CN206756946U - A kind of jack box multi-way intelligence electrical parameter measuring instrument - Google Patents
A kind of jack box multi-way intelligence electrical parameter measuring instrument Download PDFInfo
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- CN206756946U CN206756946U CN201720099580.3U CN201720099580U CN206756946U CN 206756946 U CN206756946 U CN 206756946U CN 201720099580 U CN201720099580 U CN 201720099580U CN 206756946 U CN206756946 U CN 206756946U
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Abstract
The utility model discloses a kind of jack box multi-way intelligence electrical parameter measuring instrument, the voltage sampling circuit being connected including processor and respectively with processor, current sampling circuit, on off state Acquisition Circuit, Switching Power Supply, communication interface and data storage, also include 3 voltage transformers, primary coil of 3 voltage transformers A phases with power network respectively, B phases connect with C phase phase voltages, secondary coil connects voltage sampling circuit, power network A phases, B phases are held with C phases and have been also respectively connected with several switches, the other end of several switches is correspondingly connected with current transformer, the primary side of current transformer connects the on off state Acquisition Circuit.The utility model can realize multichannel measurement, using the form of external current mutual inductor special, multichannel input is measured respectively, on off state measurement judges that the pattern of on off state is monitored using outlet alternating voltage, the accuracy of measurement is not only increased, also saves the space of jack box.
Description
Technical field
Low-voltage distribution jack box field of measuring technique is the utility model is related to, more particularly to a kind of jack box multi-way intelligence electricity
Parameter measurement instrument.
Background technology
Jack box is the use electronic box of low-voltage distribution field very little, and it is the equipment for distribution tap, small volume, is designed empty
Between it is compact, be normally applied only in case install corresponding to switch, electricity and status monitoring will not be done.But with data
The growth requirement of the accurate distribution such as the heart, Bank Building, stock building to each loop, it is necessary to carry out electric parameter measurement, to distribution
Failure makes analysis and statistics.Low voltage distribution monitoring currently used for multichannel is all the pattern for taking more devices, that is, voltage,
Electric current, on off state distinguish three kinds of modules, and it is more that this pattern has a module number, and cost is high, and wiring is complicated, failure ratio relatively frequency
It is numerous, and electric degree function can not be completed, it can not be used at all in jack box.
Utility model content
Based on the deficiencies in the prior art, the purpose of this utility model is to provide a kind of jack box multi-way intelligence electric parameter measurement
Instrument, realize multichannel measurement and variable connector state measurement, while simplified design structure, saving space, raising antijamming capability.
To achieve the above object, the technical solution of the utility model is：
A kind of jack box multi-way intelligence electrical parameter measuring instrument, including processor（1）And respectively with the processor（1）Connection
Voltage sampling circuit（2）, current sampling circuit (3), on off state Acquisition Circuit（4）, Switching Power Supply (5), communication interface（6）
With data storage (7), in addition to 3 voltage transformers（8）, 3 voltage transformers（8）Primary coil respectively with electricity
A phases, the B phases of net connect with C phase phase voltages, and secondary coil connects the voltage sampling circuit (2), power network A phases, B phases and the C phases
End has been also respectively connected with several switches (9), and the other end of several switches is correspondingly connected with current transformer (10), institute
The primary side for stating current transformer (10) connects the on off state Acquisition Circuit（4）.
Preferably, several described switches（9）Quantity be 9, corresponding, the current transformer（10）Quantity be
9.
Preferably, the processor (1) is STM32ARM processors.
Preferably, the communication interface (6) is RS485 communication interfaces.
The beneficial effects of the utility model are：The utility model can realize multichannel measurement, mutual using external special electric current
The form of sensor, multichannel input is measured respectively, on off state measurement judges the pattern of on off state using outlet alternating voltage
It is monitored, not only increases the accuracy of measurement, also saves the space of jack box；
The STM32ARM processors of use, peripheral components are using space less, is saved, and measurement accuracy is good, antijamming capability
By force.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model specific embodiment.
Embodiment
Design, concrete structure and caused technique effect of the present utility model are carried out below with reference to embodiment and accompanying drawing
Clearly and completely describe, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment
It is part of the embodiment of the present utility model, rather than whole embodiments, based on embodiment of the present utility model, the skill of this area
The other embodiment that art personnel are obtained on the premise of not paying creative work, belong to the model of the utility model protection
Enclose.
A kind of jack box multi-way intelligence electrical parameter measuring instrument, including STM32ARM processors 1 and respectively with STM32ARM
Voltage sampling circuit 2, current sampling circuit 3, on off state Acquisition Circuit 4, Switching Power Supply 5, RS485 that device 1 connects is managed to communicate
Interface 6 and data storage 7, include primary coil A with power network respectively of 3 voltage transformers, 8,3 voltage transformers 8
Phase, B phases connect with C phase phase voltages, and secondary coil connection voltage sampling circuit 2, power network A phases, B phases are held with C phases has been also respectively connected with 9
The other end of individual 9,9 switches of switch is correspondingly connected with current transformer 10, the primary side connecting valve shape of current transformer 10
State Acquisition Circuit 4.The quantity of current transformer is 9.
