CN112834845B - Method for testing current sensitivity of locomotive signal equipment - Google Patents
Method for testing current sensitivity of locomotive signal equipment Download PDFInfo
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- CN112834845B CN112834845B CN202011640241.4A CN202011640241A CN112834845B CN 112834845 B CN112834845 B CN 112834845B CN 202011640241 A CN202011640241 A CN 202011640241A CN 112834845 B CN112834845 B CN 112834845B
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Abstract
The invention discloses a method for testing the current sensitivity of locomotive signal equipment, solves the problem that the current sensitivity of the locomotive signal equipment cannot be tested by the conventional portable code sender, and belongs to the technical field of locomotive signal equipment detection. The method comprises the following steps: quantifying the system and amplitude of the track circuit signal and the functional relationship between the installation height of the receiving coil and the short-circuit current of the steel rail; measuring the installation height of a locomotive signal receiving coil; and controlling a code transmitter to transmit a track circuit signal, observing a critical point of a lamp on locomotive signal equipment by adjusting the amplitude of the track circuit signal, and obtaining an equivalent steel rail short circuit current value corresponding to the critical point as current sensitivity according to the functional relation, the installation height and the transmitted amplitude corresponding to the critical point. The method does not need to take the locomotive signal equipment off the locomotive for testing, the current sensitivity of the locomotive signal can be determined by one person in the locomotive through wireless remote control by a detection person, the operation arrangement is convenient, and the operation efficiency is improved.
Description
Technical Field
The invention relates to the technical field of locomotive signal equipment detection, in particular to a method for testing current sensitivity of locomotive signal equipment.
Background
The sensitivity of locomotive signal is the minimum rail short-circuit current for stably decoding the locomotive signal equipment, and is an item using output display (namely, upper lamp display) as an index, and the locomotive signal equipment can normally receive the working current of a host under the most unfavorable condition of a track circuit, ensure the double-path reception of the locomotive signal and correctly and effectively decode the locomotive signal, thereby ensuring the driving safety. Too high sensitivity can cause the vehicle-mounted host computer to be easily influenced by interference signals, cause decoding errors and cause misoperation of locomotive signals. Too low sensitivity can result in lost codes of locomotive signals and delayed code receiving, and more serious consequences can be caused.
When locomotive signal equipment, GYK equipment and motor car ATP equipment are detected in the vehicle-mounted equipment workshops of the electric service sections, portable code sending equipment is required to be used at the loop line position of the non-track circuit; at present, a portable code sender or a code sending block used in each vehicle-mounted equipment workshop can only send codes to one receiving coil, a simple loop cannot be formed, and the operation efficiency is low; or the size of the code sending rod is large, so that the code sending rod is inconvenient to carry during outdoor operation. Neither the code transmitter nor the code rod can test the current sensitivity of the cab signal equipment.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the invention aims to provide a method for testing the current sensitivity of the locomotive signal equipment.
In order to achieve the above purpose, an embodiment of the present invention provides a method for testing current sensitivity of cab signal equipment, including a preparation step and a testing step: the preparing step includes: step S11, quantizing the system and amplitude of the track circuit signal, the functional relationship between the installation height of the receiving coil and the short-circuit current of the steel rail; the testing step comprises: step S21, measuring the installation height of the locomotive signal receiving coil; and step S22, controlling a code transmitter to transmit track circuit signals of a specified system, low frequency, carrier frequency and amplitude, observing a critical point of a lamp on locomotive signal equipment by adjusting the amplitude of the track circuit signals, and obtaining an equivalent steel rail short circuit current value corresponding to the critical point as current sensitivity according to the functional relation, the measured installation height and the transmitted amplitude corresponding to the critical point.
The invention discloses a locomotive signal equipment current sensitivity testing method, which is based on a code sending remote control device and a code sending device, a detector places the code sending device on a steel rail at the lower part of a locomotive signal receiving coil, the code sending device is wirelessly remotely controlled by the remote control device in a locomotive to send track circuit signals, the locomotive signal receiving coil receives the signals, the signals are transmitted to a locomotive signal mainboard through a junction box, the mainboard is used for decoding and executing corresponding operation, and whether the locomotive signal equipment current sensitivity is in a standard range or not is tested according to the system and amplitude of the track circuit signals, the equivalent steel rail short circuit current value corresponding to the installation height of the locomotive signals and the lighting condition of the locomotive signal equipment, so that the driving safety is ensured. The method is convenient to operate and arrange, is wireless and remote controlled, can realize on-vehicle detection without taking the locomotive signal equipment off the vehicle for testing, and improves the operation efficiency.
In addition, the method for testing the current sensitivity of the cab signal equipment according to the embodiment of the invention can also have the following additional technical characteristics:
further, in an embodiment of the present invention, the step S11 specifically includes the following steps: measuring and recording the installation height H0 of the receiving coil; closing the code sender, sending track circuit signals with a certain standard, low frequency, carrier frequency and amplitude by using a loop code sending box, measuring and recording the current short-circuit current value of the steel rail as A0, and the amplitude of the induction signal of the receiving coil as B0; closing the loop line code sending box, sending a track circuit signal by using the code sender, adjusting the amplitude of the signal, and recording that the amplitude of the track circuit signal sent by the current code sender is C0 when the amplitude of the induction signal of the receiving coil is B0; and repeating the test for many times to obtain multiple groups of data (Hx, Ax, Bx, Cx) (x is 0,1,2 …), and acquiring the functional relation between the receiving coil installation height Hx, the code transmitting signal amplitude Cx of the code transmitter and the steel rail short circuit current Ax under different track circuit signal systems by adopting a curve fitting mode:
Ax＝a*Hx+b*Cx(x＝0,1,2…)
wherein Ax is a steel rail short circuit current value, Hx is a mounting height, Cx is an amplitude of a track circuit signal, and a and b are constant coefficients.
Further, in an embodiment of the present invention, the step S21 further includes:
and judging whether the installation height meets the preset distance range between the bottom of the receiving coil and the rail surface, if not, adjusting the position of the code sender, and if so, executing the step S22.
Further, in an embodiment of the present invention, the step S22 further includes: step S221, establishing wireless communication between the remote control device and the code transmitter; step S222, placing the code transmitter on a steel rail at the lower part of a locomotive signal receiving coil; and step S223, wirelessly and remotely controlling the code transmitter to transmit the track circuit signal by using the remote control device.
Further, in an embodiment of the present invention, the step S221 specifically includes the following steps: the code sender sends own communication address outwards in a broadcasting mode, and after the remote control device receives the broadcast information, the code sender needing to establish communication connection is selected, and the first wireless communication module sends a connection request data frame; and after receiving the connection request data frame, the second wireless communication module of the code sender stops broadcasting and replies a connection confirmation data frame, thereby establishing wireless communication.
Further, in an embodiment of the present invention, the testing step further includes: and step S23, determining whether the current sensitivity is within a preset standard range.
Further, in an embodiment of the present invention, the remote control device includes a first control module, a display screen, a key, a first wireless communication module, and a voice module, where the display screen and the key are used to set a system, a low frequency, a carrier frequency, and an amplitude of a track circuit signal; the voice module is used for broadcasting the current track circuit signal system, the lamp color and the uplink and downlink information.
Further, in an embodiment of the present invention, the code transmitter includes a second control module, a second wireless communication module, a ranging module, and a track circuit signal code transmitting module, where the track circuit signal code transmitting module includes a transmitting antenna, and transmits a track circuit analog signal of a specified system, a low frequency, a carrier frequency, and an amplitude according to an instruction of the remote control device; and the distance measuring module is used for measuring the installation height of the locomotive signal receiving coil and finely adjusting the amplitude of the track circuit signal.
Further, in an embodiment of the present invention, the remote control device is a remote control device or an intelligent terminal; the first wireless communication module is a Bluetooth module, a WiFi module, a Lora module, an NFC module or a Zigbee module.
Further, in an embodiment of the present invention, the second wireless communication module is a bluetooth module, a WiFi module, a Lora module, an NFC module, or a Zigbee module.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a cab signal equipment current sensitivity testing method of one embodiment of the invention;
FIG. 2 is a flow chart of measuring the mounting height of a cab signal receiving coil according to one embodiment of the invention;
FIG. 3 is a schematic diagram of a remote control device according to an embodiment of the present invention;
FIG. 4 is a block diagram of a transmitter according to an embodiment of the present invention;
FIG. 5 is a broken line schematic diagram of the first embodiment of the present invention adjusting the sensitivity of amplitude determination;
fig. 6 is a flow chart of a system implementation of the second embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes a method for testing the current sensitivity of cab signal equipment according to an embodiment of the invention with reference to the accompanying drawings.
FIG. 1 is a flow chart of a cab signal equipment current sensitivity testing method of one embodiment of the invention.
As shown in fig. 1, the method for testing the current sensitivity of the cab signal equipment comprises the following preparation steps and testing steps:
the preparation steps comprise: and step S11, quantizing the system and amplitude of the track circuit signal, the functional relation between the installation height of the receiving coil and the short-circuit current of the steel rail.
Specifically, the quantization method comprises the following steps: firstly, measuring and recording the installation height H0 of a receiving coil by using a qualified locomotive signal receiving coil; and closing the code transmitter, transmitting track circuit signals with a certain system, low frequency, carrier frequency and amplitude by using a loop code transmitting box, measuring and recording the current short-circuit current value of the steel rail as A0, and the amplitude of the induction signal of the receiving coil as B0. Closing the loop line code sending box, sending a track circuit signal by using a code sender, adjusting the amplitude of the signal, and recording that the amplitude of the track circuit signal sent by the code sender is C0 when the amplitude of the induction signal of the receiving coil is B0; repeating the test for multiple times to obtain multiple groups of data (Hx, Ax, Bx, Cx) (x is 0,1,2 …); and acquiring a functional relation Ax between the installation height Hx of the receiving coil, the amplitude Cx of the code sending signal of the code sending device and the short-circuit current Ax of the steel rail in a curve fitting mode under different rail circuit signal systems (a and b are constant coefficients).
The testing steps comprise:
and step S21, measuring the installation height of the cab signal receiving coil.
Specifically, the code sender uses the ranging module to measure the installation height of the locomotive signal receiving coil, and determines whether the installation height meets the preset distance range between the bottom of the receiving coil and the rail surface, such as 155 ± 5mm (a person skilled in the art can adjust the installation height according to actual conditions, and does not specifically limit the installation height), if not, the position of the code sender is adjusted, and if so, step S22 is executed, and the amplitude of the code sending signal is adjusted according to the height, so as to obtain the accurate equivalent rail short-circuit current. The influence of the installation height of the receiving coil on the current sensitivity of the locomotive signal equipment is comprehensively considered, so that the measuring result is more accurate.
And step S22, controlling the code sender to send track circuit signals with specified system, low frequency, carrier frequency and amplitude, observing the critical point of the lamp on the locomotive signal equipment by adjusting the amplitude of the track circuit signals, and obtaining the equivalent steel rail short circuit current value corresponding to the critical point as the current sensitivity according to the functional relation, the measured installation height and the sent amplitude corresponding to the critical point.
Further, in an embodiment of the present invention, as shown in fig. 2, the step S22 further includes that S1 further includes:
step S221, wireless communication between the remote control device and the code transmitter is established.
As shown in fig. 3, the remote control device includes a first control module, a display screen, a key, a first wireless communication module, a voice module, and the like, wherein the first control module is mainly used for coordinating the overall operation of the remote control device; the display screen and the keys provide man-machine interaction, such as the mode, low frequency, carrier frequency and amplitude of the keys setting track and display circuit signals of the display screen; the first wireless communication unit is used for sending a control instruction and controlling the code sender to send a track circuit signal; the voice module is used for broadcasting the current code sending system, the lamp color and the uplink and downlink information when sending the track circuit signal.
Further, as shown in fig. 4, the code sender includes a second control module, a second wireless communication module, a ranging module, and a track circuit signal code sending module, where the second control module is mainly used to coordinate the operation of the code sender; the second wireless communication unit is mainly used for receiving a control instruction of the remote control device; the track circuit signal code sending module is internally provided with a sending antenna and sends track circuit analog signals of a specified system, low frequency, carrier frequency and amplitude according to a remote control device key instruction; the ranging module is used for measuring the installation height of the locomotive signal receiving coil and finely adjusting the code sending amplitude.
The first wireless communication module and the second wireless communication module can be a bluetooth module, a WiFi module, a Lora module, an NFC module or a Zigbee module.
Wherein, the range finding module can be laser range finding module or other range finding modules that can realize the range finding function.
Specifically, the communication address of the wireless communication module of each code transmitter is unique, and the code transmitter transmits its own communication address to the outside in a broadcast manner. And after receiving the broadcast information, the remote control device selects a code transmitter needing to establish communication connection and transmits a connection request data frame. And after receiving the connection request data frame, the code sender stops broadcasting and replies a connection confirmation data frame, so that connection is established, and wireless communication is realized. That is, the remote control device establishes communication connection with the second control module of the code transmitter to realize wireless communication.
And step S222, placing the code transmitter on a steel rail at the lower part of the locomotive signal receiving coil.
That is, the detector places the transmitter on the rail below a cab signal receiving coil that is within the transmission range of the track circuit signal transmitter module transmitting antenna.
In step S223, the transmitter is wirelessly remotely controlled by the remote control device to transmit the track circuit signal.
Specifically, after wireless communication connection is established, the detection personnel use remote control unit at the inside remote control code sender of locomotive, and the control code sender sends the track signal of simulation, and the operation can be accomplished to one man's operation, improves the convenience of detection efficiency and operation.
Further, the testing step further comprises: and S23, judging whether the current sensitivity is within a preset standard range.
Specifically, if the current sensitivity is within the preset standard range, the driving safety of the locomotive is indicated, and if the current sensitivity is not within the preset standard range, the locomotive sensitivity is too high, so that the vehicle-mounted host is easily affected by interference signals, and misoperation of locomotive signals may be caused.
It is understood that the specific workflow of the testing step S2 may be: the method comprises the steps that a detector controls a code transmitter to continuously adjust the track signal amplitude according to the installation height of a receiving coil obtained by measurement, such as the range of 0-6v (the specific code transmission amplitude range is different according to different product hardware designs, and is not specifically limited by the technical personnel in the field), the lamp-on condition of the locomotive signal vehicle-mounted equipment is observed, the lamp-on critical point of the locomotive signal vehicle-mounted equipment is determined, the installation height, the current track signal amplitude and the track circuit signal system are input into the functional relation formula, the equivalent steel rail short-circuit current is calculated, the measurement result is displayed on a display screen of a remote control device, meanwhile, a voice module prompts the current code transmission system, the lamp color and uplink and downlink information to help the detector to confirm the code transmission result, so that the current sensitivity of the locomotive signal vehicle-mounted equipment is determined and whether the current sensitivity is within the standard range or not is judged, and vehicle detection is realized, the locomotive signal equipment does not need to be taken down from the locomotive for testing, and the influence of the installation height of the receiving coil on the current sensitivity of the locomotive signal equipment is also comprehensively considered, so that the measuring result is more accurate.
The invention is further illustrated but not limited by the following two specific examples.
The first embodiment is as follows: and testing the current sensitivity of the cab signal equipment at the frequency shift of 550 Hz.
Establishing communication between a code sending remote control device and a controller of a code sender through respective wireless communication units;
the remote control device can be an intelligent terminal, the code sender sends own communication address outwards in a broadcasting mode, and after receiving the broadcast information, the remote control device selects the code sender needing to establish communication connection and sends a connection request data frame. And after receiving the connection request data frame, the code sender stops broadcasting and replies a connection confirmation data frame, so that connection is established, and wireless communication is realized.
And secondly, placing the code transmitter on a steel rail at the lower part near the locomotive signal receiving coil, wherein the locomotive signal receiving coil is positioned in the transmitting range of a transmitting antenna of a code transmitter track circuit signal code transmitting module.
And step three, the controller of the code transmitter measures the installation height H of the cab signal receiving coil by using a ranging module.
And step four, determining the functional relation between the amplitude and the installation height of the receiving coil under the condition of the quantized frequency shift of 550Hz and the short-circuit current of the steel rail.
Specifically, under the condition of 550Hz frequency shift, the code transmitter is closed, the loop code transmitting box is used for transmitting the 550Hz track circuit signal, and when the short-circuit current of the steel rail is A0-113 mA, the induction voltage value of the locomotive signal receiving coil is B0-15.9 +/-1.2 mV. And closing the loop line code sending box, adjusting the amplitude of the track circuit signal sent by the code sending device to ensure that the induction voltage value of the locomotive signal receiving coil is also B0, and recording the amplitude C0 of the track circuit signal of the code sending block at the moment. Adjusting the installation height H of the receiving coil and the short-circuit current C of the steel rail, repeating the steps, and testing multiple groups of data, thereby establishing the relationship between the installation height H of the receiving coil under the starting frequency shift of 550Hz, the amplitude C of the track circuit signal of the code transmitter and the short-circuit current A of the steel rail.
And fifthly, reading the keys by a controller of the remote control device, setting the system, the low frequency, the carrier frequency and the amplitude of the track circuit signal, sending the system, the low frequency, the carrier frequency and the amplitude to a wireless communication unit of the code sender through the wireless communication unit, transmitting the instruction to the controller of the code sender after the wireless communication unit of the code sender receives the instruction, and controlling the track circuit signal code sending module to send the track circuit signal with the specified system, low frequency, carrier frequency and amplitude by the controller.
And step six, determining equivalent steel rail short-circuit current according to the installation height of the locomotive signal receiving coil and the amplitude of the track circuit signal, and displaying the equivalent steel rail short-circuit current on a display screen.
Specifically, as shown in fig. 5, the amplitude (time) of the track circuit signal sent by the code transmitter is adjusted, the current sensitivity of the cab signal is determined according to the critical point of the upper lamp of the cab signal device, and whether the current sensitivity is within the standard range is determined, if the current sensitivity is within the preset standard range, the driving safety of the cab is indicated, and if the current sensitivity is not within the preset standard range, the sensitivity of the cab is too high, so that the vehicle-mounted host is easily affected by the interference signal, and the malfunction of the cab signal may be caused.
Example two: as shown in fig. 6, the locomotive signal current sensitivity is tested by using a mobile phone APP as a remote control device.
Step one, communication is established between the mobile phone APP and the controller of the code sender through respective wireless communication units.
Specifically, the wireless communication unit of the code sender adopts a Bluetooth module, the Bluetooth module broadcasts self information outwards after power is supplied, the APP is opened by the mobile phone, Bluetooth is started, a Bluetooth signal of the code sender is searched, the code sender needing to be connected is selected according to the Bluetooth name of the code sender, a connection request is sent, and the Bluetooth module of the code sender replies after receiving the connection request, so that connection is established and Bluetooth wireless communication is realized.
Secondly, placing the code transmitter on a steel rail at the lower part near a locomotive signal receiving coil, wherein the locomotive signal receiving coil is positioned in the transmitting range of a transmitting antenna of a code transmitter track circuit signal code transmitting module;
and step three, the controller of the code transmitter measures the installation height H of the cab signal receiving coil by using a ranging module.
And fourthly, quantifying the functional relation between the amplitude and the installation height of the receiving coil and the short-circuit current of the steel rail under the frequency shift of 550Hz, wherein the method is consistent with the method.
And step five, the mobile phone APP sets the system, low frequency, carrier frequency and amplitude of the track circuit signal and sends the track circuit signal to the Bluetooth wireless communication unit of the code sender through Bluetooth, the Bluetooth wireless communication unit of the code sender sends the command to the controller of the code sender after receiving the command, and the controller controls the track circuit signal code sending module to send the track circuit signal with the specified system, low frequency, carrier frequency and amplitude.
And step six, determining equivalent steel rail short-circuit current according to the installation height of the locomotive signal receiving coil and the amplitude of the track circuit signal, and displaying the equivalent steel rail short-circuit current on a display screen.
Specifically, as shown in fig. 5, the amplitude of the track circuit signal sent by the code sender is adjusted, the current sensitivity of the cab signal is determined according to the critical point of the lamp on the cab signal device, and whether the current sensitivity is within the standard range is determined, if the current sensitivity is within the preset standard range, the driving safety of the cab is indicated, and if not, the sensitivity of the cab is too high, which easily causes the vehicle-mounted host to be affected by the interference signal, possibly causing malfunction of the cab signal.
To sum up, the method for testing the current sensitivity of the locomotive signal equipment provided by the embodiment of the invention has the advantages that the remote control device and the code transmitter are communicated through the wireless communication module, after the code transmitter is placed on the steel rail at the lower part of a locomotive signal receiving coil, a detector controls the code transmitter to transmit a simulated track signal in a locomotive by using the remote control device, the code transmitting amplitude is continuously adjusted, the current sensitivity of the locomotive signal is determined according to the light-up condition of the locomotive signal equipment, one person can complete the operation, the detection can be completed by one arrangement, the locomotive signal equipment does not need to be taken down from the locomotive for testing, the on-vehicle detection can be realized, and the operation efficiency is improved; meanwhile, the code sender has small volume and light weight, and the operation and arrangement of detection personnel are very convenient.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A current sensitivity testing method for locomotive signal equipment is characterized by comprising the following preparation steps and testing steps:
the preparing step includes:
step S11, quantizing the system and amplitude of the track circuit signal, the functional relationship between the installation height of the receiving coil and the short-circuit current of the steel rail;
the testing step comprises:
step S21, measuring the installation height of the locomotive signal receiving coil;
and step S22, controlling a code transmitter to transmit track circuit signals of a specified system, low frequency, carrier frequency and amplitude, observing a critical point of a lamp on locomotive signal equipment by adjusting the amplitude of the track circuit signals, and obtaining an equivalent steel rail short circuit current value corresponding to the critical point as current sensitivity according to the functional relation, the measured installation height and the transmitted amplitude corresponding to the critical point.
2. The cab signal equipment current sensitivity testing method according to claim 1, wherein the step S11 specifically includes the steps of:
measuring and recording the installation height H0 of the receiving coil;
closing the code sender, sending track circuit signals with a certain standard, low frequency, carrier frequency and amplitude by using a loop code sending box, measuring and recording the current short-circuit current value of the steel rail as A0, and the amplitude of the induction signal of the receiving coil as B0;
closing the loop line code sending box, sending a track circuit signal by using the code sender, adjusting the amplitude of the signal, and recording that the amplitude of the track circuit signal sent by the current code sender is C0 when the amplitude of the induction signal of the receiving coil is B0;
and repeating the test for many times to obtain multiple groups of data (Hx, Ax, Bx, Cx) (x is 0,1,2 …), and acquiring the functional relation between the receiving coil installation height Hx, the code transmitting signal amplitude Cx of the code transmitter and the steel rail short circuit current Ax under different track circuit signal systems by adopting a curve fitting mode:
Ax＝a*Hx+b*Cx(x＝0,1,2…)
wherein Ax is a steel rail short circuit current value, Hx is a mounting height, Cx is an amplitude of a track circuit signal, and a and b are constant coefficients.
3. The cab signal device current sensitivity testing method of claim 1, wherein the step S21 further includes:
and judging whether the installation height meets the preset distance range between the bottom of the receiving coil and the rail surface, if not, adjusting the position of the code sender, and if so, executing the step S22.
4. The cab signal device current sensitivity testing method of claim 1, wherein the step S22 further includes:
step S221, establishing wireless communication between the remote control device and the code transmitter;
step S222, placing the code transmitter on a steel rail at the lower part of a locomotive signal receiving coil;
and step S223, wirelessly and remotely controlling the code transmitter to transmit the track circuit signal by using the remote control device.
5. The cab signal equipment current sensitivity testing method according to claim 4, wherein the step S221 specifically includes the steps of:
the code sender sends own communication address outwards in a broadcasting mode, and after the remote control device receives the broadcast information, the code sender needing to establish communication connection is selected, and the first wireless communication module sends a connection request data frame; and after receiving the connection request data frame, the second wireless communication module of the code sender stops broadcasting and replies a connection confirmation data frame, thereby establishing wireless communication.
6. The cab signal equipment current sensitivity testing method of claim 1, wherein the testing step further comprises:
and step S23, determining whether the current sensitivity is within a preset standard range.
7. The cab signal equipment current sensitivity testing method of claim 4, wherein the remote control device comprises a first control module, a display screen, a key, a first wireless communication module and a voice module, wherein the display screen and the key are used for setting a system, a low frequency, a carrier frequency and an amplitude of a track circuit signal; the voice module is used for broadcasting the current track circuit signal system, the lamp color and the uplink and downlink information.
8. The cab signal equipment current sensitivity test method according to claim 4, wherein the code transmitter comprises a second control module, a second wireless communication module, a distance measurement module and a track circuit signal code transmitting module, wherein the track circuit signal code transmitting module contains a transmitting antenna and transmits a track circuit analog signal of a specified system, low frequency, carrier frequency and amplitude according to an instruction of the remote control device; and the distance measuring module is used for measuring the installation height of the locomotive signal receiving coil and finely adjusting the amplitude of the track circuit signal.
9. The cab signal equipment current sensitivity testing method of claim 7,
the remote control device is an intelligent terminal;
the first wireless communication module is a Bluetooth module, a WiFi module, a Lora module, an NFC module or a Zigbee module.
10. The cab signal equipment current sensitivity testing method of claim 8,
the second wireless communication module is a Bluetooth module, a WiFi module, a Lora module, an NFC module or a Zigbee module.
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