CN210376540U - Online monitoring system of hump length measuring equipment - Google Patents
Online monitoring system of hump length measuring equipment Download PDFInfo
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- CN210376540U CN210376540U CN201920923808.5U CN201920923808U CN210376540U CN 210376540 U CN210376540 U CN 210376540U CN 201920923808 U CN201920923808 U CN 201920923808U CN 210376540 U CN210376540 U CN 210376540U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
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- 230000001052 transient effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 7
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- 238000004458 analytical method Methods 0.000 abstract description 2
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Abstract
The utility model provides a hump length measuring equipment on-line monitoring system, through setting up current detection circuit and voltage detection circuit, can be continuous, monitor hump length measuring equipment send end voltage, send end electric current and receive end voltage in real time, current and voltage analysis length measuring equipment running state that obtains according to detecting, whether trouble and fault location, adopt the algorithm to wherein receive end voltage, convert the idle length information into in real time, through the abnormal fluctuation of idle length, thereby the position of accurate locking not hard up rail line that continues, the utility model discloses the precision is high, multiple functional, satisfy the electric affair section, hump workshop workspace to the management of hump station length measuring equipment and on-the-spot maintenance's actual need, compensatied at present internal vacancy about hump length measuring equipment on-line monitoring.
Description
Technical Field
The utility model relates to a railway rails monitoring field, concretely relates to hump length measuring equipment on-line monitoring system.
Background
Along with the gradual realization of hump automation in marshalling stations in China, the daily maintenance problem of hump signal equipment is gradually outstanding, and the daily maintenance of length measuring equipment in the signal equipment in the prior art mainly has the following outstanding problems:
1. when length measuring equipment fails, only the voltage value of an indoor receiving end recorded by a hump control system after passing through a filter is lack of sending end voltage and sending end current monitoring and indoor distributing board receiving end voltage monitoring at an indoor distributing board, so that indoor or outdoor faults cannot be quickly positioned when the equipment fails, and field troubleshooting is inconvenient.
2. The maintenance of the outdoor steel rail connecting line requires that workers in a work area periodically go outdoors to check the steel rail connecting line one by one, so as to ensure that the steel rail connecting line is free from looseness. Because the number of outdoor steel rail connecting lines is large, the outdoor distance is long, and the outdoor steel rail connecting lines are required to be carried out in a skylight point, a large amount of manpower is required to be consumed, and errors are easy to occur in detection results.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough to a hump length measuring equipment on-line monitoring system is provided, concrete scheme is as follows:
an online monitoring system of a hump length measuring device comprises a processor, a current detection circuit and a voltage detection circuit;
the voltage detection circuit is provided with a first fuse, a second fuse, a first resistor, a second resistor, a TVS (transient voltage suppressor) tube, an electromagnetic isolator, a first operational amplifier and a second operational amplifier;
one end of the first fuse is used for being connected with external negative input, the other end of the first fuse is connected with one end of a first resistor, the other end of the first resistor is connected with the first end of the TVS tube, the second end of the TVS tube is connected with one end of a second resistor, the other end of the second resistor is connected with one end of a second fuse, and the other end of the second fuse is used for being connected with external positive input;
the first end and the second end of the TVS tube are respectively connected with a first pin and a second pin of the electromagnetic isolator; a third pin and a fourth pin of the electromagnetic isolator are respectively connected with a negative input end and a positive input end of the first operational amplifier; the output end of the first operational amplifier is connected with the negative input end of the second operational amplifier, and the positive input end of the second operational amplifier is used for being connected with a power supply; and the output end of the second operational amplifier is used as the output end of the voltage detection circuit.
Furthermore, the output end of the current detection circuit is connected with the processor, a current sensor is arranged in the current detection circuit, and the current sensor is connected with the output end of the current detection circuit after passing through a filter circuit and a voltage stabilizing circuit.
Furthermore, the output end of the current sensor is connected with two ends of a third resistor, the third resistor is connected with a first capacitor in parallel, two ends of the first capacitor are connected with a second capacitor in parallel through a fourth resistor, two ends of the second capacitor are connected with a voltage stabilizing diode in parallel, and two ends of the voltage stabilizing diode are used as the output end of the current detection circuit.
Further, the voltage detection circuit includes:
the first voltage detection circuit is used for detecting the voltage of the sending end of the length measuring equipment;
the second voltage detection circuit is used for detecting the receiving end voltage of the length measuring equipment;
and the output ends of the first voltage detection circuit and the second voltage detection circuit are connected with the processor.
Further, the current sensor is a perforated hall current transformer.
The utility model discloses relative prior art has outstanding substantive characteristics and the progress that is showing, specifically speaking, the utility model has the following advantages:
the utility model discloses a set up current detection circuit and voltage detection circuit, can be in succession, monitor hump length measuring equipment send end voltage, send end electric current and receive end voltage in real time, according to the electric current that obtains and voltage analysis length measuring equipment running state, whether trouble and fault location, adopt the algorithm to wherein receive end voltage, convert length information into in real time, through the unusual fluctuation of length to the position of the not hard up rail line that continues of accurate locking, the utility model discloses the precision is high, multiple functional, satisfies the electric affairs section, hump workshop workspace to the management and the on-the-spot maintenance's of hump station length measuring equipment actual need, has compensatied at present internal vacancy about hump length measuring equipment on-line monitoring.
Drawings
FIG. 1 is a flow chart of the present invention;
fig. 2 is a circuit diagram of voltage detection in an embodiment of the present invention;
fig. 3 is a schematic diagram of the receiving end voltage position in the embodiment of the present invention;
fig. 4 is a circuit diagram of the current detection circuit in the embodiment of the present invention;
FIG. 5 is a schematic diagram of a pin of an analog multiplexer according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a pin of the DSP in the embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
Examples
System architecture
The on-line monitoring system of the hump length measuring equipment in the embodiment comprises a sending end current detection circuit, a sending end voltage detection circuit and a receiving end voltage detection circuit, wherein the sampling positions of the sending end voltage, the sending end current and the receiving end voltage are all at a distributing cabinet (a dividing point of indoor and outdoor equipment), so that the daily maintenance of the length measuring equipment on site and the quick positioning of the fault position when the length measuring equipment is in fault are facilitated. The voltage and current detection circuits are all connected with a processing unit (namely a length measuring equipment acquisition system), and the length measuring equipment acquisition system is connected with a remote terminal through a hump signal centralized monitoring system and a server in sequence, so that the real-time monitoring of the sending end voltage, the sending end current and the receiving end voltage of the length measuring equipment is realized.
In this embodiment, the detection circuits of the sending terminal voltage and the receiving terminal voltage are the same, taking detection of the receiving terminal voltage as an example, as shown in fig. 2, two terminals, V1-and V1+, detect the receiving terminal voltage of the length measuring equipment, and the voltage detection circuit is provided with a PTC1, a PTC2, a high-resistance R42, a high-resistance R43, a TVS tube, an electromagnetic isolator TR1, an operational amplifier U10A and an operational amplifier U10B;
one end of the PTC1 is used for being connected with an external negative input V1-, the other end of the PTC1 is connected with one end of a high-resistance R42, the other end of the high-resistance R42 is connected with the first end of the TVS tube, the second end of the TVS tube is connected with one end of a high-resistance R43, the other end of the high-resistance R43 is connected with one end of the PTC2, and the other end of the PTC2 is used for being connected with an external positive input V1 +;
the first end and the second end of the TVS tube are respectively connected with pin 1 and pin 2 of the electromagnetic isolator TR 1; a pin 3 and a pin 4 of the electromagnetic isolator TR1 are respectively connected with a negative input end and a positive input end of the operational amplifier U10A; the output end of the operational amplifier U10A is connected with the negative input end of the operational amplifier U10B, the positive input end of the operational amplifier U10B is used for connecting a power supply, and the negative input end of the operational amplifier U10B is used for connecting the power supply; the output terminal of the operational amplifier U10B serves as the output terminal of the voltage detection circuit.
As shown in FIG. 3, two ends V1-and V1+ detect 8 and 10 points in the lightning protection distribution cabinet. The collected voltage passes through a PTC (resettable fuse), a high-resistance TVS (transient voltage suppressor) tube and an electromagnetic isolation TR1, then passes through a two-stage operational amplifier and then is output AD1, AD1 is directly connected to an AD pin of a DSP, and the collection is completed by the DSP, as shown in figure 6. The first stage operational amplifier U10A converts current to voltage because TR1 is an electromagnetic isolation module with 1mA input/1 mA output, so the first stage operational amplifier U10A converts current to voltage. The second-stage operational amplifier U10B is used for signal conditioning, signal amplification, lifting and filtering. The TVS (transient voltage suppressor) can prevent the TVS from being serially connected into a measuring circuit of a later stage due to similar high-voltage impact, and the high-voltage resistance of the module is improved.
As shown in fig. 4, the current detection circuit in this embodiment includes a perforated hall current transformer, and according to the safety design principle, the perforated hall current transformer is used to collect original data, a sending end line (i.e., an input side line) of the length measurement device passes through the middle of the perforated hall current transformer, the perforated hall current transformer needs ± 12V power supply, the output of the perforated hall current transformer is filtered and stabilized, then passes through an analog multiplexer 74HC4051, and is output to an AD port of the DSP, the collection is completed by the DSP, and the pin connection relationship between the analog multiplexer 74HC4051 and the DSP is shown in fig. 5 and fig. 6.
Detection method
As shown in fig. 1, detecting a sending end voltage, a sending end current and a receiving end voltage of the length measuring equipment; if the voltage of the sending end exceeds the corresponding threshold value or the current of the sending end exceeds the corresponding threshold value, sending out an abnormal alarm of the length measuring sending end and prompting that the fault position is an indoor length measuring sending end;
if the voltage and current of the sending end are normal and the voltage of the receiving end exceeds the corresponding threshold value, sending an abnormal alarm of the length measuring receiving end and prompting that the fault position is outdoor length measuring equipment; if the voltage and current at the sending end are normal and the voltage at the receiving end is suddenly changed, a warning of loosening of the steel rail connecting wire is sent out, and the position of the loosened steel rail connecting wire is prompted.
Under the condition that the steel rail connecting line is not loosened, the idle length is continuously and smoothly changed in the process of sliding the vehicle, when the steel rail connecting line is loosened, the idle length has instant sudden change at the moment when the wheel presses the loosened connecting line, whether the steel rail connecting line is loosened or not is judged according to the instant sudden change of the idle length, the accurate position of the loosened connecting line is prompted according to the instant sudden change of the idle length, and the workload of on-site maintenance of the steel rail connecting line is reduced.
Selecting N (N is more than or equal to 4) sampling points on a test length measurement section, short-circuiting a track circuit at each sampling point by using a seal line, and recording the sampling distance between each sampling point and a sensor;
when the train runs on a test length measuring section, recording the receiving end voltage of the length measuring equipment when the train reaches each sampling point to obtain N groups of data; obtaining a linear equation of the sampling distance and the receiving end voltage by adopting a curve fitting mode for the N groups of data;
when the train runs in an actual length measuring section, detecting the receiving end voltage of the length measuring equipment, substituting the detected receiving end voltage into a linear equation to calculate to obtain a corresponding sampling distance, namely the idle length of the length measuring equipment when the receiving end voltage is detected to exceed a voltage threshold value or generate sudden change, wherein the position corresponding to the calculated sampling distance is the position where the steel rail connecting line is loosened.
The linear equation is:
wherein L is the sampling distance, V is the receiving end voltage,
for the coefficients, the least square method is used for curve fitting when the linear equation is obtained according to the N sets of data in this embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (5)
1. The utility model provides a hump length measuring equipment on-line monitoring system which characterized in that: the monitoring system comprises a processor, a current detection circuit and a voltage detection circuit;
the voltage detection circuit is provided with a first fuse, a second fuse, a first resistor, a second resistor, a TVS (transient voltage suppressor) tube, an electromagnetic isolator, a first operational amplifier and a second operational amplifier;
one end of the first fuse is used for being connected with external negative input, the other end of the first fuse is connected with one end of a first resistor, the other end of the first resistor is connected with the first end of the TVS tube, the second end of the TVS tube is connected with one end of a second resistor, the other end of the second resistor is connected with one end of a second fuse, and the other end of the second fuse is used for being connected with external positive input;
the first end and the second end of the TVS tube are respectively connected with a first pin and a second pin of the electromagnetic isolator; a third pin and a fourth pin of the electromagnetic isolator are respectively connected with a negative input end and a positive input end of the first operational amplifier; the output end of the first operational amplifier is connected with the negative input end of the second operational amplifier, and the positive input end of the second operational amplifier is used for being connected with a power supply; and the output end of the second operational amplifier is used as the output end of the voltage detection circuit.
2. The on-line monitoring system of the hump length measuring equipment according to claim 1, characterized in that: the output end of the current detection circuit is connected with the processor, a current sensor is arranged in the current detection circuit, and the current sensor is connected with the output end of the current detection circuit after passing through a filter circuit and a voltage stabilizing circuit.
3. The on-line monitoring system of the hump length measuring equipment as claimed in claim 2, characterized in that: the output end of the current sensor is connected with the two ends of a third resistor, the third resistor is connected with a first capacitor in parallel, the two ends of the first capacitor are connected with a second capacitor in parallel through a fourth resistor, the two ends of the second capacitor are connected with a voltage stabilizing diode in parallel, and the two ends of the voltage stabilizing diode are used as the output end of the current detection circuit.
4. The on-line monitoring system for the hump length measuring equipment according to claim 2 or 3, wherein the voltage detection circuit comprises:
the first voltage detection circuit is used for detecting the voltage of the sending end of the length measuring equipment;
the second voltage detection circuit is used for detecting the receiving end voltage of the length measuring equipment;
and the output ends of the first voltage detection circuit and the second voltage detection circuit are connected with the processor.
5. The on-line monitoring system of the hump length measuring equipment as claimed in claim 4, characterized in that: the current sensor is a perforated Hall current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923808.5U CN210376540U (en) | 2019-06-19 | 2019-06-19 | Online monitoring system of hump length measuring equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923808.5U CN210376540U (en) | 2019-06-19 | 2019-06-19 | Online monitoring system of hump length measuring equipment |
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| CN210376540U true CN210376540U (en) | 2020-04-21 |
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| CN201920923808.5U Withdrawn - After Issue CN210376540U (en) | 2019-06-19 | 2019-06-19 | Online monitoring system of hump length measuring equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286282A (en) * | 2019-06-19 | 2019-09-27 | 河南辉煌科技股份有限公司 | A kind of long equipment on-line monitoring system and method for hump survey |
| CN112234590A (en) * | 2020-10-10 | 2021-01-15 | 绵阳市维博电子有限责任公司 | Switch point machine action voltage detection device and PCB (printed circuit board) distribution mode thereof |
-
2019
- 2019-06-19 CN CN201920923808.5U patent/CN210376540U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286282A (en) * | 2019-06-19 | 2019-09-27 | 河南辉煌科技股份有限公司 | A kind of long equipment on-line monitoring system and method for hump survey |
| CN110286282B (en) * | 2019-06-19 | 2024-09-27 | 河南辉煌科技股份有限公司 | Hump length measurement equipment online monitoring system and hump length measurement equipment online monitoring method |
| CN112234590A (en) * | 2020-10-10 | 2021-01-15 | 绵阳市维博电子有限责任公司 | Switch point machine action voltage detection device and PCB (printed circuit board) distribution mode thereof |
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Granted publication date: 20200421 Effective date of abandoning: 20240927 |
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Granted publication date: 20200421 Effective date of abandoning: 20240927 |