CN105185072B - Multi-channel switch amount transmission method and device - Google Patents
Multi-channel switch amount transmission method and device Download PDFInfo
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- CN105185072B CN105185072B CN201510370136.6A CN201510370136A CN105185072B CN 105185072 B CN105185072 B CN 105185072B CN 201510370136 A CN201510370136 A CN 201510370136A CN 105185072 B CN105185072 B CN 105185072B
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Abstract
The invention discloses multi-channel switch amount transmission method and devices, are related to data communication technology field.A kind of multi-channel switch amount transmission method disclosed by the invention, include: reception data frame, if the data frame that judgement receives includes switching value information, obtains transmission mode from the data frame, wherein, acquired transmission mode accounts for for separate time slots mode or altogether slotted mode；Switching value information is obtained according to acquired transmission mode and preset switching value information and the time slot/bit corresponding relationship for carrying it, the specific location where switching value information determines the transmission channel and corresponding record of switching value information.The invention also discloses the devices of the implementable above method, and another multi-channel switch amount transmission method and its device.Technical scheme, which can be realized, carries out reliable transmission to active switch amount signal collected or passive switch amount signal, and scene is widely used.
Description
Technical field
The present invention relates to data communication technology fields, in particular to multi-channel switch amount transmission method and device.
Background technique
In modern industry, the effect of switching value is more and more important, it is usually used in the detection of industrial equipment, for industry
Equipment provides control signal.With the continuous development of science and technology, the continuous improvement of the degree of automation, to switch in industrial application
The requirement for measuring acquisition and the transmission of signal is also higher and higher.Switch value input interface generally includes two kinds of interface forms, one is
Dry contact form, another kind are wet contact forms.Wherein stem grafting point interface refers to that a kind of passive switch, interface itself do not provide
Power supply can be used to acquire active switch amount；Wet contact interface refers to a kind of active switch, and interface itself can provide power supply, 2
Polarized between a contact can be used to acquire passive switch amount.In the prior art, for the acquisition of on-off model, letter
The interface form of number access device is fixed, that is, equipment interface can only be adapted to a form of switch value input interface form,
If the use environment of the access device changes or corresponding switch value input interface mode changes, it usually needs
The access device for replacing matched interfaces, is just able to achieve signal acquisition purpose, it can be seen that, access device is for opening in the prior art
The versatility that input interface is measured in pass is in urgent need to be improved.
On the other hand, at present access layer equipment be all in most cases as the node device in data communication network,
It needs collected data to be carried out in a manner of reliably and efficiently point-to-point or point-to-multipoint transmission.
In conclusion how to provide a kind of switch value input interface, active switch amount signal and passive switch amount can be compatible with
The reliable acquisition of signal, and be able to achieve on-off model reliable transmission and be a problem to be solved by those skilled in the art.
Summary of the invention
The technical problem to be solved by the invention is to provide multi-channel switch amount transmission method and devices, to realize to institute
The active switch amount signal of acquisition and the reliable transmission of passive switch amount signal.
In order to solve the above-mentioned technical problem, the invention discloses a kind of multi-channel switch amount transmission methods, this method comprises:
Data frame is received, if the data frame that judgement receives includes switching value information, obtains and passes from the data frame
Defeated mode, wherein acquired transmission mode is separate time slots mode or accounts for slotted mode altogether；
It is corresponding with the time slot/bit for carrying it according to acquired transmission mode and preset switching value information
Relation acquisition switching value information, the specific location where switching value information determine the transmission channel and correspondence of switching value information
Record.
Optionally, in the above method, judge that the data frame received includes that the process of switching value information includes:
When a time slot of the data frame received includes scheduled multiframe alignment code, the data frame packet received is judged
Switching value information is included, and the time slot is confirmed as first the first time slot of subframe of the data frame.
Optionally, in the above method, the scheduled multiframe alignment code is identified in fixed bit when designing for system
Set fixed value in position.
Optionally, in the above method, the process that transmission mode is obtained from the data frame includes:
Received switching value is determined according to the transmission mode indication code that the multiframe alignment code includes in a slot
The transmission mode of information.
Optionally, in the above method, the transmission mode indication code is identified in fixed bit position when designing for system
In set fixed value, wherein the corresponding transmission mode indication code of separate time slots mode and account for the corresponding biography of slotted mode altogether
Defeated mode indication code fixed value set in fixed bit position is different.
Optionally, it in the above method, when transmission mode is separate time slots mode, according to determining transmission mode, presets
Switching value information and carry its time slot/bit corresponding relationship obtain switching value information process include:
From the 2nd, 3, setting is used for transmission in the bit of switching value information and obtains switching value letter in the identical time slots of 4 subframes
Breath.
Optionally, in the above method, the 2nd, 3, the setting in the identical time slots of 4 subframes be used for transmission the ratio of switching value information
Special position is the 2nd, 3, preceding 4 bits of each time slot of 4 subframes.
Optionally, it in the above method, when transmission mode is to account for slotted mode altogether, according to determining transmission mode, presets
Switching value information and carry its time slot/bit corresponding relationship obtain switching value information process include:
Setting, which is used for transmission in the bit of switching value information, from first time slot of 2-8 subframe obtains switching value letter
Breath.
The invention also discloses a kind of multi-channel switch amount transmission methods, this method comprises:
Multi-channel switch amount is used for when existing in network system according to the instruction judgement for starting transmitting switch amount information
When the data frame of information transmission, according to the instruction of the transmission mode of data frame use and preset switching value information and carrying
The data frame of switching value information including current channel is passed through time slot and deploys feeding by its time slot/bit corresponding relationship
Transmission network；
When the data frame for the transmission of multi-channel switch amount information is not present in network system, in data frame to be sent
In, insertion notebook data frame is for starting the instruction of transmitting switch amount information and the instruction of transmission mode, according to the transmission of insertion
The transmission mode of the instruction of mode and preset switching value information and the time slot/bit corresponding relationship for carrying it, will wrap
The data frame for including the switching value information of current channel is deployed by time slot is sent into transmission network；
Wherein, the transmission mode accounts for for separate time slots mode or altogether slotted mode.
