CN100519390C

CN100519390C - Hoister using radio frequency identifying device (RFID) and hoister calling system

Info

Publication number: CN100519390C
Application number: CNB028294025A
Authority: CN
Inventors: A·韦基奥蒂; A·巴塞拉; L·巴塞拉; D·哈斯; C·内特尔; P·斯图基; W·A·韦洛内斯; J·扎基奥; B·泽普克
Original assignee: Otis Elevator Co
Current assignee: Otis Elevator Co
Priority date: 2002-08-01
Filing date: 2002-08-01
Publication date: 2009-07-29
Anticipated expiration: 2022-08-01
Also published as: AU2002326490A1; WO2004013030A1; ES2359630T3; BR0215827B1; EP1539630B1; EP1539630A1; BR0215827A; EP1539630A4; DE60239427D1; JP4205057B2; HK1077798A1; JP2005534591A; CN1642840A

Abstract

An elevator safety chain includes a plurality of passive radio frequency identification devices (RFIDs), which are a sociated, respectively, with hoistway door locks, upper hoistway limits, lower hoistway limits, overspeed detection, car door lock, emergency stop switch, and inspection switch. RFIDs may be associated with car call buttons and/or hall call buttons. The RFIDs may have a switch in the frequency-determining circuitry which defeats the RFID's ability to respond, or a switch which alters the responding frequency. The RFIDs may sense safe or unsafe conditions, or call requests, by either the presence of absence, or vice versa, of adjacent magnetic reluctance.

Description

Adopt gig and a kind of gig calling system of radio frequency identification devices (RFID)

Technical field

The present invention relates to a kind of safety return circuit of gig, wherein by carrying out communication for monitored security-related gig parameter state or situation from the wireless transmission of inquiry, passive RFID.

Background technology

As known, almost the safety return circuit of each gig comprises a series of switches, and all switches must be connected, and make whole safety return circuit (galvanic circle) connect, otherwise gig can not be operated.In the past, the safety return circuit of gig comprises the switch of a plurality of dispersions, and each switch has moveable contact, when parameter in safety condition following time, this contact connects between a pair of loop, and when parameter not in safety condition following time, throw off at least one loop of this contact and safety return circuit.The example of switch is master cock, upper and lower passage limit switch and the overspeed switch of hoistway door lock switches, gig door switch, emergency stop switch, car top in safety return circuit.Different switches interconnect by line, for the size and the position of line and conduit, must observe local government's regulation.In addition, since embedded wired, in case the building line so that safety return circuit to be provided, will be difficult to change the structure or the flat-bed building structure of building.Gig and hoistway door lock switches must be installed on one's body the Men Ben, therefore according to circumstances, are connected on car and the building by flexible connecting line.

For described and other defective that overcomes hard wire, disperses the switch safety return circuit, in US patent application serial number 09/899400, disclose a kind of wireless security loop of elevator system.Each wherein relevant with mine hoist safety parameter has the sensor relevant with the wireless communication apparatus of for example transceiver, makes that when monitored parameter became dangerous, the state of sensor caused transceiver to close.The main transceiver relevant with the hoister control device transmits mark to first transceiver, and first transceiver sends it to next transceiver then, and so continues.When any parameter is in unsafe condition, mark will be not all wireless communication apparatus by safety return circuit transmit and get back to main transceiver; Therefore, controller will be apprised of and have unsafe condition.Via the hardwired supply that is connected on the building power supply, electromagnetic system adopts the charge circuit that for example is arranged on the elevator cars by induction coupling charging to the power that is used for transceiver by passive battery or battery system.Use the hardwired power supply to offset the advantage of wireless system, it is inconvenient as the line of attachment security circuit switching wherein to be used to the line of powering.Maintenance, cost that battery-operated needs are too many, and environment impacted.Induction coupling charge system complexity, and unreliable.

More than analyze the call button that also is applicable to car and platform place.

Summary of the invention

The objective of the invention is to a kind of safety return circuit, safety return circuit has and does not promptly rely on hardwired power supply also to disobey battery-powered parts, these parts are passive, wherein the detection of safe condition can combine with relevant transceiver, provide improvement alerting ability, low cost, lowly safeguard and be convenient to upgrade with low cost.Other purpose comprises provides the communication of the gig of improvement service call; The comprehensive wireless of gig service call transmits; And the simplification passive communication of gig service call.

