CN104181385B - The electric energy detection method and electric energy detection device of air conditioner - Google Patents
The electric energy detection method and electric energy detection device of air conditioner Download PDFInfo
- Publication number
- CN104181385B CN104181385B CN201310200460.4A CN201310200460A CN104181385B CN 104181385 B CN104181385 B CN 104181385B CN 201310200460 A CN201310200460 A CN 201310200460A CN 104181385 B CN104181385 B CN 104181385B
- Authority
- CN
- China
- Prior art keywords
- current
- mrow
- air conditioner
- amplifier
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of electric energy detection device of air conditioner, it includes：Voltage sample module, for the input AC electricity of air conditioner is sampled with obtain input AC electricity instantaneous voltage；Current sample module, for the input AC electricity of air conditioner is sampled with obtain input AC electricity current instantaneous value；Controller module, controller module are connected with voltage sample module and current sample module, and energy information of the air conditioner in preset time period is calculated according to the current instantaneous value of the instantaneous voltage of input AC electricity and input AC electricity；Power module, the output direct current for input AC electricity to be converted to preset voltage value think voltage sample module, current sample module and controller module power supply.The electric energy detection device only need to increase voltage sample module on former air-conditioning circuit and current sample module can realizes the electric energy detection of air conditioner, greatly reduces cost.The invention also discloses a kind of electric energy detection method of air conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field, the electric energy detection device of more particularly to a kind of air conditioner and the electricity of air conditioner
Can detection method.
Background technology
With the continuous improvement of energy prices, the energy consumption of air-conditioning has been to be concerned by more and more people, and each air-conditioning producer all exists
Strengthen the research of air conditioning electricity management aspect.At present, the other air-conditioning products band electric energy measurement function of existing of in the market, mainly
Realized by way of increasing ammeter functional module.
In the prior art, there is a kind of air conditioner power control device 1000, as shown in figure 1, it installs and uses band on air-conditioning
Meter amount IC module is external power module, samples the information such as electric current, the voltage of complete machine, exports the realtime power etc. of complete machine
Information, and send information to air-conditioning main control MCU, air-conditioning main control MCU adjust air-conditioning by receiving, analyzing, responding these information
Operational factor, reach the purpose of energy-conservation.
But the technology has the following disadvantages：
1st, need special ammeter computation chip and power circuit, cost higher using external power module；
2nd, typically there are independent RC resistance-capacitance depressurization power circuits in external power module, the RC resistance-capacitance depressurization power circuits
Reliability it is low；
3rd, external electric energy module volume is larger, to ensure enough electric clearances during design, and structure mounting design is complicated,
It is unfavorable for being attached in air conditioner, especially in the split air conditioner of small volume.
Also, because main control MCU is typically all using the Switching Power Supply isolated in air conditioning chamber, it is difficult to gather the voltage of complete machine
And current signal, and indoor main control MCU is controlled using 8 MCU, and the operational capability of chip is inadequate, can not effectively detect whole
Machine information about power.
In addition, the method for estimated current detection is：Current transformer, the effect of current transformer are used in sample circuit
The larger primary current of numerical value is converted to the less secondary current of numerical value by certain no-load voltage ratio, secondary current access resistance is born
Carry, current signal is converted to voltage signal.Chip Microcomputer A/D sampling pin carries out AD samplings to the voltage in real time.Because electric current is mutual
Sensor will be born up to more than 20A electric current when air-conditioning is maximum to be run, and the electric current of air-conditioning normal operation is also A levels.Passing through one
In the case that primary current is larger, the secondary current electric current of output is larger, and the voltage accuracy on Chip Microcomputer A/D sampling pin is higher；But
In the case of less by primary current (such as air-conditioning is in air supply pattern operation etc.), the secondary current of output is smaller, single
Voltage change on piece machine AD sampling pins is smaller, if single-chip microcomputer samples electricity when air-conditioning low current is run by this mode
Stream carries out electricity computing, and as a result often error is larger.
The content of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency.
Therefore, it is an object of the present invention to propose a kind of electric energy detection device of air conditioner, only need to be in former air conditioner electric
Increase voltage sample module on road and current sample module can realizes the electric energy detection of air conditioner, greatly reduce cost.
It is another object of the present invention to a kind of electric energy detection method for proposing air conditioner.
To reach above-mentioned purpose, a kind of electric energy detection device for air conditioner that one aspect of the present invention embodiment proposes, including：
Voltage sample module, for being sampled to the input AC electricity of air conditioner to obtain the voltage transient of input AC electricity
Value；Current sample module, for being sampled to the input AC electricity of the air conditioner to obtain the electricity of input AC electricity
Flow instantaneous value；Controller module, the controller module are connected with the voltage sample module and current sample module, the control
Device module processed calculates the sky according to the instantaneous voltage of input AC electricity and the current instantaneous value of input AC electricity
Adjust energy information of the device in preset time period；And power module, for the input AC electricity to be converted into predeterminated voltage
The output direct current of value, and be the voltage sample module, the current sample module and described by the output direct current
Controller module is powered.
