CN104111382A - Capacitance detection method and device for capacitor - Google Patents

Capacitance detection method and device for capacitor Download PDF

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Publication number
CN104111382A
CN104111382A CN201410325214.6A CN201410325214A CN104111382A CN 104111382 A CN104111382 A CN 104111382A CN 201410325214 A CN201410325214 A CN 201410325214A CN 104111382 A CN104111382 A CN 104111382A
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China
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capacitance
detected value
detection
electric capacity
offset
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CN201410325214.6A
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Chinese (zh)
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CN104111382B (en
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章根林
余霄
张睿夫
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华为技术有限公司
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Abstract

The invention discloses a capacitance detection method and device for a capacitor. The method and the device are used for detecting the capacitance of a capacitor in a power module of a power receiving device in a work process of the power receiving device and the method and device are capable of ensuring stand-by power supply reliability of the power receiving device and capacitance detection accuracy. The capacitance detection method for the capacitor includes the following steps: in a work process of the power receiving device, a rapid capacitance detection method is adopted to detect the capacitance of the capacitor so that a specified detection value is obtained; and according to the specified detection value and a detection compensation value, the capacitance of the capacitor is determined, wherein the detection compensation value is determined according to a first detection value and a second detection value in advance and the first detection value is a detection value which is obtained when an accurate capacitance detection method is adopted to detect the capacitance of the capacitor and the second detection value is a detection value which is obtained when the rapid capacitance detection method is adopted to detect the capacitance of the capacitor.

Description

A kind of capacitance detection method and device of electric capacity

Technical field

The present invention relates to detection technique field, relate in particular to a kind of capacitance detection method and device of electric capacity.

Background technology

Storage capacitor all can be set as standby electric module at present a lot of power receiving equipments, for example, in solid state hard disc (Solid State Disk, SSD).And along with the increase of service time, the capacitance of electric capacity can reduce gradually, the electric weight that electric capacity can be stored is gradually less, may cause electric capacity cannot meet the demand of power receiving equipment stand-by power supply, therefore, need to carry out periodicity to the capacitance of electric capacity and detect.

The capacitance detection method of existing a kind of electric capacity is accurate capacitance detection method, in accurate capacitance detection method, electric capacity is carried out to deep discharge, according to the capacitance voltage before and after deep discharge, deep discharge duration and and electric capacity form the discharge resistance resistance of discharge loop, can accurately determine the capacitance of electric capacity.But, adopt accurate capacitance detection method, due to needs electric capacity deep discharge, the electric weight of capacitance stores can drop to below the required electric weight of the normal work of power receiving equipment, can cause the stand-by power supply reliability of power receiving equipment to reduce, and has certain risk.

The capacitance detection method of existing another kind of electric capacity is quick capacitance detection method, in quick capacitance detection method, electric capacity is carried out to shallow degree electric discharge, according to the capacitance voltage before and after the electric discharge of shallow degree, shallow degree electric discharge duration and and electric capacity form the discharge resistance resistance of discharge loop, determine the capacitance of electric capacity.Although adopt quick capacitance detection method, the electric weight of capacitance stores can not drop to below the required electric weight of the normal work of power receiving equipment,, adopt quick capacitance detection method can not ensure the accuracy that capacitance detects.

Summary of the invention

The embodiment of the present invention provides a kind of capacitance detection method and device of electric capacity, can take into account stand-by power supply reliability and the capacitance accuracy in detection of power receiving equipment.

First aspect, provides a kind of capacitance detection method of electric capacity, for the process of power receiving equipment work to the standby electric module of described power receiving equipment in the capacitance of electric capacity detect, comprising:

In the process of described power receiving equipment work, adopt quick capacitance detection method to detect the capacitance of described electric capacity, obtain specifying detected value;

Determine the capacitance of described electric capacity according to described appointment detected value and detection offset; Wherein, described detection offset is to determine according to the first detected value and the second detected value in advance, described the first detected value is to adopt accurate capacitance detection method the capacitance of described electric capacity to be detected to the detected value obtaining, and described the second detected value is to adopt quick capacitance detection method the capacitance of described electric capacity to be detected to the detected value obtaining.

