CN205873545U - Elevator of terraced device of utensil lock - Google Patents
Elevator of terraced device of utensil lock Download PDFInfo
- Publication number
- CN205873545U CN205873545U CN201620836394.9U CN201620836394U CN205873545U CN 205873545 U CN205873545 U CN 205873545U CN 201620836394 U CN201620836394 U CN 201620836394U CN 205873545 U CN205873545 U CN 205873545U
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- China
- Prior art keywords
- car
- voltage
- bluetooth
- elevator
- bluetooth communication
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an elevator of terraced device of utensil lock, including the car, be used for controlling automatically controlled cabinet that the car goes up and down and send floor calling signal's mobile device to automatically controlled cabinet, all be equipped with bluetooth communication module in automatically controlled cabinet, mobile device and the car, automatically controlled cabinet passes through bluetooth communication module and is connected with mobile device and car radio communication respectively, bluetooth communication module include bluetooth chip, RF high -pass filter circuit and antenna, the bluetooth chip is connected with an oscillation circuit, and the bluetooth chip passes through RF high -pass filter circuit and antenna connection, still including being used for the MCU that is connected with sensor signal, MCU is connected with the 2nd oscillation circuit, and MCU passes through wire and bluetooth chip signal connection. The utility model is simple in operation, facilitate the use.
Description
Technical field
This utility model relates to a kind of elevator having lock ladder device.
Background technology
One layer of elevator is provided with lock ladder key switch, it is generally required to manually go to carry out lock ladder, then elevator drives towards base station, separately
Outward, multiple elevator is run simultaneously cause bigger waste at night or operation low peak period.
Utility model content
The purpose of this utility model is to provide a kind of elevator having lock ladder device, and it can solve of the prior art above-mentioned
Shortcoming.
This utility model is by the following technical solutions:
A kind of elevator having lock ladder device, including car, for controlling the electrical control cubicles of car lifting and sending to electrical control cubicles
The mobile device of floor call sign, is equipped with bluetooth communication in electrical control cubicles, mobile device and car, described electrical control cubicles is led to
Crossing bluetooth communication to be connected with mobile device and car radio communication respectively, described bluetooth communication includes bluetooth core
Sheet, RF high-pass filtering circuit and antenna, described Bluetooth chip connects the first oscillating circuit, and Bluetooth chip passes through RF high-pass filtering
Circuit is connected with antenna；Also include that the MCU for being connected with sensor signal, MCU connection has the second oscillating circuit, and MCU leads to
Cross wire to be connected with Bluetooth chip signal；Electrical control cubicles includes a relay, and described relay connects a display control board, passes through
The 2 of display control board JP1,3 switching value wiring pins connect, and described display display control board is located in described cab.
Apparatus for controlling elevator also includes motor and for controlling the converter of electric machine rotation, and described motor passes through cable and sedan-chair
Railway carriage or compartment connects, and electrical control cubicles includes master controller and master control bluetooth communication, described master control bluetooth communication, master controller, change
Frequently device and motor connect the most in succession, and wherein master control bluetooth communication carries out Bluetooth communication with outgoing call case or car.
The utility model has the advantages that: simple to operate, convenient use.
Accompanying drawing explanation
Below in conjunction with embodiment and accompanying drawing, this utility model is described in detail, wherein:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is theory diagram of the present utility model.
Fig. 3 is the circuit block diagram of the bluetooth communication in Fig. 1.
Fig. 4 is the circuit block diagram of mu balanced circuit.
Fig. 5 is theory diagram of the present utility model.
Fig. 6 is the circuit block diagram of relay of the present utility model.
Fig. 7 is the circuit diagram of module of automatically reseting.