The electric energy detection device of air conditioner according to embodiments of the present invention, it only need to increase voltage on original air-conditioning circuit and adopt
Egf block and current sample module, it is not necessary to extra power supply and control chip, using the stronger performance of controller module and firmly
Part characteristic can realizes the electric energy detection to air conditioner, and the Energy Saving Control to air conditioner is realized by the energy information of detection,
Therefore the area of electric-controlled plate is reduced, greatly reduces the cost of system, and also improve the reliability of system.
In one embodiment of the invention, the current sample module includes：Current transformer, the current transformer
The input AC of primary coil and the air conditioner be electrically connected；First resistor, it is mutual that the first resistor is connected in parallel on the electric current
The both ends of the secondary coil of sensor；First amplifier, in-phase input end and the current transformer of first amplifier
The positive terminal of secondary coil is connected, and the inverting input of first amplifier is connected with the output end of first amplifier,
The output end of first amplifier is connected with the first current detecting end of the controller module；Second resistance, described second
One end of resistance is respectively connected with the inverting input of first amplifier and the output end of first amplifier, and described
The other end ground connection of two resistance；Second amplifier, the in-phase input end of second amplifier are defeated with the preset voltage value
Go out direct current to be electrically connected, the inverting input of second amplifier be connected with the output end of second amplifier after with the electricity
The negative pole end of the secondary coil of current transformer is connected；3rd amplifier, the in-phase input end of the 3rd amplifier and described the
The output end of one amplifier is connected, and the inverting input of the 3rd amplifier is connected with the output end of second amplifier,
The output end of 3rd amplifier is connected with the second current detecting end of the controller module；3rd resistor, the described 3rd
One end of resistance is connected with the inverting input of the 3rd amplifier, the other end of the 3rd resistor and the described 3rd amplification
The output end of device is connected.
Also, the current sample module also includes the first capacitance-resistance filter unit, the first capacitance-resistance filter unit connection
Between the positive terminal of the secondary coil of the current transformer and the in-phase input end of first amplifier.
In one embodiment of the invention, the controller module is according to the first current detecting end and described second
Current detecting end obtains the current instantaneous value of the current sample module samples respectively, and is passing through the second current detecting end
Obtained when the current instantaneous value of acquisition is less than preset value according to the instantaneous voltage and by the second current detecting end
Current instantaneous value calculates energy information of the air conditioner in preset time period.
In one embodiment of the invention, the voltage sample module includes：Rectifier bridge, the input of the rectifier bridge
It is electrically connected with the input AC of the air conditioner；4th resistance, one end of the 4th resistance and the positive output of the rectifier bridge
End is connected；5th resistance, one end of the 5th resistance are connected with the other end of the 4th resistance, the 5th resistance it is another
The negative output terminal of one end and the rectifier bridge and be respectively connected with；Bilateral diode, the first end of the bilateral diode and
Two ends are connected after being connected with the other end of the 5th resistance, the 3rd end ground connection of the bilateral diode, two-way two pole
4th end of pipe and the output direct current of the preset voltage value are electrically connected；Form the 6th resistance and of the second capacitance-resistance filter unit
One electric capacity, one end of the 6th resistance are connected with the other end of the 5th resistance, the other end of the 6th resistance and institute
The one end for stating the first electric capacity is connected, the other end ground connection of first electric capacity, the section between the 6th resistance and the first electric capacity
Point is connected with the voltage detecting end of the controller module.
Specifically, in the example of the present invention, the power module is non-isolation type Switching Power Supply.
In one embodiment of the invention, the energy information includes voltage effective value, current effective value, wattful power
Rate, apparent energy and power factor.
Wherein, the controller module calculates the voltage effective value in the preset time period according to below equation：
Wherein, V is the voltage effective value, and n is the number sampled in the preset time period, and n is more than or equal to 1
Integer, v（k）For the instantaneous voltage.
The controller module calculates the current effective value in the preset time period according to below equation：
Wherein, I is the voltage effective value, i（k）For the current instantaneous value.
The controller module calculates the active power in the preset time period according to below equation：
Wherein, PjFor the active power.
To reach above-mentioned purpose, a kind of electric energy detection method for air conditioner that another aspect of the present invention embodiment proposes, bag
Include following steps：Voltage sample module is sampled to the input AC electricity of air conditioner to obtain the voltage of the input AC electricity
Instantaneous value；Current sample module is sampled to the input AC electricity of the air conditioner to obtain the electric current of the input AC electricity
Instantaneous value；And controller module is instantaneous according to the instantaneous voltage of input AC electricity and the electric current of input AC electricity
Value calculates energy information of the air conditioner in preset time period.
The electric energy detection method of air conditioner according to embodiments of the present invention, utilize the stronger performance of controller module and hardware
Characteristic can realizes the electric energy detection to air conditioner, and the Energy Saving Control to air conditioner is realized by the energy information of detection, from
And realize and be realized with a low cost electric energy detection, and accuracy of detection is high, and reliability is high.
