Wireless pressure sensor

Abstract

The utility model belongs to the technical field of equipment, and particularly relates to a wireless pressure sensor which comprises a cylinder pressure detection module and a receiving module. The cylinder pressure detection module is connected with a target brake cylinder and is in communication connection with the receiving module; and the receiving module is connected with the target data acquisition box. The utility model relates to the field of pressure detection. According to the utility model, the cylinder pressure detection module is in communication connection with the receiving module, so that the real-time pressure of the target brake cylinder can be obtained at a long distance, the distance limitation for obtaining the real-time pressure of the target brake cylinder is reduced, and the obtaining difficulty is also reduced.

Description

Technical Field

[0001] The utility model belongs to the field of pressure detection, in particular to a wireless pressure sensor. Background Art

[0002] The train brake cylinder is an important part of the train braking system, used to realize the braking function of the train. The train braking system is usually divided into two types: air brake system and hydraulic brake system, and the brake cylinder is one of the indispensable components in these systems. It ensures that the train can implement braking operations in a timely and accurate manner, ensuring the safety of the train and passengers. Different types of train braking systems may use different types of brake cylinders. The basic principle of the brake cylinder is to convert the input signal into mechanical movement to achieve the braking of the train.

[0003] The reasons for detecting the pressure of the brake cylinder include: by detecting the pressure of the brake cylinder, it can be understood whether the braking system can generate enough force to achieve effective braking operation. If the pressure of the brake cylinder is too low, it may lead to poor braking effect and failure to stop the car in time; while too high a pressure may cause the brake to be over-strained and damaged; by monitoring the pressure changes of the brake cylinder, abnormal conditions in the braking system, such as pressure leaks, failures or intentional interference, can be discovered in time, so that corresponding repair measures can be taken to ensure the normal operation of the braking system. Therefore, detecting the pressure of the brake cylinder is one of the key steps to ensure the normal operation, safe parking and maintenance of the train braking system. At present, obtaining the pressure of the brake cylinder is a direct measurement with a low degree of automation. In view of this, the present application proposes a wireless pressure sensor. Utility Model Content

[0004] In view of the technical problems existing in the background technology, the utility model provides a wireless pressure sensor, which has a simple structure, is convenient to assemble and disassemble, and is easy to operate.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0006] A wireless pressure sensor, comprising: a cylinder pressure detection module and a receiving module;

[0007] The cylinder pressure detection module is connected to the target brake cylinder, and the cylinder pressure detection module is in communication connection with the receiving module;

[0008] The receiving module is connected to the target data acquisition box.

[0009] Further, including:

[0010] The receiving module is connected to the target data acquisition box based on the USB interface of the target data acquisition box.

[0011] Further, including:

[0012] The cylinder pressure detection module includes a power control submodule, a wireless communication submodule, a pressure display submodule and a pressure transmitter submodule;

[0013] The power control submodule is connected to the wireless communication submodule;

[0014] The wireless communication submodule is connected to the pressure display submodule;

[0015] The pressure display submodule is connected to the pressure transmitter submodule.

[0016] Further, including:

[0017] Based on the wireless communication submodule, the cylinder pressure detection module is connected to the receiving module for communication.

[0018] Further, including:

[0019] Based on the air path interface of the pressure transmitter module, the target brake cylinder is connected to the pressure transmitter module.

[0020] Further, including:

[0021] The target brake cylinder and the air circuit interface are connected by an air pipe.

[0022] Further, including:

[0023] The power control submodule also includes a battery unit, a power switch unit, a charging unit and a power display unit;

[0024] The power switch unit is connected to the positive electrode of the battery unit;

[0025] One end of the power display unit is connected to the positive electrode of the battery unit, and the other end of the power display unit is connected to the negative electrode of the battery unit;

[0026] One end of the charging unit is connected to the positive electrode of the battery unit, and the other end of the charging unit is connected to the negative electrode of the battery unit.

[0027] Further, including:

[0028] The wireless communication submodule uses the LoRaWAN protocol for communication.

[0029] The utility model has the following advantages and beneficial effects:

[0030] The utility model can relatively easily obtain the real-time pressure of the target brake cylinder by connecting the cylinder pressure detection module with the target brake cylinder.