Optionally, in the above method, the instruction judgement that the basis is used to start transmitting switch amount information exists for more
The process of data frame of channel switch amount information transmission includes:
When a time slot in the data frame received includes the instruction for starting transmitting switch amount information, net is judged
There is the data frame for the transmission of multi-channel switch amount information in network system, and the time slot is confirmed as the of the data frame
One the first time slot of subframe.
Optionally, in the above method, for starting the instruction of transmitting switch amount information are as follows: in first subframe of data frame
The predetermined multiframe alignment code of fixed bit position insertion in first time slot.
Optionally, in the above method, the transmission mode instruction are as follows: in first subframe of the data frame when system designs
First time slot in determined by the transmission mode indication code that is inserted into fixed bit position, wherein separate time slots mode
Corresponding transmission mode indication code and account for what the corresponding transmission mode indication code of slotted mode was inserted into fixed bit position altogether
Fixed value is different.
Optionally, in the above method, according to the instruction of transmission mode and preset switching value information and carry its when
The data frame of switching value information including current channel is passed through corresponding time slot allotment and is sent into biography by gap/bit corresponding relationship
The process of defeated network includes:
When transmission mode is designated as separate time slots mode, it is a multi-frame as switching value information using 4 subframes and transmits
Unit, the switching value information in the channel determined according to current channel in Design of Network System and the time slot/bit for carrying it
The corresponding relationship of position, the sequence of the write instructions channel switch amount information in the fixed bit position in the 2nd, 3,4 subframe time slots
Code, and it is sent to transmission network.
Optionally, in the above method, according to the instruction of transmission mode and preset switching value information and carry its when
The data frame of switching value information including current channel is passed through corresponding time slot allotment and is sent into biography by gap/bit corresponding relationship
The process of defeated network includes:
When transmission mode is designated as accounting for slotted mode altogether, it is a multi-frame as switching value information using 8 subframes and transmits
Unit, the switching value information in the channel determined according to current channel in Design of Network System and the time slot/bit for carrying it
The corresponding relationship of position, in the sequence code of the fixed bit position write instructions of the affiliated sub first time slot channel switch amount information, and
It is sent to transmission network.
The invention also discloses a kind of multi-channel switch amount transmitting device, which includes:
Judging unit is received, data frame is received, and judges whether the data frame received is switching value information, and sentencing
When the data frame that disconnecting receives is switching value information, transmission mode is obtained from the data frame, wherein acquired transmission mould
Formula is separate time slots mode or accounts for slotted mode altogether；
Switching value information acquisition unit according to acquired transmission mode and preset switching value information and carries it
Time slot/bit corresponding relationship obtain switching value information, the specific location where switching value information determines switching value
The transmission channel and corresponding record of information.
Optionally, in above-mentioned apparatus, the reception judging unit judges that the data frame received refers to as switching value information:
When first time slot of first subframe of the data frame received includes scheduled multiframe alignment code, judgement is connect
The data frame received is switching value information.
Optionally, in above-mentioned apparatus, the scheduled multiframe alignment code is identified in fixed bit when designing for system
Set fixed value in position.
Optionally, in above-mentioned apparatus, the reception judging unit obtains transmission mode from the data frame and refers to:
It is connect according to the transmission mode indication code determination for including in first time slot of the first of the data frame subframe
The transmission mode of the switching value information received.
Optionally, in above-mentioned apparatus, the transmission mode indication code is identified in fixed bit position when designing for system
In set fixed value, wherein the corresponding transmission mode indication code of separate time slots mode, the corresponding biography of He Gongzhan slotted mode
Defeated mode indication code, set fixed value is different in fixed bit position.
Optionally, in above-mentioned apparatus, when transmission mode is separate time slots mode, the switching value information acquisition unit,
According to determining transmission mode, preset switching value information and the time slot/bit corresponding relationship for carrying it obtain switching value
Information refers to:
From the 2nd, 3, setting is used for transmission in the bit of switching value information and obtains switching value letter in the identical time slots of 4 subframes
Breath.
Optionally, in above-mentioned apparatus, the 2nd, 3, setting is used for transmission the bit of switching value information in the identical time slots of 4 subframes
Position for the 2nd, 3, preceding 4 bits of each time slot of 4 subframes.
Optionally, in above-mentioned apparatus, when transmission mode is to account for slotted mode altogether, the switching value information acquisition unit,
According to determining transmission mode, preset switching value information and the time slot/bit corresponding relationship for carrying it obtain switching value
Information refers to:
Setting, which is used for transmission in the bit of switching value information, from first time slot of 2-8 subframe obtains switching value letter
Breath.
The invention also discloses a kind of multi-channel switch amount transmitting device, which includes:
Indicate information insertion unit, there is no the data frames for the transmission of multi-channel switch amount information in network system
When, in data note to be sent, insertion notebook data frame is used to start the instruction and transmission mode of transmitting switch amount information
Instruction, wherein the transmission mode is separate time slots mode or accounts for slotted mode altogether；
Switching value information transmission unit, according to the transmission mode and preset of the instruction information insertion unit insertion
Switching value information and the time slot/bit corresponding relationship for carrying it, by the data frame of the switching value information including current channel
It is sent into transmission network by corresponding time slot allotment, and according to the instruction for starting transmitting switch amount information in network system
When there is the data frame for the transmission of multi-channel switch amount information in judgement, the instruction of the transmission mode used according to the data frame with
And preset switching value information and its time slot/bit corresponding relationship is carried, by the switching value information including current channel
Data frame pass through time slot allotment be sent into transmission network.Optionally, in above-mentioned apparatus, the basis is for starting transmitting switch amount
The instruction judgement of information exists to be referred to for the data frame of multi-channel switch amount information transmission:
When a time slot in the data frame received includes the instruction for starting transmitting switch amount information, net is judged
There is the data frame for the transmission of multi-channel switch amount information in network system, and the time slot is confirmed as the of the data frame
One the first time slot of subframe.
