CN107870298A - Circuit parameter detection circuit, method and the electric energy meter of a kind of bleeder circuit - Google Patents
Circuit parameter detection circuit, method and the electric energy meter of a kind of bleeder circuit Download PDFInfo
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- CN107870298A CN107870298A CN201711222813.5A CN201711222813A CN107870298A CN 107870298 A CN107870298 A CN 107870298A CN 201711222813 A CN201711222813 A CN 201711222813A CN 107870298 A CN107870298 A CN 107870298A
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- circuit
- divider
- bleeder circuit
- voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
- G01R31/2843—In-circuit-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
Abstract
The invention belongs to electric circuit inspection technical field, there is provided circuit parameter detection circuit, method and the electric energy meter of a kind of bleeder circuit, including main bleeder circuit, it is corresponding with main bleeder circuit at least one from bleeder circuit；Main bleeder circuit includes main divider, and first voltage measurement module is parallel with main divider；Include the switch module from divider and for changing from bleeder circuit state corresponding with main divider from bleeder circuit；Second voltage measurement module is parallel with from divider；Second voltage measurement module is used in the voltage strength of first voltage measurement module detection and the inconsistent voltage strength of second voltage measurement module detection, detection it is described from bleeder circuit in different conditions from the voltage strength variable quantity on divider, determined according to voltage strength variable quantity whether abnormal from bleeder circuit or main bleeder circuit.Circuit parameter variations caused by being capable of detecting when divider failure by the present invention, the problem of the measurement result inaccuracy of measuring circuit.
Description
Technical field
The invention belongs to electric circuit inspection technical field, more particularly to a kind of circuit parameter detection circuit of bleeder circuit, side
Method and electric energy meter.
Background technology
In voltage measurement, general voltage measurement module is restricted to the size of input voltage, it is therefore desirable to passes through resistance
Device partial pressure is by within voltage attenuation safe range to be measured.
And in long-term use, the various situations such as damage, change in resistance occur in the resistor for partial pressure, cause to detect
Voltage can not truly reflect metered voltage.
The content of the invention
In view of this, the embodiments of the invention provide a kind of circuit parameter of bleeder circuit detection circuit, method and electric energy
Table, to solve in the prior art, measuring apparatus can not detect that damage occurs in the resistor of bleeder circuit, change in resistance causes electricity
Road parameter changes, the problem of so as to cause the measurement inaccuracy of measuring apparatus.
The first aspect of the embodiment of the present invention provides a kind of circuit parameter detection circuit of bleeder circuit, including：
Main bleeder circuit；
It is corresponding with main bleeder circuit at least one from bleeder circuit；
Above-mentioned main bleeder circuit and coupled respectively with signal source from bleeder circuit；
The above-mentioned main divider of main bleeder circuit, first voltage measurement module, first voltage measurement are parallel with main divider
Module is used to detect voltage strength on main divider；
It is above-mentioned include from bleeder circuit it is corresponding with main divider from divider, and for changing from bleeder circuit state
Switch module；Second voltage measurement module is parallel with from divider；
Above-mentioned second voltage measurement module is used to survey in the voltage strength and second voltage of the detection of first voltage measurement module
When the voltage strength of amount module detection is inconsistent, detects from bleeder circuit and become in different conditions from the voltage strength on divider
Change amount, determined according to voltage strength variable quantity whether abnormal from bleeder circuit or main bleeder circuit.
The second aspect of the embodiment of the present invention provides a kind of electric circuit inspection chip, and electric circuit inspection chip includes above-mentioned point
The circuit parameter detection circuit of volt circuit, the second divider and the 4th divider are arranged on the inside of electric circuit inspection chip.
The third aspect of the embodiment of the present invention provides a kind of electric energy meter, and electric energy meter includes the circuit of above-mentioned bleeder circuit
Electrical parameter detection circuit.
