Dynamic rail weighbridge data acquisition instrument and dynamic rail weighbridge system

Abstract

The utility model discloses a dynamic rail weighbridge data acquisition instrument and a dynamic rail weighbridge system, and relates to the dynamic rail weighbridge technology field, the dynamic rail weighbridge data acquisition instrument comprises two analog-to-digital conversion modules, and each analog-to-digital conversion module is correspondingly connected with a group of weighing sensors; the analog-to-digital conversion module is used for converting a weight millivolt signal acquired by the weighing sensor into a weight digital signal and outputting the weight digital signal; the controller is respectively connected with the two analog-to-digital conversion modules and is used for alternately receiving the two paths of weight digital signals and processing the received weight digital signals to obtain collected data; and the communication module is respectively connected with the controller and external equipment and is used for realizing information interaction between the controller and the external equipment. According to the invention, the data transmission rate of the dynamic rail weighbridge data acquisition instrument can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of dynamic track scales, and in particular to a dynamic track scale data collector and a dynamic track scale system. Background Art

[0002] In the related art, dynamic track scale data collectors are typically four-channel, meaning four load cells are connected separately. These four-channel collectors can display the value of each load cell individually, allowing host computers and other equipment to accurately determine the vehicle's direction of travel. However, the data collected by these four-channel collectors is large in volume, hindering high-speed data transmission. Utility Model Content

[0003] The main purpose of this application is to provide a dynamic track scale data collector and a dynamic track scale system, aiming to solve the technical problem in the related technology that the dynamic track scale data collector has a large amount of data transmission, which affects the data transmission rate.

[0004] To achieve the above objectives, the present application proposes a dynamic track scale data collector, which includes:

[0005] Two analog-to-digital conversion modules, each of which is connected to a group of weighing sensors, and the analog-to-digital conversion module is used to convert the weight millivolt signal collected by the weighing sensor into a weight digital signal and output the weight digital signal;

[0006] The controller is connected to the two analog-to-digital conversion modules respectively, and is used to alternately receive two weight digital signals and process the received weight digital signals to obtain collected data;

[0007] The communication module is connected to the controller and the external device respectively, and is used to realize information interaction between the controller and the external device.

[0008] In one embodiment, the communication module includes a serial communication unit, a network communication unit, and a DIP switch unit;

[0009] The dip switch unit is connected to the serial communication unit, the network communication unit and the controller respectively, and the external device is connected to the serial communication unit and the network communication unit respectively. The dip switch unit is used to switch the communication mode between the controller and the external device; wherein the communication mode includes serial communication mode and network communication mode.

[0010] In one embodiment, the serial communication unit includes an RS485 communication element, an RS232 communication element, a mode selection interface, and a serial wiring interface;

[0011] The RS485 communication element is connected to the mode selection interface and the serial wiring interface respectively, the RS232 communication element is connected to the mode selection interface and the serial wiring interface respectively, the mode selection interface is connected to the DIP switch unit, and the serial wiring interface is connected to the external device through a serial communication line.

[0012] In one embodiment, the network communication unit includes an Ethernet transceiver, a network transformer, an RJ45 interface, and a network cable crimping interface;

[0013] The Ethernet transceiver is connected to the DIP switch unit and the network transformer respectively. The network transformer is connected to the RJ45 interface and the network cable pressure connection interface respectively. The RJ45 interface and the network cable pressure connection interface are connected to external devices through corresponding network cables respectively.

[0014] In one embodiment, the dynamic track scale data collector also includes a waterproof shell, and the protection level of the waterproof shell is IP68.

[0015] In one embodiment, the waterproof housing includes a shell body, an upper cover and a cable connector arranged on the shell body; the cable connector is used to connect the analog-to-digital conversion module and the corresponding weighing sensor; a waterproof sealing piece is provided between the shell body and the upper cover and is crimped by screws.

[0016] In one embodiment, the housing body and the upper cover are both made of stainless steel, and the cable connector is a stainless steel waterproof gland.

[0017] In one embodiment, the analog-to-digital conversion module includes a delta-sigma 24-bit analog-to-digital conversion chip.