Detailed description of the invention
Of the present utility model detailed description of the invention be expanded on further below in conjunction with the accompanying drawings:
As shown in Figure 1 to Figure 2, a kind of elevator having lock ladder device, including car 3, for controlling the automatically controlled of car lifting
Cabinet 1 and the mobile device 2 to electrical control cubicles transmission floor call sign.It is equipped with bluetooth in electrical control cubicles 1, outgoing call case 2 and car 3 to lead to
Letter module, electrical control cubicles 1 is connected with mobile device 2 and car 3 radio communication respectively by bluetooth communication.Described elevator controlling
System also includes motor 5 and for controlling the converter 4 that motor 5 rotates, and motor 5 is connected with car 3 by cable；Electrical control cubicles 1
Including master controller 6 and master control bluetooth communication 7, master control bluetooth communication 7, master controller 6, converter 4 and motor 5 depend on
Secondary in succession connecting, wherein master control bluetooth communication 7 carries out Bluetooth communication with mobile device 2 or car 3.Master control Bluetooth communication mould
Block 7 receives the Bluetooth control signal from mobile device 2 or car 3, and controls sedan-chair according to signal by converter 4 and motor 5
The railway carriage or compartment 3 operation in hoistway.Mobile device 2 includes key-press module 10, microcontroller 9 and leads to for carrying out bluetooth with electrical control cubicles 1
The outgoing call bluetooth communication 8 of letter, described microcontroller 9 is connected with key-press module 10 and outgoing call bluetooth communication 8 respectively.Take advantage of
Visitor's touch-call car 3, microcontroller 9 is sent to electrical control cubicles 1 by outgoing call bluetooth communication 8 after call signal being processed.Blue
The feature of tooth communication low latency makes electrical control cubicles quickly to respond, and reduces the time that passenger waits.Car 3 includes elevator car
11, for receiving car bluetooth communication 12 and the button group 14 of the Bluetooth signal from other bluetooth communication, described
Elevator car 11 is connected with car bluetooth communication 12 and button group 14 respectively.Passenger passes through button group in car 3
14 set floor to be arrived, and elevator car 11 is sent to electrical control cubicles 1 by car bluetooth communication 12 after processing signal.Electricity
Control cabinet 1 is controlled the car 3 operation in hoistway according to signal by converter 4 and motor 5.Described car 3 also includes for showing
The display module 13 of floor information, described display module 13 is connected with elevator car 11.Car bluetooth communication 12 receives
From the signal of master control bluetooth communication 7, and on display module 13, show floor, car 3 side by elevator car 11
To etc. information；Electrical control cubicles includes a relay, and described relay connects a display control board, by display control board JP1's
2,3 switching value wiring pins connect, and described display display control board is located in described cab.
Bluetooth of the present utility model lock ladder includes elevator display control board, wireless external calling device (bluetooth module, WiFi mould
Block), relay and mobile device；When elevator is in positive informal dress. during business state, management personnel send lock by mobile device software
Ladder instruction, makes the wireless external calling device (bluetooth module or WIFI module) being arranged on elevator display control board pass through side wireless communication
Formula receives this instruction, then by the JP1 lock ladder the 2 of switch interface of display control board, 3 output switch parameter, controls elevator and enter lock
State withdrawn by ladder；Lock ladder is withdrawn under state, and lift car is out of service, closes normal elevator motion control function, makes elevator
" lock ladder ", the call that in now elevator can receive but no longer respond external-calling elevator external calling device and lift car, screening device sends
Instruction.
Connecting wireless device by cell phone software, click on the lock ladder button on cell phone software, signal is sent to wireless device,
Then 2, the 3 switching value pins closed to the JP1 of display control board are exported by relay.Close locking ladder function soft by mobile phone
Part connects wireless device, clicks on the lock ladder button on cell phone software, and signal is sent to wireless device, is then exported by relay
2, the 3 switching value pins disconnected to the JP1 of display control board.
