CN109866784A - Channel self-checking unit and method, storage medium, train and its pull-in control system - Google Patents
Channel self-checking unit and method, storage medium, train and its pull-in control system Download PDFInfo
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Abstract
The invention discloses a kind of channel self-checking unit and method, storage medium, train and its pull-in control system, which includes: that reference signal provides module, and reference signal provides module for providing reference signal；N number of switching switch, the first input end of each switching switch is correspondingly connected with to a signal acquisition module, second input terminal of each switching switch is all connected to reference signal and provides module, the output end of each switching switch is correspondingly connected with to a signal transmission passage, wherein, corresponding between the same switching switch connected signal acquisition module and signal transmission passage；Control module, control module is switched over for controlling each switching switch, and when reference signal is input to corresponding signal transmission passage by the switching switch that control currently switches over, judge whether the signal transmission passage breaks down according to the self-test signal of signal transmission passage output and reference signal.The self-check of device easily and effectively, and has a wide range of application, and cost is relatively low.
Description
Technical field
The present invention relates to rail traffic control technology field, in particular to the channel self-test of a kind of signal acquiring system fills
Set, the channel self checking method of a kind of pull-in control system of train, a kind of train, a kind of signal acquiring system and one kind it is non-provisional
Property computer readable storage medium.
Background technique
In the pull-in control system of track train, control panel usually requires the signals such as acquisition electric current, voltage and temperature, with
It is protected for motor control or device.The above-mentioned signal of acquisition is most important for the normal operation of trailer system and protection, because
This necessary analog channel to these signals carries out self-test, to guarantee the accuracy of acquisition signal.
Currently, there are mainly two types of for the self-test measure generally taken: (1) same signal is using two or more
Analog channel is transmitted, and is then verified to the sampled signal after transmission, thinks that analog channel is sent out if result is inconsistent
Raw failure；(2) before pull-in control system operation, according to the initial value of default compared with actual sampled signal, if result is not
It is consistent then think that analog channel breaks down.
However, above-mentioned measure (1) acquires same letter since two or more analog channels being arranged on control panel
Number, it will increase a large amount of component and occupy a large amount of analog-to-digital conversion resources, higher cost.And it is passed using identical analog channel
Defeated signal, when common cause failure occurs for multiple analog channels, such as same type device in multiple analog channels because temperature,
The failure of the factors such as power supply, then the sampled value of possible multiple analog channels can be higher or relatively low simultaneously, and this kind of failure is not easy to know
Not.Therefore, above-mentioned measure (1) haves the shortcomings that at high cost, accuracy is poor.
Above-mentioned measure (2) is unsuitable for applying under some applications, and initial value is difficult to differentiate between, and leads to application range
It is relatively narrow.Such as voltage or current sample use the Hall sensor of current mode output, when voltage or electric current are zero, sensor is defeated
Electric current out is zero, cannot be distinguished whether because analog channel damage due to cause signal that can not transmit.Also, temperature sensor is by outer
The influence of boundary's variation of ambient temperature, initial value are not fixed, it is difficult to judge whether analog channel breaks down according to a certain initial value.
Summary of the invention
The present invention is directed to solve one of the technical problem in above-mentioned technology at least to a certain extent.For this purpose, of the invention
One purpose is to propose a kind of channel self-checking unit of signal acquiring system, can easily and effectively transport in signal acquiring system
Detect whether its signal transmission passage breaks down before row, so as to guarantee reliable, the efficient operation of signal acquiring system, and
And the channel self-checking unit has a wide range of application, cost is relatively low.
Second object of the present invention is to propose a kind of pull-in control system of train.
Third object of the present invention is to propose a kind of train.
Fourth object of the present invention is to propose a kind of channel self checking method of signal acquiring system.
5th purpose of the invention is to propose a kind of non-transitorycomputer readable storage medium.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of channel self-test dress of signal acquiring system
Set, wherein the signal acquiring system includes N number of signal acquisition module and N number of signal transmission passage, wherein N be more than or equal to
1 integer, the channel self-checking unit include: that reference signal provides module, and the reference signal provides module for providing base
Calibration signal；The first input end of N number of switching switch, each switching switch is correspondingly connected with to a signal acquisition module, often
Second input terminal of a switching switch is all connected to the reference signal and provides module, the output of each switching switch
End is correspondingly connected with to a signal transmission passage, wherein the signal acquisition module and signal being connected with the same switching switch pass
It is corresponding between defeated channel；Control module, the control module is switched over for controlling each switching switch, and is being controlled
When the reference signal is input to corresponding signal transmission passage by the switching switch that system currently switches over, passed according to the signal
The self-test signal of defeated channel output and the reference signal judge whether the signal transmission passage breaks down.