Optionally, in above-mentioned apparatus, for starting the instruction of transmitting switch amount information are as follows: in first subframe of data frame
The predetermined multiframe alignment code of fixed bit position insertion in first time slot.
Optionally, in above-mentioned apparatus, the transmission mode instruction are as follows: in first subframe of the data frame when system designs
First time slot in determined by the transmission mode indication code that is inserted into fixed bit position, wherein separate time slots mode
Corresponding transmission mode indication code, the corresponding transmission mode indication code of He Gongzhan slotted mode, is inserted into fixed bit position
Fixed value it is different.
Optionally, in above-mentioned apparatus, the switching value information transmission unit is according to the instruction of transmission mode and preset
Switching value information and the time slot/bit corresponding relationship for carrying it, by the data frame of the switching value information including current channel
Transmission network is sent by corresponding time slot allotment to refer to:
When transmission mode is designated as separate time slots mode, it is a multi-frame as switching value information using 4 subframes and transmits
Unit, the switching value information in the channel determined according to current channel in Design of Network System and the time slot/bit for carrying it
The corresponding relationship of position, the sequence of the write instructions channel switch amount information in the fixed bit position in the 2nd, 3,4 subframe time slots
Code, and it is sent to transmission network.
Optionally, in above-mentioned apparatus, the switching value information transmission unit is according to the instruction of transmission mode and preset
Switching value information and the time slot/bit corresponding relationship for carrying it, by the data frame of the switching value information including current channel
Include: by the process that transmission network is sent into corresponding time slot allotment
When transmission mode is designated as accounting for slotted mode altogether, it is a multi-frame as switching value information using 8 subframes and transmits
Unit, the switching value information in the channel determined according to current channel in Design of Network System and the time slot/bit for carrying it
The corresponding relationship of position, in the sequence code of the fixed bit position write instructions of affiliated the first time slot of the subframe channel switch amount information,
And it is sent to transmission network.
The multi-channel switch amount transmission method and device that technical scheme proposes can be realized to collected active
On-off model or passive switch amount signal carry out reliable transmission；Scene is widely used, and is supported point-to-point and point-to-multipoint
Switch acquisition and remote control application.
Detailed description of the invention
Fig. 1 is switch quantity acquisition circuit schematic diagram in the embodiment of the present invention；
Fig. 2 is separate time slots transmission mode schematic diagram in the embodiment of the present invention；
Fig. 3 (a) is the data frame structure schematic diagram that input terminal uses separate time slots transmission mode in the embodiment of the present invention；
Fig. 3 (b) is the data frame structure schematic diagram that output end uses separate time slots transmission mode in the embodiment of the present invention；
Fig. 4 is to account for slot transmission pattern diagram altogether in the embodiment of the present invention；
Fig. 5 (a) is that input terminal uses the data frame structure schematic diagram for accounting for slot transmission mode altogether in the embodiment of the present invention；·
Fig. 5 (b) is that output end uses the data frame structure schematic diagram for accounting for slot transmission mode altogether in the embodiment of the present invention；
Fig. 6 is receiving end operational flowchart in switching value transmission process in the embodiment of the present invention；
Fig. 7 is transmitting terminal operational flowchart in switching value transmission process in the embodiment of the present invention；
Fig. 8 is point-to-point control mode schematic diagram in the embodiment of the present invention；
Fig. 9 is midpoint of the embodiment of the present invention to multiparty control schematic diagram
Figure 10 (a) is a kind of structural schematic diagram of multi-channel switch amount transmitting device in the embodiment of the present invention；
Figure 10 (b) is the structural schematic diagram of another multi-channel switch amount transmitting device in the embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to skill of the present invention
Art scheme is described in further detail.It should be noted that in the absence of conflict, in embodiments herein and embodiment
Feature can arbitrarily be combined with each other.
Currently, switching value is divided into active switch amount signal and passive switch amount signal, active switch amount signal is referred to
"ON" and "off" state are the signals of charged, and the acquisition for this on-off model, switch value input interface is to be not required to
Power supply is provided, is occurred usually in the form of dry contact input interface；Passive switch amount signal refers to "ON" and "Off"
State is the signal without power supply, and the acquisition switch value input interface of this on-off model is needed to provide power supply,
Occur usually in the form of wet contact input interface.It therefore can be by being connect to different switch acquisition modes using different
Mouth contact input form, to realize the flexible conversion to active switch amount signal and passive switch amount signal acquisition.
Based on above-mentioned thought, the present embodiment provides a kind of switch acquisition device, compatible active switch amount signal and nothing
The acquisition of source switch amount signal includes at least switching mode control circuit and switch quantity acquisition circuit, in which:
Switching mode control circuit receives external signal, and determines switching mode according to external signal；
Switch quantity acquisition circuit, when switching mode control unit determines that switching mode is wet contact switching mode, selection
Wet contact switchs transmission channel and acquires on-off model；Determine that switching mode is dry contact switching molding in switching mode control unit
When formula, dry contact switch transmission channel is selected to acquire on-off model.
Below by taking Fig. 1 as an example, illustrate the specific implementation of above-mentioned apparatus, in which: switching mode control circuit includes at least: after
Electric appliance SW, NPN type triode Q1 and the first divider resistance R3 and the second divider resistance R4.Coil one end of relay SW and letter
Number power supply VCC connection, the coil other end of relay SW is connect with the collector of triode Q1, and the contact first of relay SW
Free end is connect with interface power VCC_PORT；The first divider resistance R3 being connected in series and the second divider resistance R4 setting is outside
If between mode control signal MODE_CTL and signal ground, and the series connection point of the first divider resistance R3 and the second divider resistance R4 with
The base stage of triode Q1 connects, the emitter of triode Q1 also be signally connected；
Switch quantity acquisition circuit includes at least: optocoupler U1, the first current-limiting resistance R1 and the second current-limiting resistance R2 and pull-up
Resistance R5, first one end current-limiting resistance R1 are connect with first voltage acquisition input terminal PIN1, the other end and switching mode control electricity
The second of relay SW free terminal contacts connection in road, second one end current-limiting resistance R2 and second voltage acquisition input terminal PIN2 connect
It connects, the other end is connect with input side cathode (light-emitting diode tube cathode) side of optocoupler U1, the input side anode and switch of optocoupler U1
The public terminal contacts connection of relay SW in mode control circuit, the outlet side anode and acquisition output signal AIM_IN of optocoupler U1
Connection, while also being connect by pull-up resistor R5 with external power VDD, connect to the outlet side cathode and external power supply of optocoupler U1
It connects.