According to the present invention, relevant with the different conditions of monitoring by the safety return circuit of gig and relevant with call button transceiver is passive, and this transceiver comprises for example radio frequency identification devices (RFID).Further according to the present invention, when having the gig unsafe condition open circuited switch can be connected with relevant passive transceiver or combination wherein.Further according to the present invention, the detection of unsafe condition can be the integral part of passive transceiver.An example is to use the adjacent structural parts (for example door part) of gig so that frequency tuning or the demodulation passive transceiver is determined the loop, thus the safety of the corresponding gig parameter of communication or unsafe state.

As is known, the electromagnetic energy power supply of RFID by receiving, and only the signal of itself unique frequencies or the signal of public frequency are responded, but this frequency has unique address code for independent RFID.RFID then will respond, and its mode is to transmit the signal that contains its address and contain the correlation parameter state in safety return circuit or the call button in this case.If the address mal, the frequency of RFID will be discerned response source.

Other purpose of the present invention and advantage will be understood in the detailed description of exemplary embodiment shown in the drawings.

Description of drawings

Fig. 1 is the preceding elevation view of the simplification of gig passage of the present invention and machine room;

Fig. 2 is the preceding elevation view of the simplification of elevator cars of the present invention;

Fig. 3-the 7th implements the rough schematic view of passive transceiver resonant tank of the present invention;

Fig. 8 is the partial side elevation view of access door lock, how carries out tuning near security-related structure member the time so that passive transmitter of the present invention to be described;

Fig. 9 is the simplification partial side elevation view of gig limiting device, how carries out tuning near security-related structure member the time so that passive transceiver of the present invention to be described.

The specific embodiment

With reference to figure 1, the passage 11 of elevator system comprises a plurality of

access doors

12,13, has one group of

door

12,13 for each platform.Every group of door has the passive transmitter 15 of for example RIFD relevant with corresponding access door lock.The state of door lock is the part of safety return circuit.If any door lock is locking not, the safety return circuit of gig will lose efficacy.Each platform also has up hall call button that has associated transceiver 14 and the descending hall call button that has associated transceiver 19, or has both.Passage is also arranged a plurality of transceivers 16 relevant with upper limit position switch and a plurality of

transceivers

17,18 relevant with lower position switch therein.In this example, in the machine room 20 of elevator system, elevator overspeed detection will have corresponding passive transmitter 22.Transceiver 23 and elevator cars 24 wire communications, and with other transceiver of elevator system and passive transmitter communication.For example, by the signal that transmits unique frequencies or have unique address code, transceiver 26 can be inquired the state of the access door of three lowest deck, so that inquire the state of each relevant door lock of each associated gate that is reflected by a relevant passive transmitter 15 continuously.Similarly, transceiver 26 can be inquired the passive transmitter relevant with lower position switch 17,18.Transceiver 27 can be inquired and the relevant passive transmitter 15 of top three plane passages door locks, and interrogating passive forwarder 16 is so that provide the indication of upper limit device state.Transceiver 23 then receives the communication signal of different passive transmitter responses in the expression passage from transceiver 26,27.But transceiver 23 also interrogating passive forwarder 22 so that determine the state of relevant overspeed sensor.According to the quantity of building inner platform, other transceiver can be set, for example transceiver 26,27, so that cover the scope of all transceivers 15 in the passage.

In Fig. 2, elevator cars 30 has an

opposite house

31,32 and the RFID33 relevant with the car door lock-switch.The emergency stop switch that elevator cars 30 also has a plurality of car call button that have relevant RFID34 and has relevant RFID35.As shown, also have master cock, have relative RFID36 in this case at car top.By any

transceiver

23,26 interrogating rfid 33-36.Other states of in gig, in safety return circuit, monitoring in addition, but do not illustrate for clarity.

