Displacement vibration sensor

Abstract

The utility model is suitable for the technical field of security and protection equipment, and provides a displacement vibration sensor, which comprises a mounting shell, a displacement sensor and a vibration sensor, the main control assembly comprises a main control board, an anti-disassembly switch and an adjusting switch, and the main control board is provided with a displacement detection unit and an ultrasonic detection unit; the anti-disassembly switch and the adjusting switch are installed on the main control board. The displacement detection unit and the ultrasonic detection unit are arranged on the main control board in the main control assembly, whether foreign matter intervenes in a detected area or an object is moved or not is detected through the displacement detection unit and the ultrasonic detection unit respectively, the main control board outputs an alarm signal, the situation of false alarm is reduced, and the switch is prevented from being disassembled. When the installation shell is illegally disassembled, the main control board outputs an alarm signal, the sensitivity threshold value of the displacement detection unit can be adjusted through the adjusting switch, and the situation that due to the fact that the sensitivity of the sensor does not conform to a detected area, the detection effect is affected by missed alarm is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of security equipment, and particularly relates to a displacement vibration sensor. Background Art

[0002] The monitoring components of a security protection system need to be combined with alarm, communication, and control systems to form a comprehensive and efficient security solution. The application fields of security protection systems are very extensive and are often used in residential security, commercial buildings, industrial facilities, public facilities, educational institutions, medical institutions, banks and financial institutions, government facilities, transportation systems, smart cities, cultural heritage, sports and entertainment venues, etc. With the development of technology, security systems increasingly rely on automation, intelligence, and networking technologies to improve the accuracy and response speed of monitoring.

[0003] The role of a security protection system in a showcase for precious items is crucial. It ensures the safety and integrity of exhibits through various facilities and technical means. The main functions and facilities of common security protection systems in precious showcases are: theft prevention, environmental monitoring, access control, video surveillance, alarm systems, exhibit tracking, physical protection, etc. Among them, sensors are used in the alarm system for detection. When the sensor detects an abnormal situation or someone attempts to illegally touch the exhibit, the alarm system will issue an alarm to notify security personnel.

[0004] In the prior art, in most cases, wireless sensors are selected for display cabinets to prevent signal attenuation of the sensors caused by connecting wires. The sensitivity of wireless products determines the occurrence of false alarms or missed alarms of the sensors. Different sensitivity sensors can be selected according to requirements. Usually, the sensor is installed in a corner of the showcase. High-sensitivity sensors will generate false alarms of alarm signals due to slight external vibrations during use. If lower-sensitivity sensors are selected, there will be missed alarms, and the detection effect is not good, affecting the safety of exhibits on the showcase. Summary of the Utility Model

[0005] The purpose of the embodiment of the utility model is to provide a displacement vibration sensor, aiming to solve the problem that in most cases, wireless sensors are selected for display cabinets to prevent signal attenuation of the sensors caused by connecting wires. The sensitivity of wireless products determines the occurrence of false alarms or missed alarms of the sensors. Different sensitivity sensors can be selected according to requirements. Usually, the sensor is installed in a corner of the showcase. High-sensitivity sensors will generate false alarms of alarm signals due to slight external vibrations during use. If lower-sensitivity sensors are selected, there will be missed alarms, and the detection effect is not good, affecting the safety of exhibits on the showcase.

[0006] The embodiments of the present utility model are implemented as follows. A displacement and vibration sensor, the displacement and vibration sensor comprising:

[0007] An installation shell, with a cavity structure formed inside the installation shell;

[0008] A main control component, installed inside the cavity of the installation shell. The main control component includes a main control board, an anti - tampering switch, and an adjustment switch. The main control board is provided with a displacement detection unit and an ultrasonic detection unit. The displacement detection unit is used to detect whether there is a foreign object intervening in the detected area or whether the items in the area are moved to generate an electrical signal and transmit the electrical signal to the main control board. The ultrasonic detection unit uses ultrasonic waves to detect whether there is a foreign object intervening in the detected area or whether the position of the items in the area changes to generate a signal and transmit the signal to the main control board;

[0009] The anti - tampering switch is installed on the main control board and connected to the inner wall surface of the installation shell. The anti - tampering switch is used to prevent the installation shell from being opened. The adjustment switch is installed on the main control board, and the adjustment switch is used to adjust the displacement sensitivity threshold of the displacement detection unit on the main control board.

