CN113644939A - Inter-call communication system and communication control method - Google Patents
Inter-call communication system and communication control method Download PDFInfo
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- CN113644939A CN113644939A CN202111189792.8A CN202111189792A CN113644939A CN 113644939 A CN113644939 A CN 113644939A CN 202111189792 A CN202111189792 A CN 202111189792A CN 113644939 A CN113644939 A CN 113644939A
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- call control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/60—Systems for communication between relatively movable stations, e.g. for communication with lift
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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
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
- B66B1/14—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. push-buttons, for indirect control of movements
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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
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3446—Data transmission or communication within the control system
- B66B1/3453—Procedure or protocol for the data transmission or communication
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
- B66B3/002—Indicators
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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
- B66B5/0025—Devices monitoring the operating condition of the elevator system for maintenance or repair
Abstract
The application relates to the field of communication, provides a communication system and communication control method between calling board, utilizes the quick communication rate advantage of ethernet for communication between calling board is more real-time, and this system includes control center and a plurality of calling board control unit, and every calling board control unit includes: a main control chip including a medium access control layer; a first physical layer and a second physical layer; the system comprises a first network isolation transformer and a second network isolation transformer, wherein the first network isolation transformer is connected with a first physical layer and is connected with a first-level call control unit through a first RJ-45 socket, and the second network isolation transformer is connected with a second physical layer and is connected with a next-level call control unit through a second RJ-45 socket; and the display module is connected with the main control chip and is provided with a first group of display lamps for displaying the communication state of the current-level call control unit and the previous-level call control unit and a second group of display lamps for displaying the communication state of the current-level call control unit and the next-level elevator control unit.
Description
Technical Field
The application relates to the field of communication, in particular to a communication technology between calls.
Background
The elevator is a complex system involving safety, and the hall call board is an indispensable part of the system. Each elevator is provided with an outbound board at each service floor, and the outbound board of the elevator is the main interaction means of the elevator and passengers.
At present, the traditional call scheme of an elevator control system is mainly in a Canbus, RS485 and RS232 mode and is communicated with the elevator control system.
The traditional scheme has the problems of complex call installation and debugging and higher maintenance cost.
Disclosure of Invention
The application aims to provide a communication system and a communication control method between calls, which utilize the advantage of fast communication speed of Ethernet to ensure that the communication between the calls is more real-time.
An embodiment of the application discloses communication system between calling landing, including control center and a plurality of calling landing control unit, wherein a plurality of calling landing control unit with control center is connected for the chrysanthemum chain structure, control center be used for controlling the elevator operation and with calling landing control unit interaction calling landing signal, wherein, each calling landing control unit includes: the system comprises a main control chip, a first physical layer, a second physical layer, a first network isolation transformer, a second network isolation transformer and a display module; wherein:
The main control chip comprises a medium access control layer;
the medium access control layer is respectively connected with the first physical layer and the second physical layer;
the first network isolation transformer is connected with the first physical layer and is connected with a primary call control unit through a first RJ-45 socket, and the second network isolation transformer is connected with the second physical layer and is connected with a secondary call control unit through a second RJ-45 socket;
the display module is connected with the main control chip and is provided with a first group of display lamps for displaying the communication state of the current calling call control unit and the previous calling call control unit and a second group of display lamps for displaying the communication state of the current calling call control unit and the next calling call control unit.
In a preferred embodiment, each of the call control elements further comprises: the uplink key and the downlink key are respectively connected with the main control chip.
In a preferred embodiment, the first and second groups of display lamps each include a green lamp indicating normal communication and a red lamp indicating abnormal communication.
In a preferred example, each call control unit further comprises a power supply unit connected with the first network isolation transformer and the second network isolation transformer.
One embodiment of the application discloses a communication control method of an inter-call communication system, which comprises the following steps:
initializing the network configuration of the inter-call communication system, and starting a first physical layer and closing a second physical layer by default in a plurality of call control units;
one of the plurality of call control units receives an enumeration data frame sent by a superior call control unit through a first physical layer, and responds to a reply to the superior call control unit according to the enumeration data frame, and the call control unit closes the first physical layer and opens a second physical layer;
the call control unit updates the enumeration data frame and sends the updated enumeration data frame to a next-level call control unit, and the next-level call control unit receives the updated enumeration data frame through a first physical layer; and
and the call control unit closes the second physical layer and starts the first physical layer.
