High-speed rail operation environment monitoring device

Abstract

The utility model relates to a high-speed rail operation environment monitoring device, which comprises a power conversion circuit, a voltage division circuit, an AD sampling circuit, a controller, a temperature and humidity sensor, a memory and a shell, the voltage division circuit, the AD sampling circuit, the controller and the memory are all positioned in the shell, and the controller is respectively connected with the AD sampling circuit, the temperature and humidity sensor and the memory. The temperature and humidity sensor is located in the shell, at least two opposite side faces of the shell are each provided with a ventilation hole array composed of a plurality of first ventilation holes, one bottom face of the shell serves as a mounting face, and the other bottom face of the shell is provided with a plurality of second ventilation holes. Compared with the prior art, the temperature and humidity sensor can solve the problem of interface looseness caused when the temperature and humidity sensor is arranged outside the shell, and the temperature and humidity detection precision is not reduced.

Description

Technical Field

[0001] This utility model relates to a temperature and humidity acquisition device, and in particular to a high-speed rail operating environment monitoring device. Background Technology

[0002] The existing high-speed rail equipment is all in a closed space during operation, and there is no air circulation between its operating environment and the external environment. The power supply used and the temperature and humidity changes during operation are different from the temperature and humidity environment that the internal equipment needs to adapt to. Therefore, it is necessary to configure an independent environmental monitoring device.

[0003] In response, some existing technologies provide environmental monitoring devices. For example, CN201780680U discloses a temperature and humidity data acquisition instrument, including a main unit and a sensor head module. The sensor head module consists of a sensor head interface plug, a cable, and a probe. The probe contains a temperature-sensing resistor, a humidity-sensitive capacitor, a dual-time base integrated circuit, and peripheral circuits. The main unit contains a signal processing module, a data acquisition module, a temperature and humidity signal conversion switch, a microcontroller, an LCD display module, and a communication module. The signal processing module consists of temperature and humidity processing circuits. The data acquisition module consists of a single-channel A / D converter, an A / D converter reference voltage source, and a sampling timing control circuit. The communication module consists of a dedicated RS-232 interface chip. The microcontroller connects to a computer through the dedicated RS-232 interface chip. This temperature and humidity data acquisition instrument integrates data acquisition, graphical display, and storage functions, and can represent real-time temperature and humidity conditions as data and temperature and humidity curves.

[0004] However, the probe of this temperature and humidity data acquisition instrument is located on the outside of the casing and is connected to the internal circuit through the sensor interface socket J1 on the surface of the casing. When this method is applied to high-speed trains, the interface may become loose due to the influence of external objects, which may lead to malfunction. Utility Model Content

[0005] The purpose of this utility model is to provide a high-speed rail operating environment monitoring device. By providing a ventilation hole array consisting of multiple first ventilation holes (7-1) on at least two opposite sides of the outer shell, and multiple second ventilation holes on a bottom surface, the sampling accuracy of temperature and humidity is not affected when the temperature and humidity sensor (5) is located inside the outer shell (7). This solves the problem of loose interface caused by the temperature and humidity sensor (5) being outside the outer shell (7) and does not reduce the accuracy of temperature and humidity detection.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A high-speed rail operating environment monitoring device includes a power conversion circuit, a voltage divider circuit, an AD sampling circuit, a controller, a temperature and humidity sensor, a memory, and a housing. The voltage divider circuit, AD sampling circuit, controller, and memory are all located in the housing, and the controller is connected to the AD sampling circuit, the temperature and humidity sensor, and the memory respectively. The temperature and humidity sensor is located inside the housing, and the housing has a ventilation hole array consisting of multiple first ventilation holes on at least two opposite sides. One bottom surface of the housing serves as a mounting surface, and the other bottom surface has multiple second ventilation holes.

[0008] The first ventilation hole is elongated and all the first ventilation holes are arranged in parallel.

[0009] The voltage divider circuit includes a first resistor and a second resistor. One end of the first resistor is connected to the positive terminal of the output of the power conversion circuit, and the other end is connected to one end of the second resistor and the input terminal of the AD sampling circuit. The other end of the second resistor is connected to the negative terminal of the output of the power conversion circuit.

[0010] The outer casing is a metal casing.

[0011] The first ventilation hole is inclined relative to the bottom surface of the outer casing.

[0012] The first ventilation holes on the two opposite sides of the outer casing are tilted at the same angle and in the same direction.

[0013] The first ventilation holes on the two opposite sides of the outer casing are arranged in a one-to-one correspondence, and the two corresponding first ventilation holes are symmetrically arranged.

[0014] The bottom surface of the outer casing, which has a second ventilation hole, is arched, with the arched protrusion facing outward.

