CN208999785U - Safe adapter and tandem type safe control loop - Google Patents
Safe adapter and tandem type safe control loop Download PDFInfo
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- CN208999785U CN208999785U CN201821351053.8U CN201821351053U CN208999785U CN 208999785 U CN208999785 U CN 208999785U CN 201821351053 U CN201821351053 U CN 201821351053U CN 208999785 U CN208999785 U CN 208999785U
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Abstract
The utility model proposes a kind of safe adapter and tandem type safe control loops, tandem type safe control loop includes safety control module, secure data line and safe adapter group, and safety control module connects to form closed circuit by secure data line with safe adapter group.Safety control module issues dynamic chek signal, safe adapter group is transferred to via secure data line, if the working condition of safe adapter group is normal, phasing back then is carried out to dynamic chek signal, generate dynamical feedback signal, it is transmitted back to safety control module, safety control module is to dynamic chek signal and dynamical feedback signal is compared and time-delay calculation, if practical time delay is consistent with default time delay, and comparison result is consistent with default result, then shows that the equipment in tandem type dynamic safety control circuit can work normally.The safe control loop structure is simple, using Dynamic Signal self-test, participates in without artificial, it will be able to reach the safe energy level of highest.
Description
Technical field
The utility model relates to arrive security control field, especially relates to a kind of safe adapter and tandem type is controlled safely
Circuit processed.
Background technique
In recent years, the proposition of intelligence manufacture strategy is higher and higher to the automatization level demand of equipment, and robot
Using gradually strengthening this trend.Machine security, man-machine collaboration etc. are increasingly taken seriously.Traditional machine security control
System receives the signal of safety sensor feedback using control elements such as safety relay or safety PLCs, and further to equipment
Stopping make different responses, to avoid the generation of hazard event.But in traditional safety return circuit, safety relay
It is to use point-to-point control mode, and require personnel periodically to carry out detection to input device and can be only achieved more with safety PLC
High security level, i.e. a safety relay can only connect a security input device, and a safety PLC can be according to input terminal
Mouthful quantity number, and connect the security input device of respective numbers.And as the degree of automation and security level of equipment are wanted
The quantity of the raising asked, the quantity of security input device and the safety relay of control or safety PLC must also increase, and
Security input device on safety return circuit needs personnel's detection to can be only achieved the requirement of security level, cause in this way safety cost and
Human cost increases severely.In addition the scalability of security system is generated and is greatly restricted.For example, certain production line needs 9 groups of peaces
Full input, such as uses existing safety return circuit control mode, then needs the safety of 9 safety relays or at least 18 safe input points
PLC, and need to be given according to the function difference of security input device, the safety relay or safety PLC for configuring different function
Response, causes the waste of resource and cost.For disadvantage mentioned above, the utility model proposes a kind of tandem type security controls to return
Road.
Summary of the invention
The main purpose of the utility model is to provide a kind of safe adapter and tandem type dynamic safety control circuit, is used
Dynamic Signal carries out self-test, participates in without artificial, equipment can reach highest security level.
The utility model proposes a kind of safe adapter, including safety detector and safety equipment, safety detector with
Safety equipment circuit connection, and interface channel is one or more, safety detector, which sends pulse detection by interface channel, to be believed
Number give safety equipment, safety equipment according to pulse detection signals return pulse feedback signal to safety detector, safety detector
Safety signal is obtained according to pulse feedback signal.
The utility model also proposed a kind of tandem type dynamic safety control circuit, including safety control module, safe number
According to line and safe adapter group, safe adapter group includes one or more above-mentioned safe adapter, safety control module with
Safe adapter group is connected into a closed circuit by secure data line circuit connection；Safety control module is for issuing
Dynamic chek signal gives safe adapter group, and safe adapter group is used to receive dynamic chek signal, and after combination safety signal
Dynamical feedback signal is issued to safety control module；The quantity of secure data line is one or more, when the number of secure data line
When amount is a plurality of, safety control module is separately connected with safe adapter group by a plurality of secure data line, the safe number of each
A series connection closed circuit is constituted according to line, is not interfere with each other mutually between closed circuit of connecting.