In a preferred embodiment, initializing the network configuration of the inter-call communication system comprises: and closing the auto-negotiation mode of the first physical layer and the second physical layer, and defaulting that the first physical layer and the second physical layer adopt a 100M Ethernet rate and a full duplex mode.
In a preferred example, the enumerated data frame includes a floor number value.
In a preferred embodiment, the step of updating the enumeration data frame by the call control unit comprises: adding 1 to a floor number value included in the enumeration data frame.
In a preferred embodiment, the method further comprises the following steps:
one of the plurality of call control units receives a heartbeat data frame sent by a superior call control unit through a first physical layer, responds to the superior call control unit according to the heartbeat data frame, closes the first physical layer and opens a second physical layer, wherein the heartbeat data frame comprises the running or maintenance state of the elevator, the uplink and downlink requests of each call control unit and the uplink and downlink state of the elevator;
the call control unit sends a heartbeat data frame to a next-level call control unit, and the next-level call control unit receives the heartbeat data frame through a first physical layer; and
and the call control unit closes the second physical layer and starts the first physical layer.
In a preferred embodiment, the method further comprises the following steps:
one of the plurality of call control units receives a heartbeat data frame sent by a next-level call control unit through a second physical layer, if the call control unit has an uplink and downlink request, the uplink and downlink request is inserted into the heartbeat data frame, and the call control unit closes the second physical layer and opens the first physical layer;
The call control unit replies the updated heartbeat data frame to the superior call control unit through the first physical layer.
Compared with the prior art, the method has the following beneficial effects:
the method and the device utilize the basic transmission characteristics of the data link layer and the physical layer of the Ethernet, do not relate to the high-layer protocol of the Ethernet, and utilize the advantage of the rapid communication rate of the Ethernet, so that the communication between the calls is more real-time. The calling system adopts a bidirectional daisy chain cascade structure, so that the influence on the next calling and the subsequent calling due to the fault of the calling of the previous calling is avoided.
Drawings
Fig. 1 is a schematic diagram of an inter-call communication system in an embodiment of the present application.
Fig. 2 is a schematic view of a call control unit in an embodiment of the application.
Fig. 3 is a flowchart illustrating a communication control method of the inter-call communication system according to an embodiment of the present application.
Fig. 4 is a flowchart illustrating a communication control method of the inter-call communication system according to another embodiment of the present application.
Fig. 5 is a flowchart illustrating a communication control method of the inter-call communication system according to another embodiment of the present application.
Fig. 6 is a flow diagram of software control of an inter-call communication system in an embodiment of the present application.
Detailed Description
In the following description, numerous technical details are set forth in order to provide a better understanding of the present application. However, it will be understood by those skilled in the art that the technical solutions claimed in the present application may be implemented without these technical details and with various changes and modifications based on the following embodiments.
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
In one embodiment of the present application, an inter-call communication system is disclosed, and a schematic diagram of an inter-call communication system is shown in FIG. 1. The inter-call communication system includes a control center 110 and a number of call control units 120. The plurality of call control units 120 are connected with the control center 110 in a daisy chain structure, and the control center 110 is used for controlling the operation of the elevator and interacting call signals with the call control units 120.
Referring to fig. 2, each call control unit comprises a main control chip 201, a first physical layer (PHY-a) 203, a second physical layer (PHY-B) 204, a first network isolation transformer 205, a second network isolation transformer 206 and a display module 209. The main control chip 201 includes a medium access control layer 202. The medium access control layer 202 is connected to the first physical layer 203 and the second physical layer 204, respectively. The first network isolation transformer 205 is connected to the first physical layer 203 and to the primary call control unit via a first RJ-45 jack 207, and the second network isolation transformer 206 is connected to the second physical layer 204 and to the secondary call control unit via a second RJ-45 jack 208. For example, the first physical layer PHY-A of an N-level call control is connected to an upper level (N-1) call control, and the second physical layer PHY-B of an N-level call control is connected to a lower level (N + 1) call control.
The display module 209 is connected to the main control chip 201, and has a first group of display lamps 210 for displaying the communication status between the current call control unit and the previous call control unit, and a second group of display lamps 211 for displaying the communication status between the current call control unit and the next call control unit.
