CN107678421A - A kind of pulse matching system and method in train control system - Google Patents
A kind of pulse matching system and method in train control system Download PDFInfo
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- CN107678421A CN107678421A CN201711033440.7A CN201711033440A CN107678421A CN 107678421 A CN107678421 A CN 107678421A CN 201711033440 A CN201711033440 A CN 201711033440A CN 107678421 A CN107678421 A CN 107678421A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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Abstract
The embodiment provides the pulse matching system and method in a kind of train control system, calibration system is in addition to including pulse output module, pulse conditioning module, transport module, signal receiving end, also include the calibration module and control module of communication connection, and calibration module communicates to connect with signal receiving end, control module is also connected with pulse output module；Calibration module is used to obtain the predetermined period of impulse ejection and the ratio of actual cycle, and the ratio of predetermined pulse dutycycle and actual pulse dutycycle；Control module is calibrated for ratio to the predetermined period of impulse ejection and the predetermined pulse dutycycle of impulse ejection.The cycle and dutycycle that the present invention can export to the pulse in train control system carry out dynamic in real time and adjusted, so that pulse signal transmitted by signal conditioning circuit and over long distances after, even in the case of failure, still enable to signal receiving end to receive correct pulse signal.
Description
Technical field
The present invention relates to train control system technical field, and in particular to the pulse matching system in a kind of train control system
System and method.
Background technology
Pulse control mode is because of the use of its unique Anti-Jamming Technique, it can be ensured that steady under worst industrial environment
Fixed, reliable work, the dust-removing control that large-scale deduster is realized in PLC controls can be substituted completely；Therefore pulse control mode is answered
For in various control fields, in the train control system of especially more main frames.
At present, more host synchronizations are realized using recurrent pulse or realize the basic of SERVO CONTROL etc. using pwm pulse etc.
Structure is as shown in figure 1, the effect of each functional module is as follows：
1) cpu function module, cycle and dutycycle of recurrent pulse etc. are set by counter, timer etc.；
2) pulse output function module, low and high level is produced by chip pin reversion etc. and inverted, produces pulse；
3) pulse conditioning functions module, by range-adjusting, the means such as enhancing driving force, pulse signal is made to meet distal end
The electric requirement of reception；
4) transport function, signal transmit on PCB or cable, and reach remote receiver structure；
5) edge capture module, catches the edge of pulse feedback signal, and produces interruption；
6) counting module, using high accuracy, high-frequency clock, the interruption triggered by edge capture module, pulse is calculated
The cycle of signal and dutycycle, and export and be adjusted to CPU.
But in above-mentioned pulse control mode, because the pulses generation in pure digi-tal electronics depends on CPU, therefore, if
When CPU external clock deterioration in accuracy make it that error increases, because CPU timing information is also dependent on external crystal-controlled oscillation, therefore make
This mistake can not be calibrated by obtaining CPU, and will to the clock accuracy of feedback count functional module in above-mentioned pulse control mode
Ask high, and feedback accuracy requires higher, and counting module clock frequency is higher, and therefore, above-mentioned pulse control mode is unsuitable for arranging
Vehicle control.
The content of the invention
For the problems of the prior art, the pulse matching system and method in train control system provided by the invention,
Dynamic in real time can be carried out to the cycle that the pulse in pulse-control system exports to adjust so that pulse signal is adjusted by signal
After managing circuit and transmitting over long distances, even in the case of failure, signal receiving end is still enabled to receive correct pulse
Signal.
In order to solve the above technical problems, the present invention provides following technical scheme：
In a first aspect, the present invention provides the pulse matching system in a kind of train control system, the calibration system includes
Pulse output module, pulse conditioning module, transport module and the signal receiving end communicated to connect successively；The calibration system is also wrapped
Include：The calibration module and control module of communication connection, and the calibration module communicates to connect with the signal receiving end, the control
Molding block is also connected with the pulse output module；
The calibration module is used to obtain the predetermined period of impulse ejection and the ratio of actual cycle in train control system
Value, and, the predetermined pulse dutycycle of impulse ejection and the ratio of actual pulse dutycycle；
The control module is used to preset the impulse ejection according to the ratio of the predetermined period and actual cycle
Cycle is calibrated, and, according to the ratio of the predetermined pulse dutycycle of the impulse ejection and actual pulse dutycycle to institute
The predetermined pulse dutycycle for stating impulse ejection is calibrated.