In one embodiment of the invention, the electric energy detection method of described air conditioner also includes：The current sample
Module is sampled to the input AC electricity of the air conditioner obtains the first current instantaneous value and the second current instantaneous value respectively；Institute
State controller module and judge whether second current instantaneous value is less than preset value；If it is, the controller module is according to institute
State the second current instantaneous value and the instantaneous voltage calculates energy information of the air conditioner in preset time period.
When the second current instantaneous value detected is less than preset value, according to the second current instantaneous value and instantaneous voltage meter
Energy information is calculated, substantially increases the degree of accuracy of electric energy detection.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is a kind of schematic diagram of air conditioner power control device of prior art；
Fig. 2 is the block diagram according to the electric energy detection device of the air conditioner of the embodiment of the present invention；
Fig. 3 A- Fig. 3 D are to be illustrated according to the decomposition circuit of the electric energy detection device of the air conditioner of one embodiment of the invention
Figure；
Fig. 4 and Fig. 5 is the oscillogram of two kinds of voltage samples；And
Fig. 6 is the flow chart according to the electric energy detection method of the air conditioner of the embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.For letter
Change disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only example, and
Purpose does not lie in the limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is the relation between itself not indicating discussed various embodiments and/or setting for purposes of simplicity and clarity again.This
Outside, the invention provides various specific techniques and material examples, but those of ordinary skill in the art can be appreciated that
The applicable property of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it
" on " structure can include the first and second features and be formed as the embodiment that directly contacts, other feature shape can also be included
Into the embodiment between the first and second features, such first and second feature may not be direct contact.
In the description of the invention, it is necessary to explanation, unless otherwise prescribed and limit, term " installation ", " connected ",
" connection " should be interpreted broadly, for example, it may be mechanical connection or electrical connection or the connection of two element internals, can
To be to be joined directly together, can also be indirectly connected by intermediary, for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
With reference to following description and accompanying drawing, it will be clear that these and other aspects of embodiments of the invention.In these descriptions
In accompanying drawing, some particular implementations in embodiments of the invention are specifically disclosed, to represent to implement the implementation of the present invention
Some modes of the principle of example, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, the present invention
Embodiment includes all changes, modification and the equivalent fallen into the range of the spirit and intension of attached claims.
The electric energy detection device and air conditioner of the air conditioner of proposition of the embodiment of the present invention described with reference to the accompanying drawings
Electric energy detection method.
Fig. 2 is the block diagram according to the electric energy detection device of the air conditioner of the embodiment of the present invention.As shown in Fig. 2 should
The electric energy detection device of air conditioner includes voltage sample module 10, current sample module 20, controller module 30 and power module
40。
Wherein, voltage sample module 10 is used for the input AC electricity to air conditioner（L、N）Sampled and handed over obtaining input
The instantaneous voltage of electricity is flowed, current sample module 20 is used for the input AC electricity to air conditioner（L、N）Sampled to obtain
State the current instantaneous value of input AC electricity.Controller module 30 is connected with voltage sample module 10 and current sample module 20, control
Device module 30 processed is according to calculating the instantaneous voltage of input AC electricity and the current instantaneous value of input AC electricity
Energy information of the air conditioner in preset time period.Power module 40 is used for input AC electricity（L、N）Be converted to predeterminated voltage
It is worth such as+5V/+3.3V output direct current, and is voltage sample module 10, current sample module 20 by the output direct current
Powered with controller module 30.
In addition, as shown in Fig. 2 controller module 30 also with protection module 50, communication control module 60, compressor control mould
Block 70, wind-guiding control module 80, fan control module 90 and temperature sampling module 100 are respectively connected with.
In one embodiment of the invention, as shown in Fig. 2 or Fig. 3 A, power module 40 is non-isolation type Switching Power Supply,
The physical circuit of non-isolation type Switching Power Supply is as shown in Figure 3A.It is sky that the non-isolation type Switching Power Supply, which is used for controller module 30,
Main control MCU is adjusted to provide non-isolated+5V/+3.3V operating voltages.
Wherein, 30 integrated embedded Flash of controller module and the ARMCortex-M3 kernels of SRAM memory.With 8/16
Position equipment is compared, and ARM Cortex-M332 positions risc processor provides higher code efficiency.The highest of controller module 30
Working frequency is 72MHz, 1.25DMIPS/MHz, has the computing function of monocycle multiplication and hardware division.And controller mould
Block 30 possesses the A/D converter of the us levels of 2 12（16 passages）, its A/D measurement range is 0-3.6V, has double sampled and protects
Hold ability.
Therefore, the controller module 30 of the embodiment of the present invention has stronger performance and ardware feature, especially has height
The calculating disposal ability of speed, its physical circuit is as shown in Figure 3 B.
