight resistance R18 and connects A phase primary voltage sampled signal anode Ua+, and VIN- pin is even
Meet A phase primary voltage sampled signal negative terminal Ua-, between VIN+ pin and VIN- pin, be in series with ten No. four electric capacity C14；No. two cores
The VREFOUT pin of piece U2 and VREFIN pin connect, and pass through ten No. eight electric capacity C18 and be digitally connected；No. two chip U2
VA- pin and IIN- pin is connected with simulation ground, VA+ pin and PFMON pin are connected by an electric capacity C1 and digitally,
VA+ pin and PFMON pin are connected with+5V power supply；The IIN+ pin of No. two chip U2 passes through No. ten electric capacity C10 and 19 respectively
Number resistance R19 is connected with simulation ground；The XOUT pin of No. two chip U2 is connected with XIN pin by crystal oscillator CY1；No. two chip U2
DGND pin be digitally connected；The VD+ pin of No. two chip U2 is connected with 3.3V positive source；
Described analog switching circuit 7, including resistance, electric capacity and No. three chip U3, No. three chip U3 adopt CD4051, and three
The OUT/IN pin of number chip U3 is connected with simulation ground, and the OUT/IN pin of No. three chip U3 passes through No. seven electric capacity C7 and simulation ground
Connect, VDD pin is connected with 3.3V positive source, and VEE pin is connected with -3.3V power supply, VSS pin is connected with simulation ground, INH
Pin is connected with digitally；The I0 pin of No. three chip U3, I1 pin, I2 pin, I3 pin, I4 pin, I5 pin, I6 pin
Connect with the outfan of each outlet current sampling circuit 6 of corresponding a group in eight groups of single-phase branch road outlets respectively with I7 pin
Connect, as shown in Figure 2, the I0 pin of No. three chip U3, I1 pin, I2 pin, I3 pin, I4 pin, I5 pin, I6 pin and
I7 pin respectively with first group of single-phase branch road outlet in the outfan IA1-1 of eight outlet current sampling circuits 6, IA1-2,
IA1-3, IA1-4, IA1-5, IA1-6, IA1-7, IA1-8 connect；Only four single-phase branch roads of 8th group of single-phase branch road outlet go out
Line, then the corresponding I0 pin of No. three chip U3 of the 8th group of single-phase branch road outlet, I1 pin, I2 pin and I3 pin respectively with
Outfan IA8-1, IA8-2, IA8-3, IA8-4 of four outlet current sampling circuits 6 in 8th group of single-phase branch road outlet is even
Connect；
Described MCU central processing unit 1 adopts LPC1763FBD100；The P2.3 pin of MCU central processing unit 1 and eight groups
The SCLK pin of eight corresponding No. two chip U2 of single-phase branch road outlet is connected；The P2.4 pin of MCU central processing unit 1 with
The SDO pin of eight corresponding No. two chip U2 of eight groups of single-phase branch road outlets is connected；The P2.6 of MCU central processing unit 1 draws
The RESET pin of the foot eight No. two chip U2s corresponding with eight groups of single-phase branch road outlets is connected；MCU central processing unit 1
The SDI pin of the P2.7 pin eight No. two chip U2s corresponding with eight groups of single-phase branch road outlets is connected；MCU central processing unit
The A pin of 1 P2.8 pin, the eight No. three chip U3s corresponding with eight groups of single-phase branch road outlets is connected；MCU central authorities are processed
The B pin of the P2.9 pin of the device 1 eight No. three chip U3s corresponding with eight groups of single-phase branch road outlets is connected；MCU centre
The C pin of the P0.16 pin of the reason device 1 eight No. three chip U3s corresponding with eight groups of single-phase branch road outlets is connected；MCU central authorities
The P2.5 pin of processor 1, P1.0 pin, P1.1 pin, P1.2 pin, P1.3 pin, P1.4 pin, P1.5 pin and P1.6
The CS pin of eight corresponding with eight groups of single-phase branch road outlets respectively No. two chip U2 of pin is connected, and such as MCU central authorities are processed
The CS pin of the P2.5 pin of the device 1 No. two chip U2s corresponding with first group of single-phase branch road outlet is connected, and MCU central authorities are processed
The CS pin of the P1.0 pin of the device 1 No. two chip U2s corresponding with second group of single-phase branch road outlet is connected, and so on, directly
CS pin to the P1.6 pin of the MCU central processing unit 1 No. two chip U2s corresponding with the 8th group of single-phase branch road outlet is connected
Connect；
As shown in figure 3, the P2.0 pin of MCU central processing unit 1, P2.1 pin, P2.2 pin respectively with RS485
Communicating circuit 12 exports, inputs, sequencing contro connects, for complete MCU central processing unit 1 pass through RS485 communicating circuit 12 with
Extraneous interaction；The P0.15 pin of MCU central processing unit 1 is connected with service entrance switch testing circuit 8 outfan, for processing
The service entrance switch signal that service entrance switch testing circuit 8 detects；The P1.23 pin of MCU central processing unit 1 is exported with relay
Circuit 10 input connects, for processing relay output signal；The P1.29 pin of MCU central processing unit 1, No. P0.0 draw
The data pins of foot, P0.1 pin and storage circuit 11, clock, write-protect pin are connected, and process for processing MCU central authorities
The data that device 1 needs are stored；The P2.11 pin of MCU central processing unit 1, P2.12 pin, P0.17 pin,
The reset pin of P0.18 pin, P0.19 pin and inlet wire measuring circuit 3, data input, data output, clock input with
And electric energy verification pin is connected, for processing inlet wire signal；The P0.23 pin of MCU central processing unit 1 is detected with outlet switch
The outfan of circuit 9 is connected, for processing the outlet switch signal that outlet switch testing circuit 9 detects.