In order to be compatible with acquisition active switch amount or passive switch amount, can use has extremely above-mentioned switch acquisition device
The connecting terminal of few 3 external pins, wherein 3 pins are respectively connected to first voltage acquisition input terminal PIN1, second voltage is adopted
With collecting input terminal PIN2 and interface GND_PORT, when acquire active switch amount, using first voltage acquire input terminal PIN1,
Second voltage acquires input terminal PIN2 as signal acquisition input terminal, and due to acquisition is active switch amount, needs the
One voltage acquisition input terminal PIN1 is connected with the anode of external interface, and second voltage acquires the negative of input terminal PIN2 and external interface
Extremely it is connected；And when acquiring passive switch amount, GND_PORT is as switching value with using second voltage acquisition input terminal PIN2, interface
Signal acquisition input terminal, what it is due to acquisition is passive switch amount, so the pin of on-off model acquisition input terminal does not have to distinguish
Polarity；Above two mode is to select for the signal acquisition in same channel existing for one, but if is existed in system more
If a acquisition channel, different channels can freely be configured.Based on the configuration of above-mentioned external pin, above-mentioned switching mode control
The cooperative working process of circuit and switch quantity acquisition circuit processed is as follows:
When acquiring passive switch amount signal, use second voltage acquisition input terminal PIN2, interface GND_PORT as
Switching signal acquires input terminal, controls letter according to the peripheral mode of configuration requirement (wet contact) output supply by external control device
Number MODE_CTL output high level (typically, 3.3V), is divided by the first divider resistance R3 and the second divider resistance R4,
And by dividing point voltage output to triode Q1 base stage, cause triode Q1 saturation conduction, as a result, " signal power source VCC-relay
Current path is formed between the coil of device SW-Q1 collector-Q1 emitter-signal ground ", the coil of relay SW has electric current
It flows through, the public terminal contacts of relay SW is caused to connect with the first free terminal contacts (normally opened contact)；When acquisition passive switch amount
Access is formed when the dry contact closure of signal, forms " free terminal contacts-the SW of the first of interface power VCC_PORT-SW as a result,
Public terminal contacts-optocoupler U1 input side-second voltage acquisition input terminal PIN2-interface GND_PORT " electric current it is logical
Road, the light emitting diode forward conduction inside optocoupler U1 shine, at this time its internal phototriode also will conducting, light as a result,
Light-Emitting Diode conducting inside coupling U1, optocoupler U1 output end exports a low level for external circuit as acquisition letter as a result,
Number AIM_IN；And when acquiring the dry contact disconnection of passive switch amount signal, the electric current of the LEDs ON inside optocoupler U1
Access no longer exists, and optocoupler U1 output end exports a high level by the effect of pull-up resistor R5 and external power VDD as a result,
Signal AIM_IN is used as acquisition signal for external circuit；
When acquiring active switch amount signal, input terminal is acquired using first voltage acquisition input terminal PIN1, second voltage
PIN2 acquires input terminal as switching signal, at this time by external control device according to the outer of configuration requirement (dry contact) output supply
If mode control signal MODE_CTL exports low level (typically, 0V), triode Q1 is not turned on as a result, relay SW's
Coil will not obtain enough electric currents, therefore, the public terminal contacts of relay SW1 and the second free terminal contacts (normally-closed contact)
Connection, when acquiring the wet contact closure of active switch amount signal, at this point, being formed, " first voltage acquires input terminal PIN1-the
The public terminal contacts of the free terminal contacts-SW of the second of one current-limiting resistance R1-SW-optocoupler U1 input side-second voltage acquisition
The current path of input terminal PIN2 ", the light emitting diode forward conduction inside optocoupler U1 shine, at this time its internal photosensitive three pole
Pipe will also be connected, as a result, the Light-Emitting Diode conducting inside optocoupler U1, and optocoupler U1 output end exports a low level letter as a result,
Number AIM_IN is used as acquisition signal for external circuit, and when the wet contact for acquiring active switch amount signal disconnects, cause optocoupler
The current path of LEDs ON inside U1 no longer exists, and optocoupler U1 output end passes through pull-up resistor R5 and outer as a result,
If the effect of power vd D exports a high level signal AIM_IN, it is used as acquisition signal for external circuit.
As it can be seen that it can be real by peripheral mode control signal MODE_CTL using a set of hardware by the above-mentioned course of work
The selection and switching of existing passive switch amount signal acquisition and active switch amount signal acquisition, the detection by optocoupler to acquisition signal
And from on-off model to logically high low level conversion, collection process is simplified, while improving the acquisition of facility switching amount
Interface compatibility in the process effectively meets the needs of different scenes application.
In order to make switch acquisition device proposed in above-described embodiment that there is higher reliability, preferably, in institute
It states in switching mode control circuit, sustained diode 2 can be set between signal power source VCC and the collector of triode Q1,
The cathode of the sustained diode 2 is connect with signal power source VCC；This is because when peripheral mode control signal MODE_CTL output
Level by height switch to it is low after, triode Q1 becomes ending from being saturated, and at this moment the coil of relay SW makes it due to effect of inertia
Middle electric current loses distribution channel suddenly, if without sustained diode 2 biggish inverse electromotive force will be generated at the coil both ends,
Up to tens of volts, this voltage is acted on plus VCC voltage on the collector of triode Q1 to be enough to damage triode voltage value, because
This, the effect of sustained diode 2 is to provide discharge loop for inverse electromotive force.