Further, when the quantity of safe adapter is one, referred to as the first safe adapter, the first safety adaptation
Device includes the first safety equipment and the first safety detector, and safety control module sends dynamic chek signal and is adapted to the first safety
Device, the first safe adapter receive dynamic chek signal, and issue after the safety signal for combining the first safety detector to issue dynamic
State feedback signal is to safety control module；When the quantity of safe adapter is multiple, multiple safe adapters are connected in series,
The safe adapter that dynamical feedback signal is transmitted directly to safety control module is referred to as final safe adapter；Security control mould
Block sends dynamic chek signal to the first safe adapter, and the first safe adapter receives dynamic chek signal, and combines first
Dynamical feedback signal is issued after the safety signal that safety detector issues to concatenated next safe adapter, signal transmitting side
Formula and so on receives the dynamical feedback signal that previous safe adapter issues by the latter safe adapter, and combines certainly
Dynamical feedback signal is issued after the safety signal that body issues, after the safety signal that final safe adapter combines itself to issue
Dynamical feedback signal is issued to safety control module.
Further, safety control module includes transmit circuit and receives circuit, and transmit circuit is for emitting dynamic chek
Signal gives safe adapter group, receives circuit for receiving dynamical feedback signal；Transmit circuit includes the first driver and first
Signal generator, the first signal generator are connect with the first drive circuit, and the first signal generator is for generating dynamic chek
Signal, the first driver and safe adapter group circuit connection, the first driver is for amplifying dynamic chek signal and being sent to
Safe adapter group；Receiving circuit includes the first level detector, time delay detection device and signal comparator, the first level detection
Device and safe adapter group circuit connection, the first level detector are used to receive and judge whether dynamical feedback signal is normal, when
Prolong detector to connect with signal comparator and the first level detection circuit respectively, time delay detection device is for detecting dynamical feedback letter
Number time delay, signal comparator connect with the first driver and the first level detection circuit respectively, signal comparator be used for than
Compared with the similarities and differences of dynamic chek signal and dynamical feedback signal.
Further, the first safe adapter further includes second electrical level detector, the first inversion signal controller, the second drive
Dynamic device and second signal generator, second electrical level detector connect with transmit circuit and the first inversion signal controller circuitry respectively
It connects, the first inversion signal controller is connect with the first safety detector and the second drive circuit respectively, the second driver and
The connection of binary signal generator circuit.
Further, safety control module further includes control circuit and output circuit；Control circuit and reception circuit circuit
Connection, control circuit is for controlling whether output circuit exports；Output circuit and control circuit circuit connection, output circuit are used for
Output services signal gives equipment connected to it.
Compared with prior art, beneficial effect is the utility model: the utility model proposes a kind of tandem type dynamics
Safe control loop, including safety control module, secure data line and safe adapter group, safety control module pass through safe number
It connects to form closed circuit with safe adapter group according to line, secure data line is used for transmission Dynamic Signal.Safety control module hair
Dynamic chek signal out is transferred to safe adapter group via secure data line, if the working condition of safe adapter group is normal,
Phasing back then is carried out to dynamic chek signal, dynamical feedback signal is generated, is transmitted back to safety control module, safety control module
To dynamic chek signal and dynamical feedback signal is compared and time-delay calculation, if practical time delay is consistent with default time delay, and compares
It is consistent compared with result with default result, then shows that the equipment in tandem type dynamic safety control circuit can work normally.The safety
Control loop structure is simple, using Dynamic Signal self-test, participates in without artificial, it will be able to reach the safe energy level of highest.And
Using safe adapter, quantity, when increasing safety sensor, safe control loop can be increased and decreased according to the actual demand of equipment
Main body remain unchanged, without in addition increasing safety relay or safety PLC.
Detailed description of the invention
Fig. 1 is the overall structure diagram of one embodiment of the utility model safe adapter；
Fig. 2-a is the overall structure diagram of one embodiment of the utility model tandem type dynamic safety control circuit；
Fig. 2-b is the detailed construction schematic diagram of one embodiment of the utility model tandem type dynamic safety control circuit；
Fig. 2-c is the detailed construction schematic diagram of another embodiment in the utility model tandem type dynamic safety control circuit；
Fig. 3 is the first safety in the embodiment of Fig. 2-b and Fig. 2-c in the utility model tandem type dynamic safety control circuit
Attachment structure schematic diagram between detector and the first safety equipment.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that in the utility model embodiment institute it is directional instruction (such as upper and lower, left and right, it is preceding,
It is only used for the relative positional relationship explained under a certain particular pose (as shown in the picture) between each component, movement afterwards ...)
Situation etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly, and the connection can be with
It is to be directly connected to, is also possible to be indirectly connected with.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and cannot manage
Solution is its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.In addition, the skill between each embodiment
Art scheme can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when technical solution
It will be understood that the combination of this technical solution is not present in conjunction with there is conflicting or cannot achieve when, also not in the utility model
It is required that protection scope within.
