Adaptive axle counting device and adaptive axle counting system

Abstract

The present invention discloses an adaptive axle counting device and an adaptive axle counting system, which include: an outdoor device, which includes two wheel sensors and two cable terminal boxes, each wheel sensor is connected to a corresponding cable terminal box, one wheel sensor is arranged at one end of a track section, and the other wheel sensor is arranged at the other end of the track section; an indoor device, which includes two amplifier boards, an axle counting board and an input-output board, each amplifier board is connected to a cable terminal box, each amplifier board is connected to the axle counting board through a main CAN bus, and the axle counting board is connected to the input-output board. The amplifier board and the axle counting board of the present invention are connected through the main CAN bus communication, so there is no need for too many signal lines, thereby reducing production and maintenance costs, and improving production and maintenance rates.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to an adaptive axle counting device and an adaptive axle counting system. Background Art

[0002] With the process of urbanization, cities are getting bigger and bigger, and traffic problems in cities are becoming more and more prominent. More and more people choose public transportation to travel. Trams are becoming an important tool to solve urban public transportation problems because they are cheaper to build than subways, have a shorter construction period, and have a large carrying capacity.

[0003] The operating environment of trams is different from that of subways and railways. Trains on subways and railways have exclusive right of way, and other social vehicles cannot enter the rail area where they operate; while some driving areas of trams need to be shared with social vehicles (such as cars). Track circuits or axle counting sensors are set in these areas so that the track circuits or axle counting systems can give trams effective driving signals. However, the communication between ports of existing axle counting system boards all uses signal lines. Therefore, there are many signal lines, which leads to problems such as slow production and maintenance speed and high cost. Summary of the invention

[0004] The object of the present invention is to provide an adaptive axle counting device and an adaptive axle counting system to solve the technical problems that there are many signal lines for communication between boards in the existing axle counting system, resulting in slow production and maintenance speed and high cost.

[0005] In order to solve the above problems, the present invention provides an adaptive axle counting device, which includes:

[0006] The outdoor equipment includes two wheel sensors and two cable terminal boxes, each wheel sensor is connected to a corresponding cable terminal box, one wheel sensor is arranged at one end of the track section, and the other wheel sensor is arranged at the other end of the track section, and each wheel sensor obtains a set of wheel axle information;

[0007] The indoor equipment includes two amplifier boards, an axle counting board and an input-output board. Each amplifier board is connected to a cable terminal box. Each amplifier board is connected to the axle counting board through a main CAN bus. The axle counting board is connected to the input-output board. The axle counting board receives two sets of wheel axle information and compares the two sets of wheel axle information. If they match, the input-output board is controlled to output an idle instruction. If they do not match, the input-output board is controlled to output an occupied instruction.

[0008] As a further improvement of the present invention, the indoor equipment further comprises:

[0009] The monitoring board has one end connected to the axle counter board via the auxiliary CAN bus and the other end connected to the external monitoring device. The monitoring board receives the status information and / or fault information collected by the axle counter board, outputs, displays and stores the status information and / or fault information, and controls the adaptive axle counter device to enter a non-working state when receiving fault information.

[0010] As a further improvement of the present invention, the indoor equipment further comprises:

[0011] The power board has one end connected to the mains and the other end connected to the monitoring board.

[0012] As a further improvement of the present invention, each wheel sensor includes two sensing units, and the amplifier board includes:

[0013] Two amplifying circuits, each of which is connected to a corresponding sensing unit;

[0014] Two first microcontrollers, each of which has one end connected to the two amplifying circuits respectively, and the other end connected to the axle counter board through the main CAN bus.

[0015] As a further improvement of the present invention, the axle counter plate comprises:

[0016] Two second microcontrollers, each second microcontroller is connected to the monitoring board via an auxiliary CAN bus, and each second microcontroller is connected to the amplification board via a main CAN bus;

[0017] Two axis information displays, each axis information display is connected to a corresponding second microcontroller;

[0018] A first buffer, one end of which is connected to the acquisition input end of the input-output board, and the other end of which is respectively connected to the two second microcontrollers;

[0019] One end of the selector is connected to the acquisition output end of the input and output board, and the other end is connected to the two second microcontrollers respectively.

[0020] As a further improvement of the present invention, the monitoring board comprises:

[0021] A third microcontroller, one end of which is connected to the axle counter board via the auxiliary CAN bus, and the other end of which is connected to an external monitoring device via an RS232, RS422 or RJ45 interface;

[0022] a memory device connected to the third microcontroller;

[0023] A first state display device connected to the third microcontroller;

[0024] The fault relay driving circuit is connected to the third microcontroller.

[0025] As a further improvement of the present invention, the input-output board comprises:

[0026] A collection input circuit connected to an external relay contact;

[0027] A second buffer, one end of which is connected to the acquisition input circuit, and the other end is connected to the axle counter board;

[0028] The output drive circuit has one end connected to the axle counter board and the other end connected to the external execution relay.

[0029] As a further improvement of the present invention: the acquisition input circuit is used to, when receiving the first electrical signal enabling acquisition, turn on the external relay contact, and acquire the acquisition signal of the second electrical signal, to obtain the negative logic return acquisition information, and the electrical properties of the first electrical signal and the second electrical signal are opposite;

[0030] The collection input circuit is used to, when receiving the second electrical signal for disabling collection, turn on the external relay contact, collect the collection signal of the second electrical signal, and obtain the collection information of positive logic;

[0031] The axle counter board is used to perform AND operations based on positive logic and inverted negative logic, and to determine whether signal acquisition is normal based on the results of the AND operations.

[0032] As a further improvement of the present invention: the output drive circuit is used to drive the external execution relay when receiving a pulse signal of a preset fixed frequency, and will not drive the external execution relay when receiving other electrical signals.

[0033] In order to solve the above problems, the present invention provides an adaptive axle counting system, which includes at least two adaptive axle counting devices described above, each of which further includes:

[0034] A communication board is connected to the axle counter board of the adaptive axle counter device, the communication board receives the wheel axle information and state information of the axle counter board, and encodes the wheel axle information and state information to obtain encoded information;

[0035] The inter-station transmission device is connected to the inter-station transmission device of the adjacent adaptive axle counting device, and the inter-station transmission device is used to transmit the encoded information to the inter-station transmission device of the adjacent adaptive axle counting device.

[0036] As a further improvement of the present invention, the communication board comprises:

[0037] two fourth microcontrollers, each of which has one end connected to the axle counter board via a main CAN bus and the other end connected to the inter-station transmission device via a serial interface;

[0038] Two second status displays, each second status display is correspondingly connected to a fourth microcontroller.

[0039] Compared with the prior art, the amplifier board and the axle counter board of the present invention are connected through the main CAN bus communication, so there is no need for too many signal lines, thereby reducing production and maintenance costs and improving production and maintenance rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A block diagram of the hardware composition of an embodiment of the adaptive axle counting device of the present invention;

[0041] Figure 2 A block diagram of the hardware composition of an embodiment of an amplifying board in an adaptive axle counting device of the present invention;

[0042] Figure 3 A block diagram of the hardware composition of an embodiment of an axle counter board in the adaptive axle counter device of the present invention;

[0043] Figure 4 A block diagram of the hardware composition of an embodiment of a monitoring board in an adaptive axle counting device of the present invention;

[0044] Figure 5 A block diagram of the hardware composition of an embodiment of an input and output board in an adaptive axle counting device of the present invention;

[0045] Figure 6 A circuit diagram of an embodiment of an input and output board in an adaptive axle counting device of the present invention;

[0046] Figure 7 A block diagram of the hardware composition of an embodiment of the adaptive axle counting system of the present invention;

[0047] Figure 8 The figure is a block diagram of the hardware composition of an embodiment of a communication board in the adaptive axle counting system of the present invention. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Similar component numbers in the drawings represent similar components. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Figure 1 An embodiment of the adaptive axle counting device of the present invention is shown. In this embodiment, Figure 1 As shown, the adaptive axle counting device includes an outdoor device 1 and an indoor device 2 .

[0050] Among them, the outdoor equipment 1 includes two wheel sensors 10 and two cable terminal boxes 11, each wheel sensor 10 is connected to a corresponding cable terminal box 11, one wheel sensor 10 is arranged at one end of the track section, and the other wheel sensor 10 is arranged at the other end of the track section, and each wheel sensor 10 obtains a set of wheel axle information, wherein each wheel sensor 10 includes two sensing units 100.

[0051] The indoor equipment 2 includes two amplifier boards 20, an axle counting board 21, an input-output board 22, a monitoring board 23 and a power board 24. Each amplifier board 20 is connected to a corresponding cable terminal box 11 through an axle counting cable. Each amplifier board 20 is connected to the axle counting board 21 through the main CAN bus, and the axle counting board 21 is connected to the input-output board 22. The axle counting board 21 receives two sets of wheel axle information and compares the two sets of wheel axle information. If they match, the input-output board 22 is controlled to output an idle instruction. If they do not match, the input-output board 22 is controlled to output an occupied instruction.

[0052] Furthermore, one end of the monitoring board 23 is connected to the axle counter board 21 through the auxiliary CAN bus, and the other end is connected to the external monitoring device; the monitoring board 23 receives the status information and / or fault information collected by the axle counter board 21, outputs and displays and stores the status information and / or fault information, and controls the adaptive axle counter device to enter a non-working state when receiving the fault information. Controlling to enter a non-working state means entering a device configuration state, at which time the device cannot work. The monitoring board has a configuration function, that is, configuring the association between sensors and sections.

[0053] Furthermore, one end of the power board 24 is connected to the mains, and the other end is connected to the monitoring board 23 .

[0054] The amplifier board 20 and the axle counter board 21 in this embodiment are connected via a main CAN bus communication. At the same time, the monitoring board 23 and the axle counter board 21 are connected via an auxiliary CAN bus communication. Therefore, there is no need for too many signal lines, thereby reducing production and maintenance costs and improving production and maintenance rates.

[0055] See also Figure 1When the adaptive axle counting device described in the above embodiment is applied to give a valid driving signal, first, one wheel sensor 10 obtains the first axle information and transmits it to the axle counting board 21 through the corresponding amplifier board 20, and the other wheel sensor 10 obtains the second axle information and transmits it to the axle counting board 21 through the corresponding amplifier. Secondly, the axle counting board 21 compares the first axle information with the second axle information. If the first axle information matches the second axle information, an idle prompt is generated. If the first axle information does not match the second axle information, an occupied prompt is generated. Finally, the axle counting board 21 sends the idle prompt or occupied prompt to the input and output board 22, and outputs it through the acquisition output end of the input and output board 22, so that the monitor can know whether there is a car in the track section. Specifically, if the acquisition output end of the input and output board 22 outputs an occupied prompt, it means that there is a car in the track section. If the acquisition output end of the input and output board 22 outputs an idle prompt, it means that there is no car in the track section.

[0056] Based on the above embodiments, in other embodiments, see Figure 2 The amplifier board 20 includes two amplifier circuits 200 and two first microcontrollers 201. Each amplifier circuit 200 is connected to a corresponding sensing unit 100; one end of each first microcontroller 201 is connected to the two amplifier circuits 200, and the other end is connected to the axle counter board 21 through the main CAN bus.

[0057] The amplifier board 20 in this embodiment can perform fault detection on the wheel sensor 10, the information transmission channel between the wheel sensor 10 and the amplifier board 20, and the amplifier board 20 itself, and transmit the information obtained by the fault detection to the axle counter board 21 in the form of data for analysis and processing by the axle counter board 21. In addition, the amplifier board 20 in this embodiment can transmit the axle information, the status information of the wheel sensor 10, and the status information of the amplifier board 20 itself to the axle counter board 21 in the form of data, so that the axle counter board 21 can obtain the status information in real time.

[0058] Based on the above embodiments, in other embodiments, see Figure 3 The axle counter board 21 includes two second microcontrollers 210 , two axle information displays 211 , a first buffer 212 and a selector 213 .

[0059] Among them, each second microcontroller 210 is connected to the monitoring board 23 through the auxiliary CAN bus, and each second microcontroller 210 is connected to the amplifier board 20 through the main CAN bus; each axis information display 211 is connected to a corresponding second microcontroller 210; one end of the first buffer 212 is connected to the acquisition input end of the input and output board 22, and the other end is respectively connected to the two second microcontrollers 210; one end of the selector 213 is connected to the acquisition output end of the input and output board 22, and the other end is respectively connected to the two second microcontrollers 210.