In conjunction with first aspect, in the possible implementation of the first, before the quick capacitance detection method of described employing detects the capacitance of described electric capacity, also comprise:

Judge whether to upgrade described detection offset according to default update condition;

In the time of definite need to renewal described detection offset, adopt accurate capacitance detection method to detect and obtain described the first detected value the capacitance of described electric capacity, adopt quick capacitance detection method to detect and obtain described the second detected value the capacitance of described electric capacity; Obtain described detection offset according to described the first detected value and described the second detected value.

In conjunction with the possible implementation of the first of first aspect, in the possible implementation of the second, the default update condition of described basis judges whether to upgrade described detection offset, comprising:

Judge whether current time meets default updated time;

In the time that definite current time meets default updated time, determine and need to upgrade described detection offset.

In conjunction with the possible implementation of the first of first aspect, in the third possible implementation, the default update condition of described basis judges whether to upgrade described detection offset, comprising:

Whether the capacitance that judges the last described electric capacity of determining meets default update condition;

When the capacitance of the described electric capacity of once determining on determining meets default update condition, determine and need to upgrade described detection offset.

In conjunction with the possible implementation of the first of first aspect, the possible implementation of the second of first aspect, or the third possible implementation of first aspect, in the 4th kind of possible implementation, describedly obtain described detection offset according to described the first detected value and described the second detected value, comprising:

Obtain described detection offset according to the difference of described the first detected value and described the second detected value.

Second aspect, provides a kind of capacitance pick-up unit of electric capacity, for the process of power receiving equipment work to the standby electric module of described power receiving equipment in the capacitance of electric capacity detect, comprising:

Detecting unit, for the process in described power receiving equipment work, adopts quick capacitance detection method to detect the capacitance of described electric capacity, obtains specifying detected value;

Determining unit, for determining the capacitance of described electric capacity according to described appointment detected value and detection offset; Wherein, described detection offset is to determine according to the first detected value and the second detected value in advance, described the first detected value is to adopt accurate capacitance detection method the capacitance of described electric capacity to be detected to the detected value obtaining, and described the second detected value is to adopt quick capacitance detection method the capacitance of described electric capacity to be detected to the detected value obtaining.

In conjunction with second aspect, in the possible implementation of the first, also comprise updating block, before the capacitance of described electric capacity being detected in the quick capacitance detection method of described employing, judge whether to upgrade described detection offset according to default update condition; In the time of definite need to renewal described detection offset, adopt accurate capacitance detection method to detect and obtain described the first detected value the capacitance of described electric capacity, adopt quick capacitance detection method to detect and obtain described the second detected value the capacitance of described electric capacity; Obtain described detection offset according to described the first detected value and described the second detected value.

In conjunction with the possible implementation of the first of second aspect, in the possible implementation of the second, described updating block, for judging whether current time meets default updated time; In the time that definite current time meets default updated time, determine and need to upgrade described detection offset.

In conjunction with the possible implementation of the first of second aspect, in the third possible implementation, whether described updating block, meet default update condition for the capacitance that judges the last described electric capacity of determining; When the capacitance of the described electric capacity of once determining on determining meets default update condition, determine and need to upgrade described detection offset.

In conjunction with the possible implementation of the first of second aspect, the possible implementation of the second of second aspect, or the third possible implementation of second aspect, in the 4th kind of possible implementation, described updating block, for obtaining described detection offset according to the difference of described the first detected value and described the second detected value.

The capacitance detection method of the electric capacity providing according to first aspect, the capacitance pick-up unit of the electric capacity that second aspect provides, determine detection offset according to adopting accurate capacitance detection method the capacitance of electric capacity to be detected to the detected value obtaining and adopt quick capacitance detection method to detect to the capacitance of electric capacity the detected value obtaining in advance, in the process of power receiving equipment work, only need to adopt quick capacitance detection method to detect the capacitance of electric capacity, determine again the capacitance of electric capacity according to the detected value obtaining and detection offset, not needing each capacitance to detect all adopts accurate capacitance detection method to carry out electric capacity deep discharge, just can make the accurate capacitance detection method of the approaching employing of capacitance of definite electric capacity the capacitance of electric capacity be detected to the detected value obtaining, in the accuracy while that has ensured that capacitance detects, also ensured the stand-by power supply reliability of power receiving equipment.

