CN203522733U - Card redundant signal transmission device - Google Patents
Card redundant signal transmission device Download PDFInfo
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- CN203522733U CN203522733U CN201320615751.5U CN201320615751U CN203522733U CN 203522733 U CN203522733 U CN 203522733U CN 201320615751 U CN201320615751 U CN 201320615751U CN 203522733 U CN203522733 U CN 203522733U
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Abstract
The utility model relates to a card redundant signal transmission device, especially to a card redundant signal transmission device applied in a discrete distributed control system. The card redundant signal transmission device can receive and transmit signals of a controller and comprises a terminal board capable of receiving and transmitting signals, at least a pair of a first card and a second card which are respectively provided with a signal input end and a plurality of output ends connected with the terminal board, and at least a switching device for switching signals, wherein the switching device is arranged between the first card and the second card for switching of power signals. According to the card redundant signal transmission device, only a switching device is arranged between each pair of first and second cards and the controller. Thus, superabundant switching devices are prevented from being arranged on the plurality of output ends of the first and second cards; switching process is simplified; cost is reduced; and PCB space is also saved.
Description
Technical field
The utility model relates to a kind of fastener redundant signals transmitting device for discrete dcs.
Background technology
At present, discrete dcs claims again DCS system, be one by process control and process monitoring level, formed take the multi-level computer system that communication network is button band, combine the 4C technology such as computer, communication, demonstration and control, be widely used in automation control area.The design of DCS system adopts suitable redundant configuration and diagnoses the self-diagnostic function to module-grade, has good reliability, and intrasystem arbitrary assembly breaks down, and all can not affect the work of whole system.
Fastener redundant signals transmitting device is extensively distributed in as hardware module in the data communication system of DCS system, for sending field control signal or collection site measuring-signal.As Fig. 1, general fastener redundant signals transmitting device 1 comprises having multichannel the first fastener 11 and the second fastener 12, can carry out system redundancy control.The output of the first fastener 11 is corresponding one by one with each output of the second fastener 12 respectively, and between passage in correspondence with each other, be provided with a switch 13, for redundancy, switch, for the fastener redundant signals transmitting device with 32 passages, this realizes redundancy between the first fastener and the second fastener by 32 switches of needs and switches, and more switch will take PCB(printed circuit board (PCB)) large quantity space, simultaneously, cost is higher, and reliability is lower.
Therefore, need to improve existing fastener redundant signals transmitting device, when reducing costs, improve the reliability of fastener redundant signals transmitting device.
Utility model content
For addressing the above problem, the utility model provides a kind of fastener redundant signals transmitting device, receives the also signal of transmission control unit (TCU), comprising:
Can receive the also terminal board of signal transmission;
The first fastener of at least one pair of and the second fastener, described the first fastener and the second fastener have respectively the output that signal input part and a plurality of and described terminal board are connected;
At least one is for the switching device shifter of switching signal, and described switching device shifter carries out the switching of power supply signal between described the first fastener and described the second fastener.
Described in each of above-mentioned fastener redundant signals transmitting device, switching device shifter comprises,
The first switch being connected with the input of described the first fastener,
The second switch being connected with the input of described the second fastener,
Described controller is controlled the power supply signal that described the first switch and described second switch transmit respectively different magnitudes of voltage.
The described controller of above-mentioned fastener redundant signals transmitting device can be controlled described switching device shifter and at the first fastener or the second fastener, export the power supply signal of different voltages, and by described fastener redundant signals transmitting device, one of them power supply signal is transferred to field apparatus.
The described fastener redundant signals transmitting device of above-mentioned fastener redundant signals transmitting device also comprises the 3rd fastener, and described switching device shifter can be at described the first fastener, switches the power supply signal of different voltages in the second fastener and the 3rd fastener.
Above-mentioned fastener redundant signals transmitting device also comprises pressurizer.
The described switching device shifter of above-mentioned fastener redundant signals transmitting device is relay.
The described switching device shifter of above-mentioned fastener redundant signals transmitting device is the relay of dpdt relay or twin coil.
The described switching device shifter of above-mentioned fastener redundant signals transmitting device is transistor.
Fastener redundant signals transmitting device of the present utility model can only arrange one for the switching device shifter of Switching power signal on every pair of first fastener and the second fastener, avoid, on the signal output channels of the first fastener and the second fastener, too much switching device shifter is set, simplified the process that signal switches, save the space of printed circuit board (PCB), effectively reduced cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of redundancy fastener signal transmitting apparatus in prior art;
Fig. 2 is the schematic diagram of the redundancy fastener signal transmitting apparatus of the utility model embodiment mono-;
Fig. 3 is the schematic diagram of the redundancy fastener signal transmitting apparatus of the utility model embodiment bis-;
Fig. 4 is the schematic diagram of the redundancy fastener signal transmitting apparatus of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the technical solution of the utility model is described further.Description related to the preferred embodiment is only exemplary below, and is never the restriction to the utility model and application or usage.
