CN203149054U - Real-time on-line monitoring system monitoring lightning protection device damaged switch value and ground resistance - Google Patents
Real-time on-line monitoring system monitoring lightning protection device damaged switch value and ground resistance Download PDFInfo
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- CN203149054U CN203149054U CN 201320112594 CN201320112594U CN203149054U CN 203149054 U CN203149054 U CN 203149054U CN 201320112594 CN201320112594 CN 201320112594 CN 201320112594 U CN201320112594 U CN 201320112594U CN 203149054 U CN203149054 U CN 203149054U
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Abstract
The utility model discloses a real-time on-line monitoring system monitoring lightning protection device damaged switch value and ground resistance. The measuring system comprises a server, one or more remote monitoring terminals, and one or more data acquisition systems. The server is respectively connected with each remote monitoring terminal and each data acquisition system. Each data acquisition system comprises a damaged switch value data acquisition module, a ground resistance acquisition module and a data processing module. The data processing module is respectively connected with the damaged switch value data acquisition module and the ground resistance acquisition module. The real-time on-line monitoring system monitoring lightning protection device damaged switch value and ground resistance can ensure effective judgment of the damaged switch value of each lightning protection device and meanwhile make the ground resistance precisely measured in a real-time on-line way. The real-time on-line monitoring system is especially suitably used for railway signal lightning protection.
Description
Technical field
The utility model belongs to the electronic communication technology field, relates to a kind of on-line monitoring system, relates in particular to switching value and stake resistance real time on-line monitoring system that a kind of lightning protection device damages.
Background technology
Lightning protection device comprises lightning protection for power supply and siganl thunder-proof device, and lightning protection device also claims lightning arrester, Surge Protector, surge protector (Surge Protection Devices is called for short SPD), overvoltage protection device.Lightning protection device is to prevent from being widely used in communication field, power domain by the equipment in being struck by lightning by modern electricity and other technology, obtains everybody great attention.
Be provided with some switching values in the lightning protection device, inner clean and tidy in order to make lightning protection device, switching value adopts matrix form to arrange usually, as the switching value of the capable n row of m is set in the lightning protection device.Existing lightning protection device on-off value data acquisition mode is that connection cable is connected each switching value respectively, then judges according to each circuit is whether unimpeded whether each switching value has fault.Usually need m*n bar cable, the wiring in the lightning protection device seems and brings a lot of inconvenience in the time of can or safeguarding to wiring usually by in disorder no chapter.
Simultaneously, the connecting line that connects switching value can think to have only one, and the connecting line of each switching value is irrelevant mutually; If the fault of circuit self, then have no idea to know circuit self fault, still be that lightning protection device breaks down.
In addition, buildings and electronic equipment ground connection are extremely important.Buildings ground connection is good, people and thing in the protection buildings that can be to a great extent; If also ground connection is good for the electronic equipment in the buildings; just can dwindle the potential difference (PD) between electronic equipment casing and the earth; potential difference (PD) hour; may not can produce induced voltage; thereby can not produce displacement current; the electron device of electronic equipment internal can be not breakdown because of the discharge of thundering, thereby play the effect of protection electronic equipment.
Whether buildings and electronic equipment ground connection is good, is to embody by stake resistance.If stake resistance is higher, then ground connection is relatively poor; Otherwise stake resistance is little, and then ground connection is good.
Ground resistance measuring instrument is exactly the instrument of a kind of special measurement buildings and electronic equipment grounding resistance.Mainly contain two class ground resistance measuring instruments in the market:
1) hand-rail type ground resistance table: it is a kind of comparatively traditional measurement instrument, and ultimate principle is to adopt three point voltage drop methods.This instrument needs 3 must not of being in line of measured resistance and two auxiliary earth utmost points parallel with the overhead transmission line of metallic conduit or vicinity when measuring; Tested earthing pole also should disconnect with equipment when measuring.This kind instrument benefit is the quantity regardless of earth point, and single-point grounding or multipoint earthing can be measured, and shortcoming is to need subsidiary ground.
2) hinder table: hinder table is a kind of survey instrument of novelty pincerlikely, and it is convenient, fast, exactly likes clamp on amperemeter pincerlikely, do not need the subtest stake during measurement, only need to obtain measurement result, the resistance surveying work toward by a folder on the geodesic line with being very easy to.This kind instrument benefit is not need subsidiary ground, the measuring process simple and fast, and shortcoming is to measure 2 above earth points, can't measure the single-point grounding point.
The utility model content
Technical problem to be solved in the utility model is: the switching value and the stake resistance real time on-line monitoring system that provide a kind of lightning protection device to damage, can guarantee effective judgement of the switching value that each lightning protection device damages, can accurately record stake resistance by real-time online simultaneously.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
Switching value and stake resistance real time on-line monitoring system that a kind of lightning protection device damages, described measuring system comprises: server, one or more remote monitoring terminal, one or more data acquisition system (DAS), described server connect each remote monitoring terminal and each data acquisition system (DAS) respectively;
Described data acquisition system (DAS) comprises damages on-off value data acquisition module, stake resistance acquisition module, data processing module, and data processing module connects damage on-off value data acquisition module, stake resistance acquisition module respectively.
As a kind of preferred version of the present utility model, described damage on-off value data acquisition module comprises on-off value data acquisition unit, the data processing unit that is the matrix form arrangement, and described data processing unit connects the on-off value data acquisition unit;
Lightning protection device comprises the capable switching value of m, altogether s switching value; The quantity of every capable switching value is identical or different, and in each row switching value, delegation's switching value comprises n switching value at most; Switching value D
AbBe defined as the capable b row of a switching value; Wherein, a, b are integer, a ∈ [1, m], b ∈ [1, n];
Described on-off value data acquisition unit comprises m capable connecting line, a n row connecting line, switching value D
IjTwo ends respectively with i capable connecting line K
iAnd j row connecting line I
jConnect; Simultaneously, i capable connecting line K
iOr j row connecting line I
jFirst diode by correspondence connects switching value D
IjCorresponding port; Wherein, i, j are integer, i ∈ [1, m], j ∈ [1, n].
As a kind of preferred version of the present utility model, described data processing unit comprises lightning protection device fault scanning module, in order to carry out obtaining of switching value status information by described on-off value data acquisition unit, realizes the detection of lightning protection device fault.
As a kind of preferred version of the present utility model, described on-off value data acquisition unit also comprises s circuit self-checking circuit, and namely each switching value is furnished with a circuit self-checking circuit, and each circuit self-checking circuit comprises second diode; Circuit self-checking circuit S
AbBe defined as the capable b column line of a self-checking circuit; Wherein, a, b are integer, a ∈ [1, m], b ∈ [1, n]; Circuit self-checking circuit S
IjAn end connect i capable connecting line K
i, the other end connects j row connecting line I
jThe direction that first diode that second diode is corresponding with it arranges is opposite.