[0018] In addition, to achieve the above objectives, the present application also proposes a dynamic track scale system, which includes:

[0019] Such as the dynamic track scale data collector mentioned above;

[0020] Two sets of weighing sensors are respectively arranged at different positions of the rail weighing platform. Each weighing sensor is connected to a corresponding analog-to-digital conversion module to collect the millivolt signal of the weight of the rail vehicle;

[0021] The host computer is connected to the dynamic track scale data collector to analyze and process the collected data to obtain the track scale measurement results.

[0022] In one embodiment, the dynamic track scale system further includes a vehicle number recognition device connected to the host computer for recognizing the vehicle number information of the rail vehicle and outputting the vehicle number information to the host computer.

[0023] One or more technical solutions proposed in this application have at least the following technical effects:

[0024] The dynamic track scale data collector provided by the present application includes two analog-to-digital conversion modules, a controller, and a communication module; wherein each analog-to-digital conversion module is respectively connected to a group of weighing sensors, and the analog-to-digital conversion module can convert the weight millivolt signal collected by the weighing sensor into a weight digital signal and output the weight digital signal; the controller can alternately receive the two weight digital signals and process the received weight digital signals to obtain collected data, and the collected data can be sent to an external device through the communication module for information exchange. In the present application, the controller can reduce the parallel transmission amount of the weight data signal by alternately receiving the weight digital signals correspondingly output by the two analog-to-digital conversion modules, thereby effectively improving the data transmission rate of the dynamic track scale data collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 A structural diagram of the first embodiment of the dynamic track scale data collector provided in this application;

[0028] Figure 2 is a circuit schematic diagram of an exemplary analog-to-digital conversion module;

[0029] Figure 3 It is a detailed structural diagram of the serial communication unit;

[0030] Figure 4 is a circuit schematic diagram of an exemplary serial communication unit;

[0031] Figure 5 It is a detailed structural diagram of the network communication unit;

[0032] Figure 6 This is a schematic diagram of the waterproof housing structure of an example dynamic track scale data collector;

[0033] Figure 7 This is a structural diagram provided for Example 1 of the dynamic track scale system of this application.

[0034] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0036] In order to better understand the technical solution of this application, the following will be described in detail with reference to the accompanying drawings and specific implementation methods. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0037] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0039] The dynamic track scale data collector is an important device for dynamic track scale measurement. It can obtain the weight millivolt signal collected by the weighing sensor at high speed and convert it into collected data. The collected data can be sent to the host computer for further analysis and processing.

[0040] Currently, there are generally two types of dynamic track scale data collectors: single-channel and four-channel. Single-channel collectors connect all sensors in parallel, and the weight millivolt signals collected by all sensors are connected to the collector as a single signal. Single-channel collectors are less expensive, but the single signal collected makes it difficult to identify the vehicle's direction.

[0041] The emergence of a four-channel data collector can solve the problem of a single-channel data collector having difficulty identifying vehicle direction. A four-channel data collector connects four load cells to the data collector separately. This allows the four-channel data collector to display the value of each load cell separately, allowing the host computer and other equipment to accurately determine the vehicle's direction. However, the data collected by a four-channel data collector involves a large amount of data when transmitting, which affects the high-speed data transmission.

[0042] In order to solve the above technical problems, a dynamic track scale data collector of the present application is proposed, which includes two analog-to-digital conversion modules, a controller and a communication module; wherein each analog-to-digital conversion module is respectively connected to a group of weighing sensors, and the analog-to-digital conversion module can convert the weight millivolt signal collected by the weighing sensor into a weight digital signal and output the weight digital signal; the controller can alternately receive the two weight digital signals, and process the received weight digital signals to obtain collected data, and the collected data can be sent to an external device through the communication module for information exchange. In the present application, the controller can reduce the parallel transmission amount of the weight data signal by alternately receiving the weight digital signals corresponding to the outputs of the two analog-to-digital conversion modules, thereby effectively improving the data transmission rate of the dynamic track scale data collector.

[0043] The following will describe and introduce the present invention through multiple embodiments.

[0044] See also Figure 1 , Figure 1 This is a structural diagram of the first embodiment of the dynamic track scale data collector of this application.