[0015] The housing includes a housing body and a base plate connected by screws, the base plate serving as the mounting surface of the housing.

[0016] An insulating fixing plate is provided on one side of the housing for placing cables and insulation.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By providing an array of ventilation holes consisting of multiple first ventilation holes on at least two opposite sides of the housing and multiple second ventilation holes on a bottom surface, the sampling accuracy of temperature and humidity can be maintained even when the temperature and humidity sensor is located inside the housing. This solves the problem of loose interface caused by the temperature and humidity sensor being outside the housing and does not reduce the accuracy of temperature and humidity detection.

[0019] 2. The first ventilation hole is elongated and all the first ventilation holes are arranged in parallel. By setting it in a form similar to a louver, the accuracy of humidity detection can be further improved.

[0020] 3. The voltage divider circuit includes a first resistor and a second resistor, which can provide a more stable voltage.

[0021] 4. The outer casing is made of metal, which reduces the interference of the external electromagnetic environment on its own monitoring function and increases the reliability of monitoring.

[0022] 5. The bottom surface of the outer casing with the second ventilation hole is arched, and the arched protrusion faces outward, which can improve the structural strength. Attached Figure Description

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the main body of the outer shell.

[0025] Figure 3 This is a schematic diagram of a voltage divider circuit;

[0026] Figure 4 This is a schematic diagram of the inside of the main body of the outer casing;

[0027] The components include: 1. Power conversion circuit, 2. Voltage divider circuit, 3. AD sampling circuit, 4. Controller, 5. Temperature and humidity sensor, 6. Memory, 7. Housing, 8. RTC clock, 2-1. First resistor, 2-2. Second resistor, 7-1. First ventilation hole, 7-2. Second ventilation hole, 7-3. Insulating fixing plate, 7-4. Stud. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "proximal end," "farthest end," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0031] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] A high-speed rail operating environment monitoring device, such as Figure 1 As shown, consistent with the prior art, it includes a power conversion circuit 1, a voltage divider circuit 2, an AD sampling circuit 3, a controller 4, a temperature and humidity sensor 5, a memory 6, and a housing 7. The voltage divider circuit 2, the AD sampling circuit 3, the controller 4, and the memory 6 are all located in the housing 7, and the controller 4 is connected to the AD sampling circuit 3, the temperature and humidity sensor 5, and the memory 6 respectively. However, the difference between this application and the prior art is that the temperature and humidity sensor 5 is located inside the housing 7, and the housing 7 has a ventilation hole array composed of multiple first ventilation holes 7-1 on at least two opposite sides. One bottom surface of the housing 7 serves as the mounting surface, and the other bottom surface has multiple second ventilation holes 7-2.

[0035] Thus, by providing an array of ventilation holes consisting of multiple first ventilation holes 7-1 on at least two opposite sides of the housing, and providing multiple second ventilation holes on a bottom surface, the sampling accuracy of temperature and humidity can be achieved without affecting the temperature and humidity when the temperature and humidity sensor 5 is located inside the housing 7. This solves the problem of interface loosening caused by the temperature and humidity sensor 5 being outside the housing 7, and does not reduce the accuracy of temperature and humidity detection.

[0036] Specifically, in most embodiments, the first ventilation hole 7-1 is elongated and all the first ventilation holes 7-1 are arranged in parallel. By setting it in a form similar to a louver, it can achieve a function similar to a ventilation louver, which can further improve the accuracy of humidity detection.

[0037] In this embodiment, the voltage divider circuit 2 includes a first resistor 2-1 and a second resistor 2-2. One end of the first resistor 2-1 is connected to the positive terminal of the output of the power conversion circuit 1, and the other end is connected to one end of the second resistor 2-2 and the input terminal of the AD sampling circuit 3. The other end of the second resistor 2-2 is connected to the negative terminal of the output of the power conversion circuit 1. The voltage divider circuit 2, including the first resistor 2-1 and the second resistor 2-2, can provide a more stable voltage.

[0038] In most embodiments, the outer shell 7 is a metal shell, which reduces the interference of the external electromagnetic environment on its own monitoring function and increases the reliability of monitoring. Specifically, in this embodiment, the outer shell 7 is made of aluminum alloy, which has greater structural strength, strong pressure resistance, and can meet the needs of the unstable working environment on high-speed rail, and has strong environmental adaptability.

[0039] Furthermore, the first ventilation hole 7-1 is inclined relative to the bottom surface of the outer casing 7, and in most embodiments, the inclination angle and direction of the first ventilation holes 7-1 provided on the two opposite sides of the outer casing 7 are the same. In particular, in this embodiment, the first ventilation holes 7-1 provided on the two opposite sides of the outer casing 7 correspond one-to-one, and the corresponding two first ventilation holes 7-1 are symmetrically arranged.

