CN205257696U - Elevator safety loop fault location system - Google Patents

Elevator safety loop fault location system Download PDF

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Publication number
CN205257696U
CN205257696U CN201521063100.5U CN201521063100U CN205257696U CN 205257696 U CN205257696 U CN 205257696U CN 201521063100 U CN201521063100 U CN 201521063100U CN 205257696 U CN205257696 U CN 205257696U
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CN
China
Prior art keywords
switch
fault location
detection circuit
elevator
safety
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CN201521063100.5U
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Chinese (zh)
Inventor
余福斌
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苏州汇川技术有限公司
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Priority to CN201521063100.5U priority Critical patent/CN205257696U/en
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Publication of CN205257696U publication Critical patent/CN205257696U/en

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Abstract

The utility model provides an elevator safety loop fault location system, elevator safety loop includes the safety switch of a n series connection, N is for being greater than 2 integer, fault location system includes n -1 isolation detection circuit and main control board, and the input of a L isolation detection circuit be connected to a L safety switch and a L+1 safety switch's connecting wire on, the output is connected to elevator system's main control board, arbitrary floor display panel or sedan -chair roof nearby, L just is less than n's integer for more than or equal to 1, a n -1 isolation detection circuit has different codes and exports different signals according to different input states to the main control board. The utility model discloses a plurality of isolation detection circuit detect the voltage of each safety switch node respectively to collect above -mentioned voltage signal through the main control board and accomplish the automatic on -line detection.

