Infrared detection camera capable of adaptively adjusting induction sensitivity

Abstract

The utility model discloses an infrared detection camera capable of adaptively adjusting induction sensitivity, which comprises an infrared sensor, a communication module, a battery management module and a control module, and is characterized in that the communication module receives a real-time environment temperature signal provided by external equipment; the battery management module comprises a temperature sampling unit for measuring a battery temperature signal; the control module comprises a mean value calculation unit and a temperature comparison unit, the input end of the mean value calculation unit is respectively connected with the communication module and the temperature sampling unit, and the output end of the mean value calculation unit is connected with the input end of the temperature comparison unit, so that the temperature comparison unit sends a mean value result of the real-time environment temperature signal and the battery temperature signal to the communication module; and the temperature is compared with the preset object temperature to obtain a temperature comparison result for adjusting the sensing sensitivity of the infrared sensor, so that the control module adjusts the sensing sensitivity of the infrared sensor according to the temperature comparison result, the adjustment accuracy of the sensing sensitivity of the camera is improved, and the sensing accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of camera equipment technology, and in particular to an infrared detection camera with adaptive sensitivity adjustment. Background Technology

[0002] Current security cameras typically employ passive infrared sensors (PIR). The thermal radiation emitted by the human body is received by the passive infrared sensor and converted into corresponding electrical charge output to detect human movement. When no one is present, the camera enters sleep mode and activates when someone enters the detection range, achieving low-power operation. However, the detection accuracy of these cameras is easily affected by ambient temperature. When the ambient temperature rises to near the normal human body temperature of 37°C, the pyroelectric effect released by the human body is relatively weak due to the close proximity of the ambient and human body temperatures. Therefore, the PIR sensitivity of cameras using this technology can be adjusted according to the ambient temperature, increasing sensitivity in high temperatures and decreasing sensitivity in low temperatures. However, relying solely on ambient temperature may not fully reflect the actual operating conditions of the camera, easily leading to frequent false triggers and low sensing accuracy. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an infrared detection camera with adaptive sensitivity adjustment, which can improve the accuracy of the camera's sensitivity adjustment and improve the low sensing accuracy.

[0004] In a first aspect, this utility model provides an infrared detection camera with adaptive sensitivity adjustment, including an infrared sensor, a communication module, a battery management module, and a control module. The communication module receives real-time ambient temperature signals from external devices. The battery management module includes a temperature sampling unit for measuring battery temperature signals. The control module is connected to the infrared sensor and includes a mean calculation unit for calculating the average value of input data and a temperature comparison unit for comparing the magnitudes of input data. The input terminal of the mean calculation unit is connected to both the communication module and the temperature sampling unit, and the output terminal of the mean calculation unit is connected to the input terminal of the temperature comparison unit. This allows the temperature comparison unit to compare the average value of the real-time ambient temperature signal and the battery temperature signal with a preset object temperature to obtain a temperature comparison result for adjusting the sensitivity of the infrared sensor. This enables the control module to adjust the sensitivity of the infrared sensor based on the temperature comparison result.

[0005] The infrared detection camera provided according to the embodiments of this utility model has at least the following beneficial effects: Utilizing the communication module's function of communicating with external systems, it receives the real-time ambient temperature signal of the environment where the infrared detection camera is located. The battery temperature is sampled by the temperature sampling unit in the battery management module to obtain a battery temperature signal, which reflects the current working status of the camera. Then, the average calculation unit averages the real-time ambient temperature signal and the battery temperature signal, and the temperature comparison unit compares the average result with a preset object temperature to adjust the sensitivity of the infrared sensor. Compared to related technologies that rely solely on ambient temperature to adjust sensitivity, this utility model embodiment additionally introduces battery temperature. Combining the average result of the real-time ambient temperature and the battery temperature more accurately reflects the actual working conditions of the infrared detection camera. By using the average calculation unit and the temperature comparison unit to comprehensively adjust the sensitivity based on both real-time ambient temperature and battery temperature, more accurate adjustments can be made under different temperature conditions, improving the sensing accuracy of the infrared detection camera while optimizing power consumption management.