It can be preferably, the coil other end of relay SW passes through the transmitting of a zener diode D3 and triode Q1
Pole connection, to limit when triode Q1 saturation conduction and shutdown cut-off when transistor emitter and collector between voltage it is big
It is small, guarantee that triode Q1 is hardly damaged.
In addition, in switch quantity acquisition circuit, it is preferable that the input side cathode of second one end current-limiting resistance R2 and optocoupler U1
Hold-off diode D1 can be set between (light-emitting diode tube cathode) side, the cathode and the second current-limiting resistance of hold-off diode D1
The connection of the one end R2, optocoupler damages caused by hold-off diode D1 can be used for preventing from being reversely connected because of interface power.
By above switch acquisition device, we can be acquired the on-off model in channel, wherein institute
The on-off model of acquisition can be active switch amount signal and be also possible to passive switch amount signal, and in data communication network
In signals transmission, the signal differentiated of acquisition will not be transmitted in different ways, therefore, although being adopted in on-off model
It more preferably can be during collection using above-mentioned switch acquisition device and acquire, but below in relation to on-off model transmission
No longer the acquisition mode of signal will be distinguished in description, and be only based on and collected on-off model to describe it
How transmission in network system is carried out.
Before the implementation process for illustrating on-off model transmission, the present invention is discussed in detail first and carries out on-off model biography
Defeated adoptable two kinds of transmission modes the transmission mode of separate time slots mode and account for the transmission mode of slotted mode altogether, and
Corresponding time slot/the bit configuration of both transmission modes:
(1) separate time slots mode
Separate time slots mode refers to that each on-off model occupies an independent time slot respectively and transmitted.
As shown in Fig. 2, the transmission of each way switch amount information independently occupies a time slot under separate time slots mode,
The mode is designed using multi-frame structure, with 4 subframes for a multi-frame, wherein bit0~bit6 of every 1 time slot of the 1st subframe is equal
Multiframe alignment code " 0000000 " (being used to indicate the data frame for starting transmitting switch amount signal) is transmitted for independent,
The fixed transmission transmission mode indication code of bit7 (' 0 ' indicates to account for slotted mode altogether, and ' 1 ' indicates separate time slots mode), the 2nd, 3,4 sons
Total 12 bits of preceding 4 bits (bit0~bit3) of each time slot of frame are respectively intended to transmission and represent each way switch amount letter
The sequence code of breath, the sequential coding can independently be set in advance, but must need to ensure do not occur and the consistent letter of multiframe alignment code
Structure is ceased, such as: it uses " 110110110110 " to indicate ' 1 ', " 101010101010 " is used to indicate ' 0 ', and due to other free time
The Filling power of position does not have special recognition reaction, can fix filling ' 1 ' or ' 0 ' in other spare bits, be also possible to other solid
Fixed combination or random combine.In this way, multi-frame and its subframe, and root can be distinguished according to multiframe alignment code in opposite end receiving side
According to the clear used transmission mode of transmission mode indication code, and then transmitted switching value information can be parsed.In the design
In, sequence code indicates the switching value information in each channel, is total to by the fixed bit position in the identical time slot of subframes different in multi-frame
With composition, hence it is evident that anti-interference, the bit error rate can be effectively reduced, and length can according to need design, but 12 and be distributed in not
It is preferred with the identical time slot of subframe, it is sufficient to guarantee reliable and stable.Certainly, the length setting of sequence code is to guarantee to believe
It ceases the reliability of transmission and adds, length can be set as needed, can also be straight actually in application scenes
Connect and sequence code be simply set to 1, information transmission is carried out with switching value " 0 " or " 1 ", that is, the 2nd, 3,4 subframes each
One " 0 " is only taken up in time slot, or " 1 " shows switch state.
Herein it should also be noted that, can also be based on when carrying out the transmission of switching value information using separate time slots mode
Above-mentioned multi-frame design principle, be set in the 2nd, 3, a certain (or certain) in any time slots of 4 subframes bit transmit out
Pass measure information, without each subframe, there are switching value information, but at this time obviously can transmitting switch amount port number reduce, but
It is by its specific arrangement it is also possible that the safety is improved.
More intuitively illustrate it is shown in Figure 3, under separate time slots mode, 8 way switch amounts need 8 time slots, the 1st~8 tunnel
On-off model successively occupies TS0~TS7 time slot, wherein 3 (a) figures describe the up direction of on-off model transmission, i.e.,
Transmission network will be sent into from the collected on-off state signal of switch value input interface；3 (b) figures describe on-off model
The down direction of transmission, i.e., the digital output modul signal parsed from transmission network are exported for control switch amount signal
Interface.
(2) slotted mode is accounted for altogether
Slotted mode is accounted for altogether, refers to that multiple switch amount signal occupies the same time slot (TS0) jointly and transmitted, and pass through
The form of multi-frame, multi-way switching values signal can carry out bit bit multiplex when transmitting, and for the correctness for guaranteeing transmission signal, may be used also
Joined CRC-16 check code；
As shown in figure 4, accounting under slotted mode altogether, it is only necessary to a time slot (TS0) is used, and for including 32 time slots
(TS0-TS31) for data frame, other time slots in addition to TS0 still can be used for transmitting other information.Transmitting switch amount
Multi-frame structure is used when signal, with 8 subframes for a multi-frame, the fixed transmission multi-frame of bit0-bit6 of the TS0 of the first subframe
Alignment code (" 0000000 "), bit7 are that transmission mode indication code (wherein ' 0 ' is expressed as accounting for slotted mode altogether, ' 1 ' indicates independent
Slotted mode), the 2nd, 3, the TS0 time slots of 4 subframes be used for transmission switching value information, every frame can transmit the switching value in 7 channels
Information, to prevent " 0000000 " the i.e. appearance of multiframe alignment code, the bit6 of every frame fixes insertion data confirmation code ' 1 ', the
5,6,7,8 subframes are used for transmission switching value information and CRC-16 check code, the fixed insertion data confirmation code ' 1 ' of same bit6；Figure
In A~H indicate 8 way switch amount information, " X " be that reserved switching value information transmits position, and preferably in order to realize this hair
Two kinds of bright transmission modes are in master control website access device to the compatibility of access slave station point, and the 2nd subframe in Fig. 4
The bit7 of TS0 time slot is set as idle, fixed insertion such as ' 1 ' so that system compatibility support 32 way switch amounts to believe
(position that shade is identified in figure can transmitting switch amount signal: total 6 (the 2nd subframe)+7*2 (the 3rd, 4 subframes)+3*4 for the transmission of breath
(the 5th, 6,7,8 subframes)=32).It certainly, can also be by changing time slot shared by check code in the case where accounting for slot transmission mode altogether
Digit and spare bits are not set to increase the transmission quantity of switching value, its in non-1st subframe also can be set in spare bits
Its subframe time slot.
It is also required to illustrate herein, it, can also be with when using altogether accounting for slotted mode and carrying out the transmission of switching value information
Based on above-mentioned multi-frame design principle, switching value can select the predetermined other subframes or other that can be used for transmitting when transmitting
Bit, as long as the related setting for accounting for slotted mode transmitting switch amount altogether before meeting, setting herein are intended merely to
Facilitate explanation.
More intuitively illustrate shown in Figure 5, accounts under slotted mode altogether, 8 way switch amounts only need a time slot, preceding 4 tunnel
The transmission of switching value information occupies bit0~bit3 of the 2nd subframe of multi-frame, and the transmission of rear 4 way switch amount information occupies multi-frame the 3rd
Bit0~bit3 of subframe is transmitted.Wherein Fig. 5 (a) figure describes the up direction of on-off model transmission, i.e., will be from
The collected on-off state signal of switch value input interface is sent into transmission network；Fig. 5 (b) figure describes on-off model biography
Defeated down direction, i.e., the digital output modul signal parsed from transmission network connect for the output of control switch amount signal
Mouthful.
For above two mode carry out the transmission of switching value information time slot configured it should be added that, although
It is all multiframe alignment code is set using bit0~bit6 in 1 time slot above, transmission mode indication code is arranged in bit7, but
Be in fact, this is not unique, but because only there are two types of transmission modes for the transmission of switching value information, therefore,
It only needs to can be carried out distinguishing by 1 bit, and multiframe alignment code is arranged using more bit to be guaranteed to know
Bit error probability is reduced under the premise of other property, thus improve data transfer reliability.It, can also be with less in some other occasion
Multiframe alignment code is arranged in bit, can also be arranged transmission mode indication code with more bit, be not construed as limiting, only need herein
The sum of digit shared by two kinds of identification codes of multiframe alignment code and transmission mode indication code is wanted to be not more than 8bit.
Based on the transmission time slot in switching value message transmitting procedure is arranged above, in network system between each website into
Row switching value information transmission, in entire transfers net system, as the previously known each channel switch amount information in receiving end with
Its time slot/bit corresponding relationship is carried, and needs known this channel switch amount information as transmitting terminal and carries its
Time slot/bit corresponding relationship.
For as the received receiving end of signal, data frame is received, if judging the data frame received as switching value
Information then obtains transmission mode from data frame, according still further to acquired transmission mode and preset switching value information with hold
Time slot/bit the corresponding relationship for carrying it obtains switching value information, and the specific location determination where switching value information is opened
Measure the transmission channel and corresponding record of information in pass.Specifically, the receive process are as shown in fig. 6, execute following steps:
Step 601, whether first time slot for judging first subframe of the data frame received includes scheduled multi-frame
Alignment code continues to execute if it is, showing that the data frame to be received is the multi-frame structure for transmitting multi-channel switch amount information
Step 602；Otherwise, show that received data frame is non-agreement multi-channel switch amount information, according to its of Design of Network System
Its rule process, the present invention are not related to；
In this step, identified when scheduled multiframe alignment code designs for system set in fixed bit to consolidate
Definite value (for example, being set as " 0000000 " in bit0-bit6)；
It is done here with special instruction, is to show as connecing in the purpose of receiving end, the setting of multiframe alignment code
Receiving end will start to receive switching value information, as long as therefore a time slot in the data frame that receives includes multiframe alignment code,
Show that the data frame received includes switching value information, and when the time slot is confirmed as the 1st subframe the 1st of the data frame
Gap.
Step 602, according to the transmission mode indication code for including in first time slot of the first of the data frame subframe
The transmission mode for determining received switching value information executes step 603, works as judgement when being judged as separate time slots transmission
When to account for slot transmission altogether, step 604 is executed；
In this step, identified set fixation in fixed bit when transmission mode indication code designs for system
Value, accounts for slotted mode for separate time slots mode and altogether, and the fixed value is different (for example, expression accounts for altogether when being set as 0 in bit7
Slotted mode is set as indicating separate time slots mode when 1)；
Step 603, the unit read using 4 subframes for a multi-frame as switching value information, from the 2nd, 3,4 subframe
Identical time slot in fixed bit position in obtain the sequence code of instruction switching value information, according to specific location where the sequence code
It is determined as the switching value information transmitted in which channel and corresponding record；For example, before in the TS0 time slot of the 2nd, 3,4 subframe
Sequence code of the 4bit data together as instruction first passage switching value information, preceding 4bit in the TS1 time slot of the 2nd, 3,4 subframe
Sequence code ... ... of the data together as instruction second channel switching value information；
Step 604, be a unit that a multi-frame is read as switching value information using 8 subframes, from the 2nd, 3,
4 ... respectively setting is used for transmission acquisition switching value information in the bit of switching value information in the TS0 time slot of subframe, according to this
Specific location where switching value information is determined as the switching value information transmitted in which channel and corresponding record；For example, the 2nd subframe
TS0 time slot in bit0-bit5 be first passage switching value information-the 6th channel switch amount information, bit7 is the 7th logical
Road switching value information, bit0-bit5 in the TS0 time slot of the 3rd subframe are that the 8th channel switch amount triple channel of information-the tenth is opened
Measure information ... ... in pass.
