A failure detection device of a train equipment and a train

Abstract

The application discloses a kind of train equipment fault detection device and train, it is related to the field of fault detection, by setting controller, processor, multiple first transformer and multiple and logic circuit, each equipment on train has a transformer and and logic circuit corresponding, according to certain order series connection each circuit: controller-and logic circuit-transformer-and logic circuit-.....-transformer-processor, and logic circuit is based on the logical and judgment of equipment's fault signal and the output signal of last and logic circuit (or controller), is sent to next and logic circuit by transformer, the logical judgment of last and logic circuit and result is sent to processor by transformer, processor is based on last logical and result judging whether these equipment exists fault, can accurately find whether there is equipment failure on train.In addition, the way of replacing relay by transformer reduces the size and energy consumption of equipment, and improves the anti-interference ability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fault detection, in particular to a train equipment fault detection device and a train. BACKGROUND

[0002] With the increasing application of rail transit, the total length of the train is getting longer and longer, especially for long trains such as high-speed rail and motor train unit, due to the signal attenuation will increase with the transmission path lengthening, when the equipment on the train fails, the fault signal generated by the equipment may be distorted due to signal attenuation, resulting in the train system and train personnel unable to perceive that there is a device failure, therefore, how to ensure the accurate, safe and reliable transmission of signals in the train is a challenge. In the prior art, a relay is usually set as the transmitting end of the fault signal of the equipment to transmit the fault signal generated by the equipment at 110V voltage. This way has the following disadvantages:

[0003] 1. The voltage required by the relay is high, and the energy consumption is large;

[0004] 2. The volume and weight of the relay are usually large, which is not conducive to daily maintenance and replacement;

[0005] 3. The anti-interference ability of the relay is poor, and it is easy to be mis-triggered when encountering external interference. SUMMARY

[0006] The purpose of the present application is to provide a train equipment fault detection device and a train, which can accurately detect whether there is a device failure on the train, and also reduces the volume and energy consumption of the device and improves the anti-interference ability.

[0007] To solve the above technical problems, the present application provides a train equipment fault detection device, comprising:

[0008] a controller, a processor, N first transformers and N AND logic circuits, N is a positive integer;

[0009] The first input end of the N AND logic circuits is connected to N devices on the train one by one;

[0010] The output end of the N AND logic circuits is connected to the primary side of the N first transformers one by one;

[0011] The N AND logic circuits are sorted in a predetermined order;

[0012] The second input end of the first AND logic circuit is connected to the output end of the controller;

[0013] The second input end of the other N-1 AND logic circuits is connected to the secondary side of the first transformer corresponding to the previous AND logic circuit;

[0014] The secondary side of the first transformer corresponding to the logic circuit is connected with the processor;

[0015] The processor is configured to determine the fault state of the N devices according to the received signals;

[0016] The logic circuit is configured to output a signal indicating no fault when the signals at the two input ends are both signals indicating no fault, and output a signal indicating fault otherwise;

[0017] The controller is configured to output a signal indicating no fault to drive the first logic circuit.

[0018] Preferably, the logic circuit is a triode;

[0019] The first end of the primary side of the first transformer corresponding to the triode is connected with the output positive terminal of the device corresponding to the triode;

[0020] The base of the first triode is connected with the output end of the controller, the collector is connected with the second end of the primary side of the first transformer corresponding to the first triode, and the emitter is connected with the output negative terminal of the device corresponding to the first triode;

[0021] The base of the other N-1 triodes is connected with the first end of the secondary side of the first transformer corresponding to the previous triode, the collector is connected with the second end of the primary side of the first transformer corresponding to the triode itself, and the emitter is connected with the output negative terminal of the device corresponding to the triode itself and the second end of the secondary side of the first transformer corresponding to the previous triode, respectively.

[0022] Preferably, the application further comprises:

[0023] N first diodes, N second diodes, N first resistors and N second resistors corresponding to the N logic circuits one by one;

[0024] The negative poles of the first diodes are connected with the output positive terminals of the devices corresponding to the logic circuits and the first ends of the primary sides of the first transformers corresponding to the logic circuits, respectively, and the positive poles of the first diodes are connected with the positive poles of the second diodes and the first ends of the first resistors, respectively;

[0025] The negative poles of the second diodes are connected with the second ends of the first resistors, the second ends of the primary sides of the first transformers, and the output negative terminals of the devices, respectively;

[0026] The second resistors are connected in series with the bases of the triodes.