[0031] The utility model can obtain the real-time pressure of the target brake cylinder at a long distance by making the cylinder pressure detection module communicate with the receiving module, thereby reducing the difficulty of obtaining and having a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of a wireless pressure sensor provided in this application;

[0033] Figure 2 A structural schematic diagram of a cylinder pressure detection module provided in this application.

[0034] Reference numerals

[0035] Cylinder pressure detection module-1, receiving module-2, power control submodule-11, wireless communication submodule-12, pressure display submodule-13, pressure transmitter submodule-14, battery unit-111, power switch unit-112, charging unit-113, power display unit-114. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0038] Example

[0039] This application provides Figure 1 A wireless pressure sensor shown includes: a cylinder pressure detection module 1 and a receiving module 2;

[0040]

Cylinder pressure detection module 1

[0041] The cylinder pressure detection module 1 is connected to the target brake cylinder, and the cylinder pressure detection module 1 is communicatively connected to the receiving module 2 .

[0042] The brake cylinder is an important part of the train braking system. It is used to convert pedal force into braking force and transfer hydraulic energy to the brake to achieve vehicle braking. The brake cylinder can include: master cylinder and slave cylinder (or wheel cylinder). The master cylinder and slave cylinder are responsible for the braking operation of the front and rear wheels respectively. The target brake cylinder is the brake cylinder whose pressure is to be tested.

[0043] like Figure 2As shown, the cylinder pressure detection module 1 includes a power control submodule 11 , a wireless communication submodule 12 , a pressure display submodule 13 and a pressure transmitter submodule 14 .

[0044] like Figure 2 As shown, the pressure transmitter module 14 is connected to the pressure display submodule 13. The pressure transmitter module 14 can be a pressure transmitter. The pressure transmitter is a device for measuring, converting and transmitting pressure signals, including: the pressure transmitter can measure the pressure in various industrial processes and convert the pressure signal into a standard signal output; the pressure transmitter can convert the measured pressure signal into a standard current signal (such as 4-20mA) or a voltage signal (such as 0-10V) for subsequent transmission and processing. The pressure transmitter can monitor, control and display the pressure parameters by transmitting the converted electrical signal to the processor (in this application, the converted electrical signal is transmitted to the processor of the pressure display submodule 13).

[0045] The target brake cylinder is connected to the pressure transmitter module 14 based on the air circuit interface of the pressure transmitter module 14. The target brake cylinder and the air circuit interface are connected by an air pipe. The pressure transmitter module 14 obtains the pressure in the target brake cylinder through the air pipe and converts it into a current signal or a voltage signal. The pressure transmitter can include two types of air circuit interfaces: a static pressure interface and a dynamic pressure interface.

[0046] Static pressure interface: used to connect the static pressure of the medium to be measured. The static pressure interface is usually an opening that allows the medium to enter the pressure transmitter so that it can sense the static pressure of the medium. The static pressure interface allows the sensor to sense the static pressure level of the medium, thereby measuring the pressure state of the medium.

[0047] Dynamic pressure interface: used to connect the dynamic pressure of the medium to be measured. The dynamic pressure interface usually uses a pipe or conduit to guide the medium to flow through the sensor so that it can sense the dynamic pressure changes of the medium. The dynamic pressure interface is usually used to measure fluid flow rate, flow rate or other applications that require monitoring dynamic pressure.

[0048] like Figure 2 As shown, the pressure display submodule 13 is connected to the pressure transmitter submodule 14. The pressure display submodule 13 can convert the received current signal or voltage signal into a pressure value and display it.

[0049] The pressure display submodule 13 is also connected to the wireless communication submodule 12 , and the pressure display submodule 13 transmits the received current signal or voltage signal to the wireless communication submodule 12 .

[0050] like Figure 2 As shown, the wireless communication submodule 12 is connected to the power control submodule 11 , and the wireless communication submodule 12 is connected to the pressure display submodule 13 .

