CN109595774B - Sampling detection circuit of air conditioner and air conditioner - Google Patents
Sampling detection circuit of air conditioner and air conditioner Download PDFInfo
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- CN109595774B CN109595774B CN201811390404.0A CN201811390404A CN109595774B CN 109595774 B CN109595774 B CN 109595774B CN 201811390404 A CN201811390404 A CN 201811390404A CN 109595774 B CN109595774 B CN 109595774B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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Abstract
The invention provides a sampling detection circuit of an air conditioner and the air conditioner, wherein the sampling detection circuit of the air conditioner comprises: the processor is internally provided with a gain unit, the gain unit is used for amplifying the received sampling signal so as to analyze and process the amplified sampling signal by a logic operation unit in the processor, wherein the sampling signal comprises at least one of the following: the system comprises a compressor sampling signal, a PFC sampling signal, a fan sampling signal and an environment parameter sampling signal. By the technical scheme, interference signals received in the sampling feedback process are reduced, and the reliability and stability of the sampling detection circuit are improved.
Description
Technical Field
The invention relates to the technical field of circuits, in particular to a sampling detection circuit of an air conditioner and the air conditioner.
Background
For the air conditioner, high-Power hardware needs to be monitored in real time for operation states, such as a compressor, a fan, and Power Factor Correction (PFC) to perform feedback adjustment on the operation states of the hardware by monitoring the operation states.
In the related art, the sampling signal of the sampling circuit is usually input to the processor for analysis, which results in many technical defects:
(1) since the sampling Circuit generally includes a sampling module, a filtering module, an analog-to-digital conversion module, an operational amplification module, and the like, and all of them are assembled on a PCB (Printed Circuit Board) by unpackaged components, the process of processing the sampling signal by the sampling Circuit is subject to much external interference.
(2) An external operational amplifier circuit generally adopts an operational amplifier, the operational amplifier is large in size, so that the area of a PCB is large, and the external operational amplifier cannot be subjected to gain adjustment, so that the PCB is high in cost and poor in compatibility.
Disclosure of Invention
The present invention has been made to solve at least one of the above-mentioned problems occurring in the prior art or the related art.
Therefore, one objective of the present invention is to provide a sampling detection circuit for an air conditioner.
Another object of the present invention is to provide an air conditioner.
To achieve the above object, according to an embodiment of a first aspect of the present invention, there is provided a sampling detection circuit of an air conditioner, including: the processor is internally provided with a gain unit, the gain unit is used for amplifying the received sampling signal so as to analyze and process the amplified sampling signal by a logic operation unit in the processor, wherein the sampling signal comprises at least one of the following: the system comprises a compressor sampling signal, a PFC sampling signal, a fan sampling signal and an environment parameter sampling signal.
According to the sampling detection circuit of the air conditioner, the gain unit is arranged in the processor, on one hand, the processor is usually a packaged control chip (such as an MCU, a CPU, a DSP, a single chip microcomputer, an embedded device and the like), so that the gain unit can shield external interference signals by means of a packaging structure of the processor, on the other hand, the requirement on filtering can be reduced due to reduction of the interference signals, the complexity of an external filtering unit of the processor can be reduced, the layout area of an external PCB is reduced, on the other hand, the processor can adjust the gain of the built-in gain unit through an internal circuit and elements, the hardware cost and the debugging complexity of the sampling detection circuit can be reduced, the compatibility of the sampling detection circuit can be improved, and the sampling detection circuit is suitable for circuits with different amplification requirements.
Specifically, because the object that above-mentioned sampling detection circuit gathered is at least one in compressor sampled signal, PFC sampled signal, fan sampled signal and environmental parameter sampled signal, above-mentioned sampled signal is the great signal of amplitude (more than the milliampere level), and what the treater self was operated is the signal (microampere level) that the amplitude is less, when placing the treater in the gain unit in the treater, the inside interfering signal of treater that the sampled signal received is also less, consequently, also need not to set up complicated wave filter for the gain unit, only can satisfy the filtering demand through setting up some bypass electric capacity, in addition, the gain unit also need not to set up to the fortune ware, only set up a plurality of resistances and carry out the partial pressure, can realize amplification processing based on the voltage division principle, can reduce circuit cost effectively, use component quantity and the complexity of circuit structure design.