In one embodiment of the invention, as shown in Figure 3 C, current sample module 20 includes current transformer T1, first
Resistance R1, the first amplifier U1A, second resistance R2, the second amplifier U1B, the 3rd amplifier U1C and 3rd resistor R3.Wherein,
Current transformer T1 primary coil and the input AC of air conditioner are electrically connected, and first resistor R1 is connected in parallel on current transformer T1's
The both ends of secondary coil.First amplifier U1A in-phase input end is connected with the positive terminal of current transformer T1 secondary coil,
First amplifier U1A inverting input is connected with the first amplifier U1A output end, the first amplifier U1A output end with
First current detecting end AC_Current of controller module 30 is connected.Second resistance R2 one end is with the first amplifier U1A's
Inverting input and the first amplifier U1A output end are respectively connected with, second resistance R2 other end ground connection.Second amplifier
U1B in-phase input end is electrically connected by the output direct current of resistance and preset voltage value such as 5V, and the second amplifier U1B's is anti-phase
Input is connected after being connected with the second amplifier U1B output end with the negative pole end of current transformer T1 secondary coil.3rd
Amplifier U1C in-phase input end is connected with the first amplifier U1A output end, the 3rd amplifier U1C inverting input warp
The output end that resistance is crossed with the second amplifier U1B is connected, the 3rd amplifier U1C output end and the second electricity of controller module 30
Stream test side Sandby is connected.3rd resistor R3 one end is connected with the 3rd amplifier U1C inverting input, 3rd resistor R3
The other end be connected with the 3rd amplifier U1C output end.
Also, current sample module 20 also includes the first capacitance-resistance filter unit 201, the first capacitance-resistance filter unit 201 connects
Between the positive terminal of current transformer T1 secondary coil and the first amplifier U1A in-phase input end.Wherein, Current Mutual Inductance
Device T1 can be isolated form high precision current transformer.
That is, current sample module 20 is that the high current of input is converted into low current using current transformer T1 to believe
Number, current transformer T1 output meets the i.e. first resistor R1 of a rated resistance as load, and low current signal is converted into electricity
Signal is pressed, improves the reference voltage of the negative pole end of current transformer T1 outputs, ensures the positive terminal letter of current transformer T1 outputs
Number.The positive pole of T1 outputs terminates the first amplifier U1A in-phase input end, and the first amplifier U1A is as voltage follower, and first
It is conventional current detection signal that amplifier U1A output end, which exports the first current detection signal, is output to controller module 30
First current detecting end AC_Current（AD detection mouths）.First amplifier U1A output end is also outputted to the 3rd amplifier U1C
In-phase input end, it is low current detection signal that the 3rd amplifier U1C output end, which exports the second current detection signal, is output to
Second current detecting end Sandby of controller module 30（AD detection mouths）.
Because the changed power scope of air conditioner operation is larger, traditional electricity quantity module is using conventional electric resistance partial pressure sampling electricity
The method of signal is flowed, under low current running status, sampled data has relatively large deviation, causes to examine under low current running status
The electric quantity data of survey is inaccurate.Therefore the current detecting sampling of the embodiment of the present invention is realized by multistage operations amplifying circuit, greatly
The big degree of accuracy for improving current detecting.
As shown in Figure 3 D, voltage sample module 10 includes rectifier bridge 101, the 4th resistance R4, the 5th resistance R5, two-way two pole
Pipe D1, the 6th resistance R6 and the first electric capacity C1.Wherein, the input of rectifier bridge 101（2、3）With the input AC electricity of air conditioner
（L、N）It is connected, the 4th resistance R4 one end is connected with the positive output end 1 of rectifier bridge 101, the 5th resistance R5 one end and the 4th electricity
The resistance R4 other end is connected, the 5th resistance R5 other end and the negative output terminal 4 of rectifier bridge 101 and be respectively connected with.Two-way two
Pole pipe D1 first end and the second end are connected after being connected with the 5th resistance R5 other end, bilateral diode D1 the 3rd termination
Ground, bilateral diode D1 the 4th end and preset voltage value such as 5V output direct current are electrically connected.
6th resistance R6 and the first electric capacity C1 forms the second capacitance-resistance filter unit 102, the 6th resistance R6 one end and the 5th
The resistance R5 other end is connected, and the 6th resistance R6 other end is connected with the first electric capacity C1 one end, and the first electric capacity C1's is another
End ground connection, the voltage detecting end Udc_Input phases of node and controller module 30 between the 6th resistance R6 and the first electric capacity C1
Even.
That is, voltage sample module 10 by rectifier bridge 101 exporting direct current after the ac voltage rectifier of input
Pressure, the negative pole of the DC voltage after rectification and the power supply of controller module 20 altogether, after electric resistance partial pressure, resistance-capacitance circuit filtering
It is output to the voltage detecting end Udc_Input of controller module（AD detection mouths）, for being provided in real time to controller module 30
Voltage signal.Wherein, rectifier bridge 101 can be half-wave rectifying circuit or bridge rectifier.
