CN109188313A - A kind of power detector of rank time variant voltage acquisition principle - Google Patents
A kind of power detector of rank time variant voltage acquisition principle Download PDFInfo
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- CN109188313A CN109188313A CN201811369886.1A CN201811369886A CN109188313A CN 109188313 A CN109188313 A CN 109188313A CN 201811369886 A CN201811369886 A CN 201811369886A CN 109188313 A CN109188313 A CN 109188313A
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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
- G01R31/40—Testing power supplies
Abstract
The invention discloses a kind of power detectors of rank time variant voltage acquisition principle, including edge module (1) and electric unit (2), it is characterized by: electric unit (2) is mainly by automatic protection module (29), power boost module (28), electric interfaces socket (21) and printed circuit board composition, edge module (1) is mainly by indicator light (11), electric interfaces contact pin (12), sampling module (13), Micro-processor MCV (14), communication module (15), rank power transformation die block (16), constant-current control module (17) composition, edge module (1) and electric unit (2) are linked together by electric interfaces contact pin (12) and electric interfaces socket (21) respectively, it is connect with backup battery power (3), constitute the protection to backup battery power (3) , detection function.The present invention is able to satisfy the defencive function that electric unit is used alone under different application scene, and internal resistance, the voltage detecting alarm function of configuration work can be also inserted to electric unit.
Description
Technical field
The present invention relates to power detecting technical field is solved, also extends into a kind of pair of power source features voltage internal resistance detection, surveys
The application field of amount refers in particular to one kind power detector modular, based on rank time variant voltage acquisition principle and its realization
Method, mainly in the industry or other application of the power supplys such as electric power, power supply, traffic, communication application.
Background technique
Currently, power supply is element and equipment indispensable in electronic equipment and industrial application industry, it is main system and master
Equipment provides energy, to guarantee that whole equipment or system realize its core major function；And as the element of power-supply system one
As there is battery, super capacitor or its himself to build the modes such as electric power loop realize, the stabilization of these core components, can
Lean on, be safely operated be power-supply system core, and ensure information safety, data safety, transaction security and the people it is daily
Production and living all play and its important role.So how more acurrate, being detected to power unit more rapidly, online
It handles, monitoring and warning, and ensure that the entire power supply moment can be used when using power supply just to seem particularly critical.Currently, in power supply
Generally be powered using battery in system, how the characteristic parameter of real-time accurate measurements battery, so as to anti-in time in advance
Feed source system mode is particularly critical, meanwhile, take which type of application scheme to ensure that detection device is convenient to use and construction,
Finally, if there is better flexible configuration mode to match so that function when meeting different application scene is optional, improve products application
Range and expansion system function, and how to solve to power-supply system accurate measurements, flexible function, simple, configuration method of constructing
There is always the problem of challenge etc. power detecting technical applications tradition always is.
In order to preferably detect power source performance and promote accuracy in detection, existing thinking is can to use manually to patrol
Inspection installs on-Line Monitor Device additional and installs the security risk for bridging the modes such as module to solve battery and power supply, but according to
So come with some shortcomings:
1, manual inspection mode is the measurement for holding multimeter offline mode by operation maintenance personnel and carrying out voltage internal resistance to power-supply system,
Measurement accuracy, accuracy depend on Personal Skills and operating method, and real-time is poor, measurement heavy workload, can mainly answer
Reason after power system failure is searched and fault recognition；
2, on-line monitoring mode is to increase special monitoring device in the power supply system, this is to power-supply system operation conditions and spy
Sign parameter voltages, internal resistance carry out one of real-time, online good mode of monitoring and early warning, significantly solve manual inspection consumption
Take the problem that person property's power is big, detection work is not deep, still, existing monitoring device is in the method for measuring voltage, internal resistance
It is still defective, especially to measurement accumulator internal resistance characteristic parameter when, common direct-current discharge method is because of restricted modular power
Limitation and discharge current excessive cannot cause the internal resistance of cell not measure accurately, accuracy and precision be not high, and multiplicity is poor, equipment
It is at high cost, volume is big, also can not well, the operation conditions of accurate detection power-supply system；
3, installation bridging modular manner is to prevent power-supply system in one of good method of battery pack open circuit, can solve power supply
The problem of any section battery pack open circuit causes whole group power loss in whole group battery in system, there are two types of apply shape for this method at present
State one is using as separate modular, but has a single function, and no expansion interface extends other intelligent functions, is unable to satisfy not
Same site of deployment, the flexible configurations application demand of different function demand, another kind are used as intelligent management unit mode,
Function concentrates configuration, but volume is big, wiring is cumbersome, networking is troublesome, great in constructing amount, is unable to satisfy different application environment and flexibly selects
Match, the actual requirement of expanded application.