As shown in Figure 1, the utility model proposes a kind of safe adapter, including safety detector 4 and safety equipment 5,
Safety detector 4 and 5 circuit connection of safety equipment, and interface channel is one or more, safety detector 4 passes through interface channel
Pulse detection signals are sent to safety equipment 5, safety equipment 5 returns to pulse feedback signal according to pulse detection signals and gives safety inspection
Device 4 is surveyed, safety detector 4 obtains safety signal according to pulse feedback signal.Safety detector 4 is used to detect safety equipment 5
It is no in normal operating conditions and safety signal is obtained, in some embodiments, safety detector 4 by pulse detection signals come
It detects whether safety equipment 5 is in normal operating conditions, can mutually be known each other between safety equipment 5 and safety detector 4 to allow
, do not preset a specific pulse detection signals be predetermined pulse detect signal, correspondingly, also preset one it is specific
Pulse feedback signal be predetermined pulse feedback signal.Safety detector 4 first sends a pulse detection signals to safety equipment
5, safety equipment 5 can then return to a pulse feedback signal to safety detector 4, when safety detector 4 receives safety equipment 5
When the pulse feedback signal of return, the pulse feedback signal received is compared with predetermined pulse feedback signal, if peace
The pulse feedback signal that full equipment 5 returns is consistent with predetermined pulse feedback signal, then shows that safety equipment 5 is in and work normally shape
State, safety detector 4 will obtain safety signal.If safety detector 4 is not received by the pulse feedback of the return of safety equipment 5
Signal, or the pulse feedback signal received are not inconsistent with predetermined pulse feedback signal, then determine that safety equipment 5 is in improper
Working condition, then safety detector 4 will not obtain safety signal.Whether traditional determines safety equipment 5 by detection level
Method in normal operating conditions there is level detection qualification, but the short circuit of safety equipment 5 or breaks down
Error hidden danger, setting safety detector 4 detects safety equipment 5 with pulse detection signals, once safety equipment 5 breaks down, just
It can be immediately detected, avoid this error hidden danger, security level is higher.In further embodiments, safety detector 4 and peace
Connected between full equipment 5 using multichannel, such as binary channels connection, if having wherein a channel be not received by pulse feedback
Signal or the pulse feedback signal received are not inconsistent with predetermined pulse feedback signal, just determine that safety equipment 5 is in improper
Working condition improves security level, ensures production safety.It is short mutually between binary channels in order to prevent in yet other embodiments,
Road causes wherein but still to be able to the problem of receiving normal pulse feedback signal hair to faulty by an Air conduct measurement
Raw, setting safety detector 4 distinguishes received predetermined pulse feedback signal by binary channels for two different pulse feedbacks letter
Number, respectively predetermined pulse feedback signal and the second predetermined pulse feedback signal, the pulse as two passes receive is anti-
When feedback signal, then knows that short circuit has occurred between two passes, need to be repaired in time.In some embodiments, safety is suitable
Orchestration further includes inversion signal controller, and safety detector 4 can be sent to inversion signal controller after obtaining safety signal, with
Just it carries out next step operation, such as is decided whether to stop working the operating of equipment according to the safety signal that receives.
As shown in Fig. 2-a, Fig. 2-b, Fig. 2-c, the utility model proposes a kind of tandem type dynamic safety control circuit, packets
Safety control module 1, secure data line 2 and safe adapter group 3 are included, safe adapter group includes one or more above-mentioned peaces
Full adapter, in some embodiments, safety control module 1 include transmit circuit 11 and receive circuit 12, and transmit circuit 11 connects
Circuit 12 and safe adapter group 3 are received by 2 circuit connection of secure data line, and is connected into a closed circuit；Transmit circuit
11 for issuing dynamic chek signal to safe adapter group 3, and safe adapter group 3 is tied for receiving dynamic chek signal
Dynamical feedback signal is issued to circuit 12 is received after closing the safety signal of itself sending, and secure data line 2, which is used for transmission, dynamically to be examined
Signal and dynamical feedback signal are looked into, in some embodiments, dynamic chek signal and dynamical feedback signal are square-wave signal.?