In an embodiment of the present invention, controller module 30 is examined according to the first current detecting end and second electric current
The current instantaneous value that end obtains the sampling of current sample module 20 respectively is surveyed, and in the electricity obtained by the second current detecting end
Stream instantaneous value is less than instantaneous according to the instantaneous voltage and the electric current obtained by the second current detecting end during preset value
Value calculates energy information of the air conditioner in preset time period.In some embodiments of the invention, energy information can be with
Including voltage effective value, current effective value, active power, apparent energy and power factor.
Specifically, 30 each moment of controller module, sampled voltage signal, conventional current signal and low current were examined simultaneously
Survey signal.Controller module 30 carries out electricity calculating according to the running status of air conditioner with two current detecting data.It is for example, empty
When adjusting the running status of device to be opened for refrigeration compressor, because the running current of current air conditioner is big, then controller module 30 is counted
Electricity is calculated from conventional current detection sampled data.Under refrigeration mode when compressor is closed, the running current of air conditioner is small, then
Controller module 30 selects low current sampled data when calculating electricity, such as running state of air conditioner is air supply pattern, under this pattern
Compressor is closed mode, then controller module 30 calculates electricity from low current detection sampled data.Wherein, if low current
Detection data are less than preset value, and controller module 30 judges that air conditioner is in low power operation state, and controller module 30 calculates
Electricity is from low current detection sampled data.
When controller module 30 samples, in order to obtain high-precision voltage, electric current and power signal, controller module 30 needs
The 5K/ seconds are typically higher than by the instantaneous value of AD detection mouth high speed acquisition voltage and currents, sample frequency.
After instantaneous voltage and current instantaneous value is sampled, controller module 30 is effective according to below equation calculating voltage
Value：
Wherein, V is voltage effective value, and T is the sampling period, v（t）For instantaneous voltage.
In one embodiment of the invention, the waveform of voltage sample, by discrete sampling, calculates as shown in Fig. 4 or Fig. 5
Voltage effective value in the preset time period i.e. in sampling period signal, formula are：
Wherein, V is the voltage effective value, and n is the number sampled in the preset time period, and n is more than or equal to 1
Integer, v（k）For the instantaneous voltage.
In the specific example of the present invention, sampling period T=T2-T1, number n=100 of sampled point, then adopt in the cycle
The data of sample are as shown in table 1 below.
Table 1
| Sampled point | 1 | 2 | …… | 100 |
| Instantaneous voltage（V） | 330 | 325 | …… | 330 |
Sampled data is substituted into formula（2）It is calculated：
Also, controller module 30 is according to below equation calculating current virtual value：
Wherein, I is current effective value, and T is the sampling period, i（t）For current instantaneous value.
Similarly, by discrete sampling, the current effective value i.e. in sampling period signal in the preset time period is calculated,
Formula is：
Wherein, I is the current effective value, and n is the number sampled in the preset time period, and n is more than or equal to 1
Integer, i（k）For the current instantaneous value.
In the specific example of the present invention, sampling period T=T2-T1, number n=100 of sampled point, then adopt in the cycle
The data of sample are as shown in table 2 below.
Table 2
| Sampled point | 1 | 2 | …… | 100 |
| Current instantaneous value（A） | 5.5 | 5.4 | …… | 5.5 |
Sampled data is substituted into formula（4）It is calculated：
In addition, controller module 30 calculates active power always according to below equation：
Similarly, by discrete sampling, the active power i.e. in sampling period signal in the preset time period is calculated, it is public
Formula is：
Wherein, PjFor the active power.
Sampled data in above table is substituted into formula（6）It is calculated：
P=（330*5.5+325*5.4……+330*5.5）/100=790W.
The calculation formula of apparent energy is：
S=V*I （7）
The calculation formula of power factor is：
So, the above-mentioned data being calculated are substituted into formula（8）, can be calculated：
Therefore, from the foregoing, it will be observed that controller module 30 can be calculated voltage effective value, current effective value, active power,
The energy informations such as apparent energy, power factor.
The electric energy detection device of air conditioner according to embodiments of the present invention, it only need to increase voltage on original air-conditioning circuit and adopt
Egf block and current sample module, it is not necessary to extra power supply and control chip, using the stronger performance of controller module and firmly
Part characteristic can realizes the electric energy detection to air conditioner, and the Energy Saving Control to air conditioner is realized by the energy information of detection,
Therefore the area of electric-controlled plate is reduced, greatly reduces the cost of system, and also improve the reliability of system.
Fig. 6 is the flow chart according to the electric energy detection method of the air conditioner of the embodiment of the present invention.As shown in fig. 6, the air-conditioning
The electric energy detection method of device comprises the following steps：
S1, voltage sample module are sampled to the input AC electricity of air conditioner to obtain the voltage transient of input AC electricity
Value.
S2, current sample module are sampled instantaneous to obtain the electric current of input AC electricity to the input AC electricity of air conditioner
Value.
S3, controller module calculate empty according to the instantaneous voltage of input AC electricity and the current instantaneous value of input AC electricity
Adjust energy information of the device in preset time period.