Summary of the invention
The purpose of the present invention is to provide the power detector and its implementation of a kind of rank time variant voltage acquisition principle,
Flexible configuration mode can satisfy the defencive function under different application scene to power-supply system, and also expansible configuration is realized to electricity
The internal resistance of source system, voltage detecting alarm function, this kind of method take miniaturization, site, modularized design and configuration mode,
Different application scene functional requirement can be met, improve functional configuration flexibility, reduce system cost of implementation and site operation installation
Cost, and skill is realized using the software and hardware for turning common mode null method based on rank time variant voltage acquisition principle and two primary current output difference moulds
Art.Solve existing monitoring device measure voltage and when internal resistance parameter because of modular power it is restricted caused by the internal resistance of cell can not be quasi-
Really, the relevant issues of duplicate measurements ensure that the precision, multiplicity and accuracy of measurement.It achieves the object of the present invention and is taken
Technical solution be: a kind of power detector of rank time variant voltage acquisition principle is by edge module and electric unit two parts group
At, it is characterised in that: electric unit is mainly by automatic protection module, power boost module, electric interfaces socket and printed board electricity
Road composition, edge module is mainly by indicator light, electric interfaces contact pin, sampling module, Micro-processor MCV, communication module, rank power transformation
Die block, constant-current control module composition, edge module and electric unit pass through electric interfaces contact pin and electric interfaces socket respectively
Docking inserting links together, and the positive connecting cable on electric unit connects pressure ring and backup battery power anode by anode
Column is one-to-one to be connected and fixed, and the cathode connecting cable on electric unit connects pressure ring and backup battery power negative terminal by cathode
It is one-to-one to be connected and fixed, so that the protection to backup battery power of edge module, electric unit, detection function are constituted, it is electrical single
Member realizes the defencive function to backup battery power, the method for software and hardware based on rank time variant voltage Acquisition Circuit in edge module
It is made of, is realized to backup battery power D/A transformation, A/D2 transformation, A/D1 transformation, amplifier key component and logical program
Internal resistance detection, voltage detecting function.
The electric unit, which is characterized in that size long 100mm, wide 45mm, high 14mm are poured by the die sinking of PVC insulation material
One-pass molding is built, both ends pour the long 150mm cathode connecting cable of Interference fixation and positive connecting cable, cable both ends point respectively
Not Ya Jie cathode connection pressure ring and anode connection pressure ring after be directly connected to backup battery power backup battery power negative terminal,
Backup battery power positive terminal, cathode connect the fixed temperature sensor that encapsulates on pressure ring and are used to acquire backup battery power cathode
Column temperature, cable are taken on PVC insulating materials and form the copper cable of diameter 10mm with more preferable at after stock by the coil buckling of multicore copper wire in outside
Ground bending is easy for installation, and electric unit has been internally integrated circuit board, automatic protection module, electric interfaces socket and power boost mould
Automatic protection functions when block is realized automatically to backup battery power exception, automatic protection module are directly connected to standby battery supply
Positive and negative terminals, power boost module be connected to backup battery power positive and negative anodes take electricity and boost to+5V give automatic protection module supply
Electricity, while+5V power supply being guided to the pin GND and+5V of electric interfaces socket, meanwhile, the positive and negative anodes signal of backup battery power
Also the pin V+ and V- of electric interfaces socket are immediately directed against, the electric interfaces contact pin of electric interfaces socket and edge module is to slotting company
It connects, electric interfaces socket pin is successively defined as V-, GND ,+5V, V+ from left to right.