As it is shown on figure 3, bluetooth communication includes Bluetooth chip, RF high-pass filtering circuit and antenna, described Bluetooth chip
Connecting and have the first oscillating circuit, Bluetooth chip is connected with antenna by RF high-pass filtering circuit；Also include for believing with sensor
Number MCU, MCU that connect connect the second oscillating circuit, and MCU is connected with Bluetooth chip signal by wire.In circuit first
Oscillating circuit is the reference oscillation circuit of Bluetooth chip, and the second oscillating circuit is the reference oscillation circuit of MCU.MCU and periphery electricity
Road combines and forms MCU circuit；MCU can use single-chip microcomputer, processor etc., and using model here is MKL172128VEM4；Bluetooth core
Sheet is combined formation Bluetooth circuit with peripheral circuit.Bluetooth chip model is: CC2564 series or RTL8188EUS；During work, MCU
Receiving the signal of induction apparatus detection, such as the detection signal of blood-glucose detector, MCU will be transferred to Bluetooth chip after signal processing, blue
The signal that tooth chip receives, after inner modulation, is filtered by RF high-pass filtering circuit, then by antenna to emission.This circuit
Can also be applied to receive in terminal, Bluetooth antenna receives signal, and transmits the signal to RF high-pass filtering circuit, through RF
After high-pass filtering circuit filtering, it is transferred to Bluetooth chip；Bluetooth chip is transferred to MCU by after signal processing.MCU and input equipment
And display device signal connects, the signal received by display device display, send order by input equipment to MCU and believe
Number.In order to allow circuit working stability, wherein, RF high-pass filtering circuit includes that the IN end foot of chip U3, chip U3 is by electric capacity C1
Being connected with the RF end foot signal of chip Bluetooth chip, the OUT terminal foot of chip U3 is connected with aerial signal by resistance R3, resistance R3
Two ends respectively by electric capacity C20, electric capacity C21 ground connection.The model of chip U3 is: RFBPF1608060ADT.
As shown in Figure 4, mu balanced circuit includes power input Vin, power output end Vout, voltage detection module 10, opens
Close control module 20, voltage generating module 30, differential electronic circuit 40 and output voltage adjusting module 50, wherein, voltage detecting mould
The input of block 10 is connected with power input Vin, and outfan is connected with the control end of switch control module 20；On-off control mould
The input of block 20 is connected with power input Vin, and outfan is electric with the input of voltage generating module 30 and differential son respectively
The first input end on road 40 connects；The outfan of voltage generating module 30 is connected with the second input of differential electronic circuit 40；Difference
First outfan of mover circuit 40 is connected with power output end Vout, and the second outfan is defeated with output voltage adjusting module 50
Enter end to connect；The outfan of output voltage adjusting module 50 is connected with power output end Vout.
When voltage detection module 10 detects the voltage of power input Vin more than the first preset voltage value, output controls
Signal exports corresponding electric signal to voltage generating module to switch control module 20, switch control module 20 according to control signal
30, voltage generating module 30 exports the second preset voltage value to differential electronic circuit 40, differential son electricity according to the signal of telecommunication received
Road 40 exports corresponding electric signal and adjusts according to the signal of telecommunication received to output voltage adjusting module 50, output voltage adjusting module 50
The output voltage of power output end Vout.
The magnitude of voltage of the big I of above-mentioned first preset voltage value this mu balanced circuit as required output is configured.Such as
The magnitude of voltage needing this mu balanced circuit to export is 3.3V, then the first preset voltage value can be set to 3V, and power input Vin is defeated
The voltage entered is set to 5V, i.e. the voltage of power input Vin is more than the first preset voltage value, then voltage detection module 10 exports
Controlling signal to switch control module 20, this control signal controls switch control module 20 and turns on；When power input Vin inputs
Voltage less than the first preset voltage value time, then voltage detection module 10 does not export control signal, therefore this switch control module
20 close.The big I of above-mentioned second preset voltage value is configured according to actual needs, in this no limit.
This mu balanced circuit also includes that the first filter capacitor 60, first filter capacitor 60 one end are connected with power input Vin,
Other end ground connection.In the present embodiment, the first filter capacitor 60 includes the first electric capacity C1 and the second electric capacity C2, wherein, the first electric capacity
C1 one end is connected with power input Vin, other end ground connection；Second electric capacity C2 one end is connected with power input Vin, the other end
Ground connection.Further, this mu balanced circuit also includes the second filter capacitor 70, the second filter capacitor 70 one end and power output end
Vout connects, other end ground connection.In the present embodiment, the second filter capacitor 70 includes the 3rd electric capacity C3 and the 4th electric capacity C4, wherein,
3rd electric capacity C3 one end is connected with power output end Vout, other end ground connection；4th electric capacity C4 one end and power output end Vout
Connect, other end ground connection.