RFID can be arranged to reflect by different way security-related gig parameter state.The simplest being illustrated in Fig. 3 and 4, the frequency that wherein contains cond 40 and inductor 41 determines that the RF loop disconnects (Fig. 3) or connects (Fig. 4) by switch 44 by switch 43.These any configurations will cause RFID that any response is not provided.On the other hand, RFID can cause and produce two different responses, a response expression safe condition, and another represents unsafe condition, as shown in Figure 5.Wherein, other cond 47 is connected with switch 48, and both are parallel to cond 40 and inductor 41.When state safety, cond 47 is in the loop, makes RFID respond under first frequency.Dangerous but if state becomes, switch 48 will respond under different frequency, and switch 48 will disconnect, and cond 47 will be in the loop, and then RFID will respond under the different frequency of expression unsafe condition.Use the double-response of this type to make controller identification detect the particular RFID of unsafe condition, compared with prior art, which switch the tandem tap safety return circuit does not provide open circuited indication, and therefore the indication of inefficacy character can not be provided.In the embodiment of Fig. 3-5, switch must be arranged to respond at the state of monitoring, and RFID should be near its location, and switch and line are contained in frequency and determine in the loop.

The optional form of response is illustrated among Fig. 7.Wherein, cond 40 and inductor 41 expression RFIF are near a state of structure 51, and this structure has magnetic resistance, as shown in Figure 6, but has different frequencies when not having adjacent magnetic resistance, as shown in Figure 7.This existence that can be used for detecting magnetic resistance 51 is with as safe condition, and the existence that perhaps detects magnetic resistance 51 is with as unsafe condition.Represent in these situations first at the access door switch, wherein a part is illustrated among Fig. 8.Wherein, lock edge 53 (lock flange) is fastened on the top, doorway.Locking component 55 is arranged on the access door 56.When flange 59 jointing edges 53, as shown in Figure 8, contact portion 62 (connects between two terminals of hoistway door lock switches usually, so that the indication door lock engages) will be near relevant RFID63, so that being provided, frequency determines alignment of tuned circuit, as shown in Figure 6, thus the response of expression safety is provided.But, do not abut RFID63 as fruit part 62, state as shown in Figure 7, and the response will not exist, or the expression unsafe condition.

Can obtain opposite state as shown in Figure 9.Wherein,

lower position switch

17,18 is expressed as being arranged in by support 68 and is installed on the framework 66 on the track 67.Known cam 71 is arranged on the main vertical frame opposing sideplates 74 with elevator platform, as well-known by support 72.As shown in the figure, when gig during near the bottom of passage, cam 71 will make its frequency, demodulation frequency determine the loop near switch 17, as shown in Figure 6, and according to employed agreement, not cause the response of RFID17, and cause the response of representing unsafe condition.Apparently, when gig descended in passage, cam 71 will be near other RFID18, because the position of elevator cars in passage, provided the indication of continuous unsafe condition.Therefore, can change frequency by magnetic flux and determine the loop, make the existence of magnetic flux represent safe condition (Fig. 8) or unsafe condition (Fig. 9).

Call button can have separately and is combined in the RFID frequency and determines passenger's actuation button switch (Fig. 3-5) in the loop, and perhaps they have the passenger's mobile member (Fig. 6 and 7) that has magnetic flux separately.In having the system that Push-button lamp represents when to call out, lamp is wired on the building power supply usually, and RFID can connect power supply by solid-state switch, is sent to the calling acknowledgment signal of RFID with response.Inquiry should be carried out with the repeated freqnency of for example 5Hz or 10Hz, be enough to overlap with press-button actuated, wherein press-button actuated can be 200 milliseconds-500 milliseconds such very brief.

Claims

1. the safety return circuit of the gig of the security-related a plurality of gig parameter states of monitoring, described parameter comprises at least one access door lock, car door lock, upper limit, lower limit, emergency stop switch, master cock and overspeed switch; It is characterized in that:

Transmit interrogation signal and receive at least one transceiver (23,26,27) of the response of described interrogation signal, and

With at least one passive radio frequency-identification unit (22,33,35,36) of a corresponding described parameter correlation (RFID), the frequency of any described RFID relevant with described relevant parameter is determined loop (40,41,43,44,47,48), so that (a) under the situation of the state safety of relevant parameter, the transmission response of expression safe condition can be provided at the interrogation signal from a described transceiver, and (b) when relevant parameter is dangerous, does not provide and transmit response.