Brief description of the drawings

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, the accompanying drawing in the following describes is only some embodiments of the present invention.

The process flow diagram of the capacitance detection method of the electric capacity that Fig. 1 provides for the embodiment of the present invention;

The detail flowchart of the capacitance detection method of the electric capacity that Fig. 2 provides for the embodiment of the present invention;

The structural representation of the capacitance pick-up unit of the electric capacity that Fig. 3 provides for the embodiment of the present invention;

The structural representation of the capacitance checkout equipment of the electric capacity that Fig. 4 provides for the embodiment of the present invention.

Embodiment

In order to make those skilled in the art person understand better the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiment.

The embodiment of the present invention provides a kind of capacitance detection method of electric capacity, for the process of power receiving equipment work to the standby electric module of this power receiving equipment in the capacitance of electric capacity detect, as shown in Figure 1, can comprise the steps:

Step 101, in the process of power receiving equipment work, adopt quick capacitance detection method to detect the capacitance of electric capacity, obtain specifying detected value;

Step 102, according to this appointment detected value with detect offset and determine the capacitance of this electric capacity; Wherein, this detection offset is to determine according to the first detected value and the second detected value in advance, this first detected value is to adopt accurate capacitance detection method the capacitance of this electric capacity to be detected to the detected value obtaining, and this second detected value is to adopt quick capacitance detection method the capacitance of this electric capacity to be detected to the detected value obtaining.

Visible, the capacitance detection method of the electric capacity that the embodiment of the present invention provides, accurate capacitance detection method and quick capacitance detection method are combined, the stand-by power supply reliability that has improved power receiving equipment than the detection scheme that only adopts accurate capacitance detection method, has improved capacitance accuracy in detection than the detection scheme that only adopts quick capacitance detection method.

Preferably, before the quick capacitance detection method of employing detects the capacitance of this electric capacity, also comprise: judge whether to upgrade detecting offset according to default update condition; In the time of definite need to renewal this detection offset, adopt accurate capacitance detection method to detect and obtain the first detected value the capacitance of this electric capacity, adopt quick capacitance detection method to detect and obtain the second detected value the capacitance of this electric capacity; Obtain this detection offset according to this first detected value and this second detected value.

Concrete, can obtain this detection offset according to the difference of this first detected value and this second detected value, this detection offset is the difference of this first detected value and this second detected value.

In the time of definite need to renewal for the second time this detection offset, adopt accurate capacitance detection method to detect and obtain the 3rd detected value the capacitance of this electric capacity, adopt quick capacitance detection method to detect and obtain the 4th detected value the capacitance of this electric capacity; Obtain this detection offset according to the 3rd detected value and the 4th detected value.

Concrete, can obtain this detection offset according to the difference of the 3rd detected value and the 4th detected value, the detection offset after upgrading is for the second time the difference of the 3rd detected value and the 4th detected value.

The like, can also upgrade for the third time, upgrade for the 4th time detecting offset ..., perform step 102 at every turn, while determining the capacitance of electric capacity according to appointment detected value with detection offset, all adopt up-to-date detection offset.

Further, in the time of definite need to renewal this detection offset, the capacitance that can directly determine this electric capacity is to adopt accurate capacitance detection method the capacitance of this electric capacity to be detected to the detected value obtaining in the process of upgrading detection offset.

By to the continuous renewal that detects offset, can ensure to detect the accuracy of offset, therefore can further ensure capacitance accuracy in detection.

In the present invention's one specific embodiment, judge whether to upgrade this detection offset according to default update condition, can comprise: judge whether current time meets default updated time; In the time that definite current time meets default updated time, determine and need to upgrade this detection offset.For example, can preset a update cycle, the employing update cycle upgrades and detects offset, now judges whether current time meets default updated time and be specially: judge whether current time arrives the moment that adopts update cycle renewal detection offset; In the time determining that current time arrives the moment that adopts update cycle renewal detection offset, determine and need to upgrade this detection offset.

