Circuit device of geometric parameter measuring instrument for track overhead line system

Abstract

The utility model relates to the field of measuring instruments, in particular to a circuit device of a geometric parameter measuring instrument for a track overhead line system. The circuit device is installed in the contact network geometric parameter measuring instrument. The circuit device assembly comprises a battery management unit, a core main control unit, a signal parameter monitoring unit and a wireless transmission unit. The core main control unit is connected with the charging and discharging power supply management module through an IIC bus to realize charging and discharging management of various rated voltages, the core main control unit is connected with the WIFI communication module and the dual-channel hard light laser module through a TTL serial port for control, and the core main control unit is connected with the signal input and output end of the magnetic encoder application module through an RS485 serial port for control. And the core main control unit controls each module group to sample and measure the rail transit overhead line system. The precision of parameters measured by the module is higher, errors of various required calculated values of the follow-up overhead line system are smaller, calculated data are more accurate compared with real values, and the consistency of electrical construction and maintenance of the overhead line system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of measuring instrument especially relates to a track catenary geometric parameter measuring instrument circuit device. BACKGROUND

[0002] The catenary is important power supply equipment of electrified track, and the train is powered through the catenary when running at high speed. In order to ensure the safety and reliability of the catenary power supply, it is necessary to pre-inspect, patrol and maintain each geometric parameter of the catenary in the railway construction stage and operation stage. As the train running speed is getting faster and faster, the power supply requirement is getting higher and higher, so the geometric parameter measurement precision requirement of the catenary is getting higher and higher, the performance requirement of the detection equipment is getting higher and higher, and the reliability requirement of the detection equipment is getting higher and higher.

[0003] The existing track catenary geometric parameter measuring instrument in the railway industry is similar in function, and all realizes the measurement and collection of required parameters through various sensors in the measuring instrument. The measured and collected parameters include line height, track width, track height, inclination, slope angle and real-time picture. In the prior art, the parameters of the collected sensor are allocated through the core 51 single-chip microcomputer (MCU), various data functions are realized through local buttons, and are displayed on the local liquid crystal screen. The hardware device of the existing measuring instrument is fixed in the measuring instrument through buckles or screws. The battery module of the existing product cannot realize fast charging, and needs to be taken out from the main machine as a whole for separate charging when charging.

[0004] In the prior art, the hardware device is fixed in the measuring instrument through buckles or screws, and the wire-to-board connection on the hardware device is realized through the plug-in connector. This results in weak anti-vibration performance of the hardware device when used outdoors, and the plug-in connector is prone to loosening or poor contact due to vibration, resulting in measurement failure.

[0005] In order to realize the measurement of various parameters, it is particularly important to design a track catenary geometric parameter measuring instrument circuit device. Utility model content

[0006] The application provides a track catenary geometric parameter measuring instrument circuit device, which adopts the following technical scheme:

[0007] A kind of track overhead line system geometric parameter measuring instrument circuit device, circuit device is installed in overhead line system geometric parameter measuring instrument, circuit device component includes battery management unit, core main control unit, signal parameter monitoring unit and wireless transmission unit;Battery management unit includes charge-discharge power management module, charging lithium battery, electric quantity linear display module;Signal parameter monitoring unit includes double-channel strong light laser module, magnetic encoder application module, inclination gyroscope application module;Wireless transmission unit includes WIFI communication module and zoom camera module;Core main control unit is connected with charge-discharge power management module by IIC bus and realizes the charge-discharge management of multiple rated voltages, core main control unit is connected with WIFI communication module and double-channel strong light laser module by TTL serial port and control, core main control unit is connected with magnetic encoder application module signal input and output terminal by RS485 serial port and control, core main control unit controls each module group to track traffic overhead line system and carries out sampling and measurement.

[0008] Optionally, each module component on the circuit device is welded with the circuit board.

[0009] Optionally, a plurality of on-board suspension springs are arranged on the upper and lower sides of the circuit device shell, and a mounting plate is arranged on the left and right sides of the circuit device shell to fix the circuit device stably.