Accordingly, for the transmitting terminal sent as signal, this channel is collected using on-off model acquisition device
After switching value information, the data frame comprising switching value information is sent, is believed for example, existing in network system for multi-channel switch amount
When the data frame of the transmission of breath, according to the transmission mode indicated in this data frame, when the switching value information of current channel is passed through
Transmission network is sent into gap allotment；In network system there is no for multi-channel switch amount information transmission data frame when, then to
In the data frame of transmission, insertion is used for transmission the instruction of switching value information and the instruction of transmission mode, according to the transmission of insertion
The instruction of mode and preset switching value information and the time slot/bit corresponding relationship for carrying it, by opening for current channel
It measures information and feeding transmission network is deployed by time slot in pass.Specifically, this process is as shown in fig. 7, comprises following steps:
Step 701, judge the transmitting data frame for multi-channel switch amount information whether is had existed in network system, such as
Fruit exists, and thens follow the steps 703, if it does not exist, then executing step 702；
In this step, existing in network system for the transmitting data frame of multi-channel switch amount information is connect by judgement
It receives in data frame and whether to include scheduled multiframe alignment code to determine；When not receiving including scheduled multiframe alignment code
When data frame, show that there is no the transmitting data frames for multi-channel switch amount information in current network systems；
Step 702, according to system configuration requirements, consolidating in first time slot of first subframe of data frame to be sent
Determine bit and is inserted into scheduled multiframe alignment code and transmission mode indication code；Wherein, the multiframe alignment code shows to make at this moment
To start to send the data frame including switching value information for transmitting terminal；The transmission mode indication code is directed to and accounts for slotted mode altogether
It is set separately with separate time slots mode；Then step 703 is executed；
Step 703, according to transmission mode indicated by transmission mode indication code, the switching value information of current channel is passed through
Transmission network is sent into time slot allotment；It is specific:
It is a multi-frame as opening using 4 subframes when the transmission mode indication code is designated as separate time slots mode
Information transmission unit is measured in pass, should be in 2,3,4 subframe according to the channel that current channel is determined in Design of Network System
The sequence code of the write instructions channel switch amount information in fixed bit position in gap, and it is sent to transmission network；
It is a multi-frame as opening using 8 subframes when the transmission mode indication code is designated as accounting for slotted mode altogether
Information transmission unit is measured in pass, should be in affiliated subframe the first according to the channel that current channel is determined in Design of Network System
The sequence code of the determination bit write instructions of the gap channel switch amount information, and it is sent to transmission network.
It should be noted that being accounted under time slot and separate time slots mode altogether in the present embodiment, multi-channel switch can be transmitted
Measure information, typically 32 tunnels.Due to accounting under slotted mode altogether, 8 way switch amount signals occupy the same time slot, occupy resource
It is few, and under separate time slots mode, since every way switch amount signal individually occupies 1 separate time slots, time slot allotment is more flexible, because
This, two kinds of switching value transmission modes can flexibly be selected in different networking application occasions, but for whole network system and
Speech can at least accomplish choosing of the same hardware system for two kinds of transmission modes using design proposed in the embodiment of the present invention
With compatible and automatic identification.In addition, the compatibility of switching value Transmission system is embodied in master control website for controlled in the application
Website acquires the compatibility of switching value number, and for main Control point access device, node controlled for two kinds be may be implemented
The access of quantity is provided in Transmission system as a result, and both ends be not necessarily to when configuration change, especially transmission mode are changed
Master control website access device is modified.It can be seen that enabling to entire switching value to pass using technical scheme
Defeated system compatibility on the basis of realizing reliable data transmission further enhances.
Concrete application example
Point-to-point application.
Under point-to-point application model, as shown in figure 8, the On-off signal signal that prosecution website A will test, passes through E1
Transmission network is sent to B end equipment, while the digital output modul signal resolution from B website being come out, for controlling local terminal quilt
Control equipment is shown as warning information by display screen；In the same way, the switching value shape that prosecution website B will test
State signal is transmitted to A end equipment also by E1 transmission network, while the digital output modul signal resolution from A website being come out,
For controlling local terminal controlled device or being shown as warning information by display screen.The transmission mode of this application mode lower switch amount
It can be used and account for slotted mode altogether, separate time slots mode also can be used.
Point-to-multipoint application.
As shown in figure 9, having a control site Cotrol Site and 3 controlled website Site A, Site in loop network
B and Site C under separate time slots mode then may be implemented that the control respectively to 3 controlled websites of A, B, C is implemented separately.
Control Site accesses double switch amount control signal (dotted line), occupies 2 TS time slots by time slot allotment and is sent into transmission network
Control signal is sent to Site A by network, and the available information of Site A simultaneously can according to need letter on its display screen
Breath carries out display or the open and close for controlling Site A relevant device.Equally, Control Site can also pass through
The switch control to such as the Site B, Site C of other websites in ring network is realized in the allotment of time slot, to realize switching value
Point-to-multipoint control.In this scenario, after the time slot for determining transmitting switch amount information and other relevant informations determines, if adjusted
Any technical solution of realization information insertion time slot in this field can be selected by carrying out information insertion with time slot, not limited herein
It is fixed.
In the following, the present embodiment provides a kind of multi-channel switch amount transmitting devices, as shown in Figure 10 (a), it can be placed in and connect
Receiving end side mainly includes following each unit:
Judging unit is received, data frame is received, and judges whether the data frame received is switching value information, and sentencing
When the data frame that disconnecting receives is switching value information, transmission mode is obtained from data frame, wherein acquired transmission mode is
Separate time slots mode accounts for slotted mode altogether；
Specifically, when first time slot of first subframe of the data frame received includes scheduled multiframe alignment code,
When i.e. system designs when identified fixed value set in fixed bit position, receiving judging unit can determine whether to receive
Data frame be switching value information.Wherein, identified when system designs in fixed bit position may include one or more ratios
Special position.
In addition, judging unit is received, according to the transmission mode for including in first time slot of the first of data frame subframe
Indication code obtains the transmission mode of switching value information.Specifically, when transmission mode indication code designs for system it is identified
Set fixed value in fixed bit position accounts for slotted mode, fixed value difference for separate time slots mode and altogether.For example,
The corresponding transmission mode indication code of separate time slots mode is that the value of the fixed bit position of systemic presupposition is fixed value 1, then accounts for altogether
The corresponding defeated mode indication code of slotted mode is that the value of the fixed bit position of systemic presupposition is fixed value 2.