[0027] Preferably, the application further comprises N input filter circuits;

[0028] N input filter circuits are arranged one-to-one corresponding to N AND logic circuits and the devices corresponding to the AND logic circuits;

[0029] The input filter circuit is used for filtering the signal output by the device.

[0030] Preferably, the input filter circuit comprises:

[0031] A third resistor, a fourth resistor and a first capacitor;

[0032] One end of the third resistor is connected to the positive output terminal of the device;

[0033] One end of the fourth resistor is connected to the negative output terminal of the device;

[0034] One end of the first capacitor is connected to the other end of the third resistor and the first end of the primary side of the first transformer, respectively, and the other end of the first capacitor is connected to the other end of the fourth resistor and the first input terminal of the AND logic circuit, respectively.

[0035] Preferably, it further comprises an output filter circuit;

[0036] The input terminal of the output filter circuit is connected to the secondary side of the first transformer corresponding to the last AND logic circuit, and the output terminal of the output filter circuit is connected to the processor;

[0037] The output filter circuit is used for filtering the signal output by the last first transformer.

[0038] Preferably, the output filter circuit comprises:

[0039] A second capacitor and a third diode;

[0040] The positive electrode of the third diode is connected to the first end of the secondary side of the last first transformer;

[0041] One end of the second capacitor is connected to the cathode of the third diode and the positive input terminal of the processor, respectively;

[0042] The other end of the second capacitor is connected to the second end of the secondary side of the last first transformer and the negative input terminal of the processor, respectively.

[0043] Preferably, the controller is a crystal oscillator;

[0044] The first end of the crystal oscillator is connected to the second input terminal of the first AND logic circuit, and the second end of the crystal oscillator is grounded.

[0045] Preferably, it further comprises:

[0046] a field effect transistor, a fourth diode, a fifth diode, a fifth resistor, and a second transformer;

[0047] The negative pole of the fourth diode is connected with a power supply and the first end of the primary side of the second transformer respectively, and the positive pole of the fourth diode is connected with the positive pole of the fifth diode and the first end of the fifth resistor respectively.

[0048] The negative pole of the fifth diode is connected with the second end of the fifth resistor, the second end of the primary side of the second transformer, and the drain of the field effect transistor respectively.

[0049] The gate of the field effect transistor is connected with the output end of the controller, and the source of the field effect transistor is grounded.

[0050] The application further provides a train comprising a train body and N devices, and further comprising the train device fault detection device as described above.

[0051] The N devices and the train device fault detection device are arranged in the train.

[0052] The N devices are connected with the train device fault detection device.

[0053] The application provides a train device fault detection device and a train, and relates to the field of fault detection. Each device on the train is provided with a transformer and an AND logic circuit in sequence according to a certain order: controller-AND logic circuit-transformer-AND logic circuit-...-transformer-processor. The AND logic circuit performs logical AND judgment based on a fault signal of the device and an output signal of the previous AND logic circuit (or the controller), and sends the result to the next AND logic circuit through the transformer. The logical judgment result of the last AND logic circuit is sent to the processor through the transformer. The processor judges whether the devices have faults based on the final logical result, and can accurately find out whether there is a fault device on the train. In addition, the transformer is used to replace the relay, which reduces the size and energy consumption of the device and improves the anti-interference ability. BRIEF DESCRIPTION OF DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0055] Figure 1 The structure diagram of the train device fault detection device provided by the present application is shown in the figure.

[0056] Figure 2 Another structure schematic diagram of a train equipment fault detection device is provided in the present application. DETAILED DESCRIPTION

[0057] The core of the present application is to provide a train equipment fault detection device and a train, which can accurately find out whether there is a fault on the train, and also reduces the size and energy consumption of the device and improves the anti-interference capability.