Voltage detection module 10 include operational amplifier OP1, the first stabilivolt D1, the first resistance R1, the second resistance R2 and
3rd resistance R3, wherein, the in-phase input end of operational amplifier OP1 is connected with power input Vin, instead via the first resistance R1
Phase input is connected with power input Vin via the second resistance R2, and the negative electrode of inverting input and the first stabilivolt D1 is even
Connecing, the outfan of operational amplifier OP1 is connected with control end and the 3rd resistance R3 one end of switch control module 20 respectively；3rd
The other end of resistance R3 and the plus earth of the first stabilivolt D1.In the present embodiment, the outfan of operational amplifier OP1 is this
The outfan of voltage detection module 10, the voltage stabilizing value of the first stabilivolt D1 is above-mentioned first preset voltage value.First stabilivolt
D1 is by the voltage stabilization of the inverting input of operational amplifier OP1 a to constant value (i.e. the voltage stabilizing value of this first stabilivolt D1), electricity
The voltage of source input Vin adds to the in-phase input end of operational amplifier OP1 via the first resistance R1.As power input Vin
Voltage more than the voltage stabilizing value of the first stabilivolt D1 time, operational amplifier OP1 export high level, and now this mu balanced circuit enters surely
Pressure condition；When the voltage of power input Vin is less than the voltage stabilizing value of the first stabilivolt D1, operational amplifier OP1 exports low electricity
Flat, now this mu balanced circuit enters under-voltage protection state, it is possible to prevent above-mentioned power supply external for power input Vin by excessively
Electric discharge.
Specifically, switch control module 20 includes NMOS tube Q1, and the grid of NMOS tube Q1 is the control of switch control module 20
End processed, source electrode is the outfan of switch control module 20, and drain the input into switch control module 20.
In the present embodiment, when the grid of above-mentioned operational amplifier OP1 output high level to this NMOS tube Q1, this NMOS tube
Q1 turns on；When the grid of above-mentioned operational amplifier OP1 output low level to this NMOS tube Q1, this NMOS tube Q1 is ended.Voltage
Generation module 30 includes the outfan of the 4th resistance R4 and the second stabilivolt D2, the 4th resistance R4 one end and switch control module 20
Connecting, the negative electrode of the other end and the second stabilivolt D2 connects, the plus earth of the second stabilivolt D2, the negative electrode of the second stabilivolt D2
For the outfan of voltage generating module 30, therefore, the magnitude of voltage of this voltage generating module 30 output is equal to this second stabilivolt D2
Voltage stabilizing value.In the present embodiment, the voltage stabilizing value of the second stabilivolt D2 is above-mentioned second preset voltage value.Differential electronic circuit 40 wraps
Include the 5th resistance R5, PNP triode Q2, a NPN audion Q3 and the 2nd NPN audion Q4, wherein, the one of the 5th resistance R5
End ground connection, the other end is respectively connecting to a NPN audion Q3 and the emitter stage of the 2nd NPN audion Q4；Oneth NPN audion
The base stage of Q3 is connected with the outfan of voltage generating module 30, and colelctor electrode is connected with the base stage of PNP triode Q2；2nd NPN tri-
The base stage of pole pipe Q4 is connected with the input of output voltage adjusting module 50, and emitter stage is connected with power output end Vout；PNP tri-
The emitter stage of pole pipe Q2 is connected with the outfan of switch control module 20, and colelctor electrode is connected with power output end Vout.
The first input end of the transmitting of above-mentioned PNP triode Q2 extremely this differential electronic circuit 40, the current collection of PNP triode Q2
Extremely the first outfan of this differential electronic circuit 40；The base stage of an above-mentioned NPN audion Q3 is the of this differential electronic circuit 40
Two inputs, second outfan that base stage is this differential electronic circuit 40 of above-mentioned 2nd NPN audion Q4.