The fastener redundant signals transmitting device that the utility model provides is applied in discrete dcs, and in general, discrete dcs comprises work station, controller, signal transmitting apparatus, and field apparatus, described work station is connected with controller by switch.
Described fastener redundant signals transmitting device of the present utility model comprises, at least one pair of first fastener and the second fastener, and between the first fastener and the second fastener at least one switching device shifter of Switching power signal.Described controller sends the discrete described fastener redundant signals transmitting device that outputs signal to, switching device shifter in described fastener redundant signals transmitting device switches different power supply signals between the first fastener and the second fastener, and the terminal board that one of them power supply signal is connected by the output with described the first fastener or the second fastener transfers to field apparatus, described field apparatus can be the equipment such as transducer, signal driver, current-to-voltage convertor or valve.
In general, described fastener redundant signals transmitting device is connected by bus with controller, can receive the discrete output signal that controller sends, described switching device shifter switches different supply voltages between described the first fastener or the second fastener, simultaneously, described the first fastener and the second fastener carry out self check, and self check information is fed back to controller, on the other hand, described controller can send switching signal to described switching device shifter according to concrete feedback information, described switching device shifter can determine power supply signal correspondingly to pass to the first fastener or the second fastener, and further one of them power supply signal is transferred to field apparatus.
Embodiment mono-
Fig. 2 is the schematic diagram of a kind of fastener redundant signals transmitting device of the utility model embodiment, described the first fastener 21 and the second fastener 22 comprise respectively input and a plurality of output, between the input of described the first fastener 21 and described the second fastener 22 and described controller 20, be provided with switching device shifter 23, described switching device shifter 23 can switch the power supply signal of different voltages between the first fastener 21 and the second fastener 22.
Particularly, described switching device shifter is changeable+24V and+supply voltage of 3.3V, the supply voltage of wherein+24V also can be realized the self check of fastener for exporting to field apparatus simultaneously, the supply voltage of+3.3V is for the self check of fastener.It should be understood that; supply voltage in arbitrary embodiment of the present utility model+24V and+magnitude of voltage of 3.3V is only exemplary, the switching device shifter in the fastener redundant signals transmitting device that the utility model is protected also can switch between the supply voltage of other different numerical value.
Described the first fastener 21 and the second fastener 22 can receive discrete output signal " 1 " that controller 20 sends or " 0 " and be used for out-put supply signal, when the first fastener 21 is during by be switched to+24V of described switching device shifter, the first fastener 21 is main card, when the first be switched to+3.3V of fastener 21, the first fastener 21 is vice card.
When the first be switched to+24V of fastener 21, described the first fastener 21 is main card, and described the second fastener 22 is vice card, when the discrete output signal of controller transmission is " 1 ", the supply voltage of described the first fastener 21 output+24V, and this supply voltage is transferred to field apparatus by terminal board; Meanwhile, the supply voltage of described the second fastener 22 output+3.3V.
At the same time, described the first fastener 21 also can carry out self check, and self check information is fed back to described controller 20.Correspondingly, export+3.3V power supply signal of described the second fastener 22 is used for self check, and self check information is fed back to controller 20.Further, fastener redundant signals transmitting device of the present utility model also comprises low pressure difference linear voltage regulator, for vice card, carries out self check.
The self check information that feeds back to controller 20 when described the first fastener 21 shows that the first fastener breaks down, cisco unity malfunction, the self check information of described the second fastener 22 shows normal simultaneously, so described controller 20 sends switching signal to switching device shifter 23, the power supply signal of described switching device shifter 23 switching+24V is given described the second fastener 22, now, described the second fastener 22 is main card, and described the first fastener 21 is vice card.When receiving discrete output signal that controller 20 sends for " 1 ", the power supply signal of described the second fastener 22 output+24V, and this power supply signal is passed to field apparatus 25 by terminal board 24; Meanwhile, the supply voltage of described the first fastener 21 output+3.3V, only carries out self check.Same, described the second fastener 22 also carries out self check, and described the first fastener 21 and the second fastener 22 all feed back to controller 20 by its self check information.
Particularly, each output of described the first fastener 21 is corresponding one by one with each output of described the second fastener 22 respectively, and each output of described the first fastener 21 and described the second fastener 22 is passed to the power supply signal of+24V on field apparatus 25 by terminal board 24.