In another specific embodiment of the present invention, judge whether to upgrade this detection offset according to default update condition, can comprise: whether the capacitance that judges last this electric capacity of determining meets default update condition; When the capacitance of this electric capacity of once determining on determining meets default update condition, determine and need to upgrade this detection offset.For example, can preset when the capacitance of last definite electric capacity be down to electric capacity initial capacitance 90%, 80%, 70%, upgrade when 60%...... and detect offset, whether the capacitance that now, judges last this electric capacity of determining meets default update condition is specially: the capacitance that judge last this electric capacity of determining whether reduced than the capacitance of this definite electric capacity of upper last time this electric capacity initial capacitance 10%; The capacitance of this electric capacity of once determining on determining than on the capacitance of this electric capacity once determined reduced this electric capacity initial capacitance 10% time, determine and need to upgrade this detection offset.

Above-mentioned default update condition is only example, is not intended to limit the present invention.

Preferably, need to, to detecting before offset upgrade, can also comprise and determine that current time has arrived the capacitance moment of Detection capacitance, can avoid detecting the unnecessary renewal of offset judging whether according to default update condition.Preferably, also can preset the capacitance of a sense cycle Detection capacitance, and this sense cycle is less than the above-mentioned update cycle.

Below in conjunction with accompanying drawing, be specially SSD as example taking power receiving equipment, the capacitance detection method of electric capacity provided by the invention is described in detail.

SSD mainly contains two kinds of patterns in the time of data writing: tracing pattern and write-back mode.When SSD adopts tracing pattern data writing, the controller of SSD directly writes data in flash memory (Flash) array of SSD; When SSD adopts write-back mode data writing, the controller of SSD first writes data synchronous DRAM (the Synchronous Dynamic Random Access Memory of SSD, SDRAM) in, in the time that the controller of SSD is idle, then the data in SDRAM are write in Flash array.

Because SSD adopts write-back mode data writing performance more excellent, so be the write performance that ensures SSD in practical application, conventionally can adopt write-back mode.But because SDRAM has the characteristic of power-off loss of data, therefore storage capacitor just need to be set as standby electric module in SSD, in the time of the power-off of SSD external power source, can, for SSD power supply certain time length, the controller of SSD can be write the data in SDRAM in Flash array.

In the SSD that Fig. 2 provides for the embodiment of the present invention, the detail flowchart of the capacitance detection method of electric capacity, comprises the steps:

Step 201, SSD power on, and postpone its cut-in time.

During this period, SSD is not issued to the service order that reads and writes data.

Step 202, adopt accurate capacitance detection method to detect the capacitance of electric capacity, obtain detected value C1; And adopt quick capacitance detection method to detect the capacitance of electric capacity, obtain detected value C2.

After adopting accurate capacitance detection method to detect the capacitance of electric capacity, SSD can start working, and SSD adopts write-back mode data writing.

In this step 202, adopt the capacitance detected value C1 of the electric capacity that accurate capacitance detection method obtains comparatively accurate, adopt the capacitance detected value C2 of the electric capacity that quick capacitance detection method obtains comparatively inaccurate.

Therefore, now can determine that at the capacitance C of the electric capacity when initial that powers on be detected value C1.

Step 203, according to the detected value C1 obtaining in step 202 and detected value C2, determine and detect offset Δ C.

In the present embodiment, detecting offset is specifically as follows and adopts accurate capacitance detection method to detect to the capacitance of electric capacity the detected value obtaining to deduct the quick capacitance detection method of employing and the capacitance of electric capacity is detected to the difference of the detected value obtaining, i.e. Δ C=C1-C2; In other embodiments, detect offset and specifically also can deduct the difference that adopts accurate capacitance detection method the capacitance of electric capacity to be detected to the detected value obtaining, i.e. Δ C=C2-C1 for adopting quick capacitance detection method to detect to the capacitance of electric capacity the detected value obtaining.The present invention does not limit this.

Determine and detect after offset Δ C, this detection offset Δ C can be stored in SSD to non-volatile storage space for subsequent use.

Step 204, judge whether current time arrives the capacitance moment that adopts default sense cycle Detection capacitance.

If current time has arrived the capacitance moment that adopts default sense cycle Detection capacitance, enter step 205; If current time does not arrive the capacitance moment that adopts default sense cycle Detection capacitance, this step 204 is carried out in circulation, carries out cycle criterion.