[0058] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0059] In the field of rail transit, how to safely and reliably transmit safety-related signals has always been a challenge because the signal quality decreases with the increase of the signal transmission distance, and the signal attenuation degree becomes larger and the interference becomes larger with the increase of the car section of the rail train and the lengthening of the total length of the train. For safety-related signals (usually signals indicating faults), if the signal attenuation is too large to cause signal distortion, the train system and train staff will get false safety-related information, for example, a signal indicating a fault is mistakenly considered as a signal indicating normality, or a signal sent by A device is mistakenly considered as a signal sent by B device, or a signal indicating X kind of fault is mistakenly considered as a signal indicating Y kind of fault. All these reasons make the system and personnel unable to perceive the actual safety or fault problems of the train equipment, affecting the safety and stability of the train operation.

[0060] In order to ensure that the signal can be safely and reliably transmitted, the prior art usually uses a relay as the signal transmitting end of the device, based on the characteristics of small electromagnetic interference and large transmitting power of the relay, effectively improving the signal quality and reducing the influence of signal attenuation and interference. Although this method can also allow the signal to be safely and reliably transmitted, the anti-interference ability of the relay coupling method itself is poor, and the relay is prone to malfunction due to external interference; the relay needs a large voltage, usually about 110V, and has high energy consumption; and the relay itself has a large size, which is not conducive to daily maintenance, repair and replacement.

[0061] To solve the above technical problems, please refer to Figure 1 , Figure 1 A structure schematic diagram of a train equipment fault detection device provided in the present application comprises:

[0062] The controller 1, the processor 4, N first transformers 3 and N AND logic circuits 2, N is a positive integer;

[0063] The first input end of the N AND logic circuits 2 is connected with N devices on the train one by one;

[0064] The output end of the N AND logic circuits 2 is connected with the primary side of the N first transformers 3 one by one;

[0065] The N AND logic circuits 2 are sorted according to a preset order;

[0066] The second input end of the first AND logic circuit 2 is connected with the output end of the controller 1;

[0067] The second input end of the other N-1 AND logic circuits 2 is connected with the secondary side of the corresponding first transformer 3 of the previous AND logic circuit 2;

[0068] The secondary side of the corresponding first transformer 3 of the last AND logic circuit 2 is connected with the processor 4;

[0069] The processor 4 is used for determining the fault state of the N devices according to the received signals;

[0070] The AND logic circuit 2 is used for outputting a signal indicating no fault when the signals at the two input ends are both signals indicating no fault, otherwise outputting a signal indicating fault;

[0071] The controller 1 is used for outputting a signal indicating no fault to drive the first AND logic circuit 2.

[0072] In order to solve the shortcomings of the relay, in the present application, the transformer 3 is mainly used to replace the relay, and in order to further ensure that the safety-related signals can be safely and reliably transmitted, considering that when the device on the train fails, in order to ensure the stability of the train operation, the staff will check all the devices on the train, therefore, the AND logic circuit 2 is also set, based on the characteristics of the AND logic to transmit the fault signal, without the device generating a relatively complex fault signal, only a simple signal such as a level signal can effectively express whether there is a fault.

[0073] Specifically, as follows:

[0074] Based on the characteristics that the staff will check all the devices when detecting that there is a device on the train that has failed, the device only needs to output a signal indicating that there is a fault, without the device outputting a signal indicating what specific fault has occurred. For example, the device can continuously output a high level signal when it is normal, and output a low level signal when it fails, based on which, in the train system, the high level signal is defined as normal, and the low level signal is defined as fault.