The edge module is the core that entire power detector function is realized, which is characterized in that size is long
100mm, wide 45mm, high 10mm is consistent with electric unit length and width, pours one-pass molding, edge module bottom by the die sinking of PVC insulation material
Portion keep right be provided with electric interfaces contact pin directly with electric unit electric interfaces socket up and down corresponding grafting, electric interfaces contact pin pipe
Foot is successively defined as V-, GND ,+5V, V+ from left to right, and pin GND ,+5V a pair use come to module each in edge module progress
Power supply, pin V+, V- a pair realize acquisition to backup battery power signal, keep right at the top of edge module be provided with indicator light with
Showing edge module and power work state, side is provided with two RJ45 wired communication interfaces and supports before edge module
RS485 serial communication with by edge module and power work state teletransmission to other systems.
The constant-current control module, is made of constant-current source, exports stable direct current output under Micro-processor MCV control
For being used when inner walkway, the communication module, which is characterized in that not only have the support of RJ45 wired communication interface
RS485 serial communication, also support 433MHz less radio-frequency group-net communication mode.
The rank power transformation die block is the core of edge module, which is characterized in that is mainly become by A/D1 transformation, A/D2
It changes, D/A transformation, amplifier composition, edge module is by electric interfaces contact pin 12 by electric interfaces socket and backup battery electricity
The positive and negative anodes connection in source introduces V+, V- ,+5V, GND, wherein+5V, GND are directly for edge module internal microprocessor microprocessor
MCU power supply, and V+, V- are directly connected with the input terminal of A/D1 transformation and A/D2 transformation after resistance R, capacitor C1, capacitor C2,
The output end of A/D1 transformation and A/D2 transformation is directly connected to Micro-processor MCV and carries out sampling processing, while the one of Micro-processor MCV
A signal is output to the input terminal of D/A transformation, and the output end of D/A transformation is directly connected with the input terminal of A/D2 transformation 162, in this way
A rank time variant voltage sample circuit is constituted, is realized to backup battery power voltage detecting, internal resistance detection function.
The voltage detecting function, which is characterized in that by A/D1 transformation 161 in real time by the voltage of backup battery power into
It is input to Micro-processor MCV after row acquisition and analog to digital conversion to be calculated, the precision position position A/D of A/D1 transformation, which can guarantee, to be adopted
The precision of sample 1.5-3V cell voltage reaches 0.001V.
The internal resistance detection function, which is characterized in that the A/ of acquisition and control different moments is passed through by Micro-processor MCV
D1 transformation, A/D2 transformation, D/A transformation and constant-current control module realize that internal resistance=voltage ÷ electric current, we are soft or hard in system
Part realizes that taking two primary current output difference moulds turns common mode method and rank time variant voltage sampling method come backup battery when eliminating survey internal resistance
The external influences of power supply float charge voltage, charger etc., to improve accuracy, precision and the multiplicity of inner walkway, in fact
Existing process is as follows, and Micro-processor MCV is converted by A/D1 and acquires backup battery power float charge voltage in real time when normal, and the t1 moment is micro-
Processor MCU controls constant-current control module with i1=3A constant current output, passes through 161 acquisition backup battery power 3 of A/D1 transformation at this time
Voltage u1, by Micro-processor MCV control D/A convert output voltage u1 to A/D2 transformation input offset, guarantee
Micro-processor MCV collects voltage u2=0 of A/D2 transformation, if A/D2 converts output voltage u2 ≠ 0, to convert by adjusting D/A
A/D2 is relocked when 163 output voltage u1=0 converts 162 numerical value u2=0 as initial voltage, the control of t2 moment Micro-processor MCV
Constant-current control module is with i2=5A constant current output, and the leaping voltage value u3 of backup battery power is amplified by operational amplifier at this time
After be sent to A/D2 transformation and accurately acquire, this process is to apply that two primary current output difference moulds turn common mode method and rank time variant voltage is adopted
Sample method calculates its characteristic parameter voltage and interior to calculate the voltage jump amount of the backup battery power in t1 to t2 change procedure
The internal resistance of resistance, backup battery power takes full advantage of A/ due to only acquiring the step voltage value of transformation for u3/ (i2-i1)
The width and precision of D converter have sampled the micromutation amount of step voltage well, substantially increase sampling accuracy, essence
Degree, ensure that the multiplicity of inner walkway.