[0010] Preferably, the installation shell includes a front shell and a rear shell. The front shell is an irregular semi - enclosed shell. A lens and a first positioning hole are provided on the front surface of the front shell. The lens is used to receive external light and project the received external light after convergence onto the displacement detection unit of the main control component. The first positioning hole is used to position the main control board. Multiple installation bumps and installation grooves are provided on the inner wall surface of the front shell. The installation bumps are used to install the main control board, and the installation grooves are used to connect with the rear shell.

[0011] Preferably, the rear shell is an irregular structure. A second positioning hole and multiple first installation holes are provided on the back surface of the rear shell. The second positioning hole is used to position the main control board installed on the rear shell. The first installation holes are used to install the displacement and vibration sensor at the installation position. Multiple installation cylinders and connection bumps are provided on the inner wall surface of the rear shell. The installation cylinders install the main control board on the rear shell through fixing parts. The connection bumps cooperate with the installation grooves on the front shell so that the rear shell is connected to the front shell.

[0012] Preferably, the main control board is provided with multiple second installation holes, and the second installation holes are used to connect with fixing parts to fix the main control board on the rear shell.

[0013] Preferably, the main control board is further provided with a signal lamp unit and a power - on key unit. The signal lamp unit, the power - on key unit, the displacement detection unit, and the ultrasonic detection unit are respectively electrically connected to the main control board through connecting wires. The signal lamp unit is provided with a signal lamp, and the signal lamp is positioned at the first positioning hole of the front shell.

[0014] Preferably, the anti-disassembly switch is provided with a connecting part and a mounting part. The mounting part is mounted on the main control board and electrically connected to the main control board. The connecting part is connected to the front shell. After the front shell is separated from the rear shell, the connecting part of the anti-disassembly switch is disconnected from the inner wall surface of the front shell to generate an electrical signal and transmit the generated electrical signal to the main control board.

[0015] Preferably, the adjustment switch is electrically connected to the main control board, and the adjustment switch adjusts the signal intensity of the displacement detection unit to facilitate adjusting the sensitivity threshold of displacement detection.

[0016] Preferably, the main control assembly further includes a wiring component, which is mounted on the main control board and is used to fix the connecting wires connected to the main control board.

[0017] A displacement and vibration sensor provided by an embodiment of the present invention. The present invention provides an installation shell for installing the main control assembly. In the main control assembly, the main control board is provided with a displacement detection unit and an ultrasonic detection unit, which respectively detect whether there is a foreign object intervening or the position of an item is moved in the detected area through the displacement detection unit and the ultrasonic detection unit. At the same time, the detected signals are transmitted to the main control board and then the main control board outputs an alarm signal to reduce false alarms. An anti-disassembly switch is provided on the main control board. When the installation shell is illegally disassembled, the anti-disassembly switch transmits a signal to the main control board so that the main control board outputs an alarm signal. An adjustment switch is provided, and the sensitivity threshold of the displacement detection unit can be adjusted according to the requirements of the detected area, reducing the missed alarm caused by the mismatch between the sensor sensitivity and the detected area and affecting the detection effect, and solving the problem that the poor detection effect affects the safety of the exhibits in the detected area. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structure diagram of a displacement and vibration sensor provided by an embodiment of the present invention;

[0019] Figure 2 It is an internal structure schematic diagram of the main control board in a displacement and vibration sensor provided by an embodiment of the present invention.

[0020] In the drawings: 1, front shell; 2, rear shell; 21, fixing part; 3, main control board; 31, signal lamp; 32, displacement detection unit; 33, ultrasonic detection unit; 34, signal lamp unit; 35, power switch unit; 4, anti-disassembly switch; 5, adjustment switch; 6, wiring component. Detailed Embodiments

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The following is a detailed description of the specific implementation of the present utility model in combination with specific embodiments.

[0023] As Figure 1-2 shown, it is a structural diagram of a displacement vibration sensor provided by an embodiment of the present utility model, including: a mounting shell, and a cavity structure is formed inside the mounting shell;

[0024] A main control component, the main control component is installed in the inner cavity of the mounting shell. The main control component includes a main control board 3, an anti-tamper switch 4, and an adjustment switch 5. The main control board 3 is provided with a displacement detection unit 32 and an ultrasonic detection unit 33. The displacement detection unit 32 is used to detect whether there is a foreign object intervening in the detected area or whether the items in the area are moved to generate an electrical signal and transmit the electrical signal to the main control board 3. The ultrasonic detection unit 33 detects whether there is a foreign object intervening in the detected area or whether the position of the items in the area changes by ultrasonic waves to generate a signal and transmit the signal to the main control board 3;

[0025] The anti-tamper switch 4 is installed on the main control board 3 and connected to the inner wall surface of the mounting shell. The anti-tamper switch 4 is used to prevent the mounting shell from being opened. The adjustment switch 5 is installed on the main control board 3. The adjustment switch 5 is used to adjust the displacement sensitivity threshold of the displacement detection unit 32 on the main control board 3.