The fourth aspect of the embodiment of the present invention provides a kind of circuit parameter detection method of bleeder circuit, including：Partial pressure
Circuit includes main bleeder circuit and corresponding with main bleeder circuit from bleeder circuit, above-mentioned main bleeder circuit and above-mentioned from partial pressure electricity
Road couples with signal source respectively；Above-mentioned main bleeder circuit comprises at least main divider, and first voltage survey is parallel with main divider
Measure module；It is above-mentioned to be comprised at least from bleeder circuit corresponding with main divider from divider, the second electricity is parallel with from divider
Press measurement module；Also include being used to change the switch module from bleeder circuit state, the detection method from bleeder circuit
Including,
Voltage strength on above-mentioned main divider is detected by first voltage measurement module；
The above-mentioned voltage strength from divider is detected by second voltage measurement module；
Differ in the voltage strength that the voltage strength of first voltage measurement module detection detects with second voltage measurement module
During cause, by second voltage measurement module detection from bleeder circuit in different conditions from divider voltage strength change
Amount, determined according to voltage strength variable quantity whether abnormal from bleeder circuit or main bleeder circuit.
Existing beneficial effect is the embodiment of the present invention compared with prior art：The embodiment of the present invention passes through with main partial pressure
Circuit and with being detected from two sets of bleeder circuit detection circuits to same signal source, when the detection knot of two sets of detection circuits
During fruit difference, change from the circuit parameter of bleeder circuit and obtain the 3rd testing result, pass through two detections from bleeder circuit
As a result calculate the variable quantity of voltage strength, so as to judge detect circuit measurement it is whether accurate, main bleeder circuit and from point
Whether the circuit parameter of volt circuit changes.Electric circuit inspection precision provided in an embodiment of the present invention is high, can accurately detect
Go out the problem of divider failure causes circuit parameter exception in bleeder circuit.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the circuit parameter detection electrical block diagram for the bleeder circuit that the embodiment of the present invention one provides；
Fig. 2 is the circuit parameter detection electrical block diagram of bleeder circuit when switch module is opened in Fig. 1；
Fig. 3 is the circuit parameter detection electrical block diagram of bleeder circuit when switch module closes in Fig. 1；
Fig. 4 is the circuit parameter detection electrical block diagram for another bleeder circuit that the embodiment of the present invention one provides；
Fig. 5 is the resistance and circuit knot of the capacitance connection as main divider and from divider that the embodiment of the present invention two provides
Composition schematic diagram；
Fig. 6 is the implementation process schematic diagram of the circuit parameter detection method for the bleeder circuit that the embodiment of the present invention five provides.
Embodiment
In describing below, in order to illustrate rather than in order to limit, it is proposed that such as tool of particular system structure, technology etc
Body details, thoroughly to understand the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention can also be realized in the other embodiments of details.In other situations, omit to well-known system, device, electricity
Road and the detailed description of method, in case unnecessary details hinders description of the invention.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Embodiment one
Fig. 1 shows the circuit parameter detection electrical block diagram for the bleeder circuit that first embodiment of the invention provides,
For convenience of description, part related to the present embodiment is illustrate only, details are as follows：
A kind of circuit parameter detection circuit of bleeder circuit, including：
Main bleeder circuit 1；
It is corresponding at least one from bleeder circuit 2 with the main bleeder circuit 1；
The main bleeder circuit 1 and described coupled respectively with signal source 3 from bleeder circuit 2；
The main bleeder circuit 1 includes main divider 11, and first voltage measurement module is parallel with the main divider 11
4, the first voltage measurement module 4 is used to detect voltage strength on the main divider 11；
It is described include from bleeder circuit 2 it is corresponding from divider 21 with the main divider 11, and for described in changing from
The switch module 6 of the state of bleeder circuit 2；It is described that second voltage measurement module 5 is parallel with from divider 21；
The second voltage measurement module 5 is used for the voltage strength and described in the first voltage measurement module 4 detection
When the voltage strength that second voltage measurement module 5 detects is inconsistent, detection it is described from bleeder circuit 2 in different conditions described in from
Voltage strength variable quantity on divider 21, from bleeder circuit 2 or main partial pressure according to determining the voltage strength variable quantity
Whether circuit 1 is abnormal.