[0045] In this embodiment, the dynamic track scale data collector may include:

[0046] Two analog-to-digital conversion modules, each of which is connected to a group of weighing sensors, and the analog-to-digital conversion module is used to convert the weight millivolt signal collected by the weighing sensor into a weight digital signal and output the weight digital signal;

[0047] The controller is connected to the two analog-to-digital conversion modules respectively, and is used to alternately receive two weight digital signals and process the received weight digital signals to obtain collected data;

[0048] The communication module is connected to the controller and the external device respectively, and is used to realize information interaction between the controller and the external device.

[0049] Specifically, the weight millivolt signal collected by a weighing sensor is typically in the form of an analog signal. Therefore, an analog-to-digital conversion module is required to convert this analog weight millivolt signal into a corresponding digital signal, i.e., a weight digital signal. This facilitates data processing and calculation by a controller and other external devices (such as a host computer). The analog-to-digital conversion module converts and calculates the input weight millivolt signal to a preset resolution (such as 12 bits, 16 bits, or 24 bits) and outputs a corresponding digital code (i.e., a weight digital signal).

[0050] The two analog-to-digital conversion modules of the dynamic track scale data acquisition instrument are each connected to a corresponding set of weighing sensors. Each set of weighing sensors can independently perform signal acquisition, thereby allowing the controller to obtain weight digital signals corresponding to the two weight millivolt signals. The two weight digital signals are helpful for analyzing the vehicle's driving direction, etc. For example, if two front and rear weighing sensors are configured on a track weighing platform, when a vehicle passes through the track weighing platform, the loads on the front and rear axles are usually different, and the corresponding weight digital signals generated will also be different. Therefore, the controller and other external devices can determine the vehicle's driving direction by analyzing the changes in the weight digital signals corresponding to the two weighing sensors. The controller is connected to the two analog-to-digital conversion modules respectively. The controller can alternately receive the two weight digital signals according to the built-in logic program, thereby reducing the amount of parallel transmission of signal data, thereby improving the data transmission efficiency of the dynamic track scale data acquisition instrument. In addition, the dynamic track scale data acquisition instrument using two analog-to-digital conversion modules reduces the number of analog-to-digital conversion modules compared to a four-channel acquisition instrument, and can also effectively reduce the production cost of the acquisition instrument.

[0051] In a feasible embodiment, the above-mentioned analog-to-digital conversion module may include a Δ-Σ type 24-bit analog-to-digital conversion chip; the Δ-Σ type 24-bit analog-to-digital conversion chip contains a chopper-stabilized gain programmable amplifier, and the differential input end of the chip can directly measure the weight millivolt signal from the weighing sensor and convert it into a corresponding weight digital signal; the specific model of the above-mentioned Δ-Σ type 24-bit analog-to-digital conversion chip can be CS5532, or other models that can achieve the same or similar functions, which is not limited in this embodiment.

[0052] Figure 2 The circuit schematic diagram of an analog-to-digital conversion module is as follows: Figure 2As shown, the analog-to-digital conversion module includes an analog-to-digital conversion chip U1 of model CS5532BS, resistors R1 to R3, capacitors C1 to C8, and a crystal oscillator Y1; Pin 1 of the analog-to-digital conversion chip U1 is connected to one end of the capacitor C1, one end of the capacitor C2, and one end of the resistor R1, and the other end of the resistor R1 is connected to the positive output end of a corresponding set of weighing sensors to receive the weight millivolt signal S1+ output by the positive electrode of the weighing sensor; Pin 2 of the analog-to-digital conversion chip U1 is connected to one end of the capacitor C3, one end of the capacitor C2, and one end of the resistor R1, and the other end of the resistor R1 is connected to the positive output end of the corresponding set of weighing sensors to receive the weight millivolt signal S1+ output by the positive electrode of the weighing sensor; The other end of the capacitor C2 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the negative output end of a corresponding set of weighing sensors to receive the weight millivolt signal S1- output by the negative electrode of the weighing sensor; the No. 5 pin of the analog-to-digital conversion chip U1 is connected to the 5V voltage, the No. 15 pin is connected to the 3.3V power supply, and the No. 15 pin is also grounded through the capacitor C4; the No. 18 pin VREF+ and the No. 17 pin VREF- of the analog-to-digital conversion chip U1 are respectively connected to the positive and negative feedback of the corresponding weighing sensor At both ends of the voltage, a 4.9152M crystal oscillator Y1 is connected across pins 9 and 10, one end of the crystal oscillator Y1 is also connected to one end of capacitor C7, and the other end of the crystal oscillator Y1 is connected to one end of capacitor C8; pins 3 and 4 of the analog-to-digital conversion chip U1 are connected through capacitor C6; the analog-to-digital conversion chip U1 communicates with the controller through the SPI serial interface of pins 11 to 13, and pin 14 of the analog-to-digital conversion chip U1 is connected to the controller through resistor R3, so that the controller can input a chip select signal to the analog-to-digital conversion chip U1 through pin 14 of the analog-to-digital conversion chip U1 to alternately select communication with the two analog-to-digital conversion modules to achieve alternating reception of two-way weight digital signals; the other end of capacitor C7, the other end of capacitor C8, the other end of capacitor C1, the other end of capacitor C3, pins 9, 20, 6 and 16 of the analog-to-digital conversion chip U1 are all grounded; in the above circuit structure, resistors R1 to R3 mainly play a current limiting role, and capacitors C1 to C8 play a filtering role.