As a kind of preferred version of the present utility model, described lightning protection device comprises that m*n is the switching value that matrix form is arranged, i.e. s=m*n; Described data acquisition unit comprises m*n the circuit self-checking circuit that is the matrix form arrangement.
As a kind of preferred version of the present utility model, described stake resistance acquisition module comprises microprocessor module, constant current source injection module, sampled voltage read module, grounding resistance measurement module; Described microprocessor module connects constant current source injection module, sampled voltage read module, grounding resistance measurement module respectively;
Described constant current source injection module provides constant current source or closes constant current source under the control of microprocessor module;
Described sampled voltage read module is accepted the control of microprocessor module, measures sampled voltage;
Described grounding resistance measurement module is accepted the control of microprocessor module, and the sampled voltage that measures according to described sampled voltage read module obtains stake resistance.
As a kind of preferred version of the present utility model, described stake resistance acquisition module also comprises the interference source acquisition module that is connected with microprocessor module, in order to accept the control of microprocessor module, interference source voltage is measured.
As a kind of preferred version of the present utility model, described stake resistance acquisition module also comprises the interference source processing module that is connected with microprocessor module, adopts controlled digital regulation resistance AR1 and four-operational amplifier U5B; Realize work for the treatment of to interference source by digital regulation resistance AR1 and four-operational amplifier U5B;
Described interference source processing module adopts controlled digital regulation resistance AR1 and four-operational amplifier U5B to carry out the voltage reference adjustment.
As a kind of preferred version of the present utility model, described acquisition system also connects a display module, and display module is connected with data processing module, in order to show relevant information.
As a kind of preferred version of the present utility model, described data acquisition system (DAS) gathers the data of gathering to server by harvester.
The beneficial effects of the utility model are: switching value and stake resistance real time on-line monitoring system that the lightning protection device that the utility model proposes damages, can guarantee effective judgement of the switching value that each lightning protection device damages, can accurately record stake resistance by real-time online simultaneously.The utility model especially is suitable for the railway signal lightning protection.
The switching value measurement aspect that lightning protection device damages: by the matrix form wiring, can reduce the connection cable of switching value, improve the cleaning of lightning protection device inside simultaneously, guarantee effective judgement of each switching value performance simultaneously.In addition, the utility model can also realize that circuit self detects and lightning protection device detects, and be confirmed to be the fault of circuit self better, or lightning protection device breaks down.
The utility model lightning protection device alert data acquisition system working stability adopts matrix-style to arrange the lightning protection device switching value, improves stability, response speed that warning message is gathered, and reduces the wiring of lightning protection device switching value; Utilize the security that photoelectricity is isolated and transient voltage inhibition circuit improves acp chip and lightning protection device switching value; Adopt the circuit self-checking circuit to realize the line fault of lightning protection device switching value and the Intelligent Recognition of himself fault; Adopt mature and stable ARM chip design collector, further improved the stability of collector.
Acquisition system communication screen is simple to operate.Lightning protection device is numerous in the lightning protection cabinet, manually be difficult to timely fault location lightning protection device, and alarm indication fault location lightning protection device is fast shielded in collector communication, significantly improves the fault recognition rate of lightning protection device; The ground connection ground resistance of equipment, buildings etc. also shows at display screen synchronously, has improved the real-time that the ground connection performance is judged; By collector communication screen the systematic parameter of collector is set, and shows the warning message of lightning protection device switching value synchronously, further embodied the independence of collector systems.
The grounding resistance measurement aspect: the multiple middle-size and small-size earth point stake resistance of energy real time on-line monitoring, one-step installation, time saving and energy saving, and kept very high precision.Simultaneously, the utility model can be measured auxiliary current electrode resistance and interference source voltage, also has the real-time online function, data transmission to Surveillance center can be monitored, and can report to the police according to setting.
Description of drawings
Fig. 1 is the composition synoptic diagram of the utility model real time on-line monitoring system.
Fig. 2 damages the wiring diagram of on-off value data acquisition module for the utility model.
Fig. 3 is the measurement scheme synoptic diagram of the utility model stake resistance acquisition module.
Fig. 4 is the composition synoptic diagram of the utility model stake resistance acquisition module.
Fig. 5 is another composition synoptic diagram of the utility model stake resistance acquisition module.
Fig. 6-1 is the circuit diagram of first binding post.
Fig. 6-2 is the circuit diagram of communication module.
Fig. 6-3 is the circuit diagram of the 3rd binding post.
Fig. 6-4 is the microprocessor circuit synoptic diagram.
Fig. 6-5 is the circuit diagram of power management module.
Fig. 6-6 is the circuit diagram of interference source acquisition module.
Fig. 6-7 is the circuit diagram of constant current source injection module.
Fig. 6-8 is the circuit diagram of sampled voltage read module.
Fig. 6-9 is the circuit diagram of interference source processing module.
Fig. 7 is the process flow diagram of the utility model stake resistance real-time online measuring method.
Fig. 8 is that the software module in the microprocessor module is formed synoptic diagram in the utility model stake resistance acquisition module.
Fig. 9 proofreaies and correct connection diagram for measuring gear.
Connected mode synoptic diagram when Figure 10 is measurement of Grounding Resistance.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 1, the utility model has disclosed the on-off value data acquisition monitoring system that a kind of lightning protection device damages, and described system comprises some data acquisition system (DAS)s 100, server 200, some clients 300.Data acquisition system (DAS) 100 is gathered the status information of the switching value of corresponding lightning protection device damage, the resistance information of stake resistance respectively, can show in the lightning protection display device cashier's office in a shop of correspondence; Simultaneously, data acquisition system (DAS) 100 gathers the data of gathering to server 200, and operating personnel can be by the corresponding data in client 300 access servers 200 of long-range setting.Each lightning protection cabinet can arrange a data acquisition system 100, each data acquisition system (DAS) 100 gathers to server 200 by a harvester (machine of standing) 180 unified data with collection, certainly, a plurality of data acquisition system (DAS) 100 also can gather the data of gathering to server 200 by a plurality of harvesters (machine of standing) 180.
Data acquisition system (DAS) 100 comprises: damage on-off value data acquisition module, stake resistance acquisition module 140, data processing module (can be MUC110), display unit 120, Input Control Element.MUC110 connects damage on-off value data acquisition module, stake resistance acquisition module 140, display unit 120, Input Control Element respectively.Described display unit 120 is handled the whether resistance information etc. of normal information, stake resistance of back each switching value of lightning protection device in order to show through MUC110; Described Input Control Element is in order to the MUC110 input of control commands.