[0075] In actual construction of the connection line, each is connected with the logic circuit 2 and each device on the train one by one, and each transformer 3 is connected with each logic circuit one by one, which is equivalent to each device corresponding to a logic circuit 2 and a transformer 3. The logic circuit 2 is used to judge whether there is a fault in the entire train system, and the transformer 3 is used as a signal transmitting end of the device. In order to simply describe, the logic circuit 2 and the transformer 3 corresponding to each device are combined into a judgment module. All judgment modules are sequentially sorted in a certain order. In each judgment module, the fault signal output by the device is used as an input end of the logic circuit 2, another input end of the logic circuit 2 is connected with the output end of the previous judgment module, the output end of the logic circuit 2 is connected with the primary side of the transformer 3, and the secondary side of the transformer 3 as the output end of the judgment module is connected with another input end of the next logic circuit 2. For the first judgment module in the sequence, another input end of the logic circuit 2 in the first judgment module is connected with the controller 1, and the controller 1 continuously outputs a signal indicating normality, such as a high-level signal, to the first logic circuit 2. Because the logic circuit 2 is for normal signal logic, as long as the first device outputs a signal indicating a fault, the first logic circuit 2 will output a signal indicating a fault. For the last judgment module in the sequence, the secondary side of the transformer 3 in the last judgment module is connected with the processor 4, so that the processor 4 finally judges whether there is a fault in the devices. According to the characteristics of the logic, if all the devices are normal devices, the devices will output a signal indicating normality, and the logic circuit 2 corresponding to each device will output a signal indicating normality. The next logic circuit 2 will also output a signal indicating normality when performing logic and judgment based on the previous output, because the previous logic circuit 2 outputs a signal indicating normality and the device itself also outputs a signal indicating normality. The next logic circuit 2 will also output a signal indicating normality. By analogy, the signal output to the processor 4 is necessarily a signal indicating normality, and when the processor 4 receives a signal indicating normality, it means that all the devices on the train are normal. Similarly, if a device fails, the logic circuit 2 corresponding to the device will output a signal indicating a fault, and all subsequent logic circuits 2 will output a signal indicating a fault, and the processor 4 will also receive a signal indicating a fault.

[0076] Compared with the relay, the transformer 3 is adopted as the signal transmitting end of the device, which greatly enhances the anti-interference ability of the signal, improves the reliability and safety in the transmission process, and reduces the signal transmission voltage requirement. For example, 24V or other low voltage can be used for transmission, which is obviously lower than 110V of the relay. Finally, the volume of the transformer 3 is usually smaller than that of the relay, which is beneficial to daily maintenance and replacement.

[0077] In addition, the transformation ratio of each first transformer 3 can be set according to actual working requirements. For example, a certain transformation ratio can be selected within 20:1~20:1.5. For the last transformer 3, in order to enable the processor 4 to obtain a clearer signal, the transformation ratio can be set to be larger, and can be selected within 5:6~5:6.5.

[0078] In summary, by setting the controller 1, the plurality of first transformers 3, the plurality of logical circuits 2 and the processor 4, each transformer 3 is connected with the corresponding logical circuit 2 and the device on the train, and these combinations of logical circuits 2+transformers 3 are sorted in a certain order, the first logical circuit 2 is connected with the controller 1, and the last transformer 3 is connected with the processor 4, the controller 1, the logical circuit 2, the transformer 3 and the processor 4 are connected in series, and the logical circuit 2 outputs a signal indicating no fault when the signals at the two input ends are both signals indicating no fault, otherwise outputs a signal indicating that there is a fault. The controller 1 is used to output a signal indicating no fault to drive the first logical circuit 2. All devices on the train are connected in series, and the processor 4 is connected with only one device. This is because when a device on the train fails, the staff will check all the devices, so finally only the train system and the staff need to know that there is a device with a fault, and do not need to know in detail which device sends which fault. The processor 4 is connected with only one device, which not only ensures the accurate discovery of the fault of the device on the train, but also reduces the calculation amount and signal processing amount of the train processor 4. In addition, compared with the relay, the transformer 3 has the advantages of small size, low energy consumption and strong anti-interference ability as the signal transmitting end of the device.

[0079] On the basis of the above embodiment:

[0080] As a preferred embodiment, the logical circuit 2 is a triode.

[0081] The first end of the primary side of the first transformer 3 corresponding to the triode is connected with the output positive terminal of the device corresponding to the triode.

[0082] The base of the first triode is connected with the output of the controller 1, the collector is connected with the second end of the primary side of the first transformer 3 corresponding to the first triode, and the emitter is connected with the output negative terminal of the device corresponding to the first triode.

[0083] The base of the other N-1 triodes is connected with the first end of the secondary side of the first transformer 3 corresponding to the last triode, the collector is connected with the second end of the primary side of the first transformer 3 corresponding to the triode itself, and the emitter is connected with the output negative terminal of the device corresponding to the triode itself and the second end of the secondary side of the first transformer 3 corresponding to the last triode.