[0006] In the infrared detection camera provided in this embodiment of the present invention, when the value of the average result is greater than the value of the preset object temperature, the temperature comparison result output by the temperature comparison unit is a first adjustment signal for improving the sensing sensitivity of the infrared sensor.

[0007] In the infrared detection camera provided in this embodiment of the present invention, when the value of the average result is less than or equal to the value of the preset object temperature, the temperature comparison result output by the temperature comparison unit is a second adjustment signal for reducing the sensing sensitivity of the infrared sensor.

[0008] In the infrared detection camera provided in this embodiment of the present invention, when the output result of the first comparison unit is that the difference between the value of the battery temperature signal and the value of the real-time ambient temperature signal is less than or equal to a preset temperature difference threshold, the output terminal of the first comparison unit is connected to the average value calculation unit so that the preset object temperature and the average value output by the average value calculation unit are input to the input terminal of the temperature comparison unit.

[0009] In the infrared detection camera provided in this embodiment of the present invention, when the output result of the first comparison unit is that the difference between the value of the battery temperature signal and the value of the real-time ambient temperature signal is greater than a preset temperature difference threshold, the input terminal of the temperature comparison unit is connected to the communication module so that the real-time ambient temperature signal is input to the input terminal of the temperature comparison unit.

[0010] In the infrared detection camera provided in this embodiment of the present invention, when the value of the real-time ambient temperature signal is greater than the value of the preset object temperature, the temperature comparison result output by the temperature comparison unit is a first adjustment signal for improving the sensing sensitivity of the infrared sensor.

[0011] In the infrared detection camera provided in this embodiment of the present invention, when the value of the real-time ambient temperature signal is less than or equal to the value of the preset object temperature, the temperature comparison result output by the temperature comparison unit is a second adjustment signal for reducing the sensing sensitivity of the infrared sensor.

[0012] In the infrared detection camera provided in this embodiment of the present invention, the control module further includes a signal receiving terminal connected to the communication module to receive a sensitivity signal for adjusting the sensing sensitivity of the infrared sensor.

[0013] In the infrared detection camera provided in this embodiment of the present invention, the battery management module further includes a battery and a thermistor connected to the battery, and the temperature sampling unit is connected to the thermistor.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the structure of the infrared detection camera with adaptive sensitivity adjustment provided in this embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the sensing sensitivity adjustment principle provided by this utility model;

[0019] Figure 3 This is a schematic diagram illustrating the detailed principle of the sensing sensitivity adjustment provided by this utility model;

[0020] Figure 4 This is a schematic diagram illustrating the detailed principle of the sensing sensitivity adjustment under different working conditions provided by this utility model. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the number itself, while "above," "below," "within," etc. are understood to include the number itself. "Any one" refers to one or more, and "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or multiple items. If the terms "first" and "second" are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] It should be noted that the terms "setting," "installing," and "connecting" in the embodiments of this utility model should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of this utility model in conjunction with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it can be a direct connection or an indirect connection through an intermediate medium.

[0024] It should be noted that the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Current PIR cameras enter sleep mode when no one is around and activate when someone enters the detection range to reduce power consumption. However, the detection accuracy of these cameras is easily affected by ambient temperature. When the ambient temperature rises to around 37°C, which is close to the normal human body temperature, the pyroelectric effect released by the human body is relatively weak. Therefore, the PIR sensitivity of cameras in this technology can be adjusted according to the ambient temperature, increasing the PIR sensitivity in high temperatures and decreasing it in low temperatures. However, relying solely on ambient temperature may not fully reflect the actual working conditions of the camera, and frequent false triggering and low sensing accuracy may still occur.