In some embodiments, when the quantity of safe adapter is one, referred to as the first safe adapter 301, including the first safety
Detector 32 and the first safety equipment 36, the dynamical feedback signal issued are referred to as the first dynamical feedback signal, transmit circuit
11 send dynamic chek signal to the first safe adapter 301, and the first safe adapter 301 combines after receiving dynamic chek signal
After the safety signal that first safety detector 32 issues, issues the first dynamical feedback signal and give reception circuit 12.In some implementations
In example, the quantity of safe adapter be it is multiple, multiple safe adapters are connected in series, and name respectively according to the transmission sequence of signal
For the first safe adapter 301, the second safe adapter 302... and so on, correspondingly, these safe adapters are each spontaneous
Dynamical feedback signal out is referred to as the first dynamical feedback signal, second dynamical feedback signal ... and so on, last
A safe adapter being directly connected to reception circuit 12 is also referred to as final safe adapter 302, the dynamical feedback issued
Signal is also referred to as final dynamical feedback signal.Transmit circuit 11 sends dynamic chek signal and gives its first peace being directly connected to
Full adapter 301, the first safe adapter 301 receive the safety for combining the first safety detector 32 to issue after dynamic chek signal
After signal, the first dynamical feedback signal is issued to the second safe adapter 302, it is dynamic that the second safe adapter 302 receives first
Then the safety signal for combining the safety detector of itself to issue after state feedback signal issues the second dynamical feedback signal to the
Three safe adapters or safety control module 1, and so on, until the final safe adapter being directly connected to reception circuit 12
Final dynamical feedback signal is issued after 302 safety signals for combining the safety detector of itself to issue to circuit 12 is received, and is being schemed
In 2-b, since the quantity of safe adapter is two, the second safe adapter 302 is referred to as final safe adapter 302.
Circuit 12 is received after receiving the first dynamical feedback signal or final dynamical feedback signal, to the first dynamical feedback signal or
Final dynamical feedback signal carries out time-delay calculation and is compared with dynamic chek signal, if time delay is consistent with default time delay, and
Comparison result is consistent with default comparison result, then illustrates that entire safe control loop is in a safe condition, and equipment can be normal defeated
It works out, to achieve the purpose that safety detection and control.The quantity of secure data line 2 is one or more, in some implementations
In example, the quantity of secure data line 2 be it is a plurality of, at this time transmit circuit 11, receive circuit 12 and safe adapter group 3 pass through it is a plurality of
Secure data line 2 is separately connected, and each secure data line 2 constitutes a series loop, and a plurality of secure data line 2 constitutes multiple
A plurality of secure data line 2 is arranged in non-interfering series connection closed circuit, so that a secure data line 2 breaks down wherein
Later, another secure data line 2 is still able to carry out safety inspection work, keeps safety detection function more secure.
In some embodiments, transmit circuit 11 includes the first driver 112 and the first signal generator 111, the first letter
Number 112 circuit connection of generator 111 and the first driver, the first signal generator 111 is for generating dynamic chek signal, and first
Driver 112 and 3 circuit connection of safe adapter, the first driver 112 is for amplifying dynamic chek signal and being sent to safety
Adapter 3, the purpose for amplifying square-wave signal are that so that it will not consume and rapid decay because transmitting.Receiving circuit 12 includes the
One level detector 121, time delay detection device 122 and signal comparator 123, the first level detector 121 and safe adapter 3
Circuit connection, the first level detector 121 is for receiving dynamical feedback signal and detecting whether it normal, when safe adapter
When quantity is one, which is referred to as the first dynamical feedback signal, when the quantity of safe adapter is multiple,
The dynamical feedback signal is referred to as final dynamical feedback signal, if normal, then the first dynamical feedback signal or final dynamic is anti-
Feedback signal is sent respectively to time delay detection device 122 and signal comparator 123, in some embodiments, dynamic chek signal and dynamic
State feedback signal is all the square-wave signal of a fixed frequency, is previously set by user, if the first level detector 121
It detects received first dynamical feedback signal or final dynamical feedback signal is a noise signal or is not received by letter
Number, then illustrate there is safe adapter to break down in safe adapter group 3, so that the square-wave signal issued interrupts, it can not