Description

Elevator safety loop fault location system
Technical field
The utility model relates to elevator safety field, more particularly, relates to a kind of elevator safety loop faultNavigation system.
Background technology
Elevator is the large special equipment that integrates machinery, electrical equipment, and its structure is comparatively special. Because it belongs toIn manned vertical transportation means of transport, safe operation must be put in the first place. Transport for ensureing elevator safetyOK, many safety components (being safety switch) are housed respectively, example at each position of elevator Operation and controlAs peaces such as limiter of speed, safety tongs, emergency stop push button, emergency exit switch, pit switch, limit switchesTotal event. And the contact of above-mentioned safety component and relay in series elevator safety loop. Above-mentioned elevatorIn safety return circuit, on the one hand because the safety switch quantity of series connection is more, each peace spatially on the other handThe distribution of full switch comparatively disperses, for example, be distributed in respectively machine room, hoistway, sedan-chair top etc., once safety switchBreak down, need to spend a large amount of man power and materials and investigate.
As shown in Figure 1, be existingly to carry out elevator safety switch fault location by safety switch short-circuit methodSchematic diagram. This scheme utilizes the thought of the dichotomy of mathematics to carry out short circuit to safety switch, and in each safetyThe scope of constantly dwindling trouble point in the short circuit process of switch, first short circuit A1,2 of An detect,If have fault respectively short circuit A1,2 of Am and Am+1,2 of An detect, until find faultPoint. Safety switch short circuit method has that cost is little, simple to operate, positioning precision advantages of higher, uses at present ratioMore extensive. But this scheme also exists, detecting step is loaded down with trivial details is subject to the position of trouble point different and not with short circuit number of timesWith, and if short-circuited terminal does not remove in time, will relate to the normal operation of elevator device, even shadowRing personal safety.
As shown in Figure 2, be the existing schematic diagram that carries out elevator safety switch fault location by shunt-wound capacitance.This scheme increases shunt-wound capacitance C at each safety switch, then detects different capacitances by oscillating circuit trueRecognizing position corresponding to fault (due to the position difference of fault generation, thereby presents not elevator safety loopSame capacitance). But in the method, due to the existence of the parasitic parameter of cable, by the detection to resonance circuitPrecision exerts an influence.
As shown in Figure 3, be existing by and connect LED lamp and carry out the signal of elevator safety switch fault locationFigure. In the time that fault occurs, the state that presents different on and off according to LED lamp carrys out failure judgement safety switchPosition. But this scheme needs maintainer to enter the positions such as hoistway, the end, hole, sedan-chair top to be investigated, time-consumingEffort.
Utility model content
The technical problems to be solved in the utility model is, loaded down with trivial details for above-mentioned elevator safety loop fault locationProblem, a kind of new elevator safety loop fault location system is provided.
The technical scheme that the utility model solves the problems of the technologies described above is that a kind of elevator safety loop fault is providedNavigation system, described elevator safety loop comprises n the safety switch being connected in series, described n is greater than 2Integer, described fault location system comprises n-1 isolation detection circuit and master control borad, and L isolation inspectionThe input of slowdown monitoring circuit is connected on the connecting line of L safety switch and L+1 safety switch, outputEnd is connected to the master control borad of elevator device, arbitrary floor display board or sedan-chair top board, and described L is for being more than or equal to 1And be less than the integer of n; A described n-1 isolation detection circuit have different coding and according to different input states toMaster control borad output unlike signal.
In elevator safety loop fault location system described in the utility model, described isolation detection circuit existsWhen input terminal voltage is not less than preset value, export high level, and this isolation detection circuit input terminal voltage lower thanOutput low level when preset value.
In elevator safety loop fault location system described in the utility model, described floor display board passes through485 communication bus are connected to master control borad, and described sedan-chair top board is connected to master control borad by CAN communication bus.
In elevator safety loop fault location system described in the utility model, described safety switch is machine roomSafety switch, landing door safety switch, limiter of speed, safety tongs, emergency stop push button, emergency exit switch,Pit switch or limit switch.
In elevator safety loop fault location system described in the utility model, described master control borad is by detectingThe coding of each isolation detection circuit and output signal are confirmed the safety switch breaking down.
In elevator safety loop fault location system described in the utility model, each isolation detection circuit bagDraw together optocoupler, and the former limit of this optocoupler is connected to, and elevator safety loop, secondary connect master control borad, arbitrary floor is aobviousShow plate or sedan-chair top board.
Elevator safety loop fault location system of the present utility model has following beneficial effect: by multiple everyDetect respectively the voltage of each safety switch node from testing circuit, and collect above-mentioned voltage letter by master control boradNumber completing automatic on-line detects. By the utility model, enter hoistway, the end, hole, sedan-chair top without maintainerInvestigate and can position trouble point Deng position, not only time saving and energy saving, and also isolation detection circuit is alsoCan not affect the functional safety of elevator device.
Brief description of the drawings
Fig. 1 is the schematic diagram that existing safety switch short-circuit method carries out elevator safety switch fault location.
Fig. 2 is the existing schematic diagram that carries out elevator safety switch fault location by shunt-wound capacitance.
Fig. 3 be existing by and connect LED lamp and carry out the schematic diagram of elevator safety switch fault location.
Fig. 4 is the schematic diagram of the utility model elevator safety loop fault location system embodiment.
Fig. 5 is the schematic diagram that in Fig. 4, elevator safety loop fault location system carries out fault location.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawingAnd embodiment, the utility model is further elaborated. Should be appreciated that described herein concreteEmbodiment is only in order to explain the utility model, and is not used in restriction the utility model.
As shown in Figure 4, be the schematic diagram of the utility model elevator safety loop fault location system embodiment,Above-mentioned elevator safety loop comprises n the safety switch S being connected in series1~Sn, wherein n is greater than 2 integer.Above-mentioned safety switch is computer room safety switch, landing door safety switch, limiter of speed, safety tongs, stop in emergency byButton, emergency exit switch, pit switch or limit switch etc., for realizing elevator device security control. ThisElevator safety loop fault location system in embodiment comprises n-1 isolation detection circuit DI1~DIn-1AndMaster control borad 11.
Above-mentioned the 1st isolation detection circuit DI1Input be connected to the 1st safety switch S1With the 2nd peaceFull switch S2Connecting line X1, the 2nd isolation detection circuit DI1Input be connected to the 2nd safety switchS2With the 3rd safety switch S3Connecting line X2..., m isolation detection circuit DImInput connectReceive m safety switch SmWith m+1 safety switch Sm+1Connecting line Xm+1..., n-1Isolation detection circuit DIn-1Input be connected to n-1 safety switch Sn-1With n safety switch Sn'sConnecting line Xn-1, and this n-1 isolation detection circuit DI1~DIn-1Output is connected to respectively elevator device nearbyMaster control borad 11, arbitrary floor display board 12 or sedan-chair top board 13.
Above-mentioned floor display board 12 is connected to master control borad 11 by 485 communication bus, and sedan-chair top board 13 passes throughCAN communication bus is connected to master control borad 11, to realize and the communicating by letter of master control borad 11. This n-1 isolation detectionCircuit DI1~DIn-1There is different coding and export (directly or pass through to master control borad 11 according to different input statesAny in floor display board 12, sedan-chair top board 13) unlike signal. For example isolation detection circuit DILDefeatedEnter and when terminal voltage is not less than preset value, export high level (L is the arbitrary integer between 1~n-1) and this isolationTesting circuit DILIn input terminal voltage output low level during lower than preset value.
Because each isolation detection circuit has respectively unique coding, therefore can detect every by master control borad 11The state of one isolation detection circuit, and locate the safety open breaking down in conjunction with the coding of isolation detection circuitClose.
For example, as shown in Figure 5, as safety switch Sm-1When fault, the X of elevator safety loopm-2Place is high electricityPressure, Xm-1Place is low-voltage, and correspondingly, master control borad 11 records failure detector circuit DIm-2Output level beHigh level, failure detector circuit DIm-1Output level be low level. Accordingly, can determine safety switchSm-1Fault.
Especially, each isolation detection circuit comprises optocoupler, and the former limit of this optocoupler is connected to elevator safety and returnsRoad, secondary connect master control borad 11, arbitrary floor display board 12 or sedan-chair top board 13.
Above-mentioned elevator safety loop fault location system is by isolation detection circuit DI1~DIn-1Detect respectively eachThe voltage at individual safety switch tie point place, and collect above-mentioned voltage signal by master control borad 11 and complete automatic on-lineDetect, fault location is not only time saving and energy saving, but also can not affect the functional safety of elevator device.
The above, be only preferably detailed description of the invention of the utility model, but protection model of the present utility modelEnclose and be not limited to this, any be familiar with those skilled in the art the utility model disclose technology modelIn enclosing, the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model. CauseThis, protection domain of the present utility model should be as the criterion with the protection domain of claim.