Specifically, controller module is according to the formula of foregoing description（1）Extremely（8）Voltage effective value, electric current can be calculated
The energy informations such as virtual value, active power, apparent energy and power factor.
The electric energy detection method of the air conditioner of the present invention, proposed for the deficiency of the existing electric energy detection device of air-conditioning
A kind of brand-new detection method, automatically controlled plate suqare can be reduced, improve reliability and reduce system cost.
In one embodiment of the invention, the electric energy detection method of described air conditioner also includes：The current sample
Module is sampled to the input AC electricity of the air conditioner obtains the first current instantaneous value and the second current instantaneous value respectively；Institute
State controller module and judge whether second current instantaneous value is less than preset value；If it is, the controller module is according to institute
State the second current instantaneous value and the instantaneous voltage calculates energy information of the air conditioner in preset time period.
When the second current instantaneous value detected is less than preset value, according to the second current instantaneous value and instantaneous voltage meter
Energy information is calculated, substantially increases the degree of accuracy of electric energy detection.
The electric energy detection method of air conditioner according to embodiments of the present invention, utilize the stronger performance of controller module and hardware
Characteristic can realizes the electric energy detection to air conditioner, and the Energy Saving Control to air conditioner is realized by the energy information of detection, from
And realize and be realized with a low cost electric energy detection, and accuracy of detection is high, and reliability is high.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment（As computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction）Use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress used with reference to these instruction execution systems, device or equipment
Put.The more specifically example of computer-readable medium（Non-exhaustive list）Including following：Electricity with one or more wiring
Connecting portion（Electronic installation）, portable computer diskette box（Magnetic device）, random access memory（RAM）, read-only storage
（ROM）, erasable edit read-only storage（EPROM or flash memory）, fiber device, and portable optic disk is read-only deposits
Reservoir（CDROM）.In addition, computer-readable medium, which can even is that, to print the paper of described program thereon or other are suitable
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, have suitable combinational logic gate circuit application specific integrated circuit, programmable gate array（PGA）, scene
Programmable gate array（FPGA）Deng.
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly it is that by program the hardware of correlation can be instructed to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (8)
- A kind of 1. electric energy detection device of air conditioner, it is characterised in that including：Voltage sample module, for being sampled to the input AC electricity of air conditioner to obtain the voltage wink of input AC electricity Duration；Current sample module, for being sampled to the input AC electricity of the air conditioner to obtain the electricity of input AC electricity Instantaneous value is flowed, the current sample module includes the first current detecting end and the second current detecting end, the current sample module Including：Current transformer, the input AC of the primary coil of the current transformer and the air conditioner are electrically connected；First electricity Resistance, the first resistor are connected in parallel on the both ends of the secondary coil of the current transformer；First amplifier, first amplifier In-phase input end be connected with the positive terminal of the secondary coil of the current transformer, the inverting input of first amplifier It is connected with the output end of first amplifier, the output end of first amplifier and the first current detecting of controller module End is connected；Second resistance, inverting input and first amplification of the one end of the second resistance with first amplifier The output end of device is respectively connected with, the other end ground connection of the second resistance；Second amplifier, second amplifier it is same mutually defeated Enter end and the output direct current of preset voltage value is electrically connected, the inverting input of second amplifier and second amplifier Output end is connected after being connected with the negative pole end of the secondary coil of the current transformer；3rd amplifier, the 3rd amplifier In-phase input end be connected with the output end of first amplifier, the inverting input and described second of the 3rd amplifier The output end of amplifier is connected, the output end of the 3rd amplifier and the second current detecting end phase of the controller module Even；3rd resistor, one end of the 3rd resistor are connected with the inverting input of the 3rd amplifier, the 3rd resistor The other end is connected with the output end of the 3rd amplifier；Controller module, the controller module are connected with the voltage sample module and current sample module, the controller Module obtains the current sample module samples respectively according to the first current detecting end and the second current detecting end Current instantaneous value, and when the current instantaneous value obtained by the second current detecting end is less than preset value according to the voltage Instantaneous value and the current instantaneous value obtained by the second current detecting end calculate the air conditioner in preset time period Energy information, wherein, when the current instantaneous value obtained by the second current detecting end is more than or equal to the preset value, institute State controller module and institute is calculated according to the instantaneous voltage and the current instantaneous value obtained by the first current detecting end State energy information of the air conditioner in preset time period；AndPower module, for the input AC electricity to be converted to the output direct current of preset voltage value, and pass through the output Direct current is the voltage sample module, the current sample module and controller module power supply.
- 2. the electric energy detection device of air conditioner as claimed in claim 1, it is characterised in that the current sample module also includes First capacitance-resistance filter unit, the first capacitance-resistance filter unit be connected to the positive terminal of the secondary coil of the current transformer with Between the in-phase input end of first amplifier.