The sampling detection circuit of the air conditioner according to the above embodiment of the present invention preferably further includes: the filtering unit is used for filtering the sampling voltage signal, an output interface of the filtering unit is connected to a sampling input interface of the processor, the filtered sampling voltage signal is configured to be a sampling signal, and the sampling signal can be transmitted to the gain unit through the sampling input interface.
According to the sampling detection circuit of the air conditioner, the filtering unit is arranged outside the processor, and the sampling voltage signal is subjected to filtering processing to obtain the low-noise sampling signal, so that the sampling signal cannot generate large noise interference on the logic operation unit in the processor when being amplified by the gain unit, and the reliability and the accuracy of the sampling detection circuit are further improved.
According to the sampling detection circuit of the air conditioner according to the above embodiment of the present invention, preferably, the filtering unit includes a capacitive element and an inductive element connected in series and/or in parallel.
According to the sampling detection circuit of the air conditioner, the filtering unit is arranged to comprise the capacitive element and the inductive element which are connected in series and/or in parallel, wherein the capacitive element is used for filtering alternating current noise, and the inductive element is used for filtering ripple interference or spike pulse signals, so that the accuracy and the smoothness of the sampling signals can be effectively improved, and the interference of the sampling signals on the logic operation unit in the processor can be further reduced.
The sampling detection circuit of the air conditioner according to the above embodiment of the present invention preferably further includes: the voltage dividing unit is used for converting the sampling current signal into a sampling voltage signal, an output interface of the voltage dividing unit is connected to an input interface of the filtering unit, and the input interface of the voltage dividing unit is used for receiving the collected current signal, wherein the current signal forms a potential difference signal when being applied to a plurality of voltage dividing elements in the voltage dividing unit, at least one voltage dividing element is connected to the input interface of the filtering unit, and the potential difference signal of the at least one voltage dividing element is configured to be the sampling voltage signal.
According to the sampling detection circuit of the air conditioner, the voltage division unit is arranged outside the processor to convert the sampling current signal into the sampling voltage signal, and then the sampling voltage signal is continuously transmitted to the filtering unit, so that the complexity of the design of the sampling detection circuit is further simplified, and meanwhile, the reliability and the accuracy of analyzing and processing the sampling signal are improved.
According to the sampling detection circuit of the air conditioner in the above embodiment of the present invention, preferably, the voltage dividing element includes at least two resistive elements connected in series and/or in parallel.
According to the sampling detection circuit of the air conditioner, the voltage dividing element is arranged to comprise at least two resistive elements which are connected in series and/or in parallel, the value range of the sampling voltage signal can be flexibly set, and the design complexity and debugging difficulty of the sampling detection circuit are further simplified.
The sampling detection circuit of the air conditioner according to the above embodiment of the present invention preferably further includes: and the compressor sampling interface is used for receiving a compressor operation parameter signal of the sampling output interface of the compressor driving circuit, and the compressor operation parameter signal is sequentially processed by the voltage division unit and the filtering unit so as to be converted into a compressor sampling signal and input into the built-in gain unit of the processor.
According to the sampling detection circuit of the air conditioner, the compressor sampling interface is arranged on the sampling detection circuit, the compressor operation parameter signals are sequentially processed by the voltage division unit and the filtering unit to be converted into the compressor sampling signals and input the compressor sampling signals to the gain unit arranged in the processor, the gain unit transmits the amplified sampling signals to the logic operation unit for analysis and processing, and therefore closed-loop feedback control over the compressor is achieved.
