A law enforcement instrument with a fall alarm function

Abstract

The utility model relates to the technical field of law enforcement instruments, and specifically to a law enforcement instrument with a falling alarm function, including a host housing, an LCM display module, a light / distance sensor, an acceleration / gyroscope sensor, a geomagnetic sensor, a camera assembly and an alarm device; a main control circuit board is installed in the host housing, and the camera assembly and the LCM display module are both installed on the host housing. When the law enforcement instrument product is in use, if the law enforcement instrument accidentally falls, the acceleration / gyroscope sensor and the geomagnetic sensor will detect the current state of the law enforcement instrument in real time and transmit it to the main control circuit board. The main control circuit board automatically saves the current video in time without manual operation by the user, and sends an alarm message in time through the alarm device, which not only reminds the user of the working state of the law enforcement instrument, but also ensures the safe storage of the data of the law enforcement instrument. At the same time, it also ensures that the law enforcement instrument can work normally to prevent the use effect from being affected by the failure to record important evidence materials.

Description

Technical Field

[0001] The utility model relates to the technical field of law enforcement instruments, in particular to a law enforcement instrument with a falling alarm function. Background Art

[0002] Existing body camera technology only focuses on the start and end of video recording, and does not actively respond to some emergencies that occur during the recording process. For example, when law enforcement officers are performing their duties, the body camera equipment may be damaged if it accidentally falls, resulting in the recorded video not being saved properly, causing the loss of evidence materials and causing a lot of inconvenience to users. Utility Model Content

[0003] The utility model provides a law enforcement instrument with a falling alarm function and a video storage and alarm function to solve the defects and shortcomings of the prior art.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is a law enforcement instrument with a fall alarm function, including a host housing, an LCM display module, a light / distance sensor, an acceleration / gyroscope sensor, a geomagnetic sensor, a camera assembly and an alarm device; a main control circuit board is installed in the host housing, and the camera assembly and the LCM display module are both installed on the host housing and electrically connected to the main control circuit board; the light / distance sensor, the geomagnetic sensor, the camera assembly, and the alarm device are all electrically connected to the main control circuit board; the acceleration / gyroscope sensor is electrically connected to the main control circuit board through an I2C interface; the acceleration / gyroscope sensor is used to detect whether the law enforcement instrument is in a falling state and calculate the acceleration of the law enforcement instrument falling; the geomagnetic sensor is used for positioning, orientation and posture control of the law enforcement instrument; the camera assembly is used to capture images around the law enforcement instrument; the light / distance sensor is used to detect whether there is an object close to the camera assembly and detect the ambient light intensity around the law enforcement instrument; the LCM display module is used to display the picture captured by the camera assembly and touch operation; the alarm device is used to alarm the law enforcement instrument when it is in a falling state.

[0005] Furthermore; the law enforcement instrument with a fall alarm function also includes a power chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first filter capacitor, a second filter capacitor and a third filter capacitor; the first resistor and the second resistor are connected in series, one end is connected to the twelfth pin of the acceleration / gyroscope sensor, and the other end is grounded, and the common end of the first resistor and the second resistor is connected to the first pin of the acceleration / gyroscope sensor; one end of the first filter capacitor is grounded, and the other end is connected to the twelfth pin of the acceleration / gyroscope sensor; the twelfth pin of the acceleration / gyroscope sensor is connected to SENSOR_I0_1V8, the fourth pin of the acceleration / gyroscope sensor is connected to the 106th pin of the main control circuit board, the fifth pin of the acceleration / gyroscope sensor is connected to the first filter capacitor, the sixth pin and the seventh pin of the acceleration / gyroscope sensor are connected in series, and the six pins The common end of the acceleration / gyro sensor and the seventh pin is grounded, the thirteenth pin of the acceleration / gyro sensor is connected to the ninety-first pin of the main control circuit board, and the fourteenth pin of the acceleration / gyro sensor is connected to the ninety-second pin of the main control circuit board; one end of the third resistor is grounded, and the other end is connected to the eleventh pin of the acceleration / gyro sensor; one end of the fourth resistor is grounded, and the other end is connected to the tenth pin of the acceleration / gyro sensor; one end of the fifth resistor is connected to the ninth pin of the acceleration / gyro sensor, and the other end is connected to the one hundred and tenth pin of the main control circuit board; the eighth pin of the acceleration / gyro sensor is electrically connected to the power chip; one end of the sixth resistor is grounded, and the other end is electrically connected to the fifth resistor; one end of the second filter capacitor is grounded, and the other end is connected to the eighth pin of the acceleration / gyro sensor; one end of the third filter capacitor is connected to the eighth pin of the acceleration / gyro sensor, and the other end is grounded.