[0040] Furthermore, in this embodiment, the bottom surface of the outer casing 7 with the second ventilation hole is arched, and the arched protrusion is set outward, which can improve the structural strength.

[0041] Similar to existing technologies, the housing 7 includes a housing body and a base plate connected by screws. The base plate serves as the mounting surface of the housing 7. The associated first ventilation hole 7-1 and second ventilation hole 7-2 are both located on the housing body. A plurality of studs 7-4 are provided on the housing body for fixing screws.

[0042] In addition, an insulating fixing plate is provided on one side of the outer casing 7 for placing cables and insulation, mainly serving to prevent cables from accidentally touching the outer casing and to prevent insulation.

[0043] The working principle of the specific device is consistent with existing technology, as follows: Power conversion circuit 1 converts the external input circuit into the input power required by controller 4. Voltage divider circuit 2 divides the input voltage through series connection of first resistor 2-1 and second resistor 2-2. AD sampling circuit 3 is connected in parallel with the second resistor 2-2 in voltage divider circuit 2. The controller controls AD sampling circuit 3 to sample the input voltage and controls the collection data to be saved to memory 6. Memory 6 can be consistent with existing technology, using FLASH memory. Controller 4 simultaneously applies a timestamp, and RTC clock 8 ensures the accuracy of the timestamp. Temperature and humidity sensor 5 is used to detect temperature and humidity information in the space environment and stores it in memory 6, also with a timestamp applied.

[0044] In addition, in this embodiment, the outer shell 7 of the device is made of aluminum alloy to protect the device from electromagnetic interference. The insulating fixing plate at the external interface of the structure is made of acrylic plate to reduce the interface risk. The two sides of the outer shell 7 are designed with a grid-like hollow design to allow air to flow inside the entire device and ensure the accuracy of the ambient temperature and humidity of the sampling environment.

Claims

1. A high-speed rail operating environment monitoring device, comprising a power conversion circuit (1), a voltage divider circuit (2), an AD sampling circuit (3), a controller (4), a temperature and humidity sensor (5), a memory (6), and a housing (7), wherein the voltage divider circuit (2), the AD sampling circuit (3), the controller (4), and the memory (6) are all located in the housing (7), and the controller (4) is connected to the AD sampling circuit (3), the temperature and humidity sensor (5), and the memory (6) respectively, characterized in that, The temperature and humidity sensor (5) is located inside the housing (7), and the housing (7) has at least two opposite sides provided with an array of ventilation holes consisting of multiple first ventilation holes (7-1). One bottom surface of the housing (7) serves as the mounting surface, and the other bottom surface is provided with multiple second ventilation holes.

2. The high-speed rail operating environment monitoring device according to claim 1, characterized in that, The first ventilation hole (7-1) is elongated, and all the first ventilation holes (7-1) are arranged in parallel.

3. The high-speed rail operating environment monitoring device according to claim 1, characterized in that, The voltage divider circuit (2) includes a first resistor (2-1) and a second resistor (2-2). One end of the first resistor (2-1) is connected to the positive terminal of the output terminal of the power conversion circuit (1), and the other end is connected to one end of the second resistor (2-2) and the input terminal of the AD sampling circuit (3). The other end of the second resistor (2-2) is connected to the negative terminal of the output terminal of the power conversion circuit (1).

4. The high-speed rail operating environment monitoring device according to claim 1, characterized in that, The outer casing (7) is a metal casing.

5. A high-speed rail operating environment monitoring device according to claim 1, characterized in that, The first ventilation hole (7-1) is inclined relative to the bottom surface of the outer casing (7).

6. A high-speed rail operating environment monitoring device according to claim 5, characterized in that, The first ventilation holes (7-1) provided on the two opposite sides of the outer casing (7) are tilted at the same angle and in the same direction.

7. A high-speed rail operating environment monitoring device according to claim 5, characterized in that, The first ventilation holes (7-1) provided on the two opposite sides of the outer shell (7) are one-to-one corresponding and the two corresponding first ventilation holes (7-1) are symmetrically arranged.

8. A high-speed rail operating environment monitoring device according to claim 1, characterized in that, The bottom surface of the outer casing (7) with a second ventilation hole is arched, and the arched protrusion faces outward.

9. A high-speed rail operating environment monitoring device according to claim 1, characterized in that, The housing (7) includes a housing body and a base plate connected by screws, the base plate serving as the mounting surface of the housing (7).

10. A high-speed rail operating environment monitoring device according to claim 1, characterized in that, An insulating fixing plate is provided on one side of the housing (7) for placing cables and insulation.

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