CN105467236A - Digital quantity signal monitoring device - Google Patents
Digital quantity signal monitoring device Download PDFInfo
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- CN105467236A CN105467236A CN201510818678.5A CN201510818678A CN105467236A CN 105467236 A CN105467236 A CN 105467236A CN 201510818678 A CN201510818678 A CN 201510818678A CN 105467236 A CN105467236 A CN 105467236A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a digital quantity signal monitoring device. The device comprises a digital quantity signal processing unit, a power supply voltage processing unit, a V/F conversion unit and a processing unit, wherein the digital quantity signal processing unit is used for carrying out first signal processing on a collected digital quantity signal and sending a first voltage signal obtained through processing to the processing unit; the power supply voltage processing unit is used for carrying out second signal processing on a collected power supply voltage signal and sending a first power supply voltage signal obtained through processing to the V/F conversion unit; the V/F conversion unit is used for converting the first power supply voltage signal into a square wave frequency signal and sending the square wave frequency signal to the processing unit; the processing unit is used for converting the square wave frequency signal into a second voltage signal and storing, storing the first voltage signal, determining signal quality of the first voltage signal according to the second voltage signal, and sending a determination result, the first voltage signal and the second voltage signal to a master control apparatus. The device can monitor signal quality of the digital quantity signal. Monitoring performance of the digital quantity signal monitoring device and fault detection efficiency of the digital quantity signal are increased.
Description
Technical field
The present invention relates to train signal monitoring field, particularly relate to a kind of digital quantity signal monitoring device.
Background technology
Society, train has become the requisite vehicles in people's life, the safety problem of train also pay close attention to by increasing people.Train has many by the device ensured for the purpose of safe train operation, train running monitoring device is exactly wherein a kind of.
Train running monitoring device is a kind of train speed control device, first the digital quantity signal that train exports is carried out step-down by this device, then photoelectric isolation technology is adopted to isolate digital quantity signal in the mode of on-off model, universal input/output GPIO the pin recycling microprocessor afterwards gathers digital quantity signal, finally externally sends to the master control set of train running monitoring device to process by microprocessor-based control general ability area network bus CAN the digital quantity signal collected.
The digital quantity signal of collection is only transferred to master control set by existing train running monitoring device, and the validity (being also signal quality) for the digital quantity signal exported cannot effectively judge; In addition, because the output quantity situation of digital quantity signal is sent to master control unit in the mode of open and close two states by train running monitoring device, cannot judge that digital quantity signal is in the situation between switch two states, namely cannot carry out record to the fluctuation situation of digital quantity signal, thus cause existing train running monitoring device also cannot effectively be analyzed by the fault of state to the follow-up generation of train of the digital quantity signal collected.
Therefore, how providing a kind of can be the problem that those skilled in the art need to solve at present to the digital quantity signal monitoring device that signal quality judges, Monitoring Performance is high of digital quantity signal exported effectively.
Summary of the invention
The object of this invention is to provide a kind of digital quantity signal monitoring device, this device can be monitored the signal quality of digital quantity signal, improves the Monitoring Performance of digital quantity signal monitoring device, also can improve the fault detection efficiency of digital quantity signal.
For solving the problems of the technologies described above, the invention provides a kind of digital quantity signal monitoring device, comprising:
Digital quantity signal processing unit, for gathering digital quantity signal, and carrying out the first signal transacting to described digital quantity signal, obtaining the first voltage signal, and described first voltage signal is sent to processing unit;
Supply voltage processing unit, for gathering power supply voltage signal, and carrying out secondary signal process to described power supply voltage signal, obtaining the first power supply voltage signal, and described first power supply voltage signal is sent to voltage/frequency V/F converter unit;
Described V/F converter unit, for described first power supply voltage signal is converted to square wave frequency signal, and is sent to described processing unit by described square wave frequency signal;
Described processing unit, for described square wave frequency signal is converted to the second voltage signal, store described first voltage signal and described second voltage signal, judge according to the signal quality of described second voltage signal to described first voltage signal, and judged result, described first voltage signal and described second voltage signal are sent to the master control set of described digital quantity signal monitoring device by bus.