- 3. the electric energy detection device of air conditioner as claimed in claim 1, it is characterised in that the voltage sample module includes：Rectifier bridge, the input AC of the input of the rectifier bridge and the air conditioner are electrically connected；4th resistance, one end of the 4th resistance are connected with the positive output end of the rectifier bridge；5th resistance, one end of the 5th resistance are connected with the other end of the 4th resistance, the 5th resistance it is another Hold with the negative output terminal of the rectifier bridge and be respectively connected with；Bilateral diode, the first end of the bilateral diode and the second end are connected after being connected with one end of the 5th resistance, The 3rd end ground connection of the bilateral diode, the 4th end of the bilateral diode and the output direct current of the preset voltage value It is connected；Form the 6th resistance and the first electric capacity of the second capacitance-resistance filter unit, one end and the 5th resistance of the 6th resistance One end be connected, the other end of the 6th resistance is connected with one end of first electric capacity, the other end of first electric capacity Ground connection, the node between the 6th resistance and the first electric capacity are connected with the voltage detecting end of the controller module.
- 4. the electric energy detection device of air conditioner as claimed in claim 1, it is characterised in that the power module is non-isolation type Switching Power Supply.
- 5. the electric energy detection device of air conditioner as claimed in claim 1, it is characterised in that the energy information has including voltage Valid value, current effective value, active power, apparent energy and power factor.
- 6. the electric energy detection device of air conditioner as claimed in claim 5, it is characterised in that the controller module is according to following Formula calculates the voltage effective value in the preset time period：<mrow> <mi>V</mi> <mo>=</mo> <msqrt> <mrow> <mfrac> <mn>1</mn> <mi>n</mi> </mfrac> <munderover> <mo>&Sigma;</mo> <mrow> <mi>k</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>n</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mrow> <mo>&lsqb;</mo> <mi>v</mi> <mrow> <mo>(</mo> <mi>k</mi> <mo>)</mo> </mrow> <mo>&rsqb;</mo> </mrow> <mn>2</mn> </msup> </mrow> </msqrt> </mrow>Wherein, V is the voltage effective value, and n is the number sampled in the preset time period, and n is whole more than or equal to 1 Number, v (k) is the instantaneous voltage.
- 7. the electric energy detection device of air conditioner as claimed in claim 6, it is characterised in that the controller module is according to following Formula calculates the current effective value in the preset time period：<mrow> <mi>I</mi> <mo>=</mo> <msqrt> <mrow> <mfrac> <mn>1</mn> <mi>n</mi> </mfrac> <munderover> <mo>&Sigma;</mo> <mrow> <mi>k</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>n</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mrow> <mo>&lsqb;</mo> <mi>i</mi> <mrow> <mo>(</mo> <mi>k</mi> <mo>)</mo> </mrow> <mo>&rsqb;</mo> </mrow> <mn>2</mn> </msup> </mrow> </msqrt> </mrow>Wherein, I is the current effective value, and i (k) is the current instantaneous value.
- 8. the electric energy detection device of air conditioner as claimed in claim 7, it is characterised in that the controller module is according to following Formula calculates the active power in the preset time period：<mrow> <msub> <mi>P</mi> <mi>j</mi> </msub> <mo>=</mo> <mfrac> <mn>1</mn> <mi>n</mi> </mfrac> <munderover> <mo>&Sigma;</mo> <mrow> <mi>k</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>n</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <mi>v</mi> <mrow> <mo>(</mo> <mi>k</mi> <mo>)</mo> </mrow> <mi>i</mi> <mrow> <mo>(</mo> <mi>k</mi> <mo>)</mo> </mrow> </mrow>Wherein, PjFor the active power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200460.4A CN104181385B (en) | 2013-05-24 | 2013-05-24 | The electric energy detection method and electric energy detection device of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200460.4A CN104181385B (en) | 2013-05-24 | 2013-05-24 | The electric energy detection method and electric energy detection device of air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104181385A CN104181385A (en) | 2014-12-03 |
| CN104181385B true CN104181385B (en) | 2018-02-02 |
Family
ID=51962603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310200460.4A Active CN104181385B (en) | 2013-05-24 | 2013-05-24 | The electric energy detection method and electric energy detection device of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104181385B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678143A (en) * | 2015-02-28 | 2015-06-03 | 广东美的制冷设备有限公司 | Air conditioner as well as method and device for detecting power consumption of air conditioner |
| CN104879900A (en) * | 2015-06-09 | 2015-09-02 | 珠海格力电器股份有限公司 | Method, device and equipment for monitoring air conditioner |
| CN105066346B (en) * | 2015-07-31 | 2017-12-19 | 广东美的制冷设备有限公司 | Power consumption quantity measuring method, device and the air conditioner of air conditioner |
| CN105091222B (en) * | 2015-07-31 | 2017-11-10 | 广东美的制冷设备有限公司 | Power consumption quantity measuring method, device and the air conditioner of air conditioner |