[0053] The controller can also process the received digital weight signal to obtain the final collected data. For example, the controller can correct and calibrate the digital weight signal based on built-in correction parameters to obtain the collected data. The controller generally uses an STM32 chip, which can alternately receive the digital weight signals output by two analog-to-digital conversion modules at high speed and time. The controller can also establish a communication connection with an external device (such as a host computer) through the communication module, sending the processed collected data to the external device for further analysis and processing. It can also receive and process parameter setting commands sent by the external device. Or, in some higher-configuration controllers, it can directly perform analysis and processing operations on the collected data and send the processing results to an external device for storage and backup.

[0054] In one possible implementation, Figure 1 As shown, the communication module may include a serial communication unit, a network communication unit and a dial switch unit; the dial switch unit is connected to the serial communication unit, the network communication unit and the controller respectively, and the external device is connected to the serial communication unit and the network communication unit respectively, and the dial switch unit is used to switch the communication mode between the controller and the external device; wherein the communication mode includes a serial communication mode and a network communication mode. It can be understood that the serial communication unit can realize serial communication between the controller and the external device, while the network communication unit is used to realize network communication (such as Ethernet communication) between the controller and the external device; the dial switch unit includes a dial switch, and the user can select the appropriate communication mode through the dial switch according to the actual application requirements. The controller can identify the corresponding communication mode (serial communication mode or network communication mode) by reading the state of the dial switch to switch to the corresponding communication unit; the above-mentioned communication module combines serial communication, network communication and the dial switch to realize flexible switching of communication modes. It should be noted that the relevant network communication parameters of the above-mentioned communication module can be preset in the controller or set by an external device, which is not limited here.

[0055] Figure 3 It is a detailed structural diagram of the serial communication unit, such as Figure 3 As shown, the serial communication unit may include an RS485 communication component, an RS232 communication component, a mode selection interface and a serial wiring interface; the RS485 communication component is connected to the mode selection interface and the serial wiring interface respectively, the RS232 communication component is connected to the mode selection interface and the serial wiring interface respectively, the mode selection interface is connected to the DIP switch unit, and the serial wiring interface is connected to an external device via a serial communication line.

[0056] Figure 4 The circuit diagram of a serial communication unit is shown as an example. Figure 4As shown, the RS485 communication components of the serial communication unit include an RS485 chip U2, a first self-recovery fuse F1, a second self-recovery fuse F2, a first transient voltage suppression diode TVS1, a second transient voltage suppression diode TVS2 and an attached capacitor C10 and resistors R10 to R12; pin 1 of the RS485 chip U2 is connected to pin 3 of the mode selection interface J1, pins 2 and 3 of the RS485 chip U2 are externally connected to the chip enable drive signal, pin 4 of the RS485 chip U2 can be connected to the controller for receiving the serial communication configuration parameters output by the controller, pin 5 of the RS485 chip U2 is grounded, and one end of pin 6 of the RS485 chip U2 is respectively connected to pin 1 of the interface terminal J2, one end of the resistor R11, port 1 of the second transient voltage suppression diode TVS2 and the second self-recovery fuse F2 One end of the RS485 chip U2 is connected to pin 1 of the serial wiring interface P1, and the other end of the second resettable fuse F2 is connected to pin 1 of the serial wiring interface P1, and the other end of the resistor R11 is connected to the 5V external voltage VDD; one end of pin 7 of the RS485 chip U2 is respectively connected to one end of the resistor R12, one end of the resistor R10, port 2 of the first transient voltage suppression diode TVS1 and one end of the first resettable fuse F1, the other end of the first resettable fuse F1 is connected to pin 2 of the serial wiring interface P1, the other end of the resistor R12 is connected to pin 2 of the interface terminal J2, port 1 of the first transient voltage suppression diode TVS1 is connected to port 1 of the second transient voltage suppression diode TVS2 and then grounded, and the other end of the resistor R10 is grounded; pin 8 of the RS485 chip U2 is respectively connected to one end of the capacitor C10 and the 5V external voltage VDD, and the other end of the capacitor C10 is grounded.

