Power supply circuit of personnel positioning system

Abstract

The utility model discloses a power supply circuit of a personnel positioning system, and belongs to the related technical field of chemical plant personnel positioning. The system comprises a power supply module, a host connected with the power supply module, a router connected with the host, a POE communication module connected with the router, a positioning substation and a personnel positioning card which are connected with the POE communication module, and a base station connected with the POE communication module by adopting an RSSI (Received Signal Strength Indicator) positioning technology, the power supply module is connected with an Ethernet cable through the POE communication module, efficient and reliable power supply is achieved, meanwhile, installation and maintenance work is simplified, and the power supply module is particularly suitable for being used in complex environments such as chemical plants.

Description

Technical Field

[0001] The utility model relates to the technical field of personnel positioning in chemical plants, and particularly relates to a power supply circuit for a personnel positioning system. Background Art

[0002] Chemical plants usually need to monitor the positions of equipment and personnel in real time to ensure the safety and efficiency of the production process. However, there are many problems in the installation and maintenance of existing positioning systems. For example, traditional systems may require complex wiring and power configuration, which is particularly difficult in the harsh environment of chemical plants (such as high temperature, corrosive gases, etc.). In addition, existing systems may lack sufficient flexibility and reliability, making it difficult to meet the requirements of chemical plants for high efficiency and safety positioning.

[0003] When using a battery to power the positioning base station, the battery needs to be checked and replaced regularly, which may increase the maintenance cost and workload. Especially in the dangerous areas of chemical plants, the replacement takes a lot of time. Moreover, the service life of the battery is limited and may be shortened due to environmental factors (such as high temperature or low temperature), affecting the continuous operation of the equipment. The battery capacity may limit the working time of the equipment, and backup batteries or regular charging are required, which is more dependent on maintenance and management.

[0004] When using a DC power supply to power the positioning base station, the DC power supply needs to arrange power cables separately, which may increase the complexity and cost of installation, especially in areas where it is difficult to access the power supply. Moreover, it is necessary to ensure the compatibility of the power adapter with the equipment, and the adapter itself may also have a risk of failure. The adapter of the DC power supply may require protective measures to adapt to the harsh environment such as high temperature and humidity in chemical plants, resulting in a high power supply cost for the system. Summary of the Utility Model

[0005] The utility model provides a power supply circuit for a personnel positioning system, aiming to solve the above technical defects.

[0006] The specific technical solution provided by the utility model is as follows:

[0007] A power supply circuit for a personnel positioning system provided by the utility model includes a power supply module, a host connected to the power supply module, a router connected to the host, a POE communication module connected to the router, a positioning sub-station and a personnel positioning card connected to the POE communication module, and a base station connected to the POE communication module using RSSI positioning technology. Among them, the power supply module is connected to an Ethernet cable using the POE communication module.

[0008] Optionally, the power supply module includes a power supply equipment PSE sub-module and a powered device PD module. Among them, four signal pins are used to connect between the power supply equipment PSE sub-module and the powered device PD module.

[0009] Optionally, a first transformer circuit is provided in the power supply equipment PSE sub-module. The transformer circuit is used to isolate and process signal transmission in a network interface card or a switch.

[0010] Optionally, the powered device PD module includes a second transformer circuit, a rectifier bridge circuit, and a POE Ethernet power supply module. Among them, the rectifier bridge circuit converts an AC signal into a DC signal.

[0011] The utility model has the following beneficial technical effects:

[0012] An embodiment of the utility model provides a power supply circuit for a personnel positioning system, which includes a power supply module, a host connected to the power supply module, a router connected to the host, a POE communication module connected to the router, a positioning sub-station and a personnel positioning card connected to the POE communication module, and a base station connected to the POE communication module using RSSI positioning technology. Among them, the power supply module is connected to an Ethernet cable using the POE communication module, realizing efficient and reliable power supply, while simplifying installation and maintenance work, and is particularly suitable for use in complex environments such as chemical plants. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 It is a schematic structural diagram of a power supply circuit for a personnel positioning system according to an embodiment of the utility model;

[0015] Figure 2 It is a schematic structural diagram of a power supply circuit for a personnel positioning system according to an embodiment of the utility model. Detailed Embodiments

[0016] In order to make the purpose, technical solutions, and advantages of the utility model clearer, the following will further describe the utility model in detail with reference to the drawings. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the utility model.

[0017] The following will combine Figures 1 to 2 to provide a detailed description of a power supply circuit for a personnel positioning system according to an embodiment of the present utility model.

[0018] Referring to Figures 1 to 2 As shown, a power supply circuit for a personnel positioning system provided by an embodiment of the present utility model includes a power supply module 1, a host 2 connected to the power supply module 1, a router 3 connected to the host 2, a POE communication module 4 connected to the router 3, a positioning sub-station 5 and a personnel positioning card 6 connected to the POE communication module 4, and a base station 7 connected to the POE communication module 4 using RSSI positioning technology. Among them, the power supply module 1 is connected to an Ethernet cable using the POE communication module 4.

[0019] Referring to Figure 1 and Figure 2 As shown, the power supply module 1 provided by an embodiment of the present utility model is powered using Ethernet power supply technology. Ethernet power supply technology can provide power to devices through network cables, avoiding additional power wiring. POE power supply technology can simplify wiring and improve the stability of the system in a chemical plant environment, support a cable length of up to 100 meters, and adapt to different installation requirements. The base station 7 processes and forwards the received location information and transmits the data to the central control system through a ZigBee network. The RSSI value has a certain relationship with the distance from the signal source to the receiver. Usually, the signal strength weakens as the distance increases. By using a specific mathematical model or empirical formula, the RSSI value can be converted into a distance estimate value, and multiple base stations can achieve higher-precision positioning by receiving the RSSI values of the same signal source.

[0020] Referring to Figure 1 and Figure 2 As shown, the POE communication module 4 provided by an embodiment of the present utility model is provided with an antenna for improving its wireless communication quality and ensuring signal stability. The power supply module 1 includes a power supply equipment PSE sub-module 101 and a powered device PD module 102. Among them, the power supply equipment PSE sub-module 101 and the powered device PD module 102 are connected using four signal pins. The power supply equipment PSE sub-module 101 is a terminal sub-module that provides power. Usually, it is a POE switch or a POE injector, which sends power and data into the Ethernet cable together. For example, a first transformer circuit (TX and RX) is provided in the power supply equipment PSE sub-module 101, and the transformer circuit is used to isolate and process signal transmission in a network interface card or switch. The power supply equipment PSE sub-module 101 can ensure that the electrical signals between devices can be transmitted without interference and provide electrical isolation to protect the devices from the influence of power fluctuations or interference.

[0021] Referring to Figure 1 andFigure 2 As shown in Figure 2 , the power receiving device PD module 102 provided by the embodiment of the present utility model includes a second transformer circuit (TX and RX), a rectifier bridge circuit, and a POE Ethernet power supply module. Among them, the rectifier bridge circuit converts an AC signal into a DC signal. The role of the rectifier bridge circuit is to convert the signal into a consistent DC output, so that the subsequent circuit can use a stable power supply. The rectifier bridge circuit can also provide electrical isolation and protection, which can help protect the device from power fluctuations or reverse current, and avoid damage to the device caused by incorrect wiring or unstable power supply. The power receiving device PD module 102 is a device at one end that receives power and data, such as an IP camera, a wireless access point, etc. The power receiving device PD module 102 obtains power from the Ethernet cable and simultaneously receives and sends data. When a POE device is connected to a PSE, the VIN+ and VIN- pins are responsible for detecting and indicating power input. The device then provides a stable DC voltage output through the +VDC and -VDC pins to meet the needs of specific devices.

[0022] The embodiment of the present utility model provides a power supply circuit for a personnel positioning system, which includes a power supply module, a host connected to the power supply module, a router connected to the host, a POE communication module connected to the router, a positioning sub-station and a personnel positioning card connected to the POE communication module, and a base station connected to the POE communication module using RSSI positioning technology. Among them, the power supply module is connected to an Ethernet cable using the POE communication module to achieve efficient and reliable power supply, while simplifying the installation and maintenance work, and is particularly suitable for use in complex environments such as chemical plants.

[0023] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present utility model without departing from the spirit and scope of the embodiments of the present utility model. Thus, if these modifications and variations of the embodiments of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these changes and modifications.

Claims

1. A power supply circuit for a personnel positioning system, characterized in that, The power supply circuit of the personnel positioning system includes a power supply module, a host connected to the power supply module, a router connected to the host, a POE communication module connected to the router, a positioning sub-station and a personnel positioning card connected to the POE communication module, and a base station connected to the POE communication module using RSSI positioning technology. Among them, the power supply module is connected to an Ethernet cable using the POE communication module.

2. The power supply circuit of the personnel positioning system according to claim 1, characterized in that The power supply module includes a power supply equipment PSE sub-module and a powered device PD module. Among them, the power supply equipment PSE sub-module and the powered device PD module are connected by four signal pins.

3. The power supply circuit of the personnel positioning system according to claim 2, characterized in that A first transformer circuit is provided in the power supply equipment PSE sub-module, and the transformer circuit is used to isolate and process signal transmission in a network interface card or a switch.

4. The power supply circuit of the personnel positioning system according to claim 2, characterized in that, The powered device PD module includes a second transformer circuit, a rectifier bridge circuit, and a POE Ethernet power supply module. Among them, the rectifier bridge circuit converts an AC signal into a DC signal.

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