Wherein, second voltage measurement module 5 is specifically used for, if detecting, the voltage strength variable quantity is less than threshold value,
It is normal from bleeder circuit 2 described in judging, determine that the main bleeder circuit 1 is abnormal；If detecting, the voltage strength variable quantity is big
In or equal to threshold value, it is determined that described abnormal from bleeder circuit 2.
Preferably, first voltage measurement module 4 and second voltage measurement module 5 are additionally operable to the voltage strength conversion detected
For amplitude and the form of phase, and according to detected by second voltage measurement module 5 under the different conditions of the switch module 6
Voltage strength, calculate the amplitude variable quantity and phase changing capacity of voltage strength.
The first voltage measurement module 4 and second voltage that bleeder circuit 1 and bleeder circuit 2 are used to reduce in access circuit are surveyed
Measure the both end voltage of module 5.
Preferably, main bleeder circuit 1 also includes the first divider 12 and the second divider 13；Also include from bleeder circuit 2
3rd divider 22 and the 4th divider 23；First divider 12, the second divider 13 are connected with main divider 11；3rd partial pressure
Device 22, the 4th divider 23 are connected with described from divider 21；Switch module 6 is connected in parallel on the 4th divider 23.
It is understood that when signal source 3 is voltage source, its output voltage can be DC voltage or fixation
The line voltage of frequency；Main bleeder circuit 1 and from the corresponding relation of bleeder circuit 2, in particular to when dispatching from the factory, main bleeder circuit 1 and from
The circuit parameter of bleeder circuit 2 is identical, especially the setting initial value phase of main divider 11 and the circuit parameter from divider 21
Together, the circuit parameter of circuit can change during follow-up use, but due to being the relation of principal and subordinate, corresponding to the first divider 12
It is exactly the 3rd divider 22, even if the 3rd divider 22 is tampered, resistance value is different from the first divider 12, but during according to dispatching from the factory
Setting value, the resistance or corresponding relation of the two divider.
The circuit specific implementation process that above-described embodiment is provided is as follows：If only needing to carry out normal voltage detecting,
Main bleeder circuit 1 and the first voltage measurement module 4 in parallel with main divider 11 are then only used, by detecting on main divider 11
Voltage strength complete to the voltage detecting of signal source 3.
Whether the accuracy of detection if necessary to detect first voltage measurement module 4 or second voltage measurement module 5 changes, inspection
When whether survey result is accurate, the second voltage measurement module 5 in bleeder circuit 2 is worked by internal switch, read the second electricity
The voltage strength numerical value that pressure measurement module 5 is detected, while read first voltage measurement module 4 in main bleeder circuit 1 and detected
Voltage strength numerical value.When the voltage strength numerical value that two voltage measurement modules are detected is inconsistent, then need to further determine that
The circuit parameter of main bleeder circuit 1 goes wrong or gone wrong from the circuit parameter in bleeder circuit 2, that is, detects from partial pressure electricity
Road 2, from the voltage strength variable quantity on divider 21, is determined from partial pressure described in different conditions according to voltage strength variable quantity
Whether circuit 2 or main bleeder circuit 1 are abnormal.
It is determined that it is to be specially from bleeder circuit 2 or main bleeder circuit 1 abnormal circuit occur：
From bleeder circuit 2, switch module 6 can change the circuit state from bleeder circuit 2.Switch module 6 is to beat
During open state, as shown in Fig. 2 main bleeder circuit 1 is identical with from bleeder circuit 2, the number of two measurement module detections is recorded
Value；
When switch module 6 is closure state, as shown in figure 3, main bleeder circuit 1 differs one the 4th with from bleeder circuit 2
The resistance of transformer 23, now the voltage strength numerical value detected by second voltage measurement module 5 change, record change after
Voltage strength numerical value.Two voltage strength numerical value changes in above-mentioned second voltage measurement module 5 are analyzed, that is, calculate switch module
6 when being in different conditions from the voltage strength variable quantity on divider 21, change according to voltage from the voltage strength on divider 21
Whether the degree of its change of amount analysis exceedes threshold value, if detecting, voltage strength variable quantity is less than threshold value, judges from partial pressure electricity
Circuit parameter in road 2 is normal, so that it is determined that the circuit parameter of main bleeder circuit 1 is abnormal；If detect voltage strength variable quantity
More than or equal to threshold value, it is determined that abnormal from the circuit parameter of bleeder circuit 2.
