CN210912456U - Urban rail transit steel rail broken rail data monitoring and collecting terminal - Google Patents
Urban rail transit steel rail broken rail data monitoring and collecting terminal Download PDFInfo
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- CN210912456U CN210912456U CN201921723687.6U CN201921723687U CN210912456U CN 210912456 U CN210912456 U CN 210912456U CN 201921723687 U CN201921723687 U CN 201921723687U CN 210912456 U CN210912456 U CN 210912456U
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Abstract
The utility model discloses an urban rail transit rail break data monitoring acquisition terminal, the data acquisition terminal includes power supply circuit, constant current source circuit, controller, power line carrier circuit, rail transmission power control circuit and power acquisition circuit; the constant current source circuit is connected with the steel rail transmission power control circuit and provides a constant current source for the steel rail transmission power control circuit; the steel rail transmission power control circuit is connected with the corresponding steel rail monitoring subinterval and used for generating a setting signal to the corresponding steel rail monitoring subinterval; the steel rail transmission power control circuit comprises a PWM control circuit used for generating a set signal for the steel rail; the power acquisition circuit acquires the transmitting power in real time, and performs data interaction on the acquired transmitting power and the transmitting terminal in a power line carrier mode at set cycle intervals through the power line carrier circuit to transmit information data of the transmitting terminal. The utility model discloses can gather the data whether disconnected rail of urban subway rail in real time, be favorable to judging whether there is the disconnected rail condition, strong, the reliability of instantaneity is high.
Description
Technical Field
The utility model belongs to the technical field of the track rail transit, a data acquisition device is related to, especially, relate to a broken rail data monitoring acquisition terminal of urban rail transit rail.
Background
With the adoption of the CBTC system in urban rail transit, a rail circuit is not used any more, and the research on a real-time rail-breaking detection method in the future becomes more important and urgent. At present, the methods mainly adopted at home and abroad are as follows: the method comprises a traction reflux real-time rail break detection method, a quasi-rail circuit real-time rail break detection method, an optical fiber real-time rail break detection method, a stress real-time rail break detection method, a sound wave real-time rail break detection method and the like.
Performance comparison table for various real-time rail break detection methods
Because the running density of the urban rail transit train is far greater than that of the state railway, the time for the state railway to run the train again in a semi-automatic block interval needing rail break monitoring is at least more than 6 minutes, and the time between two trains in the busiest urban rail transit time interval is within 2 minutes. This cannot be achieved by using a method in which one interval is used as a monitoring unit, and the collected track bed data is not enough to ensure that the false alarm is not generated. The conventional common rail breakage detection mode cannot meet the detection requirement of the urban rail on rail breakage.
In view of the above, there is an urgent need to design a new rail break data acquisition method to overcome the above-mentioned defects of the existing acquisition method.
SUMMERY OF THE UTILITY MODEL
The utility model provides a broken rail data monitoring acquisition terminal of urban rail transit rail can gather the data whether broken rail of urban subway rail in real time, is favorable to judging whether there is the broken rail condition, and strong, the reliability is high in the real-time.
For solving the technical problem, according to the utility model discloses an aspect adopts following technical scheme:
a monitoring and collecting terminal for urban rail transit steel rail broken rail data comprises a power supply circuit, a constant current source circuit, a controller, a power line carrier circuit, a steel rail transmission power control circuit and a power collecting circuit;
the controller is respectively connected with the power line carrier circuit, the steel rail transmission power circuit and the power acquisition circuit, the power supply circuit respectively provides electric energy for the constant current source circuit, the controller, the power line carrier circuit, the steel rail transmission power circuit and the power acquisition circuit, and a power line is connected between the power supply circuit and the power line carrier circuit;
the constant current source circuit is used for outputting current in a set range, the output end of the constant current source circuit is connected with the input end of the steel rail transmission power control circuit, and the steel rail transmission power control circuit is connected with the corresponding steel rail monitoring sub-interval and is used for controlling the current output by the constant current source circuit to be transmitted to the steel rail monitoring sub-interval;
the power acquisition circuit is connected with the steel rail transmission power control circuit and used for acquiring transmission power in real time, and performing data interaction on the acquired transmission power and the sending terminal in a power line carrier mode at set cycle intervals through the power line carrier circuit to transmit information data of the power acquisition circuit.
As an embodiment of the present invention, the collection terminal includes a communication module for communicating with the server.
As an embodiment of the present invention, the collection terminal directly communicates with the server, or communicates with the server through a data transceiver terminal.
The beneficial effects of the utility model reside in that: the utility model provides a broken rail data monitoring acquisition terminal of urban rail transit rail can gather the data whether broken rail of urban subway rail in real time, is favorable to judging whether there is the broken rail condition, and strong, the reliability is high in the real-time.
Drawings
Fig. 1 is a schematic diagram of the components of the acquisition terminal in an embodiment of the present invention.
Fig. 2 is another schematic diagram of the acquisition terminal according to an embodiment of the present invention.
Fig. 3 is a schematic circuit diagram of a PWM control circuit according to an embodiment of the present invention.
Fig. 4 is a schematic circuit diagram of a constant current source circuit according to an embodiment of the present invention.
Fig. 5 is a schematic circuit diagram of a power acquisition circuit according to an embodiment of the present invention.
Fig. 6 is a schematic circuit diagram of a controller according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
For further understanding of the present invention, preferred embodiments of the present invention will be described below with reference to examples, but it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the claims of the present invention.
The description in this section is for exemplary embodiments only, and the present invention is not limited to the scope of the embodiments described. The same or similar prior art means and some technical features of the embodiments are mutually replaced and are also within the scope of the description and the protection of the invention.
In the specification, the connection may be a direct connection or an indirect connection through other components. The former acquisition terminal refers to the preceding acquisition terminal (i-1 st acquisition terminal) of the current acquisition terminal (i-th acquisition terminal) among the plurality of acquisition terminals arranged in the set order, and the former acquisition terminal refers to the preceding two acquisition terminals (i-2 nd acquisition terminals) of the current acquisition terminal (i-th acquisition terminal) among the plurality of acquisition terminals arranged in the set order.
The utility model discloses an urban rail transit rail break data monitoring and collecting terminal, and figure 1 is a schematic diagram of the collecting terminal in an embodiment of the utility model; referring to fig. 1, in an embodiment of the present invention, the data acquisition terminal includes a power circuit 1, a constant current source circuit 2, a controller 3, a power line carrier circuit 4, a rail transmission power control circuit 5, and a power acquisition circuit 6.
The controller 3 is respectively connected with the power line carrier circuit 4, the steel rail transmission power circuit 5 and the power acquisition circuit 6, the power supply circuit 1 respectively provides electric energy for the constant current source circuit 2, the controller 3, the power line carrier circuit 4, the steel rail transmission power circuit 5 and the power acquisition circuit 6, and a power line 7 is connected between the power supply circuit 1 and the power line carrier circuit 4.
The constant current source circuit 2 is connected with a steel rail transmission power control circuit 5, and the constant current source circuit 2 is used for outputting current in a set range; and the steel rail transmission power control circuit 5 is connected with the corresponding steel rail monitoring sub-interval and is used for controlling the current output by the constant current source circuit to be transmitted to the steel rail monitoring sub-interval. The constant current source circuit 2 is further configured to obtain power for setting a rail monitoring subinterval, and when the power in the rail monitoring subinterval is greater than a set threshold, the constant current source circuit 2 is turned off for a set time, and then outputs a set low current.
Fig. 4 is a schematic circuit diagram of a constant current source circuit according to an embodiment of the present invention; referring to fig. 4, in an embodiment of the present invention, a constant current source circuit as described in fig. 4 is adopted. As shown in fig. 4, the constant current source circuit further includes a transmission power amplifying circuit and a detection circuit. The constant current source circuit specifically includes a fourth chip a U4A, a sixth triode Q6, an eighth triode Q8, a seventh diode D7, a twelfth triode D10, a plurality of capacitors, and a plurality of resistors, and the specific connection relationship of each element can be referred to the description of fig. 4. Certainly, the constant current source circuit is the technique that the field is comparatively general, can be according to the utility model discloses well constant current source circuit's functional design other circuit structure.
In an embodiment of the present invention, the rail transmission power control circuit 5 includes a PWM control circuit for generating the set PWM signal for the rail. The utility model discloses an in the embodiment, rail power control circuit 5 includes PWM control circuit, and PWM control circuit produces 500HZ ~ 10KHZ signal output to the rail on, on transmitting terminal produced 500HZ ~ 10KHZ signal output to the rail through PWM control circuit. Fig. 3 is a schematic circuit diagram of a PWM control circuit according to an embodiment of the present invention; referring to fig. 3, in an embodiment of the present invention, the PWM control circuit includes a frequency selecting circuit, a PWM push-pull circuit and a coupling circuit, and the PWM push-pull circuit is connected to the frequency selecting circuit and the coupling circuit respectively; the PWM control circuit can be seen in the description of fig. 3.
The power acquisition circuit 6 is connected with the steel rail transmission power control circuit 5, acquires transmission power in real time, performs data interaction with other acquisition terminals 3 and the sending terminal 5 through the power line carrier circuit 4 in a power line carrier mode at set cycle intervals, and transmits information data of the power acquisition circuit.
Fig. 5 is a schematic circuit diagram of a power acquisition circuit according to an embodiment of the present invention; referring to fig. 5, in an embodiment of the present invention, a power collecting circuit as described in fig. 5 is adopted. As shown in fig. 5, the power collecting circuit includes a fourth B chip U4B, a ninth diode D9, a sixth capacitor C6 and a plurality of resistors, and the connection relationship of the elements can be seen in fig. 5.
In an embodiment of the present invention, the constant current source circuit 2 is connected to the controller 3, the controller 3 is connected to the power acquisition circuit 6, and the controller 3 acquires the power for setting the rail monitoring subinterval through the power acquisition circuit 6 and sends it to the constant current source circuit 2; because the power of the set steel rail monitoring sub-interval is obtained, when the power in the steel rail monitoring sub-interval is larger than the set threshold value, the constant current source circuit 2 is turned off for the set time (the turn-off time can be set according to requirements, such as several seconds, several milliseconds and even microsecond), and then the set low current is output. And the transmission power of the steel rail monitoring subinterval is greater than a set first threshold value, which indicates that a short circuit condition occurs, and outputs a set low current.
Fig. 6 is a schematic circuit diagram of a controller according to an embodiment of the present invention; referring to fig. 6, in an embodiment of the present invention, the controller and the peripheral circuit shown in fig. 6 are adopted. In one embodiment, the controller chip is selected from the model of PIC18F45K 80.
The utility model discloses an in the embodiment, acquisition terminal includes disconnected rail judgment module for whether there is disconnected rail point between the corresponding rail monitoring subinterval according to the data judgement of gathering. If the acquired data is in a set threshold interval, the broken rail judgment module judges that no broken rail point exists in the steel rail monitoring sub-interval corresponding to the acquisition terminal; and if the acquired data is not in the set threshold interval for the set times, the broken rail judgment module judges that a broken rail point exists in the steel rail monitoring sub-interval corresponding to the acquisition terminal.
Fig. 2 is another schematic diagram of the acquisition terminal according to an embodiment of the present invention; referring to fig. 2, in an embodiment of the present invention, the collection terminal includes a communication circuit 8 for communicating with the server. The acquisition terminal is directly communicated with the server or communicated with the server through a data receiving and transmitting terminal. At this time, the acquisition terminal has not only an acquisition function but also a data transmission function.
The power line carrier circuit utilizes a power line carrier driving chip to realize power line carrier communication, and the technology belongs to the prior art in the field and is not a core improvement of the application, and is not described herein again.
The utility model discloses still disclose an urban rail transit rail break data monitoring collection system, data monitoring collection system includes following step:
dividing a steel rail to be monitored into at least one steel rail monitoring interval, wherein each steel rail monitoring interval comprises at least two steel rail monitoring sub-intervals, and each steel rail monitoring sub-interval forms a loop and is used as a load; at least two acquisition terminals are distributed in each steel rail monitoring interval, and each acquisition terminal is arranged in a corresponding steel rail monitoring sub-interval;
each acquisition terminal transmits power to a corresponding steel rail monitoring sub-interval, acquires load power and transmits the load power to a corresponding sending terminal in a carrier mode by taking a power line as a carrier; the acquisition terminal generates 500 HZ-10 KHZ signals to the steel rail through the PWM control circuit, the transmission power is controlled through the steel rail transmission power control circuit, and the transmission power is acquired in real time through the power acquisition circuit.
In an embodiment of the present invention, the collecting method further includes: and performing data interaction with other acquisition terminals or/and the sending terminal at set cycle intervals in a power line carrier mode through the power line carrier circuit, and transmitting information data per se.
In an embodiment of the present invention, the collecting method further includes a rail break judging step, which judges whether a rail break point exists in the corresponding rail monitoring sub-section according to the collected data; if the acquired data is in a set threshold interval, the broken rail judgment module judges that no broken rail point exists in the steel rail monitoring sub-interval corresponding to the acquisition terminal; and if the acquired data is not in the set threshold interval for the set times, the broken rail judgment module judges that a broken rail point exists in the steel rail monitoring sub-interval corresponding to the acquisition terminal.
To sum up, the utility model provides an urban rail transit rail break data monitoring acquisition terminal can gather the data whether the rail breaks of urban subway rail in real time, is favorable to judging whether there is the rail break condition, and the real-time strong, the reliability is high.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The description and applications of the present invention are illustrative and are not intended to limit the scope of the invention to the embodiments described above. Variations and modifications of the embodiments disclosed herein are possible, and alternative and equivalent various components of the embodiments will be apparent to those skilled in the art. It will be clear to those skilled in the art that the present invention may be embodied in other forms, structures, arrangements, proportions, and with other components, materials, and parts, without departing from the spirit or essential characteristics thereof. Other variations and modifications of the embodiments disclosed herein may be made without departing from the scope and spirit of the present invention.
Claims (3)
1. A monitoring and collecting terminal for urban rail transit steel rail broken rail data is characterized by comprising a power supply circuit, a constant current source circuit, a controller, a power line carrier circuit, a steel rail transmission power control circuit and a power collecting circuit;
the controller is respectively connected with the power line carrier circuit, the steel rail transmission power circuit and the power acquisition circuit, the power supply circuit respectively provides electric energy for the constant current source circuit, the controller, the power line carrier circuit, the steel rail transmission power circuit and the power acquisition circuit, and a power line is connected between the power supply circuit and the power line carrier circuit;
the constant current source circuit is used for outputting current in a set range, the output end of the constant current source circuit is connected with the input end of the steel rail transmission power control circuit, and the steel rail transmission power control circuit is connected with the corresponding steel rail monitoring sub-interval and is used for controlling the current output by the constant current source circuit to be transmitted to the steel rail monitoring sub-interval;
the power acquisition circuit is connected with the steel rail transmission power control circuit and used for acquiring transmission power in real time, and performing data interaction on the acquired transmission power and the sending terminal in a power line carrier mode at set cycle intervals through the power line carrier circuit to transmit information data of the power acquisition circuit.
2. The urban rail transit steel rail broken rail data monitoring and collecting terminal according to claim 1, characterized in that:
the acquisition terminal comprises a communication module used for communicating with the server.
3. The urban rail transit steel rail broken rail data monitoring and collecting terminal according to claim 2, characterized in that:
the acquisition terminal is directly communicated with the server or communicated with the server through a data receiving and transmitting terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921723687.6U CN210912456U (en) | 2019-10-15 | 2019-10-15 | Urban rail transit steel rail broken rail data monitoring and collecting terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921723687.6U CN210912456U (en) | 2019-10-15 | 2019-10-15 | Urban rail transit steel rail broken rail data monitoring and collecting terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210912456U true CN210912456U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921723687.6U Active CN210912456U (en) | 2019-10-15 | 2019-10-15 | Urban rail transit steel rail broken rail data monitoring and collecting terminal |
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| Country | Link |
|---|---|
| CN (1) | CN210912456U (en) |
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2019
- 2019-10-15 CN CN201921723687.6U patent/CN210912456U/en active Active
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