CN103058039B - Contactless elevator door lock, contactless elevator door lock controller and contactless elevator door lock control method - Google Patents

Abstract

The invention discloses a contactless elevator door lock comprising a fixed lock hook seat, a fixed lock hook, a movable lock hook seat and a movable lock hook. A contactless detecting module used for detecting the position of the movable lock hook and locking pressure of the fixed lock hook and the movable lock hook is arranged on the fixed lock hook seat. A contactless elevator door lock controller comprises an amplifying module, an A/D (analog/digital) conversion module, a circuit detecting module, an MCU (microprogrammed control unit) controller, a CAN (control area network) interface and on-off indicator lamps. A contactless elevator door lock control method includes judging an elevator door lock is locked when a distance sensor and a force sensor are simultaneously effectively triggered, and sending a control signal. The contactless controller is adopted to substitute for an existing contact controller, integral safety performance of the elevator is further improved and completed, and safety accidents caused by door lock breakdown are effectively reduced.

Description

A kind of contact pointless door lock of elevator, door lock of elevator controller and door lock of elevator control method

Technical field

The invention belongs to elevator technology field, particularly relate to a kind of contact pointless door lock of elevator, door lock of elevator controller and door lock of elevator control method.

Background technology

Elevator safety regulation and stipulation, has needed electric apparatus to verify after door lock is closed.Existing domestic and international door lock of elevator all adopts the form of contact, and it is that the method adopting door lock assembly action to drive this contact directly to contact realizes that lock hook closes checking, and door lock contact is assembled in the box of a relative closure.Its mode principle as shown in Figure 4.There is following potential safety hazard and deficiency in this door lock:

1. contact effectively contacts and not easily checks, maintaining cumbersome particularly high-rise time when door lock contact go bad or bad contact, need in layer to check, waste time and energy.

2. the requirement of existing door lock to adjustment is very high, as the meshing backlass of door lock hook, the amount of compression of contact etc. maintenance not in placely easily causes elevator faults.

3. the voltage of what existing loop of the door lock adopted usually is 110v, exceedes safety voltage, and when maintaining is generally hot line work, easily cause Danger Electric shock risk.

4. along with the increase of stop, wire resistance is increasing, door lock poor contact of contacts, and contact resistance increases gradually, and signal attenuation is accelerated, and not easily gathers door lock signal.

5. the aging plain conductor of line insulation is exposed easily makes door lock short circuit, thus make loop of the door lock conducting, there is foreign matter to drop on door lock contact in some occasions thus make door lock conducting, occurring that terraced phenomenon is walked in enabling, causing the serious elevator accident caused casualties.

6. contact and latch hook are two separate parts, and not at that time, contact is normal and latch hook Bite size may not meet safety standard, there is potential safety hazard in adjustment.

7. contact is subject to the impact of hoistway environment, causes contact corrosion or dust contact of many times accumulating dust all can cause poor contact of contacts as humidity is excessive.

Existing a kind of door lock contact detection device at present, this device is made up of multiple detecting unit, and each detecting unit is arranged on by corresponding door lock.This device only can macroscopic examination contact fault, but still needs every layer of inspection, until find that one deck in bad order, still more consuming time.

Summary of the invention

The object of the invention is the potential safety hazard and the deficiency that overcome existing door lock, improves and improve the safety performance of elevator entirety further, effectively reduces the safety misadventure caused due to latch failure.

The present invention for achieving the above object, adopts following technical scheme:

A kind of contact pointless door lock of elevator, comprises fixed lock hook seat, fixed lock hook, moveable lock hook seat and moveable lock hook, it is characterized in that: described fixed lock hook seat is provided with the sealed pressure of contact pointless detection module for the position and fixed lock hook and fixed lock hook of detecting moveable lock hook.

It is further characterized in that: described contact pointless detection module comprises rang sensor and force snesor.

A kind of contact pointless door lock of elevator controller, is characterized in that: it comprises amplification module, A/D modular converter, testing circuit module, MCU controller, CAN interface and break-make indicator lamp; The signal of force snesor amplifies again through A/D modular converter analogue to digital conversion input MCU controller through amplifying unit; The signal of rang sensor is through check circuit module input MCU controller; After MCU controller judges incoming signal computing through CAN interface output signal to CAN, and output signal controls the display of break-make indicator lamp.

It is further characterized in that: described contact pointless door lock of elevator controller power supply voltage is lower than 24V.

A kind of contact pointless door lock of elevator control method, comprises the steps:

(1) rang sensor detects the position of moveable lock hook, if moveable lock hook arrives the position of engaging with fixed lock hook, then rang sensor exports energizing signal; When the sealed pressure of force snesor detection fixed lock hook and fixed lock hook reaches setting value, force snesor exports energizing signal;

(2) energizing signal that exports of MCU controller receiving range sensor and force snesor, when to receive two energizing signal simultaneously, MCU controller judges that door lock is sealed, and out gate closure signal controls elevator operation; Otherwise then the energizing signal that exports of the due-in rang sensor such as continuation and force snesor is until door lock is sealed.

The present invention has following advantage:

1. that adopt is low voltage (below 24V), and safety, energy consumption is low.

2. adopt CAN communication technology, solve the loaded down with trivial details problem of wiring, and elevator main controller in machine room just can be checked through certain one deck door lock have fault, time saving and energy saving.

3. door lock controller there is the indicator lamp whether display two test items normally work, easily check and adjustment elimination latch failure, facilitate daily maintenance.