Being communicated back in safety control module 1 or safe adapter group 3 has safe adapter to break down, and generates to square-wave signal
Interference, is allowed to become a chaotic noise signal.Time delay detection device 122 respectively with signal comparator 123 and the first level
121 circuit connection of detector, time delay detection device 122 are used to detect the time delay of dynamical feedback signal, since safety control module 1 is sent out
Dynamic chek signal is transmitted in control loop out, by entire series loop, is ultimately converted to the first dynamical feedback letter
Number or final dynamical feedback signal pass safety control module 1 back and need certain time, i.e. time delay, specific length of time is by this
The quantity of the safe adapter connected in a tandem type dynamic safety control circuit is determined, i.e., by safe adapter group 3
The quantity of safe adapter is determined.The quantity of safe adapter in safe adapter group 3 is more, then time delay is longer, when
Prolong detector 122 to be exactly used to detect from the sending dynamic chek signal of safety control module 1 to the reception of safety control module 1 first
The specific length of time consumed by dynamical feedback signal or final dynamical feedback signal, if with it is computed in advance default when
Prolong and be consistent, when there is safe adapter to generate short circuit in safety control module 1 or safe adapter group 3, although still may
Receive correct first dynamical feedback signal or final dynamical feedback signal, but because the quantity of its safe adapter passed through compared with
It is few, therefore its propagation delay time is less than default time delay, even if the first dynamical feedback signal at this moment received or final dynamical feedback
Signal is correct, but because practical time delay is not inconsistent with default time delay, still determines there is safe adapter in safe adapter group 3
It breaks down；Respectively with 121 circuit connection of the first driver 112 and the first level detector, signal compares signal comparator 123
Device 123 is used to compare the similarities and differences of dynamic chek signal and dynamical feedback signal, in some embodiments, the quantity of safe adapter
To be multiple, the first safe adapter 301 in the square-wave signal for receiving safety control module 1 and sending, i.e., dynamic chek signal it
Afterwards, whether the safety signal obtained in conjunction with the first safety detector 32 determines the first safety equipment 36 in normal work shape
State shows that the first safety equipment 36 is in normal operating conditions, then to reception if the first safety detector 32 obtains safety signal
The square-wave signal arrived carries out phasing back, that is, is converted to the first dynamical feedback signal, amplifies and is sent to concatenated second safety
Adapter 302 shows that the first safety equipment 36 is in non-normal working if the first safety detector 32 does not obtain safety signal
State then will not carry out phasing back to the square-wave signal received, i.e., will not issue the first dynamical feedback signal, make to control safely
Molding block 1 will not receive dynamical feedback signal；Second safe adapter 302 is also to execute same operation, and it is dynamic to have received first
After state feedback signal, in conjunction with the safety signal of the safety detector sending of itself, if the second safe adapter 302 has obtained peace
Full signal shows that the second safety equipment 37 is in normal operating conditions, then carries out phase to the first dynamical feedback signal received
Bit reversal is converted to the second dynamical feedback signal, amplify and be sent to third safe adapter or safety control module 1, if
Second safe adapter 302 does not obtain safety signal, then will not issue the second dynamical feedback signal, make safety control module 1
Dynamical feedback signal will not be received；And so on, until the first dynamical feedback signal or final dynamical feedback signal transmit
Return safety control module 1, if therefore the safe adapter in safe adapter group 3 quantity be odd number, safety control module 1
The the first dynamical feedback signal or final dynamical feedback signal received is identical as the dynamic chek signal waveform of sending, phase phase
Instead, if the quantity of the safe adapter in safe adapter group 3 is even number, the first dynamic that safety control module 1 receives
Feedback signal or final dynamical feedback signal are identical as the dynamic chek signal waveform of sending, and phase is also identical, i.e., at this time dynamically
Check that signal is identical with dynamical feedback signal, by presetting the quantity of safe adapter in safe adapter group 3, with
Dynamic chek signal is compared, and can distinguish whether the first dynamical feedback signal received or final dynamical feedback signal accord with
Close default dynamical feedback signal.