[0026] Based on this, this utility model proposes an infrared detection camera with adaptive sensitivity adjustment. Utilizing the communication module's external communication function, it receives the real-time ambient temperature signal of the environment where the infrared detection camera is located. The battery temperature is sampled by the temperature sampling unit in the battery management module to obtain a battery temperature signal, which reflects the current working status of the camera. Then, the average calculation unit averages the real-time ambient temperature signal and the battery temperature signal, and the temperature comparison unit compares the average result with a preset object temperature to adjust the sensitivity of the infrared sensor.

[0027] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0028] Reference Figure 1 The first aspect of this utility model provides an infrared detection camera with adaptive sensitivity adjustment. The infrared detection camera includes an infrared sensor, a communication module, a battery management module, and a control module. The infrared sensor can refer to a passive sensor used to detect human movement. It can detect changes in infrared radiation in the environment. When an object moves from one area to another, it causes a change in infrared radiation, which can then be detected by the infrared sensor. The sensitivity of the infrared sensor refers to the minimum threshold for detecting changes in infrared radiation. Higher sensitivity means that it can detect smaller changes in infrared radiation. Specifically, the sensitivity can be increased by adjusting the circuit gain in the infrared sensor or lowering the trigger threshold. Increasing the sensitivity allows the infrared sensor to detect changes in infrared radiation over a wider range, but it is prone to false triggering due to factors such as changes in ambient temperature and light fluctuations.

[0029] The communication module may include a communication chip, antenna, communication microcontroller, and memory. The communication chip can be a Wi-Fi chip or a Bluetooth module. The communication module can connect to a wireless network through the communication chip and transmit data through the antenna. The communication microcontroller connects to the control module and has the functions of managing communication protocols and processing data. The memory of the communication module can store configuration settings, API keys, or temporary buffer data. Therefore, the communication module can interact with external devices, not only to acquire real-time ambient temperature signals but also to upload videos captured by the infrared detection camera. Specifically, the communication module can establish a network connection and access the API interface provided by the weather temperature query service via HTTP requests. It can then parse the response and receive the real-time ambient temperature signal pushed to the communication module by the weather service through the API interface. The real-time ambient temperature signal represents the ambient temperature of the area where the infrared detection camera is located at the current moment. Alternatively, the communication module can connect to a smart device with wireless network connectivity. The smart device can receive and store the real-time ambient temperature data and send the real-time ambient temperature signal to the communication module via the wireless network. Or, the communication module can connect to a temperature sensor with wireless network connectivity. The temperature sensor can measure the real-time ambient temperature signal and transmit it to the communication module. It is worth noting that the communication module can also upload the captured video files to the server via a communication protocol.

[0030] The battery management module manages the power supply of the infrared detection camera, ensuring its proper operation. The module includes a battery and a temperature sampling unit. The temperature sampling unit comprises a thermistor connected to the battery, which monitors the battery temperature in real time, generating a battery temperature signal. This signal reflects the camera's current operating status. For example, frequent camera activation and discharging raises the battery temperature, while prolonged low-power standby mode results in a lower temperature. The battery management module protects the battery by disconnecting charging and discharging when the temperature becomes too high.