The power detector and its implementation of a kind of rank time variant voltage acquisition principle are by edge module and electric unit group
At, it can satisfy the defencive function that electric unit is used alone under different application scene, it can also be by increasing with edge module and electricity
Gas unit inserts the internal resistance of configuration work, voltage detecting alarm function, this kind of method takes miniaturization, site, modularization to set
Meter and configuration mode can meet different application scene functional requirement, improve functional configuration flexibility, reduce system cost of implementation；
It is realized in edge module using the software and hardware for turning common mode null method based on rank time variant voltage acquisition principle and two primary current output difference moulds
Technology, solve existing monitoring device measure voltage and when internal resistance parameter because of modular power it is restricted caused by the internal resistance of cell can not
Accurately, the relevant issues of duplicate measurements, when device uses the novel voltage sample of one kind and internal resistance acquisition different application scene
Implementation method so that measurement internal resistance when discharge current 3-5A is dropped to by original 10A, it is important that guarantee measurement precision,
Multiplicity and accuracy；In addition, apparatus module, Miniaturization Design, the wiring summary of electric unit pass through positive and negative two companies
Wiring is directly connect with backup battery power, and edge module is mounted on electric unit according to apolegamy directly inserting, field connection
Quickly, construction is simple is installed on the spot, improves construction and O&M efficiency.
Present invention combination new technology, in conjunction with on-site conventional application requirement, to the system of power detector and its implementation
It makes production and proposes new idea and method, the present invention has the advantages that a kind of power detector of rank time variant voltage acquisition principle
And its implementation is made of edge module and electric unit, can satisfy and electric unit is used alone under different application scene
Defencive function can also insert the internal resistance of configuration work, voltage detecting alarm function with edge module and electric unit by increasing, should
Kind method takes miniaturization, site, modularized design and configuration mode, can meet different application scene functional requirement, improves
Functional configuration flexibility reduces system cost of implementation；Using based on rank time variant voltage acquisition principle and two primary currents in edge module
Output differential mode turns the software and hardware realization technology of common mode null method, solves existing monitoring device in measurement voltage and internal resistance parameter
When because modular power it is restricted caused by the internal resistance of cell can not accurate, duplicate measurements relevant issues, device uses a kind of novel
Implementation method when voltage sample and internal resistance acquisition different application scene, so that discharge current when measurement internal resistance is by original 10A
Drop to 3-5A, it is important that guarantee precision, multiplicity and the accuracy of measurement；In addition, apparatus module, Miniaturization Design, electricity
The wiring summary of gas unit is directly connect with backup battery power by positive and negative two connecting lines, and edge module is according to apolegamy
Directly inserting is mounted on electric unit, and field connection is quick, and construction is simple is installed on the spot, improves construction and O&M efficiency.
Detailed description of the invention
Fig. 1 is main assembly structure chart of the invention；
Fig. 2 is edge module in the present invention and electrical module composition and connection figure；
Fig. 3 is that the internal resistance detection Acquisition Circuit in the present invention realizes schematic diagram；
Fig. 4 is the internal resistance detection acquisition functional software flow chart in the present invention.
In figure: 1, edge module；2, electric unit；3, battery-backed power source；11, indicator light；12, electric interfaces contact pin；
13, sampling module；14, Micro-processor MCV；15, communication module；16, rank power transformation die block；17, constant-current control module；21, electric
Gas interface socket；22, temperature sensor；24, cathode connecting cable；25, cathode connects pressure ring；26, positive connecting cable；27,
Anode connection pressure ring；28, power boost module；29, automatic protection mould；31, backup battery power negative terminal；32, backup battery
Positive pole column；161, A/D1 is converted；162, A/D2 is converted；163, D/A is converted；164, amplifier.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment, the present invention will be further described in detail.Referring to attached drawing, one
The power detector of kind rank time variant voltage acquisition principle is made of edge module 1 and 2 two parts of electric unit, it is characterised in that:
Electric unit 2 is mainly made of automatic protection module 29, power boost module 28, electric interfaces socket 21 and printed circuit board,
Edge module 1 is mainly by indicator light 11, electric interfaces contact pin 12, sampling module 13, Micro-processor MCV 14, communication module 15, rank
Power transformation die block 16, constant-current control module 17 form, and edge module 1 and electric unit 2 pass through 12 He of electric interfaces contact pin respectively
The docking inserting of electric interfaces socket 21 links together, and the positive connecting cable 26 on electric unit 2 connects pressure ring by anode
27 with backup battery power positive terminal 32 is one-to-one is connected and fixed, the cathode connecting cable 24 on electric unit 2 passes through cathode and connects
It connects pressure ring 25 and backup battery power negative terminal 31 is one-to-one is connected and fixed, to constitute edge module 1, electric unit 2 to rear
The protection of standby battery supply 3, detection function, electric unit 2 realize the defencive function to backup battery power 3, in edge module 2
Method of software and hardware based on rank time variant voltage Acquisition Circuit is by D/A transformation 163, A/D2 transformation 162, A/D1 transformation 161, amplification
164 key component of device and logical program are constituted, and realize internal resistance detection, the voltage detecting function to backup battery power 3.
