GPS positioning module and infrared thermal imager

Abstract

The utility model provides a kind of GPS positioning module and infrared thermal imager, GPS positioning module includes antenna (J14), impedance matching circuit (P41), power amplifier device (P42) and filter chip (LB1);Antenna (J14) is used to receive signal;Impedance matching circuit (P41) is connected with antenna (J14), impedance matching circuit (P41) is used to carry out impedance matching processing;The input of power amplifier device (P42) is connected with impedance matching circuit (P41), and power amplifier device (P42) is used to carry out power amplification processing;The output of power amplifier device (P42) is connected with the input of filter chip (LB1), and filter chip (LB1) is used to carry out filtering processing;The output of filter chip (LB1) is connected with positioning chip, and positioning chip is used to carry out positioning according to the positioning signal after filtering processing.Processing is filtered and amplified to positioning signal by power amplifier device and filter chip, can enhance positioning signal, and then make positioning more accurate.

Description

[0001] This utility model is a divisional application of the utility model patent application filed on April 23, 2025, with application number CN202520782924.5 and utility model title "Infrared Thermal Imager". Technical Field

[0002] This utility model relates to the field of infrared equipment technology, and in particular to a GPS positioning module and an infrared thermal imager. Background Technology

[0003] Existing gas concentration detection technologies mainly include infrared thermal imaging, which images gas targets based on the absorption characteristics of leaked gas along the background radiation transmission path. As a non-contact, real-time monitoring technology, it has been widely used in recent years due to its high sensitivity, rapid response, and stable operation in complex environments. Infrared thermal imagers, as the core detection equipment using this technology, play a crucial role in industrial safety, environmental monitoring, and energy facility maintenance. They can be used to accurately detect gas leaks, providing important technical support for accident prevention and ensuring production safety.

[0004] Infrared thermal imagers include a positioning module that provides precise geographic coordinates, facilitating the association of data acquired by the imager with specific address locations. However, in practical applications, weak positioning signals may lead to inaccurate positioning. Utility Model Content

[0005] In view of this, the present invention provides a GPS positioning module and an infrared thermal imager that can enhance the positioning signal.

[0006] This utility model provides a GPS positioning module, which is connected to a main control module. The positioning module includes an antenna J14, an impedance matching circuit P41, a power amplifier P42, and a filter chip LB1. The antenna J14 is used to receive signals; The impedance matching circuit P41 is connected to the antenna J14, and the impedance matching circuit P41 is used to perform impedance matching processing on the signal received by the antenna. The power amplifier P42 is connected to the impedance matching circuit P41, and the power amplifier P42 is used to amplify the signal. The power amplifier P42 is connected to the input terminal of the filter chip LB1, and the filter chip LB1 is used to filter the signal. The output terminal of the filter chip LB1 is connected to the main control module.

[0007] In one embodiment, the power amplification device P42 includes a power amplification chip U12, a first filter circuit P421, and a second filter circuit P422. The impedance matching circuit P41 is connected to the input terminal of the power amplification chip U12 through the first filter circuit P421. The output terminal of the power amplification chip U12 is connected to the input terminal of the filter chip LB1 through the second filter circuit P422.

[0008] In one embodiment, the first filter circuit P421 includes a first inductor L17 and a third resistor R126. One end of the third resistor R126 is grounded, and the other end is connected to one end of the first inductor L17. The other end of the first inductor L17 is connected to the input terminal of the power amplifier chip U12. The second filter circuit includes a fourth resistor R125 and a second inductor L18. One end of the fourth resistor R125 is connected to the output terminal of the power amplifier chip U12, and the other end is connected to one end of the second inductor L18. The other end of the second inductor L18 is grounded.

[0009] In one embodiment, the impedance matching circuit P41 includes a first capacitor C591, a second capacitor C129, and a fifth resistor R124. The two ends of the fifth resistor R124 are respectively connected to one end of the second capacitor C129 and one end of the first capacitor C591. The other end of the second capacitor C129 is grounded, and the other end of the first capacitor C591 is grounded.

[0010] In another aspect, this utility model also provides an infrared thermal imager, including a main control module, a power supply system, and a GPS positioning module as described in the above embodiments; the GPS positioning module is connected to the main control module, and the positioning module is also connected to the power supply system.

[0011] The GPS positioning module and infrared thermal imager provided by this utility model can enhance the positioning signal by filtering and amplifying the positioning signal through a power amplifier and a filter chip, thereby making the positioning more accurate. Attached Figure Description

[0012] Figure 1 A schematic diagram of the circuit principle of the positioning module provided in one embodiment of this utility model. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0014] It should be noted that all directional indicators (such as up, down, left, right, front, back, inside, outside, top, bottom, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship between the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0015] It should also be noted that when a component is referred to as "fixed to" or "set on" another component, the component may be directly on the other component or there may be an intervening component present. When a component is referred to as "connected to" another component, it may be directly connected to the other component or there may be an intervening component present.

[0016] In one embodiment of this utility model, a positioning module is provided, which may include at least one of a GPS positioning module and a BeiDou positioning module. The positioning module can provide accurate geographic coordinates.

[0017] In one embodiment, the positioning module is connected to the main control module, such as... Figure 1 As shown, the positioning module includes an antenna J14, an impedance matching circuit P41, a power amplifier P42, and a filter chip LB1.