[0060] In this embodiment, when the second microcontroller 210 of the axle counter board 21 receives the negative zero control instruction input from the acquisition input terminal of the input and output board 22, the track section is converted from the occupied state to the idle state. In addition, the state information received by the axle counter board 21 is transmitted to the monitoring board 23 via the auxiliary CAN bus for status signal and monitoring.

[0061] Based on the above embodiments, in other embodiments, see Figure 4 The monitoring board 23 includes a third microcontroller 230 , a storage device 231 , a first state display device 232 and a fault relay driving circuit 233 .

[0062] Among them, one end of the third microcontroller 230 is connected to the axle counter board 21 through the auxiliary CAN bus, and the other end is connected to the external monitoring device through the RS232, RS422 or RJ45 interface; the storage device 231 is connected to the third microcontroller 230; the first state display device 232 is connected to the third microcontroller 230; and the fault relay drive circuit 233 is connected to the third microcontroller 230.

[0063] In this embodiment, the third microcontroller 230 obtains the axle counter board 21 and the state or fault information collected by the axle counter board 21 through the auxiliary CAN bus, and stores the state or fault information through the storage device 231, so that the maintenance personnel can quickly identify the faulty device according to the state or fault information. Furthermore, the fault alarm relay GZJ is provided with an excitation path through the front contact series link of the fault relays GZJ1 and GZJ2. When the adaptive axle counter device is fault-free, GZJ is sucked up; when the adaptive axle counter device is faulty, GZJ falls down.

[0064] Based on the above embodiments, in other embodiments, see Figure 5 The input-output board 22 includes at least one input circuit 220 , two second buffers 221 and two output driving circuits 222 .

[0065] Among them, the collection input circuit 220 is connected to the contacts of the external relay (the external relay includes the track relay); one end of the second buffer 221 is connected to the collection input circuit 220, and the other end is connected to the axle counting board 21; one end of the output drive circuit 222 is connected to the axle counting board 21, and the other end is connected to the drive relays QGJ1 and QFJ2 respectively, which are used to drive the two relays to work respectively. The drive relays QGJ1 and QFJ2 each have a contact for connecting the KZ and KF terminals of the track relay QGJ to prevent the KZ and KF terminals of the track relay QGJ from being externally mixed, and output abnormal idle prompt information.

[0066] 1. Principle of safety acquisition input circuit

[0067] See also Figure 6 When the second microcontroller 210 inputs a low level, and the relay contacts are turned on, and a high level signal is input, the collected information of the input circuit 220 is a low level, which is negative logic; when the second microcontroller 210 inputs a high level, and the relay contacts are turned on, and a high level signal is input, the collected information of the input circuit 220 is a high level, which is positive logic. The axle counter board 21 performs an AND operation on the collected positive logic signal and the inverted negative logic signal. When the result is 1 (true), it is judged that the external relay has a signal input. When the result is 0 (false), it is judged that the external relay has no signal input, or the collection input circuit fails.

[0068] This embodiment uses a double electrical signal to confirm whether the acquisition input circuit is normal, avoiding the phenomenon of misjudgment caused by short circuit or other reasons when confirming with a single electrical signal, thereby improving the safety performance of signal acquisition.

[0069] 2. Principle of safety output circuit

[0070] See also Figure 6 , the second microcontroller 210 outputs a fixed frequency pulse signal to drive the negative voltage circuit to generate a 12V negative voltage to drive the execution relay of the output drive circuit 222. When the CPU software is abnormal or the output circuit fails, the frequency of the output pulse signal changes, and when the CPU fails or the output circuit fails, the output signal is fixed to a high level state or a low level state, and the execution relay of the output drive circuit 222 cannot be driven, so as to ensure the safety of the execution relay action.

[0071] Figure 7 An embodiment of the adaptive axle counting system of the present invention is shown. In this embodiment, Figure 7 As shown, the adaptive axle counting system includes at least two adaptive axle counting devices described in the above embodiments.

