CN208721739U - Single-phase electric energy metering device with defencive function - Google Patents
Single-phase electric energy metering device with defencive function Download PDFInfo
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- CN208721739U CN208721739U CN201821436756.0U CN201821436756U CN208721739U CN 208721739 U CN208721739 U CN 208721739U CN 201821436756 U CN201821436756 U CN 201821436756U CN 208721739 U CN208721739 U CN 208721739U
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- electric energy
- microprocessor
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Abstract
Single-phase electric energy metering device with defencive function includes microprocessor module, current sampling module, voltage sample module, metering circuit, clock chip, memory, LCD MODULE, wireless communication module, key module, protection circuit, AC/DC power supply；Voltage sample wired in parallel is between firewire and zero curve, current sampling module is connected on firewire, voltage sample module is connected with the Vin of metering circuit mouth, and current sampling module is connected with the Iin of metering circuit mouth, and the output end of metering circuit is connected with the I/O of microprocessor module mouth；Clock chip, memory, LCD MODULE, wireless communication module, key module, protection circuit are connected with the I/O of microprocessor mouth respectively; it starts to exchange fire line input terminal one end of AC/DC power supply; another terminal connecting zero line, output end are connected with the power port of microprocessor module.The utility model can measure electric energy, can also play a protective role, and improve power supply reliability.
Description
Technical field
The utility model belongs to electric energy metering device technical field, and in particular to a kind of single-phase electric energy with defencive function
Metering device.
Background technique
It is commonly present the generation of voltage fluctuation, failure when in power grid, it is higher or relatively low to make the supply voltage of user, to damage
Evil electrical equipment, or since the electric power of user is too big, situations such as making route that aging occur, or even fire occur.
In addition, have various intelligent electric meters at present, register one's residence meter reading method and advanced charge meter reading side although solving tradition
Problem brought by the inconvenience of formula, but measurement power quality can be used and worked as when intelligent electric energy meter there are no one kind
Instrument uses, also with the electric energy metering device of reliably protecting function.
Summary of the invention
For the above-mentioned problems of the prior art and deficiency, the utility model provide it is a kind of can both measure electric energy, also
It can protect the single-phase electric energy metering device with defencive function of electrical appliance.
The technical solution that the utility model is taken is as follows:
Single-phase electric energy metering device with defencive function includes that microprocessor module, current sampling module, voltage are adopted
Egf block, metering circuit, clock chip, memory, LCD MODULE, wireless communication module, key module, protection circuit,
AC/DC power supply；Wherein, voltage sample wired in parallel is between firewire and zero curve, and current sampling module is connected on firewire, voltage
Sampling module is connected with the Vin of metering circuit mouth, and current sampling module is connected with the Iin of metering circuit mouth, metering circuit it is defeated
Outlet is connected with the I/O of microprocessor module mouth；Clock chip, memory, LCD MODULE, wireless communication module, key
Module, protection circuit are connected with the I/O of microprocessor mouth respectively, and input terminal one end of AC/DC power supply is started to exchange fire line, another to terminate zero
Line, output end are connected with the power port of microprocessor module；The clock chip is responsible for Dose times；The memory is for depositing
Store up energy data；The wireless communication module is responsible for transmitting energy data.
Voltage sample module described in the utility model is made of voltage transformer pt, first resistor R1, second resistance R2, electricity
, secondary side winding and second resistance in parallel with input ac voltage after the first side winding series connection first resistor R1 of pressure mutual inductor PT
R2 is in parallel, and secondary side winding one end ground connection after parallel connection, one end is connected with the end Vin of metering circuit.The current sampling module
It is made of Current Transmit, 3rd resistor R3, the first side winding series connection access exchange input side of Current Transmit is secondary
Side winding is in parallel with 3rd resistor R3, and secondary side winding one end ground connection after parallel connection, one end is connected with the end Iin of metering circuit.
The chip of the metering circuit is CS5460A.The key module is made of three keys, respectively "+", "-", " function choosing
It selects ".The protection circuit is by phototriode Q, the 4th resistance R4, the 5th resistance R5, relay coil KM, the normally closed touching of relay
Point KM composition；The end d1 of phototriode Q is connected with the I/O of microprocessor mouth, and the end d1 is connected with the 4th resistance R4, the 4th electricity
Hinder R4 other end ground connection；The collector c at the end d1 of phototriode Q connects power supply VCC, transmitter e and the 5th one end resistance R5 phase
Even, the 5th resistance R5 other end is connected with the one end relay coil KM, relay coil KM other end ground connection；Relay is normally closed
Contact KM is connected in the firewire of input terminal.
After the utility model is installed, by key module be arranged Current Voltage protect threshold value, voltage sample module and
Current sampling module samples input ac voltage electric current, and the value after sampling is transferred to metering circuit and is analyzed and processed, then is transmitted to
Microprocessor analysis processing；Effective value, electric flux are shown by LCD MODULE；And electric flux and time
Point is stored in memory, and the time is provided by clock chip；Then by wireless communication module electric energy data upload in
Electric energy summary center etc..If input voltage is higher than given threshold below or above given threshold or electric current, then microprocessor
A signal, which is exported, by I/O mouthfuls drives phototriode Q conducting, so that it is electric to obtain relay coil KM, the normally closed touching of relay
Point KM movement, cutting input, plays a protective role.
The utility model at least has the advantages that
(1) device can not only measure effective value, electric flux, can also measure power factor, idle function
Rate.
(2) the characteristics of having many advantages, such as small power consumption, small in size, light-weight, and meeting modularization and digitlization.
(3) also there are the defencive functions such as overcurrent, over-voltage, under-voltage simultaneously.
Detailed description of the invention
Fig. 1 is the operation principle schematic diagram of the utility model；
Fig. 2 is the functional structure schematic block diagram of the utility model；
In figure: 1- microprocessor, 2- voltage sample module, 3- current sampling module, 4- metering circuit, 5- clock chip,
6- memory, 7- LCD MODULE, 8- wireless communication module, 9- key module, 10- protect circuit, 11-AC/DC power supply.
Specific embodiment
With reference to the accompanying drawings and detailed description, the utility model is described in further detail.
Single-phase electric energy metering device as shown in Figure 1 and Figure 2 with defencive function, includes microprocessor module to be measured
1, current sampling module 3, voltage sample module 2, metering circuit 4, clock chip 5, memory 6, LCD MODULE 7, wireless
Communication module 8, key module 9, protection circuit 10, AC/DC power supply 11.Wherein, voltage sample wired in parallel is in firewire L and zero
Between line N, current sampling module is connected on firewire, and voltage sample module is connected with the Vin of metering circuit mouth, current sample mould
Block is connected with the Iin of metering circuit mouth, and the output end of metering circuit is connected with the I/O of microprocessor module mouth；Clock chip is deposited
Reservoir, LCD MODULE, wireless communication module, key module, protection circuit are connected with the I/O of microprocessor mouth respectively, AC/
Input terminal one end of DC power supply is started to exchange fire line, another terminal connecting zero line, and output end is connected with the power port of microprocessor module；When described
Clock chip is responsible for Dose times；The memory is for storing energy data；The wireless communication module is responsible for transmitting electric energy number
According to.The voltage sample module is made of voltage transformer pt, first resistor R1, second resistance R2, and the one of voltage transformer pt
In parallel with input ac voltage after secondary side windings in series first resistor R1, secondary side winding is in parallel with second resistance R2, after in parallel
Secondary side winding one end ground connection, one end is connected with the end Vin of metering circuit.The current sampling module is by current transformer
CT, 3rd resistor R3 are constituted, the first side winding series connection access exchange input side of Current Transmit, secondary side winding and third
Resistance R3 is in parallel, and secondary side winding one end ground connection after parallel connection, one end is connected with the end Iin of metering circuit.Described in the present embodiment
The chip of metering circuit is CS5460A.The key module is made of three keys, respectively "+", "-", " function selection ".
The protection circuit is by phototriode Q, the 4th resistance R4, the 5th resistance R5, relay coil KM, relay normally closed contact KM
Composition；The end d1 of phototriode Q is connected with the I/O of microprocessor mouth, and the end d1 is connected with the 4th resistance R4, and the 4th resistance R4 is another
One end ground connection；The collector c at the end d1 of phototriode Q meets power supply VCC, and transmitter e is connected with the 5th one end resistance R5, and the 5th
The resistance R5 other end is connected with the one end relay coil KM, relay coil KM other end ground connection；Relay normally closed contact KM string
It is associated in the firewire (L) of input terminal.
The application method of the utility model is as follows:
Step 1: installing the single-phase electric energy metering device with defencive function；
Step 2: electric current, voltage protection threshold value is arranged by key module 9 according to LCD MODULE 7；
Step 3: voltage sample module 2, current sampling module 3 sample input ac voltage electric current, the value transmission after sampling
It is analyzed to metering circuit 4, then is transmitted to 1 analysis of microprocessor processing；Obtain input voltage and input current virtual value, output voltage electricity
Virtual value, electric flux etc. are flowed, is then shown in LCD MODULE 7；
Step 4: electric flux and time point are stored in memory 6, the time is provided by clock chip 5；Then pass through
Wireless communication module 8 uploads electric energy data in electric energy summary center；
Step 5: if input voltage is higher than given threshold below or above given threshold or electric current, then microprocessor
1, which exports a signal by I/O mouthfuls, drives phototriode Q conducting, so that it is electric to obtain relay coil KM, the normally closed touching of relay
Point KM movement, cutting input, plays a protective role.