The electric unit 2, which is characterized in that the long 100mm of size, wide 45mm, high 14mm are opened by PVC insulation material
One-pass molding is poured, both ends pour the long 150mm cathode connecting cable 24 of Interference fixation and positive connecting cable 26, cable respectively
Both ends are directly connected to the backup battery of backup battery power 3 after crimping cathode connection pressure ring 25 and anode connection pressure ring 27 respectively
Power cathode column 31, backup battery power positive terminal 32, it is fixed on cathode connection pressure ring 25 to encapsulate temperature sensor 22 and be used for
31 temperature of backup battery power negative terminal is acquired, cable takes on PVC insulating materials group in outside at after stock by the coil buckling of multicore copper wire
Easy for installation to be preferably bent at the copper cable of diameter 10mm, electric unit 2 has been internally integrated circuit board, automatic protection module
29, electric interfaces socket 21 and power boost module 28 realize the automatic protection functions to backup battery power 3 when abnormal automatically,
Automatic protection module 29 is directly connected to standby 3 positive and negative terminals of battery supply, and power boost module 28 is connected to backup battery power 3
Positive and negative anodes take electricity and boost to+5V and power to automatic protection module 29, while+5V power supply being guided to the pipe of electric interfaces socket 21
Foot GND and+5V, meanwhile, the positive and negative anodes signal of backup battery power 3 be also immediately directed against electric interfaces socket 21 pin V+ and
V-, the electric interfaces contact pin 12 of electric interfaces socket 21 and edge module 1 is to slotting connection, and 21 pin of electric interfaces socket is from left-hand
The right side is successively defined as V-, GND ,+5V, V+.
The edge module 1 is the core that entire power detector function is realized, which is characterized in that size is long
100mm, wide 45mm, high 10mm is consistent with 2 length and width of electric unit, pours one-pass molding, edge module 1 by the die sinking of PVC insulation material
Bottom, which is kept right, to be provided with electric interfaces contact pin 12 and directly corresponds to grafting with 2 about 21 electric interfaces socket of electric unit, is electrically connect
Mouth 12 pin of contact pin is successively defined as V-, GND ,+5V, V+ from left to right, and pin GND ,+5V a pair use come to edge module 1
In each module be powered, pin V+, V- a pair realizes acquisition to 3 signal of backup battery power, keeps right at the top of edge module 1
Indicator light 11 is provided with showing edge module 1 and power work state, 1 front side of edge module, which is provided with two RJ45, to be had
Line communication interface support RS485 serial communication with by edge module 1 and power work state teletransmission to other systems.
The constant-current control module 17, is made of constant-current source, exports stable direct current under the control of Micro-processor MCV 14
Output when inner walkway for using, the communication module 15, which is characterized in that not only have RJ45 wired communication interface branch
RS485 serial communication is held, also support 433MHz less radio-frequency group-net communication mode；The rank power transformation die block 16 is edge mould
The core of block 1, which is characterized in that mainly it is made of A/D1 transformation 161, A/D2 transformation 162, D/A transformation 163, amplifier 164,
Edge module 1 is connect with the positive and negative anodes of backup battery power 3 by electric interfaces socket 21 by electric interfaces contact pin 12 and introduces V
+, V- ,+5V, GND, wherein+5V, GND directly for 1 internal microprocessor MCU14 of edge module power, and V+, V- pass through resistance
R, the input terminal for directly converting 161 and A/D2 transformation 162 after capacitor C1, capacitor C2 with A/D1 is connected, and A/D1 converts 161 and A/D2
The output end of transformation 162 is directly connected to Micro-processor MCV 14 and carries out sampling processing, while a signal of Micro-processor MCV 14
It is output to the input terminal of D/A transformation 163, the output end of D/A transformation 163 is directly connected with the input terminal of A/D2 transformation 162, in this way
A rank time variant voltage sample circuit is constituted, is realized to 3 voltage detecting of backup battery power, internal resistance detection function.