[0057] like Figure 4As shown, the RS232 communication components of the serial communication unit include an RS232 chip U4, a third self-recovery fuse F3, a fourth self-recovery fuse F4, a third transient voltage suppression diode TVS3, a fourth transient voltage suppression diode TVS4 and attached capacitors C11 to C15; Pin 11 of the RS232 chip U4 can be connected to the controller for receiving serial communication configuration parameters output by the controller, Pin 12 of the RS232 chip U4 is connected to Pin 1 of the mode selection interface J1, Pin 12 of the RS232 chip U4 is respectively connected to one end of the third self-recovery fuse F3 and Port 2 of the third transient voltage suppression diode TVS3, and the other end of the third self-recovery fuse F3 is connected to Pin 3 of the serial wiring interface P1; Pin 13 of the RS232 chip U4 is respectively connected to one end of the third self-recovery fuse F3 and Port 2 of the third transient voltage suppression diode TVS3, and the other end of the third self-recovery fuse F3 is connected to Pin 1 of the serial wiring interface P1. Pin 3 of interface P1 is connected; Pin 14 of RS232 chip U4 is respectively connected to one end of the fourth self-recovery fuse F4 and port 1 of the fourth transient voltage suppression diode TVS4, the other end of the fourth self-recovery fuse F4 is connected to pin 4 of serial wiring interface P1, and port 2 of the fourth transient voltage suppression diode TVS4 is connected to port 1 of the third transient voltage suppression diode TVS3 and then grounded; Pin 16 of RS232 chip U4 is respectively connected to one end of capacitor C11, one end of capacitor C12 and 5V external voltage VDD, and pin 2 of RS232 chip U4 is connected to the other end of capacitor C12; Pin 1 and pin 3 of RS232 chip U4 are connected through capacitor C13; Pin 4 and pin 5 of RS232 chip U4 are connected through capacitor C15; Pin 6 of RS232 chip U4 is grounded through capacitor C14, and Pin 15 of RS232 chip U4 and the other end of capacitor C11 are both grounded. In the circuit structure of the serial communication unit, when pins 1 and 2 of mode selection interface J1 are short-circuited, RS232 serial communication mode is adopted; when pins 2 and 3 of mode selection interface J1 are short-circuited, RS485 serial communication mode is adopted. Transient voltage suppressor diodes TVS1-TVS4 provide lightning protection, overvoltage protection, and anti-interference functions, while resettable fuses F1-F4 provide overcurrent and overheating protection and automatic recovery functions. It should be noted that the RS485 chip U2 can be a MAX1487, and the RS232 chip U4 can be a MAX3232, or other models that achieve the same or similar functions, and this embodiment does not limit this.

[0058] Figure 5 It is a detailed structural diagram of the network communication unit, such as Figure 5As shown, the network communication unit may include an Ethernet transceiver, a network transformer, an RJ45 interface and a network cable crimping interface; the Ethernet transceiver is connected to the DIP switch unit and the network transformer respectively, the network transformer is connected to the RJ45 interface and the network cable crimping interface respectively, and the RJ45 interface and the network cable crimping interface are connected to external devices through corresponding network cables. The Ethernet transceiver may include an Ethernet transceiver chip, which has an RMII interface (Reduced Media Independent Interface) and an MDI interface (Medium Dependent Interface). The RMII interface can be connected to the controller through the DIP switch unit, and the MDI interface is connected to one end of the network transformer. The other end of the network transformer is connected to the RJ45 interface and the network cable crimping interface respectively, thereby providing two Ethernet wiring methods: RJ45 interface and network cable crimping interface; different network cables can be selected according to the type of interface to establish a connection with the external device. The above-mentioned network cable crimping interface generally includes 4 wiring terminals, namely send +, send -, receive +, and receive -.

