Line sequence detection device of double-path receiving coil and locomotive signal vehicle-mounted system

Abstract

The utility model discloses a line sequence detection device of a double-path receiving coil and a locomotive signal vehicle-mounted system, and relates to the field of coil line sequence detection, and the output positive end of a power supply module in the device is connected with the output negative end of the power supply module through a connecting cable so as to provide alternating current; the connecting cable is arranged on the operation table in a polygonal surrounding mode, a first core wire of an Nth cable of a known standard double-path receiving coil is an outlet end, a second core wire of the Nth cable of the known standard double-path receiving coil is an inlet end, and an Nth coil of the standard double-path receiving coil is connected with an Nth coil of the double-path receiving coil to be tested in series through the wiring module; and the parameter detection module detects the circuit parameters of the Nth series loop after series connection, and further determines the corresponding conditions of the first core wire and the second core wire of the Nth cable of the to-be-detected double-path receiving coil and the output end and the input end of the Nth coil according to the circuit parameters of the Nth series loop after series connection, so that the scheme ensures that the to-be-detected double-path receiving coil can be applied according to the correct wire sequence subsequently; the production field application is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of coil line sequence measurement, in particular to a line sequence detection device for a dual-path receiving coil and a locomotive signal onboard system. Background Art

[0002] The dual-channel receiving coil is an important component in the locomotive signal onboard system. It includes two coils inside, called the A-channel coil and the B-channel coil. Each channel leads to a two-core shielded cable. Specifically, taking channel A as an example, the output and input ends of the A-channel coil each lead to a core wire. These two core wires are wrapped by a shielding layer to form a two-core shielded cable for connection to external devices. The same applies to channel B.

[0003] In actual applications, the above-mentioned coils are all arranged in the outer shell, and the specific lead-out method of the input and output ends of each coil in the outer shell cannot be known by external observation. That is, for technical personnel, they can only know that the dual-channel receiving coil is connected to two cables and each cable includes two core wires, but they do not know which of the two core wires in each cable is the output end of the corresponding circuit coil inside it, and which is the input end of the corresponding circuit coil inside it. As a result, when subsequent technical personnel connect it to the control circuit for application, it is very likely that wiring errors will occur, and the expected control effect cannot be achieved, causing safety problems.

[0004] Therefore, how to provide an effective solution to realize line sequence detection of dual-path receiving coils is an urgent problem to be solved. Utility Model Content

[0005] In view of this, the utility model provides a line sequence detection device for a dual-path receiving coil and a locomotive signal onboard system, which ensures that the dual-path receiving coil to be tested can be applied in the correct line sequence subsequently, which is beneficial for application on the production site.

[0006] To solve the above technical problems, the present application provides a line sequence detection device for a dual-channel receiving coil, comprising an operating table and a power supply module, a connecting cable, a wiring module, a standard dual-channel receiving coil and a parameter detection module arranged on the operating table;

[0007] The positive output terminal of the power module is connected to the negative output terminal of the power module via the connecting cable to provide alternating current;

[0008] The connecting cable is arranged on the operating table in a polygonal shape and has at least one set of parallel sides after being arranged;

[0009] The standard two-way receiving coil is arranged on a first side of the connecting cable, a first core wire as an output end of an N-way cable of the standard two-way receiving coil is connected to a first interface of an N-way standard input end of the wiring module, and a second core wire as an input end of the N-way cable is connected to a second interface of the N-way standard input end of the wiring module, where N is one or two;

[0010] The two-way receiving coil to be tested is arranged on a second side parallel to the first side, the first core wire of the N-th cable of the two-way receiving coil to be tested is connected to the first interface of the N-th input end to be tested of the wiring module, and the second core wire of the N-th cable is connected to the second interface of the N-th input end to be tested of the wiring module;

[0011] The loop output interface of the Nth output end of the wiring module is connected to the parameter detection module, and is used for connecting the Nth coil of the standard two-way receiving coil and the Nth coil of the two-way receiving coil to be tested in series;

[0012] The parameter detection module is used to detect the circuit parameters of the Nth series circuit after the series connection.

[0013] Furthermore, the shielding layer of the Nth cable of the standard two-way receiving coil is connected to the third interface of the Nth standard input end of the wiring module, and the shielding layer of the Nth cable of the two-way receiving coil to be tested is connected to the third interface of the Nth input end to be tested of the wiring module;

[0014] The grounding interface of the Nth output terminal of the wiring module is grounded;

[0015] The wiring module is further used to ground the shielding layer of the Nth cable of the standard two-way receiving coil, and to ground the shielding layer of the Nth cable of the two-way receiving coil to be tested.

[0016] Furthermore, the polygon is a rectangle.

[0017] Furthermore, the power supply module includes a transformer and a current-limiting resistor;

[0018] The input end of the transformer is used to connect to an AC power source; the output end of the transformer, the connecting cable and the current limiting resistor are connected in sequence.

[0019] Furthermore, it also includes a prompt module;

[0020] The prompt module is connected to the parameter detection module and is used to prompt the detection result of the circuit parameter.

[0021] Furthermore, the parameter detection module is an AC voltage detection module;

[0022] The wiring module includes two first cables, two second cable groups and two first load resistors;

[0023] One end of the Nth first cable is connected to the first core wire of the Nth cable of the standard two-way receiving coil, and the other end is connected to the first core wire of the Nth cable of the two-way receiving coil to be tested;

[0024] The Nth second cable group includes two second cables, and one end of one of the second cables is connected to the second core wire of the Nth cable of the standard two-way receiving coil, the other end of one of the second cables is respectively connected to one end of the Nth first load resistor and the AC voltage detection module, one end of another second cable is connected to the second core wire of the Nth cable of the two-way receiving coil to be tested, and the other end of another second cable is respectively connected to the other end of the Nth first load resistor and the AC voltage detection module.

[0025] Furthermore, the AC voltage detection module includes two AC voltmeters;

[0026] The Nth AC voltmeter is connected in parallel with the Nth first load resistor.

[0027] Furthermore, the parameter detection module is an AC current detection module;

[0028] The wiring module includes two third cables, two fourth cable groups and two second load resistors;

[0029] One end of the Nth third cable is connected to the first core wire of the Nth cable of the standard two-way receiving coil, and the other end is connected to the first core wire of the Nth cable of the two-way receiving coil to be tested;

[0030] The Nth fourth cable group includes two fourth cables, and one end of one of the fourth cables is connected to the second core wire of the Nth cable of the standard two-way receiving coil, the other end of one of the fourth cables is connected to one end of the Nth second load resistor, and the other end of the Nth second load resistor is connected to the AC current detection module; one end of another fourth cable is connected to the second core wire of the Nth cable of the two-way receiving coil to be tested, and the other end of the another fourth cable is connected to the AC current detection module.

[0031] Furthermore, the AC current detection module includes two AC ammeters;

[0032] The Nth alternating current ammeter is connected in series with the Nth second load resistor, the Nth coil of the standard two-way receiving coil, and the Nth coil of the two-way receiving coil to be tested.

[0033] To solve the above technical problems, the present application also provides a locomotive signal on-board system, including M dual-path receiving coils and a line sequence detection device for the dual-path receiving coils as described above, where M is an integer not less than 1.

[0034] The present application provides a line sequence detection device for a dual-path receiving coil and a locomotive signal vehicle-mounted system, the device includes an operating table and a power supply module, a connecting cable, a wiring module, a standard dual-path receiving coil and a parameter detection module arranged on the operating table, the output positive terminal of the power supply module is connected to the output negative terminal thereof through a connecting cable to provide alternating current and generate a magnetic field; the connecting cable is arranged in a polygonal shape on the operating table, the first core wire of the Nth cable of the known standard dual-path receiving coil is the output end and the second core wire is the input end, then the Nth coil of the standard dual-path receiving coil is connected to the dual-path receiving line to be tested through the wiring module The Nth coil of the coil is connected in series, and the loop output interface of the Nth output end of the wiring module is connected to the parameter detection module, so that the parameter detection module can detect the circuit parameters of the Nth series loop after the series connection, and then determine the correspondence between the first core wire and the second core wire of the Nth cable of the two-way receiving coil to be tested and the output end and the input end of the Nth coil according to the circuit parameters. The setting of the standard two-way receiving coil can ensure the accuracy of the line sequence detection of the two-way receiving coil to be tested. This solution ensures that the two-way receiving coil to be tested can be applied in the correct line sequence in the future to achieve the expected control effect, which is conducive to application on the production site.

[0035] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0037] Figure 1 This is a structural diagram of a line sequence detection device for a dual-path receiving coil provided by the utility model;

[0038] Figure 2 This is a schematic diagram of the internal cable routing of a wiring module provided by the utility model. DETAILED DESCRIPTION

[0039] The core of the utility model is to provide a line sequence detection device for a dual-path receiving coil and a locomotive signal onboard system, which ensures that the dual-path receiving coil to be tested can be applied in the correct line sequence in the subsequent process, which is beneficial for application on the production site.

[0040] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0041] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "first," "second," and the like generally distinguish objects of a class and do not limit the number of objects. For example, the first object may be one or more.

[0042] Please refer to Figure 1 , Figure 1 This is a structural schematic diagram of a line sequence detection device for a dual-path receiving coil provided by the utility model.

[0043] The line sequence detection device of the dual-channel receiving coil includes an operating table 1 and a power supply module 2, a connecting cable 3, a wiring module 4, a standard dual-channel receiving coil 5 and a parameter detection module 7 arranged on the operating table 1;

[0044] The positive output terminal of the power module 2 is connected to the negative output terminal thereof via a connecting cable 3 to provide AC power.

[0045] The connecting cable 3 is arranged on the operating table 1 in a polygonal shape and has at least one set of parallel sides after being arranged;

[0046] The standard two-way receiving coil 5 is disposed on a first side of the connecting cable 3. The first core wire of the N-th cable of the standard two-way receiving coil 5, which serves as an output, is connected to the first interface of the N-th standard input of the wiring module 4. The second core wire of the N-th cable, which serves as an input, is connected to the second interface of the N-th standard input of the wiring module 4. N is one or two.

[0047] The two-way receiving coil 6 to be tested is arranged on a second side parallel to the first side, the first core wire of the N-th cable of the two-way receiving coil 6 to be tested is connected to the first interface of the N-th input end to be tested of the wiring module 4, and the second core wire of the N-th cable is connected to the second interface of the N-th input end to be tested of the wiring module 4;

[0048] The loop output interface of the N-th output end of the wiring module 4 is connected to the parameter detection module 7, and is used to connect the N-th coil of the standard two-way receiving coil 5 and the N-th coil of the two-way receiving coil to be tested 6 in series;

[0049] The parameter detection module 7 is used to detect the circuit parameters of the Nth series circuit after the series connection.

[0050] In this embodiment, considering the current lack of an effective solution for determining the line sequence of a dual-path receiving coil, the present application provides a line sequence detection device for a dual-path receiving coil to achieve accurate correspondence between the core wires of each cable of the dual-path receiving coil and the input and output ends of the corresponding internal coils.

[0051] Specifically, the connecting cable 3 is arranged on the operating table 1 in a polygonal shape. The polygon here can be a square or a polygon as shown in FIG. Figure 1 The standard two-way receiving coil 5 is set to avoid misjudgment. It is known that the first core wire in the N-way cable corresponds to the output end of the internal N-way coil and the second core wire corresponds to the input end of the N-way coil. The standard two-way receiving coil 5 is placed on the first side of the connecting cable 3; the two-way receiving coil 6 to be tested is placed on the second side parallel to the first side. It should be noted that the direction of the current flowing in the first side at any time is opposite to the direction of the current flowing in the second side, and as shown in FIG. Figure 1 As shown, the standard two-way receiving coil 5 includes a direction mark 51, and the two-way receiving coil to be tested 6 includes a direction mark 61. Therefore, when placing, the direction mark 51 and the direction mark 61 need to face the same direction. Figure 1 place.

[0052] The Nth coil of the standard two-way receiving coil 5 is connected in series with the Nth coil of the two-way receiving coil to be tested 6 through the wiring module 4. From the implementation principle, since the current flowing in the first side is in the opposite direction to the current flowing in the second side, only when the output end of the Nth coil of the standard two-way receiving coil 5 is connected to the output end of the Nth coil of the two-way receiving coil to be tested 6, and the input end of the Nth coil of the standard two-way receiving coil 5 is connected to the input end of the Nth coil of the two-way receiving coil to be tested 6 to form a series circuit, it is called a correct series connection, and it can ensure that the instantaneous induced electromotive force in the Nth series circuit is added. That is to say, if the current at the output end of the Nth coil of the standard two-way receiving coil 5 is flowing If the current at the output end of the Nth coil of the two-way receiving coil 6 to be tested is in the output direction, then the current at the output end of the Nth coil of the standard two-way receiving coil 5 is in the output direction, then the current at the output end of the Nth coil of the two-way receiving coil 6 to be tested is in the output direction. The parameter detection module 7 detects that the value of the circuit parameter of the Nth series circuit is close to the preset parameter value within the allowable range of numerical fluctuation. Otherwise, once the line sequence is wrong and the output and input ends are connected reversely, the instantaneous induced electromotive force in the Nth series circuit will cancel each other out. This is called incorrect series connection, and the circuit parameter measured by the parameter detection module 7 will be close to 0, thereby reliably realizing the line sequence determination of the two-way receiving coil 6 to be tested by relying on the line sequence detection device of the two-way receiving coil.

[0053] It should also be noted that the length of the connecting cable 3 here can be as long as possible so that the distance between the first side and the second side after it is wrapped around is as far as possible.

[0054] In addition, the junction module 4 can be Figure 1 The junction box shown is presented in a form that is limited to the focus of the picture and to avoid confusion in the wiring. Figure 1 The figure shows an example of a first cable 52 of a standard dual-channel receiving coil 5 connected to a first standard input terminal 41 of a wiring module 4. The connection between each core wire in the first cable 52 and each interface of the first standard input terminal 41 can refer to the above description; similarly, Figure 1 It is also exemplarily shown that the second cable 53 of the standard two-way receiving coil 5 is connected to the second standard input terminal 42 of the wiring module 4, the first cable 62 of the two-way receiving coil 6 to be tested is connected to the first input terminal 43 to be tested of the wiring module 4, the second cable 63 of the two-way receiving coil 6 to be tested is connected to the second input terminal 44 to be tested of the wiring module 4, the first output terminal 45 of the wiring module 4 is connected to the parameter detection module 7, and the second output terminal 46 of the wiring module 4 is connected to the parameter detection module 7.

[0055] In summary, the present application provides a line sequence detection device for a dual-channel receiving coil, which can reliably determine the correspondence between the first core wire and the second core wire of the Nth cable of the dual-channel receiving coil to be tested and the output end and the input end of the Nth coil, and the setting of the standard dual-channel receiving coil can ensure the accuracy of the line sequence detection of the dual-channel receiving coil to be tested, and ensure that the dual-channel receiving coil to be tested can be applied in accordance with the correct line sequence in the future to achieve the expected control effect, which is conducive to application in the production site.

[0056] Based on the above embodiment:

[0057] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the internal cable routing of a wiring module provided by the utility model.

[0058] In some embodiments, the shielding layer of the Nth cable of the standard two-way receiving coil 5 is connected to the third interface of the Nth standard input end of the wiring module 4, and the shielding layer of the Nth cable of the two-way receiving coil to be tested 6 is connected to the third interface of the Nth input end to be tested of the wiring module 4;

[0059] The grounding interface of the Nth output terminal of the wiring module 4 is grounded;

[0060] The wiring module 4 is further used to ground the shielding layer of the Nth cable of the standard two-way receiving coil 5 and to ground the shielding layer of the Nth cable of the two-way receiving coil to be tested 6 .

[0061] In this embodiment, it should be noted that, limited by the focus of the picture and to avoid confusion in the connection lines affecting the expression, Figure 2The connection between the wiring module 4 and the various cables in the standard two-way receiving coil 5, the various cables in the two-way receiving coil to be tested 6 and the parameter detection module 7 is omitted. Instead, the focus is on the wiring module 4 itself, and a setting diagram of each interface in each terminal is given to clearly express the connection between the wiring module 4 and other modules. Specifically, the first interface of the first standard input terminal 41 of the wiring module 4 is marked as A1, the second interface of the first standard input terminal 41 of the wiring module 4 is marked as A2, and the third interface of the first standard input terminal 41 of the wiring module 4 is marked as A3; the first interface of the second standard input terminal 42 of the wiring module 4 is marked as B1, the second interface of the second standard input terminal 42 of the wiring module 4 is marked as B2, and the third interface of the second standard input terminal 42 of the wiring module 4 is marked as B3; the first interface of the first input terminal 43 to be tested of the wiring module 4 is marked as C1, and the wiring module The second interface of the first input terminal 43 to be tested of the wiring module 4 is marked as C2, and the third interface of the first input terminal 43 to be tested of the wiring module 4 is marked as C3; the first interface of the second input terminal 44 to be tested of the wiring module 4 is marked as D1, the second interface of the second input terminal 44 to be tested of the wiring module 4 is marked as D1, and the third interface of the second input terminal 44 to be tested of the wiring module 4 is marked as D3; the first loop output interface of the first output terminal 45 of the wiring module 4 is marked as E1, the second loop output interface of the first output terminal 45 of the wiring module 4 is marked as E2, and the ground interface of the first output terminal 45 of the wiring module 4 is marked as E3; the first loop output interface of the second output terminal 46 of the wiring module 4 is marked as F1, the second loop output interface of the second output terminal 46 of the wiring module 4 is marked as F2, and the ground interface of the second output terminal 46 of the wiring module 4 is marked as F3.

[0062] pass Figure 2 As can be seen, the cable routing within wiring module 4 ensures that the shield layer of the Nth cable of the standard two-way receiving coil 5 is connected to the shield layer of the Nth cable of the two-way receiving coil under test 6. After the connection, the final ground connection is drawn through the ground interface of the Nth output end of wiring module 4. This arrangement can reduce power frequency interference introduced through the core wire of the Nth cable, facilitating practical applications.

[0063] In some embodiments, the polygon is a rectangle.

[0064] In this embodiment, the connecting cable 3 is arranged in a rectangular shape. The surrounding manner is simple and easy to implement. The first side and the second side can be specifically as follows: Figure 1 As shown, the first side is opposite to the second side. At any moment, the direction of the current flowing through the first side is opposite to the direction of the current flowing through the second side. In actual applications, the first side and the second side can be placed as far apart as possible by surrounding them, such as at a first preset distance.

[0065] In some embodiments, the power module 2 includes a transformer 21 and a current-limiting resistor R1;

[0066] The input end of the transformer 21 is used to connect to the AC power source 23; the output end of the transformer 21, the connecting cable 3 and the current limiting resistor R1 are connected in sequence.

[0067] In this embodiment, when the line sequence detection device is required to work, the input end of the transformer 21 is connected to the AC power supply 23, and the AC power supply 23 can output 220V AC power. Then, through the setting of the transformer 21, the output of the industrial frequency safe AC voltage can be guaranteed, and the AC current is passed through the connecting cable 3 to generate a magnetic field; the current limiting resistor R1 is used to limit the current to ensure the safe and stable operation of the circuit.

[0068] In some embodiments, a prompt module is further included;

[0069] The prompt module is connected to the parameter detection module 7 and is used to prompt the detection results of the circuit parameters.

[0070] In this embodiment, the prompt module can be set to clearly and intuitively prompt the detection results of the circuit parameters, so that technical personnel can grasp the detection situation in a timely manner. Specifically, the prompt module includes but is not limited to a voice prompt module to broadcast the above-mentioned detection results. There is no special limitation here, and it can be set according to the actual project.

[0071] In some embodiments, the parameter detection module 7 is an AC voltage detection module;

[0072] The wiring module 4 includes two first cables, two second cable groups and two first load resistors;

[0073] One end of the Nth first cable is connected to the first core wire of the Nth cable of the standard two-way receiving coil 5, and the other end is connected to the first core wire of the Nth cable of the two-way receiving coil to be tested 6;

[0074] The Nth second cable group includes two second cables, and one end of one of the second cables is connected to the second core wire of the Nth cable of the standard two-way receiving coil 5, and the other end of one of the second cables is respectively connected to one end of the Nth first load resistor and the AC voltage detection module, one end of another second cable is connected to the second core wire of the Nth cable of the two-way receiving coil 6 to be tested, and the other end of another second cable is respectively connected to the other end of the Nth first load resistor and the AC voltage detection module.

[0075] In this embodiment, combined with Figure 2As can be seen from the textual description, N is taken as one as an example for detailed explanation: one end of the first first cable is connected to the first core wire of the first cable 52 of the standard two-way receiving coil 5 through the first interface A1, and the other end of the first first cable is connected to the first core wire of the first cable 62 of the two-way receiving coil 6 to be tested through the first interface C1; one end of one of the second cables in the first second cable group is connected to the second core wire of the first cable 52 of the standard two-way receiving coil 5 through the second interface A2, and the other end of one of the second cables is respectively connected to one end of the first first load resistor R2 and the loop output interface E1, and one end of the other second cable is connected to the second core wire of the first cable 62 of the two-way receiving coil 6 to be tested through the second interface C2, and the other end of the other second cable is respectively connected to the other end of the first first load resistor R2 and the loop output interface E2. When N is two, the combination Figure 2 The same applies to the text description, so I will not go into details here.

[0076] It can be seen that the above configuration can simply and reliably realize the series connection of the Nth coil of the standard two-way receiving coil 5 and the Nth coil of the two-way receiving coil to be tested 6, and determine whether the Nth coil of the standard two-way receiving coil 5 and the Nth coil of the two-way receiving coil to be tested 6 are correctly connected in series by the voltage across the Nth first load resistor.

[0077] In some embodiments, the AC voltage detection module includes two AC voltmeters;

[0078] The Nth AC voltmeter is connected in parallel with the Nth first load resistor.

[0079] In this embodiment, combined with Figure 1 and Figure 2 It can be seen that the first AC voltmeter 71 can be connected to the first output terminal 45 (ie Figure 2 The loop output interface E1 and the loop output interface E2 of the first output terminal 45 are connected in parallel with the first load resistor R2, and the second AC voltmeter 72 can be connected through the second output terminal 46 (ie Figure 2 The loop output interface F1 and the loop output interface F2 of the second output end 46 are connected in parallel with the second first load resistor R3.

[0080] It can be seen that the voltage across the Nth first load resistor can be determined simply and reliably through the above-mentioned setting; when the Nth coil of the standard two-way receiving coil 5 and the Nth coil of the two-way receiving coil 6 to be tested are correctly connected in series, the reading of the Nth AC voltmeter is the same as the preset standard voltage value when the two-way receiving coil is calibrated within the allowable range of numerical fluctuation, and the preset standard voltage value is greater than 0 and significantly greater than the voltage value when the series connection is incorrect; when the Nth coil of the standard two-way receiving coil 5 and the Nth coil of the two-way receiving coil 6 to be tested are incorrectly connected in series, the reading of the Nth AC voltmeter will be smaller and approach 0, thereby reliably determining the correspondence between the first core wire and the second core wire of the Nth cable of the two-way receiving coil 6 to be tested and the output end and the input end of the Nth coil.

[0081] In some embodiments, the parameter detection module 7 is an AC current detection module;

[0082] The wiring module 4 includes two third cables, two fourth cable groups and two second load resistors;

[0083] One end of the Nth third cable is connected to the first core wire of the Nth cable of the standard two-way receiving coil 5, and the other end is connected to the first core wire of the Nth cable of the two-way receiving coil to be tested 6;

[0084] The Nth fourth cable group includes two fourth cables, and one end of one of the fourth cables is connected to the second core wire of the Nth cable of the standard two-way receiving coil 5, the other end of one of the fourth cables is connected to one end of the Nth second load resistor, and the other end of the Nth second load resistor is connected to the AC current detection module; one end of another fourth cable is connected to the second core wire of the Nth cable of the two-way receiving coil 6 to be tested, and the other end of the other fourth cable is connected to the AC current detection module.

[0085] In this embodiment, the arrangement of the wiring module 4 facilitates subsequent detection of the current flowing in the Nth series circuit to determine whether the Nth coil of the standard two-way receiving coil 5 and the Nth coil of the two-way receiving coil to be tested 6 are correctly connected in series.

[0086] In some embodiments, the AC current detection module includes two AC ammeters;

[0087] The Nth alternating current ammeter is connected in series with the Nth second load resistor, the Nth coil of the standard two-way receiving coil 5 and the Nth coil of the two-way receiving coil to be tested 6 .

[0088] In this embodiment, the above-described arrangement allows for simple and reliable determination of the current value flowing through the Nth series circuit. When the Nth coil of the standard two-way receiving coil 5 and the Nth coil of the two-way receiving coil 6 to be tested are correctly connected in series, the reading of the Nth AC voltmeter is the same as a preset current value within an allowable range of numerical fluctuation. The preset current value is greater than 0 and significantly greater than the current value when the series connection is incorrect. When the Nth coil of the standard two-way receiving coil 5 and the Nth coil of the two-way receiving coil 6 to be tested are incorrectly connected in series, the reading of the Nth AC ammeter will be smaller, approaching 0, thereby reliably determining the correspondence between the first and second core wires of the Nth cable of the two-way receiving coil 6 to be tested and the input and output ends of the Nth coil.

[0089] The utility model also provides a locomotive signal onboard system, comprising M dual-path receiving coils and the line sequence detection device for the dual-path receiving coils as described above, where M is an integer not less than 1.

[0090] For an introduction to the locomotive signal onboard system provided in this application, please refer to the embodiment of the line sequence detection device of the dual-path receiving coil described above, which will not be repeated here.

[0091] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

[0093] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A line sequence detection device for a dual-path receiving coil, characterized in that: It includes an operating table and a power supply module, a connecting cable, a wiring module, a standard two-way receiving coil and a parameter detection module arranged on the operating table; The positive output terminal of the power module is connected to the negative output terminal of the power module via the connecting cable to provide alternating current; The connecting cable is arranged on the operating table in a polygonal shape and has at least one set of parallel sides after being arranged; The standard two-way receiving coil is arranged on a first side of the connecting cable, a first core wire as an output end of an N-way cable of the standard two-way receiving coil is connected to a first interface of an N-way standard input end of the wiring module, and a second core wire as an input end of the N-way cable is connected to a second interface of the N-way standard input end of the wiring module, where N is one or two; The two-way receiving coil to be tested is arranged on a second side parallel to the first side, the first core wire of the N-th cable of the two-way receiving coil to be tested is connected to the first interface of the N-th input end to be tested of the wiring module, and the second core wire of the N-th cable is connected to the second interface of the N-th input end to be tested of the wiring module; The loop output interface of the Nth output end of the wiring module is connected to the parameter detection module, and is used for connecting the Nth coil of the standard two-way receiving coil and the Nth coil of the two-way receiving coil to be tested in series; The parameter detection module is used to detect the circuit parameters of the Nth series circuit after the series connection.

2. The line sequence detection device for a dual-path receiving coil according to claim 1, wherein: The shielding layer of the Nth cable of the standard two-way receiving coil is connected to the third interface of the Nth standard input end of the wiring module, and the shielding layer of the Nth cable of the two-way receiving coil to be tested is connected to the third interface of the Nth input end to be tested of the wiring module; The grounding interface of the Nth output terminal of the wiring module is grounded; The wiring module is further used to ground the shielding layer of the Nth cable of the standard two-way receiving coil, and to ground the shielding layer of the Nth cable of the two-way receiving coil to be tested.

3. The line sequence detection device for a dual-path receiving coil according to claim 1, wherein: The polygon is a rectangle.

4. The line sequence detection device for a dual-path receiving coil according to claim 1, wherein: The power supply module includes a transformer and a current limiting resistor; The input end of the transformer is used to connect to an AC power source; the output end of the transformer, the connecting cable and the current limiting resistor are connected in sequence.

5. The line sequence detection device for a dual-path receiving coil according to claim 1, wherein: Also includes a prompt module; The prompt module is connected to the parameter detection module and is used to prompt the detection result of the circuit parameter.

6. The line sequence detection device for a dual-path receiving coil according to any one of claims 1 to 5, characterized in that: The parameter detection module is an AC voltage detection module; The wiring module includes two first cables, two second cable groups and two first load resistors; One end of the Nth first cable is connected to the first core wire of the Nth cable of the standard two-way receiving coil, and the other end is connected to the first core wire of the Nth cable of the two-way receiving coil to be tested; The Nth second cable group includes two second cables, and one end of one of the second cables is connected to the second core wire of the Nth cable of the standard two-way receiving coil, the other end of one of the second cables is respectively connected to one end of the Nth first load resistor and the AC voltage detection module, one end of another second cable is connected to the second core wire of the Nth cable of the two-way receiving coil to be tested, and the other end of another second cable is respectively connected to the other end of the Nth first load resistor and the AC voltage detection module.

7. The line sequence detection device for a dual-path receiving coil according to claim 6, wherein: The AC voltage detection module includes two AC voltmeters; The Nth AC voltmeter is connected in parallel with the Nth first load resistor.

8. The line sequence detection device for a dual-path receiving coil according to any one of claims 1 to 5, characterized in that: The parameter detection module is an AC current detection module; The wiring module includes two third cables, two fourth cable groups and two second load resistors; One end of the Nth third cable is connected to the first core wire of the Nth cable of the standard two-way receiving coil, and the other end is connected to the first core wire of the Nth cable of the two-way receiving coil to be tested; The Nth fourth cable group includes two fourth cables, and one end of one of the fourth cables is connected to the second core wire of the Nth cable of the standard two-way receiving coil, the other end of one of the fourth cables is connected to one end of the Nth second load resistor, and the other end of the Nth second load resistor is connected to the AC current detection module; one end of another fourth cable is connected to the second core wire of the Nth cable of the two-way receiving coil to be tested, and the other end of the another fourth cable is connected to the AC current detection module.

9. The line sequence detection device for a dual-path receiving coil according to claim 8, characterized in that: The AC current detection module includes two AC ammeters; The Nth alternating current ammeter is connected in series with the Nth second load resistor, the Nth coil of the standard two-way receiving coil, and the Nth coil of the two-way receiving coil to be tested.

10. A locomotive signal vehicle-mounted system, characterized in that: The invention comprises M two-way receiving coils and also comprises a line sequence detection device for the two-way receiving coils according to any one of claims 1 to 9, wherein M is an integer not less than 1.

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