Wherein the compressor operation parameter signal comprises at least one of an operation frequency, a load current, a rotation speed, a rotor angle and a load voltage, preferably the load current is selected as a bus current.
The sampling detection circuit of the air conditioner according to the above embodiment of the present invention preferably further includes: and the PFC sampling interface is used for receiving a PFC operation parameter signal of a sampling output interface of the PFC driving circuit, and the PFC operation parameter signal is sequentially processed by the voltage division unit and the filtering unit so as to be converted into a PFC sampling signal and input into a gain unit arranged in the processor.
According to the sampling detection circuit of the air conditioner, the PFC sampling interface is arranged on the sampling detection circuit, the PFC operation parameter signal is sequentially processed by the voltage division unit and the filtering unit to be converted into the PFC sampling signal and input into the gain unit arranged in the processor, the gain unit transmits the amplified sampling signal to the logic operation unit for analysis processing, and therefore closed-loop feedback control over PFC is achieved.
Wherein the PFC operation parameter signal includes at least one of an operation frequency, a PFC current and a load voltage, the PFC operation parameter signal is configured to reflect an operation state of the PFC, and the PFC sampling interface is not limited to be connected to the PFC module.
The sampling detection circuit of the air conditioner according to the above embodiment of the present invention preferably further includes: and the fan sampling interface is used for receiving fan operation parameter signals of the sampling output interface of the fan driving circuit, and the fan operation parameter signals are sequentially processed by the voltage division unit and the filtering unit so as to be converted into fan sampling signals and input the fan sampling signals to the gain unit arranged in the processor.
According to the sampling detection circuit of the air conditioner, the fan sampling interface is arranged on the sampling detection circuit, the fan operation parameter signals are sequentially processed by the voltage division unit and the filtering unit to be converted into fan sampling signals and input the fan sampling signals to the gain unit arranged in the processor, and the gain unit transmits the amplified sampling signals to the logic operation unit for analysis and processing, so that closed-loop feedback control of the fan is achieved.
The fan operation parameter signal comprises at least one of operation frequency, load current, rotating speed, rotor angle and load voltage, and preferably, the load current is selected as bus current.
According to the sampling detection circuit of the air conditioner in the above embodiment of the present invention, preferably, the gain unit includes a resistive amplification element, a control terminal of the resistive amplification element is capable of receiving a gain adjustment signal, and the gain adjustment signal is used to adjust a gain ratio of the resistive amplification element, where the gain unit includes a signal input terminal and a signal output terminal, the signal input terminal is used to receive the sampling signal, and the signal output terminal is used to transmit the sampling signal amplified according to the gain ratio to the logic operation unit.
According to the sampling detection circuit of the air conditioner, the gain unit is arranged to comprise the resistive amplifying element, the control end of the resistive amplifying element can receive the gain adjusting signal, the gain adjusting signal is used for adjusting the gain proportion of the resistive amplifying element, an operational amplifier is not needed, the complexity of circuit layout and debugging is simplified, the complexity of gain proportion adjustment is also simplified, and the flexibility and the compatibility of amplification processing are improved.
According to an embodiment of the second aspect of the present invention, there is also provided an air conditioner including: the technical scheme defines a sampling detection circuit of the air conditioner; and a sampling output interface of the hardware driving circuit can be communicated to the sampling detection circuit, and a processor of the sampling detection circuit is used for sampling feedback control on the hardware driving circuit.
According to the air conditioner of the embodiment of the present invention, all technical effects of the recognition device having the voice command recognition device are not described herein again.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 illustrates a schematic block diagram of a sampling detection circuit of an air conditioner according to one embodiment of the present invention;
FIG. 2 illustrates a topology diagram of a gain unit of a sampling detection circuit of an air conditioner according to another embodiment of the present invention;
FIG. 3 illustrates a topology diagram of a gain unit of a sampling detection circuit of an air conditioner according to another embodiment of the present invention;
fig. 4 shows a schematic block diagram of an air conditioner according to another embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The following describes a sampling detection circuit of an air conditioner according to an embodiment of the present invention with reference to fig. 1 to 4.
