CN110887999B

CN110887999B - Train detector

Info

Publication number: CN110887999B
Application number: CN201811044753.7A
Authority: CN
Inventors: 张永波; 刘磊; 刘玉铃; 张荣佳; 张秀纯; 薛旭
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2018-09-07
Filing date: 2018-09-07
Publication date: 2022-04-19
Anticipated expiration: 2038-09-07
Also published as: CN110887999A

Abstract

The invention provides a train detector, comprising: the device comprises a plugging end, an end tester and a detection device; the inserting end is provided with a plurality of detection pins, and each detection pin is inserted into one detection jack on the end connector of the carriage and is electrically connected with the contact piece in the detection jack; the detection devices are arranged on the end part tester, the number of the detection devices is multiple, and each detection device is electrically connected with one detection pin; the detection device is used for sending out a detection signal when detecting that a detection pin electrically connected with the detection device has voltage; a plurality of detection pins can be connected with a plurality of first cables on the carriage simultaneously, can detect a plurality of first cables on the carriage simultaneously, easy operation, and labour saving and time saving.

Description

Train detector

Technical Field

The invention relates to the technical field of rail train line detection equipment, in particular to a train detector.

Background

Electric appliances such as an air conditioner, a lighting lamp and the like are arranged on the rail train, and the electric appliances are electrically connected with the electric appliance in the previous carriage or a controller positioned at the head of the train through a connecting circuit; in the production process of train, each carriage of constituteing the train is processed alone, and the one end that makes interconnecting link with add electrical apparatus and be connected man-hour, and the other end of interconnecting link extends to the tip in carriage to be connected with the connector of carriage tip, be provided with a plurality of jacks on the connector, install the contact piece in each jack, the connecting wire route comprises a plurality of cables, and each cable is connected with a contact piece. When the vehicles are grouped, the connectors between adjacent carriages are connected through a connecting cable, one end of the connecting cable is inserted into the jack on the connector at the front part of the previous carriage, and the other end of the connecting cable is inserted into the jack on the connector at the rear part of the next carriage; when the electric appliances in the carriage work, the working state information of the electric appliances can be transmitted to the controllers of the adjacent carriages or the car heads through the connecting cables. In order to ensure that after the electric appliances in the carriage act, the adjacent carriages or the vehicle heads can obtain corresponding working state information, the connecting circuit and the electric appliances need to be detected before vehicle marshalling is carried out, and therefore how to detect the connecting circuit and the electric appliances becomes a hotspot of research.

In the prior art, the universal meter is often used for detecting the connection condition between a connection line and an electrical appliance. When the universal meter is used, a black meter pen of the universal meter is grounded, a red meter pen is contacted with a contact piece in a jack on the connector, then an electric appliance in a carriage is controlled to work, and the working state information of the electric appliance is detected by detecting the voltage on the contact piece; if the voltage of the contact piece is zero, the electric appliance does not work normally, and if the voltage of the contact piece is not zero, the electric appliance works normally.

However, the interior electrical apparatus that uses in the carriage is more, has a plurality of cables in consequently the interconnecting link, and the contact piece in a jack on each cable and the connector is connected, during the detection, need detect the contact piece in the jack one by one through the universal meter, and the operation is complicated, and wastes time and energy.

Disclosure of Invention

In view of this, the present invention provides a train detector to solve the technical problems of complex operation, time consuming and labor consuming, which are caused by the need of using a multimeter to detect the contact pieces in the jacks one by one.

The invention provides a train detector, comprising: the device comprises a plugging end, an end tester and a detection device; the inserting end is provided with a plurality of detection pins, and each detection pin is inserted into one detection jack on the end connector of the carriage and is electrically connected with the contact piece in the detection jack; the detection devices are arranged on the end tester, the number of the detection devices is multiple, and each detection device is electrically connected with one detection pin; the detection device is used for sending out a detection signal when detecting that the detection pin electrically connected with the detection device has voltage.

According to the train detector, preferably, the train detector comprises an upper computer, the detection device comprises a light-emitting device and a photosensitive sensor, one end of the light-emitting device is grounded, and the other end of the light-emitting device is electrically connected with the detection pin; the photosensitive sensor is electrically connected with the upper computer to send a detection signal to the upper computer when the light-emitting device is detected to emit light.