[0031] Understandably, the control module is the core component of the infrared detection camera, used to receive and process various signals. The processed signals can be used to adjust the sensitivity of the infrared sensor. The control module includes an average calculation unit and a temperature comparison unit. The average calculation unit can calculate the average value of each signal input to it. Specifically, the input terminals of the average calculation unit are connected to the communication module and the temperature sampling unit, respectively, and can receive the real-time ambient temperature signal from the communication module and the battery temperature signal from the temperature sampling unit, i.e., calculate the average value of the real-time ambient temperature signal and the battery temperature signal. The temperature comparison unit can compare the values ​​of the two signals input to it and output the temperature comparison result. The temperature comparison result is used to adjust the sensitivity of the infrared sensor. For example, the comparison result output by the temperature comparison unit can be an adjustment signal for adjusting the sensitivity of the infrared sensor; the temperature comparison result output by the temperature comparison unit can be a high-level signal indicating that the value of one input signal is higher than the value of another input signal, and this high-level signal is the adjustment signal used to increase the sensitivity of the infrared sensor; the temperature comparison result output by the temperature comparison unit can also be a high-level signal indicating that the value of one input signal is lower than the value of another input signal. The low-level signal is used to adjust the sensitivity of the infrared sensor. In other words, the temperature comparison result output by the temperature comparison unit is used as the adjustment signal to adjust the sensitivity of the infrared sensor. Since the input data of the temperature comparison unit is the average result output by the average calculation unit and the preset object temperature, the temperature comparison unit outputs the corresponding temperature comparison result by comparing the average result with the preset object temperature. The temperature comparison result is then used to adjust the sensitivity of the infrared sensor to ensure detection accuracy under different ambient temperatures and battery conditions, thereby improving the overall stability and reliability of the system.

[0032] It should be noted that the infrared sensor can be equipped with a signal receiving end, which is connected to the control module. Specifically, the signal receiving end can be used to receive adjustment signals to adjust the sensing sensitivity. The infrared sensor can then adjust its own sensing sensitivity according to these adjustment signals. The signal receiving end can also be connected to the output end of the temperature comparison unit. Therefore, the temperature comparison result output by the temperature comparison unit can be used as an adjustment signal and transmitted to the infrared sensor through the signal receiving end to achieve dynamic adjustment of the sensing sensitivity.

[0033] Infrared detection cameras in related technologies typically use fixed sensing sensitivity, which is difficult to adapt to changing environments, leading to unstable detection accuracy. Alternatively, they may use algorithms to compare ambient temperature with a preset object temperature. If the algorithm outputs a higher ambient temperature than the preset object temperature, the sensitivity of the infrared sensor is increased; if the algorithm outputs a lower or equal ambient temperature, the sensitivity is decreased. However, ambient temperature does not accurately reflect the operating status of the infrared detection camera, easily leading to false triggering and frequent startups, and failing to reduce power consumption. The infrared detection camera with adaptive sensitivity adjustment provided in this embodiment of the invention introduces battery temperature, which reflects the operating status of the infrared detection camera. Combining battery temperature with ambient temperature provides a more accurate reflection of the actual operating conditions of the infrared detection camera. Using the average of these two values ​​to dynamically adjust the sensitivity of the infrared sensor avoids the influence of fluctuations from a single temperature source, thus achieving more accurate adjustments under different temperature conditions, improving the sensing accuracy of the infrared detection camera while optimizing power consumption management.

[0034] It is worth noting that the real-time ambient temperature signal and battery temperature signal can refer to the electrical signals converted from the collected analog signals. Therefore, the magnitude of the real-time ambient temperature signal and battery temperature signal can be represented by the voltage value of the electrical signal. The averaging unit can be constructed using analog circuits or implemented using a microcontroller. For example, the averaging unit can use an operational amplifier to achieve the average value of two input signals. Specifically, an adder circuit can be constructed using the operational amplifier to superimpose the two input signals, and then the averaging function is achieved through a feedback resistor to obtain the average voltage signal. That is, the temperature sampling unit and the communication module are respectively connected to the input terminals of the operational amplifier. The superimposed signal obtained after superimposing the real-time ambient temperature signal and the battery temperature signal is divided by the feedback resistor to obtain the average result of the two; or the average of the two voltages can also be achieved using a resistor voltage divider network. Specifically, two resistors with the same resistance value are connected to two input signals respectively, and the voltage at the midpoint of the two resistors is taken as the average value to obtain the voltage signal of the average result. Alternatively, an analog-to-digital converter can be used to convert the real-time environmental signal and the battery temperature signal into digital signals, and then the average is calculated by a microcontroller to obtain the average result. Specifically, the communication module and the temperature sampling unit are connected to the microcontroller respectively, and the microcontroller's built-in algorithm processes the signal to output an accurate average signal. The average calculation algorithm built into the microcontroller can refer to the average calculation principle in related technologies. This embodiment of the utility model does not involve any improvement to the average calculation algorithm. Similarly, the temperature comparison unit can be a voltage comparator, which compares the voltage values ​​of two input signals and outputs high and low level signals to represent different comparison results. For example, the temperature comparison unit is connected to the average calculation unit and also to an interface that provides a preset object temperature signal to compare the magnitude relationship between the average result and the preset object temperature. In addition, the temperature comparison unit can also be implemented by a microprocessor, which compares the input average result with the preset object temperature using a built-in numerical comparison algorithm and outputs the temperature comparison result. The built-in numerical comparison algorithm of the microcontroller can also refer to the numerical comparison principle in related technologies. This embodiment of the utility model does not involve algorithmic improvements for numerical comparison processing.