Each lightning protection cabinet is an independently lightning protection device alarm condition monitoring system, can be touch-screen by Input Control Element and display unit 120(Input Control Element and display unit 120) can carry out the setting of collector systems parameter; The status information of lightning protection device switching value can show at display unit 120 in real time synchronously; If network service is interrupted, lightning protection device damages the information that on-off value data acquisition module can be preserved collection automatically, and behind communication recovery the very first time be uploaded to server 200 in the remote monitoring center machine room.
See also Fig. 2, lightning protection device comprises that the capable n row of m are the switching value of matrix form arrangement (as being the switching value of 15 row, 6 row); Switching value D
AbBe defined as the capable b row of a switching value; Wherein, a, b are integer, a ∈ [1, m], b ∈ [1, n].
Damage on-off value data acquisition module and be the matrix form arrangement.Described damage on-off value data acquisition module comprises m capable connecting line, a n row connecting line, i capable connecting line K
iFirst port that connects the capable n of an i switching value, j row connecting line I
jSecond port that connects m switching value of j row; Wherein, i, j are integer, i ∈ [1, m], j ∈ [1, n].Simultaneously, i capable connecting line K
iOr j row connecting line I
j First diode 132 by correspondence connects switching value D
IjThe corresponding port of (being labeled as 131 among the figure).That is, each switching value 131 all connects one first diode 132, and each switching value 131 connects its corresponding capable connecting line, row connecting line respectively with the two ends of first diode, 132 combinations.
Described damage on-off value data acquisition module comprises that also m*n is the circuit self-checking circuit that matrix form is arranged, and namely each switching value is furnished with a circuit self-checking circuit, and each circuit self-checking circuit comprises second diode 133; Circuit self-checking circuit S
AbBe defined as the capable b column line of a self-checking circuit; Wherein, a, b are integer, a ∈ [1, m], b ∈ [1, n]; Circuit self-checking circuit S
IjAn end connect i capable connecting line K
i, the other end connects j row connecting line I
jThe direction that it is pointed out that first diode, 132 settings that second diode 133 is corresponding with it is opposite.As shown in Figure 2, in the present embodiment, an end of switching value 131 connects the capable connecting line of its correspondence, and the other end connects the positive pole of first diode 132; The negative pole of first diode 132 connects corresponding row connecting line; The positive pole of second diode 133 connects corresponding row connecting line, and the negative pole of second diode 133 connects corresponding capable connecting line.
The lightning protection device phenomenon of the failure has two kinds: the one, and line fault, the 2nd, lightning protection device fault.When system carries out the lightning protection device malfunction monitoring, must distinguish the type of fault, in order in time notify the maintainer, be convenient to the investigation of fault, improve the security of lightning-protection system.Consider that based on this point the utility model has disclosed the solution of an effective circuit self check of cover and lightning protection device malfunction monitoring.
Described damage on-off value data acquisition module comprises line fault selftest module, lightning protection device fault scanning module, can carry out two-way detection.
Described line fault selftest module is in order to detect the circuit faults itself; The line fault selftest module all is set to electronegative potential with the current potential of m capable connecting line and n row connecting line; Make a row connecting line I in n the row connecting line then successively
jCurrent potential be set to noble potential; If the circuit non-fault, the current potential of m capable connecting line should be height; This moment, then current potential was i low capable connecting line K if having electronegative potential to occur in m capable connecting line
iWith j current row connecting line I
jBetween the intersection region line fault appears.
Perhaps, described line fault selftest module all is set to electronegative potential with the current potential of m capable connecting line and n row connecting line; Make a capable connecting line K in m the capable connecting line then successively
iCurrent potential be set to noble potential; If the circuit non-fault, the current potential of n row connecting line should be height; This moment, then current potential was j low row connecting line I if having electronegative potential to occur in n row connecting line
jWith i current capable connecting line K
iBetween the intersection region line fault appears.
Described lightning protection device fault scanning module is in order to detect the lightning protection device fault; The current potential of m capable connecting line and n row connecting line all is set to noble potential; Make a row connecting line I in n the row connecting line then successively
jCurrent potential be set to electronegative potential; If the circuit non-fault, the current potential of m capable connecting line should be height; This moment, then current potential was i low capable connecting line K if m capable connecting line has electronegative potential to occur
iWith j current row connecting line I
jBetween the intersection region lightning protection device fault appears.
Perhaps, described lightning protection device fault scanning module all is set to noble potential with the current potential of m capable connecting line and n row connecting line; Make a capable connecting line K in m the capable connecting line then successively
iCurrent potential be set to electronegative potential; If the circuit non-fault, the current potential of n row connecting line should be height; This moment, then current potential was j low row connecting line I if n row connecting line has electronegative potential to occur
jWith i current capable connecting line K
iBetween the intersection region lightning protection device fault appears.
The switching value of the utility model lightning protection device damage and the composition of stake resistance real time on-line monitoring system have more than been introduced, the utility model also discloses the measuring method of above-mentioned measuring system in the switching value and stake resistance real time on-line monitoring system that disclose above-mentioned lightning protection device damage; Described method comprises switch acquisition step, the grounding resistance measurement step that lightning protection device damages.
The switch acquisition step that lightning protection device damages comprises the steps:
[step S1] is matrix form arrangement, switching value D with m capable connecting line, a n row connecting line of described damage on-off value data acquisition module
IjTwo ends respectively with i capable connecting line K
iAnd j row connecting line I
jConnect; I capable connecting line K
iOr j row connecting line I
jFirst diode by correspondence connects switching value D
IjCorresponding port; Wherein, i, j are integer, i ∈ [1, m], j ∈ [1, n].
[step S2] described lightning protection device fault scanning module detects the lightning protection device fault; The current potential of m capable connecting line and n row connecting line all is set to noble potential; Make a row connecting line I in n the row connecting line then successively
jCurrent potential be set to electronegative potential; If the circuit non-fault, the current potential of m capable connecting line should be height; This moment, then current potential was i low capable connecting line K if m capable connecting line has electronegative potential to occur
iWith j current row connecting line I
jBetween the point of crossing lightning protection device fault appears.
Perhaps, described lightning protection device fault scanning module all is set to noble potential with the current potential of m capable connecting line and n row connecting line; Make a capable connecting line K in m the capable connecting line then successively
iCurrent potential be set to electronegative potential; If the circuit non-fault, the current potential of n row connecting line should be height; This moment, then current potential was j low row connecting line I if n row connecting line has electronegative potential to occur
jWith i current capable connecting line K
iBetween the point of crossing lightning protection device fault appears.