Claims (6)

1. an elevator safety loop fault location system, described elevator safety loop comprises that n is connected in seriesSafety switch, described n is greater than 2 integer, it is characterized in that: described fault location system comprises n-1Individual isolation detection circuit and master control borad, and the input of L isolation detection circuit is connected to L peaceOn the connecting line of full switch and L+1 safety switch, output be connected to elevator device master control borad, appointOne floor display board or sedan-chair top board, described L is more than or equal to 1 and be less than the integer of n; Described n-1 isolation inspectionSlowdown monitoring circuit has different coding and exports unlike signal according to different input states to master control borad.
2. elevator safety loop fault location system according to claim 1, is characterized in that: described inIsolation detection circuit is exported high level in the time that input terminal voltage is not less than preset value, and this isolation detection circuit existsInput terminal voltage output low level during lower than preset value.
3. elevator safety loop fault location system according to claim 1, is characterized in that: described inFloor display board is connected to master control borad by 485 communication bus, and described sedan-chair top board connects by CAN communication busReceive master control borad.
4. elevator safety loop fault location system according to claim 1, is characterized in that: described inSafety switch be computer room safety switch, landing door safety switch, limiter of speed, safety tongs, emergency stop push button,Emergency exit switch, pit switch or limit switch.
5. elevator safety loop fault location system according to claim 1, is characterized in that: described inMaster control borad confirms by the coding and the output signal that detect each isolation detection circuit the safety open breaking downClose.
6. elevator safety loop fault location system according to claim 1, is characterized in that: eachIsolation detection circuit comprises optocoupler, and the former limit of this optocoupler is connected to elevator safety loop, secondary connects master controlPlate, arbitrary floor display board or sedan-chair top board.
CN201521063100.5U 2015-12-18 2015-12-18 Elevator safety loop fault location system CN205257696U (en)

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Application Number Priority Date Filing Date Title
CN201521063100.5U CN205257696U (en) 2015-12-18 2015-12-18 Elevator safety loop fault location system

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Application Number Priority Date Filing Date Title
CN201521063100.5U CN205257696U (en) 2015-12-18 2015-12-18 Elevator safety loop fault location system

Publications (1)

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CN205257696U true CN205257696U (en) 2016-05-25

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CN201521063100.5U CN205257696U (en) 2015-12-18 2015-12-18 Elevator safety loop fault location system

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109095298A (en) * 2018-08-21 2018-12-28 苏州汇川技术有限公司 Elevator device
CN110316627A (en) * 2018-03-28 2019-10-11 上海三菱电梯有限公司 Elevator safety system
WO2019205583A1 (en) * 2018-04-28 2019-10-31 苏州汇川技术有限公司 Elevator safety system and safety control method
CN110635313A (en) * 2018-06-22 2019-12-31 苏州汇川技术有限公司 Safety circuit wiring board and cable configuration system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110316627A (en) * 2018-03-28 2019-10-11 上海三菱电梯有限公司 Elevator safety system
WO2019205583A1 (en) * 2018-04-28 2019-10-31 苏州汇川技术有限公司 Elevator safety system and safety control method
CN110635313A (en) * 2018-06-22 2019-12-31 苏州汇川技术有限公司 Safety circuit wiring board and cable configuration system
CN109095298A (en) * 2018-08-21 2018-12-28 苏州汇川技术有限公司 Elevator device
CN109095298B (en) * 2018-08-21 2021-01-19 苏州汇川技术有限公司 Elevator system

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