[0026] In an embodiment of the present utility model, preferably, the displacement vibration sensor can be adapted to be installed on the display cabinet of valuable items to protect the exhibits in the display cabinet. The displacement vibration sensor can detect whether the exhibits in the display cabinet are displaced or there are foreign objects intervening in the display cabinet through the displacement detection unit 32 and the ultrasonic detection unit 33 connected to the main control board 3 of the main control component. The ultrasonic detection unit 33 generates ultrasonic signals through the transmitting end and the receiving end of the ultrasonic vibration module and transmits them to the main control board 3. The displacement vibration sensor can monitor the entire display cabinet or other enclosed spaces. The range of the moving speed of the intrusion substance that the displacement detection unit 32 can detect can be 0.02 m / s - 1 m / s, and the alarm output signal time of the entire displacement vibration sensor is not less than 2 seconds. The ultrasonic frequency of the ultrasonic detection unit 33 can be set to 40000 Hz. Through the ultrasonic vibration function, it is detected whether the position of the exhibits in the display cabinet is shifted or whether there are foreign objects entering the display cabinet. The signal is sent to a specific area through a specific ultrasonic signal generator, and the signals in this area are collected, and then the signal period, amplitude, polarity, etc. are analyzed and compared to determine whether the monitored item is moved or there are abnormal objects entering the detected area, reducing situations such as missed alarms and false alarms; An anti-tamper switch 4 and an adjustment switch 5 are also provided in the main control component. When the sensor is maliciously damaged and the installation shell is opened, the signal separated by the anti-tamper switch 4 is transmitted to the main control board 3 and an alarm signal is issued. The adjustment switch 5 is mainly used to adjust the detection sensitivity of the displacement detection unit 32, and can be adjusted according to the characteristic requirements of the monitored product. When the product will receive slight swings or vibrations due to the influence of the external environment, a lower sensitivity gear can be selected to prevent false alarms. However, when the monitored product will not receive slight swings due to the influence of the external environment, a higher sensitivity gear needs to be selected for detection to prevent missed alarms.

[0027] In an example of the present utility model, an installation shell for installing the main control component is provided. The main control board 3 in the main control component is provided with a displacement detection unit 32 and an ultrasonic detection unit 33, which respectively detect whether there are foreign objects intervening or the position of the item is moved in the detected area. At the same time, the detected signals are transmitted to the main control board 3 and then the main control board 3 outputs an alarm signal, reducing the situation of false alarms. An anti-tamper switch 4 is provided on the main control board 3. When the installation shell is illegally disassembled, the anti-tamper switch 4 transmits a signal to the main control board 3 so that the main control board 3 outputs an alarm signal. An adjustment switch 5 is provided, and the sensitivity threshold of the displacement detection unit 32 can be adjusted according to the requirements of the detected area, reducing the missed alarm effect on the detection caused by the mismatch between the sensor sensitivity and the detected area, and solving the problem that the detection effect is not good and affecting the safety of the exhibits in the detected area.

[0028] As shown Figure 1-2 In the figure, as a preferred embodiment of the present utility model, the installation shell includes a front shell 1 and a rear shell 2. The front shell 1 is an irregular semi-closed shell. A lens and a first positioning hole are provided on the front surface of the front shell 1. The lens is used to receive external light and project the received external light onto the displacement detection unit 32 of the main control component after convergence. The first positioning hole is used to position the main control board 3. A plurality of installation bumps and installation grooves are provided on the inner wall surface of the front shell 1. The installation bumps are used to install the main control board 3, and the installation grooves are used to connect with the rear shell 2.

[0029] In the embodiment of the present utility model, preferably, the installation shell can be composed of the front shell 1 and the rear shell 2, and the main control component inside the product is protected by the front shell 1 and the rear shell 2 together. A through hole for installing the lens can be provided on the front shell 1. The displacement detection unit 32 and the ultrasonic detection unit 33 detect through the light converged and projected by the lens to ensure the detection effect. A first positioning hole is provided on the outer side surface of the front shell 1, and the main control board 3 is positioned on the inner wall surface of the front shell 1 through the first positioning hole and the installation bumps on the inner wall surface of the front shell 1 are connected to the main control board 3.