[step S3] described line fault selftest module detects the circuit faults itself; The line fault selftest module all is set to electronegative potential with the current potential of m capable connecting line and n row connecting line; Make a row connecting line I in n the row connecting line then successively
jCurrent potential be set to noble potential; If the circuit non-fault, the current potential of m capable connecting line should be height; This moment, then current potential was i low capable connecting line K if having electronegative potential to occur in m capable connecting line
iWith j current row connecting line I
jBetween the point of crossing line fault appears.
Perhaps, described line fault selftest module all is set to electronegative potential with the current potential of m capable connecting line and n row connecting line; Make a capable connecting line K in m the capable connecting line then successively
iCurrent potential be set to noble potential; If the circuit non-fault, the current potential of n row connecting line should be height; This moment, then current potential was j low row connecting line I if having electronegative potential to occur in n row connecting line
jWith i current capable connecting line K
iBetween the point of crossing line fault appears.
[step S4] shows that by display unit whether normally process MUC110 handles back each switching value of lightning protection device information.
[step S5] by Input Control Element to the MUC110 input of control commands.
Below mainly introduce the stake resistance acquisition module of the utility model measuring system.See also Fig. 3, the utility model has disclosed the stake resistance acquisition module, injects steady current I by the auxiliary current utmost point, extremely takes out sampled voltage V at boosting voltage, suitably adjust the boosting voltage utmost point in the insertion point on ground, the stake resistance R=V/I that thinks equipment that can be similar to.Simultaneously the stake resistance acquisition module also provides communication interface to be connected with remote monitoring terminal, can intelligent management equipment and the ground state of buildings by remote monitoring terminal.
See also Fig. 4, the utility model stake resistance acquisition module comprises stake resistance on-line measurement device and remote monitoring terminal 9; Stake resistance on-line measurement device comprises interference source processing module 1, communication module 2, grounding resistance measurement module 3, power management module 4, constant current source injection module 5, sampled voltage read module 6, interference source acquisition module 7, microprocessor 8; Described microprocessor 81 connects interference source processing module 1, communication module 2, grounding resistance measurement module 3, power management module 4, constant current source injection module 5, sampled voltage read module 6, interference source acquisition module 7 respectively and also is connected with remote monitoring terminal 9.Remote monitoring terminal 9 all right Connection Service devices are sent to Monitoring Data in the server.
A side has 3 lines in stake resistance on-line measurement device, and opposite side has 4 lines; In the present embodiment, 1. root be+the 24v power lead; 2. root be ground wire; 3., 4. root is the RS485 interface line; 5. root be auxiliary current utmost point interface line C
(H)6. root be boosting voltage utmost point interface line P
(S)7. root be earthing pole interface line E.
Described power management module 4 is used to measuring system that power supply is provided; Described constant current source injection module 5 provides constant current source or closes constant current source under the control of microprocessor 8.Interference source acquisition module 7 is measured interference source voltage in order to accept the control of microprocessor 8.Interference source processing module 1 is accepted the control of microprocessor 8, carries out the adjustment of sampling voltage benchmark according to interference source.Described sampled voltage read module 6 is accepted the control of microprocessor 8, measures sampled voltage.Described grounding resistance measurement module 3 is accepted the control of microprocessor 8, and the sampled voltage that measures according to described sampled voltage read module 6 calculates stake resistance.
See also Fig. 5, except the module that Fig. 4 describes, described measuring system also comprises cable module 10, interface line module 11.Below respectively each module is done further and introduced.
Seeing also Fig. 6-1, in the present embodiment, cable module 1 comprises+2 of 2 of 24v power input lines and RS485 order wires.See also Fig. 6-2, communication module 2 has used integrated circuit U1 (MAX485) to realize RS485 communication, makes transmission range farther, strong interference immunity.Grounding resistance measurement module 3 is the software systems in microprocessor 8 operations.
See also Fig. 6-5, power management module 4 comprises four fractions: 1) power protecting circuit; Adopt Transient Suppression Diode D1 in parallel (SMAJ30A) and series connection insurance resistance F1, prevent overvoltage and thunderbolt.2) a DC/DC conversion control circuit; Adopt integrated circuit (IC) 1 (ICI34063) to realize, give its Vss and Cv pin ground connection, generation+7v.3) the 2nd DC/DC conversion control circuit; Adopt IC2 (ICI34063) integrated circuit to realize, give its Vss and Cv pin earth-free, generation-5v.4) three-terminal voltage-stabilizing circuit; Adopt U3 (LM1117DT-5) integrated circuit, generation+5v.
See also Fig. 6-7, constant current source injection module 5 comprises four parts: 1) constant current source on-off circuit; Adopt triode Q2 (8550) and triode Q3 (8050) design on-off circuit.2) operational amplification circuit; Adopt operational amplifier U4A (LM2904) to produce constant voltage circuit, thereby guarantee the stable of electric current.3) current stabilizing circuit; Adopt triode Q5 (BCX53-16) design, cut-off state does not produce constant current source, and conducting state is the stable also output state that produces of constant current source.4) negative level suppresses circuit; Adopt Transient Suppression Diode D2 (SMAJ30A) and D3 (SMAJ30A) to constitute negative level and suppress circuit.
See also Fig. 6-6, interference source acquisition module 6 comprises two parts: 1) voltage follower circuit; Adopt operational amplifier U4B (LM2904) to produce constant voltage circuit, at ZGL pin place, namely the V2 point reads interference source voltage for U2.2) interference source Acquisition Circuit; Adopt R28, R38, C15 to constitute the interference source Acquisition Circuit, interference source is incorporated into U4B.
See also Fig. 6-8, sampled voltage read module 7 comprises three parts: 1) operational amplification circuit; Adopt U5A (LM2904) to amplify, improve measurement sensitivity and the accuracy of U2.2) large power, electrically resistance circuit; Adopt 4 resistance and string mode also to form a high-power resistance, improve the serviceable life of resistance.3) 10 Ω/100 Ω range driving switch circuit; Adopt Q4 (2N7002) to remove to read sample voltage, carry out the control of range gear.
See also Fig. 6-9, the interference source processing module is carried out the adjustment of sampling voltage benchmark based on interference source is long-pending; Adopt controlled AR1 (X9312) digital regulation resistance and U5B (LM2904) to carry out the voltage reference adjustment.
As shown in Figure 9, in resistance R
3The place connects 10 Ω, and 100 Ω resistance carry out 10 Ω of measurement mechanism respectively, and 100 Ω gears are from normal moveout correction; This function is finished before stake resistance on-line measurement device dispatches from the factory.Wherein, R1=100 Ω; R2=100 Ω; R3=10 Ω/100 Ω.
See also Fig. 6-3, interface line module 8 comprises three lines, is respectively injector interface line C (H), boosting voltage utmost point interface line P (S), earthing pole interface line E.