Preferably, described processing unit comprises:
CPU, for described square wave frequency signal is converted to described second voltage signal, and judge according to the signal quality of described second voltage signal to described first voltage signal, and described judged result, described first voltage signal and described second voltage signal are sent to the described master control set of described digital quantity signal monitoring device;
Storage unit, for storing described first voltage signal and described second voltage signal.
Preferably, described bus is FlexRay bus.
Preferably, described digital quantity signal processing unit comprises:
Amplitude limit voltage stabilizing processing unit, for gathering described digital quantity signal, carrying out amplitude limit voltage stabilizing process to described digital quantity signal, obtaining amplitude limit digital quantity signal, and described amplitude limit digital quantity signal is sent to current limliting processing unit;
Described current limliting processing unit, for carrying out current limliting process to described amplitude limit digital quantity signal, obtains current limliting digital quantity signal, and described current limliting digital quantity signal is sent to the first isolation processing unit;
Described first isolation processing unit, for carrying out the first isolation processing to described current limliting digital quantity signal, obtains described first voltage signal, and described first voltage signal is sent to described processing unit.
Preferably, described supply voltage processing unit comprises:
Step-down processing unit, for gathering described power supply voltage signal, carrying out step-down process to described power supply voltage signal, obtaining voltage dropping power supply voltage signal, and described voltage dropping power supply voltage signal is sent to the second isolation processing unit;
Described second isolation processing unit, for carrying out the second isolation processing to described voltage dropping power supply voltage signal, obtains insulating power supply voltage signal, and described insulating power supply voltage signal is sent to magnification processing;
Described magnification processing, for carrying out amplification process to described insulating power supply voltage signal, obtains described first power supply voltage signal, and described first power supply voltage signal is sent to described V/F converter unit.
Preferably, the voltage of described power supply voltage signal is 110V, and the voltage of described digital quantity signal is 110V.
Preferably, described digital quantity signal is 16 railway digital amount signals.
Preferably, described 16 railway digital amount signals comprise:
Whistle signal, automatic passing over of neutral section signal.
Preferably, also comprise:
Self-checking function circuit, for feeding back the functional status of acquisition channel corresponding to described digital quantity signal to described processing unit.
Preferably, also comprise:
RS232 communication interface, for safeguarding described CPU and upgrading.
The invention provides a kind of digital quantity signal monitoring device, this device comprises digital quantity signal processing unit, supply voltage processing unit, V/F converter unit and processing unit.Device provided by the invention not only can monitor digital quantity signal and store, can also monitor power supply voltage signal and store, and judge according to the validity of power supply voltage signal to digital quantity signal, namely this device is by the Real-Time Monitoring situation to power supply voltage signal, can understand the signal quality of the digital quantity signal that the corresponding time collects.In addition, due to this digital quantity signal monitoring device power supply voltage signal monitored and preserve, have recorded the whole fluctuation situation of digital quantity signal, when digital quantity signal breaks down, the situation of the power supply voltage signal that this device can store by reference to processing unit, judges trouble spot and the failure cause of digital quantity signal.
Therefore, this device can be monitored the signal quality of digital quantity signal, improves the Monitoring Performance of digital quantity signal monitoring device, also improves the fault detection efficiency of digital quantity signal simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in prior art and embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is digital quantity signal monitoring device structural drawing in prior art;
Fig. 2 is the structure diagram of a kind of digital quantity signal monitoring device provided by the invention;
Fig. 3 is the structural representation of another kind of digital quantity signal monitoring device provided by the invention.
Embodiment
Core of the present invention is to provide a kind of digital quantity signal monitoring device, and this device can be monitored the signal quality of digital quantity signal, improves the Monitoring Performance of digital quantity signal monitoring device, also can improve the fault detection efficiency of digital quantity signal.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
Shown in Figure 2, Fig. 2 is the structural representation of a kind of digital quantity signal monitoring device provided by the invention.