Due to there was only one in the present embodiment from bleeder circuit, therefore when from the circuit parameter exception of bleeder circuit, nothing
Method determines whether the circuit parameter of the main bleeder circuit is abnormal.But in the present invention from bleeder circuit can also be it is multiple, can
To expect corresponding second voltage measurement module also to be multiple；When detecting that one of them is abnormal from the circuit parameter of bleeder circuit
When, can select it is other above-mentioned circuit parameters detection is carried out from bleeder circuit and second voltage measurement module, reduce from
Bleeder circuit can not detect the whether abnormal situation of main bleeder circuit parameter, improve the circuit parameter detection electricity of above-mentioned bleeder circuit
The accuracy on road.
It should be understood that the above-mentioned voltage strength number as detected by first voltage measurement module 4 and second voltage measurement module 5
Value can be the numerical value that amplitude and phase represent, above-mentioned voltage strength variable quantity can be voltage strength amplitude variable quantity and
Phase changing capacity, and in the present embodiment, divider is resistor, therefore its phase place change is 0, above-mentioned voltage strength change
Amount shows as the amplitude variable quantity of voltage strength.
Exemplarily, when being worked from the second voltage measurement module 5 in bleeder circuit 2, switch module 6 is in open shape
State, now main bleeder circuit 1 is identical with the circuit structure from bleeder circuit 2, but the electricity of first voltage measurement module 4 and second
The voltage strength numerical value that pressure measurement module 5 is detected is different.Thus, it is supposed that the voltage in measured signal source 3 is Vdet；First voltage
The voltage strength numerical value that measurement module 4 detects on main divider 11 is Vdet1；Second voltage measurement module 5 is from partial pressure
The voltage strength numerical value detected on device 21 is Vdet2.
Specifically：If now Vdet1
≠ Vdet2, illustrate to have the detection of bleeder circuit all the way deviation occur.
Make switch module 6 be in closure state, the resistance of the 4th transformer 23 is lacked from the circuit parameter of bleeder circuit 2
Value, second voltage measurement module 5 is now recorded in the voltage strength Vdet3 detected from divider 21, specifically：
Analysis is from bleeder circuit 2 from the voltage strength variable quantity on divider 21：
Wherein changes in amplitude amount is, it is known that Vdet represents the voltage strength of signal source 3；Vdet1 represents first voltage measurement
The voltage strength that module 4 detects on main divider 11；When Vdet2 represents that switch module 6 is opened, second voltage measurement module
5 in the voltage strength detected from divider 21；When Vdet3 represents that switch module 6 closes, second voltage measurement module 5 exists
The voltage strength detected from divider 21；It is understood that above-mentioned voltage strength is in the form of amplitude and phase
Represent, and phase place change is 0.R1 represents the resistance of the first divider 12；R2 represents the resistance of main divider 11；R3 represents second
The resistance of divider 13；R4 represents the resistance of the 3rd divider 22；R5 represents the resistance from divider 21；R6 represents the 4th partial pressure
The resistance of device 23.
Main bleeder circuit 1 in the present embodiment and it is used to reduce the voltage on circuit from bleeder circuit 2.Due to first voltage
What measurement module 4 measured is the component of voltage on main divider 11, therefore the resistance of the first divider 12 will be far longer than main point
The resistance of the divider 13 of depressor 11 and second, it can just make the main both end voltage of divider 11 relatively low, reach preferable antihypertensive effect；Together
Reason, the resistance of the 3rd divider 22 will be far longer than the resistance from the divider 23 of divider 21 and the 4th.In the present embodiment, it is
Facilitate calculating, and consider main bleeder circuit 1 and master slave relation from bleeder circuit 2, set R1=R4=1 × 106Ohm,
R2=R3=R5=R6=1 × 103Ohm.The then value of above-mentioned formulaIt is understood that
It is that above-mentioned resistance is in the numerical value that ideally draws, and inherently there is error when actually resistance produces, therefore
A standard value, the result actually calculated should near standard value in certain threshold range, such as
If the changes in amplitude amount detected by second voltage measurement module 5 is not above-mentioned standard value, or and above-mentioned standard
The deviation of value exceeds threshold value, it is determined that occurs from the circuit parameter of bleeder circuit 2 abnormal；If the institute of second voltage measurement module 5
The changes in amplitude amount detected is above-mentioned standard value, or and above-mentioned standard value deviation without departing from threshold value, then judge from partial pressure
The circuit parameter of circuit 2 is normal, so that it is determined that exception occurs in the circuit parameter of main bleeder circuit 1.