In some embodiments, the first safe adapter 301 includes second electrical level detector 31, the first safety detector
32, the first inversion signal controller 33, the second driver 35, second signal generator 34 and the first safety equipment 36, the second electricity
Flat detector 31 and 11 circuit connection of transmit circuit, second electrical level detector 31 is for receiving and whether judging dynamic chek signal
Normally, in some embodiments, in some embodiments, dynamic chek signal and dynamical feedback signal are all a fixed frequencies
Square-wave signal, be previously set by user, be if second electrical level detector 31 detects received dynamic chek signal
One noise signal is not received by signal, then illustrates that safety control module 1 breaks down, so that the square wave issued
Signal interruption or safety control module 1 break down, and generate interference to square-wave signal, be allowed to become one it is chaotic miscellaneous
Wave signal.It, just can be dynamic after second electrical level detector 31 detects safety inspection signal for a normal square-wave signal
Check that signal is sent to the first inversion signal controller 33, if not a normal square-wave signal, then it will not be dynamic chek
Signal is sent to the first inversion signal controller 33, and safety control module 1 is made not receive the first dynamical feedback signal or most
Whole dynamical feedback signal.33 circuit connection of second electrical level detector 31 and the first inversion signal controller, the first safety detector
32 respectively with 33 circuit connection of the first safety equipment 36 and the first inversion signal controller, and the second driver 35 is anti-with first respectively
34 circuit connection of phase signals controller 33 and second signal generator.First safety detector 32 is for detecting the first safety equipment
Whether it is in normal operating conditions, obtains safety signal and be sent to the first inversion signal controller, if the first safety equipment 36
In normal operating conditions, the first safety detector 32 can continue to send safety signal to the first inversion signal controller 33,
In some embodiments, whether the first safety detector 32 detects the first safety equipment 36 by pulse detection signals in normal
Working condition can identify mutually between the first safety equipment 36 and the first safety detector 32 in order to allow, preset one
Specific pulse detection signals are that predetermined pulse detects signal, correspondingly, also presetting a specific pulse feedback signal
For predetermined pulse feedback signal.First safety detector 32 first sends a predetermined pulse detection signal to the first safety equipment
36, the first safety equipment 36 can then return to a pulse feedback signal to the first safety detector 32, when the first safety detector
32 receive the first safety equipment 36 return pulse feedback signal when, the pulse feedback signal received and predetermined pulse is anti-
Feedback signal is compared, if the pulse feedback signal that the first safety equipment 36 returns is consistent with predetermined pulse feedback signal,
Show that the first safety equipment 36 is in normal operating conditions, the first safety detector 32 will obtain safety signal and be sent to
One inversion signal controller 33, if the first safety detector 32 is not received by the pulse feedback letter of the first safety equipment 36 return
Number, or the pulse feedback signal received is not inconsistent with predetermined pulse feedback signal, then determines that the first safety equipment 36 is in non-
Normal operating conditions, the first safety detector 32 will not obtain safety signal.Traditional determines that safety is set by detection level
The standby method for whether being in normal operating conditions, there is level detection qualifications, but safety equipment is short-circuit or occurs
The error hidden danger of failure, the first safety detector 32 of setting detect the first safety equipment 36 with pulse detection signals, once first
Safety equipment 36 breaks down, and can be immediately detected, and avoids this error hidden danger, and security level is higher.In other realities
It applies in example, is connected between the first safety detector 32 and the first safety equipment 36 using multichannel, such as Fig. 2-b, Fig. 2-c, Fig. 3 institute
Show, between the first safety detector 32 and the first safety equipment 36 using binary channels connect, as long as have wherein a channel do not have
The pulse feedback signal for receiving pulse feedback signal or receiving is not inconsistent with predetermined pulse feedback signal, just determines the first peace
Full equipment 36 is in abnormal operating state, improves security level, ensures production safety.In yet other embodiments, in order to anti-
It is only shorted with each other between binary channels, causes wherein an Air conduct measurement still but to be able to receive normal arteries and veins to faulty
The problem of rushing feedback signal generation is arranged the first safety detector 32 by binary channels and distinguishes received predetermined pulse feedback signal
For two different pulse feedback signals, respectively the first predetermined pulse feedback signal and the second predetermined pulse feedback signal, when
When two passes receive the same pulse feedback signal, then knows that short circuit has occurred between two passes, need to carry out in time
It repairs.First inversion signal controller 33 combines safety signal and dynamic chek signal to obtain the first feedback result and is sent to the
Two drivers 35, only in the case where safety signal and dynamic chek signal all receive, the first inversion signal controller 33
It can just obtain the first feedback result for sending the first dynamical feedback signal, and be sent to the second driver 35, safety signal and dynamic
There is one of them to be not received by as long as state checks in two signals of signal, the first inversion signal controller 33 would not send the
One feedback result gives the second driver 35.Second driver 35 drives second signal generator according to the first feedback result is received
34 generate the first dynamical feedback signal, and then the second driver 35 is for amplifying the first dynamical feedback signal and being sent to reception electricity
Road 12 or the second safe adapter 302 being connected in series.Safe adapter group 3 includes one or more safe adapters, one
In a little embodiments, when the quantity of safe adapter is multiple, and so on, the second safe adapter 302 after being connected on,
Or even the final safe adapter 302 of third safe adapter ... is all to execute same operation, directly connect until with reception circuit 12
The final safe adapter 302 connect combines inherently safe situation to issue final dynamical feedback signal to circuit 12 is received, in Fig. 2-c
In, since the quantity of safe adapter is two, the second safe adapter 302 is final safe adapter 302.Receive circuit
12 after receiving the first dynamical feedback signal or final dynamical feedback signal, to the first dynamical feedback signal or final dynamic
Feedback signal carries out time-delay calculation and is compared with dynamic chek signal, if time delay is consistent with default time delay, and comparison result
Be consistent with default comparison result, then illustrate that entire safe control loop is in a safe condition, equipment can normal output services, from
And achieve the purpose that safety detection and control.