The channel self-checking unit of signal acquiring system according to an embodiment of the present invention provides module by reference signal and provides
Reference signal, and reference signal is input to corresponding signal transmission passage, then switching switch is controlled by control module
The self-test signal and reference signal that control module is exported according to the signal transmission passage judge whether the signal transmission passage occurs
Failure, thereby, it is possible to easily and effectively detect whether its signal transmission passage breaks down before signal acquiring system is run, from
And can guarantee reliable, the efficient operation of signal acquiring system, and the channel self-checking unit has a wide range of application, cost is relatively low.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of pull-in control system of train, packet
Include the channel self-checking unit of the signal acquiring system of first aspect present invention embodiment proposition.
The channel self-checking unit of the pull-in control system of train according to an embodiment of the present invention, signal acquiring system can
Easily and effectively whether detection signal transmission passage breaks down before signal acquiring system is run, so as to guarantee that signal is adopted
Reliable, the efficient operation of collecting system, substantially increase the performance of pull-in control system.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of train comprising second party of the present invention
The pull-in control system for the train that face embodiment proposes.
The performance of train according to an embodiment of the present invention, pull-in control system is higher.
In order to achieve the above objectives, fourth aspect present invention embodiment proposes the channel of signal acquiring system a kind of from procuratorial organ
Method, wherein the signal acquiring system includes N number of signal acquisition module, N number of signal transmission passage, reference signal offer module
It is switched with N number of switching, the reference signal provides module for providing reference signal, the first input of each switching switch
End is correspondingly connected with to a signal acquisition module, and the second input terminal that each switching switchs is all connected to the reference signal
Module is provided, the output end of each switching switch is correspondingly connected with to a signal transmission passage, wherein with the same switching
It is corresponding between the connected signal acquisition module of switch and signal transmission passage, wherein N is the integer more than or equal to 1, described logical
Road self checking method switches over the following steps are included: controlling the switching switch, and the reference signal is input to when advance
The switching of row switching switchs corresponding signal transmission passage；The self-test signal and the benchmark exported according to the signal transmission passage
Signal judges whether the signal transmission passage breaks down.
The channel self checking method of signal acquiring system according to an embodiment of the present invention provides module by reference signal and provides
Reference signal, and by control switching switch reference signal is input to corresponding signal transmission passage, then according to the letter
The self-test signal and reference signal of number transmission channel output judge whether the signal transmission passage breaks down, and thereby, it is possible to sides
Just effectively detect whether its signal transmission passage breaks down before signal acquiring system is run, so as to guarantee that signal is adopted
Reliable, the efficient operation of collecting system, and the channel self checking method has a wide range of application, additionally it is possible to reduce cost.
In order to achieve the above objectives, fifth aspect present invention embodiment proposes a kind of non-transitory computer-readable storage medium
Matter is stored thereon with computer program, and the letter that fourth aspect present invention embodiment proposes is realized when which is executed by processor
The channel self checking method of number acquisition system.
Non-transitorycomputer readable storage medium according to an embodiment of the present invention, by the computer journey for executing its storage
Sequence just effectively can detect whether its signal transmission passage breaks down before signal acquiring system is run, so as to protect
Demonstrate,prove reliable, the efficient operation of signal acquiring system.
Detailed description of the invention
Fig. 1 is the block diagram according to the channel self-checking unit of the signal acquiring system of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram according to the channel self-checking unit of the signal acquiring system of one embodiment of the invention；
Fig. 3 is the flow chart according to the channel self checking method of the signal acquiring system of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
With reference to the accompanying drawing come describe the embodiment of the present invention signal acquiring system channel self-checking unit and method, storage
Medium, train and its pull-in control system.
The signal acquiring system of the embodiment of the present invention can be applied in the pull-in control system of train, and signal acquiring system can
Including N number of signal acquisition module and N number of signal transmission passage, wherein N is the integer more than or equal to 1.