[0035] Reference Figure 2 , Figure 2This is a schematic diagram of the sensing sensitivity adjustment principle provided in this embodiment of the utility model. The communication module and the temperature sampling unit are respectively connected to the mean calculation unit. The communication module transmits the received real-time ambient temperature signal to the mean calculation unit, and the temperature sampling unit also transmits the collected battery temperature signal to the mean calculation unit synchronously. The mean calculation unit can output the average value of the two input signals and transmit the mean result to the temperature comparison unit. In the temperature comparison unit, it is compared with the preset object temperature to obtain the adjustment signal used to adjust the sensing sensitivity of the infrared sensor. Specifically, when the average of the battery temperature signal and the real-time ambient temperature signal is greater than the preset target temperature, the temperature comparison unit outputs a first adjustment signal, such as a high-level signal. This first adjustment signal can indicate an increase in the sensitivity of the infrared sensor. Since background thermal radiation is stronger at higher ambient temperatures, increasing sensitivity helps detect minute changes in thermal radiation, ensuring effective detection of human activity even under high background radiation. Therefore, by combining battery temperature and ambient temperature as reference temperatures for sensitivity, it avoids excessive sensitivity increases due to ambient temperature in high-temperature environments, preventing frequent activation of the infrared detection camera. Conversely, if the average is less than or equal to the preset target temperature... The output comparison result of the temperature comparison unit is the second adjustment signal, such as a low-level signal. The second adjustment signal can indicate that the sensitivity of the infrared sensor is reduced. In low-temperature environments, the background heat radiation is low, which can easily cause false triggering. Reducing the sensitivity can reduce unnecessary startup and save power. Since the battery temperature of the infrared detection camera is stable under normal working conditions, comparing the average value of the battery temperature and the ambient temperature can prevent the sensitivity from being excessively reduced due to the influence of the ambient temperature in low-temperature environments, which could lead to missed detections by the infrared detection camera. Therefore, by introducing the battery temperature to adjust the sensitivity of the infrared detection camera, more accurate adjustment of the sensitivity can be achieved under different temperature conditions.