This device has magnitude of voltage monitoring function, adopts the 5V DC power supply of standard, comprises digital quantity signal processing unit 11, supply voltage processing unit 12, V/F converter unit 13 and processing unit 14.Wherein:
Digital quantity signal processing unit 11, for gathering digital quantity signal, and carrying out the first signal transacting to digital quantity signal, obtaining the first voltage signal, and the first voltage signal is sent to processing unit 14;
Supply voltage processing unit 12, for gathering power supply voltage signal, and carrying out secondary signal process to power supply voltage signal, obtaining the first power supply voltage signal, and the first power supply voltage signal is sent to voltage/frequency V/F converter unit 13;
V/F converter unit 13, for the first power supply voltage signal is converted to square wave frequency signal, and is sent to processing unit 14 by square wave frequency signal;
Processing unit 14, for square wave frequency signal is converted to the second voltage signal, store the first voltage signal and the second voltage signal, judge according to the signal quality of the second voltage signal to the first voltage signal, and judged result, the first voltage signal and the second voltage signal are sent to the master control set of digital quantity signal monitoring device by bus.
Be more than a kind of digital quantity signal monitoring device provided by the invention, this device comprises digital quantity signal processing unit, supply voltage processing unit, V/F converter unit and processing unit.Device provided by the invention not only can monitor digital quantity signal and store, can also monitor power supply voltage signal and store, and judge according to the validity of power supply voltage signal to digital quantity signal, namely this device is by the Real-Time Monitoring situation to power supply voltage signal, can understand the signal quality of the digital quantity signal that the corresponding time collects.In addition, due to this digital quantity signal monitoring device power supply voltage signal monitored and preserve, have recorded the whole fluctuation situation of digital quantity signal, when digital quantity signal breaks down, the situation of the power supply voltage signal that this device can store by reference to processing unit, judges trouble spot and the failure cause of digital quantity signal.
Therefore, this device can be monitored the signal quality of digital quantity signal, improves the Monitoring Performance of digital quantity signal monitoring device, also improves the fault detection efficiency of digital quantity signal simultaneously
Embodiment two
Shown in Figure 3, Fig. 3 is the structural representation of another kind of digital quantity signal monitoring device provided by the invention.
Based on device disclosed in embodiment one, as preferably, digital quantity signal processing unit 11 here comprises:
Amplitude limit voltage stabilizing processing unit 111, for gathering digital quantity signal, carrying out amplitude limit voltage stabilizing process to digital quantity signal, obtaining amplitude limit digital quantity signal, and amplitude limit digital quantity signal is sent to current limliting processing unit 112; Current limliting processing unit 112, for carrying out current limliting process to amplitude limit digital quantity signal, obtains current limliting digital quantity signal, and current limliting digital quantity signal is sent to the first isolation processing unit 113; First isolation processing unit 113, for carrying out the first isolation processing to current limliting digital quantity signal, obtains the first voltage signal, and the first voltage signal is sent to processing unit 14.
Wherein, first isolation processing unit 113 can be high-precision linear photoelectrical coupler, after this high-precision linear photoelectrical coupler carries out isolation collection to current limliting digital quantity signal, export the on-off model of weak electric pressure from secondary end to processing unit 14, this on-off model is the first voltage signal.Certainly, the first isolation processing unit 113 is not limited to high-precision linear photoelectrical coupler, as long as the device that can realize above function is all within protection scope of the present invention.
In addition, current limliting processing unit 112 here can be current-limiting resistance, and concrete resistance value can be determined according to actual conditions, and the concrete resistance value of the present invention to current-limiting resistance does not limit.
As preferably, supply voltage processing unit 12 here comprises:
Step-down processing unit 121, for gathering power supply voltage signal, carrying out step-down process to power supply voltage signal, obtaining voltage dropping power supply voltage signal, and voltage dropping power supply voltage signal is sent to the second isolation processing unit 122; Second isolation processing unit 122, for carrying out the second isolation processing to voltage dropping power supply voltage signal, obtains insulating power supply voltage signal, and insulating power supply voltage signal is sent to magnification processing 123; Magnification processing 123, for carrying out amplification process to insulating power supply voltage signal, obtains the first power supply voltage signal, and the first power supply voltage signal is sent to V/F converter unit 13.
