CN205328390U - Elevator car position and speed detecting system - Google Patents
Elevator car position and speed detecting system Download PDFInfo
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- CN205328390U CN205328390U CN201620064417.9U CN201620064417U CN205328390U CN 205328390 U CN205328390 U CN 205328390U CN 201620064417 U CN201620064417 U CN 201620064417U CN 205328390 U CN205328390 U CN 205328390U
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Abstract
The utility model relates to an elevator car position and speed detecting system, the car is located the well, this detecting system includes the bars chi in the well along vertical layout, gather the detection device of bars chi information, controller with detection device electric connection, the bars chi be equipped with at least along vertical arrange side by side one be listed as first kind sign, it is listed as second class sign to form one of binary encoding information with the cooperation of first kind sign, the binary encoding information that the bars chi corresponds does not all repeat, detection device is fixed in on the car, and be equipped with along two at least first sensors of vertical layout and at least one second sensor of discernment second class sign, first sensor discernment first kind sign. Produce binary encoding after detected signal through the second sensor and the combination of the synchronization signal of first sensor to tell the absolute position that detection device is located the bars upper part of cunkou pulse, thus the accurate absolute position that the car is arranged in the well, detection precision height, the reduction detection cost of reaching.
Description
Technical field
This utility model relates to a kind of elevator technology field, particularly to a kind of elevator car position and speed detection system。
Background technology
At present, the common detection methods of elevator car position is to calculate the girth of the actual rotation of traction sheave with the signal of measuring of host computer side rotary encoder, thus converting out distance and car position and the speed of steel wire rope motion, but due to elevator employing is traction driving machinery system, that is it is adopt frictional drive connected mode between traction sheave and steel wire rope, sliding can be there is between traction sheave and steel wire rope, and the Gravity changer because of mechanical system, the reasons such as the humidity extension change of steel wire rope, the car position that the conversion of these host computer side coder mode draws is more inaccurate, it is generally required to additionally arrange multiple position sensor in hoistway constantly correct car actual position, it is thus desirable to detect by plurality of devices, detection technique is complicated, and testing cost is high。
Utility model content
The purpose of this utility model is in that to provide a kind of elevator car position and speed detection system, it is possible to simplify the detection technique of elevator car position, and accuracy of detection is high, reduces testing cost。
For realizing the purpose of this utility model, adopt the technical scheme that:
A kind of elevator car position and speed detection system, car is positioned at hoistway, this detection system includes vertically arranged grid chi in hoistway, gather the detecting device of grid chi information, controller with detecting device electric connection, grid chi is at least provided with the string first kind mark being vertically arranged in juxtaposition, and cooperatively form the string Equations of The Second Kind mark of binary-coded information with first kind mark, grid chi is to there being multiple binary-coded information, each binary-coded information does not all repeat, detecting device is fixed on car, and be provided with vertically arranged at least two first sensor and identify at least one second sensor of Equations of The Second Kind mark, the first sensor identification first kind identifies。
When elevator runs, car makees moving both vertically in hoistway with motion detection device along grid chi, first sensor gathers the information of first kind mark on grid chi, the information of Equations of The Second Kind mark on second sensor acquisition grid chi, the information gathered is sent to controller by first sensor and the second sensor, the information received is analyzed, calculates and stores by controller, and the binary coding that the grid chi that analyzes detecting device process is corresponding。This detection system calculates relative position and the speed of car by first sensor, is calculated the moving direction of car by least two first sensor, and produces synchronizing signal。Binary coding is produced identify the synchronizing signal combination detecting signal and first sensor generation of upper second sensor by being positioned at Equations of The Second Kind after, and binary coding corresponding to grid chi does not all repeat, thus telling detecting device to be arranged in the absolute position of grid chi, thus accurately showing that car is arranged in the absolute position of hoistway, without 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:
It is further, first kind mark at least includes the first recognition unit and the second recognition unit, first recognition unit and the second recognition unit are vertically alternately arranged, and Equations of The Second Kind mark at least includes delimiter recognition unit and mark group the 3rd recognition unit one to one being made up of the first recognition unit and the second recognition unit。First kind id signal is as the synchronizing signal of detection 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 information of the 3rd recognition unit generation and the delimiter information of delimiter recognition unit generation are sent directly to controller, the binary coding corresponding due to each grid chi does not repeat, controller then analyzes detecting device and is arranged in the absolute position of grid chi, can obtain car and be arranged in the absolute position of hoistway。