When described controller 20 sends discrete output signals " 0 ", now, described the first fastener and the second fastener be output supply voltage not all.
As shown in Figure 2, described switching device shifter 23 can be a kind of switch with two latch coils of dpdt double-pole double-throw (DPDT), concrete, and its switching function can be realized by relay.In like manner, in some high frequency input and output occasions, when the quick break-make of needs, described switching device shifter can also be the transistors such as metal oxide semiconductor field effect tube, triode.
Embodiment bis-
Fig. 3 is the schematic diagram of the another kind of fastener redundant signals transmitting device of the utility model embodiment, described switching device shifter comprises the first switch 331 and second switch 332, described the first switch 331 is located on described the first fastener 31, described second switch 332 is located on described the second fastener 32, and described the first fastener 31 and described the second fastener 32 interconnect.
The same with above-described embodiment, described switching device shifter can switch the power supply signal of different voltages between the first fastener 31 and the second fastener 32, can make the supply voltage of an output+24V in described the first fastener 31 and the second fastener 32, the supply voltage of another output+3.3V.
Particularly, when the first switch 331, give described the first fastener 31 and switch the supply voltage of output+24V, the discrete output signal sending when controller 30 is so " 1 ", described the first fastener is main card, the supply voltage of output+24V is to field apparatus, and described second switch 332 switches the supply voltage of output+3.3V to described the second fastener 32, and described the second fastener 32 is vice card, only carry out self check, and to controller 30 feedback self check information.
The self check information of the arbitrary fastener in the first fastener and the second fastener shows fault, described controller 30 sends switching signal to described switching device shifter, being described the first switch or second switch switches to the power supply signal of+24V on another fastener not breaking down, and to field apparatus, provide power supply by this fastener, to maintain the normal operation of system.
The same with above-described embodiment, described switching device shifter can be a kind of relay with twin coil of dpdt double-pole double-throw (DPDT), can be also the transistors such as metal oxide semiconductor field effect tube, triode.
The same with above-described embodiment, described switching device shifter also can comprise pressurizer, for vice card, carries out self check.
In above-mentioned arbitrary embodiment; described fastener redundant signals transmitting device all has first fastener and second fastener of at least one composition to application; but it should be understood that triplex level redundancy fastener and triple above redundancy fastener are also within the scope of the utility model protection.Further, described fastener redundant signals transmitting device also can comprise the 3rd fastener, and described switching device shifter can be at described the first fastener, Switching power signal and discrete output signal in the second fastener or the 3rd fastener.
Further, described fastener redundant signals transmitting device also can be provided with many groups and has triple or triple above redundancy fasteners.
Further, when described the first switch and second switch are relay, on described the first fastener and the second fastener, can be provided with respectively two switches, can improve electric capacity flow.Fig. 4 shows commutation circuit of the present utility model, and output circuit and self-checking circuit, for convenience of understanding, only show the first fastener in the drawings, and the second fastener is consistent with described the first fastener.Below in conjunction with Fig. 4, set forth the principle of fastener redundant signals transmitting device of the present utility model.
As shown in Figure 4, when the first fastener receives the ACQUIRE signal that controller sends, relay K 1 is by set, and+24V_selftest will be connected to GNDA, and+24V/3V3 is by connection+24V.Now the first fastener is set as main card.When the first fastener receives controller, send discrete signal DISCRETE_OUT when " 1 ", P channel mosfet Q1 is by conducting, and CHANNEL signal will be by provide to scene+24V of terminal board power supply.While N-channel MOS FET Q2, Q3 cut-off, on-the-spot read back waveform READ_BACK will return to " 0 " to controller.When the first fastener receives controller, send discrete signal DISCRETE_OUT when " 0 ", all MOSFET will end, CHANNEL signal no-output, and on-the-spot read back waveform READ_BACK will return to " 1 " to controller.
When main card is when the first fastener breaks down, controller judges that according to the feedback signal of main card it breaks down, and will send ACQUIRE signal to vice card, and the relay K 1 in vice card is by set, + 24V/3V3 is by connection+24V, and+24V_selftest will be connected to GNDA.Now vice card can send DE_ACQUIRE signal to main card, and the relay K 1 on main card will reset, and+24V_selftest will be connected to GNDA, and+24V/3V3 is by connection+3V3.Main card switches to vice card, and vice card switches to main card, completes once and switches.