Known further, here the second isolation processing unit 122 can adopt identical device with the first isolation processing unit 113, high-precision linear photoelectrical coupler can be thought, certain second isolation processing unit 122 also can adopt other isolating devices, and concrete which kind of device that adopts can be determined according to actual conditions.
As preferably; here step-down processing unit 121 can be high-precision resistor network; concrete distribution of resistance and resistance value can be determined according to actual conditions; certainly step-down processing unit 121 is here not limited to as high-precision resistor network, as long as the decompression device that can realize the object of the invention is all within protection scope of the present invention.
Simultaneously, here magnification processing 123 can be operational amplifier, which kind of operational amplifier of concrete employing can be determined according to actual conditions, the type of the present invention to operational amplifier does not limit, and magnification processing 123 of the present invention is also not limited to operational amplifier, as long as selected amplifying device can realize object of the present invention.
As preferably, processing unit 14 comprises:
CPU141, for gathering the first voltage signal and square wave frequency signal, and square wave frequency signal is converted to the second voltage signal, and judge according to the signal quality of the second voltage signal to the first voltage signal, and judged result, the first voltage signal and the second voltage signal are sent to the master control set of digital quantity signal monitoring device; Storage unit 142, for storing the first voltage signal and the second voltage signal.
Wherein, the GPIO pin of CPU141 is for gathering the first voltage signal and square wave frequency signal.
In addition, here storage unit 142 is FLASH memory circuit, first voltage signal and the second voltage signal can be carried out real-time storage, certainly, FLASH memory circuit is adopted to be only preferred version of the present invention, staff can select suitable memory circuit according to actual conditions, and the present invention does not limit this.
Known further; here bus is FlexRay bus; the FlexRay bus of two redundancy can by the overseas broadcast of judged result, the first voltage signal and the second voltage signal safety; namely the master control set of digital quantity signal monitoring device can be transferred to; certainly; here bus is not limited in FlexRay bus, these are only preferred version of the present invention, as long as the bus that can realize the object of above-mentioned secure communication is all within protection scope of the present invention.
Based on device disclosed in embodiment one, as preferably, the present invention also comprises:
Self-checking function circuit 15, for the functional status to acquisition channel corresponding to CPU141 feedback digital amount signal.
RS232 communication interface 16, for safeguarding CPU141 and upgrading.
It can thus be appreciated that the present invention can pass through RS232 communication interface 16, safeguards CPU141, and can modify to the program in CPU141 according to different needs or reset, realize the function upgrading of CPU141.
LED light, can show the ruuning situation of this device, the working condition of the working condition of bus and acquisition channel corresponding to digital quantity signal.Such as, when this plant running is normal, LED light is bright; When this device is out of service, LED light is gone out; During this plant running fault, LED light is glimmered.
Each state of the LED light corresponding to running status of this device is only a kind of preferred version provided by the invention above, staff can according to the state of LED light corresponding under each state of actual conditions sets itself digital quantity monitoring device, can also change the number of LED light and the color of LED light, the present invention does not all limit this simultaneously.
As preferably, digital quantity signal is here 16 railway digital amount signals, and comprises the digital quantity signal such as whistle signal, automatic passing over of neutral section signal.
In addition, the voltage of power supply voltage signal here can be 110V, and now the voltage of digital quantity signal is also 110V.
The present embodiment, on the basis of embodiment one, also add self-checking function circuit, RS232 communication interface and LED light.Wherein, self-checking function circuit can be monitored by the acquisition channel corresponding to digital quantity signal, and feeds back the functional status of each acquisition channel to CPU in time, ensure that the validity of digital quantity signal, improves the faults itself monitoring efficiency of digital quantity monitoring device; RS232 communication interface can be used for safeguarding CPU and upgrading, and ensure that the normal operation of CPU; LED light can show the ruuning situation of whole device, when fault is occurred, staff can Timeliness coverage, and the present invention adopts the FlexRay bus of two redundancy to carry out communication, improve the reliability of external communication, digital quantity signal simultaneously in the present embodiment is 16 railway digital amount signals, compare 8 railway digital amount signals of the prior art, the present invention can monitor from more aspect locomotive digital quantity signal, more fully reacts the ruuning situation of locomotive; And the voltage of the present embodiment to digital quantity signal and power supply voltage signal limits, it has all been set to 110V, when only having the voltage of digital quantity signal identical with the voltage of power supply voltage signal, the validity that can be judged digital quantity signal by the power supply voltage signal of Real-Time Monitoring can be ensured, and pass through the fluctuation situation of the power supply voltage signal stored, judge the failure condition of digital quantity signal.