[0006] Furthermore, the camera assembly includes a front camera, a rear camera and a depth-of-field camera, and the front camera, the rear camera and the depth-of-field camera are all electrically connected to the main control circuit board.

[0007] Furthermore, the LCM display module includes a backlight circuit, a touch screen and a liquid crystal display screen, and the backlight circuit, the touch screen and the liquid crystal display screen are all electrically connected to the main control circuit board.

[0008] Furthermore, the alarm device includes a speaker, and the speaker is electrically connected to the main controller.

[0009] Furthermore, the law enforcement instrument with a fall alarm function also includes a flash light, and the flash light is electrically connected to the main control circuit board through a drive circuit.

[0010] Furthermore, the host housing is also provided with an audio input / output interface and an antenna interface connected to the main control circuit board, and the audio input / output interface is respectively connected to a microphone, a receiver, and a headset.

[0011] Furthermore, the model of the acceleration / gyroscope sensor is ICM-40608.

[0012] Beneficial effects of the utility model:

[0013] The utility model provides a law enforcement device with a drop alarm function. When the law enforcement device is accidentally dropped during use, the acceleration / gyroscope sensor and the geomagnetic sensor will detect the current state of the law enforcement device in real time and transmit it to the main control circuit board. The main control circuit board automatically saves the current video in time without manual operation by the user, and sends out alarm information in time through the alarm device, which not only reminds the user of the working state of the law enforcement device, but also ensures the safe storage of the data of the law enforcement device. At the same time, it also ensures that the law enforcement device can work normally, and prevents the use effect from being affected by the failure to record important evidence materials. The system is not only simple in structure, low in cost, but also easy to implement and promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural block diagram of a law enforcement instrument with a fall alarm function according to the utility model;

[0015] Figure 2 This is a circuit schematic diagram of a main control circuit board in a law enforcement instrument with a fall alarm function according to the utility model;

[0016] Figure 3 This is a circuit schematic diagram of a main control circuit board in a law enforcement instrument with a fall alarm function according to the utility model;

[0017] Figure 4 The utility model is a circuit diagram of a power chip in a law enforcement instrument with a fall alarm function. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0021] The utility model provides a law enforcement instrument with a falling alarm function.

[0022] In the embodiment of the present utility model, Figure 1 As shown, the law enforcement instrument with a fall alarm function includes a host housing, an LCM display module, a light / distance sensor, an acceleration / gyroscope sensor, a geomagnetic sensor, a camera assembly and an alarm device; a main control circuit board is installed in the host housing, and the camera assembly and the LCM display module are both installed on the host housing and electrically connected to the main control circuit board; the light / distance sensor, the geomagnetic sensor, the camera assembly and the alarm device are all electrically connected to the main control circuit board; the acceleration / gyroscope sensor is electrically connected to the main control circuit board through an I2C interface; the acceleration / gyroscope sensor is used to detect whether the law enforcement instrument is in a falling state and calculate the acceleration of the law enforcement instrument falling; the geomagnetic sensor is used for positioning, orientation and posture control of the law enforcement instrument; the camera assembly is used to capture images around the law enforcement instrument; the light / distance sensor is used to detect whether there is an object close to the camera assembly and detect the ambient light intensity around the law enforcement instrument; the LCM display module is used to display the image captured by the camera assembly and touch operation; the alarm device is used to alarm the law enforcement instrument when it is in a falling state.