[0036] Reference Figure 3 , Figure 3This is a schematic diagram illustrating the detailed principle of the sensing sensitivity adjustment provided in this embodiment of the present invention. It is understood that the control module also includes a difference calculation unit and a first comparison unit. The input terminals of the difference calculation unit are connected to the communication module and the temperature sampling unit, respectively. The difference calculation unit can calculate the difference between two input signals, that is, the difference between the battery temperature signal and the real-time ambient temperature signal. The difference calculation unit can be an operational amplifier configured as a differential amplifier, using the differential amplifier to calculate the difference between the battery temperature signal and the real-time ambient temperature signal. Alternatively, the difference calculation unit can be implemented using a microcontroller, utilizing the microcontroller's built-in difference calculation algorithm to calculate the difference between the battery temperature signal input to the microcontroller and the real-time ambient temperature signal, and outputting the difference result. It is worth noting that the difference calculation algorithm built into the microcontroller can also refer to the difference calculation principles in related technologies. This embodiment of the present invention does not involve any improvement to the difference calculation processing algorithm. The difference result reflects the temperature difference between the battery temperature and the real-time ambient temperature. The comparison result between the difference and the preset difference threshold reflects whether the environment in which the infrared detection camera is located is normal. The output of the difference calculation unit is connected to the input of the first comparison unit. The first comparison unit can compare the magnitude relationship between the input data. The construction principle and data processing principle of the first comparison unit can refer to the temperature comparison unit proposed in the above embodiment. The first comparison unit can compare the difference between the input battery temperature signal and the real-time ambient temperature signal, and the magnitude relationship between the preset difference threshold. When the difference is less than or equal to the preset difference threshold, it means that the battery temperature and the real-time ambient temperature are close. Therefore, using the average result of the battery temperature and the real-time ambient temperature as the input of the temperature comparison unit can effectively avoid false triggering caused by ambient temperature fluctuations and improve the sensing accuracy of the infrared detection camera. At this time, the output of the first comparison unit is connected to the average calculation unit. When the difference exceeds the preset difference threshold, it indicates a significant difference between the battery temperature and the real-time ambient temperature. For example, frequent charging and discharging of the battery may cause an abnormal rise in battery temperature. If the average result is still used, it may lead to inaccurate sensing sensitivity. Therefore, only the real-time ambient temperature signal is used as the input of the temperature comparison unit to ensure that the sensing sensitivity is not affected by abnormal battery temperature. At this time, the input of the temperature comparison unit is also connected to the communication module, which is equivalent to transmitting only the real-time ambient temperature signal to the temperature comparison unit. The temperature comparison result output by comparing the value of the real-time ambient temperature signal with the value of the preset object temperature is used as the adjustment signal to adjust the sensing sensitivity.

[0037] It is worth noting that the signal input to the temperature comparison unit can change according to the output of the first comparison unit. That is, when the difference is greater than a preset temperature difference threshold, the temperature comparison unit will only compare the real-time ambient temperature signal with the preset object temperature; in this case, the real-time ambient temperature signal serves as the basis for adjusting the sensing sensitivity. Conversely, when the difference is less than or equal to the preset temperature difference threshold, the temperature comparison unit compares the average of the battery temperature signal and the real-time ambient temperature signal with the preset object temperature; in this case, both the battery temperature signal and the real-time ambient temperature signal serve as the basis for adjusting the sensing sensitivity. This signal change mechanism input to the temperature comparison unit is based on the accurate judgment of the difference between the battery temperature and the real-time ambient temperature. Through this dynamic adjustment mechanism, the infrared detection camera can adaptively optimize its sensing performance in different environments, ensuring that the infrared detection camera maintains high accuracy and high reliability under different temperature conditions, effectively improving the environmental adaptability and operational stability of the equipment.

[0038] Understandably, the output of the first comparison unit determines the selection of the input signal for the temperature comparison unit. Specifically, a first switch unit controlled by the output of the first comparison unit can be set between the input of the temperature comparison unit and the output of the average calculation unit, and a second switch unit controlled by the output of the first comparison unit can be set between the input of the temperature comparison unit and the communication module. Through the coordinated action of these two units, when the difference indicated by the output of the first comparison unit is less than or equal to a preset threshold, the first switch unit closes, the second switch unit opens, and the average result output by the average calculation unit is input to the input of the temperature comparison unit. The temperature comparison unit compares the average result with the preset object temperature, and the output temperature comparison result serves as the basis for adjusting the sensing sensitivity. Conversely, when the difference indicated by the output of the first comparison unit is greater than the preset threshold, the first switch unit opens, the second switch unit closes, and the average result of the average calculation unit cannot be input to the input of the temperature comparison unit. The real-time ambient temperature signal from the communication module is directly transmitted to the temperature comparison unit, and the temperature comparison unit compares the real-time ambient temperature signal with the preset object temperature, and the output temperature comparison result serves as the basis for adjusting the sensing sensitivity.