Switching value information acquisition unit according to acquired transmission mode and preset switching value information and carries it
Time slot/bit corresponding relationship obtain switching value information, the specific location where switching value information determines switching value
The transmission channel and corresponding record of information.
Wherein, when transmission mode is separate time slots mode, switching value information acquisition unit, according to determining transmission mould
When formula, preset switching value information and the time slot/bit corresponding relationship for carrying it obtain switching value information, be from the 2nd, 3,
Setting is used for transmission acquisition switching value information in the bit of switching value information in the identical time slot of 4 subframes.Preferably, it can incite somebody to action
2nd, 3, preceding 4 bits of each time slot of 4 subframes be set for the bit of transmitting switch amount information.
When transmission mode is to account for slotted mode altogether, the switching value information acquisition unit can be from the of 2-8 subframe
Setting is used for transmission acquisition switching value information in the bit of switching value information in one time slot.
The present embodiment introduces a kind of multi-channel switch amount transmitting device again, as shown in Figure 10 (b), can be placed in transmitting terminal
Side mainly includes following each unit.
Indicate information insertion unit, there is no the data frames for the transmission of multi-channel switch amount information in network system
When, in data note to be sent, insertion notebook data frame is used to start the instruction and transmission mode of transmitting switch amount information
Instruction；
In the present embodiment, fixed bit position insertion of the unit in first time slot of first subframe of data frame is pre-
Fixed multiframe alignment code, this scheduled multiframe alignment code are the instruction for being used to start transmitting switch amount information.It is connect at this point, being placed in
The device of receiving end when reading multiframe alignment code from data frame, that is, can determine whether that this data frame is to be used for transmission switching value information
's.Wherein, the fixed bit position for being inserted into multiframe alignment code may include one or more bits.
In addition, instruction information transmission unit, it can also be by solid in first time slot of first subframe in data frame
Determine bit insertion transmission mode indication code, the as instruction of transmission mode, wherein the corresponding transmission mode of different transmission mode
The value of indication code is different.
Switching value information transmission unit, the transmission mode and preset switch that information insertion unit is inserted into as indicated
Time slot/bit the corresponding relationship for measuring the corresponding carrying switching value information of information, by the switching value information including current channel
Data frame pass through corresponding time slot allotment and be sent into transmission network；And according to for starting transmitting switch amount letter in network system
When indicating that judgement has the data frame for the transmission of multi-channel switch amount information of breath, according to the transmission mode of data frame use
Instruction and preset switching value information and carry its time slot/bit corresponding relationship, will include opening for current channel
The data frame that information is measured in pass is deployed by time slot is sent into transmission network.
Specifically, when transmission mode is separate time slots mode, the transmission of the switching value information of each paths can divide
It is independent to occupy a time slot, such as by taking 4 subframes are a multi-frame as an example, at this point, switching value information transmission unit can be the
2, setting is used for transmission transmission switching value information on the bit of switching value information in the identical time slot of 3,4 subframes.For example,
2, in preceding 4 bits of each time slot of 3,4 subframes the write instructions channel switch amount information sequence code, and be sent to
Transmission network.
When transmission mode is to account for slotted mode altogether, the on-off model of each paths can carry out bit when transmitting multiple
With, for the correctness for guaranteeing transmission signal, CRC-16 check code can also be joined, such as by taking 8 subframes are a multi-frame as an example,
At this point, switching value information transmission unit then can be in fixed bit position write instructions channel of the first time slot of 2-8 subframe
The sequence code of switching value information, and it is sent to transmission network.
Switching value transmission is applicable to based on TDM communication network in technical scheme, and occupied bandwidth is few.Pass through clock synchronization
Point-to-point switching value, transmission and control can not only may be implemented with flexible networking application in the allotment of gap, can also meet
Detection, transmission and the demand for control of on-off model point-to-multipoint, circuit design is simple, convenience flexible in application.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be instructed by program
Related hardware is completed, and described program can store in computer readable storage medium, such as read-only memory, disk or CD
Deng.Optionally, one or more integrated circuits can be used also to realize in all or part of the steps of above-described embodiment.Accordingly
Ground, each module/unit in above-described embodiment can take the form of hardware realization, can also use the shape of software function module
Formula is realized.The application is not limited to the combination of the hardware and software of any particular form.
The above, preferred embodiments only of the invention, is not intended to limit the scope of the present invention.It is all this
Within the spirit and principle of invention, any modification, equivalent substitution, improvement and etc. done should be included in protection model of the invention
Within enclosing.
Claims (26)
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| US7243367B2 (en) * | 2002-01-31 | 2007-07-10 | Brocade Communications Systems, Inc. | Method and apparatus for starting up a network or fabric |
| CN101043282A (en) * | 2006-03-24 | 2007-09-26 | 中兴通讯股份有限公司 | Data storage means for multi-channel voice process |
| CN201018521Y (en) * | 2007-03-09 | 2008-02-06 | 杭州中导科技开发有限公司 | Environmental monitoring device |
| CN102394719A (en) * | 2011-09-21 | 2012-03-28 | 浙江铭道通信技术有限公司 | Multichannel HDLC data processing method based on FPGA |
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|---|---|---|---|---|
| US7243367B2 (en) * | 2002-01-31 | 2007-07-10 | Brocade Communications Systems, Inc. | Method and apparatus for starting up a network or fabric |
| CN101043282A (en) * | 2006-03-24 | 2007-09-26 | 中兴通讯股份有限公司 | Data storage means for multi-channel voice process |
| CN201018521Y (en) * | 2007-03-09 | 2008-02-06 | 杭州中导科技开发有限公司 | Environmental monitoring device |
| CN102394719A (en) * | 2011-09-21 | 2012-03-28 | 浙江铭道通信技术有限公司 | Multichannel HDLC data processing method based on FPGA |
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