CN105480797A - Elevator car position and speed detection system and self-detection method thereof - Google Patents
Elevator car position and speed detection system and self-detection method thereof Download PDFInfo
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- CN105480797A CN105480797A CN201610044126.8A CN201610044126A CN105480797A CN 105480797 A CN105480797 A CN 105480797A CN 201610044126 A CN201610044126 A CN 201610044126A CN 105480797 A CN105480797 A CN 105480797A
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- diagnosis unit
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- detection system
- elevator car
- speed detection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3492—Position or motion detectors or driving means for the detector
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
Abstract
The invention relates to an elevator car position and speed detection system and a self-detection method thereof. A car is located in a shaft. The detection system comprises a grid scale vertically arranged in the shaft, a detection device for collecting grid scale information and a controller electrically connected with the detection device, wherein the grid scale at least contains a line of first-class identifications arranged vertically side by side and a line of second-class identifications matched with the first-class identifications to form binary coded information, and the binary coded information corresponding to the grid scale is non-repetitive; the detection device is fixed on the car and is provided with at least two first sensors which are arranged in the vertical direction and at least one second sensor for identifying the second-class identifications, and the first sensors are used for identifying the first-class identifications. Binary codes are generated after combination of detection signals of the second sensors and synchronizing signals of the first sensors, so that the absolute position of the detection device located in the grid scale is distinguished, the absolute position of the car located in the shaft is accurately obtained, the detection precision is high, and the detection cost is reduced.
Description
Technical field
The present invention relates to a kind of elevator technology field, particularly a kind of elevator car position and speed detection system and self checking method thereof.
Background technology
At present, the common detection methods of elevator car position is the girth calculating the actual rotation of traction sheave with the measurement signal of host computer side rotary encoder, thus convert out distance and car position and the speed of steel rope motion, but due to elevator employing is traction driving machinery system, that is be adopt frictional transmission connection mode between traction sheave and steel rope, slippage can be there is between traction sheave and steel rope, and because of the Gravity changer of mechanical system, the reasons such as the humidity extension change of steel rope, it is more inaccurate that these host computer side coder mode convert the car position drawn, general needs arrange multiple position transduser in addition and constantly correct car actual position in hoistway, therefore need to detect by plurality of devices, detection technique is complicated, and testing cost is high.
Summary of the invention
The object of the present invention is to provide a kind of elevator car position and speed detection system and self checking method thereof, the detection technique of elevator car position can be simplified, and accuracy of detection is high, reduce testing cost.
For realizing object of the present invention, the technical scheme taked is:
A kind of elevator car position and speed detection system, car is positioned at hoistway, this checking system comprises the grid chi be vertically arranged in hoistway, gather the detecting device of grid chi information, the controller be electrically connected with detecting device, grid chi is at least provided with the row first kind mark be vertically arranged in juxtaposition, and to identify with the first kind and coordinate the row Equations of The Second Kind forming binary coded message to identify, grid chi is to there being multiple binary coded message, each binary coded message does not all repeat, detecting device is fixed on car, and be provided with at least two first sensors vertically arranged and at least one second sensor identifying Equations of The Second Kind mark, the first sensor identification first kind identifies.
When elevator runs, car band motion detection device makes the perpendicular movement in hoistway along grid chi, first sensor gathers the information of first kind mark on grid chi, second sensor gathers the information of Equations of The Second Kind mark on grid chi, the information of collection is sent to controller by first sensor and the second sensor, controller is analyzed the information received, calculate and is stored, and the binary encoding that the grid chi analyzing detecting device process is corresponding.This checking system calculates relative position and the speed of car by first sensor, is calculated the moving direction of car, and produce synchronizing signal by least two first sensors.Binary encoding is produced after the synchronizing signal combination produced by the detection signal and first sensor that are positioned at upper second sensor of Equations of The Second Kind mark, and binary encoding corresponding to grid chi does not all repeat, thus tell the absolute location that detecting device is arranged in grid chi, thus accurately show that car is arranged in the absolute location of hoistway, without the need to repeatedly correcting, simplify the detection technique of elevator car position, and accuracy of detection is high, reduces testing cost.