[0084] In order to simply realize the function of logical AND, in the present application, the function of the AND logic circuit 2 is realized by the triode. Please refer to Figure 2 , Figure 2 The structure schematic diagram of another fault detection device of the train equipment provided in the present application is shown in the figure. The emitter of the triode is connected with the first input of the AND logic circuit 2 and the input of the device, the collector of the triode is connected with the output of the AND logic circuit 2 and the primary side of the transformer 3, and is connected with the base of the next triode through the transformer 3, the base of the triode is the second input of the AND logic circuit 2, the base of the first triode is connected with the controller 1, and the base of the other triodes is connected with the secondary side of the last transformer 3. In the realization of the fault detection, the first triode is driven by the periodic signal sent by the controller 1. When the device is in the normal state, the device can generate the signal (such as the high level signal) for driving the triode, the signal passes through the triode corresponding to the device itself and the transformer 3 to the base of the next triode, and the next triode is controlled to be turned on through the secondary side of the transformer 3, and the primary side of the transformer 3 itself is controlled by the triode to convert the signal (such as the 24V level signal) sent by the device into an alternating current signal; when the device is in the fault state, the signal is not sent, so that the next triode is not turned on, resulting in that all the other triodes are not turned on; when the processor 4 fails to receive the signal indicating normal state sent by the last device, it may be because the last device is in fault, or it may be because the triode corresponding to the last device is not turned on due to the fault of the other devices, and both the two cases are determined as fault. Based on this, the function of logical AND can be simply realized by using the triode.

[0085] In addition, the type or type of the triode actually used is not limited in the present application, as long as the triode can withstand the impact of the reverse voltage caused by the primary side circuit of the transformer 3 being turned off.

[0086] As a preferred embodiment, it further comprises:

[0087] N first diodes D1, N second diodes D2, N first resistors R1 and N second resistors R2 corresponding to the N AND logic circuits 2 respectively;

[0088] The negative poles of the first diodes D1 are connected to the positive output terminals of the devices corresponding to the AND logic circuits 2 and the first ends of the primary sides of the first transformers 3 respectively, and the positive poles of the first diodes D1 are connected to the positive poles of the second diodes D2 and the first ends of the first resistors R1 respectively;

[0089] The negative poles of the second diodes D2 are connected to the second ends of the first resistors R1, the second ends of the primary sides of the first transformers 4 and the negative output terminals of the devices respectively;

[0090] The second resistors R2 are connected in series with the bases of the triodes.

[0091] In order to stabilize the signal output, in the present application, considering that the signal output by the device can be disturbed by the outside world, therefore, please refer to Figure 2 , Figure 2 Another structure schematic diagram of the fault detection device of the train device provided in the present application is shown in the figure, a set of voltage stabilizing module is arranged on the primary side of the transformer 3, mainly by two diodes connected in reverse series on both sides of the primary side of the transformer 3, and a resistor is further connected between the two diodes, the other end of the resistor is connected to one end of the secondary side of the transformer 3 connected to the negative output terminal of the device, and a second resistor R2 is further arranged in front of the base to stabilize the base voltage of the triode. Through the module, when the device suddenly stops outputting due to some reason, a loop is provided for the primary side magnetic field of the transformer 3, and a signal with the same frequency as the signal at the base of the triode is output on the secondary side of the transformer 3, so as to stabilize the signal output of the device.

[0092] In addition, the diode can be a general diode or a Zener diode, and the type of the diode is not limited in the present application. The model or type of the diode used in practice is also not limited in the present application, as long as the diode can withstand the impact of the reverse voltage caused by the shutdown of the primary side circuit of the transformer 3.

[0093] As a preferred embodiment, N input filter circuits are further included;

[0094] The N input filter circuits are arranged one by one between the N AND logic circuits 2 and the devices corresponding to the AND logic circuits 2;

[0095] The input filter circuit is used for filtering the signal output by the device.

[0096] In order to stabilize the signal output, in the present application, considering that the signal output by the device can be interfered by the outside world, a filter circuit is further arranged between the device and the logic circuit 2 as the output filter of the device, and the non-specific frequency components output by the device are removed through the filter to remove the noise part in the signal, so as to ensure the stability and accuracy of the signal output by the device.

[0097] As a preferred embodiment, the input filter circuit comprises:

[0098] a third resistor R3, a fourth resistor R4 and a first capacitor C1;

[0099] One end of the third resistor R3 is connected to the output positive terminal of the device;

[0100] One end of the fourth resistor R4 is connected to the output negative terminal of the device;

[0101] One end of the first capacitor C1 is connected to the other end of the third resistor R3 and the primary first end of the first transformer 3 respectively, and the other end of the first capacitor C1 is connected to the other end of the fourth resistor R4 and the first input terminal of the logic circuit 2 respectively.