See also Fig. 6-4, microprocessor 8 adopts PIC18F4550 as microprocessor.In the present embodiment, described microprocessor 8 specifically comprises constant current source control module, interference source collection control module, first judging unit, sampled voltage measure-controlling unit, interference source processing unit, grounding resistance measurement control module, auxiliary current electrode resistance measure-controlling unit; Certainly, grounding resistance measurement module 3 also can be the software systems in the microprocessor 8.
Wherein, the constant current source control module is in order to control constant current source injection module injection constant current source electric current I or the constant current source electric current I is closed; Interference source is gathered control module and is measured interference source voltage in order to control the interference source acquisition module; First judging unit in order to the interference source voltage judging the interference source acquisition module and measure whether greater than setting value V10; The sampled voltage measure-controlling unit is measured sampled voltage in order to control described sampled voltage read module; The interference source processing unit carries out the adjustment of sampled voltage benchmark according to interference source, in order to the moving reference power supply, make sampled voltage low ebb between 0 and ε between, wherein ε is for setting minimal value.The grounding resistance measurement control module calculates stake resistance in order to control described grounding resistance measurement module; Described grounding resistance measurement module is at first obtained under the situation of not injecting constant current source, the interference source voltage V that described sampled voltage read module measures
G1And the sampled voltage V of described sampled voltage read module measurement
Q1; Then obtain under the situation of injecting constant current source the interference source voltage V that described sampled voltage read module measures
G2With sampled voltage V
Q2; Then calculate efficiently sampling voltage V
q, V
q=V
Q1-V
Q2; Then calculate stake resistance R
d, R
d=V
q÷ I.Auxiliary current electrode resistance measure-controlling unit calculates the auxiliary current electrode resistance in order to control an auxiliary current electrode resistance measurement module; Auxiliary current electrode resistance measurement module calculates interference source voltage V
g, V
g=V
G1-V
G2; Then calculate auxiliary current electrode resistance R
z, R
z=V
g÷ I-R
d
The detailed process of hardware circuit work comprises:
1) power unit
2) measuring process
The workflow of one-shot measurement stake resistance is as follows:
U2 provides high level for pin DLEN, Q3 conducting, Q2 conducting, and Q5 ends, and the pin C place of Q5 is 0mA, does not inject constant current source; Interference source enters on the U4B by the pin ISEND of the 3rd binding post J3, through the voltage follow function of U4B, measures interference source V at the pin ZGJ of U2
g', i.e. the point of V2 among Fig. 3; Grounding resistance measurement software among Fig. 2 carries out V
g'＞18v judges, and if greater than 18v this workflow finish, otherwise then continue; U2 provides low level for pin DLEN, and Q3 ends, Q2 ends, the Q5 conducting, and the pin C place of Q5 is 20mA, injects constant current source; Interference source enters on the U4B by the pin ISEND of the 3rd binding post J3, through the voltage follow function of U4B, measures interference source V at the pin ZGJ of U2
g', i.e. the point of V2 among Fig. 3; Grounding resistance measurement software among Fig. 2 carries out V
g'＞18v judges, and if greater than 18v this workflow finish, can think that earth point connecting line or auxiliary current utmost point connecting line disconnect simultaneously, otherwise then continue; Pin IJS by the 3rd binding post J3 imports initial sampling voltage, through large power, electrically resistance circuit R11-R14, carries out signal by operational amplifier U5A and amplifies, and measures sampling voltage V at the pin A/D of U2
q', i.e. the point of V3 among Fig. 3; Grounding resistance measurement software among Fig. 2 is regulated the potentiometer of AR1, and then measures sampling voltage V at the pin A/D of U2
q', can make sampling voltage V up to the potentiometer resistance of AR1
q' satisfy
If can not satisfy then the end of this workflow, otherwise then continue; U2 provides high level for pin GAIN SEL, and Q4 ends, and namely current range gear is 100 Ω range gears, measures sampling voltage V at the pin A/D of U2
q', the grounding resistance measurement software among Fig. 2 is judged V
q', greater than 3.3v, then U2 provides low level for pin GAIN SEL, and the Q4 conducting namely changes 10 Ω range gears into, continues then, otherwise also continues; U2 provides high level for pin DLEN, Q3 conducting, Q2 conducting, and Q5 ends, and the pin C place of Q5 is 0mA, does not inject constant current source; Pin ZGJ at U2 measures interference source
Pin A/D at U2 measures sampling voltage
U2 provides low level for pin DLEN, and Q3 ends, Q2 ends, the Q5 conducting, and the pin C place of Q5 is 20mA, injects constant current source; Pin ZGJ at U2 measures interference source
Pin A/D at U2 measures sampling voltage
Grounding resistance measurement software among Fig. 2 is according to formula
Calculate effective interference source V
gGrounding resistance measurement software among Fig. 2 is according to formula
Calculate efficient sampling voltage V
qIf the efficiently sampling magnitude of voltage is 0 then thinks that boosting voltage utmost point connecting line disconnects; Grounding resistance measurement software among Fig. 2 is according to formula R
d=V
q÷ I calculates the effective grounding resistance R
dGrounding resistance measurement software among Fig. 2 is according to formula R
z=V
g÷ I-R
d, calculate effective auxiliary current electrode resistance R
zU2 provides high level for pin DLEN, Q3 conducting, Q2 conducting, and Q5 ends, and the pin C place of Q5 is 0mA, does not inject constant current source; Grounding resistance measurement software among Fig. 2 is with the result of calculation V of front
g, R
d, R
zPin 2,3 by the first binding post J1 is uploaded to the stake resistance monitoring terminal with the RS485 communication mode; Finish this grounding resistance measurement.This flow process 30s carries out once.
More than introduced the composition of stake resistance acquisition module in the utility model measuring system, the utility model also discloses the real-time online acquisition method of above-mentioned module when disclosing the stake resistance acquisition module.
The step of measurement of Grounding Resistance (and auxiliary current electrode resistance) is as follows:
Step S201: do not inject constant current source I, measure interference source V
g', if V
g'＞18v then withdraws from;
Step S202: inject constant current source I, measure interference source V
g', if V
g'＞18v then withdraws from, and can think that earth point connecting line or auxiliary current utmost point connecting line disconnect simultaneously;
Step S203: measure sampling voltage V
q', the moving reference power supply, make the sampling voltage low ebb between 0 and ε between, wherein ε is minimal value, carries out the moving reference power supply and makes
Be exactly for convenience of the integral and calculating sampling voltage;
Step S204: do not inject constant current source I, measure interference source
And sampling voltage
Step S205: inject constant current source I, measure interference source
And sampling voltage
Step S206: calculate interference source V
g,
Step S207: calculate sampling voltage V
q,
If the efficiently sampling magnitude of voltage is 0 then thinks that boosting voltage utmost point connecting line disconnects;
Step S208: calculate stake resistance R
d, R
d=V
q÷ I;
Step S209: calculate auxiliary current electrode resistance R
z, R
z=V
g÷ I-R
d
Step S210: do not inject constant current source I.