[0059] In addition, since in actual applications the dynamic track scale data collector is usually installed in outdoor environments such as railways, it may be exposed to various weather conditions (such as heavy rain, blizzards or high humidity environments), which can easily cause equipment failure in the long run and reduce the service life of the dynamic track scale data collector. Therefore, in a feasible embodiment, the dynamic track scale data collector may also include a waterproof housing with a protection level of IP68. IP68 protection means that the device can be immersed in water at a depth of 1.5 meters for a long time without being damaged. A waterproof housing with this protection level can not only effectively protect the internal electronic components of the dynamic track scale data collector from the influence of humid environmental conditions such as rain, moisture, and accumulated water, but also play a role in dustproofing, thereby enhancing the adaptability of the dynamic track scale data collector in harsh environments. Figure 6 This is a schematic diagram of the waterproof housing structure of an example dynamic track scale data collector. Figure 6 As shown, the waterproof housing may include a housing body 1, an upper cover 2, and a cable connector 3 provided on the housing body. The cable connector 3 may be used to connect the analog-to-digital conversion module and the corresponding load cell. The power supply cable may also enter the interior of the waterproof housing through the cable connector 3 to supply power to the components inside the housing. A waterproof sealing member (such as a waterproof sealing strip, etc.) is provided between the housing body 1 and the upper cover 2 and crimped together by screws 4. The housing body 1 and the upper cover 2 are both made of stainless steel, and the cable connector 3 is a stainless steel waterproof gland. This enhances the corrosion resistance of the waterproof housing and effectively extends the service life of the dynamic track scale data collector.

[0060] As can be understood, the dynamic track scale data collector provided in this embodiment is equipped with two analog-to-digital conversion modules. Each analog-to-digital conversion module is connected to a set of weighing sensors to convert the weight millivolt signals collected by the weighing sensors into weight digital signals and output them. The controller can alternately receive the two weight digital signals and process the received weight digital signals to obtain collected data. By alternately receiving the weight digital signals output by the two analog-to-digital conversion modules through the controller, the collector reduces the amount of parallel transmission of weight data signals, thereby effectively improving the data transmission rate of the dynamic track scale data collector.

[0061] Furthermore, the present application also proposes a dynamic track scale system, which may include the above-mentioned dynamic track scale data collector, two sets of weighing sensors and a host computer; Figure 7 As shown, Figure 7 The figure is a schematic diagram of the structure of the dynamic track scale system. The specific structure of the dynamic track scale data collector can be referred to the above embodiments. Since the dynamic track scale system of this application adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here.

[0062] Among them, two groups of weighing sensors are respectively arranged at different positions of the track weighing platform, and each weighing sensor is connected to a corresponding analog-to-digital conversion module, which can be used to collect the weight millivolt signal of the rail vehicle; the weighing sensor can be a pressure sensor (such as a piezoelectric sensor, a strain gauge sensor, etc.); taking the strain gauge sensor as an example, when the vehicle passes through the track weighing platform, the gravity of the vehicle acts on the strain gauge to cause it to deform. The strain gauge sensor converts the deformation on it into a weight millivolt signal and outputs it to the corresponding analog-to-digital conversion module to convert it into a weight digital signal for subsequent calculation and analysis.

[0063] The host computer is connected to the dynamic track scale data collector, and can analyze and process the collected data to obtain the track scale measurement results. As mentioned in the above embodiment, the controller in the dynamic track scale data collector can correct the weight digital signal and perform other processing to obtain the collected data. The controller can send the collected data to the host computer through the communication module for further analysis and processing; wherein, the host computer can be a metering computer specifically used for track scale measurement. In a feasible embodiment, the dynamic track scale system can also include a vehicle number recognition device, which is connected to the host computer and can be used to identify the vehicle number information of the rail vehicle and output the vehicle number information to the host computer. In actual application, when a vehicle passes by the track weighing platform, the vehicle number recognition device can automatically identify the vehicle number information of the current vehicle and send it to the host computer (such as a metering computer); at the same time, the host computer will also receive the collected data sent by the dynamic track scale data collector and match it with the received vehicle number information to perform vehicle identification, vehicle upper scale, and vehicle lower scale judgment, and issue a specific track scale measurement result. The track scale measurement result can be bound to the vehicle number information to facilitate subsequent traceability and inquiry.