Further, the calibration module includes：The two divided-frequency unit and product communicated to connect with the signal receiving end
Subdivision, and, the divider with control module communication connection；
Two divided-frequency unit, integral unit and the divider communicate to connect successively.
Second aspect, the present invention also provide the burst Alignment Procedure in a kind of train control system, and the calibration method should
Realized with described pulse matching system, the burst Alignment Procedure includes：
The calibration module obtains the transport module and exported to the actual pulse of the current PRF signal of signal receiving end
Cycle, and the predetermined pulse cycle for the current PRF signal that the control module is sent is received, and current PRF letter is calculated
Number actual pulse cycle and predetermined pulse cycle ratio, and, by the actual pulse cycle of current PRF signal with it is default
The ratio of pulse period is sent to the control module；
The control module is according to the actual pulse cycle of the current PRF signal of reception and the ratio in predetermined pulse cycle
The predetermined pulse cycle is verified；If verification failure, the control module are entangled to the predetermined pulse cycle
Partially, and the pulse output module according to the predetermined pulse periodic Control after correction sends next pulse signal to the pulse and adjusted
Manage module so that the pulse signal after conditioning is sent to the signal and connect by the pulse conditioning module through the transport module
Receiving end.
Further, the calibration module obtains the transport module and exported to the current PRF signal of signal receiving end
The actual pulse cycle, and the predetermined pulse cycle for the current PRF signal that the control module is sent is received, and be calculated and work as
The actual pulse cycle of prepulse signal and the ratio in predetermined pulse cycle, and, by the actual pulse week of current PRF signal
The ratio of phase and predetermined pulse cycle are sent to the control module, including：
The two divided-frequency unit acquisition transport module with signal receiving end communication connection in the calibration module
Export to the current PRF signal of signal receiving end, and scaling down processing is carried out to the pulse signal；
The integral unit communicated to connect with the signal receiving end in the calibration module is to the pulse after scaling down processing
Signal is integrated, and obtains the actual pulse cycle of current PRF signal；
The control module transmission of the divider reception with control module communication connection in the calibration module
Current PRF signal the predetermined pulse cycle, and actual pulse cycle of current PRF signal and predetermined pulse week is calculated
The ratio of phase, and, the ratio in the actual pulse cycle of current PRF signal and predetermined pulse cycle is sent to the control
Module.
Further, the calibration method also includes：
It is described when the integral unit is obtained and exported to the actual pulse cycle of the current PRF signal of signal receiving end
Integral unit and divider also obtain the actual pulse dutycycle of current PRF signal.
Further, the integral unit and divider also obtain the actual pulse dutycycle of current PRF signal, bag
Include：
The integral unit obtains output to the current PRF signal of signal receiving end, and the pulse signal is accumulated
Point；
The integral unit obtains current PRF according to the level value of current PRF signal and to the pulse signal after integration
The high level lasting time of signal；
The divider is according to high level lasting time and actual pulse cycle of current PRF signal, it is determined that working as
The actual pulse dutycycle of prepulse signal.