[0010] Optionally, the core main control unit adopts Qingke V4F micro-processing architecture.

[0011] Optionally, the working temperature range of the circuit device meets-40℃~+85℃.

[0012] Optionally, the measurement accuracy of the circuit device is ≤±3mm.

[0013] Optionally, the zoom camera module is connected with the WIFI communication module body through a USB2.0 interface.

[0014] Optionally, the WIFI communication module body adopts a high-shielding 2.4GHz radio frequency chip.

[0015] Optionally, a temperature and humidity module is further arranged beside the zoom camera module.

[0016] Optionally, the discharge power management module directly realizes ≥18W fast charging on the built-in battery through a TYPE-C interface; the built-in battery can reversely charge a mobile phone through the TYPE-C interface.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The new hardware circuit design, interface protection and anti-interference processing improve the stability of the device system;

[0019] 2. The module measures the parameter with higher accuracy, so that the error of subsequent catenary various demand calculation value is smaller, the calculation data is more accurate compared with the true value, and the consistency of catenary electrical construction and maintenance is improved;

[0020] 3. The working temperature range is wider, the use of the same set of measuring instrument is more widely covered, and is not restricted by high-cold or extremely hot environment;

[0021] 4. The data is sent in real time, the steps of local storage and manual data transfer can be reduced, the hotspot signal generated by the WIFI communication module of the hardware device is connected through the mobile phone, the data is sent to the mobile phone APP in real time, then connected to the public network, and the data transmission efficiency is improved;

[0022] 5. The charge and discharge management unit can realize rapid charging of the internal power supply of the measuring instrument, and reverse charging of the internal power supply of the measuring instrument to mobile devices such as mobile phones and tablets, and improve the functional diversity;

[0023] 6. Since the measuring instrument is used in outdoor rail environment, there is a risk of vibration during use, in order to avoid the risk of hardware damage or wire disconnection caused by device vibration, the on-board suspension spring installation and wire hole welding method are adopted, which effectively avoids the risk. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will describe the drawings needed to be used in the embodiment or the prior art description. Obviously, the technical scheme described in the description in combination with the drawings is only some embodiments of the present application, and for those skilled in the art, other embodiments and drawings can be obtained without creative labor on the basis of the embodiments shown in the drawings.

[0025] Figure 1 It is a circuit device module distribution diagram of the present application.

[0026] Figure 2 It is a circuit device installation schematic diagram of the present application.

[0027] Figure 3 It is a magnetic encoder application module circuit diagram of the present application.

[0028] Figure 4 It is a WIFI communication module circuit diagram of the present application.

[0029] Figure 5 It is a camera module circuit diagram of the present application.

[0030] Figure 6 It is a rotary laser range finder interface circuit diagram of the present application.

[0031] Figure 7 is the interface circuit diagram of the transverse laser range finder.

[0032] In the figure: 1, circuit device;2, core main control unit;3, double-channel strong light laser module;4, magnetic encoder application module;5, WIFI communication module;6, zoom camera module;7, charge and discharge power management module;8, charging lithium battery;9, linear display module of power;10, temperature and humidity module;20, on-board suspension spring. DETAILED DESCRIPTION

[0033] The technical solutions of the embodiments of the utility model will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0034] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] The embodiment of the utility model provides a track catenary geometric parameter measuring instrument circuit device.

[0037] Embodiment: a track catenary geometric parameter measuring instrument circuit device, the circuit device 1 component includes battery management unit, core main control unit 2, signal parameter monitoring unit and wireless transmission unit.

[0038] The circuit device 1 is installed in the overhead line system geometry parameter measuring instrument, and cooperates with the specific outer shape structure of the measuring instrument to realize the functions of sampling and measuring the line height, track width, track height, inclination angle, slope angle, real-time picture and other parameters of the rail transit overhead line.