N number of signal acquisition module can be respectively to acquire external signal, for example, N number of signal acquisition module may include electric current
Sensor, voltage sensor and temperature sensor etc., respectively to acquire the analog signals such as electric current, voltage and temperature.
When signal acquiring system carries out external signal collecting work, N number of signal transmission passage can be with N number of signal acquisition mould
Block connects one to one, and is transmitted to will pass through signal transmission passage for corresponding signal acquisition module external signal collected
Control module, the external signal that control module transmits signal transmission passage are handled, such as will be believed for the external of analog quantity
It number digitizes etc., so that according to treated, external signal controls pull-in control system.
Fig. 1 is the block diagram according to the channel self-checking unit of the signal acquiring system of the embodiment of the present invention.
As shown in Figure 1, the channel self-checking unit of the signal acquiring system of the embodiment of the present invention, comprising: reference signal provides
Module 10, N number of switching switch 20 and control module 30.
Wherein, reference signal provides module 10 for providing reference signal；The first input end pair of each switching switch 20
It should be connected to a signal acquisition module, the second input terminal of each switching switch 20 is all connected to reference signal and provides module
10, the output end of each switching switch 20 is correspondingly connected with to a signal transmission passage, wherein with same 20 phase of switching switch
It is corresponding between signal acquisition module even and signal transmission passage；Control module 30 is carried out for controlling each switching switch 20
Switching, and when reference signal is input to corresponding signal transmission passage by the switching switch 20 that control currently switches over, root
Judge whether the signal transmission passage breaks down according to the self-test signal and reference signal of signal transmission passage output.
In one embodiment of the invention, it can be benchmark voltage source that reference signal, which provides module 10, and switching switch 20 can
For electronic switch or relay.As shown in Fig. 2, N number of signal acquisition module can be sensor 1 to sensor N, wherein the present invention
The sensor 1 of embodiment to sensor N be export electric current sensor.Each switching switch 20 may include movable contact, first
Stationary contact and the second stationary contact, wherein the first stationary contact is connected to sensor as the first input end of switching switch 20, and second
Stationary contact is connected to reference voltage source as the second input terminal of switching switch 20, and movable contact connects as the output end of switching switch
It is connected to signal transmission passage.
Before signal acquiring system carries out external signal collecting work, controllable portion or all the second of switching switch 20
The reference voltage of reference voltage source is input to some or all of corresponding signal and transmitted and led to by stationary contact and movable contact engagement
Road, the exportable corresponding voltage value of the transmission channel of input reference voltage.Control module 30 exports each signal transmission passage
Voltage value be compared with the reference voltage of input, if signal transmission passage output voltage value and input reference voltage
Unanimously, then the signal transmission passage is normal, i.e., does not break down；If the voltage value of signal transmission passage output and the base of input
Quasi- voltage is inconsistent, then the signal transmission passage is abnormal, that is, breaks down.
It should be noted that the voltage value of the above-mentioned output voltage value for referring to output consistent with the reference voltage of input with
The reference voltage of input is identical, or output voltage value and input reference voltage between meet signal transmission passage it is normal when
Fixed relationship between output signal and input signal.
In one embodiment of the invention, each signal transmission passage is for amplifying and passing the signal of input
It is defeated, wherein the reference voltage of the voltage of the self-test signal that control module 30 is exported according to the signal transmission passage, reference voltage source
Judge whether the signal transmission passage breaks down with the magnification ratio of the signal transmission passage.Specifically, if reference voltage
It is equal to the voltage of the self-test signal of signal transmission passage output with the product of the magnification ratio of the signal transmission passage, then controls mould
Block 30 can determine whether that the signal transmission passage does not break down；If the product of the magnification ratio of reference voltage and the signal transmission passage
Not equal to the voltage of the self-test signal of signal transmission passage output, then control module 30 can determine whether that the signal transmission passage occurs
Failure.
Further, as shown in Fig. 2, control module 30 may include the ADC (Analog-to- inside signal acquiring system
Digital Converter, analog-digital converter) unit and DSP (Digital Signal Processing, at digital signal
Reason) unit.