Further, the calibration method also includes：
The divider receives the predetermined pulse dutycycle for the current PRF signal that the control module is sent, and calculates
The actual pulse dutycycle of current PRF signal and the ratio of predetermined pulse dutycycle are obtained, and, by current PRF signal
The ratio of actual pulse dutycycle and predetermined pulse dutycycle is sent to the control module；
Further, methods described also includes：
The control module is according to the actual pulse dutycycle of current PRF signal and the ratio pair of predetermined pulse dutycycle
The predetermined pulse dutycycle is verified；
If verification failure of the control module to the predetermined pulse dutycycle, control module are described pre- to verification failure
If pulse duty factor is rectified a deviation, and pulse output module is sent according to the predetermined pulse Duty ratio control after correction
Next pulse signal is to the pulse conditioning module so that the pulse conditioning module is by described in the pulse signal warp after conditioning
Transport module is sent to the signal receiving end.As shown from the above technical solution, a kind of train control system provided by the invention
In pulse matching system and method, calibration system except pulse output module, pulse conditioning module, transport module, signal receive
End is outer, includes the calibration module and control module of communication connection, and calibration module communicates to connect with signal receiving end, controls mould
Block is also connected with pulse output module；Calibration module is used to obtain the predetermined period of impulse ejection and the ratio of actual cycle, with
And the ratio of predetermined pulse dutycycle and actual pulse dutycycle；Control module be used for ratio to the predetermined period of impulse ejection and
The predetermined pulse dutycycle of impulse ejection is calibrated.The present invention can in train control system pulse export cycle and
Dutycycle carries out dynamic in real time and adjusted so that pulse signal transmitted by signal conditioning circuit and over long distances after, even failure
In the case of, still enable to signal receiving end to receive correct pulse signal.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation of existing pulse-control system；
Fig. 2 is the structural representation of the pulse matching system in the train control system of the present invention；
Fig. 3 is pulse signal transmission schematic diagram in the pulse check system in the train control system of the present invention；
Fig. 4 is that the flow of the first embodiment of the burst Alignment Procedure in the train control system of the present invention is shown
It is intended to；
Fig. 5 is that the flow of second of embodiment of the burst Alignment Procedure in the train control system of the present invention is shown
It is intended to；
Fig. 6 is the schematic flow sheet of the step 100 in the burst Alignment Procedure in the train control system of the present invention；
Fig. 7 is the schematic flow sheet of the step A00 in the burst Alignment Procedure in the train control system of the present invention；
Fig. 8 is the schematic diagram of a feedback pulse signal in the application example of the present invention；
Fig. 9 is the signal of the pulse signal after two divided-frequency in the application example of the burst Alignment Procedure of the present invention
Figure.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
For problems of the prior art, the present invention provide a kind of pulse matching system in train control system and
Method.It is understood that the burst Alignment Procedure described in the embodiment of the present invention is applied in pulse-control system, and pulse control
System processed can be specifically applied in a kind of train control system of more main frames.Pulse matching system provided by the invention, passes through
Output is obtained to the actual pulse cycle of the current PRF signal of signal receiving end, and according to the actual pulse of current PRF signal
The ratio in cycle and predetermined pulse cycle verifies to the predetermined pulse cycle；If verification failure, to the default arteries and veins
Rush the cycle to be rectified a deviation, and next pulse signal is sent to the signal receiving end according to the predetermined pulse cycle after correction；Energy
The cycle that enough pulses in pulse-control system export carries out dynamic in real time and adjusted so that pulse signal passes through signal condition
After circuit and over long distances transmission, or even in the case of failure, signal receiving end can still receive correct pulse signal.Below
Explanation will be explained in detail to the present invention by first to sixth embodiment.
Embodiments of the invention one provide a kind of embodiment of the pulse matching system in train control system,
Referring to Fig. 2 and Fig. 3, the pulse matching system specifically includes following content：
In addition to the pulse output module, pulse conditioning module, transport module and the signal receiving end that communicate to connect successively, institute
Stating calibration system also includes：The calibration module 10 and control module 20 of communication connection, and the calibration module 10 and the signal
Receiving terminal is communicated to connect, and the control module 20 is also connected with the pulse output module.
The calibration module 10 is used for the predetermined period for obtaining impulse ejection in train control system and actual cycle
Ratio, and, the predetermined pulse dutycycle of impulse ejection and the ratio of actual pulse dutycycle.
In the foregoing description, the calibration module 10 obtains the transport module and exported to the current PRF of signal receiving end
The actual pulse cycle of signal, and the predetermined pulse cycle for the current PRF signal that the control module is sent is received, and calculate
The actual pulse cycle of current PRF signal and the ratio in predetermined pulse cycle are obtained, and, by the reality of current PRF signal
The ratio of pulse period and predetermined pulse cycle are sent to the control module.
The control module 20 is used for according to the ratio of the predetermined period and actual cycle to the pre- of the impulse ejection
If the cycle is calibrated, and, according to the ratio pair of the predetermined pulse dutycycle of the impulse ejection and actual pulse dutycycle
The predetermined pulse dutycycle of the impulse ejection is calibrated.