[0039] The core master control unit 2 adopts Qingke V4F micro-processing architecture and belongs to a high-precision interconnected processor. Each functional sensor module selects a high-precision sensor, the sensor measurement accuracy meets ≤±3mm, and the working temperature range meets-40℃~+85℃. A plurality of on-board suspension springs 20 are arranged on the upper and lower sides of the shell of the circuit device 1 in the measuring instrument, and a rotating plate is installed on the left and right sides of the shell of the circuit device 1 to fix the main body of the circuit device 1. The on-board suspension springs 20 are arranged to realize the suspension installation of the circuit device 1 in the up-down direction, thereby greatly increasing the anti-vibration performance of the hardware device. Each module component on the circuit device 1 is stably connected with the circuit board through welding, thereby absolutely avoiding functional failure caused by poor contact or external vibration.

[0040] The battery management unit includes a charge-discharge power management module 7, a charging lithium battery 8 and an electric quantity linear display module 9. The charge-discharge power management module 7 is connected with the core master control unit 2 through an IIC bus. Through the design of an Rbset resistor of a fast charging chip module, the charge-discharge management of multiple rated voltages can be realized, and the rated voltage can be designed as 4.2V~4.5V. Through the design of an Rcset resistor, the Soc measurement of multiple specifications of battery capacity can be realized, and the measured battery capacity can be designed to include 10000mAh, 20000mAh and 30000mAh. Through the design of a multi-channel bidirectional NMOS tube circuit, multi-channel power input / output is realized, and the output interface types include USB_TYPE_A, USB_TYPE_C and LIGHTING interface. The charging lithium battery 8 can have a transient discharge current of up to 20A, a high-low temperature characteristic of-20℃~85℃, a rated voltage of 4.35V and a standard capacity of 20000mAh. The electric quantity linear display module 9 is connected to the positive and negative ends of the charging battery. Through the design of different RF and RI values, different gains of four operational amplifiers are realized, thereby corresponding to display 25%, 50%, 75% and 100% of the battery capacity.

[0041] The signal parameter monitoring unit comprises a double-channel strong light laser module 3, a magnetic encoder application module 4 and an inclination gyroscope application module. The double-channel strong light laser module 3 comprises a rotary laser range finder interface and a transverse laser range finder interface, which are connected with the core main control unit 2 through a TTL serial port and have two power voltage domains of 5V and 3.3V; a backflow prevention diode with a low forward voltage drop is designed on the input power series circuit, and a voltage stabilizing tantalum capacitor with a low parasitic resistance is designed on the power series circuit, so as to enhance the functional stability of the laser module during high-power transient operation; the signal input and output end of the magnetic encoder application module 4 is connected with the core main control unit 2 through an RS485 serial port, and in the RS485 communication circuit, a self-restoring fuse is connected in series in a differential circuit, and a transient suppression diode and an electrostatic protection diode are connected in parallel, so as to improve the anti-interference ability of serial communication, and the main interference protection includes electrostatic discharge and signal pulse group interference.

[0042] The wireless transmission unit comprises a WIFI communication module 5 and a zoom camera module 6. The interactive interface of the WIFI communication module 5 is connected with the core main control unit 2 through a TTL serial port, the WIFI communication module 5 body adopts a high-shielding 2.4GHz radio frequency chip, a plurality of NPN triodes are added to control the on-off of the function pins, the function pins include a reset pin RESET, a transceiver pin TX / RX, a sleep pin JUMP_START, so as to realize the switching of signal interaction, wake-up and sleep, reduce the overall power consumption of the WIFI communication module 5, and reduce the heat generation; the zoom camera module 6 is connected with the WIFI communication module body through a USB2.0 interface; an anti-interference magnetic bead and a current limiting resistor are connected in series on the camera differential signal line, so as to improve the differential signal anti-differential mode interference ability; a backflow prevention diode with a low forward voltage drop is connected in series on the camera power line, and a voltage stabilizing tantalum capacitor with a low parasitic resistance is connected in parallel on the power line, so as to enhance the picture stability of the zoom camera module during high-power transient operation. A temperature and humidity module 10 is also arranged beside the zoom camera module 6.