In one embodiment, the first above-mentioned divider 12 and the 3rd divider 22 can be used as same divider string
In circuit, particular circuit configurations are as shown in Figure 4 for connection.
In the above-described embodiments, there is provided a kind of circuit parameter of bleeder circuit detection circuit, by main bleeder circuit and
Same signal source is detected from bleeder circuit and first voltage measurement module and second voltage measurement module, it can be found that
The measuring error of first voltage measurement module or second voltage measurement module.Further, second voltage measurement module is passed through
Detection from bleeder circuit in different conditions from the voltage strength variable quantity on divider, it may be determined that cause the event of measuring error
Barrier source.By the present embodiment, can not only detect that the divider of bleeder circuit breaks down causes circuit parameter to change,
So as to caused by the problem of the measuring accuracy inaccuracy of measuring circuit, additionally it is possible to the circuit portion that positioning circuit parameter changes
Point.
Embodiment two
Alternatively, main divider 11, the first divider 12, the second divider 13, from divider 21, the and of the 3rd divider 22
4th divider 23 can be resistance, inductance, resistance and the circuit of inductance connection, the circuit of resistance and capacitance connection or inductance with
The circuit of capacitance connection.
First voltage measurement module 4, second voltage measurement module 5, signal source 3, switch module 6 etc. do not carry in the present embodiment
And circuit part it is identical with embodiment one, do not repeating.
Exemplarily, Fig. 5 gives resistance with capacitance connection as main divider 11 and the circuit structure from divider 21
Figure.
Main divider 11 and from the circuit that divider 21 is resistance and capacitance connection, as shown in figure 5, in main divider 11
Resistance both ends be connected an electric capacity respectively to ground with the both ends of the resistance from divider 21.The then He of first voltage measurement module 4
The voltage strength detected in second voltage measurement module 5 can then be converted to the form of amplitude and phase, in embodiment one
The voltage strength variable quantity that two voltage measurement modules 5 are calculated is then the amplitude variable quantity and phase changing capacity of voltage strength.
Embodiment three
Third embodiment of the invention provides a kind of electric circuit inspection chip, including any bleeder circuit in above-described embodiment
Circuit parameter detects circuit, and second divider 13 and the 4th divider 23 are arranged on the interior of the electric circuit inspection chip
Portion.
In electric circuit inspection chip provided in an embodiment of the present invention, because what second voltage measurement module 5 tested and analyzed is
Under the different conditions of switch module 6, from the circuit parameter of bleeder circuit 2, and 6 different conditions of switch module generally refer to the 4th
The presence or absence of resistance of divider 23；Simultaneously because main bleeder circuit 1 and the master slave relation from bleeder circuit 2, the second divider 13
Resistance is corresponding with the resistance of the 4th divider 23, therefore in order to avoid 23 yuan of the second divider 13 and the 4th divider as far as possible
Component parameters are caused to change by during various ectocines, the present embodiment is by the second divider 13 and the 4th divider 23
Chip internal is integrated in, the chance directly contacted with external environment is reduced, reduces the possibility influenceed by external environmental condition.
Example IV
Fourth embodiment of the invention provides a kind of electric energy meter, and the electric energy meter can include appointing in above-described embodiment one to three
Anticipate a kind of bleeder circuit circuit parameter detection circuit.