In the foregoing description, the control module 20 is all according to the actual pulse cycle of current PRF signal and predetermined pulse
The ratio of phase verifies to the predetermined pulse cycle；Actual duty cycle and default dutycycle always according to current PRF signal
Ratio the predetermined pulse dutycycle is verified；And to the predetermined pulse cycle and the predetermined pulse dutycycle
Verification not all succeed when, to verification failure the predetermined pulse cycle and/or predetermined pulse dutycycle rectify a deviation, and
Next pulse signal to the signal is sent according to the predetermined pulse cycle after correction and/or predetermined pulse dutycycle to receive
End.
In a kind of embodiment, specifically included in the calibration module 10：
The two divided-frequency unit 11 and integral unit 12 communicated to connect with the signal receiving end, and, with the control
The divider 13 that module 20 communicates to connect；The two divided-frequency unit 11, integral unit 12 and divider 13 communication link successively
Connect.
In the foregoing description, the two divided-frequency unit 11, which is used to obtain, exports to the current PRF signal of signal receiving end,
And two divided-frequency processing is carried out to the pulse signal；The integral unit 12 is used to integrate the pulse signal after two divided-frequency,
The actual pulse cycle of current PRF signal is obtained, and for obtaining output to the current PRF signal of signal receiving end, and
The pulse signal is integrated；The divider 13 be used to being calculated actual pulse cycle of current PRF signal with it is pre-
If the ratio of pulse period, and for the pulse signal level value and product after the level value and integration according to current PRF signal
Pulse signal after point, obtains the high level lasting time of current PRF signal；And the height according to current PRF signal
Level duration and actual pulse cycle, the actual duty cycle of current PRF signal is determined, and current PRF letter is calculated
Number actual duty cycle and default dutycycle ratio.
It is understood that the two divided-frequency unit 11 in the present embodiment can be specially a kind of two-divider, and this two points
Frequency device can be a kind of circuit arrangement, be provided with frequency-halving circuit, and the frequency-halving circuit is led to same clock signal
Cross the clock signal that certain circuit structure is transformed into different frequency.Two divided-frequency is exactly the circuit structure by there is frequency dividing to act on,
When clock often triggers 2 cycles, the circuit of 1 periodic signal of circuit output；Integral unit 12 in the present embodiment can have
Body is a kind of integrator, and the integrator can be a kind of circuit arrangement, is provided with integrating circuit, and the integrating circuit can be with
For the arbitrary form of above-mentioned integrating function can be realized, it is specifically as follows a resistance by connecting and an electric capacity forms；Institute
State divider 13 can be it is a kind of be used to produce the device of output voltage or electric current, itself and two or more independent input voltages
Or the product of electric current is proportional.
The embodiment of pulse matching system provided by the invention specifically can be used for performing following each burst Alignment Procedures realities
The handling process of example is applied, its function will not be repeated here, and be referred to the detailed description of above method embodiment.
It was found from foregoing description, the pulse matching system of embodiments of the invention offer can be in pulse-control system
Pulse output cycle and dutycycle carry out dynamic in real time and adjust so that pulse signal by signal conditioning circuit and it is long away from
After transmission, or even in the case of failure, signal receiving end can still receive correct pulse signal.
Embodiments of the invention two provide a kind of the first specific implementation of the burst Alignment Procedure in train control system
Mode, referring to Fig. 4, the burst Alignment Procedure specifically includes following content：
Step 100：The calibration module obtains the transport module and exported to the current PRF signal of signal receiving end
The actual pulse cycle, and the predetermined pulse cycle for the current PRF signal that the control module is sent is received, and be calculated and work as
The actual pulse cycle of prepulse signal and the ratio in predetermined pulse cycle, and, by the actual pulse week of current PRF signal
The ratio of phase and predetermined pulse cycle are sent to the control module.
In step 100：The calibration module being arranged in pulse-control system obtains output to signal receiving end
The actual pulse cycle of current PRF signal.It is understood that pulse-control system include communicate to connect successively processor,
Pulse output module, pulse conditioning module, transport module and signal receiving end；Pulse matching device therein can respectively with institute
State processor and signal receiving end communication connection；Pulse matching device can also be the integrated device for itself including processor function
Part, i.e., as the processor in pulse-control system, also fetched with signal receiving end communication link and realize pulse matching function.
It is understood that the pulse signal that the calibration module obtains is pulse signal of the output to signal receiving end,
After i.e. via pulse output module, pulse conditioning module and transport module, the pulse signal of arriving signal receiving terminal.