Its particular flow sheet as shown in Figure 7; Below according to the flow process of Fig. 7 step by step provide detailed description.
[first step] beginning
Begin to carry out grounding resistance measurement.
[second step] do not inject constant current source
In Fig. 3, microprocessor controls whether produce constant current source by triode Q2, the Q3 of constant current source injection module 5.This step provides high level to end by triode Q5 at DLEN end, thereby does not produce constant current source, and just the V1 electric current of ordering is 0mA.
[the 3rd step] measures interference source V
g'
In Fig. 6-7, when V1 point electric current was 0mA, among Fig. 6-6, microprocessor was measured the voltage that V2 is ordered, i.e. interference source V
g'.
[the 4th step] judges V
g'＞18v
Judge V
g'＞18v, if greater than 18v then interference source can influence the stable of constant current source, the grounding resistance measurement result is just inaccurate so, so must abandon test, jumps to for the 24 step.
[the 5th step] injects constant current source I
Microprocessor provides low level allow triode Q5 conducting at DLEN end, thereby produces constant current source, and just the electric current that V1 is ordered among Fig. 6-7 is 20mA, i.e. I=20mA.
[the 6th step] measures interference source V
g'
In Fig. 6-7, when V1 point electric current was 20mA, among Fig. 6-6, microprocessor was measured the voltage that V2 is ordered, i.e. interference source V
g'.
[the 7th step] judges V
g'＞18v
Judge V
g'＞18v, if greater than 18v then interference source can influence the stable of constant current source, the grounding resistance measurement result is just inaccurate so, so must abandon test, can think that earth point connecting line or auxiliary current utmost point connecting line disconnect, and jump to for the 24 step simultaneously.
[the 8th step] measures sampling voltage V
q'
In Fig. 6-7, when V1 point electric current is 20mA, through the processing of large power, electrically resistance circuit, 10 Ω/100 Ω range driving switch circuit, interference source treatment circuit, the voltage that V3 is ordered among the microprocessor survey sheet 6-8, i.e. interference source V
q'.
[the 9th step] moving reference power supply
By the interference source treatment circuit, the moving reference power supply, trimmer potentiometer AR1 allows its resistance can make sampling voltage
[the tenth step] judged
Judge V
qWhether the low ebb of ' waveform is in
, if then continue; Otherwise, jumped to for the 24 step.
[the 11 step] adjusts the range gear
Suppose at 100 Ω range gears, inject constant current source, read sampling voltage, if greater than 3.3v, then change 10 Ω range gears into; Otherwise do not change.
[the 12 step] do not inject constant current source
Microprocessor provides high level to end by triode Q5 at the DLEN end, thereby does not produce constant current source, and just the electric current that V1 is ordered in Fig. 6-7 is 0mA.
[the 13 step] measures interference source
In Fig. 6-7, when V1 point electric current was 0mA, among Fig. 6-6, microprocessor was measured through the V2 point voltage after the adjustment of sampling voltage benchmark, i.e. interference source
[the 14 step] measures sampling voltage
In Fig. 6-7, when V1 point electric current was 0mA, microprocessor was measured through V3 point voltage, i.e. interference source among the Fig. 6-8 after the adjustment of sampling voltage benchmark
[the 15 step] injects constant current source I
Microprocessor provides low level to allow triode Q5 end at the DLEN end, thereby produces constant current source, and just the electric current that V1 is ordered among Fig. 6-7 is 20mA.
[the 16 step] measures interference source
In Fig. 6-7, when V1 point electric current was 20mA, microprocessor was measured through V2 point voltage, i.e. interference source among the Fig. 6-6 after the adjustment of sampling voltage benchmark
[the 17 step] measures sampling voltage
In Fig. 6-7, when V1 point electric current was 20mA, microprocessor was measured through V3 point voltage, i.e. interference source among the Fig. 6-8 after the adjustment of sampling voltage benchmark
[the 18 step] calculates interference source
V
g=V
G1-V
G2
According to the measurement result of front, using formula
Calculate effective V
g
[the 19 step] calculates sampling voltage
V
q=V
Q1-V
Q2
According to the measurement result of front, using formula
, calculate effective V
qIf the efficiently sampling magnitude of voltage is 0 then thinks that boosting voltage utmost point connecting line disconnects.
[the 20 step] calculates stake resistance R
d=V
q÷ I
According to the measurement result of front, using formula R
d=V
q÷ I calculates effective R
d
[the 21 step] calculates auxiliary current electrode resistance R
z=V
g÷ I-R
d
According to the measurement result of front, using formula R
z=V
g÷ I-R
d, calculate effective R
z
[the 22 step] do not inject constant current source
In Fig. 6-7, microprocessor provides high level to end by triode Q5 at the DLEN end, thereby does not produce constant current source, and just the electric current that V1 is ordered among Fig. 6-7 is 0mA.
[the 23 step] output result of calculation
Result of calculation V with the front
g, R
d, R
zBe uploaded to the stake resistance monitoring terminal by the RS485 interface.
[the 24 step] finishes
Finish this grounding resistance measurement.
This flow process 30s carries out once (certainly setting-up time at interval) as required.
Embodiment two
The difference of present embodiment and embodiment one is that in the present embodiment, lightning protection device comprises the capable switching value of m, altogether s switching value; The quantity of every capable switching value is identical or different.
In the present embodiment, in each row switching value, delegation's switching value comprises n switching value at most; Switching value D
AbBe defined as the capable b row of a switching value; Wherein, a, b are integer, a ∈ [1, m], b ∈ [1, n].
Described damage on-off value data acquisition module comprises m capable connecting line, a n row connecting line, switching value D
IjTwo ends respectively with i capable connecting line K
iAnd j row connecting line I
jConnect; Simultaneously, i capable connecting line K
iOr j row connecting line I
jFirst diode by correspondence connects switching value D
IjCorresponding port; Wherein, i, j are integer, i ∈ [1, m], j ∈ [1, n].
Described lightning protection device fault scanning module is in order to detect the lightning protection device fault; The current potential of m capable connecting line and n row connecting line all is set to noble potential; Make a row connecting line I in n the row connecting line then successively
jCurrent potential be set to electronegative potential; If the circuit non-fault, the current potential of m capable connecting line should be height; This moment, then current potential was i low capable connecting line K if m capable connecting line has electronegative potential to occur
iWith j current row connecting line I
jBetween the point of crossing lightning protection device fault appears.