By taking the circuit parameter detection electrical block diagram for the bleeder circuit that embodiment one provides as an example, as shown in figure 1, letter
Number source 3 is voltage source to be measured, main bleeder circuit 1, from bleeder circuit 2, first voltage measurement module 4, second voltage measurement module
5th, switch module 6 is the measurement apparatus in electric energy meter.During normal measurement, from the second voltage measurement module 5 in bleeder circuit 2
Do not work, other circuit parts, which are still accessed in circuit, to work, and first voltage measurement module 4 detects the voltage on main divider 11.
When needing the circuit parameter for measuring main bleeder circuit 1 whether to change, the work of second voltage measurement module 5 is made by internal switch
Make, read the voltage strength numerical value on first voltage measurement module 4 and second voltage measurement module 5, the institute of two measurement modules
During the numerical value difference of detection, closure switch component 6, second voltage strength numerical value of second voltage measurement module 5 is read, is calculated
The amplitude variable quantity of the voltage strength variable quantity, i.e. voltage strength of two voltage strength numerical value in second voltage measurement module 5
And phase changing capacity, judge whether this changes in amplitude amount has deviation, so as to judge whether there is change from the circuit parameter of bleeder circuit 2
Change, finally infer whether the circuit parameter of main bleeder circuit 1 changes.
In the above-described embodiments, there is provided a kind of electric energy meter, the circuit parameter of bleeder circuit inside electric energy meter can be detected
Occur it is abnormal, the problem of so as to cause the metering inaccuracy of power consumption.
Embodiment five
Accordingly, fifth embodiment of the invention also provides a kind of circuit parameter detection method of bleeder circuit, such as Fig. 6 institutes
Show：
The bleeder circuit includes main bleeder circuit and corresponding with the main bleeder circuit at least one from bleeder circuit,
The main bleeder circuit and described coupled respectively with signal source from bleeder circuit；The main bleeder circuit comprises at least main partial pressure
Device, first voltage measurement module is parallel with the main divider；It is described to be comprised at least and the main divider from bleeder circuit
It is corresponding from divider, it is described that second voltage measurement module is parallel with from divider；It is described also to include being used for from bleeder circuit
Change the switch module from bleeder circuit state；
The circuit parameter detection method of the bleeder circuit includes：
S601：Voltage strength on the main divider is detected by the first voltage measurement module.
S602：It is described from the voltage strength on divider by second voltage measurement module detection.
S603：Voltage strength and second voltage measurement module detection in first voltage measurement module detection
When voltage strength is inconsistent, by the second voltage measurement module detect it is described from bleeder circuit in different conditions described in from
Voltage strength variable quantity on divider, from bleeder circuit or main bleeder circuit according to determining the voltage strength variable quantity
It is whether abnormal.
In above-mentioned steps S603, whether voltage strength variable quantity determines described abnormal from bleeder circuit or main bleeder circuit
Including：If it is less than threshold value to the voltage strength variable quantity, it is determined that described normal from bleeder circuit, the main bleeder circuit is different
Often；If the voltage strength variable quantity is more than or equal to threshold value, it is determined that described abnormal from bleeder circuit.
Due to there was only one in the present embodiment from bleeder circuit, therefore when from the circuit parameter exception of bleeder circuit, nothing
Method determines whether the circuit parameter of the main bleeder circuit is abnormal.But in the present invention from bleeder circuit can also be it is multiple, can
To expect corresponding second voltage measurement module also to be multiple；When detecting that one of them is abnormal from the circuit parameter of bleeder circuit
When, can select it is other above-mentioned circuit parameters detection is carried out from bleeder circuit and second voltage measurement module, reduce from
Bleeder circuit can not detect the whether abnormal situation of main bleeder circuit parameter, improve the circuit parameter detection electricity of above-mentioned bleeder circuit
The accuracy on road.
In the present embodiment, the first voltage measurement module and second voltage measurement module are additionally operable to the voltage detected
Intensity-conversion is the form of amplitude and phase, and according to second voltage measurement module under the different conditions of the switch module institute
The voltage strength detected, calculate the amplitude variable quantity and phase changing capacity of voltage strength.