Claims (2)
1. AC distribution first cabinet of each row inlet wire and outlet monitoring modular, including MCU central processing unit（1）, voltage sample circuit（2）、
Inlet wire measuring circuit（3）, outlet measuring circuit（4）, inlet wire current sample circuit（5）, outlet current sampling circuit（6）, inlet wire
Switch detection circuit（8）, outlet switch testing circuit（9）, outputting circuit for relay（10）, storage circuit（11）Lead to RS485
News circuit（12）；The service entrance switch signal of main road passes through service entrance switch testing circuit（8）It is converted into level signal input MCU central authorities
Processor（1）In, the outlet switch signal of branch road passes through outlet switch testing circuit（9）It is converted in level signal input MCU
Central processor（1）In；MCU central processing unit（1）Output low and high level signal control relay output circuit（10）Break-make；
MCU central processing unit（1）Calculated data will be gathered and store storage circuit in real time（11）In；MCU central processing unit
（1）By RS485 communicating circuit（12）Carry out data interaction with outside harvester or touch screen；Three-phase main road primary voltage signal
Voltage sample circuit respectively through respective adaptation（2）After being sampled, respectively enter inlet wire measuring circuit（3）；Three-phase main road
The main road inlet wire current signal that inlet wire produces after the outside transformer respectively through respective adaptation, then respectively enter respective adaptation
Inlet wire current sample circuit（5）Afterwards, enter back into inlet wire measuring circuit（3）；It is characterized in that：The main road primary voltage of wherein one phase
Signal is through voltage sample circuit（2）After being sampled, enter back into outlet measuring circuit（4）Voltage measurement passage carry out voltage
Signal processing；The branch road outlet current signal that branch road outlet produces after outside transformer enters outlet current sampling circuit（6）
Afterwards, then by analog switching circuit（7）Conducting is selected to enter outlet measuring circuit（4）；Inlet wire measuring circuit（3）And outlet measurement
Circuit（4）Enter MCU central processing unit by spi bus（1）Processed.