Above-mentioned default sense cycle can be set reliability requirement according to SSD, and in the present embodiment, default sense cycle is specifically as follows 1 month.

Step 205, judge whether current time arrives and adopt the default update cycle to upgrade the moment of detecting offset, wherein, default sense cycle is less than the default update cycle.

Adopt the default update cycle to upgrade the moment of detecting offset if current time has arrived, enter step 206; Adopt the default update cycle to upgrade the moment of detecting offset if current time does not arrive, enter step 208.

The above-mentioned default update cycle also can be set reliability requirement according to SSD, and in the present embodiment, the default update cycle is specifically as follows 1 year.

Step 206, adopt accurate capacitance detection method to detect the capacitance of electric capacity, obtain detected value C1'; And adopt quick capacitance detection method to detect the capacitance of electric capacity, obtain detected value C2'.

And, now can determine that the capacitance of this electric capacity detects, the capacitance C of electric capacity is detected value C1'.

For avoiding loss of data, adopting accurate capacitance detection method to detect the capacitance of electric capacity, can switch SSD and adopt tracing pattern data writing, after waiting to adopt accurate capacitance detection method to detect the capacitance of electric capacity, then switch SSD recovery employing write-back mode data writing.

Step 207, according to the detected value C1' obtaining in step 206 and detected value C2', upgrade and detect offset Δ C, and return to step 204.

If Δ C=C1-C2 in step 203 upgrades Δ C=C1'-C2' in this step 207; If Δ C=C2-C1 in step 203 upgrades Δ C=C2'-C1' in this step 207.

Detection offset after renewal is replaced and is stored in the former detection offset in non-volatile storage space in SSD.

Step 208, adopt quick capacitance detection method to detect the capacitance of electric capacity, obtain detected value C2 ".

Step 209, according to detected value C2, " and up-to-date detection offset Δ C determines the capacitance C of electric capacity.

If Δ C=C1-C2 in step 203, in this step 209 capacitance of electric capacity be specify detected value and detect offset and value, i.e. C=C2 "+Δ C; If Δ C=C2-C1 in step 203, in this step 209, the capacitance of electric capacity is to specify detected value to deduct the difference that detects offset, i.e. C=C2 " Δ C.

Determining after the capacitance of electric capacity, can also compare with default capacitance, this default capacitance is the capacitance that can meet the electric capacity of the demand of power receiving equipment stand-by power supply, in the present embodiment, this default capacitance is in the time of the power-off of SSD external power source, can, for SSD power supply certain time length, make the controller of SSD the data in SDRAM can be write to the capacitance of the electric capacity in Flash array.

Concrete, in the time that the capacitance of the electric capacity of determining is less than this default capacitance, can process by set strategy, for example switch SSD and adopt tracing pattern data writing, send alarm etc.

Visible, the capacitance detection method of the electric capacity that the embodiment of the present invention provides, in the process of SSD work, in the time not needing detection offset to upgrade, only need to adopt quick capacitance detection method to detect the capacitance of electric capacity, determine again the capacitance of electric capacity according to the detected value obtaining and detection offset, can make the accurate capacitance detection method of the approaching employing of capacitance of definite electric capacity the capacitance of electric capacity be detected to the detected value obtaining; In the time that needs upgrade detecting offset, upgrade and detect offset, for subsequent detection, and can directly determine that the capacitance of electric capacity is to adopt accurate capacitance detection method the capacitance of this electric capacity to be detected to the detected value obtaining in the process of upgrading detection offset.Obviously, the capacitance detection method of the electric capacity that the employing embodiment of the present invention provides, has taken into account stand-by power supply reliability and capacitance accuracy in detection, has ensured the write performance of SSD.

Based on same inventive concept, the capacitance detection method of the electric capacity providing according to the above embodiment of the present invention, correspondingly, the embodiment of the present invention also provides a kind of capacitance pick-up unit of electric capacity, for the process of power receiving equipment work to the standby electric module of this power receiving equipment in the capacitance of electric capacity detect, its structural representation as shown in Figure 3, specifically comprises:

Detecting unit 301, for the process in power receiving equipment work, adopts quick capacitance detection method to detect the capacitance of electric capacity, obtains specifying detected value;

Determining unit 302, for determining the capacitance of this electric capacity according to this appointment detected value and detection offset; Wherein, this detection offset is to determine according to the first detected value and the second detected value in advance, this first detected value is to adopt accurate capacitance detection method the capacitance of this electric capacity to be detected to the detected value obtaining, and this second detected value is to adopt quick capacitance detection method the capacitance of this electric capacity to be detected to the detected value obtaining.