In the train detector as described above, preferably, the plug end is further provided with a power-on pin, and the power-on pin is inserted into a power-on jack on the connector and electrically connected to the contact piece in the power-on jack; the end tester is also provided with a power-on device, the power-on device is electrically connected with the upper computer, and the power-on device is used for supplying power to the power-on pin when the upper computer sends a power-on signal.

The train detector as described above, preferably, the power-on device includes a power-on relay, a first coil of the power-on relay is electrically connected to the upper computer, a first normally open contact on the power-on relay is connected to the power supply, and a second normally open contact on the power-on relay is electrically connected to the power-on pin; when the upper computer sends a power-on signal, a first coil of the power-on relay is electrified, so that the first normally open contact is in contact with the second normally open contact.

The train detector as described above, preferably, the first normally open contact is connected to the power supply through a power-on fuse device, so as to disconnect the first normally open contact from the power supply when the current supplied by the power supply to the first normally open contact reaches a first preset value.

The train detector as described above, preferably, the power-on fuse includes a self-restoring fuse, one end of the self-restoring fuse is connected to the first normally open contact, and the other end of the self-restoring fuse is connected to the power supply.

According to the train detector, preferably, the plugging end is further provided with a first connecting pin and a second connecting pin, the first connecting pin is plugged into a first connecting plug hole on the connector, and the second connecting pin is plugged into a second connecting plug hole of the connector; the end tester is provided with a connecting device, and the first connecting pin and the second connecting pin are electrically connected with the connecting device; the connecting device is electrically connected with the upper computer and is used for controlling the first connecting pin to be electrically connected with the second connecting pin when the upper computer sends out a connecting signal.

In the train detector as described above, preferably, the connection device includes a connection relay, a second coil of the connection relay is electrically connected to the upper computer, a third normally open contact on the connection relay is electrically connected to the first connection pin, and a fourth normally open contact on the connection relay is electrically connected to the second connection pin; when the upper computer sends a connection signal, the second coil of the connection relay is electrified, so that the third normally open contact is in contact with the fourth normally open contact.

The train detector as described above, preferably, the end tester further includes a controller electrically connected to the upper electrical connection and the second coil of the connection relay; when the upper computer sends out a connection signal, the controller controls the second coil of the connection relay to be electrified.

The train detector as described above, preferably, the connection device further includes a connection fuse, and the fourth normally open contact is connected to the second connection pin through the connection fuse, so as to disconnect the fourth normally open contact from the second connection pin when the current between the first connection pin and the second connection pin reaches a second preset value.

According to the train detector provided by the invention, the insertion end is provided with the plurality of detection pins, and each detection pin is inserted into one jack on the connector and is electrically connected with the contact piece in the detection jack so as to electrically connect the detection pin with the first cable on the carriage; the detection device is provided with a plurality of detection devices, each detection device is electrically connected with one detection pin, and the detection device sends out a detection signal when detecting that the detection pin connected with the detection device has voltage; a plurality of detection pins can be connected with a plurality of first cables on the carriage simultaneously, can detect a plurality of first cables on the carriage simultaneously, easy operation, and labour saving and time saving.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an end tester in a train detector according to an embodiment of the present invention;

fig. 2 is a schematic connection diagram of a train detector according to another embodiment of the present invention.

Description of reference numerals:

10. an end tester;

101. detecting a pin;

102. a detection device;

1021. a photosensitive sensor;

1022. a light emitting device;

103. powering up a pin;

104. a power source;

105. energizing a relay;

1051. a first coil;

1052. a first normally open contact;

1053. a second normally open contact;

1054. powering up the safety device;

106. a first connection pin;

107. a second connection pin;

108. connecting a relay;

1081. a second coil;

1082. a third normally open contact;

1083. a fourth normally open contact;

1084. connecting a safety device;

20. an upper computer;

30. a carriage;

40. a first end tester;

50. a second end tester;

60. a CAN data bus.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of an end tester in a train detector according to an embodiment of the present invention; fig. 2 is a schematic connection diagram of a train detector according to another embodiment of the present invention.

Please refer to fig. 1 and fig. 2. The present embodiment provides a train detector, including: a plug end, an end tester 10 and a detection device 102; the inserting end is provided with a plurality of detection pins 101, and each detection pin 101 is inserted into one detection jack on one end connector of the carriage 30 and is electrically connected with a contact piece in the detection jack; the detection device 102 is arranged on the end tester 10, the number of the detection devices 102 is multiple, and each detection device 102 is electrically connected with one detection pin 101; the detecting device 102 is used for sending out a detection signal when detecting that the detecting pin 101 electrically connected with the detecting device has voltage.

It should be noted that, a first electrical appliance connected to an adjacent car is provided in a car 30 of the rail train, and when the first electrical appliance in the car 30 works, an electrical signal is sent to the adjacent car or a car head, so that the adjacent car or the car head obtains the working state information of the car 30; a first cable electrically connected with a first electric appliance is arranged in the carriage 30, extends towards the end part of the carriage 30 and is electrically connected with a contact piece in a connecting jack on a connector at the end part of the carriage 30; correspondingly, when the vehicles are grouped, one end of the connecting cable is electrically connected with the contact piece in the connecting jack on the end connector of the front carriage 30, and the other end of the connecting cable is electrically connected with the contact piece in the connecting jack on the end connector of the rear carriage 30, so that the first electric appliances on the adjacent carriages are electrically connected through the connecting cable.

Alternatively, the detecting device 102 may be various, as long as it can send out a detecting signal when detecting that the voltage is on the detecting pin 101 connected thereto; for example: the detection device 102 may include a buzzer, one end of the buzzer is grounded, the other end of the buzzer is electrically connected to the detection pin 101, and when the first cable corresponding to the detection jack is electrified, the buzzer makes a sound to prompt an operator that the first cable connected to the detection device 102 is electrified. The first cable is electrified through sound prompt, so that the first cable is convenient to find. Or the detection device 102 comprises an indicator light, one end of the indicator light is grounded, the other end of the indicator light is electrically connected with the detection pin 101, and the indicator light emits light when the first cable connected with the detection pin 101 is electrified.

Further, the plugging terminal may include a mounting board on which the plurality of detection pins 101 are disposed at intervals, and each detection pin 101 protrudes from the connection terminal of the mounting board. The positions of the detection pins 101 on the mounting plate are reasonably set, so that when the mounting plate covers the outer side of the connector, each detection pin 101 on the mounting plate is inserted into one detection jack on the connector, and a plurality of first cables in the carriage 30 can be detected conveniently and simultaneously.

The train detector provided by the embodiment is used as follows: installing the plugging end on a connector at the end part of the carriage 30, and simultaneously respectively plugging a plurality of detection pins 101 on the plugging end into different detection jacks on the connector; at this time, the first electrical appliance on the carriage 30 is controlled to work, and whether the first electrical appliance corresponding to each detection pin 101 works normally is determined by observing whether the detection device 102 connected with each detection pin 101 sends out a detection signal; the detection can be performed on a plurality of first cables simultaneously.

In the train detector provided by the embodiment, the plurality of detection pins 101 are arranged on the plugging end, and each detection pin 101 is plugged into one jack on the connector and is electrically connected with the contact piece in the detection jack so as to electrically connect the detection pin 101 with the first cable on the carriage 30; the number of the detection devices 102 is multiple, each detection device 102 is electrically connected with one detection pin 101, and the detection device 102 sends out a detection signal when detecting that the detection pin 101 connected with the detection device has voltage; a plurality of detection pins 101 can be connected with a plurality of first cables on the carriage 30 simultaneously, can detect a plurality of first cables on the carriage 30 simultaneously, easy operation, and labour saving and time saving.

Optionally, the train detector comprises an upper computer 20, the detection device 102 comprises a light emitting device 1022 and a photosensitive sensor 1021, one end of the light emitting device 1022 is grounded, and the other end of the light emitting device 1022 is electrically connected with the detection pin 101; the photosensitive sensor 1021 is electrically connected with the upper computer 20 to send out a detection signal to the upper computer 20 when detecting the light emitting device 1022 emitting light. The upper computer 20 can be arranged in a laboratory far away from the carriage 30 so as to avoid poor working environment caused by detection near the carriage 30.

Alternatively, the upper computer 20 may be a desktop computer, a notebook computer, or the like, which is disposed in the laboratory; the upper computer 20 stores a detection program, and when the upper computer 20 receives a detection signal sent by the detection device 102, the detection program on the upper computer 20 works, so that the display interface on the upper computer 20 changes. For example: when the detection device 102 sends a first detection signal to the upper computer 20, the color of the display frame corresponding to the detection device 102 changes to prompt a worker that a first cable corresponding to the display frame is electrified, namely that the first electrical appliance works normally; therefore, the working state information of each first electric appliance in the carriage 30 can be intuitively obtained through the display interface.

Alternatively, the light emitting device 1022 may be a lighting lamp, a light emitting diode, or the like capable of emitting light after being powered. Furthermore, the detecting device 102 further includes a sealing cover, which is a light-tight cover and is disposed outside one of the light emitting devices 1022 and the photosensitive sensor 1021 corresponding to the light emitting device 1022, so as to prevent external light from affecting the photosensitive sensor 1021.

Optionally, the plug end is further provided with a power-on pin 103, and the power-on pin 103 is inserted into a power-on jack on the connector and electrically connected with a contact piece in the power-on jack; the end tester 10 is further provided with a power-on device, the power-on device is electrically connected with the upper computer 20, and the power-on device is used for supplying power to the power-on pin 103 when the upper computer 20 sends a power-on signal. The train detector can also supply power to a second cable on the carriage 30 which is electrically connected with the contact sheet in the power-on jack, so that the function of the train detector is enriched.

It should be noted that, a second electrical appliance is provided in the carriage 30, the second electrical appliance is connected to one end of a second cable, and the second cable extends to the end of the carriage 30 and is connected to a contact piece in the plus-power jack on the connector; when a train is marshalled, one end of the connecting cable is connected with the power-on jack, and the other end of the connecting cable is connected with the power-on jack corresponding to the second cable on the previous carriage 30, so as to supply power to the second electrical appliance on the current carriage 30 through the second cable on the previous carriage 30.

Alternatively, the power-on device may be various, as long as it can supply power to the power-on pin 103 after receiving the power-on signal sent by the upper computer 20; for example: the power-up device may include a first motor, a first gear, and a first rack, the end tester 10 includes a housing, the first motor is disposed on the housing, the first gear is connected to a spindle of the first motor, the first rack is slidably connected to the housing, and the first rack is engaged with the first gear; one end of the first rack is provided with a first connecting sheet, the first connecting sheet is connected with a power supply 104, the shell is provided with a second connecting sheet, and the second connecting sheet is connected with a power-on pin 103; when the upper computer 20 sends a power-on signal, the first motor works to further drive the first gear to rotate so as to drive the first rack to move towards the second connecting sheet until the first connecting sheet is contacted with the second connecting sheet to realize the connection of the power-on pin 103 and the power supply 104, and then the power supply 104 supplies power to the power-on pin 103; when the power-on pin 103 is electrified, the second cable is electrified, and at the moment, the second electrical appliance works; whether the connection between the second cable and the second electrical appliance is good or not can be known by observing the working state of the second electrical appliance.

Optionally, the power-on device includes a power-on relay 105, a first coil 1051 of the power-on relay 105 is electrically connected with the upper computer 20, a first normally open contact 1052 on the power-on relay 105 is connected with the power supply 104, and a second normally open contact 1053 on the power-on relay 105 is electrically connected with the power-on pin 103; when the upper computer 20 sends out a power-on signal, the first coil 1051 of the power-on relay 105 is electrified, so that the first normally open contact 1052 is in contact with the second normally open contact 1053. The power supply 104 is controlled to be connected with or disconnected from the power-on pin 103 through the power-on relay 105, and the movement speed is high.

Optionally, the first normally open contact 1052 is connected to the power source 104 through a power fuse 1054 to open the connection between the first normally open contact 1052 and the power source 104 when the current delivered by the power source 104 to the first normally open contact 1052 reaches a first preset value. The power-on safety device 1054 can disconnect the power supply 104 from the second cable when the current supplied by the power supply 104 to the second cable reaches the first preset value, so as to prevent the second cable and the second electrical appliance connected to the second cable from being burnt due to the excessive current of the second cable.

Optionally, the power-on fuse 1054 may include a fuse, a melting point of the fuse is low, one end of the fuse is connected to the first normally-open contact 1052, another end of the fuse is connected to the power source 104, and when a current flowing through the fuse reaches a first preset value, the fuse generates heat to melt itself, so as to cut off the connection between the first normally-open contact 1052 and the power source 104, and then stop supplying power to the power-on pin 103 and the second cable.

Optionally, the first preset value is a maximum current value that ensures that the second cable and the second electrical appliance connected to the second cable are not damaged.

Further, the power-on fuse 1054 comprises a self-healing fuse, one end of which is connected to the first normally open contact 1052, and the other end of which is connected to the power source 104. The self-recovery fuse can cut off the connection between the first normally-open contact 1052 and the power supply 104 when the current reaches the first preset value, and the self-recovery fuse can automatically connect the first normally-open contact 1052 and the power supply 104 again after a period of time, so that the power-on fuse 1054 does not need to be replaced, and the operation complexity caused by frequently replacing the power-on fuse 1054 is avoided.

It should be noted that: the self-healing fuse is composed of a specially treated polymeric resin and conductive particles distributed therein. Under normal operation, the polymer resin tightly binds the conductive particles outside the crystalline structure to form a chain-shaped conductive path, the self-recovery fuse is in a low-resistance state, the heat energy generated by the current flowing through the self-recovery fuse on the circuit is small, and the crystalline structure cannot be changed. When the current reaches a first preset value, the polymer resin is melted by the heat generated by the current flowing through the self-recovery fuse, the volume is rapidly increased to form a high-resistance state, and the working current is rapidly reduced, so that the circuit is limited and protected. After a period of time, the polymerization tree in the self-recovery fuse is cooled and crystallized again, the volume is shrunk, the conductive particles form a conductive path again, and the self-recovery fuse is recovered to be in a low-resistance state, so that the circuit is protected without manual replacement.

Optionally, the plugging end is further provided with a first connection pin 106 and a second connection pin 107, the first connection pin 106 is inserted into a first connection jack on the connector, and the second connection pin 107 is inserted into a second connection jack of the connector; the end tester 10 is provided with a connecting device, and the first connecting pin 106 and the second connecting pin 107 are electrically connected with the connecting device; the connecting device is electrically connected with the upper computer 20 and is used for controlling the first connecting pin 106 to be electrically connected with the second connecting pin 107 when the upper computer 20 sends out a connecting signal. The train detector can realize the connection of the first connection jack and the second connection jack on the connector, so that the functions of the train detector are further enriched.

It should be noted that, a third electrical appliance is provided in the carriage 30, one end of a third cable is connected to the third electrical appliance, the other end of the third cable is connected to a contact piece in a first connection jack on the end connector of the carriage 30, a power supply device for supplying power to the third electrical appliance is provided in the carriage 30, one end of a fourth cable is connected to the power supply device, and the other end of the fourth cable is connected to a contact piece in a second connection jack on the end connector of the carriage 30; in the grouping of vehicles, the front car 30 row has a short-circuit cable connected to the first connection jack and the second connection jack, and the connection between the third cable and the fourth cable is made through the short-circuit cable.

Alternatively, the connection device may be various as long as it is ensured that the connection device can connect the first connection pin 106 with the second connection pin 107 when receiving the connection signal; for example: the connecting device can comprise a second motor, a second gear and a second rack, wherein the second motor is arranged on the shell, the second gear is arranged on a spindle of the second motor, and the second rack is connected with the shell in a sliding manner; a third connecting sheet is arranged on the second rack, a fourth connecting sheet is arranged on the shell, the third connecting sheet is connected with the first connecting pin 106, and the fourth connecting sheet is connected with the second connecting pin 107; the second motor is electrically connected with the upper computer 20, when the upper computer 20 sends a connection signal, the second motor drives the second gear to rotate, the second gear drives the rack to move towards the fourth connecting sheet until the third connecting sheet abuts against the fourth connecting sheet, so that the first connecting pin 106 is connected with the second connecting pin 107.

Optionally, the connection device includes a connection relay 108, a second coil 1081 of the connection relay 108 is electrically connected to the upper computer 20, a third normally open contact 1082 on the connection relay 108 is electrically connected to the first connection pin 106, and a fourth normally open contact 1083 on the connection relay 108 is electrically connected to the second connection pin 107; when the upper computer 20 sends out a connection signal, the second coil 1081 of the connection relay 108 is electrified, so that the third normally open contact 1082 is in contact with the fourth normally open contact 1083. The connection relay 108 can be used to quickly connect and disconnect the first connection pin 106 and the second connection pin 107.

Optionally, the connection device further includes a connection fuse 1084, and the fourth normally-open contact 1083 is connected to the second connection pin 107 through the connection fuse 1084, so as to disconnect the third normally-open contact 1082 from the first connection pin 106 when the current flowing between the first connection pin 106 and the second connection pin 107 reaches a second preset value. So as to prevent the third cable, the fourth cable and the third electric appliance from being burnt due to overlarge current of the third cable and the fourth cable.

Optionally, the connection fuse 1084 is substantially identical in structure to the power fuse 1054, and the description of the power fuse 1054 is omitted herein.

Optionally, the end tester 10 further comprises a controller electrically connected to the upper electrical connection and the second coil 1081 of the connection relay 108; when the upper computer 20 sends out a connection signal, the controller controls the second coil 1081 of the connection relay 108 to be electrified. The second coil 1081 connected with the relay 108 is controlled to be electrified through the controller arranged on the end tester 10, namely, the upper computer 20 is connected with the relay 108 to work through the indirect control of the controller, and the upper computer 20 only needs to transmit a control signal to the controller, so that the transmitted current and voltage between the upper computer 20 and the end tester 10 can be reduced.

Further, the controller may be a single chip microcomputer or a programmable logic controller, etc.

In other embodiments, the power-on device is electrically connected to the upper computer 20 through the controller, and the connection device is also electrically connected to the upper computer 20 through the controller; during detection, the plugging end is installed on a connector at the end part of the carriage 30, meanwhile, all detection pins 101 on the plugging end are respectively inserted into different detection jacks, correspondingly, a power-on pin 103 on the plugging end is inserted into the power-on jack on the connector, a first connection pin 106 on the plugging end is inserted into a first connection jack on the connector, and a second connection pin 107 is inserted into a second connection jack on the connector; at this time, whether the detection pin 101 is electrified or not can be observed through a display interface on the upper computer 20; a power-on signal is sent to the controller through the upper computer 20, the controller controls the first coil 1051 of the power-on relay 105 to be electrified, so that the first normally-open contact 1052 is contacted with the second normally-open contact 1053, namely, the power supply 104 is connected with the power-on pin 103, the power supply 104 can supply power to the second cable, and whether the connection between the second cable and the second electrical appliance is good or not can be known by observing the working state of the second electrical appliance in the carriage 30; carry the connection signal through host computer 20 to the controller, the second coil 1081 of controller control connection relay 108 is electrified, and then makes third normally open contact 1082 and fourth normally open contact 1083 contact, makes first connection pin 106 and second connection pin 107 connect, and the power supply unit in carriage 30 supplies power to the third electrical apparatus through fourth cable and third cable this moment, can learn the break-make of third cable and fourth cable through the operating condition who observes the third electrical apparatus.

In other embodiments, the train detector includes two end testers 10, wherein a first end tester 40 is adapted to connect with a coupler at the front end of the car 30, a second end tester 50 is adapted to connect with a coupler at the rear end of the car 30, and the first end tester 40 is connected with the upper computer 20, the second end tester 50 is connected with the first end tester 40 through the CAN data bus 60, so that the detection signal obtained by the second end portion tester 50 is transmitted to the upper computer 20 through the CAN data bus 60 and the first end portion tester 40 in sequence, meanwhile, the upper computer 20 CAN transmit the power-on signal and the connection signal to the second end tester 50 through the first end tester 40 and the CAN data bus 60, so as to realize the simultaneous detection of the connectors at the two ends of the carriage 30, the cables on the carriage 30 can be detected from both ends of the carriage 30 at the same time, and the detection speed is increased. It should be noted that the first end tester 40 and the second end tester 50 are substantially similar to the end tester 10 described above, and therefore, the detailed description thereof is omitted. In addition, the first end tester 40 is connected to the connector at one end of the carriage 30 through a first plugging end, and the second end tester 50 is connected to the connector at the other end of the carriage 30 through a second plugging end, wherein the first plugging end and the second plugging end are similar to the plugging end described above and are not repeated herein.

In the present invention, unless otherwise specifically stated, the terms "mounted," "connected," "fixed," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected internally or in any other manner known to those skilled in the art, unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A train detector, comprising: the device comprises a plugging end, an end tester and a detection device; the inserting end is provided with a plurality of detection pins, and each detection pin is inserted into one detection jack on the end connector of the carriage and is electrically connected with the contact piece in the detection jack; the detection devices are arranged on the end tester, the number of the detection devices is multiple, and each detection device is electrically connected with one detection pin; the detection device is used for sending out a detection signal when detecting that the detection pin electrically connected with the detection device has voltage;

the train detector comprises an upper computer, the detection device comprises a light-emitting device and a photosensitive sensor, one end of the light-emitting device is grounded, and the other end of the light-emitting device is electrically connected with the detection pin; the photosensitive sensor is electrically connected with the upper computer so as to send a detection signal to the upper computer when the light-emitting device is detected to emit light;

the inserting end is also provided with a first connecting pin and a second connecting pin, the first connecting pin is inserted into a first connecting inserting hole in the connector, and the second connecting pin is inserted into a second connecting inserting hole in the connector; the end tester is provided with a connecting device, and the first connecting pin and the second connecting pin are electrically connected with the connecting device; the connecting device is electrically connected with the upper computer and is used for controlling the first connecting pin to be electrically connected with the second connecting pin when the upper computer sends out a connecting signal.

2. The train detector of claim 1, wherein the plug end is further provided with a power-on pin, and the power-on pin is inserted into a power-on jack on the connector and electrically connected with a contact piece in the power-on jack; the end tester is also provided with a power-on device, the power-on device is electrically connected with the upper computer, and the power-on device is used for supplying power to the power-on pin when the upper computer sends a power-on signal.

3. The train detector of claim 2, wherein the power-up device comprises a power-up relay, a first coil of the power-up relay is electrically connected with the upper computer, a first normally open contact on the power-up relay is connected with a power source, and a second normally open contact on the power-up relay is electrically connected with the power-up pin; when the upper computer sends a power-on signal, a first coil of the power-on relay is electrified, so that the first normally open contact is in contact with the second normally open contact.

4. The train detector of claim 3, wherein the first normally open contact is connected to the power source through a power-on fuse to break the connection between the first normally open contact and the power source when the current delivered by the power source to the first normally open contact reaches a first preset value.

5. The train detector of claim 4, wherein the powered fuse comprises a self-restoring fuse having one end connected to the first normally open contact and another end connected to the power source.

6. The train detector of claim 1, wherein the connection device comprises a connection relay, a second coil of the connection relay is electrically connected with the upper computer, a third normally open contact on the connection relay is electrically connected with the first connection pin, and a fourth normally open contact on the connection relay is electrically connected with the second connection pin; when the upper computer sends a connection signal, the second coil of the connection relay is electrified, so that the third normally open contact is in contact with the fourth normally open contact.

7. The train detector of claim 6 wherein the end tester further comprises a controller electrically connected to the upper electrical connection and the second coil of the connection relay; when the upper computer sends out a connection signal, the controller controls the second coil of the connection relay to be electrified.

8. The train detector of claim 6, wherein the connection device further comprises a connection fuse, and the fourth normally open contact is connected to the second connection pin through the connection fuse to disconnect the fourth normally open contact from the second connection pin when the current between the first connection pin and the second connection pin reaches a second preset value.