[0051] The power control submodule 11 provides power to the wireless communication submodule 12 (eg Figure 2 As shown, when the power switch unit 112 is turned on, the power control submodule 11 forms a path with the wireless communication submodule 12, the pressure display submodule 13 and the pressure transmitter submodule 14, and also provides power for the entire cylinder pressure detection module 1). The wireless communication submodule 12 converts the received current signal or voltage signal into an electromagnetic wave signal and transmits it to the receiving module 2.

[0052] The wireless communication submodule 12 may be a LORA module, which is a low-power, long-distance wireless communication module that can be used in Internet of Things applications and remote monitoring systems. The LoRa module uses LoRa modulation technology and can achieve communication over several kilometers or even tens of kilometers.

[0053] The advantages of using LoRa modules are: LoRa modules have a long communication distance and can achieve a communication coverage range of several kilometers to tens of kilometers in open areas. LoRa modules can be used for low-power applications. LoRa modules can extend battery life through low-power mode and are suitable for scenarios such as long-term wireless sensor networks. LoRa modules can support large-scale node connections and can achieve many-to-many communication methods. They are suitable for scenarios that require connecting a large number of terminal devices. LoRa modules use spread spectrum modulation technology, have strong anti-interference capabilities, and can communicate stably in complex wireless environments.

[0054] The wireless communication submodule 12 uses the LoRaWAN protocol for communication, and its advantages are: the LoRaWAN protocol uses low-power, long-distance modulation technology, which is very effective for medium and long-distance data transmission. The LoRaWAN communication module consumes very low energy when sending data, so it is suitable for application scenarios that require long-term operation and difficult to replace batteries. LoRaWAN technology has excellent penetration ability and can penetrate buildings and obstacles, thereby providing reliable communication connections in urban environments. LoRaWAN supports star, mesh and hybrid topologies, and can select appropriate network structures according to the needs of different application scenarios, with high flexibility. The deployment and maintenance costs of the LoRaWAN communication module are relatively low. In addition, the LoRaWAN protocol also supports functions such as broadcast and multicast, which can effectively reduce network traffic and reduce communication costs.

[0055] like Figure 2 As shown, the power control submodule 11 is connected to the wireless communication submodule 12. The power control submodule 11 also includes a battery unit 111, a power switch unit 112, a charging unit 113 and a power display unit 114. The power control submodule 11 is used to provide power to the cylinder pressure detection module 1.

[0056] The power switch unit 112 is connected to the positive electrode of the battery unit 111. When the power switch unit 112 is turned on, the battery unit 111 and the wireless communication submodule 12 form a path; when the power switch unit 112 is turned off, the battery unit 111 and the wireless communication submodule 12 are disconnected ( Figure 2 The positive and negative poles are indicated by "+" and "-").

[0057] One end of the power display unit 114 is connected to the positive electrode of the battery cell 111, and the other end of the power display unit 114 is connected to the negative electrode of the battery cell 111. The power display unit 114 can obtain the power in the battery cell 111 by connecting to the positive and negative electrodes of the battery cell 111 respectively, and display it on the display screen of the power display unit 114.

[0058] One end of the charging unit 113 is connected to the positive electrode of the battery cell 111, and the other end of the charging unit 113 is connected to the negative electrode of the battery cell 111. The charging unit 113 can charge the battery cell 111 by being connected to the positive and negative electrodes of the battery cell 111 respectively.

[0059] The battery unit 111 may be a storage battery, and the type of the storage battery may be a lead-acid storage battery, a lithium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lithium polymer battery, etc.

[0060] The advantage of using lead-acid batteries is that lead-acid batteries have a wide range of application scenarios. The advantage of using lithium-ion batteries is that lithium-ion batteries have the advantages of high energy density and long life. Lithium-ion batteries are widely used in mobile phones, laptops, power tools, electric vehicles and other devices. The advantage of using nickel-metal hydride batteries is that nickel-metal hydride batteries are environmentally friendly batteries with high cycle life and low self-discharge rate. Nickel-metal hydride batteries are widely used in digital cameras, remote controls, electric toys and other devices. The advantage of using nickel-cadmium batteries is that nickel-cadmium batteries have high charge and discharge efficiency and cycle life, and can be used in special environments such as emergency lighting, avionics equipment, etc. The advantage of using lithium polymer batteries is that lithium polymer batteries are thin lithium-ion batteries with high energy density and low self-discharge rate. Lithium polymer batteries are commonly used in tablets, drones, mobile power supplies and other devices. The choice of battery type can be determined according to actual conditions and is not restricted here.