[0043] The device adopts a multi-floating point operation microprocessor (MCU) with a RISC-V architecture independently developed in China, and combines a high-precision sensor, so that the parameter measurement accuracy is ≤±3mm; the hardware device installed in the measuring instrument uses full-industrial-grade devices with a full-range selection working range of-40℃ to +85℃, so as to improve the adaptability of the hardware device and the entire measuring instrument to various temperatures in different regions, and reduce the influence of temperature change factors on parameter accuracy.

[0044] The WIFI communication module 5 autonomously generates an AP hotspot, realizes the function that local various data is transmitted to a mobile phone / tablet APP platform through WIFI data flow in real time, and the same type of device on the market does not have a wireless transmission function, only a local record display and a U disk transmission function; through the installation of the on-board suspension spring on the hardware device, the wire-to-board is welded in a full-hole manner, and the anti-vibration performance of the hardware device in each dimension is greatly improved. The charge and discharge power management module 7 can realize ≥18W fast charging of the built-in battery through the TYPE-C interface; and the built-in battery can be reversely charged to a mobile phone through the TYPE-C interface, and plays the role of a mobile power supply.

[0045] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view. The scope of the present application is defined by the appended claims, not the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0046] In addition, it should be understood that although the present application is described in the specification in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A circuit device of a track overhead line system geometry parameter measuring instrument, the circuit device is installed in the overhead line system geometry parameter measuring instrument, characterized in that: The circuit device assembly comprises a battery management unit, a core host unit, a signal parameter monitoring unit and a wireless transmission unit. The battery management unit comprises a charge-discharge power management module, a charging lithium battery and a power linear display module. The signal parameter monitoring unit comprises a double-channel strong light laser module, a magnetic encoder application module and a tilt gyroscope application module; and the wireless transmission unit comprises a WIFI communication module and a zoom camera module. The core host unit is connected with the charge-discharge power management module through an IIC bus to realize charge-discharge management of various rated voltages, is connected with the WIFI communication module and the double-channel strong light laser module through a TTL serial port for control, is connected with the magnetic encoder application module through an RS485 serial port for signal input and output control, and controls various module groups to sample and measure the rail transit contact network.

2. The circuit arrangement of a track catenary geometry parameter measuring instrument according to claim 1, characterized in that Each module component on the circuit device is welded with a circuit board.

3. The circuit arrangement of a track catenary geometry parameter measuring instrument according to claim 1, characterized in that: A plurality of on-board suspension springs are arranged on the upper and lower sides of the circuit device shell, and a mounting plate is arranged on the left and right sides of the circuit device shell to fix the circuit device.

4. The circuit arrangement of a track catenary geometry parameter measuring instrument according to claim 1, characterized in that: The core host unit adopts a Qingke V4F micro-processing architecture.

5. The circuit arrangement of a track catenary geometry parameter measuring instrument according to claim 1, characterized in that: The working temperature range of the circuit device satisfies -40℃~+85℃.

6. The circuit arrangement of a track catenary geometry parameter measuring instrument according to claim 1, characterized in that: The measurement accuracy of the circuit device is ≤±3mm.

7. The circuit arrangement of a track catenary geometry parameter measuring instrument according to claim 1, characterized in that: The zoom camera module is connected with the WIFI communication module body through a USB2.0 interface.

8. The circuit arrangement of a track catenary geometry parameter measuring instrument according to claim 1, characterized in that: The WIFI communication module body adopts a high-shielding 2.4GHz radio frequency chip.

9. The circuit arrangement of a track catenary geometry parameter measuring instrument according to claim 1, characterized in that: A temperature and humidity module is arranged beside the zoom camera module.

10. The circuit arrangement of a track catenary geometry parameter measuring instrument according to claim 1, characterized in that: The discharge power management module directly realizes ≥18W fast charging for the built-in battery through a TYPE-C interface; and the built-in battery can reversely charge a mobile phone through the TYPE-C interface.

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