Perhaps, described lightning protection device fault scanning module all is set to noble potential with the current potential of m capable connecting line and n row connecting line; Make a capable connecting line K in m the capable connecting line then successively
iCurrent potential be set to electronegative potential; If the circuit non-fault, the current potential of n row connecting line should be height; This moment, then current potential was j low row connecting line I if n row connecting line has electronegative potential to occur
jWith i current capable connecting line K
iBetween the point of crossing lightning protection device fault appears.
Preferably, described damage on-off value data acquisition module also comprises s circuit self-checking circuit, and namely each switching value is furnished with a circuit self-checking circuit, and each circuit self-checking circuit comprises second diode; Circuit self-checking circuit S
AbBe defined as the capable b column line of a self-checking circuit; Wherein, a, b are integer, a ∈ [1, m], b ∈ [1, n]; Circuit self-checking circuit S
IjAn end connect i capable connecting line K
i, the other end connects j row connecting line I
jThe direction that first diode that second diode is corresponding with it arranges is opposite.
Described line fault selftest module is in order to detect the circuit faults itself; The line fault selftest module all is set to electronegative potential with the current potential of m capable connecting line and n row connecting line; Make a row connecting line I in n the row connecting line then successively
jCurrent potential be set to noble potential; If the circuit non-fault, the current potential of m capable connecting line should be height; This moment, then current potential was i low capable connecting line K if having electronegative potential to occur in m capable connecting line
iWith j current row connecting line I
jBetween the point of crossing line fault appears.
Perhaps, described line fault selftest module all is set to electronegative potential with the current potential of m capable connecting line and n row connecting line; Make a capable connecting line K in m the capable connecting line then successively
iCurrent potential be set to noble potential; If the circuit non-fault, the current potential of n row connecting line should be height; This moment, then current potential was j low row connecting line I if having electronegative potential to occur in n row connecting line
jWith i current capable connecting line K
iBetween the point of crossing line fault appears.
Embodiment three
The difference of present embodiment and embodiment one is that in the present embodiment, in the stake resistance real time on-line monitoring, the software function module of microcontroller is formed as shown in Figure 8; Below each module among Fig. 8 is described.
1) constant current source switch control
This module mainly is responsible for control and whether is imported constant current source, and the constant current source of this device is 20mA.
2) measure constant current source
This module is responsible for that V1 point reads constant current source from Fig. 6-7, simultaneously also the dispatch from the factory self-correction of preceding constant current source of generator.
3) measure interference source
Whether excessive this module is at the situation of injecting constant current source and the not injecting constant current source interference source that judges, this device with+18v is boundary, if excessive then can not measurement of Grounding Resistance; If the boundary of being no more than is then 4) and 5) after the step, not injecting constant current source and injecting under the situation of constant current source and measure interference source, give 7) step calculates that data are provided.
4) the range gear is identified automatically
This module has the function of automatic identification stake resistance range, if stake resistance surpasses 10 Ω, then selects 100 Ω gears to measure, if be no more than, then selects 10 Ω gears to measure.The measurement range of this device is 0 Ω～100 Ω.
5) interference source is handled
Integral and calculating is handled interference source for convenience, adjusts the sampling voltage benchmark, the end product of sampling voltage preferably is not negative, so will adjust initial sampling voltage, the low ebb of its waveform is adjusted into greater than 0 less than ε, ε be one greater than 0 minimal value.This module mainly is responsible for the adjustment of sampling voltage.
6) measure sampling voltage
This module is at first measured sampling voltage, carries out the voltage reference adjustment then; Carry out sampling voltage in the situation of not injecting and inject constant current source then and measure, in order to calculate efficient sampling voltage.
7) calculate interference source
This module is responsible for according to 3) interference source measured calculates effective interference source.
8) calculate stake resistance
This module is according to 6) efficient sampling voltage and the constant current source extrapolated, calculate effective grounding resistance.
9) calculate the auxiliary current electrode resistance
This module is according to 7) the effective interference source, constant current source and the effective grounding resistance that calculate, calculate the auxiliary current electrode resistance.
10) communication module
This module is responsible for receiving the instruction of stake resistance monitoring terminal, simultaneously interference source, stake resistance, the auxiliary current electrode resistance of calculating is uploaded to the stake resistance monitoring terminal.
Embodiment four
The difference of present embodiment and embodiment one is, in the present embodiment, can set the stake resistance alarm threshold value, and when stake resistance surpasses threshold value, measurement mechanism will be reported to the police.
See also Figure 10, C
(H)Be electric current utmost point interface, P
(S)Be that boosting voltage utmost point interface, E are the ground wire interfaces; During the actual measurement stake resistance, C
(H)Be to be connected P with the injector ground rod
(S)Be to be connected with the sampled voltage ground rod, E directly is connected with the ground wire of equipment or buildings.This measurement mechanism provides the RS485 mode to link to each other with the stake resistance monitoring terminal.At stake resistance monitoring terminal operational monitoring software, just can be implemented in line real time on-line monitoring and historical query function, as dynamic demonstration, alarm indication, historical data read, consult, preserve, function such as printing.
According to the result of interference source, auxiliary current electrode resistance, grounding resistance measurement, the stake resistance collection result can be divided into nine kinds of states, specifically as shown in table 1.
Nine kinds of states of table 1 grounding resistance measurement
Annotate: except installation and measured value be not less than the setting value, all the other states occur 5 times continuously and also can report to the police.
According to nine kinds of states of table 1, the stake resistance monitoring terminal dynamically shows stake resistance resistance, interference source voltage, the auxiliary current electrode resistance that stake resistance on-line measurement terminal is uploaded; If state be state 2,5,6,7 and state 8 in the superthreshold situation, then report to the police.
In sum, switching value and stake resistance real time on-line monitoring system that the lightning protection device that the utility model proposes damages, can reduce the connection cable of switching value, improve the cleaning of lightning protection device inside, guarantee effective judgement of each switching value performance simultaneously, can accurately record stake resistance by real-time online in addition.The utility model especially is suitable for the railway signal lightning protection.
Here description of the present utility model and application is illustrative, is not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present utility model or essential characteristic, and the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (10)
1. the switching value and the stake resistance real time on-line monitoring system that damage of a lightning protection device, it is characterized in that, described measuring system comprises: server, one or more remote monitoring terminal, one or more data acquisition system (DAS), described server connect each remote monitoring terminal and each data acquisition system (DAS) respectively;
Described data acquisition system (DAS) comprises damages on-off value data acquisition module, stake resistance acquisition module, data processing module, and data processing module connects damage on-off value data acquisition module, stake resistance acquisition module respectively.