The voltage detecting function, which is characterized in that by A/D1 transformation 161 in real time by the voltage of backup battery power 3
It is acquired and is input to MCU14 after analog to digital conversion and be calculated, the A/D of precision position 24 of A/D1 transformation 161 can guarantee
The precision of sampling 1.5-3V cell voltage reaches 0.001V.
The internal resistance detection function, which is characterized in that by Micro-processor MCV 14 by acquiring and controlling different moments
A/D1 transformation 161, A/D2 transformation 162, D/A transformation 163 and constant-current control module 17 realize, internal resistance=voltage ÷ electric current, I
Take two primary current output difference moulds in system hardware and software realization and turn common mode method and rank time variant voltage sampling method and eliminate in survey
The external influences of 3 float charge voltage of backup battery power, charger etc. when resistance, to improve accuracy, the precision of inner walkway
And multiplicity, realize that process is as follows, acquisition backup battery is electric in real time by A/D1 transformation 161 for Micro-processor MCV 14 when normal
3 float charge voltage of source, t1 moment Micro-processor MCV 14 control constant-current control module 17 with i1=3A constant current output, pass through A/D1 at this time
The voltage u1 of 161 acquisition backup battery power 3 of transformation, converts 163 output voltage u1 by the D/A that Micro-processor MCV 14 controls
The input converted to A/D2 is offset, and guarantees that Micro-processor MCV 14 collects voltage u2=0 of A/D2 transformation 162, if A/D2
162 output voltage u2 ≠ 0 are converted, A/D2 is relocked when converting 163 output voltage u1=0 by adjusting D/A and converts 162 numerical value
U2=0 be used as initial voltage, t2 moment Micro-processor MCV 14 control constant-current control module 17 with i2=5A constant current output, at this time after
The leaping voltage value u3 of standby battery supply 3 is sent to A/D2 transformation 162 and accurately acquires after amplifying by operational amplifier 164,
This process is that two primary current output difference moulds is applied to turn common mode method and rank time variant voltage sampling method to calculate in t1 to t2 change procedure
The voltage jump amount of middle backup battery power 3 calculates its characteristic parameter voltage and internal resistance, and the internal resistance of backup battery power 3 is
U3/ (i2-i1) takes full advantage of the width and precision of A/D converter, very due to only acquiring the step voltage value of transformation
The good micromutation amount for having sampled step voltage substantially increases sampling accuracy, precision, ensure that the repetition of inner walkway
Degree.
The power detector and its implementation of a kind of rank time variant voltage acquisition principle are by edge module and electric unit group
At, it can satisfy the defencive function that electric unit is used alone under different application scene, it can also be by increasing with edge module and electricity
Gas unit inserts the internal resistance of configuration work, voltage detecting alarm function, this kind of method takes miniaturization, site, modularization to set
Meter and configuration mode can meet different application scene functional requirement, improve functional configuration flexibility, reduce system cost of implementation；
It is realized in edge module using the software and hardware for turning common mode null method based on rank time variant voltage acquisition principle and two primary current output difference moulds
Technology, solve existing monitoring device measure voltage and when internal resistance parameter because of modular power it is restricted caused by the internal resistance of cell can not
Accurately, the relevant issues of duplicate measurements, when device uses the novel voltage sample of one kind and internal resistance acquisition different application scene
Implementation method so that measurement internal resistance when discharge current 3-5A is dropped to by original 10A, it is important that guarantee measurement precision,
Multiplicity and accuracy；In addition, apparatus module, Miniaturization Design, the wiring summary of electric unit pass through positive and negative two companies
Wiring is directly connect with backup battery power, and edge module is mounted on electric unit according to apolegamy directly inserting, field connection
Quickly, construction is simple is installed on the spot, improves construction and O&M efficiency.