[0023] In this embodiment, the law enforcement instrument with a fall alarm function also includes a power chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first filter capacitor, a second filter capacitor and a third filter capacitor; the first resistor and the second resistor are connected in series, one end is connected to the twelfth pin of the acceleration / gyroscope sensor, and the other end is grounded, and the common end of the first resistor and the second resistor is connected to the first pin of the acceleration / gyroscope sensor; one end of the first filter capacitor is grounded, and the other end is connected to the twelfth pin of the acceleration / gyroscope sensor; the twelfth pin of the acceleration / gyroscope sensor is connected to SENSOR_I0_1V8, the fourth pin of the acceleration / gyroscope sensor is connected to the 106th pin of the main control circuit board, the fifth pin of the acceleration / gyroscope sensor is connected to the first filter capacitor, the sixth pin and the seventh pin of the acceleration / gyroscope sensor are connected in series, and the six pins The common end of the first pin and the seventh pin is grounded, the thirteenth pin of the acceleration / gyro sensor is connected to the ninety-first pin of the main control circuit board, and the fourteenth pin of the acceleration / gyro sensor is connected to the ninety-second pin of the main control circuit board; one end of the third resistor is grounded, and the other end is connected to the eleventh pin of the acceleration / gyro sensor; one end of the fourth resistor is grounded, and the other end is connected to the tenth pin of the acceleration / gyro sensor; one end of the fifth resistor is connected to the ninth pin of the acceleration / gyro sensor, and the other end is connected to the one hundred and tenth pin of the main control circuit board; the eighth pin of the acceleration / gyro sensor is electrically connected to the power chip; one end of the sixth resistor is grounded, and the other end is electrically connected to the fifth resistor; one end of the second filter capacitor is grounded, and the other end is connected to the eighth pin of the acceleration / gyro sensor; one end of the third filter capacitor is connected to the eighth pin of the acceleration / gyro sensor, and the other end is grounded.

[0024] In this embodiment, the camera assembly includes a front camera, a rear camera and a depth-of-field camera, and the front camera, the rear camera and the depth-of-field camera are all electrically connected to the main control circuit board.

[0025] In this embodiment, the LCM display module includes a backlight circuit, a touch screen and a liquid crystal display screen, and the backlight circuit, the touch screen and the liquid crystal display screen are all electrically connected to the main control circuit board.

[0026] In this embodiment, the alarm device includes a speaker, and the speaker is electrically connected to the main controller.

[0027] In this embodiment, the law enforcement instrument with a fall alarm function also includes a flash light, and the flash light is electrically connected to the main control circuit board through a driving circuit.

[0028] In this embodiment, the host housing is also provided with an audio input / output interface and an antenna interface connected to the main control circuit board, and the audio input / output interface is respectively connected to a microphone, a receiver, and an earphone.

[0029] In this embodiment, the model of the acceleration / gyroscope sensor is ICM-40608.

[0030] like Figure 2 As shown, U1 is the main control circuit board, which is mainly responsible for image processing, data storage, and communication with each component, etc. U12 is an accelerometer / gyroscope sensor, which is an electronic device that can measure acceleration. When an emergency occurs during the use of the law enforcement device and it accidentally falls, the accelerometer / gyroscope sensor U12 (ICM-40608) detects the change in the acceleration and gravity information of the law enforcement device, communicates with the main control circuit board through the I2C interface (LPI_SENSOR_I2C0_SDA, LPI_SENSOR_I2C0_SCL) and the interrupt signal (ACCEL_INT), and outputs a signal (GYRO_INT) to the main control circuit board. After detecting the output signal and the information fed back by the I2C interface, the main control circuit board saves the currently recorded video in time, and sends a notification signal to the speaker to alarm. The speaker serves as an alarm, and if the law enforcement device is not damaged, it continues to record the next segment.

[0031] Specifically, Figure 3-4 As shown, U2 is the power chip, responsible for supplying power (SENSOR_VDD) to U12, VSYS is the power input terminal of U2, and enters U2 after being filtered by capacitor C26, G_SENSOR_EN is the enable pin of the power chip, which is high and effective. When it is high, the power chip output voltage SENSOR_VDD is filtered by capacitors C27, C41, and C42 and then output to the acceleration / gyroscope sensor U12. After the acceleration / gyroscope sensor U12 is powered on, it exchanges information with the main control circuit board U1 in real time through I2C (LPI_SENSOR_I2C0_SDA, LPI_SENSOR_I2C0_SCL) and interrupt signal (ACCEL_INT). After the main control circuit board U1 receives the relevant information, it records the video and saves it and alarms.