[0018] Antenna J14 is used to receive signals.

[0019] Impedance matching circuit P41 is connected to antenna J14. Impedance matching circuit P41 is used to perform impedance matching processing on the signal received by antenna J1.

[0020] The power amplifier P42 is connected to the impedance matching circuit P41, and the power amplifier P42 is used to amplify the signal.

[0021] The power amplifier P42 is connected to the input terminal of the filter chip LB1, which is used to filter the signal.

[0022] The output of the filter chip LB1 is connected to the main control module.

[0023] In this embodiment, the positioning module uses a power amplifier and a filter chip to filter and amplify the positioning signal, thereby enhancing the positioning signal and making the positioning more accurate.

[0024] In one embodiment, the power amplification device P42 includes a power amplification chip U12, a first filter circuit P421, and a second filter circuit P422. The impedance matching circuit P41 is connected to the input terminal of the power amplification chip U12 through the first filter circuit P421. The output terminal of the power amplification chip U12 is connected to the input terminal of the filter chip LB1 through the second filter circuit P422.

[0025] The impedance matching circuit P41 includes a first capacitor C591, a second capacitor C129, and a fifth resistor R124. The two ends of the fifth resistor R124 are connected to one end of the second capacitor C129 and one end of the first capacitor C591, respectively. The other end of both the second and first capacitors is grounded. The impedance matching circuit P41 performs impedance matching on the weak signal received by the antenna, improving the sensitivity of signal reception.

[0026] The signal processed by the impedance matching circuit P41 is filtered by the first filter circuit P421 and then input to the power amplifier chip U12 for power amplification. After being filtered by the power amplifier chip U12, the signal is filtered by the second filter circuit P422 and then input to the filter chip LB1 for further filtering before being input to the positioning chip.

[0027] The first filter circuit P421 includes a first inductor L17 and a third resistor R126. One end of the third resistor R126 is grounded, and the other end is connected to one end of the first inductor L17. The other end of the first inductor L17 is connected to the input terminal of the power amplifier chip U12.

[0028] The second filter circuit includes a fourth resistor R125 and a second inductor L18. One end of the fourth resistor R125 is connected to the output terminal of the power amplifier chip U12, and the other end is connected to one end of the second inductor L18. The other end of the second inductor L18 is grounded.

[0029] The power signal input terminal of the power amplifier P42 is also equipped with a filter circuit (resistor R122 and capacitor C127 and capacitor C128 as shown in the figure) to filter out high-frequency noise in the power supply and improve the stability of the power signal.

[0030] In another aspect, this utility model also provides an infrared thermal imager, including a main control module, a power supply system, and a positioning module as described in the above embodiments. The positioning module is connected to the main control module and also to the power supply system. This positioning module enhances the reliability and stability of the infrared thermal imager's positioning capabilities.

[0031] The positioning module can provide accurate geographic coordinates, which makes it easy for the main control module to associate the data collected by the infrared thermal imager with specific address locations.

[0032] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A GPS positioning module, characterized in that, The GPS positioning module is connected to the main control module. The GPS positioning module includes an antenna (J14), an impedance matching circuit (P41), a power amplifier (P42), and a filter chip (LB1). The antenna (J14) is used to receive signals; The impedance matching circuit (P41) is connected to the antenna (J14), and the impedance matching circuit (P41) is used to perform impedance matching processing on the signal received by the antenna (J14). The power amplifier (P42) is connected to the impedance matching circuit (P41), and the power amplifier (P42) is used to amplify the signal. The power amplifier (P42) is connected to the input terminal of the filter chip (LB1), which is used to filter the signal. The output terminal of the filter chip (LB1) is connected to the main control module.

2. The GPS positioning module according to claim 1, characterized in that, The power amplifier device (P42) includes a power amplifier chip (U12), a first filter circuit (P421), and a second filter circuit (P422). The impedance matching circuit (P41) is connected to the input terminal of the power amplifier chip (U12) through the first filter circuit (P421). The output terminal of the power amplifier chip (U12) is connected to the input terminal of the filter chip (LB1) through the second filter circuit (P422).

3. The GPS positioning module according to claim 2, characterized in that, The first filter circuit (P421) includes a first inductor (L17) and a third resistor (R126). One end of the third resistor (R126) is grounded, and the other end is connected to one end of the first inductor (L17). The other end of the first inductor (L17) is connected to the input terminal of the power amplifier chip (U12). The second filter circuit includes a fourth resistor (R125) and a second inductor (L18). One end of the fourth resistor (R125) is connected to the output terminal of the power amplifier chip (U12), and the other end is connected to one end of the second inductor (L18). The other end of the second inductor (L18) is grounded.

4. The GPS positioning module according to claim 1, characterized in that, The impedance matching circuit (P41) includes a first capacitor (C591), a second capacitor (C129), and a fifth resistor (R124). The two ends of the fifth resistor (R124) are respectively connected to one end of the second capacitor (C129) and one end of the first capacitor (C591). The other end of the second capacitor (C129) is grounded, and the other end of the first capacitor (C591) is grounded.

5. An infrared thermal imager, characterized in that, It includes a main control module, a power supply system, and a GPS positioning module as described in any one of claims 1 to 4; the GPS positioning module is connected to the main control module.

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