Fig. 1 illustrates a schematic diagram of a sampling detection circuit of an air conditioner according to an embodiment of the present invention.
As shown in fig. 1, a sampling detection circuit 100 of an air conditioner according to an embodiment of the present invention includes: the processor 102, a gain unit 1022 is built in the processor 102, and the gain unit 1022 is configured to amplify the received sampling signal, so that the logic operation unit 1024 in the processor 102 analyzes and processes the amplified sampling signal, where the sampling signal includes at least one of the following: the system comprises a compressor sampling signal, a PFC sampling signal, a fan sampling signal and an environment parameter sampling signal.
The sampling detection circuit 100 of the air conditioner according to the embodiment of the present invention is implemented by embedding the gain unit 1022 in the processor 102, on one hand, since the processor 102 is usually a packaged control chip (such as MCU, CPU, DSP, single chip, and embedded device), the gain unit 1022 can also shield external interference signals by means of the packaging structure of the processor 102, and on the other hand, due to the reduction of the interference signal, the filtering requirement can be reduced, i.e. the complexity of the external filtering unit 106 of the processor 102 can be reduced, therefore, the layout area of the external PCB is reduced, and on the other hand, the processor 102 can perform gain adjustment on the built-in gain unit 1022 through internal circuits and elements, which not only can reduce the hardware cost and the debugging complexity of the sampling detection circuit 100, but also can improve the compatibility of the sampling detection circuit 100, and is suitable for various circuits with different amplification requirements.
Specifically, since the object collected by the sampling detection circuit 100 is at least one of a compressor sampling signal, a PFC sampling signal, a fan sampling signal and an environmental parameter sampling signal, the sampled signals are all signals with larger amplitude (above milliamp level), while the processor 102 operates with smaller amplitude signals (microamp level), when the gain unit 1022 is built in the processor 102, the sampled signal is also less interfered by the internal interference signal of the processor 102, therefore, it is not necessary to provide a complicated filter for the gain unit 1022, and the filtering requirement can be satisfied only by providing some bypass capacitors, in addition, the gain unit 1022 does not need to be an operational amplifier, only a plurality of resistors are provided for voltage division, the amplifier can realize amplification treatment based on a voltage division principle, and can effectively reduce the circuit cost, the number of used elements and the complexity of circuit structure design.
The sampling detection circuit 100 of the air conditioner according to the above embodiment of the present invention preferably further includes: a filtering unit 106, configured to perform filtering processing on the sampled voltage signal, where an output interface of the filtering unit 106 is connected to a sampling input interface (such as the general I/O interface Iin and the reference interface Iref shown in fig. 1 and fig. 4) of the processor 102, and the filtered sampled voltage signal is configured as a sampled signal, where the sampled signal can be transmitted to the gain unit 1022 through the sampling input interface.
According to the sampling detection circuit 100 of the air conditioner in the embodiment of the present invention, the filtering unit 106 is disposed outside the processor 102, and the sampled voltage signal is filtered to obtain a low-noise sampled signal, so that when the sampled signal is amplified by the gain unit 1022, the sampled signal does not generate large noise interference to the logic operation unit 1024 in the processor 102, so as to further improve the reliability and accuracy of the sampling detection circuit 100.
According to the sampling detection circuit 100 of the air conditioner according to the above-mentioned embodiment of the present invention, preferably, the filtering unit 106 includes a capacitive element and an inductive element connected in series and/or in parallel.
According to the sampling detection circuit 100 of the air conditioner in the embodiment of the present invention, the filtering unit 106 includes a capacitive element and an inductive element connected in series and/or in parallel, where the capacitive element is used for filtering ac noise, and the inductive element is used for filtering ripple interference or spike pulse signals, so that not only can the accuracy and smoothness of the sampled signals be effectively improved, but also the interference of the sampled signals to the logic operation unit 1024 in the processor 102 can be further reduced.