In the above-described embodiments, there is provided a kind of circuit parameter detection method of bleeder circuit, can be according to principal and subordinate's partial pressure
Whether the accuracy of detection of the circuit parameter variations detection circuit of circuit there is deviation, and is further inferred to cause above-mentioned deviation
Reason, accurately detection circuit is adjusted.The present embodiment provide detection method is simple to operate, detection efficiency is high, can be with
It is widely used in measuring circuit.
It should be understood that the size of the sequence number of each step is not meant to the priority of execution sequence, each process in above-described embodiment
Execution sequence should determine that the implementation process without tackling the embodiment of the present invention forms any limit with its function and internal logic
It is fixed.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each work(
Can unit, module division progress for example, in practical application, can be as needed and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device are divided into different functional units or module, more than completion
The all or part of function of description.Each functional unit, module in embodiment can be integrated in a processing unit, also may be used
To be that unit is individually physically present, can also two or more units it is integrated in a unit, it is above-mentioned integrated
Unit can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.In addition, each function list
Member, the specific name of module are not limited to the protection domain of the application also only to facilitate mutually distinguish.Said system
The specific work process of middle unit, module, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and is not described in detail or remembers in some embodiment
The part of load, it may refer to the associated description of other embodiments.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed device/terminal device and method, can be with
Realize by another way.For example, device described above/terminal device embodiment is only schematical, for example, institute
The division of module or unit is stated, only a kind of division of logic function, there can be other dividing mode when actually realizing, such as
Multiple units or component can combine or be desirably integrated into another system, or some features can be ignored, or not perform.Separately
A bit, shown or discussed mutual coupling or direct-coupling or communication connection can be by some interfaces, device
Or INDIRECT COUPLING or the communication connection of unit, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated module/unit realized in the form of SFU software functional unit and as independent production marketing or
In use, it can be stored in a computer read/write memory medium.Based on such understanding, the present invention realizes above-mentioned implementation
All or part of flow in example method, by computer program the hardware of correlation can also be instructed to complete, described meter
Calculation machine program can be stored in a computer-readable recording medium, and the computer program can be achieved when being executed by processor
The step of stating each embodiment of the method.Wherein, the computer program includes computer program code, the computer program generation
Code can be source code form, object identification code form, executable file or some intermediate forms etc..The computer-readable medium
It can include：Any entity or device, recording medium, USB flash disk, mobile hard disk, the magnetic of the computer program code can be carried
Dish, CD, computer storage, read-only storage (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It is it should be noted that described
The content that computer-readable medium includes can carry out appropriate increasing according to legislation in jurisdiction and the requirement of patent practice
Subtract, such as in some jurisdictions, electric carrier signal and electricity are not included according to legislation and patent practice, computer-readable medium
Believe signal.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to foregoing reality
Example is applied the present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each
Technical scheme described in embodiment is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed
Or replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme, all should
Within protection scope of the present invention.
Claims (10)
- A kind of 1. circuit parameter detection circuit of bleeder circuit, it is characterised in that including：Main bleeder circuit；It is corresponding at least one from bleeder circuit with the main bleeder circuit；The main bleeder circuit and described coupled respectively with signal source from bleeder circuit；The main bleeder circuit includes main divider, is parallel with first voltage measurement module on the main divider, and described first Voltage measurement module is used to detect voltage strength on the main divider；It is described include from bleeder circuit it is corresponding with the main divider from divider and described from bleeder circuit shape for changing The switch module of state；It is described that second voltage measurement module is parallel with from divider；The second voltage measurement module is used for voltage strength and second electricity in first voltage measurement module detection When pressing the voltage strength of measurement module detection inconsistent, calculate it is described from bleeder circuit in different conditions described in from divider Voltage strength variable quantity, according to determining the voltage strength variable quantity from bleeder circuit or the main bleeder circuit whether It is abnormal.
- 2. the circuit parameter detection circuit of bleeder circuit as claimed in claim 1, it is characterised in that the second voltage measurement Module is specifically used for, if detecting, the voltage strength variable quantity is less than threshold value, and judgement is described normal from bleeder circuit, it is determined that The main bleeder circuit is abnormal；If detecting, the voltage strength variable quantity is more than or equal to threshold value, it is determined that described from partial pressure Circuit abnormality.