In one embodiment, each of the call control elements further comprises: the key assembly comprises an uplink key 212 and a downlink key 213, wherein the uplink key 212 and the downlink key 213 are respectively connected with the main control chip 201.
In one embodiment, the first and second sets of display lights 210 and 211 each include a green light indicating normal communication and a red light indicating abnormal communication.
In one embodiment, each of the call control units further comprises a power supply unit 214 connecting the first network isolation transformer 205 and the second network isolation transformer 206. The network isolation transformer has two purposes in this application: the communication signal is isolated from the transformer of the POE power supply. On one hand, the network isolation transformer filters the differential signal sent by the physical layer by using the coil coupling of the differential mode coupling to enhance the signal, and the differential signal is coupled to the other end of the connecting network wire with different levels by the conversion of an electromagnetic field. On the other hand, different levels between different network devices connected by the network cable are isolated to prevent different voltages from transmitting through the network cable to damage the devices. In addition, the lightning protection device can also play a certain lightning protection role on equipment. The signal of this application adopts magnetism to keep apart, can reduce and call for a call damage probability.
In one embodiment of the application, a communication control method of an inter-call communication system is disclosed, and fig. 3 shows a flow chart of the communication control method. The method comprises the following steps:
In one embodiment, initializing the network configuration of the inter-call communication system includes: and closing the auto-negotiation mode of the first physical layer and the second physical layer, and defaulting that the first physical layer and the second physical layer adopt a 100M Ethernet rate and a full duplex mode.
In one embodiment, the enumerated data frame includes a floor number value.
In one embodiment, the step of the call control element updating the enumeration data frame comprises: adding 1 to a floor number value included in the enumeration data frame. It should be noted that the next-level call control means is on-floor of the present-level call control means, and therefore, the floor number value corresponding to the next-level call control means is the floor number value corresponding to the present-level call control means plus 1.
In one embodiment, as shown with reference to fig. 4, the method of communication control for an inter-call communication system further comprises:
In step 403, the call control unit closes the second physical layer and activates the first physical layer.
In one embodiment, as shown with reference to fig. 5, the method of communication control for an inter-call communication system further comprises:
It should be noted that, during the transmission process of the heartbeat data frame, when the heartbeat data frame is sent from N-1 level to N level (for example, from layer 2 to layer 3), the heartbeat data frame is not updated, and the original text transfers the original data of the control center. When the heartbeat data frame is responded from N level to N-1 level (such as layer 3 to layer 2), the heartbeat data frame is updated, and if the current level has an uplink request and a downlink request, the request information of the level is inserted into the heartbeat data frame (namely, the current level is replied to the layer 2 after the uplink request data of the layer 3 is added into the data packet of the layer 4). And if the current level has no uplink and downlink requests, transmitting the data frame to the N-1 level original text (namely forwarding a reply data frame of the 4 th layer to the 2 nd layer original text).
It should be noted that for ease of understanding, "send" is the transfer of data from level N-1 to level N, and "answer" is the transfer of data from level N +1 to level N.
In order to better understand the technical solution of the present application, a specific example is described below, and the details listed in the example are mainly for the convenience of understanding and are not intended to limit the protection scope of the present application.
As shown in fig. 1 and 2, an ethernet inter-call communication system includes an elevator control center and a number of elevator call units (i.e., call control units), e.g., call units N, N-1, N + 1. The elevator control center is mainly responsible for elevator operation control and call signal interaction, and an Ethernet interface of the elevator control center provides a POE power supply function and is connected with a first elevator call unit (N-1) through an Ethernet cable.
The structures of all elevator calling units are consistent, and the functions of self-adaptive numbering of floors, passenger uplink and downlink key request and polling are realized in an internal software mode. The calling unit comprises PHY-A, PHY-B, a network isolation transformer, RJ-45, a key module, a power supply unit display module and a main control chip.
The display module is used for displaying the state of the elevator and comprises two groups of state display lamps. When the detection is normal with the communication of the upper level and the lower level, the corresponding green light is on, otherwise, the red light is on, so that the elevator is very convenient to overhaul, and the fault position can be judged by observing the calling elevator state light.
The key module may include two keys (up and down) for elevator passengers to perform up and down demand control. The buttons (up, down) are the basic functions of elevator calls, the main body of the passenger interacting with the elevator system.
RJ-45 is a twisted pair Ethernet port, which mainly uses twisted pair as transmission medium.