In this manual, the relational terms of such as first and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising key element and also there is other identical element.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a digital quantity signal monitoring device, is characterized in that, comprising:
Digital quantity signal processing unit, for gathering digital quantity signal, and carrying out the first signal transacting to described digital quantity signal, obtaining the first voltage signal, and described first voltage signal is sent to processing unit;
Supply voltage processing unit, for gathering power supply voltage signal, and carrying out secondary signal process to described power supply voltage signal, obtaining the first power supply voltage signal, and described first power supply voltage signal is sent to voltage/frequency V/F converter unit;
Described V/F converter unit, for described first power supply voltage signal is converted to square wave frequency signal, and is sent to described processing unit by described square wave frequency signal;
Described processing unit, for described square wave frequency signal is converted to the second voltage signal, store described first voltage signal and described second voltage signal, judge according to the signal quality of described second voltage signal to described first voltage signal, and judged result, described first voltage signal and described second voltage signal are sent to the master control set of described digital quantity signal monitoring device by bus.
2. device according to claim 1, is characterized in that, described processing unit comprises:
CPU, for described square wave frequency signal is converted to described second voltage signal, and judge according to the signal quality of described second voltage signal to described first voltage signal, and described judged result, described first voltage signal and described second voltage signal are sent to the described master control set of described digital quantity signal monitoring device;
Storage unit, for storing described first voltage signal and described second voltage signal.
3. device according to claim 1, is characterized in that, described bus is FlexRay bus.
4. device according to claim 1, is characterized in that, described digital quantity signal processing unit comprises:
Amplitude limit voltage stabilizing processing unit, for gathering described digital quantity signal, carrying out amplitude limit voltage stabilizing process to described digital quantity signal, obtaining amplitude limit digital quantity signal, and described amplitude limit digital quantity signal is sent to current limliting processing unit;
Described current limliting processing unit, for carrying out current limliting process to described amplitude limit digital quantity signal, obtains current limliting digital quantity signal, and described current limliting digital quantity signal is sent to the first isolation processing unit;
Described first isolation processing unit, for carrying out the first isolation processing to described current limliting digital quantity signal, obtains described first voltage signal, and described first voltage signal is sent to described processing unit.
5. the device according to any one of claim 1-4, is characterized in that, described supply voltage processing unit comprises:
Step-down processing unit, for gathering described power supply voltage signal, carrying out step-down process to described power supply voltage signal, obtaining voltage dropping power supply voltage signal, and described voltage dropping power supply voltage signal is sent to the second isolation processing unit;
Described second isolation processing unit, for carrying out the second isolation processing to described voltage dropping power supply voltage signal, obtains insulating power supply voltage signal, and described insulating power supply voltage signal is sent to magnification processing;
Described magnification processing, for carrying out amplification process to described insulating power supply voltage signal, obtains described first power supply voltage signal, and described first power supply voltage signal is sent to described V/F converter unit.
6. device according to claim 1, is characterized in that, the voltage of described power supply voltage signal is 110V, and the voltage of described digital quantity signal is 110V.
7. device according to claim 1, is characterized in that, described digital quantity signal is 16 railway digital amount signals.
8. device according to claim 7, is characterized in that, described 16 railway digital amount signals comprise:
Whistle signal, automatic passing over of neutral section signal.
9. device according to claim 1, is characterized in that, also comprises:
Self-checking function circuit, for feeding back the functional status of acquisition channel corresponding to described digital quantity signal to described processing unit.
10. device according to claim 2, is characterized in that, also comprises:
RS232 communication interface, for safeguarding described CPU and upgrading.
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| CN105467236B (en) | 2018-01-26 |
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Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee before: ZHUZH CSR TIMES ELECTRIC Co.,Ltd. |
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