Output voltage adjusting module 50 includes that the 6th resistance R6 and the 7th resistance R7, the 6th resistance R6 one end export with power supply
End Vout connects, and the other end and the 7th resistance R7 one end connect, the 7th resistance R7 other end ground connection, the 6th resistance R6 and the 7th electricity
The input that common port is output voltage adjusting module 50 of resistance R7.Above-mentioned differential electronic circuit 40 can be to power output end Vout
The voltage of final output dynamically regulates, and prevents transistor from producing drift phenomenon because of variations in temperature, it is achieved output voltage
Stable.When the voltage causing power output end Vout to export due to outside cause increases suddenly, then the 2nd NPN audion Q4
Base potential raises, and the voltage difference between base stage and the emitter stage of the 2nd NPN audion Q4 increases, the 2nd NPN audion Q4's
Base current increases, then the 5th resistance R5 both end voltage raises, the voltage between base stage and the emitter stage of a NPN audion Q3
Subtractive is little, then the collector current of a NPN audion Q3 reduces, and therefore the base current of PNP triode Q2 reduces, so
Voltage difference between colelctor electrode and the emitter stage of PNP triode Q2 increases, and therefore the voltage of power output end Vout output reduces,
Thus achieve stablizing of output voltage by this differential electronic circuit 40.When causing power output end Vout defeated due to outside cause
When the voltage gone out reduces suddenly, then the 2nd NPN audion Q4 base potential reduce, the base stage of the 2nd NPN audion Q4 and send out
Voltage difference between emitter-base bandgap grading reduces, and the base current of the 2nd NPN audion Q4 reduces, then the 5th resistance R5 both end voltage reduces,
Voltage difference between base stage and the emitter stage of the oneth NPN audion Q3 increases, then the collector current of a NPN audion Q3 increases
Greatly, therefore the base current of PNP triode Q2 increases, so the voltage difference between the colelctor electrode of PNP triode Q2 and emitter stage
Reducing, therefore the voltage of power output end Vout output raises, thus achieves output voltage by this differential electronic circuit 40
Stable.If the external output voltage of power input Vin is the lithium battery of 5V, the voltage stabilizing value of the first stabilivolt D1 is 3V, second
The voltage stabilizing value of stabilivolt D2 is 2.2V, and the resistance of the 6th resistance R6 is 750 Ω, and the resistance of the 7th resistance R7 is 1500 Ω, and this is steady
The voltage of the power output end Vout output of volt circuit is 3.3V.The operation principle of this utility model mu balanced circuit specifically describes such as
Under: when the voltage that above-mentioned lithium battery exports is less than 3V, then the output voltage of operational amplifier OP1 is zero, the most above-mentioned NMOS
Pipe Q1 ends, and voltage generating module 30, differential electronic circuit 40 and output voltage adjusting module 50 do not work, thus prevent this
Lithium battery over-discharge, plays the effect of protection lithium battery.
When the voltage of output is more than 3V, then operational amplifier OP1 output voltage is high level, hence in so that NMOS tube Q1 is led
Logical, the second stabilivolt D2 is by stable for the base voltage of a NPN audion Q3 at 2.2V, and a NPN audion Q3 turns on, PNP
Audion Q2 is also switched on, and therefore the emitter voltage of a NPN audion Q3 is 1.5V, and the base stage of the 2nd NPN audion Q4
Voltage is also 2.2V, so the output voltage of the power output end Vout of this mu balanced circuit is calculated as follows: i.e. this mu balanced circuit
The output voltage of power output end Vout is 3.3V.
This utility model detects the voltage swing of power input Vin by voltage detection module 10, and when power supply inputs
Switch control module 20, switch control module 20 is output control signals to when the voltage of end Vin is more than the first preset voltage value
According to control signal output corresponding electric signal to voltage generating module 30, voltage generating module 30 is according to the signal of telecommunication output received
Second preset voltage value is to differential electronic circuit 40, and differential electronic circuit 40 exports corresponding electric signal to output voltage adjusting module 50,
Output voltage adjusting module 50 adjusts the output voltage of power output end Vout according to the signal of telecommunication received.This utility model provides
The stability of stabilized circuit outputting voltage higher and be prevented from external power supply and be excessively discharged.
As shown in Figure 6,7, by signal processing and signal gathering unit certain time interval, voltage and current is carried out
Data acquisition, selects suitable amplification to be amplified processing according to the size of actual current value, internal soft through processor
The calculating of part, during if it find that fault needs overload protection, dropout protected location sends dropout instruction, protects.This hardware
Part, in addition to overload protection, also has phase failure protection function.When microprocessor detects open phase fault, trip unit sends
Instruction, carries out open-phase protection.This electronic overload relay also has auto-reset function, and when normally working, energy-storage travelling wave tube starts
Energy storage, when, after faulty dropout, the module that automatically resets starts to start, after time delay a period of time, drive mechanism resetting coil, thread off
Initial condition will recover in mechanism.This hardware can arrange parameter by toggle switch and rotary coded switch, and by LED display control
The duty of detector unit processed.