2. AC distribution first cabinet of each row inlet wire according to claim 1 and outlet monitoring modular it is characterised in that：Described branch road
Outlet is provided with 60 single-phase branch road outlets, and what each single-phase branch road outlet produced respectively after the respective outside transformer being adapted to props up
Road outlet current signal, enters back into the outlet current sampling circuit of respective adaptation（6）, every 8 single-phase branch road outlets are one group, surplus
4 remaining single-phase branch road outlets are one group, and every group of single-phase branch road outlet is all correspondingly arranged an analog switching circuit（7）With one
Outlet measuring circuit（4）；
Described outlet measuring circuit（4）, including resistance, electric capacity and No. two chips（U2）, No. two chips（U2）Using CS5463,
No. two chips（U2）VIN+ pin pass through ten No. eight resistance（R18）Connect A phase primary voltage sampled signal anode（Ua+）,
VIN- pin connects A phase primary voltage sampled signal negative terminal（Ua-）, between VIN+ pin and VIN- pin, it is in series with ten No. four electricity
Hold（C14）；No. two chips（U2）VREFOUT pin and VREFIN pin connect, and pass through ten No. eight electric capacity（C18）With numeral
Ground connects；No. two chips（U2）VA- pin and IIN- pin is connected with simulation ground, VA+ pin and PFMON pin are by No. one
Electric capacity（C1）Be digitally connected, VA+ pin and PFMON pin are connected with+5V power supply；No. two chips（U2）IIN+ pin divide
Tong Guo not No. ten electric capacity（C10）With ten No. nine resistance（R19）With simulation be connected；No. two chips（U2）XOUT pin pass through crystalline substance
Shake（CY1）It is connected with XIN pin；No. two chips（U2）DGND pin be digitally connected；No. two chips（U2）VD+ pin
It is connected with 3.3V positive source；
Described analog switching circuit（7）, including resistance, electric capacity and No. three chips（U3）, No. three chips（U3）Using CD4051,
No. three chips（U3）OUT/IN pin with simulation ground be connected, No. three chips（U3）OUT/IN pin pass through No. seven electric capacity（C7）
With simulation be connected, VDD pin is connected with 3.3V positive source, and VEE pin is connected with -3.3V power supply, VSS pin and simulate ground
Connect, INH pin is connected with digitally；No. three chips（U3）I0 pin, I1 pin, I2 pin, I3 pin, I4 pin, I5
Pin, I6 pin and I7 pin each outlet current sampling circuit with corresponding a group in eight groups of single-phase branch road outlets respectively
（6）Outfan connect；
Described MCU central processing unit（1）Using LPC1763FBD100；MCU central processing unit（1）P2.3 pin and eight groups
Eight corresponding No. two chips of single-phase branch road outlet（U2）SCLK pin be connected；MCU central processing unit（1）P2.4 draw
Foot eight No. two chips corresponding with eight groups of single-phase branch road outlets（U2）SDO pin be connected；MCU central processing unit（1）
P2.6 pin eight No. two chips corresponding with eight groups of single-phase branch road outlets（U2）RESET pin be connected；MCU central authorities
Processor（1）P2.7 pin eight No. two chips corresponding with eight groups of single-phase branch road outlets（U2）SDI pin be connected；
MCU central processing unit（1）P2.8 pin eight No. three chips corresponding with eight groups of single-phase branch road outlets（U3）A pin phase
Connect；MCU central processing unit（1）P2.9 pin eight No. three chips corresponding with eight groups of single-phase branch road outlets（U3）B
Pin is connected；MCU central processing unit（1）P0.16 pin eight No. three chips corresponding with eight groups of single-phase branch road outlets
（U3）C pin be connected；MCU central processing unit（1）P2.5 pin, P1.0 pin, P1.1 pin, P1.2 pin, P1.3
Eight corresponding with eight groups of single-phase branch road outlets respectively No. two chips of pin, P1.4 pin, P1.5 pin and P1.6 pin
（U2）CS pin be connected；
MCU central processing unit（1）P2.0 pin, P2.1 pin, P2.2 pin respectively with RS485 communicating circuit（12）
Output, input, sequencing contro connect；MCU central processing unit（1）P0.15 pin and service entrance switch testing circuit（8）Output
End connects；MCU central processing unit（1）P1.23 pin and outputting circuit for relay（10）Input connects；MCU centre
Reason device（1）P1.29 pin, P0.0 pin, P0.1 pin and storage circuit（11）Data pins, clock, write guarantor
Pillar foot is connected；MCU central processing unit（1）P2.11 pin, P2.12 pin, P0.17 pin, No. P0.18 draw
Foot, P0.19 pin and inlet wire measuring circuit（3）Reset pin, data input, data output, clock input and electric energy
Verification pin is connected；MCU central processing unit（1）P0.23 pin and outlet switch testing circuit（9）Outfan be connected
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620906836.2U CN205982497U (en) | 2016-08-22 | 2016-08-22 | AC distribution first cabinet inlet wire of row and monitoring module that is qualified for next round of competitions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620906836.2U CN205982497U (en) | 2016-08-22 | 2016-08-22 | AC distribution first cabinet inlet wire of row and monitoring module that is qualified for next round of competitions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205982497U true CN205982497U (en) | 2017-02-22 |
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|---|---|---|---|
| CN201620906836.2U Active CN205982497U (en) | 2016-08-22 | 2016-08-22 | AC distribution first cabinet inlet wire of row and monitoring module that is qualified for next round of competitions |
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| Country | Link |
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| CN112578319A (en) * | 2021-01-12 | 2021-03-30 | 国网山东省电力公司成武县供电公司 | Low-voltage distribution cabinet equipment line connection point monitoring alarm device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112578319A (en) * | 2021-01-12 | 2021-03-30 | 国网山东省电力公司成武县供电公司 | Low-voltage distribution cabinet equipment line connection point monitoring alarm device |
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