Obtaining the actual pulse cycle T of current PRF signalfb, and the default arteries and veins of current PRF signal is being known in advance
On the premise of rushing cycle T, the control module can directly obtain the actual pulse cycle T of current PRF signalfbWith default arteries and veins
Rush the ratio T of cycle Td。
Step 200：The control module is all according to the actual pulse cycle of the current PRF signal of reception and predetermined pulse
The ratio of phase verifies to the predetermined pulse cycle；
If verification failure, into step 300；If verifying successfully, return to step 100.
In step 200, it can realize that the calibration module of processor function judges the ratio T of foregoing acquisitiondWhether
Equal to 1, if so, being then judged to verifying successfully, and the actual pulse cycle of the pulse signal of subsequent time is carried out.It is appreciated that
It is that the control module is exported to the acquisition cycle of the pulse signal of signal receiving end according to practical situations to be entered
Row setting.
If the ratio T of foregoing acquisitiondNot equal to 1, then verification failure is judged, it is determined that after verification failure, that is, need to depositing
The predetermined pulse cycle stored up in the control module carries out correction processing, is correct using the pulse signal for ensureing subsequently to send
Pulse signal.
Step 300：The predetermined pulse cycle and/or preset that control module described in the control module fails to verification
Pulse duty factor is rectified a deviation, and next according to the predetermined pulse cycle after correction and/or the transmission of predetermined pulse dutycycle
Pulse signal to the signal receiving end,
In step 300, the control module is rectified a deviation to the predetermined pulse cycle, and according to default after correction
Pulse period controls the pulse output module to send next pulse signal to the pulse conditioning module so that the pulse is adjusted
Reason module sends the pulse signal after conditioning to the signal receiving end through the transport module, and, control module pair
The predetermined pulse dutycycle of verification failure is rectified a deviation, and according to the predetermined pulse Duty ratio control after correction
Pulse output module sends next pulse signal to the pulse conditioning module so that the pulse conditioning module is by after conditioning
The pulse signal is sent to the signal receiving end through the transport module.
It was found from foregoing description, the burst Alignment Procedure of embodiments of the invention offer can be in pulse-control system
Pulse output cycle carry out in real time dynamic adjust so that pulse signal by signal conditioning circuit and over long distances transmit
Afterwards, or even in the case of failure, signal receiving end can still receive correct pulse signal.
Embodiments of the invention three provide second of embodiment of above-mentioned burst Alignment Procedure, described referring to Fig. 5
Burst Alignment Procedure also specifically includes following content：
The acquisition output of step 100 is being performed to the process in the actual pulse cycle of the current PRF signal of signal receiving end
In, also perform step A00：Output is obtained to the actual pulse week of the current PRF signal of signal receiving end in the integral unit
During the phase, the integral unit and divider also obtain the actual pulse dutycycle of current PRF signal.
Step B00：The divider receives the predetermined pulse duty for the current PRF signal that the control module is sent
Than, and the actual pulse dutycycle of current PRF signal and the ratio of predetermined pulse dutycycle is calculated, and, by current arteries and veins
The ratio of the actual pulse dutycycle and predetermined pulse dutycycle of rushing signal is sent to the control module.
In step B00, the control module obtains the actual duty cycle of current PRF signal.
Obtaining the actual duty cycle D of current PRF signalfb, and the default duty of current PRF signal is being known in advance
On the premise of than D, the control module can directly obtain the actual duty cycle D of current PRF signalfbWith default dutycycle D's
Ratio Dd。
Corresponding, also include in step 200：The control module according to actual pulse cycle of current PRF signal with
The ratio in predetermined pulse cycle verifies to the predetermined pulse cycle, and the actual duty cycle according to current PRF signal
The predetermined pulse dutycycle is verified with the ratio of default dutycycle；
If verification failure, into step 301；If verifying successfully, return to step 100 and step B00.
In step 200, the control module is according to ratio TdWith ratio DdSchool is carried out to the predetermined pulse dutycycle
Test；If ratio TdWith ratio DdIn have any one be 1, then judge verification failure, into step 301；If ratio TdWith ratio Dd
1 is equal to, then judges to verify successfully, return to step 100 and step B00.
Corresponding, the step 301：The control module is to predetermined pulse cycle of verification failure and/or pre-
If pulse duty factor is rectified a deviation, and according under the predetermined pulse cycle after correction and/or the transmission of predetermined pulse dutycycle
One pulse signal is to the signal receiving end.