[0102] In order to simply realize the function of the filter circuit, in the present application, the filter circuit mainly comprises two resistors and a capacitor, and the specific structure will be described below. Figure 2 , Figure 2 Another structure schematic diagram of the train equipment fault detection device provided in the present application is shown in the figure, a resistor is connected in series at the positive and negative terminals of the device output end respectively, and a capacitor is arranged between the two resistors, the signal amplitude output by the device is stabilized through the resistor, and the unstable signal components output by the device are absorbed through the capacitor, so as to ensure the stability of the signal input into the logic circuit 2. In addition, the filter circuit can also use inductance instead of resistor, which is not limited in the present application.

[0103] As a preferred embodiment, the output filter circuit further comprises:

[0104] The input terminal of the output filter circuit is connected to the secondary side of the first transformer 3 corresponding to the last logic circuit 2, and the output terminal of the output filter circuit is connected to the processor 4;

[0105] The output filter circuit is used for filtering the signal output by the last first transformer 3.

[0106] In order to further ensure the accurate determination of whether there is a device fault, in the present application, please refer to Figure 2 , Figure 2As shown in the structural schematic diagram of another train equipment fault detection device provided in the present application, an output filter circuit is further arranged between the processor 4 and the last transformer 3, so as to ensure the stability of the signal output by the last transformer 3 to the processor 4, and avoid the influence of short-term or sudden interference on the signal, so that the processor 4 does not suddenly receive the wrong signal and make a false judgment. Further, an output filter circuit can also be arranged behind each transformer 3. However, the transistor is relatively insensitive to the signal voltage and can be turned on only when the signal voltage is greater than the threshold voltage, so that certain interference can be accepted. Therefore, the present application does not limit whether an output filter circuit is arranged behind each transformer 3. Based on this, by arranging the output filter circuit, the processor 4 can receive the correct signal, and the accurate determination of whether there is equipment failure can be further ensured.

[0107] As a preferred embodiment, the output filter circuit comprises:

[0108] a second capacitor C2 and a third diode D3;

[0109] a positive electrode of the third diode D3 is connected with a first end of the secondary side of the last first transformer 3;

[0110] one end of the second capacitor C2 is connected with a cathode of the third diode D3 and an input positive terminal of the processor 4 respectively;

[0111] the other end of the second capacitor C2 is connected with a second end of the secondary side of the last first transformer 3 and an input negative terminal of the processor 4 respectively.

[0112] In order to simply realize the function of the output filter circuit, please refer to Figure 2 , Figure 2 As shown in the structural schematic diagram of another train equipment fault detection device provided in the present application, the filter circuit mainly comprises a resistor and a capacitor. The interference component in the signal is removed through the diode, and the unstable component output by the transformer 3 is absorbed through the capacitor. After the filtering of the second capacitor C2 and the third diode D3, the alternating current signal output by the last transformer 3 is converted into a direct current signal to the processor 4, so as to ensure the stability of the signal input to the processor 4.

[0113] As a preferred embodiment, the controller 1 is a crystal oscillator.

[0114] a first end of the crystal oscillator is connected with a second input terminal of the first logic circuit 2, and a second end of the crystal oscillator is grounded.

[0115] In order to stably control the first AND logic circuit 2, in the present application, considering that the AND logic circuit 2 needs a signal with high frequency stability, and the general signal controller 1, such as an LC oscillator, has poor stability and the frequency is easy to drift, that is, the signal frequency generated is easy to change, which leads to the AND logic circuit 2 being easy to make a mistake, therefore, please refer to Figure 2 , Figure 2 Another structural schematic diagram of the train equipment fault detection device provided by the present application is provided, the present application uses a crystal oscillator as the controller 1, and the crystal oscillator can provide stable and accurate single-frequency oscillation characteristics by working in a resonance state, can generate a highly stable signal, and thereby achieves the purpose of stably controlling the first AND logic circuit 2. In addition, the frequency of the crystal oscillator can be selected according to actual requirements, such as selecting a value within 100 kHz-500 kHz as the crystal oscillator frequency value, which is not limited by the present application.