Claims (6)
1. with defencive function single-phase electric energy metering device, it is characterised in that: the device include microprocessor module (1),
Current sampling module (3), voltage sample module (2), metering circuit (4), clock chip (5), memory (6), liquid crystal display mode
Block (7), wireless communication module (8), key module (9), protection circuit (10), AC/DC power supply (11)；Wherein, voltage sample mould
Block is connected in parallel between firewire (L) and zero curve (N), and current sampling module is connected on firewire, voltage sample module and metering circuit
Vin mouth be connected, current sampling module is connected with the Iin of metering circuit mouth, the output end and microprocessor module of metering circuit
I/O mouth be connected；Clock chip, memory, LCD MODULE, wireless communication module, key module, protection circuit respectively with
The I/O mouth of microprocessor is connected, and input terminal one end of AC/DC power supply is started to exchange fire line, another terminal connecting zero line, output end and microprocessor
The power port of module is connected；The clock chip is responsible for Dose times；The memory is for storing energy data；It is described wireless
Communication module is responsible for transmitting energy data.
2. the single-phase electric energy metering device according to claim 1 with defencive function, it is characterised in that: the voltage is adopted
Egf block is made of voltage transformer pt, first resistor R1, second resistance R2, the first side winding of voltage transformer pt series connection the
In parallel with input ac voltage after one resistance R1, secondary side winding is in parallel with second resistance R2, the secondary side winding one after parallel connection
End ground connection, one end is connected with the end Vin of metering circuit.
3. the single-phase electric energy metering device according to claim 1 with defencive function, it is characterised in that: the electric current is adopted
Egf block is made of Current Transmit, 3rd resistor R3, the first side winding series connection access exchange input of Current Transmit
Side, secondary side winding is in parallel with 3rd resistor R3, secondary side winding one end ground connection after parallel connection, the Iin of one end and metering circuit
End is connected.
4. the single-phase electric energy metering device according to claim 1 with defencive function, it is characterised in that: the metering electricity
The chip on road is CS5460A.
5. the single-phase electric energy metering device according to claim 1 with defencive function, it is characterised in that: the key mould
Block is made of three keys, respectively "+", "-", " function selection ".
6. the single-phase electric energy metering device according to claim 1 with defencive function, it is characterised in that: the protection electricity
Route phototriode Q, the 4th resistance R4, the 5th resistance R5, relay coil KM, relay normally closed contact KM composition；Photoelectricity
The end d1 of triode Q is connected with the I/O of microprocessor mouth, and the end d1 is connected with the 4th resistance R4, the 4th resistance R4 other end ground connection；
The collector c at the end d1 of phototriode Q meets power supply VCC, and transmitter e is connected with the 5th one end resistance R5, and the 5th resistance R5 is another
One end is connected with the one end relay coil KM, relay coil KM other end ground connection；Relay normally closed contact KM is connected on input
In the firewire (L) at end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821436756.0U CN208721739U (en) | 2018-09-03 | 2018-09-03 | Single-phase electric energy metering device with defencive function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821436756.0U CN208721739U (en) | 2018-09-03 | 2018-09-03 | Single-phase electric energy metering device with defencive function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208721739U true CN208721739U (en) | 2019-04-09 |
Family
ID=65980890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821436756.0U Expired - Fee Related CN208721739U (en) | 2018-09-03 | 2018-09-03 | Single-phase electric energy metering device with defencive function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208721739U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441595A (en) * | 2019-04-23 | 2019-11-12 | 浙江八达电子仪表有限公司 | Three-phase intelligent electric-energy meter based on AC-DC high frequency conversion power supply |
| CN110687348A (en) * | 2019-10-29 | 2020-01-14 | 四川长虹电器股份有限公司 | Electric energy metering device and electric energy metering method |
-
2018
- 2018-09-03 CN CN201821436756.0U patent/CN208721739U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441595A (en) * | 2019-04-23 | 2019-11-12 | 浙江八达电子仪表有限公司 | Three-phase intelligent electric-energy meter based on AC-DC high frequency conversion power supply |
| CN110687348A (en) * | 2019-10-29 | 2020-01-14 | 四川长虹电器股份有限公司 | Electric energy metering device and electric energy metering method |
| CN110687348B (en) * | 2019-10-29 | 2021-04-27 | 四川长虹电器股份有限公司 | Electric energy metering device and electric energy metering method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190409 Termination date: 20190903 |