Wherein, ADC unit provides module 10 with reference signal respectively and N number of signal transmission passage is connected to obtain benchmark letter
Number and the output of each signal transmission passage signal, what ADC unit was used to export reference signal and each signal transmission passage
Signal is AD converted.DSP unit is connected with ADC unit, and is connected by I/O interface with N number of switching switch 20, and DSP unit is used
It switches in controlling each switching switch 20, and is input to reference signal in the switching switch 20 that control currently switches over
When corresponding signal transmission passage, according to the base after the self-test signal of the signal transmission passage output after AD conversion and AD conversion
Calibration signal judges whether the signal transmission passage breaks down.
In addition, reference signal is input to corresponding signal in the switching switch 20 that control currently switches over by DSP unit
Before transmission channel, judge that reference signal provides whether module 10 breaks down also according to the reference signal after AD conversion.
It can be to letter before signal acquiring system carries out external signal collecting work based on above-mentioned channel self-checking unit structure
Number transmission channel carries out self-test.In one particular embodiment of the present invention, channel self-test process can include: DSP unit passes through
ADC unit obtains the voltage magnitude of the reference voltage source of 1.5V, if voltage magnitude within the scope of 1.48-1.52V, judges benchmark
The reference voltage that voltage source provides is normal；Then DSP unit controls switching switch 20 by I/O interface, makes reference voltage source and letter
Number transmission channel is connected, sensor and signal transmission passage disconnect, and the input terminal of signal transmission passage is switched to 1.5V base
Quasi- source reference voltage source；Since the magnification ratio of each signal transmission passage is stored in advance in DSP unit, such as amplify
Ratio is 2 times, if the voltage amplitude of the self-test signal for the signal transmission passage output that DSP unit is obtained by ADC unit at this time
Value is 3V, then can determine whether that signal transmission passage does not break down, and if the voltage magnitude of self-test signal is not 3V, it can determine whether
Signal transmission passage breaks down.
Further, after carrying out self-test to signal transmission passage, if it is determined that the signal transmission passage does not break down,
Then control module 30 can be by controlling the corresponding switching switch 20 of the signal transmission passage for the corresponding letter of the signal transmission passage
Number acquisition module external signal collected inputs the signal transmission passage, and carrying out external signal to control signal acquiring system adopts
Collect work.Specifically, the first stationary contact and the movable contact engagement of the corresponding switching switch 20 of the signal transmission passage be can control, with
The corresponding sensor of signal transmission passage external signal collected is inputted into the signal transmission passage, it is then mono- by ADC
Member is AD converted to the external signal and inputs DSP unit, realizes the collecting work to the external signal.
The channel self-checking unit of signal acquiring system according to an embodiment of the present invention provides module by reference signal and provides
Reference signal, and reference signal is input to corresponding signal transmission passage, then switching switch is controlled by control module
The self-test signal and reference signal that control module is exported according to the signal transmission passage judge whether the signal transmission passage occurs
Failure, thereby, it is possible to easily and effectively detect whether its signal transmission passage breaks down before signal acquiring system is run, from
And can guarantee reliable, the efficient operation of signal acquiring system, and the channel self-checking unit has a wide range of application, cost is relatively low.
Corresponding above-described embodiment, the present invention also propose a kind of pull-in control system of train.
The pull-in control system of the train of the embodiment of the present invention, the signal acquisition system proposed including the above embodiment of the present invention
The channel self-checking unit of system, specific embodiment can refer to above-described embodiment, and to avoid redundancy, details are not described herein.
The channel self-checking unit of the pull-in control system of train according to an embodiment of the present invention, signal acquiring system can
Easily and effectively whether detection signal transmission passage breaks down before signal acquiring system is run, so as to guarantee that signal is adopted
Reliable, the efficient operation of collecting system, substantially increase the performance of pull-in control system.
Corresponding above-described embodiment, the present invention also propose a kind of train.
The train of the embodiment of the present invention, the pull-in control system including the train that the above embodiment of the present invention proposes.
The performance of train according to an embodiment of the present invention, pull-in control system is higher.
Corresponding above-described embodiment, the present invention also propose a kind of channel self checking method of signal acquiring system.
Wherein, the signal acquiring system of the embodiment of the present invention can be applied in the pull-in control system of train, signal acquisition
System includes N number of signal acquisition module, N number of signal transmission passage, reference signal provides module and N number of switching switchs.