It should be understood that and understand, for those of ordinary skill in the art, in the spirit and scope for not departing from invention
It is interior, several improvement or transformation can also be made, and these are improved or transformation is regarded as protection scope of the present invention.
Claims (5)
1. a kind of power detector of rank time variant voltage acquisition principle, including edge module (1) and electric unit (2), feature
Be: electric unit (2) is mainly by automatic protection module (29), power boost module (28), electric interfaces socket (21) and print
Making sheet circuit composition, edge module (1) is mainly by indicator light (11), electric interfaces contact pin (12), sampling module (13), micro process
Device MCU(14), communication module (15), rank power transformation die block (16), constant-current control module (17) composition, edge module (1) and electricity
Gas unit (2) is linked together by electric interfaces contact pin (12) and electric interfaces socket (21) docking inserting respectively, electrical single
Positive connecting cable (26) on first (2) connects pressure ring (27) and backup battery power positive terminal (32) one-to-one company by anode
Fixation is connect, the cathode connecting cable (24) on electric unit (2) passes through cathode connection pressure ring (25) and backup battery power cathode
Column (31) is one-to-one to be connected and fixed, thus constitute edge module (1), electric unit (2) to the protections of backup battery power (3),
Detection function, electric unit (2) realize the defencive function to backup battery power (3), are based on rank time variant voltage in edge module (2)
The method of software and hardware of Acquisition Circuit converts (161), amplifier by D/A transformation (163), A/D2 transformation (162), A/D1
(164) component and logical program are constituted, and realize internal resistance detection, the voltage detecting function to backup battery power (3).
2. according to the power detector of rank time variant voltage acquisition principle described in claim 1, it is characterised in that: the electrical list
First (2), size long 100mm, wide 45mm, high 14mm pour one-pass molding by the die sinking of PVC insulation material, and both ends pour snap respectively
Long 150mm cathode connecting cable (24) and positive connecting cable (26) are secured, cable both ends crimp cathode connection pressure ring respectively
(25) and anode connection pressure ring (27) after be directly connected to backup battery power (3) backup battery power negative terminal (31), after
Standby battery supply positive terminal (32), cathode connect fixed encapsulate temperature sensor (22) on pressure ring (25) and are used to acquire standby electricity
Pond power cathode column (31) temperature, cable form diameter at taking on PVC insulating materials in outside after stock by the coil buckling of multicore copper wire
The copper cable of 10mm is easy for installation to be preferably bent, electric unit (2) be internally integrated circuit board, automatic protection module (29),
Automatic protection function when electric interfaces socket (21) and power boost module (28) are realized automatically to backup battery power (3) exception
Can, automatic protection module (29) is directly connected to standby battery supply (3) positive and negative terminals, and power boost module (28) is connected to standby
Battery supply (3) positive and negative anodes take electricity and boost to+5V and power to automatic protection module (29), while+5V power supply being guided to electrically
The pin GND and+5V of interface socket (21), meanwhile, the positive and negative anodes signal of backup battery power (3) is also immediately directed against electric interfaces
The pin V+ and V- of socket (21), the electric interfaces contact pin (12) of electric interfaces socket (21) and edge module (1) to slotting connection,
Electric interfaces socket (21) pin is successively defined as V-, GND ,+5V, V+ from left to right.
3. according to the power detector of rank time variant voltage acquisition principle described in claim 1, it is characterised in that: the edge mould
Block (1) is the core that entire power detector function is realized, size long 100mm, wide 45mm, high 10mm and electric unit (2)
Length and width are consistent, pour one-pass molding by the die sinking of PVC insulation material, edge module (1) bottom, which is kept right, is provided with electric interfaces contact pin
(12) grafting is directly corresponded to up and down with electric unit (2) electric interfaces socket (21), electric interfaces contact pin (12) pin is from left-hand
The right side is successively defined as V-, GND ,+5V, V+, pin GND ,+5V a pair using being powered to each module in edge module (1),
Pin V+, V- a pair realizes the acquisition to backup battery power (3) signal, keeps right at the top of edge module (1) and is provided with indicator light
(11) with showing edge module (1) and power work state, edge module (1) front side is provided with two RJ45 wire communications
Interface support RS485 serial communication with by edge module (1) and power work state teletransmission to other systems.
4. according to the power detector of rank time variant voltage acquisition principle described in claim 1, it is characterised in that: the constant current control
Molding block (17) is made of constant-current source, and the stable direct current output of output is used for inner walkway under Micro-processor MCV (14) control
When use, the communication module (15), not only have RJ45 wired communication interface support RS485 serial communication, also support
433MHz less radio-frequency group-net communication mode.
5. according to the power detector of rank time variant voltage acquisition principle described in claim 1, it is characterised in that: the rank power transformation
Die block (16) is the core of edge module (1), mainly by A/D1 transformation (161), A/D2 transformation (162), D/A transformation (163),
Amplifier (164) composition, edge module (1) pass through electric interfaces socket (21) and backup battery by electric interfaces contact pin (12)
The positive and negative anodes connection of power supply (3) introduces V+, V- ,+5V, GND, wherein+5V, GND are directly for edge module (1) internal microprocessor
MCU(14 it) powers, and V+, V- are directly converted with A/D1 transformation (161) and A/D2 after resistance R, capacitor C1, capacitor C2
(162) input terminal is connected, and the output end of A/D1 transformation (161) and A/D2 transformation (162) is directly connected to Micro-processor MCV (14)
Sampling processing is carried out, while a signal of Micro-processor MCV (14) is output to the input terminal of D/A transformation (163), D/A transformation
(163) output end is directly connected with the input terminal of A/D2 transformation (162), constitutes a rank time variant voltage sample circuit in this way, real
Now to backup battery power (3) voltage detecting, internal resistance detection function；The voltage detecting function, which is characterized in that by A/D1
The voltage of backup battery power (3) is acquired in real time and is input to MCU(14 after analog to digital conversion by transformation (161)) it calculates
It obtains, the A/D of precision position 24 of A/D1 transformation (161) can guarantee that the precision of sampling 1.5-3V cell voltage reaches 0.001V；Institute
The internal resistance detection function of stating converts (161), A/D2 by acquiring and controlling the A/D1 of different moments by Micro-processor MCV (14)
Transformation (162), D/A convert (163) and constant-current control module (17) to realize, internal resistance=voltage ÷ electric current, we are soft in system
Two primary current output difference moulds are taken in hardware realization turns common mode method and rank time variant voltage sampling method come standby electricity when eliminating survey internal resistance
The external influences of pond power supply (3) float charge voltage, charger etc., to improve accuracy, precision and the multiplicity of inner walkway,
It realizes that process is as follows, and Micro-processor MCV (14) acquires backup battery power (3) in real time by A/D1 transformation (161) when normal
Float charge voltage, t1 moment Micro-processor MCV (14) control constant-current control module (17) with i1=3A constant current output, pass through A/ at this time
D1 converts the voltage u1 of (161) acquisition backup battery power (3), converts (163) by the D/A that Micro-processor MCV (14) control
The input of output voltage u1 to A/D2 transformation is offset, and guarantees that Micro-processor MCV (14) collect the electricity of A/D2 transformation (162)
U2=0 is pressed, if A/D2 converts (162) output voltage u2 ≠ 0, is locked again when converting (163) output voltage u1=0 by adjusting D/A
Transformation (162) numerical value u2=0 A/D2 is determined as initial voltage, and t2 moment Micro-processor MCV (14) controls constant-current control module (17)
With i2=5A constant current output, the leaping voltage value u3 of backup battery power (3) is sent after being amplified by operational amplifier (164) at this time
Enter to A/D2 transformation (162) and accurately acquire, this process is that two primary current output difference moulds is applied to turn common mode method and rank time variant voltage
Sampling method calculates its characteristic parameter voltage to calculate the voltage jump amount of the backup battery power (3) in t1 to t2 change procedure
And internal resistance, the internal resistance of backup battery power (3) they are u3/ (i2-i1), due to only acquiring the step voltage value of transformation, sufficiently
The width and precision of A/D converter is utilized, has sampled the micromutation amount of step voltage well, it is quasi- to substantially increase sampling
Exactness, precision ensure that the multiplicity of inner walkway.
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