After relay fault actions, both ends of power voltage is zero, and electric capacity C1 is in discharge condition, when electric capacity C1 anodic potentials
When turning on more than Zener diode D4, all element states are constant.Along with electric capacity C1 gradually discharges, when capacitance cathode current potential is less than
During stabilivolt conducting voltage, Zener diode D4 is in cut-off state.Audion Q1 base voltage VB is 0, and VBE ＜ 0, Q1 is in
Cut-off state.Electric capacity C2 is also at discharge condition, and audion Q3 emitter stage VE voltage is more than base voltage VB, and VBE ＞ 0, at Q3
In conducting state.The resistance of R6 ＜ R5 is selected during design, so audion Q3 emitter stage VE is more than base voltage VB, VBE ＜ 0,
Audion Q3 is in the conduction state.Resetting coil J two ends obtain electric, drive resetting-mechanism action.When relay work, electricity
Capacity charge stores energy；After relay fault actions, electric capacity electric discharge releases energy.Can adjust by adjusting potentiometer resistance size
Whole capacitor discharge time, thus adjust the relay automatically reset time.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (2)
1. the elevator having lock ladder device, it is characterised in that include car (3), be used for controlling the electrical control cubicles that car (3) lifts
(1) mobile device (2) of floor call sign, electrical control cubicles (1), mobile device (2) and car (3) and is sent to electrical control cubicles (1)
Inside be equipped with bluetooth communication, described electrical control cubicles (1) by bluetooth communication respectively with mobile device (2) and car (3)
Radio communication connects, and described bluetooth communication includes Bluetooth chip, RF high-pass filtering circuit and antenna, described Bluetooth chip
Connect and have the first oscillating circuit Bluetooth chip to be connected with antenna by RF high-pass filtering circuit；Also include for sensor signal
The MCU, MCU connected connects the second oscillating circuit, and MCU is connected with Bluetooth chip signal by wire；Electrical control cubicles (1) includes
One relay, and described relay connects a display control board.
The elevator of tool lock ladder device the most according to claim 1, it is characterised in that: apparatus for controlling elevator also includes motor
(5) and be used for controlling the converter (4) that motor (5) rotates, described motor (5) is connected with car (3) by cable；Electrical control cubicles
(1) include master controller (6) and master control bluetooth communication (7), described master control bluetooth communication (7), master controller (6),
Converter (4) and motor (5) connect the most in succession.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836394.9U CN205873545U (en) | 2016-08-04 | 2016-08-04 | Elevator of terraced device of utensil lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836394.9U CN205873545U (en) | 2016-08-04 | 2016-08-04 | Elevator of terraced device of utensil lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205873545U true CN205873545U (en) | 2017-01-11 |
Family
ID=57700879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620836394.9U Expired - Fee Related CN205873545U (en) | 2016-08-04 | 2016-08-04 | Elevator of terraced device of utensil lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205873545U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11447366B2 (en) | 2017-06-23 | 2022-09-20 | Otis Elevator Company | Determination for motion of passenger over elevator car |
| US11643299B2 (en) | 2017-06-22 | 2023-05-09 | Otis Elevator Company | Communication system and method for elevator system |
| US11708239B2 (en) | 2017-07-20 | 2023-07-25 | Otis Elevator Company | Seamless tracking of passenger flow within an elevator cabin |
-
2016
- 2016-08-04 CN CN201620836394.9U patent/CN205873545U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11643299B2 (en) | 2017-06-22 | 2023-05-09 | Otis Elevator Company | Communication system and method for elevator system |
| US11447366B2 (en) | 2017-06-23 | 2022-09-20 | Otis Elevator Company | Determination for motion of passenger over elevator car |
| US11708239B2 (en) | 2017-07-20 | 2023-07-25 | Otis Elevator Company | Seamless tracking of passenger flow within an elevator cabin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20170804 |