N number of signal acquisition module can be respectively to acquire external signal, for example, N number of signal acquisition module may include electric current
Sensor, voltage sensor and temperature sensor etc., respectively to acquire the analog signals such as electric current, voltage and temperature.
When signal acquiring system carries out external signal collecting work, N number of signal transmission passage can be with N number of signal acquisition mould
Block connects one to one, and is transmitted to will pass through signal transmission passage for corresponding signal acquisition module external signal collected
Control module, the external signal that control module transmits signal transmission passage are handled, such as will be believed for the external of analog quantity
It number digitizes etc., so that according to treated, external signal controls pull-in control system.
Reference signal provides module and is correspondingly connected with for providing reference signal, the first input end of each switching switch to one
A signal acquisition module, the second input terminal of each switching switch are all connected to reference signal and provide module, each switching switch
Output end be correspondingly connected with to a signal transmission passage, wherein with the same switching signal acquisition module that is connected of switch and
It is corresponding between signal transmission passage, wherein N is the integer more than or equal to 1.
In one embodiment of the invention, it can be benchmark voltage source that reference signal, which provides module, and switching switch can be electricity
Sub switch or relay.As shown in Fig. 2, N number of signal acquisition module can be sensor 1 to sensor N, wherein the present invention is implemented
Example sensor 1 to sensor N be export electric current sensor.Each switching switch may include movable contact, the first stationary contact
With the second stationary contact, wherein the first stationary contact is connected to sensor as the first input end of switching switch, and the second stationary contact is made
It is connected to reference voltage source for the second input terminal of switching switch, movable contact is connected to signal as the output end of switching switch and passes
Defeated channel.
As shown in figure 3, the channel self checking method of the signal acquiring system of the embodiment of the present invention, comprising the following steps:
S1, control switching switch switch over, and reference signal is input to the switching switch currently switched over and is corresponded to
Signal transmission passage.
Before signal acquiring system carries out external signal collecting work, the second of controllable portion or all switching switch is quiet
The reference voltage of reference voltage source is input to some or all of corresponding signal transmission passage by contact and movable contact engagement,
The exportable corresponding voltage value of the transmission channel of input reference voltage.
S2 judges whether the signal transmission passage is sent out according to the self-test signal of signal transmission passage output and reference signal
Raw failure.
The voltage value that each signal transmission passage exports can be compared with the reference voltage of input, if signal transmits
The voltage value of channel output is consistent with the reference voltage of input, then the signal transmission passage is normal, i.e., does not break down；If letter
The voltage value of number transmission channel output and the reference voltage of input are inconsistent, then the signal transmission passage is abnormal, that is, breaks down.
It should be noted that the voltage value of the above-mentioned output voltage value for referring to output consistent with the reference voltage of input with
The reference voltage of input is identical, or output voltage value and input reference voltage between meet signal transmission passage it is normal when
Fixed relationship between output signal and input signal.
In one embodiment of the invention, each signal transmission passage is for amplifying and passing the signal of input
It is defeated, wherein the voltage of self-test signal, the reference voltage of reference voltage source and the signal that can be exported according to the signal transmission passage
The magnification ratio of transmission channel judges whether the signal transmission passage breaks down.Specifically, if reference voltage and the signal
The product of the magnification ratio of transmission channel is equal to the voltage of the self-test signal of signal transmission passage output, then can determine whether that the signal passes
It does not break down in defeated channel；If the product of the magnification ratio of reference voltage and the signal transmission passage is logical not equal to signal transmission
The voltage of the self-test signal of road output, then can determine whether that the signal transmission passage breaks down.
Further, the signal that reference signal and each signal transmission passage can be exported by ADC unit shown in Fig. 2
It is AD converted, and each switching switch can be controlled by DSP unit shown in Fig. 2 and switched over, and in the current progress of control
When reference signal is input to corresponding signal transmission passage by the switching switch of switching, transmitted according to the signal after AD conversion logical
The self-test signal of road output and the reference signal after AD conversion judge whether the signal transmission passage breaks down.
Reference signal is input to corresponding signal transmission passage in addition, switching in the switching that control currently switches over
Before, judge that reference signal provides whether module breaks down also according to the reference signal after AD conversion.