[0032] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A body camera with a fall alarm function, characterized in that: It includes a host shell, an LCM display module, a light / distance sensor, an acceleration / gyroscope sensor, a geomagnetic sensor, a camera assembly and an alarm device; a main control circuit board is installed in the host shell, and the camera assembly and the LCM display module are both installed on the host shell and electrically connected to the main control circuit board; the light / distance sensor, the geomagnetic sensor, the camera assembly and the alarm device are all electrically connected to the main control circuit board; the acceleration / gyroscope sensor is electrically connected to the main control circuit board through an I2C interface; the acceleration / gyroscope sensor is used to detect whether the law enforcement instrument is in a falling state and calculate the acceleration of the law enforcement instrument falling; the geomagnetic sensor is used for positioning, orientation and posture control of the law enforcement instrument; the camera assembly is used to capture images around the law enforcement instrument; the light / distance sensor is used to detect whether there is an object close to the camera assembly and detect the ambient light intensity around the law enforcement instrument; the LCM display module is used to display the picture captured by the camera assembly and touch operation; the alarm device is used to alarm the law enforcement instrument when it is in a falling state.

2. The body camera with a fall alarm function as claimed in claim 1, characterized in that: The law enforcement instrument with a fall alarm function also includes a power chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first filter capacitor, a second filter capacitor and a third filter capacitor; the first resistor and the second resistor are connected in series, one end of which is connected to the twelfth pin of the acceleration / gyroscope sensor, and the other end is grounded, and the common end of the first resistor and the second resistor is connected to the first pin of the acceleration / gyroscope sensor; one end of the first filter capacitor is grounded, and the other end is connected to the twelfth pin of the acceleration / gyroscope sensor; the twelfth pin of the acceleration / gyroscope sensor is connected to SENSOR_I0_1V8, the fourth pin of the acceleration / gyroscope sensor is connected to the 106th pin of the main control circuit board, the fifth pin of the acceleration / gyroscope sensor is connected to the first filter capacitor, the sixth pin and the seventh pin of the acceleration / gyroscope sensor are connected in series, and the sixth pin and the seventh pin are connected in series. The common end of the pins is grounded, the thirteenth pin of the acceleration / gyro sensor is connected to the ninety-first pin of the main control circuit board, and the fourteenth pin of the acceleration / gyro sensor is connected to the ninety-second pin of the main control circuit board; one end of the third resistor is grounded, and the other end is connected to the eleventh pin of the acceleration / gyro sensor; one end of the fourth resistor is grounded, and the other end is connected to the tenth pin of the acceleration / gyro sensor; one end of the fifth resistor is connected to the ninth pin of the acceleration / gyro sensor, and the other end is connected to the one hundred and tenth pin of the main control circuit board; the eighth pin of the acceleration / gyro sensor is electrically connected to the power chip; one end of the sixth resistor is grounded, and the other end is electrically connected to the fifth resistor; one end of the second filter capacitor is grounded, and the other end is connected to the eighth pin of the acceleration / gyro sensor; one end of the third filter capacitor is connected to the eighth pin of the acceleration / gyro sensor, and the other end is grounded.

3. The body camera with a fall alarm function as claimed in claim 2, characterized in that: The camera assembly includes a front camera, a rear camera and a depth-of-field camera, and the front camera, the rear camera and the depth-of-field camera are all electrically connected to the main control circuit board.

4. The body camera with a fall alarm function as claimed in claim 1, characterized in that: The LCM display module includes a backlight circuit, a touch screen and a liquid crystal display screen, and the backlight circuit, the touch screen and the liquid crystal display screen are all electrically connected to the main control circuit board.

5. The body camera with a fall alarm function as claimed in claim 1, characterized in that: The alarm device comprises a speaker, and the speaker is electrically connected to the main control circuit board.

6. The body camera with a fall alarm function as claimed in claim 1, characterized in that: The law enforcement instrument with a fall alarm function also includes a flash light, which is electrically connected to the main control circuit board through a drive circuit.

7. The body camera with a fall alarm function as claimed in claim 1, characterized in that: The host housing is also provided with an audio input / output interface and an antenna interface connected to the main control circuit board, and the audio input / output interface is respectively connected to a microphone, a receiver, and an earphone.

8. The body camera with a fall alarm function as claimed in claim 2, characterized in that: The model of the acceleration / gyroscope sensor is ICM-40608.

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