The present embodiment multi-way intelligence electrical parameter measuring instrument isolation 9 road current effective values of collection and three-phase voltage phase voltage are effective
Value, the multinomial parameters of electric power such as the power in each loop, power factor, electric degree, interim electric degree are calculated according to corresponding relation
For cumulative calculation and store, data have a ferroelectricity chip, and power down persistence is without battery, and multi-way intelligence parameter measurement instrument is by number
According to being handled, and data are sent by communication interface, while also receive the standard modbus-rtu associations of communication interface
The order of view.
A special acquisition module, the center pitch of holes of transformer are designed for jack box in the part of current sampling circuit 3
For the spacing of miniature circuit breakers so that load line can be formed directly into transformer, and then the secondary current output of transformer is mA levels
Signal, so a measuring resistance is only needed to add amplifier signal processing circuit into the current sampling circuit of core controller.
Discharge circuit uses the technical grade amplifier of low drift, and signal stabilization measurement accuracy is accurate.
The part of voltage sampling circuit 2 is that special isolation voltage samples transformer, on the wiring board of measuring instrument.Voltage
Sample circuit is changed into mV signals by isolated voltage transformer, enters STM32ARM after then carrying out signal transacting by amplifier
The A/D convertor circuit of processor 1.
The state acquisition circuit that opens the light is using high-power resistance partial pressure and filters, and then enters by optical coupling isolation circuit
STM32ARM processors 1 are gathered, and the program of the design specialized of STM32ARM processors 1 is handled to judge on off state.
Communication interface is communicated using RS485, and communication uses light-coupled isolation, and isolation voltage grade reaches 2KV.
STM32ARM processors 1 are core processor, and STM32ARM processors are responsible for the analog-to-digital conversion of gathered data, data
Statistics calculating, data storage, data transfer communication；Core processor as measuring instrument center, by the switch of doubleway output
Power supply is powered, and Switching Power Supply uses the design of Width funtion input, without interference with the work of processor during low-voltage circuit voltage pulsation,
Two-way 5V is exported, and supplies the work of STM32ARM processors all the way, supplies communicating circuit work all the way.
The present embodiment realizes multichannel measurement, and product uses the pattern of external Special mutual-inductor module in design.One
Jack box is up to the output of 9 tunnels, the output of this 9 tunnel is measured respectively, parameter measurement is accurate, and the load of electric current is according to reality
Border load rating value is optional.
The utility model realizes variable connector state measurement, employs the pattern that outlet alternating voltage judges on off state
Monitoring, solves the switch spaces compact of jack box with can not increasing auxiliary contact shortcoming, that is, accomplishes accurate monitoring power distribution reality again
Show real-time monitoring switch state,.
The present embodiment small volume, using ST ARM7 processors, in the hardware design of product, peripheral components are enough lacks, and saves
About space, product is stable, strong antijamming capability.
It should be noted that simply preferred embodiment of the present utility model described above, the utility model not office
It is limited to above-mentioned embodiment, as long as it reaches technique effect of the present utility model with identical means, it is new should all belongs to this practicality
The protection domain of type.
Claims (4)
- A kind of 1. jack box multi-way intelligence electrical parameter measuring instrument, it is characterised in that：Including processor（1）And respectively with the processing Device（1）The voltage sampling circuit of connection（2）, current sampling circuit (3), on off state Acquisition Circuit（4）, it is Switching Power Supply (5), logical Communication interface（6）With data storage (7), in addition to 3 voltage transformers（8）, 3 voltage transformers（8）Primary coil The A phases with power network, B phases and C phase phase voltages are connected respectively, the secondary coil connection voltage sampling circuit (2), the power network A phases, B phases are held with C phases has been also respectively connected with several switches (9), and the other end of several switches is correspondingly connected with Current Mutual Inductance Device (10), the primary side of the current transformer (10) connect the on off state Acquisition Circuit（4）.
- 2. jack box multi-way intelligence electrical parameter measuring instrument as claimed in claim 1, it is characterised in that：Several described switches (9) quantity is 9, corresponding, and the quantity of the current transformer (10) is 9.
- 3. jack box multi-way intelligence electrical parameter measuring instrument as claimed in claim 1, it is characterised in that：The processor (1) is STM32ARM processors.
- 4. jack box multi-way intelligence electrical parameter measuring instrument as claimed in claim 1, it is characterised in that：The communication interface (6) For RS485 communication interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720099580.3U CN206756946U (en) | 2017-01-23 | 2017-01-23 | A kind of jack box multi-way intelligence electrical parameter measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720099580.3U CN206756946U (en) | 2017-01-23 | 2017-01-23 | A kind of jack box multi-way intelligence electrical parameter measuring instrument |
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| Publication Number | Publication Date |
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| CN206756946U true CN206756946U (en) | 2017-12-15 |
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| CN201720099580.3U Active CN206756946U (en) | 2017-01-23 | 2017-01-23 | A kind of jack box multi-way intelligence electrical parameter measuring instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689123A (en) * | 2022-04-14 | 2022-07-01 | 孙建欣 | Data acquisition unit of socket box intelligent monitoring system |
-
2017
- 2017-01-23 CN CN201720099580.3U patent/CN206756946U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689123A (en) * | 2022-04-14 | 2022-07-01 | 孙建欣 | Data acquisition unit of socket box intelligent monitoring system |
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