In one particular embodiment of the present invention, channel self-test process can include: DSP unit is obtained by ADC unit
The voltage magnitude of the reference voltage source of 1.5V, if voltage magnitude within the scope of 1.48-1.52V, judges that reference voltage source provides
Reference voltage it is normal；Then DSP unit controls switching switch 20 by I/O interface, makes reference voltage source and signal transmission passage
Connection, sensor and signal transmission passage disconnect, and the input terminal of signal transmission passage is switched to 1.5V a reference source benchmark electricity
Potential source；Since the magnification ratio of each signal transmission passage is stored in advance in DSP unit, such as magnification ratio is 2 times,
If the voltage magnitude of the self-test signal for the signal transmission passage output that DSP unit is obtained by ADC unit at this time is 3V, can
Judge that signal transmission passage does not break down, and if the voltage magnitude of self-test signal is not 3V, it can determine whether that signal transmission is logical
It breaks down in road.
Further, after carrying out self-test to signal transmission passage, if it is determined that the signal transmission passage does not break down,
It then can be by controlling the corresponding switching switch of the signal transmission passage for the corresponding signal acquisition module institute of the signal transmission passage
The external signal of acquisition inputs the signal transmission passage, carries out external signal collecting work to control signal acquiring system.Specifically
Ground can control the first stationary contact and the movable contact engagement of the corresponding switching switch of the signal transmission passage, which transmitted
Channel corresponding sensor external signal collected inputs the signal transmission passage, is then believed by ADC unit the outside
It number is AD converted and is inputted DSP unit, realizes the collecting work to the external signal.
The channel self checking method of signal acquiring system according to an embodiment of the present invention provides module by reference signal and provides
Reference signal, and by control switching switch reference signal is input to corresponding signal transmission passage, then according to the letter
The self-test signal and reference signal of number transmission channel output judge whether the signal transmission passage breaks down, and thereby, it is possible to sides
Just effectively detect whether its signal transmission passage breaks down before signal acquiring system is run, so as to guarantee that signal is adopted
Reliable, the efficient operation of collecting system, and the channel self checking method has a wide range of application, additionally it is possible to reduce cost.
Corresponding above-described embodiment, the present invention also propose a kind of non-transitorycomputer readable storage medium.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, is stored thereon with computer program, the program
, it can be achieved that the channel self checking method of the signal acquiring system proposed according to that above embodiment of the present invention when being executed by processor.
Non-transitorycomputer readable storage medium according to an embodiment of the present invention, by the computer journey for executing its storage
Sequence just effectively can detect whether its signal transmission passage breaks down before signal acquiring system is run, so as to protect
Demonstrate,prove reliable, the efficient operation of signal acquiring system.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (15)
1. a kind of channel self-checking unit of signal acquiring system, which is characterized in that the signal acquiring system includes that N number of signal is adopted
Collect module and N number of signal transmission passage, wherein N is the integer more than or equal to 1, and the channel self-checking unit includes:
Reference signal provides module, and the reference signal provides module for providing reference signal；
The first input end of N number of switching switch, each switching switch is correspondingly connected with to a signal acquisition module, Mei Gesuo
The second input terminal for stating switching switch is all connected to the reference signal and provides module, the output end pair of each switching switch
A signal transmission passage should be connected to, wherein the signal acquisition module and signal transmission being connected with the same switching switch are logical
It is corresponding between road；
Control module, the control module is switched over for controlling each switching switch, and is currently cut in control
When the reference signal is input to corresponding signal transmission passage by the switching switch changed, according to signal transmission passage output
Self-test signal and the reference signal judge whether the signal transmission passage breaks down.
2. the channel self-checking unit of signal acquiring system according to claim 1, which is characterized in that wherein, the control
Module, should by controlling the corresponding switching switch of the signal transmission passage when judging that the signal transmission passage does not break down
The corresponding signal acquisition module of signal transmission passage external signal collected inputs the signal transmission passage, to control the letter
Number acquisition system carries out external signal collecting work.
3. the channel self-checking unit of signal acquiring system according to claim 2, which is characterized in that the reference signal mentions
It is benchmark voltage source for module.
4. the channel self-checking unit of signal acquiring system according to claim 3, which is characterized in that each signal passes
Defeated channel is for amplifying and transmitting the signal of input, wherein
The benchmark electricity of the voltage for the self-test signal that the control module is exported according to the signal transmission passage, the reference voltage source
The magnification ratio of pressure and the signal transmission passage judges whether the signal transmission passage breaks down.