The network filter transformer (also called network isolation transformer) is mainly used for signal level coupling, and can improve transmission distance and reduce external interference.
PHY-a and PHY-B are used to transmit and receive data frames of ethernet with link layer Auto Negotiation and Auto-MDIX transceiver matching functions.
The power supply unit transforms the POE power transmitted by the Ethernet cable to provide proper power supply voltage for the interior of the Ethernet call unit.
The main control chip is provided with a chip with an Ethernet MAC function and can control PHY switching and data processing transmission flow.
The display module may display the floor and other network information such as weather, service provider advertising information, etc.
A call control board module is installed on each floor, and the software flow schematic diagram of the call system is shown in FIG. 6 and comprises the following steps:
1. Ethernet MAC parameters are initialized, such as full duplex/half duplex mode, 10M/100M rate configuration.
2. PHY-A is enabled by default and PHY-B is disabled. PHY-B may be controlled by software not to be turned on at the same time as PHY-a.
3. And in an idle state, waiting for the data issued by the control center of the N-1 call control board or the machine room elevator system, wherein the issued data can be a floor query command or a heartbeat command of the control center.
4. After receiving the effective ethernet frame data, a response reply is performed according to the instruction, for example, after a floor enumeration instruction, 1 is added after the floor number N-1, which indicates that the floor is the nth floor.
5. After the data of the response N-1 is sent, an N +1 data frame is ready to be sent, and the issued data comprises information such as a command (enumeration or heartbeat instruction), the number of the floor, the operation of the elevator and the like.
6. PHY-A is turned off, PHY-B is turned on, and Ethernet communication with the N +1 call control board is established.
7. And after the communication link is stable, sending the prepared data to be sent in the step 5.
8. After the response data of the N-1 are received, storing key data, such as information of a floor number, a request for going upstairs and downstairs and the like, as temporary storage data to wait for uploading information next time.
9. Immediately shut down PHY-B, start PHY-a, enter idle state, repeat 3.
The data transmitted by the Ethernet comprises enumeration data frames and heartbeat data frames, wherein the enumeration data frames are mainly used for floor enumeration, after an enumeration command is received, the number value of the N-1 floor is received and is +1, and after a physical layer is switched, the number value of the current floor is continuously forwarded to N +1, so that automatic floor enumeration and self-adaption of the number of floors are realized. Enumeration data frames occur during which the host needs to enumerate floors, the intervals during enumeration being in the order of minutes, during which no heartbeat data frames are sent. The heartbeat data frame is mainly used as a quasi-synchronous mode to quickly transmit the information of the floor call button.
The transmission interval for each time the control center transmits a data frame (whether an enumeration or heartbeat data frame) is very short, typically on the order of milliseconds, requiring a fast response to be achieved.
The sending process of the enumeration data frame comprises the following steps:
step 1: when the current calling unit monitors the enumeration data frame sent by the previous calling unit through PHY-A, the current calling unit receives the floor number +1 of the previous enumeration data frame and replies the current processing floor number to the previous calling unit, and at the moment, the full-duplex transceiving communication with the previous calling unit is completed.
Step 2: the current calling unit is then switched to the physical layer PHY-B, and at the moment, the current calling unit is communicated with the next calling unit, the current calling unit firstly sends an enumeration data frame containing the floor value of the current calling unit,
And step 3: similarly, the next call unit will reply to the data frame of floor value +1, the floor value of the next level (when the next enumeration data frame of the previous level is received, the current floor value stored in the previous level will be replied), if the next enumeration data frame is not received, the last layer of enumeration is considered.
And 4, step 4: and the current calling unit is switched back to the physical layer PHY-A, and the monitoring of the previous level is continued.
In the process of enumerating floors, the control center can know the total number of floors according to the number of times of sending enumeration data frames as required.
The heartbeat data frame maintains the daily communication of the calls, because the next-level call unit sends a data frame to the previous level from the next-level call unit (because the previous-level PHYB is not opened, except for the host), the heartbeat data frame is a bridge for maintaining the communication between the previous-level call and the next-level call, the switching steps of the heartbeat data frame and the physical layer of the enumeration data frame are basically the same, and the main difference is in the data content:
(1) the data content sent (or forwarded) from the previous stage to the next stage includes: the current elevator running or maintenance state, the elevator up-down state and the like;
(2) the data content sent (or forwarded) from the next stage to the previous stage includes: floor value + uplink and downlink requests.