Further, the binary-coded character that the 3rd recognition unit is corresponding is 0 or 1。
Further, the first recognition unit and the second recognition unit in grid chi are alternately arranged continuously, and the length of the second recognition unit and the first recognition unit is fixed proportion relation。It is further, the distance of adjacent two described first sensors is D, the length of the first recognition unit is d, and the total length of the first recognition unit and the second recognition unit is c, then D=(e+N) × c/2, wherein, if d < 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, and having B=K × c, K is natural number or 0。
It is further, first recognition unit is provided with magnetic switch or pattern, pattern is combined by least one perforate or mottle, second recognition unit is provided with the magnetic switch different from the first recognition unit or pattern, pattern is combined by least a piece of white space or mottle, and the 3rd recognition unit and the first recognition unit or the second recognition unit are identical。First sensor is by identifying that magnetic switch or pattern read the information of the first recognition unit。
It is further, it is 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, the absolute position L=of car | M × (c × b)-m × (c × b) |, wherein c is the first recognition unit and the second recognition unit total length vertically, b is that binary coding figure place corresponding to binary-coded information adds 1, M is the decimal coded that binary-coded information that the second sensor currently reads is corresponding, m is the decimal coded that the second sensor reads that the binary-coded information read when car is positioned at hoistway extreme lower position is corresponding。
Compared with prior art, this utility model has the advantages that
This utility model runs at elevator, car makees moving both vertically in hoistway with motion detection device along grid chi, first sensor gathers the information of first kind mark on grid chi, the information of Equations of The Second Kind mark on second sensor acquisition grid chi, the information gathered is sent to controller by first sensor and the second sensor, the information received is analyzed, calculates and stores by controller, and the binary coding that the grid chi that analyzes detecting device process is corresponding。This detection system calculates relative position and the speed of car by first sensor, is calculated the moving direction of car by least two first sensor, and produces synchronizing signal。Binary coding is produced identify the synchronizing signal combination detecting signal and first sensor generation of upper second sensor by being positioned at Equations of The Second Kind after, and binary coding corresponding to grid chi does not all repeat, thus telling detecting device to be arranged in the absolute position of grid chi, thus accurately showing that car is arranged in the absolute position of hoistway, without 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 this utility model embodiment elevator car position and speed detection system；
Fig. 2 is the fundamental diagram of this utility model embodiment elevator car position and speed detection system。
Description of reference numerals:
10. car, 20. hoistways, 30. grid chis, 310. first kind marks, 311. first recognition units, 312. the second recognition unit, 320. Equations of The Second Kind marks, 321. delimiter recognition units, 322. the 3rd recognition units, 40. detecting device, 410. first sensors, 420. second sensors, 50. controllers。
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is 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 detection system includes vertically arranged grid chi 30 in hoistway 20, gather the detecting device 40 of grid chi 30 information, controller 50 with detecting device 40 electric connection, grid chi 30 is at least provided with the string first kind mark 310 being vertically arranged in juxtaposition, and identify the 310 string Equations of The Second Kind marks 320 cooperatively forming binary-coded information with the first kind, each grid chi 30 is to there being multiple binary-coded information, each binary-coded information is all different, detecting device 40 is fixed on car 10, and be provided with vertically arranged at least two first sensor 410 and identify at least one second sensor 420 of Equations of The Second Kind mark 320, first sensor 410 identifies first kind mark 310。
When elevator runs, car 10 makees moving both vertically in hoistway 20 with motion detection device 40 along grid chi 30, 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 gathered is sent to controller 50 by first sensor 410 and the second sensor 420, the information received is analyzed, calculates and stores by controller 50, and analyzes the binary coding of grid chi 30 correspondence of detecting device 40 process。This detection system calculates relative position and the speed of car 10 by first sensor 410, is calculated the moving direction of car 10 by least two first sensor 410, and produces synchronizing signal。Binary coding is produced by after the synchronizing signal combination that the detection signal and first sensor 410 that are positioned at the second sensor 420 in Equations of The Second Kind mark 320 produce, and the binary coding of grid chi 30 correspondence does not all repeat, thus telling detecting device 40 to be arranged in the absolute position of grid chi 30, thus accurately showing that car 10 is arranged in the absolute position of hoistway 20, without repeatedly correcting, simplify the detection technique of lift car 10 position, and accuracy of detection is high, reduces testing cost。
During by the position of this detection systematic survey car 10 and speed, it is 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, the absolute position L=of car 10 | M × (c × b)-m × (c × b) |, wherein c is the first recognition unit 311 and the second recognition unit 312 total length vertically, b is that binary coding figure place corresponding to binary-coded information adds 1, M is the decimal coded that binary-coded information that the second sensor 420 currently reads is corresponding, m is the decimal coded that the second sensor 420 reads that the binary-coded information read when car 10 is positioned at hoistway 20 extreme lower position is corresponding。
