OA20668A

OA20668A - Track circuit outdoor device having noncontact voltage acquisition function.

Info

Publication number: OA20668A
Application number: OA1202100398
Authority: OA
Inventors: Rui Liu; Xiangwu JIA; Long SHI; Chao Sun; Xian Zhang; Zhiqiang Gao; Xuesong Han
Original assignee: Crsc Research & Design Institute Group Co., Ltd.
Priority date: 2020-10-23
Filing date: 2021-07-06
Publication date: 2022-12-30

Abstract

The present disclosure provides a track circuit outdoor device having a non-contact voltage acquisition function, including a tuning-matching unit device; the tuning-matching unit device includes an information acquiring module; and the information acquiring module is configured to monitor an actual current value or an actual voltage value at a tested cable inside the outdoor device. In the present disclosure, an acquiring probe is integrated into the device, so that the device has a voltage acquisition function; the acquiring probe acquires a voltage in a noncontact mode, so that the acquiring probe may acquire a current at a tested point without direct electrical connection; and respective modules in a processing module is embedded into the inside of the device, so that the device is not affected by an external environment, which improves reliability of the device.

Description

The présent disclosure belongs to a field of voltage acquisition track circuits, and more particularly, relates to a track circuit outdoor devîce having a non-contact voltage acquisition function.

BACKGROUND

An existing tuning-matching unit device does not hâve a voltage acquisition function, and shall be connected to an extemal acquiring device if a voltage needs to be acquired. However, cumbersome site construction and long-term exposure to harsh environment lead to low reliability of the voltage acquired by the external acquiring device; and existing voltage acquisition is implemented in a hîgh-impedance isolation mode, in which an acquisition point is in indirect contact with a tested circuit, when an acquisition portion fails, the tested circuit will still be affected, which seriously affects a normal operation of the device.

Therefore, how to provide a track circuit outdoor device for voltage acquisition is an urgent problem to be solved by those skilled in the art.

SUMMARY

With respect to the above-described problems, the présent disclosure provides a track circuit outdoor device having a non-contact voltage acquisition function. A track circuit outdoor device having a non-contact voltage acquisition function includes a tuning-matching unit device. The tuning-matching unit device includes an information acquiring module. The information acquiring module is configured to monitor an actual current value or an actual voltage value at a tested cable inside the outdoor device.

Further, the information acquiring module includes an acquiring probe, a radio frequency cable and a processing module, wherein the acquiring probe is configured to acquire a current at the tested cable to obtain a coupling current. The radio frequency cable is configured to transmit the coupling current; and the processing module is configured to receive the coupling current, perform signal processing on the coupling current, and obtain the actual current value or the actual voltage value at the tested cable,

Further, the acquiring probe adopts a non-contact acquisition mode.

Further, the acquiring probe includes a first group of acquiring probes and a second group of acquiring probes.

Further, the first group of acquiring probes is configured to acquire a cable-sîde voltage Veie2 at the tested cable, and the first group of acquiring probes includes a first probe 1 and a second probe 2.

Further, the second group of acquiring probes is configured to acquire a rail-side voltage Vuiu2 at the tested cable; and the second group of acquiring probes includes a third probe 3 and a fourth probe 4. Further, ïnner diameters of the first probe 1, the second probe 2, the third probe 3, and the fourth probe 4 ail match an outer diameter of the tested cable,

Further, the processing module includes a signal amplifying module, a detecting module, an analog-to-digital converting module, and a voltage processing module. The signal amplifying module is configured to receive the coupling current, and amplify the coupling current, to obtain an amplified signal through a correction coefficient. The detecting module is configured to receive the amplified signal, detect the amplified signal to obtain a same voltage waveform as that at the tested cable, and s end the voltage waveform to the analog-to-digital converting module. The analog-to-digital converting module is configured to sample the voltage waveform, obtain voltage waveform data, and send the voltage waveform data to the voltage processing module; and the voltage processing module is configured to receive the voltage waveform data, and perform voltage processing on the voltage waveform data, to obtain the actual voltage value.