Below technical scheme is further illustrated:
Be further, first kind mark at least comprises the first diagnosis unit and the second diagnosis unit, first diagnosis unit and the second diagnosis unit are vertically alternately arranged, Equations of The Second Kind mark at least comprise delimiter diagnosis unit, with identified group the 3rd diagnosis unit to be one to one made up of the first diagnosis unit and the second diagnosis unit.First kind id signal is as the synchronizing signal detecting Equations of The Second Kind id signal, first kind id signal is as a basic bit cycle of Equations of The Second Kind id signal, then the second sensor detects that the binary coded message that the 3rd diagnosis unit produce and the delimiter information that delimiter diagnosis unit produce directly are sent to controller, the binary encoding corresponding due to each grid chi does not repeat, controller then analyzes the absolute location that detecting device is arranged in grid chi, can obtain the absolute location that car is arranged in hoistway.
Further, the binary-coded character that the 3rd diagnosis unit are corresponding is 0 or 1.
Further, the first diagnosis unit in grid chi and the second diagnosis unit are alternately arranged continuously, and the length of the second diagnosis unit and the first diagnosis unit is fixed proportion relation.Be further, the distance of adjacent two described first sensors is D, the length of the first diagnosis unit is d, and the total length of the first diagnosis unit and the second diagnosis unit is c, then D=(e+N) × c/2, wherein, if d < is c/2, then 0 < e < 2d/c, if d >=c/2, then 0 < e≤2 (c-d)/c, N is natural number or 0.
Further, the second sensor and first sensor are B in vertical distance, have B=K × c, and K is natural number or 0.
Be further, first diagnosis unit are provided with magnet contactor or pattern, pattern is combined by least one perforate or color spot, second diagnosis unit are provided with the magnet contactor different from the first diagnosis unit or pattern, pattern is combined by least a slice white space or color spot, and the 3rd diagnosis unit are identical with the first diagnosis unit or the second diagnosis unit.First sensor is by identifying that magnet contactor or pattern read the information of the first diagnosis unit.
Be further, be set in the t time, the first kind mark number that first sensor detects is n, the then relative displacement s=c × n of car, speed v=the s/t of car, absolute location L=|M × (c × b)-m × (c × b) of car |, wherein c is the first diagnosis unit and the second diagnosis unit total length vertically, b is that binary encoding figure place corresponding to binary coded message adds 1, M is decimal coded corresponding to the binary coded message of the current reading of the second sensor, m is that the second sensor reads decimal coded corresponding to binary coded message that car reads when being positioned at hoistway extreme lower position.
The present invention also provides the self checking method of a kind of elevator car position and speed detection system, at least comprises four kinds of modes, and this self checking method carries out self-inspection by one of them kind mode; First kind of way: the quantity that first sensor detects the identified group be made up of the first diagnosis unit and the second diagnosis unit between two adjacent delimiter diagnosis unit is z1, the quantity of the 3rd diagnosis unit of the second sensor detection is z2 simultaneously, if z1 and z2 is different, or the z2 binary encoding figure place corresponding from the binary coded message of collection different time, controller gives the alarm signal; The second way: if first sensor is not when alternately detecting the first diagnosis unit and the second diagnosis unit, controller gives the alarm signal; The third mode: if when binary encoding corresponding to adjacent two binary coded messages is discontinuous, controller gives the alarm signal; 4th kind of mode: when the phase of output signal of all first sensors is identical, controller gives the alarm signal.When elevator is run, system is safer reliable and stable.
Compared with prior art, the present invention has following beneficial effect:
The present invention runs at elevator, car band motion detection device makes the perpendicular movement in hoistway along grid chi, first sensor gathers the information of first kind mark on grid chi, second sensor gathers the information of Equations of The Second Kind mark on grid chi, the information of collection is sent to controller by first sensor and the second sensor, controller is analyzed the information received, calculate and is stored, and the binary encoding that the grid chi analyzing detecting device process is corresponding.This checking system calculates relative position and the speed of car by first sensor, is calculated the moving direction of car, and produce synchronizing signal by least two first sensors.Binary encoding is produced after the synchronizing signal combination produced by the detection signal and first sensor that are positioned at upper second sensor of Equations of The Second Kind mark, and binary encoding corresponding to grid chi does not all repeat, thus tell the absolute location that detecting device is arranged in grid chi, thus accurately show that car is arranged in the absolute location of hoistway, without the need to repeatedly correcting, simplify the detection technique of elevator car position, and accuracy of detection is high, reduces testing cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention elevator car position and speed detection system;
Fig. 2 is the fundamental diagram of embodiment of the present invention elevator car position and speed detection system.
Description of reference numerals:
10. car, 20. hoistways, 30. grid chis, 310. first kind marks, 311. first diagnosis unit, 312. second diagnosis unit, 320. Equations of The Second Kind marks, 321. delimiter diagnosis unit, 322. the 3rd diagnosis unit, 40. detecting devices, 410. first sensors, 420. second sensors, 50. controllers.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail:
As depicted in figs. 1 and 2, a kind of elevator car position and speed detection system, car 10 is positioned at hoistway 20, this checking system comprises the grid chi 30 be vertically arranged in hoistway 20, gather the detecting device 40 of grid chi 30 information, the controller 50 be electrically connected with detecting device 40, grid chi 30 is at least provided with the row first kind mark 310 be vertically arranged in juxtaposition, and identify 310 with the first kind and coordinate the row Equations of The Second Kind forming binary coded message to identify 320, each grid chi 30 is to there being multiple binary coded message, each binary coded message is all different, detecting device 40 is fixed on car 10, and be provided with at least two first sensors 410 vertically arranged and at least one second sensor 420 identifying Equations of The Second Kind mark 320, first sensor 410 identifies first kind mark 310.
When elevator runs, car 10 to make the perpendicular movement in hoistway 20 along grid chi 30 with motion detection device 40, first sensor 410 gathers the information of first kind mark 310 on grid chi 30, second sensor 420 gathers the information of Equations of The Second Kind mark 320 on grid chi 30, the information of collection is sent to controller 50 by first sensor 410 and the second sensor 420, controller 50 is analyzed the information received, calculate and is stored, and analyzes the binary encoding of grid chi 30 correspondence of detecting device 40 process.This checking system calculates relative position and the speed of car 10 by first sensor 410, is calculated the moving direction of car 10, and produce synchronizing signal by least two first sensors 410.Binary encoding is produced after the synchronizing signal combination produced by the detection signal and first sensor 410 that are positioned at the second sensor 420 in Equations of The Second Kind mark 320, and the binary encoding of grid chi 30 correspondence does not all repeat, thus tell the absolute location that detecting device 40 is arranged in grid chi 30, thus accurately show that car 10 is arranged in the absolute location of hoistway 20, without the need to repeatedly correcting, simplify the detection technique of lift car 10 position, and accuracy of detection is high, reduces testing cost.
When being measured position and the speed of car 10 by this checking system, be set in the t time, it is n that the first kind that first sensor 410 detects identifies 310 numbers, the then relative displacement s=c × n of car 10, speed v=the s/t of car 10, absolute location L=|M × (c × b)-m × (c × b) of car 10 |, wherein c is the first diagnosis unit 311 and the second diagnosis unit 312 total length vertically, b is that binary encoding figure place corresponding to binary coded message adds 1, M is decimal coded corresponding to the binary coded message of the current reading of the second sensor 420, m is that the second sensor 420 reads decimal coded corresponding to the binary coded message that reads when car 10 is positioned at hoistway 20 extreme lower position.
In the present embodiment, first kind mark 310 comprises the first diagnosis unit 311 and the second diagnosis unit 312, first diagnosis unit 311 and the second diagnosis unit 312 are vertically alternately arranged, Equations of The Second Kind mark 320 comprise delimiter diagnosis unit 321, with identified group the 3rd diagnosis unit 322 to be one to one made up of the first diagnosis unit 311 and the second diagnosis unit 312, the first diagnosis unit 311 second diagnosis unit 312 in grid chi 30 are alternately arranged continuously.The first kind identifies 310 signals identify 320 signals synchronizing signal as detection Equations of The Second Kind, the first kind identifies 310 signals identify a 320 signals basic bit cycle as Equations of The Second Kind, then the second sensor 420 detects that the binary coded message that the 3rd diagnosis unit 322 produce and the delimiter information that delimiter diagnosis unit 321 produce directly are sent to controller 50, because the binary encoding of grid chi 30 correspondence does not repeat, controller 50 analyzes the absolute location that detecting device 40 is arranged in grid chi 30, can obtain the absolute location that car 10 is arranged in hoistway 20.First kind mark 310 can also arrange two or more diagnosis unit according to actual needs.
As shown in Figure 2, a grid chi 30 is provided with 15 first kind marks 310, first diagnosis unit 311 are provided with corresponding electric signal ON, the corresponding electric signal OFF of second diagnosis unit 312, first diagnosis unit 311 are identical with the length of the second diagnosis unit 312, the first kind identify 310 correspondences for equal proportion signal, detection is analyzed faster, simplify detection technique further; Equations of The Second Kind mark 320 is special binary coded signals, the ON/OFF signal synchronous with equal proportion signal is adopted to form binary encoding, this binary encoding is set as the full-length of fixing, fixing putting in order, and the binary encoding of grid chi 30 correspondence does not repeat.
As shown in Figure 2, Equations of The Second Kind mark 320 is provided with 14 and the 3rd diagnosis unit 322 and 1 delimiter diagnosis unit 321, the binary-coded character of the 3rd diagnosis unit 322 correspondence is 0 or 1, and the delimiter of delimiter diagnosis unit 321 correspondence is subluxation symbol, then the binary-coded character of grid chi 30 correspondence of the present embodiment is combined by 1 and 0.
In the present embodiment, the beacon information of the first diagnosis unit 311 is color spot reflection detection mode, second diagnosis unit 312 are the blank surface between adjacent two the first diagnosis unit 311, namely without any pattern-information or other beacon information, first sensor 410 is sent to controller 50 by the beacon information of identification first diagnosis unit 311, and be marked as electric signal ON, the unidentified beacon information to the first diagnosis unit 311 of first sensor 410, when namely detecting the blank surface of the second diagnosis unit 312, Detection Information is sent to controller 50, and be marked as electric signal OFF.The beacon information of the first diagnosis unit 311 can also be set to other pattern detection modes such as magnet contactor mode or perforate printing opacity according to actual needs.
As depicted in figs. 1 and 2, detecting device 40 be provided with two first sensors 410, with first sensor 410 second sensor 420 one to one, first sensor 410 is arranged side by side with the second corresponding sensor 420.Adopt two the second sensors 420 to detect Equations of The Second Kind mark 320 simultaneously, mutually proofread, improve reliability and signal redundancy.Detecting device 40 can also according to actual needs at setting at least two first sensors 410 and at least one second sensor 420.
In the present embodiment, first sensor 410 and the second sensor 420 are opto-electronic pickup, and first sensor 410 and the second sensor 420 can also be set to other forms of sensor according to actual needs, and with grid chi 30 information matches.
And the distance of adjacent two first sensors 410 is D, the length of the first diagnosis unit 311 is d, the total length of the first diagnosis unit 311 and the second diagnosis unit 312 is c, then D=(e+N) × c/2, wherein, if d < is c/2, then 0 < e < 2d/c, if d >=c/2, then 0 < e≤2 (c-d)/c, and the second sensor and first sensor are B in vertical distance, have B=K × c, N and K is natural number or 0.
In the present embodiment, d=0.5mm, a=0.25, N=10, then D=5.25mm.Because in first kind mark 310, two the second sensors 420 are at a distance of 5.25m, the length of the first diagnosis unit 311 is 0.5mm, and the first sensor 410 being positioned at top when car 10 moves up is ahead of below first sensor 41090 °, i.e. 0.25mm; Otherwise the first sensor 410 being positioned at below when car 10 moves down is ahead of the first sensor 41090 ° of top, i.e. 0.25mm, therefore carry out intersection by the positive rise of electric signal to judge, the real motion direction of car 10 can be told, and two first sensors 410 adopt the mode of two-way mutual deviation 90 ° to combine, therefore examining precision is mutually 0.25mm, the first kind is identified 310 signals and Equations of The Second Kind to identify 320 signals to carry out the accuracy of detection of the present embodiment after complete combination be 0.25mm, improve accuracy of detection further.A, d, n can also be set to other values according to actual needs.
The present invention also provides the self checking method of a kind of elevator car position and speed detection system, at least comprises four kinds of modes, and this self checking method carries out self-inspection by one of them kind mode; First kind of way: the quantity that first sensor 410 detects the identified group be made up of the first diagnosis unit 311 and the second diagnosis unit 312 between two adjacent delimiter diagnosis unit 321 is z1, the quantity of the 3rd diagnosis unit 322 of the second sensor 420 detection is z2 simultaneously, if z1 and z2 is different, or the z2 binary encoding figure place corresponding from the binary coded message of collection different time, controller 50 gives the alarm signal; The second way: if first sensor 410 is not when alternately detecting the first diagnosis unit 311 and the second diagnosis unit 312, controller 50 gives the alarm signal; The third mode: if when binary encoding corresponding to adjacent two binary coded messages is discontinuous, controller 50 gives the alarm signal; 4th kind of mode: when the phase of output signal of all first sensors 410 is identical, controller 50 gives the alarm signal.When elevator is run, system is safer reliable and stable.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification sheets is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. an elevator car position and speed detection system, car is positioned at hoistway, it is characterized in that, comprise the grid chi be vertically arranged in described hoistway, gather the detecting device of described grid chi information, the controller be electrically connected with described detecting device, described grid chi is at least provided with the row first kind mark be vertically arranged in juxtaposition, and to identify with the described first kind and coordinate the row Equations of The Second Kind forming binary coded message to identify, described grid chi is to there being multiple described binary coded message, each described binary coded message does not all repeat, described detecting device is fixed on described car, and be provided with at least two first sensors vertically arranging and identify at least one second sensor that described Equations of The Second Kind identifies, first kind mark described in described first sensor identification.
2. elevator car position according to claim 1 and speed detection system, it is characterized in that, described first kind mark at least comprises the first diagnosis unit and the second diagnosis unit, described first diagnosis unit and described second diagnosis unit are vertically alternately arranged, described Equations of The Second Kind mark at least comprise delimiter diagnosis unit, with identified group the 3rd diagnosis unit be one to one made up of described first diagnosis unit and described second diagnosis unit.
3. elevator car position according to claim 2 and speed detection system, is characterized in that, the binary-coded character that described 3rd diagnosis unit are corresponding is 0 or 1.
4. elevator car position according to claim 1 and speed detection system, it is characterized in that, described first diagnosis unit in described grid chi and described second diagnosis unit are alternately arranged continuously, and the length of described second diagnosis unit and described first diagnosis unit is fixed proportion.
5. elevator car position according to claim 4 and speed detection system, it is characterized in that, the distance of described adjacent two described first sensors is D, the length of described first diagnosis unit is d, the total length of described first diagnosis unit and described second diagnosis unit is c, then D=(e+N) × c/2, wherein, if d < is c/2, then 0 < e < 2d/c, if d >=c/2, then 0 < e≤2 (c-d)/c, N is natural number or 0.
6. elevator car position according to claim 5 and speed detection system, is characterized in that, described second sensor and described first sensor are B in vertical distance, have B=K × c, and K is natural number or 0.
7. elevator car position according to claim 2 and speed detection system, it is characterized in that, described first diagnosis unit are provided with magnet contactor or pattern, described pattern is combined by least one perforate or color spot, described second diagnosis unit are provided with the magnet contactor different from described first diagnosis unit or pattern, described pattern is combined by least a slice white space or color spot, and described 3rd diagnosis unit are identical with described first diagnosis unit or described second diagnosis unit.
8. the elevator car position according to any one of claim 1 to 7 and speed detection system, it is characterized in that, be set in the t time, the described first kind mark number that described first sensor detects is n, the then relative displacement s=c × n of described car, speed v=the s/t of described car, absolute location L=|M × (c × b)-m × (c × b) of described car |, wherein c is described first diagnosis unit and the second diagnosis unit total length vertically, b is that binary encoding figure place corresponding to described binary coded message adds 1, M is decimal coded corresponding to the described binary coded message of the current reading of described second sensor, m is that described second sensor reads decimal coded corresponding to the described binary coded message that reads when described car is positioned at described hoistway extreme lower position.
9. the elevator car position as described in any one of claim 2 to 8 and a self checking method for speed detection system, is characterized in that, at least comprises four kinds of modes, and this self checking method carries out self-inspection by one of them kind mode; First kind of way: the quantity that first sensor detects the identified group be made up of the first diagnosis unit and the second diagnosis unit between two adjacent delimiter diagnosis unit is z1, the quantity of the 3rd diagnosis unit of the second sensor detection is z2 simultaneously, if z1 and z2 is different, or the z2 binary encoding figure place corresponding from the binary coded message of collection different time, controller gives the alarm signal; The second way: if first sensor is not when alternately detecting the first diagnosis unit and the second diagnosis unit, controller gives the alarm signal; The third mode: if when binary encoding corresponding to adjacent two binary coded messages is discontinuous, controller gives the alarm signal; 4th kind of mode: when the phase of output signal of all first sensors is identical, controller gives the alarm signal.
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| CN106829671A (en) * | 2017-03-02 | 2017-06-13 | 山东科技大学 | A kind of elevator safety detection means and detection method |
| CN107055245A (en) * | 2017-05-18 | 2017-08-18 | 广西烽火信息技术有限公司 | A kind of elevator method of real-time and device |
| CN108423507A (en) * | 2018-03-09 | 2018-08-21 | 日立电梯（中国）有限公司 | The self-checking unit and its self checking method of the detecting system of car absolute position |
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