In some embodiments, safety control module 1 further includes control circuit 13 and output circuit 14；Control circuit 13 with
12 circuit connection of circuit is received, control circuit 13 is used to control according to the comparison result of dynamic chek signal and dynamical feedback signal
Whether output circuit 14 processed exports；Output circuit 14 and 13 circuit connection of control circuit, output circuit 14 are believed for output services
Number give equipment connected to it.Control circuit 13 includes two channel relay dynamic driver 131, and two channel relay dynamic is driven
Dynamic device 131 and 123 circuit connection of signal comparator；Output circuit 14 includes guiding relay, be oriented to relay and binary channels after
131 circuit connection of electric appliance dynamic driver, signal comparator 123 the time-delay calculation result for combining time delay detection device 122 with
And after the comparison result of dynamic chek signal and the first dynamical feedback signal or final dynamical feedback signal, it is sent to binary channels
Relay dynamic driver 131, if practical time delay is consistent with default time delay, and signal comparison result is correct, then binary channels relay
Device dynamic driver 131 will drive guiding relay normally to export, and work normally the equipment of connection, if one of them result
Not being inconsistent or two results are not all inconsistent, then two channel relay dynamic driver 131 will drive guiding cut-off output, into
Row equipment safety inspection, in some embodiments, guiding relay include the first guiding relay 141 and the second guiding relay
142, binary channels output is carried out, after an output channel breaks down, another output channel is still able to work normally,
So that in device fails, can timely pass hull closure, ensure the safety of equipment and operator, improve the safety of equipment
Grade.In further embodiments, output circuit 14 further includes signal controller 143, and signal controller 143 is led with first respectively
To relay 141 and second guiding 142 circuit connection of relay, for export first guiding relay 141 and second guiding after
The indication signal whether electric appliance 142 works normally facilitates user to understand equipment working condition.
In some embodiments, safety control module 1 further includes reset circuit 15, and reset circuit 15 includes resetting control
Device, reset controller with guiding relay circuit connect, guiding relay stop export, checked equipment safety situation it
Afterwards, carrying out resetting could restore normally to export again, reset control and include hand-reset and automatically reset, mode multiplicity,
It is simple and fast.
In conclusion the utility model proposes a kind of tandem type dynamic safety control circuit, including safety control module
1, secure data line 2 and safe adapter group 3, safety control module 1 are connected by secure data line 2 with safe adapter group 3
Closed circuit is formed, secure data line 2 is used for transmission Dynamic Signal.Safety control module 1 issues dynamic chek signal, via peace
Full data line 2 is transferred to safe adapter group 3, if the working condition of safe adapter group 3 is normal, to dynamic chek signal into
Row phasing back generates dynamical feedback signal, is transmitted back to safety control module 1, safety control module 1 to dynamic chek signal and
Dynamical feedback signal is compared and time-delay calculation, if practical time delay is consistent with default time delay, and comparison result and default result
It is consistent, then shows that the equipment in tandem type dynamic safety control circuit can work normally.The safe control loop structure is simple,
Using Dynamic Signal self-test, participated in without artificial, it will be able to reach the safe energy level of highest.And safe adapter group 3 is used,
Quantity can be increased and decreased according to the actual demand of equipment, when increasing safety sensor, the main body of safe control loop is remained unchanged,
Without in addition increasing safety relay or safety PLC.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, is directly or indirectly transported
Used in other related technical areas, it is also included in the patent protection scope of the utility model.
Claims (6)
1. a kind of safe adapter, which is characterized in that including safety detector and safety equipment, the safety detector with it is described
Safety equipment circuit connection, and interface channel is one or more, the safety detector sends arteries and veins by the interface channel
Punching detection signal gives the safety equipment, and the safety equipment returns to pulse feedback signal to institute according to the pulse detection signals
Safety detector is stated, the safety detector obtains safety signal according to the pulse feedback signal.
2. a kind of tandem type dynamic safety control circuit, which is characterized in that including safety control module, secure data line and safety
Adapter group, the safe adapter group include one or more safe adapters described in claim 1, the security control
Module and the safe adapter group are connected into a closed circuit by the secure data line circuit connection；The peace
For full control module for issuing dynamic chek signal to the safe adapter group, the safe adapter group is described for receiving
Dynamic chek signal, and the safety control module is given in conjunction with sending dynamical feedback signal after the safety signal；The safety
The quantity of data line is one or more, when the quantity of the secure data line is a plurality of, the safety control module and institute
It states safe adapter group to be separately connected by a plurality of secure data line, secure data line described in each constitutes a series connection
Closed circuit is not interfere with each other mutually between the series connection closed circuit.