Further, the perfonning voltage processing on the voltage waveform data includes receiving the voltage waveform data, analyzing the voltage waveform data, obtaining an actual voltage ratio, and obtaining the actual voltage value according to a ratio coefficient calibrated before use. Further, the signal amplifying module, the detecting module, the analog-to-digîtal converting module, and the voltage processing module are integrated together and sealed by embedment.

The présent disclosure further provides a non-contact voltage acquiring method, including: monitoring, by an information acquiring module, an actual current value or an actual voltage value at a tested cable inside an outdoor device. Further, the monitoring an actual current value or an actual voltage value at a tested cable inside an outdoor device includes: acquiring, by an acquiring probe, a current at the tested cable, to obtain a coupling current; transmittîng, by a radio frequency cable, the coupling current; and receiving, by a processing module, the coupling current, and performing signal processing on the coupling current, to obtain the actual current value or the actual voltage value.

Further, the acquiring probe acquires a current at the tested cable in a non-contact acquisition mode. Further, the performing signal processing on the coupling current includes: receiving, by a signal amplifying module, the coupling current, and amplifying the coupling current, to obtain an amplified signal through a correction coefficient; receiving, by a detecting module, the amplified signal, detecting the amplified signal to obtain a same voltage waveform as that at the tested cable, and sending the voltage waveform to the analog-to-digîtal converting module; sampling, by an analog-to-digital converting module, the voltage waveform to obtain voltage waveform data, and sending the voltage waveform data to a voltage processing module; and receiving, by the voltage processing module, the voltage waveform data, and performing voltage processing on the voltage waveform data, to obtain the actual voltage value.

Further, the perfonning voltage processing on the voltage waveform data includes: receiving the voltage waveform data, analyzing the voltage waveform data, obtaining an actual voltage ratio, and obtaining the actual voltage value according to a ratio coefficient calibrated before use.

In the présent disclosure, the acquiring probe is integrated into the device, so that the device has a voltage acquisition function; the acquiring probe acquires a voltage in a non-contact mode, so that the acquiring probe may acquire a current at a tested point without direct electrical connection; and respective modules in the processing module are embedded into the insîde of the device, so that the device is not affected by an extemal environment, which împroves relîabîlity of the device.

Other features and advanîages of the présent disclosure will be further explained in the following description, and partly become self-evîdent therefrom, or be understood through implémentation of the présent disclosure. The objectives and other advantages of the présent disclosure will be achieved through the structure specîfically pointed out in the description, daims, and the accompanyîng drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Tn order to clearly illustrate the technical solution of the embodiments of the présent disclosure or in the prier art, the drawings that need to be used in description of the embodiments or the prior art will be briefly described in the following; it is obvions that the described drawings are only related to some embodiments of the présent disclosure; based on the drawings, those ordinarily skilled in the art can acquire other drawings, without any inventive work.

FIG. 1 shows a schematic diagram of a track circuit outdoor device having a non-contact voltage acquisition function according to an embodiment of the présent disclosure; and

FIG. 2 shows a schematic diagram of an installation structure of a track circuit outdoor device having a non-contact voltage acquisition function according to an embodiment of the présent disclosure.

Référencé signs: 1. first probe; 2. second probe; 3. third probe; 4. fourth probe; 5. lefl connecting terminal; 6. acquiring auxiliary unît.

DETAILED DESCRIPTION

In order to make objectives, technical details and advantages of the embodiments of the présent disclosure apparent, the technical solutions of the embodiment will be described in a clearly and fully understandable way in connection with the drawings related to the embodiments of the présent disclosure. It is obvions that the described embodiments are just a part but not ali of the embodiments of the présent disclosure. Based on the described embodiments herein, those ordinarily skîlled in the art can acquire other embodiment(s), without any inventive work, which should be within the scope of the présent disclosure.

FIG. 1 shows a schematic dîagram of a track circuit outdoor device having a non-contact voltage acquisition function according to an embodiment of the présent disclosure. Referring to FIG. I, the track circuit outdoor device having the non-contact voltage acquisition function according to the embodiment of the présent disclosure includes a tuning-matching unit device; the tuning-matching unit device includes an information acquiring module; and the information acquiring module is configured to monitor an actual current value or voltage value at a tested cable inside the outdoor device.

Further, the information acquiring module includes an acquiring probe, a radio frequency cable, and a processing module; wherein the acquiring probe is configured to acquire a current at the tested cable to obtain a coupling current; specîfically, the acquiring probe acquîtes a current at the tested cable in a non-contact acquisition mode; the radio frequency cable is configured to transmit the coupling current; and the processing module is configured to receive the coupling current, and perform signal processing on the coupling current, to obtain the actual current value or voltage value at the tested cable.

In the embodiment of the présent disclosure, when acquiring a voltage, the information acquiring module of the tuning-matching unît device acquires the voltage in a non-contact mode, that is, a sensor electrode of the acquiring probe is placed in an electric field, a tiny coupling current is generated between the sensor electrode and the tested cable through an 5 electrostatic field, the radio frequency cable transmits the generated tiny coupling current to the processing module, the processing module receives the coupling current and perforais signal processing on the coupling current to obtaîn the actual current value or voltage value at the tested cable inside the outdoor device.

Specifically, the acquiring probe includes a first group of acquiring probes and a second group of acquiring probes. The first group of acquiring probes is configured to acquire a cable-side voltage Veie2; and the first group of acquiring probes includes a first probe 1 and a second probe 2. The second group of acquiring probes is configured to acquire a rail-side voltage Vuiuz; and the second group of acquiring probes includes a third probe 3 and a fourth 15 probe 4.

FIG. 2 shows a schematic diagram of an installation structure of a track circuit outdoor device having a non-contact voltage acquisition fonction according to an embodiment of the présent disclosure. Referring to FIG. 2, in the embodiment of the présent disclosure, there are two 20 voltage measuring points inside the tuning-matching unit device, which are a cable-side voltage Veie2 and a rail-side voltage Vuiu2, respectively. Wherein, the first group of acquiring probes for acquiring the cable-side voltage Veiez is directly arranged at cable-side voltage terminais El and E2. The third probe 3 for the rail-side voltage Vuimis provided at a VI terminal, the fourth probe 4 is provided at a left connecting terminal 5; and such arrangement 25 not only may ensure that a voltage cross connecting pièces on both sides can be tested during normal use, that is, when the VI terminal and the V3 terminal are connected, but also may ensure that a voltage of V1V2 can be measured during test, that is, when the VI terminal and the V3 terminal are disconnected.

Wherein, inner diametersOÎthe .first probe 1, the second probe 2, the third probe 3, and the fourth probe 4 match an outer diameter of the tested cable. Exemplarily, tested cables are ail 1.5-mm² cables; and the fîrst probe 1, the second probe 2, the thîrd probe 3, and the fourth probe 4 are fabrlcated according to the outer diameter of the tested cable, to ensure accuracy and stability of acquired data.

After the coupling current is acquired by the acquiring probe, it is transmitted to the Processing module through the radio frequency cable. Further, specifically, the processing module includes a signal amplifying module, a detecting module, an analog-to-digital converting module, and a voltage processing module; the signal amplifying module is configured to receive the coupling current, and amplify the coupling current, to obtain the amplified signal through a correction coefficient; the detecting module is configured to receive the amplified signal, detect the amplified signal, obtain a sanie voltage waveform as that at the tested cable, and send the voltage waveform to the analog-to-digital converting module; the analog-to-digital converting module is configured to sample the voltage waveform to obtain voltage waveform data, and send the voltage waveform data to the voltage processing module; the voltage processing module is configured to receive the voltage waveform data, and perform voltage processing on the voltage waveform data, to obtain the actual voltage value, wherein the performing voltage processing on the voltage waveform data includes: receiving the voltage waveform data, analyzing the voltage waveform data, obtaining an actual voltage ratio, and obtainîng the actual voltage value according to a ratio coefficient calibrated before use. The ratio coefficient calibrated before use is set through correction before use. After the actual voltage value is obtained, the voltage value is uploaded to the interior through a Power Line Carrier (PLC). The processing module is set înside an acquiring auxiliary unit 6.

In the embodiment of the présent disclosure, the signal amplifying module, the detecting module, the analog-to-digital converting module, and the voltage processing module are întegrated together and sealed by embedment, so that the tuning-matching unit device is not affected by an extemal environment, which improves relîability of the device.

In the présent disclosure, the acquîring probe is integrated into the device, so that the device has a voltage acquisition fonction; the processîng module is embedded into the inside of the device, so that the device is not affected by an extemal environment, which improves reliability of the device; the acquîring probe acquircs a voltage in a non-contact mode, so that the acquîring probe may acquire a displacement current between a tested object and a voltage sensing electrode at the front of the probe through spatial coupling to obtain a voltage on a surface of the tested object or free space without direct electrical connection, and the acquïred coupling current îs processed, so as to obtain the actual current value or voltage value at the tested cable insîde the outdoor device. In this way, the actual current value or voltage value at the tested cable inside the outdoor device is monitored.

The présent disclosure further provides a non-contact voltage acquîring method, including: monîtoring, by an information acquîring module, an actual current value or an actual voltage value at a tested cable inside an outdoor device. Tire monîtoring an actual current value or an actual voltage value at a tested cable inside an outdoor device includes: acquîring, by an acquîring probe, a current at the tested cable to obtain a coupling current; wherein the acquîring probe acquires a current at the tested cable in a non-contact acquisition mode; transmitting, by a radio frequency cable, the coupling current; receiving, by a processîng module, the coupling current, and performîng signal processîng on the coupling current, to obtain the actual current value or the actual voltage value.

The performîng signal processîng on the coupling current includes: receiving, by a signal amplifying module, the coupling current, and amplilying the coupling current, to obtain an amplified signal through a correction coefficient; receiving, by a detecting module, the amplified signal, detecting the amplified signal to obtain a saine voltage waveform as that at the tested cable, and sendîng the voltage waveform to the analog-to-digital converting module; sampling, by an analog-to-digital converting module, the voltage waveform to obtain voltage waveform data, and sendîng the voltage waveform data to the voltage processîng module; receiving, by the voltage processîng module, the voltage waveform data, and performîng voltage processîng on the voltage waveform data, to obtain the actual voltage s

value.

The performîng voltage processing on the voltage waveform data includes: receiving the voltage waveform data, analyzing the voltage waveform data, obtaining an actual voltage 5 ratio, and obtaining the actual voltage value according to a ratio coefficient calîbrated before use.

Although the présent disclosure has been illustrated in detail with référencé to the foregoing embodiments, those ordinarily skilled in the art will readily appreciate that many 10 modifications can still be made to the technical solutions described in the foregoing embodiments, or équivalent substitutions are made to some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to départ from the spirit and scope of the technical solutions of the embodiments of the présent disclosure.

Claims

1. A track circuit outdoor device having a non-contact voltage acquisition function, comprising a tuning-matching unit device, wherein the tuning-matching unit device comprises an information acquiring module;

the information acquiring module is configured to monitor an actual current value or an actual voltage value at a tested cable înside the outdoor device.

2. The track circuit outdoor device having the non-contact voltage acquisition function accordingto claim 1, wherein:

the information acquiring module comprises an acquiring probe, a radio frequency cable and a proccssing module, of which:

the acquiring probe is configured to acquire a current at the tested cable to obtain a coupling current;

the radio frequency cable is configured to transmit the coupling current;

the processing module is configured to receive the coupling current, perform signal Processing on the coupling current, and obtain the actual current value or the actual voltage value at the tested cable.

3. The track circuit outdoor device having the non-contact voltage acquisition function according to claim 2, wherein:

the acquiring probe adopts a non-contact acquisition mode.

4. The track circuit outdoor device having the non-contact voltage acquisition function according to claim 3, wherein:

the acquiring probe comprises a first group of acquiring probes and a second group of acquiring probes.

5. The track circuit outdoor device having the non-contact voltage acquisition function according to claim 4, wherein:

the first group of acquiring probes is configured to acquire a cable-side voltage Vnirzat the tested cable; and the first group of acquiring probes comprises a first probe (1) and a second probe (2).

6. The track circuit outdoor device having the non-contact voltage acquisition function according to claim 4, wherein:

the second group of acquiring probes is configured to acquire a rail-side voltage Vuiu2 at the tested cable; and the second group of acquiring probes comprises a third probe (3) and a fourth probe (4).

7. The track circuit outdoor device having the non-contact voltage acquisition function according to any one of claim 5 or 6, wherein:

inner diameters of the first probe (1), the second probe (2), the third probe (3) and the fourth probe (4) ail match an outer diameter of the tested cable.

8. The track circuit outdoor device having the non-contact voltage acquisition function according to claim 2, wherein:

the processing module comprises a signal amplifying module, a detecting module, an analog-to-digital converting module, and a voltage processing module;

the signal amplifying module is configured to receive the coupling current, amplify the coupling current, and obtain an amplified signal through a correction coefficient;

the detecting module is configured to receive the amplified signal, detect the amplified signal to obtain a same voltage wavefonn as that at the tested cable, and send the voltage wavefonn to the analog-to-digital converting module;

the analog-to-digital converting module is configured to sample the voltage wavefonn, obtain voltage wavefonn data, and send the voltage waveform data to the voltage processing module; and the voltage processing module is configured to receive the voltage waveform data, perform voltage processing on the voltage wavefonn data, and obtain the actual voltage value.

9. The track circuit outdoor device having the non-contact voltage acquisition fonction according to claim 8, wherein:

the performîng voltage processing on the voltage waveform data comprises:

receiving the voltage waveform data, analyzing the voltage waveform data, obtaining an actual voltage ratio, and obtaining the actual voltage value according to a ratio coefficient calibrated before use.

10. The track circuit outdoor device having the non-contact voltage acquisition function according to 8, wherein:

the signal amplifying module, the detecting module, the analog-to-digital converting module, and the voltage processing module are integrated together and sealed by embedment.

Π. A non-contact voltage acquiring method, comprising:

monitoring, by an information acquiring module, an actual current value or an actual voltage value at a tested cable inside an outdoor device.

12. The non-contact voltage acquiring method according to claim 11, wherein:

the monitoring an actual current value or an actual voltage value at a tested cable inside an outdoor device comprises:

acquiring, by an acquiring probe, a current at the tested cable, to obtain a coupling current;

transmitting, by a radio frequency cable, the coupling current; and receiving, by a processing module, the coupling current and performîng signal processing on the coupling current, to obtain the actual current value or the actual voltage value.

13. The non-contact voltage acquiring method according to claim 12, wherein:

the acquiring probe acquîres a current at the tested cable in a non-contact acquisition mode.

14. The non-contact voltage acquiring method according to claim 12, wherein:

the performing signal processing on the coupling current comprises:

receiving, by a signal amplifying module, the coupling current, and amplifying the coupling current, to obtain an amplified signal through a correction coefficient;

receiving, by a detecting module, the amplified signal, detecting the amplified signal to obtain a same voltage waveform as that at the tested cable, and sending the voltage waveform to the analog-to-digital converting module;

sampling, by an analog-to-digital converting module, the voltage waveform to obtain voltage waveform data, and sending the voltage waveform data to a voltage processing module; and receiving, by the voltage processing module, the voltage waveform data, and performing voltage processing on the voltage waveform data, to obtain the actual voltage value.

15. The non-contact voltage acquiring method according to claim 14, wherein:

the perfonning voltage processing on the voltage waveform data comprises: