CN117353019A - Antenna devices and base stations - Google Patents

Abstract

The present application provides an antenna device and a base station. The antenna device includes an antenna unit; a circuit board electrically connected to the antenna unit; the circuit board has a detection position; and a water leakage detection unit located on the detection position. The water leakage detection unit includes a sampling sensor, and the sampling sensor is used to detect the impedance between the detection position and the earth to determine whether water leakage occurs in the antenna device. Through this application, the problem of high cost of water leakage detection of the antenna device is solved.

Description

Antenna devices and base stations

Technical field

The present application relates to the field of antenna technology, specifically, to an antenna device and a base station.

Background technique

The function of the active antenna is to connect with the base station unit and convert the digital signal of the base station into the radio frequency signal of the receiver. It integrates a receiving antenna module, a low-noise amplifier module, and a power supply module. The environmental detection of the antenna device, especially the detection of whether the antenna device is leaking, has great practical significance for the stability and reliability of the base station in the field of base stations.

In related technologies, for water leakage detection of antenna devices, a special detection cable is usually provided for the water leakage detection circuit, and then a detection alarm is reported through a dry contact. As a result, the cost of detecting water leakage in the antenna device is high.

Contents of the invention

Embodiments of the present application provide an antenna device and a base station to at least solve the technical problem of high cost in water leakage detection of antenna devices in related technologies.

In a first aspect, this application provides an antenna device, including: an antenna unit; a circuit board electrically connected to the antenna unit; the circuit board has a detection position; a water leakage detection unit located on the detection position; the water leakage detection unit includes a sampling sensor, The sampling sensor is used to detect the impedance between the detection position and the earth to determine whether there is water leakage in the antenna device.

In a second aspect, this application also provides a base station, including the antenna device as described above.

According to the antenna device and base station provided by this application, the antenna device includes: an antenna unit; a circuit board electrically connected to the antenna unit; the circuit board has a detection position; a water leakage detection unit located on the detection position; the water leakage detection unit includes a sampling sensor, The sampling sensor is used to detect the impedance between the detection position and the earth to determine whether there is water leakage in the antenna device. The technical solution of this application is to optimize the specific structure of the antenna device and set the water leakage detection unit for water leakage detection inside the antenna device to avoid the use of cables in the antenna water leakage detection operation and help reduce the cost of the antenna device. cost and realize the miniaturization process of the antenna device. Specifically, the antenna device is configured as a combined component including at least an antenna unit, a circuit board, and a water leakage detection unit, and the water leakage detection unit is provided on the circuit board. The water leakage detection unit includes a sampling sensor. The sampling sensor is used to detect the impedance between the detection position and the earth. After the detection sensor contacts water, the detected impedance decreases. At this time, it is determined that the antenna device is leaking. In this way, by integrating the water leakage detection unit onto the circuit board, no additional space is occupied and the weight of the entire machine is less affected; at the same time, the layout of the antenna device is made more flexible and the detection sensitivity is high.

Description of drawings

The drawings described here are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the attached picture:

Figure 1 is an exploded view of the antenna device provided by this application;

Figure 2 is a circuit diagram of the antenna device provided by this application.

Explanation of reference symbols:

100. Antenna unit;

200. Circuit board; 210. Main control unit; 220. Comparator unit; 221. Comparator; R4, fourth resistor; R5, fifth resistor;

300. Water leakage detection unit; 310. Sampling sensor; R1, first resistor; R2, second resistor; Rx, detection resistor; R3, third resistor; C1, first capacitor;

400. Chassis; 410. Bottom shell; 420. Shell cover;

500. Shielding parts.

Detailed ways

The present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other.

It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

At present, the water leakage detection operation of the antenna device is generally implemented by using a special detection cable equipped with a water leakage detection circuit, and then the detection alarm is reported through the dry contact. In related technologies, if a special cable is directly integrated into the antenna device, on the one hand, the consistency of the impedance of the special cable is difficult to control, which will cause false alarms of water leakage; on the other hand, it will cause the active antenna to The high board layout density increases the difficulty of designing active antenna single boards. At the same time, integrating special cables into the interior of the antenna device requires additional wiring space, and the layout position is limited, which increases the weight and production cost of the antenna device. Therefore, it is imperative to find an antenna device with simple structure, low cost and good water leakage detection effect.

Based on this, in the first aspect, referring to FIG. 1 and FIG. 2 , an embodiment of the present application provides an antenna device, including: an antenna unit 100 , a circuit board 200 and a water leakage detection unit 300 .

The circuit board 200 is electrically connected to the antenna unit 100, and the circuit board 200 has a detection position;

The water leakage detection unit 300 is located at the detection position. The water leakage detection unit 300 includes a sampling sensor 310. The sampling sensor 310 is used to detect the impedance between the detection position and the earth to determine whether water leakage occurs in the antenna device.

In this embodiment, the specific structure of the antenna device is optimized so that the water leakage detection unit 300 for detecting water leakage is disposed inside the antenna device. This avoids the need for external wiring cables for traditional antenna devices to perform water leakage detection operations, effectively reducing the number of leaks. The space occupied by the antenna device is reduced, and miniaturized production of the antenna device is realized. Moreover, the water leakage detection unit 300 is integrated into the circuit board 200, so that the consistency between the water leakage detection unit 300 and the circuit board 200 is good and the detection sensitivity is high.

Specifically, the antenna device is configured as a combined member including at least the antenna unit 100, the circuit board 200, and the water leakage detection unit 300. The antenna unit 100 is electrically connected to the circuit board 200 to control the antenna unit 100 through the circuit board 200; the water leakage detection unit 300 is connected to the detection position to integrate the water leakage detection unit 300 onto the circuit board 200 to save space. space. The water leakage detection unit 300 includes a sampling sensor 310 to detect the impedance between the detection position and the ground through the sampling sensor 310, thereby realizing water leakage detection of the antenna device. Specifically, when the sampling sensor 310 comes into contact with water, the impedance detected by the water leakage detection unit 300 will decrease. At this time, it is judged that there is water leakage in the antenna device based on the reduced impedance value; when the sampling sensor 310 does not come into contact with water , the impedance value detected by the water leakage detection unit 300 is large.

For example, but not limited to, the water leakage detection unit 300 is configured in a size of 5*5mm on the circuit board 200, so as to save the occupied area. Of course, in other embodiments, multiple detection bits can be provided, and multiple water leakage detection units 300 can also be provided. One water leakage detection unit 300 is set corresponding to one detection bit. In this way, the antenna device can be implemented to detect water leakage at different locations, thereby Improve the accuracy and sensitivity of water leakage detection in antenna devices. At this time, the water leakage detection unit 300 is configured on the circuit board 200 with a size of 1.6*1.6mm. In other embodiments, other areas can also be used, and the area size is not limited here.

For example, but not limited to, the sampling sensor 310 is a water leakage sensor. The circuit board 200 is a rigid printed circuit board.

In a possible implementation, the water leakage detection unit 300 has a first port and a second port, and the circuit board 200 includes:

The main control unit 210 is used to provide voltage, and the main control unit 210 is connected to the first port;

The comparator unit 220 has a third port and a fourth port, the third port is connected to the main control unit 210, and the fourth port is connected to the second port.

In this embodiment, the specific structure of the circuit board 200 is optimized. Specifically, a main control unit 210 and a comparator unit 220 are configured on the circuit board 200. The main control unit 210 is used to control the daily operation of the antenna device, and the comparator unit 220 is used to work together with the water leakage detection unit 300. To achieve water leakage detection of the antenna device.

Specifically, the main control unit 210 is used to provide voltage to the water leakage detection unit 300 and the comparator unit 220 so that the water leakage detection unit 300 and the comparator unit 220 can operate normally. The output terminal of the water leakage detection unit 300 is connected to the input detection voltage terminal (INA- terminal) of the comparison sensor, that is, the second port is connected to the fourth port. In this way, the impedance (voltage) detected by the water leakage detection unit 300 is transmitted to the comparison sensor. The output terminal (OUTA terminal) of the comparison sensor is connected to the main control unit 210, that is, the third port is connected to the main control unit 210. In this way, the signal converted by the comparison sensor is transmitted to the main control unit 210, and then the main control unit 210 is connected to the main control unit 210. The control unit 210 determines whether the antenna device is in a water leakage state based on the received signal.

Specifically, when the main control unit 210 receives a low-level voltage, it is determined that the antenna device is in a non-leakage state. When the main control unit 210 receives a high-level voltage, it determines that the antenna device is in a water leakage state; at this time, the operator can be reminded to perform maintenance, or the water leakage detection unit 300 can be controlled to be in a power-off state to prevent the sampling sensor 310 The electrolytic polarization fails, so that the sampling sensor 310 can be used repeatedly, reducing the cost of use. At the same time, the anti-interference ability and applicable scope of water leakage detection can be effectively improved by determining the voltage difference.