Preferably, the capacitance pick-up unit of this electric capacity also comprises updating block 303, before the capacitance of this electric capacity being detected in the quick capacitance detection method of this employing, judges whether to upgrade this detection offset according to default update condition; In the time of definite need to renewal this detection offset, adopt accurate capacitance detection method to detect and obtain this first detected value the capacitance of this electric capacity, adopt quick capacitance detection method to detect and obtain this second detected value the capacitance of this electric capacity; Obtain this detection offset according to this first detected value and this second detected value.

Further, updating block 303, for judging whether current time meets default updated time; In the time that definite current time meets default updated time, determine and need to upgrade this detection offset.

Further, whether updating block 303, meet default update condition for the capacitance that judges last this electric capacity of determining; When the capacitance of this electric capacity of once determining on determining meets default update condition, determine and need to upgrade this detection offset.

Further, updating block 303, for obtaining this detection offset according to the difference of this first detected value and this second detected value.

The function of above-mentioned each module can, corresponding to the respective handling step in flow process shown in Fig. 1 or Fig. 2, not repeat them here.

Based on same inventive concept, the embodiment of the present invention also provides a kind of capacitance checkout equipment of electric capacity, for the process of power receiving equipment work to the standby electric module of this power receiving equipment in the capacitance of electric capacity detect, its structural representation as shown in Figure 4, comprises storer 401, processor 402 and communication bus 400.

Communication bus 400 is for the connection communication between equipment each several part.

Storer 401 may comprise high-speed random access memory (Random Access Memory, RAM), also may also comprise non-unsettled storer (non-volatile memory), for example magnetic disk memory.

Processor 402 for example, for the executable module of execute store 401 storages, computer program.

In some embodiments, storer 401 has been stored program 4011, and program 4011 can be carried out by processor 402, and program 4011 comprises: in the process of power receiving equipment work, adopt quick capacitance detection method to detect the capacitance of electric capacity, obtain specifying detected value; Determine the capacitance of this electric capacity according to this appointment detected value and detection offset; Wherein, this detection offset is to determine according to the first detected value and the second detected value in advance, this first detected value is to adopt accurate capacitance detection method the capacitance of this electric capacity to be detected to the detected value obtaining, and this second detected value is to adopt quick capacitance detection method the capacitance of this electric capacity to be detected to the detected value obtaining.

In some embodiments, program 4011 also comprises: before the quick capacitance detection method of this employing detects the capacitance of this electric capacity, judge whether to upgrade this detection offset according to default update condition; In the time of definite need to renewal this detection offset, adopt accurate capacitance detection method to detect and obtain this first detected value the capacitance of this electric capacity, adopt quick capacitance detection method to detect and obtain this second detected value the capacitance of this electric capacity; Obtain this detection offset according to this first detected value and this second detected value.

In some embodiments, program 4011 comprises: judge whether current time meets default updated time; In the time that definite current time meets default updated time, determine and need to upgrade this detection offset.

In some embodiments, program 4011 comprises: whether the capacitance that judges last this electric capacity of determining meets default update condition; When the capacitance of this electric capacity of once determining on determining meets default update condition, determine and need to upgrade this detection offset.

In some embodiments, program 4011 comprises: obtain this detection offset according to the difference of this first detected value and this second detected value.

In sum, the scheme that adopts the embodiment of the present invention to provide, combines accurate capacitance detection method and quick capacitance detection method, has taken into account stand-by power supply reliability and the capacitance accuracy in detection of power receiving equipment.

Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) that wherein include computer usable program code.

The present invention is with reference to describing according to process flow diagram and/or the block scheme of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or the combination of square frame.Can provide these computer program instructions to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computing machine or other programmable data processing device produces the device for realizing the function of specifying at flow process of process flow diagram or multiple flow process and/or square frame of block scheme or multiple square frame.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of process flow diagram or multiple flow process and/or square frame of block scheme or multiple square frame.