[0039] Understandably, when using the real-time ambient temperature signal from the communication module as the basis for adjusting the sensing sensitivity, the real-time ambient temperature is input to the temperature comparison unit. The temperature comparison unit compares the value of the real-time ambient temperature signal with the value of the preset object temperature. Similarly, when the value of the real-time ambient temperature signal is greater than the value of the preset object temperature, the temperature comparison unit outputs a first adjustment signal, hoping to increase the sensing sensitivity of the infrared sensor through the first adjustment signal; and when the value of the real-time ambient temperature signal is less than or equal to the value of the preset object temperature, the temperature comparison unit outputs a second adjustment signal, hoping to decrease the sensing sensitivity of the infrared sensor through the second adjustment signal.

[0040] Understandably, the control module also includes a signal receiver, which receives sensitivity signals used to adjust the sensitivity of the infrared sensor. This signal receiver can be connected to a communication module to receive sensitivity signals from external devices. For example, users can send sensitivity signals to the infrared detection camera via mobile phones, computers, or other external terminal devices. The infrared detection camera can receive these sensitivity signals through the signal receiver and use them to adjust the sensitivity of the infrared sensor. This allows for convenient remote adjustment and control of the infrared sensor, improving the flexibility and convenience of the infrared detection camera.

[0041] It is understandable that when adjusting the sensitivity of the infrared sensor, the current sensitivity of the infrared sensor is used as a reference value, and the adjustment is made based on the temperature comparison result output by the temperature comparison unit. The initial sensitivity of the infrared sensor can be the default value set at the factory, or a specific value set by a sensitivity signal sent from an external device. During the adjustment process, the sensitivity of the infrared sensor is adjusted according to the adjustment signal output by the temperature comparison unit. The following specific example illustrates the working principle of the infrared detection camera provided in this embodiment of the invention. Figure 4 As shown, Figure 4This is a schematic diagram illustrating the detailed principle of sensitivity adjustment under different operating conditions provided by this utility model. The infrared detection camera can receive a sensitivity signal sent by an external device through a signal receiver and set an initial sensitivity based on this signal. Alternatively, the infrared detection camera can use a factory-preset sensitivity. After startup, the infrared detection camera collects battery temperature signals through a temperature sampling unit and receives real-time ambient temperature signals through a communication module. The difference between the battery temperature signal and the real-time ambient temperature signal is compared with a preset difference threshold by a difference calculation unit and a first comparison unit in the control module. If the battery temperature is higher than the real-time ambient temperature and the difference exceeds the preset difference threshold, the battery is considered to be in a high-temperature state caused by frequent charging and discharging. In this case, only the real-time ambient temperature signal is used to adjust the sensitivity. The real-time ambient temperature signal is input to the temperature comparison unit and compared with a preset target temperature. If the real-time ambient temperature is higher than the preset target temperature, an output is output to increase the sensitivity. The first adjustment signal for sensing sensitivity is used. If the real-time ambient temperature is lower than or equal to the preset target temperature, a second adjustment signal is output to reduce the sensing sensitivity. When the battery temperature is close to the real-time ambient temperature (i.e., the difference between them does not exceed a preset difference threshold), the battery can be considered to be in normal working condition. In this case, the average value of the battery temperature signal and the real-time ambient temperature signal can be used as the adjustment basis. The average value of the battery temperature signal and the real-time ambient temperature signal is compared with the preset target temperature. If the average value is higher than the preset target temperature, the first adjustment signal is output to increase the sensing sensitivity; if the average value is lower than or equal to the preset target temperature, the second adjustment signal is output to decrease the sensing sensitivity. Through this intelligent adjustment mechanism, the infrared detection camera can maintain optimal working condition under different temperature environments. The infrared detection camera automatically enters a low-power sleep mode when it has been running for a preset sleep period and there is no human activity within its detection range, thus reducing power consumption. However, if someone passes by and the infrared sensor is activated, or if the camera is remotely activated (e.g., by viewing the camera's footage via a remote device), it will wake up, begin recording video, and record the footage. Simultaneously, the camera can collect battery temperature and real-time ambient temperature signals to readjust its sensitivity. Notably, in sleep mode, the infrared detection camera can periodically receive real-time ambient temperature signals via the communication module and periodically acquire battery temperature signals via the temperature sampling unit, ensuring real-time adjustment of the sensing sensitivity.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An infrared detection camera with adaptive sensitivity adjustment, characterized in that, include: Infrared sensor; The communication module is used to receive real-time ambient temperature signals provided by external devices; The battery management module includes a temperature sampling unit for measuring battery temperature signals; A control module, connected to the infrared sensor, includes a mean calculation unit for calculating the average value of input data and a temperature comparison unit for comparing the magnitudes of input data. The input terminals of the mean calculation unit are connected to the communication module and the temperature sampling unit, respectively, and the output terminal of the mean calculation unit is connected to the input terminal of the temperature comparison unit. This allows the temperature comparison unit to compare the average result of the real-time ambient temperature signal and the battery temperature signal with a preset object temperature to obtain a temperature comparison result used to adjust the sensing sensitivity of the infrared sensor. This enables the control module to adjust the sensing sensitivity of the infrared sensor based on the temperature comparison result. The mean calculation unit includes an operational amplifier or a resistor divider network; the temperature comparison unit is a voltage comparator.