The sampling detection circuit 100 of the air conditioner according to the above embodiment of the present invention preferably further includes: the voltage dividing unit 104 is configured to convert the sampled current signal into a sampled voltage signal, an output interface of the voltage dividing unit 104 is connected to an input interface of the filtering unit 106, and an input interface of the voltage dividing unit 104 is configured to receive the collected current signal, where the current signal forms a potential difference signal when applied to a plurality of voltage dividing elements in the voltage dividing unit 104, at least one voltage dividing element is connected to the input interface of the filtering unit 106, and the potential difference signal of the at least one voltage dividing element is configured to be the sampled voltage signal.
According to the sampling detection circuit 100 of the air conditioner, the voltage division unit 104 is arranged outside the processor 102 to convert the sampling current signal into the sampling voltage signal, and then the sampling voltage signal is continuously transmitted to the filtering unit 106, so that the complexity of the design of the sampling detection circuit 100 is further simplified, and meanwhile, the reliability and the accuracy of analyzing the sampling signal are improved.
According to the sampling detection circuit 100 of the air conditioner of the above embodiment of the present invention, preferably, the voltage dividing element includes at least two resistive elements connected in series and/or in parallel.
According to the sampling detection circuit 100 of the air conditioner, the voltage dividing element is arranged to comprise at least two resistive elements which are connected in series and/or in parallel, the value range of the sampling voltage signal can be flexibly set, and the design complexity and debugging difficulty of the sampling detection circuit 100 are further simplified.
The sampling detection circuit 100 of the air conditioner according to the above embodiment of the present invention preferably further includes: the compressor sampling interface is configured to receive a compressor operation parameter signal of a sampling output interface of the compressor driving circuit, and the compressor operation parameter signal is sequentially processed by the voltage dividing unit 104 and the filtering unit 106, so as to be converted into a compressor sampling signal and input the compressor sampling signal to the gain unit 1022 built in the processor 102.
According to the sampling detection circuit 100 of the air conditioner, the sampling detection circuit 100 is provided with the compressor sampling interface, the compressor operation parameter signal is sequentially processed by the voltage division unit 104 and the filtering unit 106 to be converted into the compressor sampling signal and input into the gain unit 1022 arranged in the processor 102, and the gain unit 1022 transmits the amplified sampling signal to the logic operation unit 1024 for analysis and processing, so that the closed-loop feedback control of the compressor is realized.
Wherein the compressor operation parameter signal comprises at least one of an operation frequency, a load current, a rotation speed, a rotor angle and a load voltage, preferably the load current is selected as a bus current.
The sampling detection circuit 100 of the air conditioner according to the above embodiment of the present invention preferably further includes: the PFC sampling interface is configured to receive a PFC operation parameter signal of a sampling output interface of the PFC driving circuit, and the PFC operation parameter signal is sequentially processed by the voltage dividing unit 104 and the filtering unit 106 to be converted into a PFC sampling signal and input the PFC sampling signal to the gain unit 1022 embedded in the processor 102.
According to the sampling detection circuit 100 of the air conditioner, the sampling detection circuit 100 is provided with the PFC sampling interface, the PFC operation parameter signal is sequentially processed by the voltage division unit 104 and the filtering unit 106 to be converted into the PFC sampling signal and input into the gain unit 1022 arranged in the processor 102, and the gain unit 1022 transmits the amplified sampling signal to the logic operation unit 1024 for analysis and processing, so that closed-loop feedback control of PFC is realized.
Wherein the PFC operation parameter signal includes at least one of an operation frequency, a PFC current and a load voltage, the PFC operation parameter signal is configured to reflect an operation state of the PFC, and the PFC sampling interface is not limited to be connected to the PFC module.