These computer program instructions also can be loaded in computing machine or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computing machine or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of process flow diagram or multiple flow process and/or square frame of block scheme or multiple square frame on computing machine or other programmable devices.

Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the embodiment of the present invention the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (10)

1. a capacitance detection method for electric capacity, for the process of power receiving equipment work to the standby electric module of described power receiving equipment in the capacitance of electric capacity detect, it is characterized in that, comprising:
In the process of described power receiving equipment work, adopt quick capacitance detection method to detect the capacitance of described electric capacity, obtain specifying detected value;
Determine the capacitance of described electric capacity according to described appointment detected value and detection offset; Wherein, described detection offset is to determine according to the first detected value and the second detected value in advance, described the first detected value is to adopt accurate capacitance detection method the capacitance of described electric capacity to be detected to the detected value obtaining, and described the second detected value is to adopt quick capacitance detection method the capacitance of described electric capacity to be detected to the detected value obtaining.
2. method according to claim 1, is characterized in that, before the quick capacitance detection method of described employing detects the capacitance of described electric capacity, also comprises:
Judge whether to upgrade described detection offset according to default update condition;
In the time of definite need to renewal described detection offset, adopt accurate capacitance detection method to detect and obtain described the first detected value the capacitance of described electric capacity, adopt quick capacitance detection method to detect and obtain described the second detected value the capacitance of described electric capacity; Obtain described detection offset according to described the first detected value and described the second detected value.
3. method according to claim 2, is characterized in that, the default update condition of described basis judges whether to upgrade described detection offset, comprising:
Judge whether current time meets default updated time;
In the time that definite current time meets default updated time, determine and need to upgrade described detection offset.
4. method according to claim 2, is characterized in that, the default update condition of described basis judges whether to upgrade described detection offset, comprising:
Whether the capacitance that judges the last described electric capacity of determining meets default update condition;
When the capacitance of the described electric capacity of once determining on determining meets default update condition, determine and need to upgrade described detection offset.
5. according to the arbitrary described method of claim 2-4, it is characterized in that, describedly obtain described detection offset according to described the first detected value and described the second detected value, comprising:
Obtain described detection offset according to the difference of described the first detected value and described the second detected value.
6. a capacitance pick-up unit for electric capacity, for the process of power receiving equipment work to the standby electric module of described power receiving equipment in the capacitance of electric capacity detect, it is characterized in that, comprising:
Detecting unit, for the process in described power receiving equipment work, adopts quick capacitance detection method to detect the capacitance of described electric capacity, obtains specifying detected value;
Determining unit, for determining the capacitance of described electric capacity according to described appointment detected value and detection offset; Wherein, described detection offset is to determine according to the first detected value and the second detected value in advance, described the first detected value is to adopt accurate capacitance detection method the capacitance of described electric capacity to be detected to the detected value obtaining, and described the second detected value is to adopt quick capacitance detection method the capacitance of described electric capacity to be detected to the detected value obtaining.
7. device according to claim 6, it is characterized in that, also comprise updating block, before the capacitance of described electric capacity being detected in the quick capacitance detection method of described employing, judge whether to upgrade described detection offset according to default update condition; In the time of definite need to renewal described detection offset, adopt accurate capacitance detection method to detect and obtain described the first detected value the capacitance of described electric capacity, adopt quick capacitance detection method to detect and obtain described the second detected value the capacitance of described electric capacity; Obtain described detection offset according to described the first detected value and described the second detected value.
8. device according to claim 7, is characterized in that, described updating block, for judging whether current time meets default updated time; In the time that definite current time meets default updated time, determine and need to upgrade described detection offset.
9. device according to claim 7, is characterized in that, whether described updating block meets default update condition for the capacitance that judges the last described electric capacity of determining; When the capacitance of the described electric capacity of once determining on determining meets default update condition, determine and need to upgrade described detection offset.
10. according to the arbitrary described device of claim 7-9, it is characterized in that, described updating block, for obtaining described detection offset according to the difference of described the first detected value and described the second detected value.
CN201410325214.6A 2014-07-09 2014-07-09 A kind of capacitance detection method and device of electric capacity CN104111382B (en)

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