It is noted that, in the present patent application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element. In the present patent application, if it is mentioned that a certain action is executed according to a certain element, it means that the action is executed according to at least the element, and two cases are included: performing the action based only on the element, and performing the action based on the element and other elements. The expression of a plurality of, a plurality of and the like includes 2, 2 and more than 2, more than 2 and more than 2.
All documents mentioned in this specification are to be considered as being incorporated in their entirety into the disclosure of this specification so as to be subject to modification as necessary. It should be understood that the above description is only a preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of the present disclosure should be included in the scope of protection of one or more embodiments of the present disclosure.
In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Claims (10)
1. An inter-call communication system, comprising: control center and a plurality of call control unit, wherein a plurality of call control unit with control center is connected for the chrysanthemum chain structure, control center is used for controlling the elevator operation and with call control unit interaction call signal, wherein, each call control unit includes: the system comprises a main control chip, a first physical layer, a second physical layer, a first network isolation transformer, a second network isolation transformer and a display module; wherein:
The main control chip comprises a medium access control layer;
the medium access control layer is respectively connected with the first physical layer and the second physical layer;
the first network isolation transformer is connected with the first physical layer and is connected with a primary call control unit through a first RJ-45 socket, and the second network isolation transformer is connected with the second physical layer and is connected with a secondary call control unit through a second RJ-45 socket;
the display module is connected with the main control chip and is provided with a first group of display lamps for displaying the communication state of the current calling call control unit and the previous calling call control unit and a second group of display lamps for displaying the communication state of the current calling call control unit and the next calling call control unit.
2. The inter-call communication system according to claim 1, wherein each of said call control elements further comprises: the uplink key and the downlink key are respectively connected with the main control chip.
3. The inter-call communication system according to claim 1, wherein said first and second sets of display lights each include a green light indicating normal communication and a red light indicating abnormal communication.
4. Inter-call communication system according to claim 1, wherein each of said call control units further comprises a power supply unit connecting said first network isolation transformer and said second network isolation transformer.
5. A communication control method of an inter-call communication system according to any one of claims 1 to 4, characterized by comprising:
initializing the network configuration of the inter-call communication system, and starting a first physical layer and closing a second physical layer by default in a plurality of call control units;
one of the plurality of call control units receives an enumeration data frame sent by a superior call control unit through a first physical layer, and responds to a reply to the superior call control unit according to the enumeration data frame, and the call control unit closes the first physical layer and opens a second physical layer;
the call control unit updates the enumeration data frame and sends the updated enumeration data frame to a next-level call control unit, and the next-level call control unit receives the updated enumeration data frame through a first physical layer; and
and the call control unit closes the second physical layer and starts the first physical layer.
6. The communication control method of claim 5, wherein initializing a network configuration of the inter-call communication system comprises: and closing the auto-negotiation mode of the first physical layer and the second physical layer, and defaulting that the first physical layer and the second physical layer adopt a 100M Ethernet rate and a full duplex mode.
7. The communication control method according to claim 5, wherein the enumeration data frame includes a floor number value.
8. The communication control method according to claim 7, wherein the step of the call control element updating the enumerated data frame includes: adding 1 to a floor number value included in the enumeration data frame.
9. The communication control method according to claim 5, further comprising:
one of the plurality of call control units receives a heartbeat data frame sent by a superior call control unit through a first physical layer, responds to the superior call control unit according to the heartbeat data frame, closes the first physical layer and opens a second physical layer, wherein the heartbeat data frame comprises the running or maintenance state of the elevator, the uplink and downlink requests of each call control unit and the uplink and downlink state of the elevator;
The call control unit sends a heartbeat data frame to a next-level call control unit, and the next-level call control unit receives the heartbeat data frame through a first physical layer; and
and the call control unit closes the second physical layer and starts the first physical layer.
10. The communication control method according to claim 5, further comprising:
one of the plurality of call control units receives a heartbeat data frame sent by a next-level call control unit through a second physical layer, if the call control unit has an uplink and downlink request, the uplink and downlink request is inserted into the heartbeat data frame, and the call control unit closes the second physical layer and opens the first physical layer;
the call control unit replies the updated heartbeat data frame to the superior call control unit through the first physical layer.
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