[0030] As shown Figure 1-2 In the figure, as a preferred embodiment of the present utility model, the rear shell 2 is an irregular structure. A second positioning hole and a plurality of first mounting holes are provided on the back surface of the rear shell 2. The second positioning hole is used to position the main control board 3 installed on the rear shell 2, and the first mounting holes are used to install the displacement vibration sensor in the installation position. A plurality of installation cylinders and connecting bumps are provided on the inner wall surface of the rear shell 2. The installation cylinders install the main control board 3 on the rear shell 2 through the fixing member 21, and the connecting bumps cooperate with the installation grooves on the front shell 1 so that the rear shell 2 is connected to the front shell 1.

[0031] In the embodiment of the present utility model, preferably, the rear shell 2 is provided with a plurality of first mounting holes on the back surface to facilitate hanging or installing the entire displacement vibration sensor in the installation position. A hook can be provided on the display cabinet or the displacement vibration sensor can be installed in the installation position of the monitored area by using the pasting method. A plurality of installation cylinders with a certain length are provided on the inner wall surface of the rear shell 2 to facilitate the installation of the main control board 3 on the rear shell 2. A plurality of connecting bumps can be provided at the edge of the inner wall surface of the rear shell 2 and embedded in the installation grooves of the front shell 1 so that the front shell 1 and the rear shell 2 are completely installed together and protect the main control component installed inside the cavity together.

[0032] As shown Figure 1-2 In the figure, as a preferred embodiment of the present utility model, the main control board 3 is provided with a plurality of second mounting holes, and the second mounting holes are used to connect with the fixing member 21 to fix the main control board 3 on the rear shell 2.

[0033] In an embodiment of the present utility model, preferably, a plurality of second mounting holes may be provided on the rectangular plate-shaped main control board 3. The second mounting holes are sleeved on the mounting cylinders on the tail shell 2, and the main control board 3 is fixed to the tail shell 2 by fixing members 21 to prevent the main control board 3 from shifting and affecting the signal transmission of the anti-tamper switch 4.

[0034] As Figure 1-2 shown, as a preferred embodiment of the present utility model, the main control board 3 is further provided with a signal lamp 31 unit and a power switch unit 35. The signal lamp 31 unit, the power switch unit 35, the displacement detection unit 32, and the ultrasonic detection unit 33 are respectively electrically connected to the main control board 3 through connecting wires. The signal lamp 31 unit is provided with a signal lamp 31, and the signal lamp 31 is positioned on the first positioning hole of the front shell 1.

[0035] In an embodiment of the present utility model, preferably, the main control board 3 may also be provided with a signal lamp 31 unit and a power switch unit 35. The signal lamp 31 installed on the signal lamp 31 unit is mounted on the main control board 3, and by positioning the signal lamp 31 on the first positioning hole of the front shell 1, it is convenient to control the lighting state of the signal lamp 31 for the alarm signal. The power switch unit 35 is mainly used to control the opening or closing of the displacement vibration sensor.

[0036] As Figure 1-2 shown, as a preferred embodiment of the present utility model, the anti-tamper switch 4 is provided with a connecting portion and a mounting portion. The mounting portion is mounted on the main control board 3 and is electrically connected to the main control board 3. The connecting portion is connected to the front shell 1. After the front shell 1 and the tail shell 2 are separated, the connecting portion of the anti-tamper switch 4 is disconnected from the inner wall surface of the front shell 1 to generate an electrical signal and transmit the generated electrical signal to the main control board 3.

[0037] In an embodiment of the present utility model, preferably, the anti-tamper switch 4 is electrically connected to the main control board 3 through the mounting portion, and the connecting portion is connected to the inside of the mounting shell to form a complete circuit connection. At the same time, normally closed connection contacts are provided. When the front shell 1 and the tail shell 2 are separated, the contacts are disconnected and an alarm signal is generated by the main control board 3 immediately, which can effectively prevent the sensor from being maliciously damaged and prevent the sensor from misreporting.

[0038] As Figure 1-2 shown, as a preferred embodiment of the present utility model, the adjustment switch 5 is electrically connected to the main control board 3, and the adjustment switch 5 adjusts the signal intensity of the displacement detection unit 32 to facilitate adjusting the sensitivity threshold of displacement detection.