[0116] As a preferred embodiment, it further includes:

[0117] the field effect transistor T, the fourth diode D4, the fifth diode D5, the fifth resistor R5, and the second transformer TR;

[0118] The negative electrode of the fourth diode D4 is respectively connected with the power supply and the first end of the primary side of the second transformer TR, and the positive electrode of the fourth diode D4 is respectively connected with the positive electrode of the fifth diode D5 and the first end of the fifth resistor R5;

[0119] The negative electrode of the fifth diode D5 is respectively connected with the second end of the fifth resistor R5, the second end of the primary side of the second transformer TR, and the drain of the field effect transistor T;

[0120] The gate of the field effect transistor T is connected with the output end of the controller 4, and the source of the field effect transistor T is grounded.

[0121] In order to further ensure the stable control of the first AND logic circuit 2, in the present application, please refer to Figure 2 , ​ Another structural schematic diagram of the train equipment fault detection device provided by the present application is provided, the present application uses a crystal oscillator as the controller 1, and the crystal oscillator can provide stable and accurate single-frequency oscillation characteristics by working in a resonance state, can generate a highly stable signal, and thereby achieves the purpose of stably controlling the first AND logic circuit 2. In addition, the frequency of the crystal oscillator can be selected according to actual requirements, such as selecting a value within 100 kHz-500 kHz as the crystal oscillator frequency value, which is not limited by the present application.

[0122] In addition, the diode can be a general diode or a Zener diode, and the type of the diode is not limited by the present application.

[0123] The application further provides a train, characterized in that the train comprises a train body and N devices, and further comprises the train device fault detection device as described above;

[0124] The N devices and the train device fault detection device are arranged in the train.

[0125] The N devices are connected with the train device fault detection device.

[0126] For the detailed introduction of the train provided by the application, please refer to the above-mentioned embodiments of the train device fault detection device, and the application will not be repeated here.

[0127] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0128] It should be further noted that in the specification, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or sequence between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the existence of other same elements in the process, method, article or device including the element.

Claims

1. A failure detection device for a train equipment, characterized by, The application relates to a train fault diagnosis system. The system comprises a controller, a processor, N first transformers and N AND logic circuits, wherein N is a positive integer. The first input end of each of the N AND logic circuits is connected to a corresponding device on a train. The output end of each of the N AND logic circuits is connected to the primary side of a corresponding first transformer. The N AND logic circuits are arranged in a preset order. The second input end of the first AND logic circuit is connected to the output end of the controller. The second input end of each of the other N-1 AND logic circuits is connected to the secondary side of a corresponding first transformer. The secondary side of the first transformer corresponding to the last AND logic circuit is connected to the processor. The processor is used for determining the fault state of the N devices according to the received signals. The AND logic circuit is used for outputting a signal indicating no fault when the signals at the two input ends are both signals indicating no fault, otherwise outputting a signal indicating a fault. The controller is used for outputting a signal indicating no fault to drive the first AND logic circuit. The AND logic circuit is a triode. The first end of the primary side of the first transformer corresponding to the triode is connected to the positive output end of the device corresponding to the triode. The base of the first triode is connected to the output end of the controller, the collector is connected to the second end of the primary side of the first transformer corresponding to the first triode, and the emitter is connected to the negative output end of the device corresponding to the first triode. The base of each of the other N-1 triodes is connected to the first end of the secondary side of the first transformer corresponding to the last triode, the collector of each of the other N-1 triodes is connected to the second end of the primary side of the first transformer corresponding to the triode, and the emitter of each of the other N-1 triodes is connected to the negative output end of the device corresponding to the triode and the second end of the secondary side of the first transformer corresponding to the last triode.

2. The failure detection apparatus of a train equipment according to claim 1, wherein The system further comprises N first diodes, N second diodes, N first resistors and N second resistors corresponding to the N AND logic circuits. The negative pole of each of the first diodes is connected to the positive output end of the device corresponding to the AND logic circuit and the first end of the primary side of the first transformer corresponding to the AND logic circuit, and the positive pole of each of the first diodes is connected to the positive pole of the second diode and the first end of the first resistor. The negative pole of each of the second diodes is connected to the second end of the first resistor, the second end of the primary side of the first transformer and the negative output end of the device. The second resistor is connected in series with the base of the triode. The system further comprises N input filter circuits.