The sampling detection circuit 100 of the air conditioner according to the above embodiment of the present invention preferably further includes: and the fan sampling interface is configured to receive a fan operation parameter signal of a sampling output interface of the fan driving circuit, and the fan operation parameter signal is sequentially processed by the voltage division unit 104 and the filtering unit 106, so as to be converted into a fan sampling signal and input the fan sampling signal to the gain unit 1022 built in the processor 102.
According to the sampling detection circuit 100 of the air conditioner, the sampling detection circuit 100 is provided with the fan sampling interface, fan operation parameter signals are sequentially processed by the voltage division unit 104 and the filtering unit 106 to be converted into fan sampling signals and input into the gain unit 1022 arranged in the processor 102, and the gain unit 1022 transmits the amplified sampling signals to the logic operation unit 1024 for analysis and processing, so that closed-loop feedback control of the fan is realized.
The fan operation parameter signal comprises at least one of operation frequency, load current, rotating speed, rotor angle and load voltage, and preferably, the load current is selected as bus current.
According to the sampling detection circuit 100 of the air conditioner in the above embodiment of the present invention, preferably, the gain unit 1022 includes a resistive amplification element, a control terminal of the resistive amplification element is capable of receiving a gain adjustment signal, and the gain adjustment signal is used for adjusting a gain ratio of the resistive amplification element, where the gain unit 1022 includes a signal input terminal and a signal output terminal, the signal input terminal is used for receiving the sampling signal, and the signal output terminal is used for transmitting the sampling signal amplified according to the gain ratio to the logic operation unit 1024.
According to the sampling detection circuit 100 of the air conditioner, the gain setting unit 1022 includes a resistive amplifying element, a control end of the resistive amplifying element can receive a gain adjusting signal, the gain adjusting signal is used for adjusting the gain proportion of the resistive amplifying element, and an operational amplifier is not required to be arranged, so that not only is the complexity of circuit layout and debugging simplified, but also the complexity of gain proportion adjustment is simplified, and the flexibility and compatibility of amplification processing are improved.
Fig. 2 illustrates a topology of a gain unit of a sampling detection circuit of an air conditioner according to another embodiment of the present invention.
As shown in fig. 2, a gain unit of a sampling detection circuit of an air conditioner according to another embodiment of the present invention includes: the voltage-dividing resistors R1 and R2 … … Rn are connected in series, wherein n is a positive integer greater than or equal to 2, R2 is a resistance amplifying element with adjustable resistance, Inc and Ind are input ends of sampling signals, and Ina and Inb are output ends of the amplified sampling signals.
Fig. 3 illustrates a topology of a gain unit of a sampling detection circuit of an air conditioner according to another embodiment of the present invention.
As shown in fig. 3, a gain unit of a sampling detection circuit of an air conditioner according to another embodiment of the present invention includes: r2 is a resistive amplifying element with adjustable resistance, Inc and GND (reference ground) are input ends of sampling signals, Ina and GND are output ends of the amplified sampling signals, that is, Uc is a sampling signal, Uc is a potential difference signal between Inc and GND, Ua is an amplified sampling signal, and Ua is a potential difference signal between Ina and GND.
Fig. 4 shows a schematic block diagram of an air conditioner according to another embodiment of the present invention.
As shown in fig. 4, an air conditioner according to another embodiment of the present invention includes: the sampling detection circuit 100 of the air conditioner defined in any one of the above technical solutions (including all the structural features and signal processing steps shown in fig. 1, which are not described herein again); the hardware driving circuit 200, a sampling output interface of the hardware driving circuit 200 can be communicated to the sampling detection circuit 100, and a processor of the sampling detection circuit 100 is used for sampling feedback control on the hardware driving circuit 200.
The technical scheme of the invention is described in detail above with reference to the accompanying drawings, and in view of technical problems in the related art, the invention provides a sampling detection circuit of an air conditioner and an air conditioner, wherein a gain unit is built in a processor, on one hand, since the processor is usually a packaged control chip (such as an MCU, a CPU, a DSP, a single chip, an embedded device, and the like), the gain unit can also shield external interference signals by means of a packaging structure of the processor, on the other hand, due to reduction of the interference signals, requirements for filtering can be reduced, that is, complexity of an external filtering unit of the processor can be reduced, so that a layout area of an external PCB is reduced, on the other hand, a general interface is not required to be additionally arranged to control a gain ratio of a built-in gain, and occupation of a general interface of the processor is reduced.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs, and the components in the embodiment of the invention can be combined, divided and deleted according to actual needs. The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A sampling detection circuit of an air conditioner is characterized by comprising:
a processor, wherein a gain unit is arranged in the processor, the gain unit is used for amplifying the received sampling signal so as to be used for a logic operation unit in the processor to analyze and process the amplified sampling signal,
the sampling signal is a signal above milliampere level, and the sampling signal includes at least one of the following: the method comprises the following steps of (1) sampling signals of a compressor, PFC (power factor correction) sampling signals, fan sampling signals and environment parameter sampling signals;
the filtering unit is used for carrying out filtering processing on the sampling voltage signal, and the sampling voltage signal after the filtering processing is configured to be the sampling signal;
wherein the filtering unit comprises a capacitive element and an inductive element which are connected in series and/or in parallel;
the gain unit comprises a resistive amplifying element, a control end of the resistive amplifying element can receive a gain adjusting signal, and the gain adjusting signal is used for adjusting the gain proportion of the resistive amplifying element.
2. The sampling detection circuit of an air conditioner according to claim 1,
the output interface of the filtering unit is connected to the sampling input interface of the processor
Wherein the sampling signal is transmittable to the gain unit through the sampling input interface.
3. The sampling detection circuit of an air conditioner according to claim 1, further comprising:
a voltage dividing unit for converting the sampling current signal into the sampling voltage signal, an output interface of the voltage dividing unit is connected to an input interface of the filtering unit, the input interface of the voltage dividing unit is used for receiving the collected current signal,
wherein the current signal forms a potential difference signal when applied to a plurality of voltage dividing elements in the voltage dividing unit, at least one of the voltage dividing elements is connected to the input interface of the filtering unit, and the potential difference signal of at least one of the voltage dividing elements is configured as the sampling voltage signal.
4. The sampling detection circuit of an air conditioner according to claim 3,
the voltage dividing element comprises at least two resistive elements connected in series and/or in parallel.
5. The sampling detection circuit of an air conditioner according to claim 3, further comprising:
the compressor sampling interface is used for receiving a compressor operation parameter signal of a sampling output interface of the compressor driving circuit, and the compressor operation parameter signal sequentially passes through the voltage division unit and the filtering unit for processing so as to be converted into the compressor sampling signal and input into the built-in gain unit of the processor.
6. The sampling detection circuit of an air conditioner according to claim 3, further comprising:
and the PFC sampling interface is used for receiving a PFC operation parameter signal of a sampling output interface of the PFC driving circuit, and the PFC operation parameter signal is sequentially processed by the voltage division unit and the filtering unit so as to be converted into the PFC sampling signal and input into a built-in gain unit of the processor.
7. The sampling detection circuit of air conditioner according to claim 3, characterized in that further
The method comprises the following steps:
and the fan sampling interface is used for receiving fan operation parameter signals of a sampling output interface of the fan driving circuit, and the fan operation parameter signals are sequentially processed by the voltage division unit and the filtering unit so as to be converted into the fan sampling signals and input into the gain unit arranged in the processor.
8. The sampling detection circuit of an air conditioner according to any one of claims 1 to 7,
the gain unit comprises a plurality of voltage division resistors R1 and R2 … … Rn which are connected in series, wherein n is a positive integer greater than or equal to 2, and one of the voltage division resistors is a resistance-adjustable resistive amplification element;
the gain unit comprises a signal input end and a signal output end, the signal input end is used for receiving the sampling signal, and the signal output end is used for transmitting the sampling signal amplified according to the gain proportion to the logic operation unit.