- 3. the circuit parameter detection circuit of bleeder circuit as claimed in claim 1, it is characterised in that the first voltage measurement The voltage strength that module and the second voltage measurement module are additionally operable to detect is converted to the form of amplitude and phase, and root According to the voltage strength that the second voltage measurement module is detected under the different conditions of the switch module, it is strong to calculate voltage The amplitude variable quantity and phase changing capacity of degree.
- 4. the circuit parameter detection circuit of bleeder circuit as claimed in claim 1, it is characterised in that the main bleeder circuit is also Including the first divider and the second divider；It is described also to include the 3rd divider and the 4th divider from bleeder circuit；First divider, second divider are connected with the main divider respectively；3rd divider, the 4th divider are connected with described from divider respectively；The switch module is connected in parallel on the 4th divider.
- 5. the circuit parameter detection circuit of bleeder circuit as claimed in claim 1, it is characterised in that the main divider, the One divider, the second divider, from divider, the 3rd divider and the 4th divider be resistance, inductance, resistance and inductance connection Circuit, the circuit or inductance and the circuit of capacitance connection of resistance and capacitance connection.
- 6. a kind of electric circuit inspection chip, it is characterised in that the electric circuit inspection chip includes any as described in claim 1 to 5 The circuit parameter detection circuit of the bleeder circuit of item, second divider and the 4th divider are arranged on the circuit inspection Survey the inside of chip.
- 7. a kind of electric energy meter, it is characterised in that the electric energy meter includes the bleeder circuit of any one as described in claim 1 to 5 Circuit parameter detection circuit.
- A kind of 8. circuit parameter detection method of bleeder circuit, it is characterised in that the bleeder circuit include main bleeder circuit and It is corresponding with the main bleeder circuit at least one from bleeder circuit, the main bleeder circuit and it is described from bleeder circuit respectively with Signal source couples；The main bleeder circuit comprises at least main divider, and first voltage measurement mould is parallel with the main divider Block；It is described comprised at least from bleeder circuit it is corresponding with the main divider from divider, it is described that the is parallel with from divider Two voltage measurement modules；It is described also to include being used to change the switch module from bleeder circuit state from bleeder circuit, it is described Detection method includes：Voltage strength on the main divider is detected by the first voltage measurement module；It is described from the voltage strength on divider by second voltage measurement module detection；In the voltage strength and the voltage strength of second voltage measurement module detection of first voltage measurement module detection When inconsistent, by the second voltage measurement module detect it is described from bleeder circuit in different conditions described in from divider Voltage strength variable quantity, according to the voltage strength variable quantity determine described in it is whether different from bleeder circuit or main bleeder circuit Often.
- 9. the circuit parameter detection method of bleeder circuit as claimed in claim 8, it is characterised in that described according to the voltage Whether Strength Changes amount includes extremely described in determining from bleeder circuit or main bleeder circuit：If the voltage strength variable quantity is less than threshold value, it is determined that described normal from bleeder circuit, the main bleeder circuit is abnormal； If the voltage strength variable quantity is more than or equal to threshold value, it is determined that described abnormal from bleeder circuit.
- 10. the circuit parameter detection method of bleeder circuit as claimed in claim 8 or 9, it is characterised in that the first voltage The voltage strength that measurement module and the second voltage measurement module are additionally operable to detect is converted to the form of amplitude and phase, And according to second voltage measurement module voltage strength detected under the different conditions of the switch module, calculate institute State the amplitude variable quantity and phase changing capacity of voltage strength.
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| CN201711222813.5A CN107870298B (en) | 2017-11-29 | 2017-11-29 | Circuit parameter detection circuit and method of voltage dividing circuit and electric energy meter |
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| CN201711222813.5A CN107870298B (en) | 2017-11-29 | 2017-11-29 | Circuit parameter detection circuit and method of voltage dividing circuit and electric energy meter |
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| CN107870298B CN107870298B (en) | 2023-09-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231587A (en) * | 2019-06-28 | 2019-09-13 | 深圳市锐能微科技有限公司 | Detection circuit, method and the electric energy computation chip of bleeder circuit parameter |
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