[0039] In the embodiment of the present utility model, preferably, the adjustment switch 5 for detecting the sensitivity of the displacement detection unit 32 can be adjusted according to the usage scenario of the displacement vibration sensor. During the use of the adjustment switch 5, the signal strength transmitted by the displacement detection unit 32 to the main control board 3 is adjusted, thereby adjusting the sensitivity during its detection process.

[0040] As Figure 1-2 shown, as a preferred embodiment of the present utility model, the main control assembly further includes a wiring member 6. The wiring member 6 is installed on the main control board 3, and the wiring member 6 is used to fix the connection wires connected to the main control board 3.

[0041] In the embodiment of the present utility model, preferably, a wiring member 6 is further provided in the main control assembly. The wiring member 6 can be set in a box shape and provided with a plurality of connection positions for fixing the connection wires. The connection wires can be connection members electrically connected to the main control board 3.

[0042] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A displacement vibration sensor, characterized in that, The displacement and vibration sensor includes: An installation shell, with a cavity structure formed inside the installation shell; A main control component, which is installed inside the cavity of the installation shell. The main control component includes a main control board, an anti - tamper switch, and an adjustment switch. The main control board is provided with a displacement detection unit and an ultrasonic detection unit. The displacement detection unit is used to detect whether there is a foreign object intervening in the detected area or whether the items in the area are moved to generate an electrical signal and transmit the electrical signal to the main control board. The ultrasonic detection unit uses ultrasonic waves to detect whether there is a foreign object intervening in the detected area or whether the position of the items in the area has changed to generate a signal and transmit the signal to the main control board; The anti - tamper switch is installed on the main control board and connected to the inner wall surface of the installation shell. The anti - tamper switch is used to prevent the installation shell from being opened. The adjustment switch is installed on the main control board, and the adjustment switch is used to adjust the displacement sensitivity threshold of the displacement detection unit on the main control board.

2. The displacement vibration sensor according to claim 1, wherein, The installation shell includes a front shell and a rear shell. The front shell is an irregular semi - enclosed shell. A lens and a first positioning hole are provided on the front surface of the front shell. The lens is used to receive external light and project the received external light onto the displacement detection unit of the main control component after convergence. The first positioning hole is used to position the main control board. A plurality of installation bumps and installation grooves are provided on the inner wall surface of the front shell. The installation bumps are used to install the main control board, and the installation grooves are used to connect with the rear shell.

3. The displacement vibration sensor according to claim 2, wherein, The rear shell is an irregular structure. A second positioning hole and a plurality of first installation holes are provided on the back surface of the rear shell. The second positioning hole is used to position the main control board installed on the rear shell. The first installation holes are used to install the displacement and vibration sensor at the installation position. A plurality of installation cylinders and connection bumps are provided on the inner wall surface of the rear shell. The installation cylinders install the main control board on the rear shell through fixing parts. The connection bumps cooperate with the installation grooves on the front shell so that the rear shell is connected to the front shell.

4. The displacement vibration sensor according to claim 3, wherein The main control board is provided with a plurality of second installation holes, and the second installation holes are used to connect with fixing parts to fix the main control board on the rear shell.

5. The displacement vibration sensor according to claim 3, characterized in that, The main control board is also provided with a signal lamp unit and a power - on key unit. The signal lamp unit, the power - on key unit, the displacement detection unit, and the ultrasonic detection unit are respectively electrically connected to the main control board through connection lines. The signal lamp unit is provided with a signal lamp, and the signal lamp is positioned at the first positioning hole of the front shell.

6. The displacement vibration sensor according to claim 3, wherein, The anti - tamper switch is provided with a connection part and an installation part. The installation part is installed on the main control board and is electrically connected to the main control board. The connection part is connected to the front shell. After the front shell and the rear shell are separated, the connection part of the anti - tamper switch is disconnected from the inner wall surface of the front shell to generate an electrical signal and transmit the generated electrical signal to the main control board.

7. The displacement vibration sensor according to claim 1, wherein The adjustment switch is electrically connected to the main control board, and the adjustment switch adjusts the signal intensity of the displacement detection unit to facilitate adjusting the displacement detection sensitivity threshold.

8. The displacement vibration sensor according to claim 5, characterized in that The main control component also includes a wiring part, which is installed on the main control board, and the wiring part is used to fix the connection lines connected to the main control board.

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