3. The train equipment fault detection apparatus of claim 1, wherein The N input filter circuits are arranged between the N AND logic circuits and the devices corresponding to the N AND logic circuits. The input filter circuit is used for filtering the signal output by the device. The input filter circuit comprises a third resistor, a fourth resistor and a first capacitor.

4. The train equipment fault detection apparatus of claim 3, wherein, One end of the third resistor is connected to the positive output end of the device. One end of the fourth resistor is connected to the negative output end of the device. The first end of the primary side of the first transformer corresponding to the triode is connected to the positive output end of the device corresponding to the triode. The base of the first triode is connected to the output end of the controller, the collector is connected to the second end of the primary side of the first transformer corresponding to the first triode, and the emitter is connected to the negative output end of the device corresponding to the first triode. The base of each of the other N-1 triodes is connected to the first end of the secondary side of the first transformer corresponding to the last triode, the collector of each of the other N-1 triodes is connected to the second end of the primary side of the first transformer corresponding to the triode, and the emitter of each of the other N-1 triodes is connected to the negative output end of the device corresponding to the triode and the second end of the secondary side of the first transformer corresponding to the last triode. The system further comprises N first diodes, N second diodes, N first resistors and N second resistors corresponding to the N AND logic circuits. The negative pole of each of the first diodes is connected to the positive output end of the device corresponding to the AND logic circuit and the first end of the primary side of the first transformer corresponding to the AND logic circuit, and the positive pole of each of the first diodes is connected to the positive pole of the second diode and the first end of the first resistor. The negative pole of each of the second diodes is connected to the second end of the first resistor, the second end of the primary side of the first transformer and the negative output end of the device. The second resistor is connected in series with the base of the triode. The system further comprises N input filter circuits. The N input filter circuits are arranged between the N AND logic circuits and the devices corresponding to the N AND logic circuits. The input filter circuit is used for filtering the signal output by the device. The input filter circuit comprises a third resistor, a fourth resistor and a first capacitor. One end of the third resistor is connected to the positive output end of the device. One end of the fourth resistor is connected to the negative output end of the device. One end of the first capacitor is connected with the other end of the third resistor and the first end of the primary side of the first transformer respectively, and the other end of the first capacitor is connected with the other end of the fourth resistor and the first input end of the logic circuit respectively.

5. The train equipment fault detection apparatus of claim 1, wherein, The output filter circuit is further included; The input end of the output filter circuit is connected with the secondary side of the last first transformer corresponding to the logic circuit, and the output end of the output filter circuit is connected with the processor; The output filter circuit is used for filtering the signal output by the last first transformer.

6. The train equipment fault detection apparatus of claim 5, wherein, The output filter circuit includes: A second capacitor and a third diode; The positive electrode of the third diode is connected with the first end of the secondary side of the last first transformer; One end of the second capacitor is connected with the cathode of the third diode and the input positive end of the processor respectively; The other end of the second capacitor is connected with the second end of the secondary side of the last first transformer and the input negative end of the processor respectively.

7. The train equipment fault detection apparatus of claim 1, wherein, The controller is a crystal oscillator; The first end of the crystal oscillator is connected with the second input end of the first logic circuit, and the second end of the crystal oscillator is grounded.

8. The train equipment fault detection apparatus of any one of claims 1 to 7, wherein, Further included are: A field effect transistor, a fourth diode, a fifth diode, a fifth resistor and a second transformer; The negative electrode of the fourth diode is connected with the power supply and the first end of the primary side of the second transformer respectively, and the positive electrode of the fourth diode is connected with the positive electrode of the fifth diode and the first end of the fifth resistor respectively; The negative electrode of the fifth diode is connected with the second end of the fifth resistor, the second end of the primary side of the second transformer and the drain of the field effect transistor respectively; The gate of the field effect transistor is connected with the output end of the controller, and the source of the field effect transistor is grounded.

9. A train characterised by The train equipment fault detection device includes a train body and N devices, and further includes the train equipment fault detection device according to any one of claims 1 to 8; The N devices and the train equipment fault detection device are arranged in the train; The N devices are connected with the train equipment fault detection device.

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