2. the switching value and the stake resistance real time on-line monitoring system that damage of lightning protection device according to claim 1 is characterized in that:
Described damage on-off value data acquisition module comprises on-off value data acquisition unit, the data processing unit that is the matrix form arrangement, and described data processing unit connects the on-off value data acquisition unit;
Lightning protection device comprises the capable switching value of m, altogether s switching value; The quantity of every capable switching value is identical or different, and in each row switching value, delegation's switching value comprises n switching value at most; Switching value D
AbBe defined as the capable b row of a switching value; Wherein, a, b are integer, a ∈ [1, m], b ∈ [1, n];
Described on-off value data acquisition unit comprises m capable connecting line, a n row connecting line, switching value D
IjTwo ends respectively with i capable connecting line K
iAnd j row connecting line I
jConnect; Simultaneously, i capable connecting line K
iOr j row connecting line I
jFirst diode by correspondence connects switching value D
IjCorresponding port; Wherein, i, j are integer, i ∈ [1, m], j ∈ [1, n].
3. the switching value and the stake resistance real time on-line monitoring system that damage of lightning protection device according to claim 2 is characterized in that:
Described data processing unit comprises lightning protection device fault scanning module, in order to carry out obtaining of switching value status information by described on-off value data acquisition unit, realizes the detection of lightning protection device fault.
4. the switching value and the stake resistance real time on-line monitoring system that damage of lightning protection device according to claim 2 is characterized in that:
Described on-off value data acquisition unit also comprises s circuit self-checking circuit, and namely each switching value is furnished with a circuit self-checking circuit, and each circuit self-checking circuit comprises second diode; Circuit self-checking circuit S
AbBe defined as the capable b column line of a self-checking circuit; Wherein, a, b are integer, a ∈ [1, m], b ∈ [1, n]; Circuit self-checking circuit S
IjAn end connect i capable connecting line K
i, the other end connects j row connecting line I
jThe direction that first diode that second diode is corresponding with it arranges is opposite.
5. the switching value and the stake resistance real time on-line monitoring system that damage of lightning protection device according to claim 2 is characterized in that:
Described lightning protection device comprises that m*n is the switching value that matrix form is arranged, i.e. s=m*n; Described data acquisition unit comprises m*n the circuit self-checking circuit that is the matrix form arrangement.
6. the switching value and the stake resistance real time on-line monitoring system that damage of lightning protection device according to claim 1 is characterized in that:
Described stake resistance acquisition module comprises microprocessor module, constant current source injection module, sampled voltage read module, grounding resistance measurement module; Described microprocessor module connects constant current source injection module, sampled voltage read module, grounding resistance measurement module respectively;
Described constant current source injection module provides constant current source or closes constant current source under the control of microprocessor module;
Described sampled voltage read module is accepted the control of microprocessor module, measures sampled voltage;
Described grounding resistance measurement module is accepted the control of microprocessor module, and the sampled voltage that measures according to described sampled voltage read module obtains stake resistance.
7. the switching value and the stake resistance real time on-line monitoring system that damage of lightning protection device according to claim 6 is characterized in that:
Described stake resistance acquisition module also comprises the interference source acquisition module that is connected with microprocessor module, in order to accept the control of microprocessor module, interference source voltage is measured.
8. the switching value and the stake resistance real time on-line monitoring system that damage of lightning protection device according to claim 7 is characterized in that:
Described stake resistance acquisition module also comprises the interference source processing module that is connected with microprocessor module, adopts controlled digital regulation resistance AR1 and four-operational amplifier U5B; Realize work for the treatment of to interference source by digital regulation resistance AR1 and four-operational amplifier U5B;
Described interference source processing module adopts controlled digital regulation resistance AR1 and four-operational amplifier U5B to carry out the voltage reference adjustment.
9. the switching value and the stake resistance real time on-line monitoring system that damage of lightning protection device according to claim 1 is characterized in that:
Described acquisition system also connects a display module, and display module is connected with data processing module, in order to show relevant information.
10. the switching value and the stake resistance real time on-line monitoring system that damage of lightning protection device according to claim 1 is characterized in that:
Described data acquisition system (DAS) gathers the data of gathering to server by harvester.
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|---|---|---|---|
| CN 201320112594 CN203149054U (en) | 2013-03-12 | 2013-03-12 | Real-time on-line monitoring system monitoring lightning protection device damaged switch value and ground resistance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730358A (en) * | 2013-12-19 | 2015-06-24 | 孙巍巍 | Novel lightning-protection detection system |
| CN105866553A (en) * | 2016-04-27 | 2016-08-17 | 天津鑫源达泰建筑工程有限公司 | Instrument and method for on-line detection of ground resistor |
| CN105954632A (en) * | 2016-07-01 | 2016-09-21 | 国网江苏省电力公司宿迁供电公司 | Zinc oxide lightning arrester on-line monitoring and diagnostic method |
| CN107643441A (en) * | 2017-08-16 | 2018-01-30 | 芜湖市凯鑫避雷器有限责任公司 | A kind of electric ceramic lightning arrester is grounded high current alarm device |
| CN110514903A (en) * | 2019-09-29 | 2019-11-29 | 国网河南省电力公司濮阳供电公司 | Ground resistance state evaluation and on-line early warning cloud monitoring system |
-
2013
- 2013-03-12 CN CN 201320112594 patent/CN203149054U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730358A (en) * | 2013-12-19 | 2015-06-24 | 孙巍巍 | Novel lightning-protection detection system |
| CN104730358B (en) * | 2013-12-19 | 2018-02-13 | 孙巍巍 | A kind of Novel lightning-proof detecting system |
| CN105866553A (en) * | 2016-04-27 | 2016-08-17 | 天津鑫源达泰建筑工程有限公司 | Instrument and method for on-line detection of ground resistor |
| CN105954632A (en) * | 2016-07-01 | 2016-09-21 | 国网江苏省电力公司宿迁供电公司 | Zinc oxide lightning arrester on-line monitoring and diagnostic method |
| CN107643441A (en) * | 2017-08-16 | 2018-01-30 | 芜湖市凯鑫避雷器有限责任公司 | A kind of electric ceramic lightning arrester is grounded high current alarm device |
| CN110514903A (en) * | 2019-09-29 | 2019-11-29 | 国网河南省电力公司濮阳供电公司 | Ground resistance state evaluation and on-line early warning cloud monitoring system |
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Owner name: CHINA RAILWAY SIGNAL + COMMUNICATION SHANGHAI ENGI Free format text: FORMER NAME: CHINA RAILWAY SIGNAL + COMM. SHANGHAI ENGINEERING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 200436 No. 248 West Road, Zhabei District, Shanghai Patentee after: CHINA RAILWAY SIGNAL & COMMUNICATION SHANGHAI ENGINEERING BUREAU GROUP Co.,Ltd. Address before: 200436 No. 248 West Road, Zhabei District, Shanghai Patentee before: China Railway Signal & Communication Shanghai Engineering Group |
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