| CN105091220B (en) * | 2015-07-31 | 2017-11-10 | 广东美的制冷设备有限公司 | Power consumption quantity measuring method, device and the air conditioner of air conditioner |
| CN105091223B (en) * | 2015-07-31 | 2017-11-10 | 广东美的制冷设备有限公司 | Power consumption quantity measuring method, device and the air conditioner of air conditioner |
| CN105322921B (en) * | 2015-11-25 | 2018-05-22 | 珠海万力达电气自动化有限公司 | A kind of unipolarity AD over-sampling modulate circuits |
| CN106771506A (en) * | 2016-12-15 | 2017-05-31 | 四川长虹电器股份有限公司 | Air-conditioner outdoor unit running current detection method |
| CN107504655A (en) * | 2017-09-14 | 2017-12-22 | 广东美的制冷设备有限公司 | Air-conditioner outdoor unit consumes the computational methods and computing device and air-conditioning of power |
| CN110274368A (en) * | 2019-06-28 | 2019-09-24 | 宏源地能热泵科技（中山）有限公司 | A kind of air-conditioning with electricity consumption detection function |
| CN110285553B (en) * | 2019-07-01 | 2020-12-29 | 珠海格力电器股份有限公司 | Air conditioner power metering method, power detection circuit and air conditioner |
| CN110261669A (en) * | 2019-07-12 | 2019-09-20 | 四川虹美智能科技有限公司 | Detection plate, frequency-changeable compressor intelligent management system and operational parameter detection method |
| CN110361589B (en) * | 2019-08-09 | 2021-09-28 | 四川虹美智能科技有限公司 | Device and method for acquiring running state data of compressor and management system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387662A (en) * | 2007-10-08 | 2009-03-18 | 杭州利尔达科技有限公司 | Watthour meter of three phase electronic electric energy meter and measurement method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1892234A (en) * | 2005-07-07 | 2007-01-10 | 乐金电子(天津)电器有限公司 | Electrical measurement device and method for air conditioner |
| CN201289504Y (en) * | 2008-09-18 | 2009-08-12 | 李颖 | Wide range energy counting device |
| CN201606985U (en) * | 2010-03-26 | 2010-10-13 | 武汉燮美科技有限公司 | Energy-saving air conditioner with card management |
| CN201955394U (en) * | 2010-10-18 | 2011-08-31 | 宁波奥克斯空调有限公司 | Air-conditioning power consumption metering and display device |
| JP2012233604A (en) * | 2011-04-28 | 2012-11-29 | Fujitsu General Ltd | Air conditioner |
| CN203310908U (en) * | 2013-05-24 | 2013-11-27 | 广东美的制冷设备有限公司 | Electric energy detection device for air conditioner |
-
2013
- 2013-05-24 CN CN201310200460.4A patent/CN104181385B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387662A (en) * | 2007-10-08 | 2009-03-18 | 杭州利尔达科技有限公司 | Watthour meter of three phase electronic electric energy meter and measurement method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104181385A (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104181385B (en) | The electric energy detection method and electric energy detection device of air conditioner | |
| CN104682690B (en) | The alternating voltage virtual value evaluation method and device of supply unit | |
| CN204556731U (en) | Internal resistance of cell measuring system | |
| CN104377951B (en) | power factor correction method and device, air conditioner and electric appliance | |
| CN103675435B (en) | Frequency-variable air conditioner outdoor machine and the self-checking system of complete machine power consumption thereof and method | |
| CN204613137U (en) | Air-anion concentration detector | |
| CN104135002B (en) | Alternating expression power factor corrector | |
| CN203310908U (en) | Electric energy detection device for air conditioner | |
| CN110488112A (en) | Classification metering method non-intrusion type load identification and its realized based on recognition result | |
| CN104678143A (en) | Air conditioner as well as method and device for detecting power consumption of air conditioner | |
| CN106569447A (en) | Electric energy meter having AC/DC adaptive electric energy measurement function and electric energy measurement method | |
| CN200996977Y (en) | Charge-consumption detecting circuit and air conditioner therewith | |
| CN204374272U (en) | A kind of mutual inductor mode transformer grounding leakage current wireless monitoring device | |
| CN104113200A (en) | Bridgeless APFC system used for variable frequency air conditioner and method for controlling the system | |
| CN205593761U (en) | Intelligent electric automobile drive system test platform | |
| CN111751645A (en) | Transformer direct-current magnetic bias monitoring method, device, equipment and system | |
| CN101937069B (en) | Voltage characteristic detection system and method of SOC (System On Chip) intelligent electric meter | |
| CN109560712A (en) | Air-conditioning system, frequency-variable controller and its alternating voltage evaluation method and device | |
| TW200408812A (en) | Display device of electric power saving effect using for inverter apparatus | |
| CN110285553B (en) | Air conditioner power metering method, power detection circuit and air conditioner | |
| CN208654281U (en) | A kind of test circuit based on charging chip | |
| CN203502488U (en) | Power detection device for air conditioner | |
| CN103616636A (en) | Multi-contact-finger contact state detection method of conductive circuit of electrical equipment | |
| CN205958641U (en) | Current detection circuit | |
| CN206506299U (en) | The centralized Control circuit of SVG and capacitor switching based on MCU |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |