CN111751704A - Standard motor train unit DI digital input signal fault detection device - Google Patents

Abstract

The invention is suitable for the technical field of railway transportation and provides a fault detection device for DI digital input signals of a standard motor train unit. The device includes: the input connection module is connected with a DI digital input board card which provides an input signal of DI digital quantity on the standard motor train unit; the signal display module is connected with the input connection module and used for lighting and prompting when the DI digital input board card has a fault; and the voltage detection module is connected with the input connection module and is used for detecting the voltage polarity and the voltage value of the input signal. After the input connection module is connected with the DI digital input board card, when the DI digital input board card has a fault, the signal display module is turned on, and the voltage polarity and the voltage value of the input signal are detected by the voltage detection module for further detecting the fault position, so that the line fault is judged more conveniently and accurately, and the fault detection efficiency is improved.

Description

Standard motor train unit DI digital input signal fault detection device

Technical Field

The invention belongs to the technical field of railway transportation, and particularly relates to a fault detection device for a DI digital input signal of a standard motor train unit.

Background

Digital Input (DI) board cards of a plurality of RIOM (radio integrated units) are installed on each vehicle of the standard motor train unit so as to acquire Digital Input signals when the motor train unit runs. When the standard motor train unit has an I/O module board card fault or a DI input line fault, the signal state of the corresponding DI digital input board card internal input variable is read through a connecting computer, and when the signal disappears or the digital signal input state is incorrect, a universal meter is required to be used for carrying out voltage test on the corresponding plug pin on the DI digital input board card. Because the contact pin of DI digital input integrated circuit board input plug is less and more dense, as shown in fig. 1, need to measure with universal meter needle winding iron wire or adopt tiny pen-shape metre, if two pen-shape metres are too close to, cause short circuit fault easily, in order to prevent to take place the short circuit phenomenon during measurement, need alone two hands to hold the needle of universal meter respectively and carry out the measurement of voltage polarity and voltage value, another person is holding the plug of awaiting measuring with the hand, lead to voltage measurement very difficult like this, and it takes longer to measure. Meanwhile, in order to accurately judge whether the wiring and the voltage value of the input circuit are correct or not through measurement, the polarity and the voltage value of the voltage need to be measured for many times, so that the measurement method is complicated.

Disclosure of Invention

In view of this, the embodiment of the invention provides a device for detecting a fault of a DI digital input signal of a standard motor train unit, and aims to solve the problems that detection is difficult and tedious and measurement takes longer time when fault detection is performed in the prior art.

The embodiment of the invention provides a device for detecting the fault of a DI digital input signal of a standard motor train unit, which comprises the following components:

the input connection module is connected with a DI digital input board card which provides an input signal of DI digital quantity on the standard motor train unit;

the signal display module is connected with the input connection module and used for lighting and prompting when the DI digital input board card has a fault;

and the voltage detection module is connected with the input connection module and is used for detecting the voltage polarity and the voltage value of the input signal.

Optionally, the method further includes:

the power supply module is connected with the input connection module, the signal display module and the voltage detection module and is used for supplying electric energy to the input connection module, the signal display module and the voltage detection module;

and the lamp testing module is respectively connected with the power supply module and the signal display module and is used for detecting whether the standard motor train unit DI digital input signal fault detection device has faults or not before the input signal fault detection.

Optionally, the method further includes:

the relay module is used for interlocking and connected between the light testing module and the voltage detection module, and the relay module is also connected with the power supply module.

Optionally, the method further includes:

and the circuit protection module is connected with the input connection module and the power supply module and is used for protecting the standard motor train unit DI digital input signal fault detection device.

Optionally, the method further includes: the shell upper cover and the shell lower cover;

the shell upper cover and the shell lower cover are buckled to form a cavity for accommodating all modules of the DI digital input signal fault detection device of the standard motor train unit.

Optionally, the input connection module is an input connector including a plurality of pins, and the pin type of the pin is a male pin;

and a first hole for installing the input connection module is formed in the end surface of one side of the lower cover of the shell.

Optionally, the input connector includes a plurality of digital input channels and a plurality of negative channels.

Optionally, the device further comprises a power button, a power indicator light and a light test button;

the power button is connected with the power module and is arranged in a second hole arranged on the upper cover of the shell;

the power indicator light is connected with the power module and arranged in a third hole formed in the upper cover of the shell, and the power indicator light is arranged around the power button;

the light test button is connected with the light test module and arranged in a fourth hole formed in the upper cover of the shell.

Optionally, the method further includes:

the indicating lamps are connected with the signal display module and are respectively arranged in a plurality of fifth holes formed in the upper cover of the shell;

the voltage testing terminals are respectively arranged in a plurality of sixth holes formed in the upper cover of the shell; the plurality of voltage test terminals comprise a plurality of negative voltage test terminals and a plurality of positive voltage test terminals;

the indicating lamp, the positive voltage testing terminal and the digital quantity input channel are correspondingly arranged.

Optionally, the device further comprises a fixing device;

the fixing device is arranged on one side where the input connector is located and is respectively arranged at the corresponding positions of the shell upper cover and the shell lower cover.

Compared with the prior art, the embodiment of the invention has the following beneficial effects: according to the embodiment of the invention, the input connecting module is connected with a DI digital input board card which provides an input signal of DI digital quantity on the motor train unit, when the DI digital input board card has a fault, the signal display module connected with the input connecting module is turned on to further detect the fault position, and the voltage polarity and the voltage value of the input signal are detected by the voltage detection module connected with the input connecting module, so that the line fault is more accurately judged, and the fault detection efficiency is improved, thereby solving the problems of difficulty and complexity in fault detection and longer measurement time consumption of the DI digital input board card in the prior art, and further detecting the fault of a peripheral line, so that a worker can more quickly determine the fault position to maintain.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic diagram of a prior art DI digital input signal fault detection scheme;

FIG. 2 is a schematic structural diagram of a DI digital input signal fault detection device of a standard motor train unit provided by the embodiment of the invention;

FIG. 3 is a schematic structural diagram of a DI digital input signal fault detection device of a standard motor train unit according to another embodiment of the invention;

fig. 4(1) is a schematic structural diagram of a housing of a standard motor train unit DI digital input signal fault detection device according to an embodiment of the invention;

fig. 4(2) is a schematic front view of a housing of a standard DI digital input signal fault detection device for a motor train unit according to an embodiment of the invention;

fig. 5(1) is a schematic circuit structure diagram of a part of a fault detection device for a DI digital input signal of a standard motor train unit according to an embodiment of the invention;

fig. 5(2) is a schematic circuit structure diagram of a part of a standard motor train unit DI digital input signal fault detection device provided by the embodiment of the invention.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

In order to explain the technical means of the present invention, the following description will be given by way of specific examples.

Example one

The invention provides a fault detection device for a DI digital input signal of a standard motor train unit, as shown in FIG. 2, the fault detection device for the DI digital input signal of the standard motor train unit can comprise:

the input connection module 1 is connected with a DI digital input board card which provides DI digital input signals on a standard motor train unit; the DI digital input board card is an input board card on the motor train unit, and the standard motor train unit DI digital input signal fault detection device is a device for detecting whether the DI digital input board card has faults or not.

The signal display module 2 is connected with the input connection module 1 and used for lighting and prompting when the DI digital input board card has a fault;

and the voltage detection module 3 is connected with the input connection module 1 and is used for detecting the voltage polarity and the voltage value of the input signal. The voltage detection module 3 can further detect the fault of the peripheral circuit connected with the motor train unit and the DI digital input board card when the DI digital input board card is normal. For example, when the voltage value detected by the voltage detection module 3 is 0V, it can be accurately determined that the peripheral line has a fault.

According to the standard motor train unit DI digital input signal fault detection device, the input connection module is connected with a DI digital input board card which provides an input signal of DI digital quantity on a motor train unit, when the DI digital input board card has a fault, the signal display module connected with the input connection module is turned on to further detect the fault position, and the voltage polarity and the voltage value of the input signal are detected by the voltage detection module connected with the input connection module, so that the line fault is judged more accurately, the fault detection efficiency is improved, the problems that the DI digital input board card is difficult to detect the fault, complicated and long in measurement time in the prior art are solved, and the fault of a peripheral line can be further detected, so that a worker can determine the fault position more quickly for maintenance.

Optionally, as shown in fig. 3, the standard digital input signal fault detection device for a motor train unit may further include:

a power module 4 connected to the input connection module 1, the signal display module 2 and the voltage detection module 3, and providing electric energy to the input connection module 1, the signal display module 2 and the voltage detection module 3;

and the lamp testing module 5 is respectively connected with the power supply module 4 and the signal display module 2 and is used for detecting whether a fault exists in the standard motor train unit DI digital quantity input signal fault detection device before the input signal fault is detected.

The light testing module 5 is a device for detecting whether the standard motor train unit DI digital input signal fault detection device is normal or not before the input signal fault detection. Optionally, the signal display module 2 on the standard motor train unit DI digital input signal fault detection device may include a plurality of LED indicator lamps, when the power supply module 4 supplies power, the test lamp module 5 is powered on, if the plurality of LED indicator lamps are all turned on, it is indicated that the standard motor train unit DI digital input signal fault detection device is normal, no fault exists, subsequent input signal fault detection may be performed, when the LED indicator lamps are not all turned on, it is indicated that the standard motor train unit DI digital input signal fault detection device has a fault, after the standard motor train unit DI digital input signal fault detection device passes through the test lamp module 5 again after maintenance is needed, the standard motor train unit DI digital input signal fault detection device is relieved of the fault, and subsequent input signal fault detection may be performed, so as to avoid abnormal input signal display due to the fault of the device itself, and thus a detection result is wrong.

Optionally, a relay module 6 for interlocking is connected between the light testing module 5 and the voltage detection module 3, and the relay module 6 is further connected with the power module 4.

When the interlocking is used for the light test module 5, the voltage detection module 3 is invalid, and when the voltage detection module 3 is used, the light test module 5 is invalid. The relay module 6 can prevent that all LED indicating lamps are lighted after a test lamp button is pressed by human misoperation to influence a test result when the DI digital quantity input signal fault of the standard motor train unit is processed.

Optionally, as shown in fig. 3, the standard digital input signal fault detection device for a motor train unit further includes: and the circuit protection module 7 is connected with the input connection module 1 and the power supply module 4 and is used for protecting the standard motor train unit DI digital input signal fault detection device.

The circuit of the circuit protection module 7 comprises a corresponding voltage current limiting protection circuit, so that the internal detection circuit of the standard motor train unit DI digital input signal fault detection device provided by the invention can be prevented from being damaged when overvoltage and overcurrent are caused by peripheral circuit faults of the standard motor train unit DI digital input signal board card.

The standard motor train unit DI digital input signal fault detection device can be an independent portable device, so that a shell can be arranged for placing all modules of the standard motor train unit DI digital input signal fault detection device. Alternatively, as shown in fig. 4(1), the housing may include a housing upper cover 81 and a housing lower cover 82;

the housing upper cover 81 and the housing lower cover 82 are buckled to form a cavity for accommodating all modules of the DI digital input signal fault detection device of the standard motor train unit.

Optionally, the material of shell upper cover 81 and shell lower cover 82 can be ABS plastics for the shell quality is light, easy dismounting, and trompil convenient and fast, and the closure is good, and has waterproof effect, can protect the inner circuit not by water and dust pollution, has improved standard EMUs DI digital quantity input signal fault detection device's stability.

Optionally, foot nuts for fixing the board card corresponding to the standard motor train unit DI digital input signal fault detection device are arranged in the four corners of the lower shell cover 82, and the nuts can be made of stainless steel. Meanwhile, the four corners of the housing upper cover 81 are provided with corresponding fixing bolts, the bolts can be made of metal, and 4 hexagon socket countersunk head bolts can be arranged.

Optionally, as shown in fig. 4(1), the input connection module 1 is an input connector 83 including a plurality of pins, the pin type of the pins is a male pin, and the input connector 83 has 48 pins; the pin type of the DI digital input board plug is a female pin, so that the input connector 83 can be connected with the DI digital input board, the connection with the DI digital input board plug is ensured to be reliable and firm, and the DI digital input signal is introduced into the DI digital input signal fault detection device for detecting the signal.

As shown in fig. 4(1), a first hole for mounting the input connection module 1 is formed on one side end surface of the housing lower cover 82, and the input connector 83 is passed through the first hole to facilitate connection with a DI digital input board.

Optionally, the input connector 83 includes a plurality of digital input channels and a plurality of negative channels. As shown in fig. 4(1), the input connector 83 has 16 digital quantity input channels and 4 negative channels distributed in total.

Optionally, as shown in fig. 4(1), a power button 84, a power indicator 85 and a light test button 86 are further disposed on the housing upper cover 81.

The power button 84, i.e. a power switch, is connected to the power module 4 and is disposed in the second hole disposed on the housing upper cover 81, i.e. the power module 4 inside the housing is disposed on the housing upper cover 81 through the power button 84, so as to conveniently supply power to the corresponding device through the power button 84.

Alternatively, the power button 84 may be a self-locking button.

The power indicator lamp 85 is connected to the power module 4 and disposed in a third hole provided in the housing upper cover 81, and the power indicator lamp 85 is disposed around the power button 84. When the power is turned on, the power indicator lamp 85 is turned on, and when the power is turned off, the power indicator lamp 85 is turned off.

The light test button 86 is connected to the light test module 5 and disposed in a fourth hole provided in the housing upper cover 81. The light test button 86 is a self-reset button.

Alternatively, the power button 84 and the light test button 86 may be provided at any position of the housing upper cover 81, as shown in fig. 4(1), and the power button 84 and the light test button 86 may be provided at any edge region of the housing upper cover 81 for convenience of operating the buttons.

Optionally, the sizes of the second hole, the third hole and the fourth hole may be set according to the size of a button or an indicator lamp that needs to be set, and the sizes are not limited in this application.

Optionally, the housing upper cover 81 further includes: a plurality of indicator lamps 87 connected to the signal display module, wherein the plurality of indicator lamps 87 are respectively disposed in a plurality of fifth holes disposed on the housing upper cover 81; alternatively, the plurality of indicator lights 87 may be LED signal lights, and the LED signal lights may be LED light emitting diodes.

Optionally, a mounting seat is further disposed below the plurality of indicator lights 87 and the power indicator lights 85 corresponding to the plurality of fifth holes and the third holes, and the mounting seat may be made of metal and used for mounting the plurality of indicator lights 87 and the power indicator lights 85.

Alternatively, the number of the indicator lights 87 may be 16, and the indicator lights are connected to the 16 digital quantity input channels of the input connector 83 in a one-to-one correspondence manner, and are respectively used for indicating whether an input signal is input into each input channel.

Optionally, the housing upper cover 81 further includes: a plurality of voltage test terminals 88 connected to the voltage detection module 3, the plurality of voltage test terminals 88 being respectively disposed in a plurality of sixth holes provided on the housing upper cover 81; the plurality of voltage test terminals 88 includes a plurality of negative voltage test terminals and a plurality of positive voltage test terminals.

Optionally, the voltage testing terminals 88 may be made of metal, and have an insulating protective sleeve outside the terminal, and there are 20 voltage testing terminals in total, where 16 of them are positive voltage testing terminals, and 4 are negative voltage testing terminals. 16 positive voltage test terminals are respectively connected with 16 digital quantity input channels in a one-to-one correspondence mode, 4 negative voltage test terminals are respectively connected with 4 negative electrode channels in a one-to-one correspondence mode, and namely the indicator lamp, the positive voltage test terminals and the digital quantity input channels are correspondingly arranged. As shown in fig. 4(2), 4 negative voltage test terminals, for example, Z8, Z16, Z24 and Z32, are provided on the right side of the housing upper cover 81, and are 4 negative voltage test terminals, i.e., the negative GND for identifying the input signal. The middle is provided with 16 positive voltage test terminals, for example, B2, B4, B6, B8, B10, B12, B14, B16, B18, B20, B22, B24, B26, B28, B30, and B32 are 16 positive voltage test terminals, that is, the positive electrodes of the input signals. And one indicator light 87 and one positive voltage test terminal are arranged in a group, 16 groups are arranged in total, and an array of 4 rows and 4 columns can be formed. It should be noted that, the arrangement of the 16 groups of indicator light-positive voltage test terminals on the upper cover of the housing can be set according to the requirement, and the above is only an example.

Optionally, labels are set on the upper cover 81 of the housing, near the positive voltage test terminal, the negative voltage test terminal, the indicator light, the power button, the light test button and the power indicator light, so as to indicate names of corresponding devices or corresponding channels.

Optionally, as shown in fig. 4(1), a fixing device 89 is further included; the fixing device 89 is disposed on the side where the input connector 83 is located, and is disposed at the corresponding positions of the housing upper cover 81 and the housing lower cover 82, respectively. Wherein, fixing device 89 can be the thread gluing area, including thread gluing area A face 891 and thread gluing area B face 892, one in thread gluing area A face 891 and thread gluing area B face 892 is the matte side one for the hook face, can bond, fixes standard EMUs DI digital input signal fault detection device and DI digital input integrated circuit board plug, prevents that standard EMUs DI digital input signal fault detection device and DI digital input integrated circuit board plug from dropping.

As shown in fig. 5(1) and 5(2), the input connector X1 included in the input connection module is 48 pins, wherein the pin B2 is connected with one end of a fuse F1, and the other end of the fuse F1 is respectively connected with one end of a resistor R1 and a first pin of a connector CN 7; the pins B4, B6, B8, B10, B12, B14, B16, B18, B20, B22, B24, B26, B28, B30 and B32 of the input connector X1 are connected in the same way as the pin B2, namely, the pins are respectively connected with one ends of fuses F2-F16, and the other ends of the fuses F2-F16 are respectively connected with one ends of resistors R2-R16 and other pins of the connector CN 7. The sixteenth pin of connector CN7 is left empty. Pins B2, B4, B6, B8, B10, B12, B14, B16, B18, B20, B22, B24, B26, B28, B30, and B32 of the input connector X1 are positive electrodes of the input signal. The pins Z8 and Z16 of the input connector X1 are respectively connected with the fourth pin and the thirteenth pin of the relay K9, the pins Z24 and Z32 are respectively connected with the fourth pin and the thirteenth pin of the relay K10, and other pins of the input connector X1 are vacant. Pins Z8, Z16, Z24 and Z32 of the input connector X1 are the negative poles of the four input signals.

The other end of the resistor R1 is connected to the fourth pin of the relay K1, and the other end of the resistor R2 is connected to the thirteenth pin of the relay K1. The sixth pin and the eleventh pin of the relay K1 are respectively connected with the cathode of the corresponding diode in the circuit protection module and the corresponding connector, and the anode of the diode is connected with the corresponding resistor and then connected with the fourth pin of the connector CN 2. For example, in fig. 5, the sixth pin of the relay K1 is connected to the cathode of the diode D3 and the fifth pin of the connector CN3, and the anode of the diode D3 is connected to the resistor R17 and then to the fourth pin of the CN 2. The resistor R17-the resistor R32 function as a current limiter, and the diodes D3-D18 function as an isolation function for limiting the direction of current and preventing high voltage from being connected into the circuit in series. The relay module comprises ten relays in total, wherein the relays K2-K8 are connected in the same way as the relay K1. First pins of the relays K1-K10 are connected and then connected with a fourth pin of the connector CN2, first pins of the relays K1-K5 are connected and then also connected with a cathode of a diode D1, an anode of the diode D1 is grounded, first pins of the relays K6-K10 are connected and then also connected with a cathode of a diode D2, and an anode of the diode D2 is grounded. The sixteenth pin of the relay K1-K10 is grounded after being connected, and the eighth pin and the ninth pin of the relays K9 and K10 are grounded.

The sixth pin and the eleventh pin of the relay K9 are connected to the first pins of the connectors CN3 and CN4, respectively, and the sixth pin and the eleventh pin of the relay K10 are connected to the first pins of the connectors CN5 and CN6, respectively.

The first pin of the connector CN1 is grounded, the second pin is connected with a positive power supply and is also connected with the first pin of the connector CN2, the fifth pin of the connector CN2 is grounded, and a resistor R33 is connected between the second pin and the third pin in series.

The positive power is connected to the one end of the power button that power module includes, and the other end and the second pin of connector CN2' of power button are connected, and the one end of the light button that tries that the light module includes is connected the power anodal, and the other end and the fourth pin of connector CN2' of trying the light button are connected, and the positive terminal and the third pin of connector CN2' of power indicator are connected, and the negative pole end ground connection of power indicator. When the power button is pressed, CN2' is powered on and the power indicator lights.

The positive terminals of the LEDs 1-16 included in the signal display module are respectively connected to the corresponding connectors, for example, the positive terminals of the LEDs 1-4 are respectively connected to the second pin, the third pin, the fourth pin and the fifth pin of the connector CN3', and the negative terminals of the LEDs 1-4 are connected to the first pin of the connector CN 3'; the positive terminals of the light emitting diodes LED5-LED8 are respectively connected with the second pin, the third pin, the fourth pin and the fifth pin of the connector CN4', and the negative terminals of the light emitting diodes LED5-LED8 are connected with the first pin of the connector CN 4'; the positive terminals of the light emitting diodes LED9-LED12 are respectively connected with the second pin, the third pin, the fourth pin and the fifth pin of the connector CN6', and the negative terminals of the light emitting diodes LED9-LED12 are connected with the first pin of the connector CN 6'; the positive terminals of the light emitting diodes LED13-LED16 are respectively connected with the second pin, the third pin, the fourth pin and the fifth pin of the connector CN5', and the negative terminals of the light emitting diodes LED13-LED16 are connected with the first pin of the connector CN 5'.

The positive voltage test terminal of the plurality of voltage test terminals connected by the voltage detection module is connected to a corresponding pin of the connector CN7', for example, the voltage test terminal B2 is connected to a first pin of the connector CN7', the voltage test terminal B4 is connected to a second pin of the connector CN7', and so on. Four of the negative voltage test terminals are connected to the first pins of the connectors CN3', CN4', CN5', CN6', respectively.

It should be noted that, the connector CN2 and the connector CN2 'are respectively a male pin connector and a female pin connector which are matched with each other, similarly, the connector CN3 and the connector CN3' are respectively a male pin connector and a female pin connector which are matched with each other, the connector CN4 and the connector CN4 'are respectively a male pin connector and a female pin connector which are matched with each other, the connector CN5 and the connector CN5' are respectively a male pin connector and a female pin connector which are matched with each other, the connector CN6 and the connector CN6 'are respectively a male pin connector and a female pin connector which are matched with each other, and the connector CN7 and the connector CN7' are respectively a male pin connector and a female pin connector which are matched with each other. Thus, the input connector is connected with the relay and the voltage test terminal through the fuse, the relay is connected with the indicating lamp, and 16 digital quantity input channels and 4 negative electrode channels are formed.

When the standard motor train unit DI digital input signal fault detection device provided by the invention is used for fault detection, the fault detection can be carried out according to the following steps:

(1) first check if its appearance and the identification on the corresponding channel are missing. After the fact that the digital input signal fault detection device is complete and complete is confirmed, a power supply is switched on (namely a power supply button is pressed), a corresponding power supply indicator lamp is lightened, then a lamp test button is pressed, and all electric quantity of 16 LED light-emitting diodes on the standard motor train unit DI digital input signal fault detection device shows that the standard motor train unit DI digital input signal fault detection device is normal and reliable in function and free of faults, and subsequent DI digital input signal fault processing operation can be conducted.

(2) The input connector of the standard motor train unit DI digital input signal fault detection device is connected with the DI digital input signal board card plug, after the connection is firm and reliable, the input connector of the standard motor train unit DI digital input signal fault detection device is electrically connected with the DI digital input signal board card plug, and input signals of all DI digital signal input channels on the DI digital input signal board card plug are input into the standard motor train unit DI digital input signal fault detection device.

(3) The DI digital input signal fault detection device of the standard motor train unit is connected with the DI digital input signal fault board card through the two-side lap joint of the sticky buckle A, B of the fixing device.

(4) And determining an LED corresponding to the fault channel, checking whether the LED is lighted, if the LED is not lighted, judging that the peripheral circuit is in fault, and the DI digital input signal board card is normal, and if the LED is lighted, judging that the DI digital input signal board card is in fault, and the peripheral circuit is normal.

When the peripheral circuit is failed, in order to further detect the peripheral circuit, a universal meter can be adopted to detect the voltage polarity and the voltage value of the failed channel. If the voltage of the multimeter is displayed as 0V, the peripheral line fault can be accurately judged. And after the peripheral line fault is judged, disconnecting the standard motor train unit DI digital input signal fault detection device from the DI digital input signal board card plug, disconnecting the power supply of the standard motor train unit DI digital input signal fault detection device, and shutting down the motor train unit.

The standard motor train unit DI digital input signal fault detection device can be used for detecting the peripheral circuit of a DI digital input board card when a standard motor train unit DI digital input peripheral circuit is debugged, so that the DI digital input signal board card is prevented from being damaged due to overvoltage or overcurrent caused by the fault of the peripheral circuit, and the DI digital input signal board card is protected, and the detection steps are as follows:

the steps 1-3 are the same as the steps 1-3 in the fault detection, and are not described in detail herein.

(4) And operating peripheral circuits of the DI digital input signal board card to enable corresponding input signals to act, and lighting the corresponding channel LED on the corresponding DI digital input signal fault detection device of the standard motor train unit according to the electrical design logic of the standard motor train unit. And meanwhile, judging whether the label of the label corresponding to the LED on the channel is consistent with the number of the signal input channel of the design circuit, and if not, indicating that the peripheral circuit of the DI digital quantity input signal board card is in wrong wiring. And after the wiring verification of the peripheral circuit of the DI digital input signal board card is modified, verifying by using the standard motor train unit DI digital input signal fault detection device again until the states of the LED indicating lamps of the corresponding channels are consistent with the DI digital input signal.

(5) And detecting the voltage polarity and the voltage value of an input channel corresponding to the DI digital input signal fault detection device of the standard motor train unit by adopting a universal meter, and checking whether the voltage polarity and the voltage value of the channel corresponding to the DI digital input board card are met.

(6) And after the input signals of all channels of the one-to-one pair of DI digital input signal board cards are detected correctly according to the steps, disconnecting the standard motor train unit DI digital input signal fault detection device from the DI digital input signal board card plug, disconnecting the power supply of the DI digital input signal fault detection device, and shutting down the motor train unit.

The standard motor train unit DI digital input signal fault detection device is connected with a DI digital input board card which provides an input signal of DI digital quantity on the motor train unit through the input connection module, and detects whether a fault exists on the DI digital input board card. When the DI digital input board card has a fault, the signal display module connected with the input connection module is turned on to further detect the fault position, and the voltage polarity and the voltage value of the input signal are detected by the voltage detection module connected with the input connection module, so that the line fault is judged more accurately, the fault detection efficiency is improved, and the problems that the fault detection of the DI digital input board card in the prior art is difficult and tedious and the measurement consumes longer time are solved. And each signal input channel of the standard motor train unit DI digital input signal fault detection device corresponds to one voltage test terminal and one indicator lamp, and the voltage test terminals are provided with terminal marks to ensure the one-to-one correspondence of signal input, so that whether the signal of the input channel is correct or not can be judged through the indicator lamps of the corresponding channels, and the voltage test terminals are provided to facilitate staff to measure the voltage polarity and the voltage value of the input signal.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a standard EMUs DI digital quantity input signal fault detection device which characterized in that includes:

the input connection module is connected with a DI digital input board card which provides an input signal of DI digital quantity on the standard motor train unit;

the signal display module is connected with the input connection module and used for lighting and prompting when the DI digital input board card has a fault;

and the voltage detection module is connected with the input connection module and is used for detecting the voltage polarity and the voltage value of the input signal.

2. The standard motor train unit DI digital input signal fault detection device of claim 1, further comprising:

the power supply module is connected with the input connection module, the signal display module and the voltage detection module and is used for supplying electric energy to the input connection module, the signal display module and the voltage detection module;

and the lamp testing module is respectively connected with the power supply module and the signal display module and is used for detecting whether the standard motor train unit DI digital input signal fault detection device has faults or not before the input signal fault detection.

3. The standard motor train unit DI digital input signal fault detection device of claim 2, further comprising:

the relay module is used for interlocking and connected between the light testing module and the voltage detection module, and the relay module is also connected with the power supply module.

4. The standard motor train unit DI digital input signal fault detection device of claim 1, further comprising:

and the circuit protection module is connected with the input connection module and the power supply module and is used for protecting the standard motor train unit DI digital input signal fault detection device.

5. The standard motor train unit DI digital input signal fault detection device of claim 2, further comprising: the shell upper cover and the shell lower cover;

the shell upper cover and the shell lower cover are buckled to form a cavity for accommodating all modules of the DI digital input signal fault detection device of the standard motor train unit.

6. The device for detecting the fault of the DI digital input signal of the standard motor train unit as claimed in claim 5, wherein the input connection module is an input connector comprising a plurality of pins, and the pin type of the pins is a male pin;

and a first hole for installing the input connection module is formed in the end surface of one side of the lower cover of the shell.

7. The standard multiple unit DI digital input signal fault detection device of claim 6, wherein the input connector comprises a plurality of digital input channels and a plurality of negative channels.

8. The standard motor train unit DI digital input signal fault detection device of claim 5, further comprising a power button, a power indicator light and a light test button;

the power button is connected with the power module and is arranged in a second hole arranged on the upper cover of the shell;

the power indicator light is connected with the power module and arranged in a third hole formed in the upper cover of the shell, and the power indicator light is arranged around the power button;

the light test button is connected with the light test module and arranged in a fourth hole formed in the upper cover of the shell.

9. The standard motor train unit DI digital input signal fault detection device of claim 5, further comprising:

the indicating lamps are connected with the signal display module and are respectively arranged in a plurality of fifth holes formed in the upper cover of the shell;

the voltage testing terminals are respectively arranged in a plurality of sixth holes formed in the upper cover of the shell; the plurality of voltage test terminals comprise a plurality of negative voltage test terminals and a plurality of positive voltage test terminals;

the indicating lamp, the positive voltage testing terminal and the digital quantity input channel are correspondingly arranged.

10. The standard multiple unit DI digital input signal fault detection device of claim 6, further comprising a fixing device;

the fixing device is arranged on one side where the input connector is located and is respectively arranged at the corresponding positions of the shell upper cover and the shell lower cover.

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