In the present embodiment, first kind mark 310 includes the first recognition unit 311 and the second recognition unit 312, first recognition unit 311 and the second recognition unit 312 are vertically alternately arranged, Equations of The Second Kind mark 320 includes delimiter recognition unit 321 and mark group the 3rd recognition unit 322 one to one being made up of the first recognition unit 311 and the second recognition unit 312, and the first recognition unit 311 second recognition unit 312 in grid chi 30 is alternately arranged continuously。The first kind identifies 310 signals and identifies the synchronizing signal of 320 signals as detection Equations of The Second Kind, the first kind identifies 310 signals and identifies a basic bit cycle of 320 signals as Equations of The Second Kind, then the second sensor 420 detects that the binary-coded information of the 3rd recognition unit 322 generation and the delimiter information of delimiter recognition unit 321 generation are sent directly to controller 50, owing to the binary coding of grid chi 30 correspondence does not repeat, controller 50 then analyzes detecting device 40 and is arranged in the absolute position of grid chi 30, can obtain car 10 and be arranged in the absolute position of hoistway 20。First kind mark 310 can also arrange two or more recognition unit according to actual needs。
As shown in Figure 2, one grid chi 30 is provided with 15 first kind marks 310, first recognition unit 311 is provided with corresponding signal of telecommunication ON, the corresponding signal of telecommunication OFF of second recognition unit 312, first recognition unit 311 is identical with the length of the second recognition unit 312, what the first kind identified 310 correspondences is equal proportion signal, makes detection analyze faster, simplifies detection technique further；Equations of The Second Kind mark 320 is special binary coded signal, adopt the ON/OFF signal composition binary coding Tong Bu with equal proportion signal, this binary coding is set as the full-length fixed, fixing putting in order, and the binary coding 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 recognition unit 322 and 1 delimiter recognition unit 321, the binary-coded character of the 3rd recognition unit 322 correspondence is 0 or 1, and the delimiter of delimiter recognition 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 recognition unit 311 is mottle reflection detection mode, second recognition unit 312 is the blank surface between adjacent two the first recognition units 311, namely there is no any pattern-information or other beacon information, first sensor 410 is by identifying that the beacon information of the first recognition unit 311 sends to controller 50, and it is marked as signal of telecommunication ON, the unidentified beacon information to the first recognition unit 311 of first sensor 410, when namely detecting the blank surface of the second recognition unit 312, detection information is sent to controller 50, and it is marked as signal of telecommunication OFF。The beacon information of the first recognition unit 311 can also be set to other pattern detection modes such as magnetic switch mode or perforate printing opacity according to actual needs。
As depicted in figs. 1 and 2, detecting device 40 is provided with two first sensors 410 and first sensor 410 second sensor 420 one to one, and 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 arrange at least two first sensor 410 and at least one second sensor 420 according to actual needs。
In the present embodiment, first sensor 410 and the second sensor 420 are photoelectric sensor, and first sensor 410 and the second sensor 420 can also be set to the sensor of other forms 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 recognition unit 311 is d, the total length of the first recognition unit 311 and the second recognition 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 second sensor and first sensor be B in vertical distance, have B=K × c, N and K to be natural number or 0。
In the present embodiment, d=0.5mm, a=0.25, N=10, then D=5.25mm。Owing to the first kind identifies on 310, two the second sensors 420 are at a distance of 5.25m, and the length of the first recognition unit 311 is 0.5mm, and the first sensor 410 above when car 10 moves up is ahead of lower section first sensor 41090 °, i.e. 0.25mm；Otherwise the first sensor 410 being positioned below when car 10 moves down is ahead of the first sensor 41090 ° of top, i.e. 0.25mm, therefore undertaken intersecting by the rising edge of the signal of telecommunication and 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 inspection precision is 0.25mm mutually, the first kind is identified 310 signals and Equations of The Second Kind to identify the accuracy of detection of the present embodiment after 320 signals carry out 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 self checking method of this utility model elevator car position and speed detection system, at least includes four kinds of modes, and this self checking method carries out self-inspection by a kind of at least within mode；First kind of way: it is z1 that first sensor 410 detects the quantity of the mark group being made up of between adjacent two delimiter recognition unit 321 the first recognition unit 311 and the second recognition unit 312, the quantity of the 3rd recognition unit 322 of the second sensor 420 detection is z2 simultaneously, if z1 and z2 is different, or the z2 binary coding figure place corresponding from the binary-coded information of collection different time, controller 50 signal an alert；The second way: if first sensor 410 is not carry out the first recognition unit 311 and the second recognition unit 312 alternately detecting, controller 50 signal an alert；The third mode: if binary coding corresponding to adjacent two binary-coded informations is discontinuous, controller 50 signal an alert；4th kind of mode: when the phase of output signal of all first sensors 410 is identical, controller 50 signal an alert。When making elevator run, system is safer reliable and stable。
Each technical characteristic of embodiment described above 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 is absent from contradiction, all it is considered to be the scope that this specification is recorded。
Embodiment described above only have expressed several embodiments of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope。It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model。Therefore, the protection domain of this utility model patent should be as the criterion with claims。
Claims (8)
1. an elevator car position and speed detection system, car is positioned at hoistway, it is characterized in that, including vertically arranged grid chi in described hoistway, gather the detecting device of described grid chi information, the controller being electrically connected with described detecting device, described grid chi is at least provided with the string first kind mark being vertically arranged in juxtaposition, and cooperatively form the string Equations of The Second Kind mark of binary-coded information with described first kind mark, described grid chi is to there being multiple described binary-coded information, each described binary-coded information does not all repeat, described detecting device is fixed on described car, and be provided with vertically arranged at least two first sensor 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 includes the first recognition unit and the second recognition unit, described first recognition unit and described second recognition unit are vertically alternately arranged, and described Equations of The Second Kind mark at least includes delimiter recognition unit and mark group the 3rd recognition unit one to one being made up of described first recognition unit and described second recognition unit。
3. elevator car position according to claim 2 and speed detection system, it is characterised in that the binary-coded character that described 3rd recognition unit is corresponding is 0 or 1。
4. elevator car position according to claim 1 and speed detection system, it is characterized in that, described first recognition unit and described second recognition unit in described grid chi are alternately arranged continuously, and the length of described second recognition unit and described first recognition 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 recognition unit is d, the total length of described first recognition unit and described second recognition 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, it is characterised in that described second sensor and described first sensor are B in vertical distance, and having B=K × c, 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 recognition unit is provided with magnetic switch or pattern, described pattern is combined by least one perforate or mottle, described second recognition unit is provided with the magnetic switch different from described first recognition unit or pattern, described pattern is combined by least a piece of white space or mottle, and described 3rd recognition unit is identical with described first recognition unit or described second recognition unit。
8. elevator car position according to any one of claim 1 to 7 and speed detection system, it is characterized in that, it is 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, the absolute position L=of described car | M × (c × b)-m × (c × b) |, wherein c is described first recognition unit and the second recognition unit total length vertically, b is that binary coding figure place corresponding to described binary-coded information adds 1, M is the decimal coded that described binary-coded information that described second sensor currently reads is corresponding, m is the decimal coded that described second sensor reads that the described binary-coded information read when described car is positioned at described hoistway extreme lower position is corresponding。
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480797A (en) * | 2016-01-22 | 2016-04-13 | 日立电梯（中国）有限公司 | Elevator car position and speed detection system and self-detection method thereof |
| CN106927327A (en) * | 2017-03-27 | 2017-07-07 | 无锡英威腾电梯控制技术有限公司 | A kind of elevator safety detection method and device |
| CN109399410A (en) * | 2018-12-12 | 2019-03-01 | 上海新时达电气股份有限公司 | Double-car elevator positioning control system, method and computer readable storage medium |
| CN109789987A (en) * | 2016-09-30 | 2019-05-21 | 因温特奥股份公司 | The vibration stabilizer of information carrier |
| WO2019169623A1 (en) * | 2018-03-09 | 2019-09-12 | 日立电梯（中国）有限公司 | Sensing system for determining absolute position of elevator car and self-testing method thereof |
| GB2615371A (en) * | 2022-02-08 | 2023-08-09 | Lester Control Systems Ltd | Lift control |
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2016
- 2016-01-22 CN CN201620064417.9U patent/CN205328390U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480797A (en) * | 2016-01-22 | 2016-04-13 | 日立电梯（中国）有限公司 | Elevator car position and speed detection system and self-detection method thereof |
| CN105480797B (en) * | 2016-01-22 | 2017-05-03 | 日立电梯（中国）有限公司 | Elevator car position and speed detection system and self-detection method thereof |
| CN109789987A (en) * | 2016-09-30 | 2019-05-21 | 因温特奥股份公司 | The vibration stabilizer of information carrier |
| CN106927327A (en) * | 2017-03-27 | 2017-07-07 | 无锡英威腾电梯控制技术有限公司 | A kind of elevator safety detection method and device |
| CN106927327B (en) * | 2017-03-27 | 2020-06-16 | 无锡英威腾电梯控制技术有限公司 | Elevator safety detection method and device |
| WO2019169623A1 (en) * | 2018-03-09 | 2019-09-12 | 日立电梯（中国）有限公司 | Sensing system for determining absolute position of elevator car and self-testing method thereof |
| CN109399410A (en) * | 2018-12-12 | 2019-03-01 | 上海新时达电气股份有限公司 | Double-car elevator positioning control system, method and computer readable storage medium |
| GB2615371A (en) * | 2022-02-08 | 2023-08-09 | Lester Control Systems Ltd | Lift control |
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