[0061]

Receiver Module 2

[0062] like Figure 1 As shown, the receiving module 2 is connected to the cylinder pressure detection module 1. The receiving module 2 is also connected to the target data acquisition box. The receiving module 2 can be a receiver.

[0063] Furthermore, the receiving module 2 is connected to the wireless communication submodule 12 in the cylinder pressure detection module 1, and the receiving module 2 receives the electromagnetic wave signal sent by the wireless communication submodule 12. The current signal or voltage signal sent by the wireless communication submodule 12 is transmitted to the target data acquisition box through the USB interface of the target data acquisition box.

[0064] The target data acquisition box can transmit the acquired current signal or voltage signal to the terminal for storage or display. The specific form of the data acquisition box can be a computer host or other, etc., which is not limited here. The specific form of the terminal can be a mobile phone, a computer or a smart wearable device.

[0065] The following is an explanation of the use of the wireless pressure sensor:

[0066] Step 1: Connect the USB interface of the header box to connect the receiving module 2 to the target data acquisition box.

[0067] Step 2: Turn on the power control submodule 11 in the cylinder pressure detection module 1, and check whether the power display unit 114 and the pressure display submodule 13 display normally.

[0068] Step 3: After confirmation, connect the cylinder pressure detection module 1 and the target brake cylinder using an air pipe.

[0069] Step 4: Obtain the pressure value in the target brake cylinder, and display the pressure value in the target brake cylinder on the terminal or the pressure display submodule 13 .

[0070] In summary, the present application provides a wireless pressure sensor including: a cylinder pressure detection module and a receiving module; the cylinder pressure detection module is connected to the target brake cylinder, and the cylinder pressure detection module is connected to the receiving module for communication; the receiving module is connected to the target data acquisition box. By connecting the cylinder pressure detection module to the target brake cylinder, the real-time pressure of the target brake cylinder can be obtained more easily, and by connecting the cylinder pressure detection module to the receiving module for communication, the real-time pressure of the target brake cylinder can be obtained at a long distance, which reduces the difficulty of acquisition and improves the degree of automation of acquisition.

[0071] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wireless pressure sensor, characterized in that: Including: cylinder pressure detection module and receiving module; The cylinder pressure detection module is connected to the target brake cylinder, and the cylinder pressure detection module is communicatively connected to the receiving module; The receiving module is connected to the target data acquisition box; include: The receiving module is connected to the target data acquisition box based on the USB interface of the target data acquisition box; include: The cylinder pressure detection module includes a power control submodule, a wireless communication submodule, a pressure display submodule and a pressure transmitter submodule; The power control submodule is connected to the wireless communication submodule; The wireless communication submodule is connected to the pressure display submodule; The pressure display submodule is connected to the pressure transmitter submodule.

2. A wireless pressure sensor according to claim 1, characterized in that: include: Based on the wireless communication submodule, the cylinder pressure detection module is communicatively connected with the receiving module.

3. A wireless pressure sensor according to claim 1, characterized in that: include: Based on the air circuit interface of the pressure transmitter module, the target brake cylinder is connected to the pressure transmitter module.

4. A wireless pressure sensor according to claim 3, characterized in that: include: The target brake cylinder and the air circuit interface are connected by an air pipe.

5. The wireless pressure sensor according to claim 1, characterized in that: include: The power control submodule also includes a battery unit, a power switch unit, a charging unit and a power display unit; The power switch unit is connected to the positive electrode of the battery unit; One end of the power display unit is connected to the positive electrode of the battery unit, and the other end of the power display unit is connected to the negative electrode of the battery unit; One end of the charging unit is connected to the positive electrode of the battery unit, and the other end of the charging unit is connected to the negative electrode of the battery unit.

6. The wireless pressure sensor according to claim 1, characterized in that: include: The wireless communication submodule uses the LoRaWAN protocol for communication.

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