5. the channel self-checking unit of signal acquiring system according to claim 4, which is characterized in that the control module exists
The product of the magnification ratio of the reference voltage and the signal transmission passage is equal to the self-test signal of signal transmission passage output
When voltage, judge that the signal transmission passage does not break down, and in the amplification ratio of the reference voltage and the signal transmission passage
When the product of example is not equal to the voltage of the self-test signal of signal transmission passage output, judge that the signal transmission passage breaks down.
6. the channel self-checking unit of signal acquiring system according to any one of claims 1-5, which is characterized in that described
Control module includes:
ADC unit, the ADC unit provided respectively with the reference signal module and N number of signal transmission passage be connected with
The signal of the reference signal and each signal transmission passage output is obtained, the ADC unit is used to believe the benchmark
Number and the signal of each signal transmission passage output be AD converted；
DSP unit, the DSP unit are connected with the ADC unit and N number of switching switch respectively, and the DSP unit is used for
It controls each switching switch to switch over, and the switching switch currently switched in control inputs the reference signal
When to corresponding signal transmission passage, after the self-test signal of the signal transmission passage output after AD conversion and AD conversion
Reference signal judges whether the signal transmission passage breaks down.
7. the channel self-checking unit of signal acquiring system according to claim 6, which is characterized in that the DSP unit exists
Before the reference signal is input to corresponding signal transmission passage by the switching switch that control currently switches over, turn also according to AD
Reference signal after changing judges that the reference signal provides whether module breaks down.
8. a kind of pull-in control system of train, which is characterized in that including signal described according to claim 1 any one of -7
The channel self-checking unit of acquisition system.
9. a kind of train, which is characterized in that the pull-in control system including train according to claim 8.
10. a kind of channel self checking method of signal acquiring system, which is characterized in that the signal acquiring system includes N number of signal
Acquisition module, N number of signal transmission passage, reference signal provide module and N number of switching switch, and the reference signal provides module and uses
In providing reference signal, the first input end of each switching switch is correspondingly connected with to a signal acquisition module, Mei Gesuo
The second input terminal for stating switching switch is all connected to the reference signal and provides module, the output end pair of each switching switch
A signal transmission passage should be connected to, wherein the signal acquisition module and signal transmission being connected with the same switching switch are logical
It is corresponding between road, wherein N is integer more than or equal to 1, the channel self checking method the following steps are included:
It controls the switching switch to switch over, the reference signal is input to the switching switch currently switched over and is corresponded to
Signal transmission passage；
Judge whether the signal transmission passage occurs according to the self-test signal of signal transmission passage output and the reference signal
Failure.
11. the channel self checking method of signal acquiring system according to claim 10, which is characterized in that wherein, judging
When the signal transmission passage does not break down, led to by controlling the corresponding switching switch of the signal transmission passage and transmitting the signal
Road corresponding signal acquisition module external signal collected inputs the signal transmission passage, to control the signal acquiring system
Carry out external signal collecting work.
12. the channel self checking method of signal acquiring system according to claim 11, which is characterized in that the reference signal
Offer module is benchmark voltage source.
13. the channel self checking method of signal acquiring system according to claim 12, which is characterized in that each signal
Transmission channel is for amplifying and transmitting the signal of input to export amplified signal, wherein according to the signal transmission passage
The self-test signal of output and the reference signal judge whether the signal transmission passage breaks down, comprising:
It is passed according to the voltage of self-test signal, the reference voltage of the reference voltage source and the signal of signal transmission passage output
The magnification ratio in defeated channel judges whether the signal transmission passage breaks down.
14. the channel self checking method of signal acquiring system according to claim 13, which is characterized in that
If the product of the magnification ratio of the reference voltage and the signal transmission passage is equal to oneself of signal transmission passage output
The voltage for examining signal, then judge that the signal transmission passage does not break down；
If the product of the magnification ratio of the reference voltage and the signal transmission passage is not equal to signal transmission passage output
The voltage of self-test signal then judges that the signal transmission passage breaks down.
15. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, which is characterized in that the program
The channel self checking method of signal acquiring system described in any one of 0-14 according to claim 1 is realized when being executed by processor.
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