If it is understood that ratio TdBe not 1, then the predetermined pulse cycle that the control module fails to verification
T is rectified a deviation, until ratio TdEqual to 1；If ratio DdBe not 1, then the default duty that the control module fails to verification
Rectified a deviation than D, until ratio DdEqual to 1；If ratio TdWith ratio DdIt is not 1, then the control module is lost to verification respectively
The predetermined pulse cycle T and the default dutycycle D lost is rectified a deviation, until ratio TdWith ratio DdIt is equal to 1.
It was found from foregoing description, the burst Alignment Procedure of embodiments of the invention offer can be in pulse-control system
Pulse output cycle and dutycycle carry out dynamic in real time and adjust so that pulse signal by signal conditioning circuit and it is long away from
After transmission, or even in the case of failure, signal receiving end can still receive correct pulse signal.
In a kind of embodiment, referring to Fig. 6, the step 100 in above-mentioned burst Alignment Procedure specifically includes as follows
Content：
Step 101：The two divided-frequency unit acquisition with signal receiving end communication connection in the calibration module exports
Scaling down processing is carried out to the current PRF signal of signal receiving end, and to the pulse signal.
In a step 101, the two divided-frequency unit in pulse matching device obtains output to the current PRF of signal receiving end
Signal, and two divided-frequency processing is carried out to the pulse signal；And the pulse signal after two divided-frequency is handled sends to pulse matching and filled
Integral unit in putting.
Step 102：The integral unit communicated to connect with the signal receiving end in the calibration module is to scaling down processing
Pulse signal afterwards is integrated, and obtains the actual pulse cycle of current PRF signal.
In a step 102, after the integral unit in pulse matching device receives the two divided-frequency processing that two divided-frequency unit is sent
Pulse signal, and it is integrated, obtains the actual pulse cycle T of current PRF signalfb；And integral unit will connect
The actual pulse cycle T of the current PRF signal of receiptsfbSend to the divider in pulse matching device.
Step 103：The divider reception control with control module communication connection in the calibration module
The predetermined pulse cycle for the current PRF signal that module is sent, and be calculated actual pulse cycle of current PRF signal with it is pre-
If the ratio of pulse period, and, by the ratio in the actual pulse cycle of current PRF signal and predetermined pulse cycle send to
The control module.
In step 103, the divider in pulse matching device receives the current PRF signal that integral unit is sent
Actual pulse cycle Tfb, and the predetermined pulse cycle T for the current PRF signal that the control module is sent is received or obtains in advance,
The actual pulse cycle T of prepulse signal is calculated in dividerfbWith the ratio T of predetermined pulse cycle Td, and, division list
First ratio T by acquisitiondSend to the control module so that the control module is according to ratio TdCarry out the predetermined pulse cycle
Verification.
In a kind of embodiment, referring to Fig. 7, the step A00 in above-mentioned burst Alignment Procedure specifically includes as follows
Content：
Step A01：The integral unit obtains output to the current PRF signal of signal receiving end, and to the pulse signal
Integrated.
In step A01, integral unit obtains output to the current PRF signal of signal receiving end, and to the pulse signal
Integrated.
Step A02：The integral unit is according to the pulse signal level value after the level value and integration of current PRF signal
And the pulse signal after integration, obtain the high level lasting time of current PRF signal.
In step A02, pulse matching device according to the pulse signal after the level value L of current PRF signal and integration,
The high level lasting time t2 of current PRF signal is obtained, wherein, the actual pulse cycle T of pulsefb=t1+t2, t1 are current
The low duration of pulse signal.
Step A03：The divider is all according to the high level lasting time and actual pulse of current PRF signal
Phase, the actual duty cycle of current PRF signal is determined, and the actual duty cycle of current PRF signal and default duty is calculated
The ratio of ratio.
In step A03, divider is according to the high level lasting time t2 and actual pulse of current PRF signal
Cycle Tfb, determine the actual duty cycle D of current PRF signalfb=t2/Tfb, and actually accounting for for current PRF signal is calculated
Sky compares DfbWith default dutycycle D ratio Dd。
It was found from foregoing description, above-mentioned embodiment gives the cycle exported to the pulse in pulse-control system
The detailed process of dynamic adjustment in real time is carried out with dutycycle, enables to pulse signal to pass through signal conditioning circuit and long range
After transmission, or even in the case of failure, signal receiving end can still receive correct pulse signal.