[0064] It can be understood that the dynamic track scale system provided in this embodiment adopts the dynamic track scale data acquisition instrument of the above embodiment for signal acquisition and transmission, which can reduce the parallel transmission amount of weight data signals, thereby effectively improving the data transmission rate of the dynamic track scale system.

[0065] The above description is only part of the embodiments of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A dynamic track scale data collector, characterized in that: The dynamic track scale data collector comprises: Two analog-to-digital conversion modules, each of which is connected to a group of weighing sensors, and is used to convert the weight millivolt signal collected by the weighing sensor into a weight digital signal and output the weight digital signal; a controller, connected to the two analog-to-digital conversion modules respectively, for alternately receiving the two weight digital signals and processing the received weight digital signals to obtain collected data; The communication module is connected to the controller and the external device respectively, and is used to realize information interaction between the controller and the external device.

2. The dynamic track scale data collector according to claim 1, characterized in that: The communication module includes a serial communication unit, a network communication unit and a DIP switch unit; The dip switch unit is connected to the serial communication unit, the network communication unit and the controller respectively, and the external device is connected to the serial communication unit and the network communication unit respectively. The dip switch unit is used to switch the communication mode between the controller and the external device; wherein the communication mode includes a serial communication mode and a network communication mode.

3. The dynamic track scale data collector according to claim 2, characterized in that: The serial communication unit includes an RS485 communication element, an RS232 communication element, a mode selection interface and a serial wiring interface; The RS485 communication element is connected to the mode selection interface and the serial wiring interface respectively, the RS232 communication element is connected to the mode selection interface and the serial wiring interface respectively, the mode selection interface is connected to the dip switch unit, and the serial wiring interface is connected to the external device via a serial communication line.

4. The dynamic track scale data collector according to claim 2, characterized in that: The network communication unit includes an Ethernet transceiver, a network transformer, an RJ45 interface and a network cable crimping interface; The Ethernet transceiver is connected to the DIP switch unit and the network transformer respectively, the network transformer is connected to the RJ45 interface and the network cable crimping interface respectively, and the RJ45 interface and the network cable crimping interface are connected to the external device through corresponding network cables respectively.

5. The dynamic track scale data collector according to claim 1, characterized in that: The dynamic track scale data collector also includes a waterproof shell, and the protection level of the waterproof shell is IP68.

6. The dynamic track scale data collector according to claim 5, characterized in that: The waterproof housing includes a shell body, an upper cover and a cable connector arranged on the shell body; the cable connector is used to connect the analog-to-digital conversion module and the corresponding weighing sensor; a waterproof sealing piece is provided between the shell body and the upper cover and is crimped by screws.

7. The dynamic track scale data collector according to claim 6, characterized in that: The shell body and the upper cover are both made of stainless steel, and the cable connector is a stainless steel waterproof gland.

8. The dynamic track scale data collector according to any one of claims 1 to 7, characterized in that: The analog-to-digital conversion module includes a delta-sigma type 24-bit analog-to-digital conversion chip.

9. A dynamic track scale system, characterized in that: The dynamic track scale system includes: The dynamic track scale data collector according to any one of claims 1 to 8; Two groups of weighing sensors, the two groups of weighing sensors are respectively arranged at different positions of the rail weighing platform, each weighing sensor is correspondingly connected to one of the analog-to-digital conversion modules, and is used to collect the millivolt signal of the weight of the rail vehicle; The host computer is connected to the dynamic track scale data collector and is used to analyze and process the collected data to obtain the track scale measurement results.

10. The dynamic rail scale system according to claim 9, characterized in that: The dynamic track scale system also includes a vehicle number recognition device connected to the host computer, which is used to identify the vehicle number information of the rail vehicle and output the vehicle number information to the host computer.

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