9. An air conditioner, comprising:
a sampling detection circuit of an air conditioner according to any one of claims 1 to 8;
and a sampling output interface of the hardware driving circuit can be communicated to the sampling detection circuit, and a processor of the sampling detection circuit is used for carrying out sampling feedback control on the hardware driving circuit.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201233421Y (en) * | 2008-06-27 | 2009-05-06 | 陈小尘 | Adjustable current sensor |
| CN101841901A (en) * | 2009-12-30 | 2010-09-22 | 中国科学院电子学研究所 | Closed-loop automatic gain automatic control device and method for radio-frequency channel |
| CN201965775U (en) * | 2011-01-17 | 2011-09-07 | 安徽状元郎电子科技有限公司 | Handheld learning machine |
| CN203232282U (en) * | 2013-04-28 | 2013-10-09 | 济南大学 | Multipath data acquisition system applied for laser array sensor |
| CN204244534U (en) * | 2014-12-08 | 2015-04-01 | 江苏建筑职业技术学院 | Campus illuminating energy-saving control system |
| CN104584417A (en) * | 2012-08-13 | 2015-04-29 | 德克萨斯仪器股份有限公司 | Sensorless field-oriented control (FOC) without current sampling for motors |
| CN104748313A (en) * | 2015-03-31 | 2015-07-01 | 广东美的制冷设备有限公司 | Air conditioner and temperature sampling device used for air conditioner |
| CN207677588U (en) * | 2017-12-27 | 2018-07-31 | 深圳市展业电机有限公司 | A kind of miniature brushless direct-current motor of built-in controller |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6412646A (en) * | 1987-07-06 | 1989-01-17 | Agency Ind Science Techn | Dpsk demodulation system |
| EP0926887A3 (en) * | 1997-12-22 | 2001-03-21 | Texas Instruments Inc. | Automatic gain and offset control of a video decoder analog front end |
| US7149263B2 (en) * | 2000-06-26 | 2006-12-12 | Hitachi Kokusai Electric Inc. | AGC method and circuit for digital radio receiver |
| CN201233288Y (en) * | 2008-07-22 | 2009-05-06 | 深圳市英唐智能控制股份有限公司 | Multipath data acquisition system |
| CN106941343A (en) * | 2017-01-10 | 2017-07-11 | 广州致远电子股份有限公司 | A kind of linear variable gain amplifier |
| CN206313932U (en) * | 2017-01-11 | 2017-07-07 | 张媛 | A kind of broadcast television signal monitoring system |
-
2018
- 2018-11-21 CN CN201811390404.0A patent/CN109595774B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201233421Y (en) * | 2008-06-27 | 2009-05-06 | 陈小尘 | Adjustable current sensor |
| CN101841901A (en) * | 2009-12-30 | 2010-09-22 | 中国科学院电子学研究所 | Closed-loop automatic gain automatic control device and method for radio-frequency channel |
| CN201965775U (en) * | 2011-01-17 | 2011-09-07 | 安徽状元郎电子科技有限公司 | Handheld learning machine |
| CN104584417A (en) * | 2012-08-13 | 2015-04-29 | 德克萨斯仪器股份有限公司 | Sensorless field-oriented control (FOC) without current sampling for motors |
| CN203232282U (en) * | 2013-04-28 | 2013-10-09 | 济南大学 | Multipath data acquisition system applied for laser array sensor |
| CN204244534U (en) * | 2014-12-08 | 2015-04-01 | 江苏建筑职业技术学院 | Campus illuminating energy-saving control system |
| CN104748313A (en) * | 2015-03-31 | 2015-07-01 | 广东美的制冷设备有限公司 | Air conditioner and temperature sampling device used for air conditioner |
| CN207677588U (en) * | 2017-12-27 | 2018-07-31 | 深圳市展业电机有限公司 | A kind of miniature brushless direct-current motor of built-in controller |
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