For further instruction this programme, the present invention also provides a kind of application example of burst Alignment Procedure, specifically included
Following content：
Then divided by level value the cardinal principle of this application example is by being integrated to feedback pulse, and then is fed back
Burst length.Feedback pulse parameter and the pulse parameter of setting do division, obtain relative scale relation.CPU is defeated by divider
The proportionate relationship gone out, adjustment counter or timer etc. reach the purpose of correction pulse.
Wherein, the cycle of feedback pulse carries out integration acquisition again after two divided-frequency, and the time of pulse high level passes through
Directly pulse integration is obtained.
It is this CPU is fed back to using analogue integrator and divider data be not feedback pulse parameter value or difference,
But the ratio of setting pulse parameter and feedback pulse parameter, even if error occur in CPU external clocks, pulse can be also adjusted,
Remote receiver structure is set to receive correct pulse.Simultaneously need not high accuracy and high-frequency tally function module.
One feedback pulse signal is as shown in Figure 8：
Formula 1 is expressed as in a cycle：
Here L identifies level value, cycle T=t1+t2 of pulse, dutycycle d=t2/ (t1+t2).After integration, then
There is formula 2：
Calculate to obtain formula 3
Physical significance is the area of pulse covering.Known L value, then it can obtain feedback pulse high level duration
For t2.
Signal is as shown in Figure 9 after two divided-frequency：Equally, it is t1+t2 that high level lasting time is obtained after integration, two
The cycle T of feedback pulse before frequency dividingfb=t1+t2, dutycycle Dfb=t2/ (t1+t2).
If pulse signal cycle caused by CPU is T, dutycycle D, the data that divider feeds back to CPU are：
Td=Tfb/T
Dd=Dfb/D
CPU exports cycle and the dutycycle of pulse according to the dynamic adjustment of the two data, until TdAnd DdAll it is 1.
It was found from foregoing description, application example of the invention can in pulse-control system pulse export cycle and
Dutycycle carries out dynamic in real time and adjusted, need not be high-precision in feedback element, high-frequency counting module, it is possible to achieve CPU
Correctly output pulse in the case that external clock error is larger.
In the description of the invention, it is necessary to which the orientation of the instruction such as explanation, term " on ", " under " or position relationship are base
In orientation shown in the drawings or position relationship, description description of the invention and simplified, rather than instruction or hint are for only for ease of
Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The limitation of invention.Unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " should be interpreted broadly, example
Such as, can be fixedly connected or be detachably connected, or be integrally connected；Can mechanically connect or be electrically connected
Connect；Can be joined directly together, can also be indirectly connected by intermediary, can be the connection of two element internals.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
It should also be noted that, herein, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
Any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant are intended to contain
Lid nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Above example is merely to illustrate technical scheme, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed or replaced
Change, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. the pulse matching system in a kind of train control system, the calibration system includes the pulse output communicated to connect successively
Module, pulse conditioning module, transport module and signal receiving end；Characterized in that, the calibration system also includes：Communication connection
Calibration module and control module, and the calibration module and the signal receiving end communicate to connect, the control module also with
The pulse output module connection；
The calibration module is used to obtain the predetermined period of impulse ejection and the ratio of actual cycle in train control system, with
And the ratio of the predetermined pulse dutycycle of impulse ejection and actual pulse dutycycle；
The control module is used for the predetermined period according to the ratio of the predetermined period and actual cycle to the impulse ejection
Calibrated, and, according to the ratio of the predetermined pulse dutycycle of the impulse ejection and actual pulse dutycycle to the arteries and veins
The predetermined pulse dutycycle of punching transmitting is calibrated.
2. calibration system according to claim 1, it is characterised in that the calibration module includes：Connect with the signal
The two divided-frequency unit and integral unit of receiving end communication connection, and, the divider with control module communication connection；
Two divided-frequency unit, integral unit and the divider communicate to connect successively.