[0072] In order to illustrate the technical solution of the present invention in more detail, two adaptive axle counting devices are taken as an example to illustrate this case.

[0073] See also Figure 7 The adaptive axle counting system includes two adaptive axle counting devices, one adaptive axle counting device is used to be set at station A, and the other adaptive axle counting device is set at station B. Each adaptive axle counting device includes:

[0074] The wheel sensor 10 obtains a set of wheel axle information.

[0075] The cable terminal box 11 , to which the wheel sensor 10 is connected correspondingly.

[0076] One end of the amplifier board 20 is connected to a corresponding cable terminal box 11 through an axle counting cable, and the other end is connected to the axle counting board 21 through a main CAN bus.

[0077] The axle counter board 21 has one end connected to the communication board 30 via the main CAN bus, and the other end connected to the monitoring board 23 via the auxiliary CAN bus.

[0078] The input-output plate 22 is connected to the axle counter plate 21 .

[0079] The monitoring board 23 has one end connected to the axle counting board 21 via the auxiliary CAN bus, and the other end connected to an external monitoring device.

[0080] The power board 24 has one end connected to the mains, and the other end connected to the monitoring board 23 .

[0081] The communication board 30 is connected to the communication board 30 of its own adaptive axle counting device.

[0082] The inter-station transmission device 31 is connected to the inter-station transmission device 31 of the adjacent adaptive axle counting device.

[0083] It should be noted that the inter-station transmission device 31 in this embodiment may be an optical modem.

[0084] See also Figure 1When the adaptive axle counting system described in the above embodiment is used to give an effective driving signal between Station A and Station B, first, a wheel sensor 10 at Station A obtains the first wheel axle information and transmits it to the axle counting board 21 via the corresponding amplifier board 20, and a wheel sensor 10 at Station B obtains the second wheel axle information and transmits it to the axle counting board 21 via the corresponding amplifier 20, and the axle counting board 21 transmits the second wheel axle information to the communication board 30 for encoding, and then transmits it to the inter-station transmission device 31 of Station A via the inter-station transmission device 31, and then decodes the encoded information at the communication board 30 of Station A and transmits it to the axle counting board 21 of Station A; secondly, the axle counting board 21 at Station A compares the information of the first wheel axle and the second wheel axle. Comparing the first axle information with the second axle information, if the first axle information matches the second axle information, an idle prompt is generated; if the first axle information does not match the second axle information, an occupied prompt is generated; finally, the axle counting board 21 of Station A sends the idle prompt or occupied prompt to the input-output board 22, and outputs it through the acquisition output end of the input-output board 22, so that the monitor can know whether there is a car in the section between Station A and Station B. Specifically, if the acquisition output end of the input-output board 22 outputs an occupied prompt, it means that there is a car in the section between Station A and Station B; if the acquisition output end of the input-output board 22 outputs an idle prompt, it means that there is no car in the section between Station A and Station B.

[0085] Based on the above embodiments, in other embodiments, see Figure 8 , the communication board 30 comprises:

[0086] Two fourth microcontrollers 300, each of which has one end connected to the axle counter board 21 via the main CAN bus and the other end connected to the inter-station transmission device 31 via a serial interface;

[0087] Two second status displays 301 , each second status display 301 is correspondingly connected to a fourth microcontroller 300 .

[0088] In this embodiment, the fourth microcontroller 300 receives the axle information and status information of the axle counter board 301, encodes the axle information and status information to obtain encoded information, and transmits the encoded information to the inter-station transmission device 31 of the adjacent adaptive axle counter device.

[0089] This embodiment encodes the axle information and status information before transmission, which reduces the amount of data transmission and thus improves the data transmission rate.