3. tandem type dynamic safety control according to claim 2 circuit, which is characterized in that when the safe adapter
When quantity is one, referred to as the first safe adapter, first safe adapter includes the first safety equipment and the first peace
Full detector, the safety control module send the dynamic chek signal to first safe adapter, first peace
Full adapter receives the dynamic chek signal, and in conjunction with described in issuing after the safety signal of the first safety detector sending
Dynamical feedback signal gives the safety control module；When the quantity of the safe adapter is multiple, multiple safety are suitable
Orchestration is connected in series, and the safe adapter that the dynamical feedback signal is transmitted directly to the safety control module is referred to as
For final safe adapter；The safety control module sends the dynamic chek signal to first safe adapter, institute
It states the first safe adapter and receives the dynamic chek signal, and the safety letter issued in conjunction with first safety detector
The dynamical feedback signal is issued after number to concatenated next safe adapter, signal transfer mode and so on, by latter
A safe adapter receives the dynamical feedback signal that the previous safe adapter issues, and combines and itself issue
The safety signal after issue dynamical feedback signal, until the safety that the final safe adapter is issued in conjunction with itself
The dynamical feedback signal is issued after signal to the safety control module.
4. tandem type dynamic safety control according to claim 3 circuit, which is characterized in that the safety control module packet
Include transmit circuit and receive circuit, the transmit circuit for emitting the dynamic chek signal to the safe adapter group,
The reception circuit is for receiving the dynamical feedback signal；The transmit circuit includes that the first driver and the first signal occur
Device, first signal generator are connect with first drive circuit, and first signal generator is described for generating
Dynamic chek signal, first driver and the safe adapter group circuit connection, first driver is for amplifying
The dynamic chek signal is simultaneously sent to the safe adapter group；The reception circuit includes the first level detector, time delay
Detector and signal comparator, first level detector and the safe adapter group circuit connection, first electricity
Flat detector for receiving and judge whether the dynamical feedback signal normal, the time delay detection device respectively with the signal ratio
Connected compared with device with first level detection circuit, the time delay detection device be used for detect the dynamical feedback signal when
Prolong, the signal comparator is connect with first driver and first level detection circuit respectively, the signal ratio
Compared with the similarities and differences that device is used for the dynamic chek signal and the dynamical feedback signal.
5. tandem type dynamic safety control according to claim 4 circuit, which is characterized in that first safe adapter
It further include second electrical level detector, the first inversion signal controller, the second driver and second signal generator, second electricity
Flat detector is connect with the transmit circuit and the first inversion signal controller circuitry respectively, the first inversion signal control
Device processed is connect with first safety detector and second drive circuit respectively, second driver and described second
Signal generator circuit connection.
6. tandem type dynamic safety control according to claim 4 circuit, which is characterized in that the safety control module is also
Including control circuit and output circuit；The control circuit and the reception circuit circuit connection, the control circuit is for controlling
Make whether the output circuit exports；The output circuit and the control circuit circuit connection, the output circuit is for defeated
Working signal gives equipment connected to it out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821351053.8U CN208999785U (en) | 2018-08-21 | 2018-08-21 | Safe adapter and tandem type safe control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821351053.8U CN208999785U (en) | 2018-08-21 | 2018-08-21 | Safe adapter and tandem type safe control loop |
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| Publication Number | Publication Date |
|---|---|
| CN208999785U true CN208999785U (en) | 2019-06-18 |
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ID=66799651
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821351053.8U Withdrawn - After Issue CN208999785U (en) | 2018-08-21 | 2018-08-21 | Safe adapter and tandem type safe control loop |
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| CN (1) | CN208999785U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108958019A (en) * | 2018-08-21 | 2018-12-07 | 戴靖 | Safe adapter, tandem type safe control loop and method of controlling security |
-
2018
- 2018-08-21 CN CN201821351053.8U patent/CN208999785U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108958019A (en) * | 2018-08-21 | 2018-12-07 | 戴靖 | Safe adapter, tandem type safe control loop and method of controlling security |
| CN108958019B (en) * | 2018-08-21 | 2024-03-22 | 深圳市多恩技术有限公司 | Safety adapter, serial safety control loop and safety control method |
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