A kind of 3. burst Alignment Procedure in train control system, it is characterised in that the calibration method application claim 1 or
Pulse matching system described in 2 realizes that the burst Alignment Procedure includes：
The calibration module obtains the transport module and exported to the actual pulse cycle of the current PRF signal of signal receiving end,
And the predetermined pulse cycle for the current PRF signal that the control module is sent is received, and the reality of current PRF signal is calculated
The ratio of border pulse period and predetermined pulse cycle, and, by the actual pulse cycle of current PRF signal and predetermined pulse week
The ratio of phase is sent to the control module；
The control module is according to the actual pulse cycle of the current PRF signal of reception and the ratio in predetermined pulse cycle to institute
Stating the predetermined pulse cycle is verified；If verification failure, the control module are rectified a deviation to the predetermined pulse cycle, and
Next pulse signal to the pulse is sent according to pulse output module described in the predetermined pulse periodic Control after correction and nurses one's health mould
Block so that the pulse signal after conditioning is sent to the signal and received by the pulse conditioning module through the transport module
End.
4. calibration method according to claim 3, it is characterised in that the calibration module obtains the transport module output
To the actual pulse cycle of the current PRF signal of signal receiving end, and receive the current PRF signal that the control module is sent
The predetermined pulse cycle, and the actual pulse cycle of current PRF signal and the ratio in predetermined pulse cycle is calculated, and,
The ratio in the actual pulse cycle of current PRF signal and predetermined pulse cycle is sent to the control module, including：
The transport module output of the two divided-frequency unit acquisition with signal receiving end communication connection in the calibration module
Scaling down processing is carried out to the current PRF signal of signal receiving end, and to the pulse signal；
The integral unit communicated to connect with the signal receiving end in the calibration module is to the pulse signal after scaling down processing
Integrated, obtain the actual pulse cycle of current PRF signal；
The divider communicated to connect with the control module in the calibration module receives working as the control module transmission
The predetermined pulse cycle of prepulse signal, and the actual pulse cycle and predetermined pulse cycle of current PRF signal is calculated
Ratio, and, the ratio in the actual pulse cycle of current PRF signal and predetermined pulse cycle is sent to the control module.
5. calibration method according to claim 4, it is characterised in that the calibration method also includes：
When the integral unit is obtained and exported to the actual pulse cycle of the current PRF signal of signal receiving end, the integration
Unit and divider also obtain the actual pulse dutycycle of current PRF signal.
6. calibration method according to claim 5, it is characterised in that the integral unit and divider also obtain currently
The actual pulse dutycycle of pulse signal, including：
The integral unit obtains output to the current PRF signal of signal receiving end, and the pulse signal is integrated；
The integral unit obtains current PRF signal according to the level value of current PRF signal and to the pulse signal after integration
High level lasting time；
The divider is according to high level lasting time and actual pulse cycle of current PRF signal, it is determined that current arteries and veins
Rush the actual pulse dutycycle of signal.
7. calibration method according to claim 5, it is characterised in that the calibration method also includes：
The divider receives the predetermined pulse dutycycle for the current PRF signal that the control module is sent, and is calculated
The actual pulse dutycycle of current PRF signal and the ratio of predetermined pulse dutycycle, and, by the reality of current PRF signal
The ratio of pulse duty factor and predetermined pulse dutycycle is sent to the control module.
8. calibration method according to claim 7, it is characterised in that methods described also includes：
The control module is according to the actual pulse dutycycle of current PRF signal and the ratio of predetermined pulse dutycycle to described
Predetermined pulse dutycycle is verified；
If verification failure of the control module to the predetermined pulse dutycycle, the default arteries and veins of the control module to verification failure
Rush dutycycle to be rectified a deviation, and pulse output module transmission is next according to the predetermined pulse Duty ratio control after correction
Pulse signal is to the pulse conditioning module so that the pulse conditioning module is by the pulse signal after conditioning through the transmission
Module is sent to the signal receiving end.
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| CN201711033440.7A CN107678421B (en) | 2017-10-30 | 2017-10-30 | A kind of pulse matching system and method in train control system |
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| CN110518922A (en) * | 2019-08-29 | 2019-11-29 | 成都精位科技有限公司 | Reception gain adjusting method, device and wireless receiver |
| CN112054741A (en) * | 2020-08-06 | 2020-12-08 | 深圳市杉川机器人有限公司 | Motor control method and device, terminal equipment and storage medium |
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| CN107678421B (en) | 2019-08-13 |
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