[0090] The specific implementation methods of the invention are described in detail above, but they are only examples, and the present invention is not limited to the specific implementation methods described above. For those skilled in the art, any equivalent modification or substitution of the invention is also within the scope of the present invention. Therefore, the equalization, modification, improvement, etc. made without departing from the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An adaptive axle counting device, characterized in that: It includes: The outdoor equipment includes two wheel sensors and two cable terminal boxes, each wheel sensor is connected to a corresponding cable terminal box, one wheel sensor is arranged at one end of the track section, and the other wheel sensor is arranged at the other end of the track section, and each wheel sensor obtains a set of wheel axle information; Indoor equipment, comprising two amplifier boards, an axle counter board and an input-output board, each amplifier board correspondingly connected to a cable terminal box, each amplifier board respectively connected to the axle counter board through a main CAN bus, the axle counter board connected to the input-output board, the axle counter board receives two sets of wheel axle information and compares the two sets of wheel axle information, if they match, the input-output board is controlled to output an idle instruction, if they do not match, the input-output board is controlled to output an occupied instruction; Each wheel sensor includes two sensing units, and the amplifier board includes: Two amplifying circuits, each of which is connected to a corresponding sensing unit; Two first microcontrollers, each of which has one end connected to the two amplifying circuits respectively, and the other end connected to the axle counter board via the main CAN bus; The axle counter plate comprises: Two second microcontrollers, each second microcontroller is connected to the monitoring board via an auxiliary CAN bus, and each second microcontroller is connected to the amplification board via the main CAN bus; Two axis information displays, each axis information display is connected to a corresponding second microcontroller; A first buffer, one end of which is connected to the acquisition input end of the input-output board, and the other end of which is connected to the two second microcontrollers respectively; A selector has one end connected to the acquisition output end of the input-output board, and the other end connected to the two second microcontrollers respectively.

2. The adaptive axle counting device according to claim 1, characterized in that: The indoor equipment also includes: A monitoring board, one end of which is connected to the axle counter board via an auxiliary CAN bus, and the other end of which is connected to an external monitoring device. The monitoring board receives status information and / or fault information collected by the axle counter board, outputs, displays and stores the status information and / or the fault information, and controls the adaptive axle counter device to enter a non-working state when receiving the fault information.

3. The adaptive axle counting device according to claim 2, characterized in that: The monitoring board comprises: A third microcontroller, one end of which is connected to the axle counter board via the auxiliary CAN bus, and the other end of which is connected to the external monitoring device via an RS232, RS422 or RJ45 interface; a memory device connected to the third microcontroller; A first state display device connected to the third microcontroller; A fault relay driving circuit is connected to the third microcontroller.

4. The adaptive axle counting device according to claim 1, characterized in that: The input-output board comprises: A collection input circuit connected to an external relay contact; A second buffer, one end of which is connected to the acquisition input circuit, and the other end of which is connected to the axle counting board; An output drive circuit has one end connected to the axle counter plate and the other end connected to an external execution relay.

5. The adaptive axle counting device according to claim 4, characterized in that: The acquisition input circuit is used for, when receiving the first electrical signal for enabling acquisition, the external relay contact is turned on, and the acquisition signal of the second electrical signal is acquired to obtain negative logic return acquisition information, and the electrical properties of the first electrical signal and the second electrical signal are opposite; The acquisition input circuit is used to, when receiving the acquisition disabled second electrical signal, turn on the external relay contact, and acquire the acquisition signal of the second electrical signal to obtain the positive logic acquisition information; The axle counter board is used to perform an AND operation according to the positive logic and the inverted negative logic, and to determine whether the signal acquisition is normal according to the result of the AND operation.

6. The adaptive axle counting device according to claim 4, characterized in that: The output drive circuit is used to drive the external execution relay when receiving a pulse signal of a preset fixed frequency, and will not drive the external execution relay when receiving other electrical signals.

7. An adaptive axle counting system, characterized in that: It comprises at least two adaptive axle counting devices according to any one of claims 1 to 6, each adaptive axle counting device further comprising: A communication board connected to the axle counter board of the adaptive axle counter device, the communication board receives the wheel axle information and status information of the axle counter board, and encodes the wheel axle information and the status information to obtain encoded information; The inter-station transmission device is connected to the inter-station transmission device of an adjacent adaptive axle counter device, and the inter-station transmission device is used to transmit the encoded information to the inter-station transmission device of the adjacent adaptive axle counter device.

8. The adaptive axle counting system according to claim 7, characterized in that: The communication board comprises: Two fourth micro Each fourth microcontroller has one end connected to the axle counter via the main CAN bus The other end is connected to the inter-station transmission device via a serial interface; Two second status displays, each second status display is correspondingly connected to a fourth microcontroller.

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