When vice card receives controller, send discrete signal DISCRETE_OUT when " 1 ", P channel mosfet Q1 is conducting, CHANNEL signal output+3.3V power supply.While N-channel MOS FET Q2, Q3 conducting, on-the-spot read back waveform READ_BACK will return to " 0 " to controller.When fastener receives controller, send discrete signal DISCRETE_OUT when " 0 ", P channel mosfet Q1 will end, CHANNEL signal no-output, and on-the-spot read back waveform READ_BACK will return to " 1 " to controller.
Provide exemplary embodiment so that the disclosure is more complete, and pass on its protection range to those skilled in the art comprehensively.Set forth many details, such as the example of specific features, apparatus and method, so that the understanding to comprehensive embodiment of the present disclosure to be provided.For a person skilled in the art clearly, needn't give particulars, exemplary embodiment can much multi-form enforcement, and should not be interpreted as limiting the scope of the present disclosure.In some exemplary embodiment, well-known process, well-known apparatus structure and well-known technology do not elaborate.
Although can use term first, second, third, etc. etc. to describe various elements, parts or part at this, these elements, parts or part should not limited by these terms; These terms can be only for distinguishing element, parts or a part.When this uses term as " first ", " second " and other numerical value terms, it does not comprise order or order, unless explicitly pointed out in context.Therefore,, in the situation that do not depart from the explanation of exemplary embodiment, the following stated the first element, parts, part can be interpreted as term the first element, parts, part.
Although described various execution mode of the present utility model in detail at this, but should be appreciated that the utility model is not limited to the embodiment of describing in detail and illustrating here, in the situation that not departing from essence of the present utility model and scope, can be realized by those skilled in the art other modification and variant.All these modification and variant all fall in scope of the present utility model.And all members described here can be replaced by the member being equal in other technologies.
Claims (8)
1. fastener redundant signals transmitting device, receives the also signal of transmission control unit (TCU), it is characterized in that, comprising:
Can receive the also terminal board of signal transmission;
The first fastener of at least one pair of and the second fastener, described the first fastener and the second fastener have respectively the output that signal input part and a plurality of and described terminal board are connected;
At least one is for the switching device shifter of switching signal, and described switching device shifter carries out the switching of power supply signal between described the first fastener and described the second fastener.
2. fastener redundant signals transmitting device according to claim 1, is characterized in that, described in each, switching device shifter comprises,
The first switch being connected with the input of described the first fastener,
The second switch being connected with the input of described the second fastener,
Described controller is controlled the power supply signal that described the first switch and described second switch transmit respectively different magnitudes of voltage.
3. fastener redundant signals transmitting device according to claim 2, it is characterized in that, described controller can be controlled described switching device shifter and at the first fastener or the second fastener, export the power supply signal of different voltages, and by described fastener redundant signals transmitting device, one of them power supply signal is transferred to field apparatus.
4. fastener redundant signals transmitting device according to claim 2, it is characterized in that, described fastener redundant signals transmitting device also comprises the 3rd fastener, and described switching device shifter can be at described the first fastener, switches the power supply signal of different voltages in the second fastener and the 3rd fastener.
5. fastener redundant signals transmitting device according to claim 1, is characterized in that, described fastener redundant signals transmitting device also comprises pressurizer.
6. according to the arbitrary described fastener redundant signals transmitting device of claim 1 to 5, it is characterized in that, described switching device shifter is relay.
7. fastener redundant signals transmitting device according to claim 6, is characterized in that, described switching device shifter is the relay of dpdt relay or twin coil.
8. according to the arbitrary described fastener redundant signals transmitting device of claim 1 to 5, it is characterized in that, described switching device shifter is transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320615751.5U CN203522733U (en) | 2013-09-30 | 2013-09-30 | Card redundant signal transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320615751.5U CN203522733U (en) | 2013-09-30 | 2013-09-30 | Card redundant signal transmission device |
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| Publication Number | Publication Date |
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| CN203522733U true CN203522733U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320615751.5U Expired - Lifetime CN203522733U (en) | 2013-09-30 | 2013-09-30 | Card redundant signal transmission device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967588A (en) * | 2019-12-26 | 2020-04-07 | 浙江中控技术股份有限公司 | Card testing system and method |
| CN112506037A (en) * | 2020-12-14 | 2021-03-16 | 杭州和利时自动化有限公司 | Redundancy system based on heterogeneous diversity |
-
2013
- 2013-09-30 CN CN201320615751.5U patent/CN203522733U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967588A (en) * | 2019-12-26 | 2020-04-07 | 浙江中控技术股份有限公司 | Card testing system and method |
| CN112506037A (en) * | 2020-12-14 | 2021-03-16 | 杭州和利时自动化有限公司 | Redundancy system based on heterogeneous diversity |
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