2. safety return circuit as claimed in claim 1 is characterized in that,

Described RFID comprises disconnection and connects so that response relevant parameter state of switch (44,48), described switch determines that with the frequency of described RFID loop (40,41) is relevant, so that determine frequency, thus the transmission response that when described switch is in the position of the situation of representing relevant parameter state safety, produces the expression safe condition.

3. safety return circuit as claimed in claim 2 is characterized in that, described switch (43,48) and described frequency determine that the frequency-determining element (40,41,47) in loop is connected in series.

4. safety return circuit as claimed in claim 2 is characterized in that, described switch (44) determines that with described frequency the frequency-determining element (40,41) in loop is connected in parallel.

5. safety return circuit as claimed in claim 2 is characterized in that, also comprises:

Other frequency-determining element (47); And

Described switch (48) connects described frequency-determining element and determines on the loop to described frequency.

6. safety return circuit as claimed in claim 1 is characterized in that,

Described frequency determines that loop (40,41) is near described RFID and have magneto-resistive structure and respond; And also comprise:

Have magneto-resistive structure (51,71), the state of described relevant parameter is represented in its position, and the safety of described parameter or unsafe condition exist or do not exist near described RFID by described structure determines that its mode will change the frequency that described frequency is determined the loop.

7. safety return circuit as claimed in claim 6 is characterized in that, there is the expression safe condition in described structure (71) near described RFID (17).

8. safety return circuit as claimed in claim 6 is characterized in that, described structure (71) exists and has magnetic resistance near described RFID (18) represents unsafe condition.

9. the gig calling system of a monitoring at least one car call button and hall call button is characterized in that:

At least one passive radio frequency-identification unit (14,19,34) relevant with a corresponding described call button (RFID), the frequency of any described RFID relevant with described respective call button is determined loop (40,41,43,44,47,48), so that (a) when activating the corresponding button, the expression transmission that button activated response can be provided at the interrogation signal from a described transceiver, and (b) when the corresponding button does not activate, do not provide and transmit response.

10. gig calling system as claimed in claim 9 is characterized in that,

Described RFID comprises that green phase should push-button switch (44,48), described switch determines that with the frequency of described RFID loop (40,41,47) is relevant, so that determine frequency, thereby when being in the position that expression the corresponding button activated, described switch forms the transmission response of expression call demand.

11. gig calling system as claimed in claim 10 is characterized in that, described switch (43,48) and described frequency determine that the frequency-determining element (40,41,47) in loop is connected in series.

12. gig calling system as claimed in claim 10 is characterized in that, described switch (44) determines that with described frequency the frequency-determining element (40,41) in loop is connected in parallel.

13. gig calling system as claimed in claim 10 is characterized in that, also comprises:

Other frequency-determining element (47); And

Described switch (48) connects described frequency-determining element and determines on the loop (40,41) to described frequency.

14. gig calling system as claimed in claim 9 is characterized in that,

Described frequency determines that the loop is near described RFID and have magneto-resistive structure and respond; And also comprise:

Have magneto-resistive structure, its position determines by described the corresponding button, the actuating of described button or not actuating state exist near described RFID or do not exist by described structure and determine that its mode will change the frequency that described frequency is determined the loop.

15. gig calling system as claimed in claim 6 is characterized in that, there is the expression call demand in described structure near described RFID.

16. elevator system that comprises safety return circuit, safety return circuit is used to monitor a plurality of security-related gig parameter states, and described parameter comprises at least one access door lock, car door lock, upper limit, lower limit, emergency stop switch, master cock and overspeed switch; Described elevator system also is used for monitoring at least one car call button and hall call button, it is characterized in that:

With at least one passive radio frequency-identification unit (22,33,35,36) of a corresponding described parameter correlation (RFID), the frequency of any described RFID relevant with described relevant parameter is determined loop (40,41,43,44,47,48), so that (a) under the situation of the state safety of relevant parameter, the transmission response of expression safe condition can be provided at the interrogation signal from a described transceiver, and (b) when relevant parameter is dangerous, this transmission response is not provided, and