2. The infrared detection camera according to claim 1, characterized in that, If the average value is greater than the preset object temperature, the temperature comparison result output by the temperature comparison unit is a first adjustment signal for improving the sensing sensitivity of the infrared sensor.

3. The infrared detection camera according to claim 1, characterized in that, If the value of the average result is less than or equal to the value of the preset object temperature, the temperature comparison result output by the temperature comparison unit is a second adjustment signal for reducing the sensing sensitivity of the infrared sensor.

4. The infrared detection camera according to claim 1, characterized in that, The control module further includes a difference calculation unit for calculating the difference between input data, and a first comparison unit for comparing the magnitude relationship of input data. The communication module and the temperature sampling unit are respectively connected to the input terminal of the difference calculation unit, and the input terminal of the first comparison unit is connected to the output terminal of the difference calculation unit.

5. The infrared detection camera according to claim 4, characterized in that, If the difference between the value of the battery temperature signal and the value of the real-time ambient temperature signal is less than or equal to a preset temperature difference threshold, the output of the first comparison unit is connected to the average calculation unit so that the preset object temperature and the average result output by the average calculation unit are input to the input of the temperature comparison unit.

6. The infrared detection camera according to claim 4, characterized in that, If the difference between the value of the battery temperature signal and the value of the real-time ambient temperature signal is greater than a preset temperature difference threshold, the input terminal of the temperature comparison unit is connected to the communication module so that the real-time ambient temperature signal is input to the input terminal of the temperature comparison unit.

7. The infrared detection camera according to claim 6, characterized in that, When the value of the real-time ambient temperature signal is greater than the value of the preset object temperature, the temperature comparison result output by the temperature comparison unit is a first adjustment signal for improving the sensing sensitivity of the infrared sensor.

8. The infrared detection camera according to claim 6, characterized in that, When the value of the real-time ambient temperature signal is less than or equal to the value of the preset object temperature, the temperature comparison result output by the temperature comparison unit is a second adjustment signal used to reduce the sensing sensitivity of the infrared sensor.

9. The infrared detection camera according to claim 1, characterized in that, The control module also includes a signal receiving terminal connected to the communication module to receive a sensitivity signal for adjusting the sensing sensitivity of the infrared sensor.

10. The infrared detection camera according to claim 1, characterized in that, The battery management module also includes a battery and a thermistor connected to the battery, and the temperature sampling unit is connected to the thermistor.

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