4. do not affect by line resistance, door lock signal decay is little.

5. can carry out Integrated Optimal Design with Room external signal, adopt serial communication technology, can apparatus for controlling elevator be optimized, have qualitative leap to whole apparatus for controlling elevator.

6. the detection module of door lock of the present invention and lock hook are interactional integrative-structures, lock hook engages but Bite size out of reach safety standard does not have signal output, also have a lock hook engagement force sense channel in addition, have Redundancy Design at secure context, add safety performance.

7. the such environmental effects such as large by hoistway humidity and dust is many, have also stopped door lock circuit by the phenomenon of short circuit.

Accompanying drawing explanation

Fig. 1 is contact pointless door lock of elevator view when not engaging.

View when Fig. 2 is the engagement of contact pointless door lock of elevator.

Fig. 3 is contact pointless door lock of elevator control principle drawing.

Fig. 4 is that prior art has contact door lock of elevator control principle drawing.

Fig. 5 is contact pointless door lock of elevator controller architecture block diagram.

Fig. 6 is contact pointless door lock of elevator control flow chart.

Detailed description of the invention

A contact pointless door lock of elevator as shown in Figure 1, 2, comprises dynamic lock hook 6, dynamic lock hook seat 3, roller I 2, roller II 4, lock hook 1, lock hook seat 11 contact pointless detection module 10, door lock controller 7.Contact pointless detection module 10 is arranged on lock hook point of engagement side, when dynamic lock hook 6 under stage clip 5 and own wt effect around roller I 2 axle center spinning movement fall and buckle lock hook 1 time, contact pointless detection module 10 detects the position (Bite size is more than or equal to 7mm) of lock hook and is applied to lock and hooks upward pressure and to be triggered when reaching requirement conducting, the signal produced passes to door lock controller 7, by the intelligent computing of MCU controller, export correct useful signal to elevator master control unit, make the safe operation of elevator energy.

The effect of contact pointless detection module is the electrical contact of alternative original door lock, inside modules is provided with position transduser and force snesor, position transduser detects the Bite size of lock hook, when dynamic lock hook and lock hook engage time, whether position transduser detects dynamic lock hook and puts in place, and lock hook puts that position transduser is triggered in place and conducting exports a signal; Force snesor moves lock hook and reaches setting value to the pressure that lock hooks and keep always when detecting lock hook engagement, force snesor is triggered and conducting also exports a signal.The position adjustable of contact pointless detection module and lock hook point of engagement, the pressure of detecting distance and detection also can set.

A contact pointless door lock of elevator controller as shown in Figure 5, it comprises amplification module, A/D modular converter, testing circuit module, MCU controller, CAN interface and break-make indicator lamp; The signal of force snesor amplifies again through A/D modular converter analogue to digital conversion input MCU controller through amplification module; The signal of rang sensor is through check circuit module input MCU controller; After MCU controller judges incoming signal computing through CAN interface output signal to CAN, and output signal controls the display of break-make indicator lamp.

The signal of door lock controller contact pointless detection module 10 output as shown in Figure 6.After controller receives the information of force snesor, amplified by the amplifier of electrical bridge of variable amplification, this amplifier controls signal to amplify suitable multiple by MCU controller.Signal after amplification accesses 24 δ-△ A/D converters, and MCU controller controls A/D converter and is converted into data-signal.MCU controller inside has one through the Reference data of calibration, when the result of A/D conversion is greater than these data, namely assert that first condition meets the demands.MCU controller receives the distance that rang sensor exports and puts in place after signal, after this signal is received by MCU controller, namely assert that second condition meets the demands.Only have two conditions all to meet the demands, just assert that door closes.Assert that namely will close gate signal by data-interface after closing the door sends into electric life controller.

Door lock controller 10 has the break-make display lamp of binary channel whether conducting, being convenient to door lock has during fault and judges to check.Door lock controller 10 uses CAN communication and elevator main controller to carry out logic operation as shown in Figure 3, and whether the action of intelligent decision door lock is effective, and loop of the door lock is short and sweet, and installation wiring is convenient.

Claims (3)

1. a contact pointless door lock of elevator controller, is characterized in that: it comprises amplification module, A/D modular converter, testing circuit module, MCU controller, CAN interface and break-make indicator lamp; The signal of force snesor amplifies again through A/D modular converter analogue to digital conversion input MCU controller through amplifying unit; The signal of rang sensor is through check circuit module input MCU controller; After MCU controller judges incoming signal computing through CAN interface output signal to CAN, and output signal controls the display of break-make indicator lamp.

2. contact pointless door lock of elevator controller according to claim 1, is characterized in that: described contact pointless door lock of elevator controller power supply voltage is lower than 24V.

3. adopt a contact pointless door lock of elevator control method for contact pointless door lock of elevator controller described in claim 1, comprise the steps:

(1) rang sensor detects the position of moveable lock hook, if moveable lock hook arrives the position of engaging with fixed lock hook, then rang sensor exports energizing signal; When the sealed pressure of force snesor detection fixed lock hook and fixed lock hook reaches setting value, force snesor exports energizing signal;

(2) energizing signal that exports of MCU controller receiving range sensor and force snesor, when to receive two energizing signal simultaneously, MCU controller judges that door lock is sealed, and out gate closure signal controls elevator operation; Otherwise then the energizing signal that exports of the due-in rang sensor such as continuation and force snesor is until door lock is sealed.