Referring to Figure 2, in a possible implementation, the circuit of the water leakage detection unit 300 includes:

a first resistor R1, one end of the first resistor R1 is connected to the main control unit 210, and the other end of the first resistor R1 is connected to the fourth port;

second resistor R2, one end of the second resistor R2 is connected to the fourth port, and the other end of the second resistor R2 is connected to the ground;

Detection resistor Rx, one end of the detection resistor Rx is connected to the fourth port, and the other end of the detection resistor Rx is connected to the ground.

In this embodiment, the water leakage detection unit 300 is configured. Specifically, a first resistor R1, a second resistor R2 and a detection resistor Rx are provided. The detection resistor Rx and the second resistor R2 are connected in parallel between the ground and the first resistor R1. The first resistor R1 and the parallel detection resistor Rx and the second resistor R2 are connected in series between the ground and the main control unit 210. Since the sampling sensor 310 contacts the water, it will be connected to the ground, causing the resistance of the detection resistor Rx to decrease. At this time, the voltage across the second resistor R2 decreases, the voltage transmitted by the water leakage detection unit 300 to the comparator unit 220 is lower than the reference voltage.

In a possible implementation, the detection resistor Rx includes:

Sampling sensor 310;

a third resistor R3, one end of the third resistor R3 is connected to the sampling sensor 310, and the other end of the third resistor R3 is connected to the fourth port;

The first capacitor C1 has one end connected to the fourth port, and the other end of the first capacitor C1 connected to the ground.

In this embodiment, the detection resistor Rx is optimized to reduce the risk of short circuit. Specifically, a sampling sensor 310 is configured, and the third resistor R3 is connected to the first capacitor C1. The sampling sensor 310 is connected in series with the third resistor R3 and then connected to the first capacitor C1 for filtering processing, and then enters the fourth port.

In a possible implementation, the circuit of the comparator unit 220 includes:

Comparator 221, having a comparator 221 input terminal;

The fourth resistor R4 has one end connected to the main control unit 210 and the other end of the fourth resistor R4 connected to the input end of the comparator 221;

The fifth resistor R5 has one end connected to the input end of the comparator 221 and the other end of the fifth resistor R5 connected to the ground.

In this embodiment, the comparator unit 220 is optimized to provide a reference voltage value. Specifically, a comparator 221, a fourth resistor R4 and a fifth resistor R5 are configured. The fourth resistor R4 and the fifth resistor R5 are connected in series between the ground and the main control unit 210, and between the fourth resistor R4 and the fifth resistor R5 A node is formed between the five resistors R5 to connect to the input terminal of the comparator 221 . The setting of this circuit provides a reference voltage value to the comparator 221. After the comparator 221 receives the voltage signal transmitted from the water leakage detection unit 300, it first compares the received voltage signal with the reference voltage value. If the difference is If the value is less than 0, a high-level voltage is output; if the difference is greater than 0, a low-level voltage is output.

In a possible implementation, the circuit board 200 is provided with a bright copper area, and the sampling sensor 310 is electrically connected to the bright copper area.

In this embodiment, the installation position of the sampling sensor 310 is optimized. In order to achieve good electrical contact between the sampling sensor 310 and the circuit board 200, a bright copper area is first provided on the circuit board 200, and then the sampling sensor 310 is directly connected to the bright copper area of the circuit board 200. For example, but not limited to, the sampling sensor 310 is welded to a bright copper area of the circuit board 200 .

In a possible implementation, the bright copper area is provided at the bottom of the circuit board 200 .

In this embodiment, the specific layout position of the bright copper area is optimized. Specifically, the bright copper area is disposed at the bottom of the circuit board 200, so that the sampling sensor 310 electrically connected in the bright copper area can be directly aimed at the water collection area of the antenna device (rainwater due to its own gravity function, gathered at the bottom of the antenna device), which is beneficial to improving the detection sensitivity of the sampling sensor 310. Of course, the bright copper area can also be disposed at other locations on the circuit board 200 to align with the corresponding water collection area and perform water leakage detection on the water collection area, thus achieving multi-site water leakage detection of the antenna device.

In a possible implementation, the antenna device further includes a casing 400, and the casing 400 has a receiving cavity;

The antenna unit 100 is connected to the casing 400, the circuit board 200 is connected to the casing 400, and the antenna unit 100, the circuit board 200 and the water leakage detection unit 300 are all located in the accommodation chamber.

In this embodiment, the specific structure of the antenna device is set. Specifically, a casing 400 with an accommodation cavity is also configured to accommodate and protect the antenna unit 100, the circuit board 200, and the water leakage detection unit 300.

In a possible implementation, the casing 400 includes a bottom case 410 and a cover 420. The bottom case 410 has an opening, and the cover 420 is used to cover the opening to form a gap between the bottom case 410 and the cover 420. accommodating chamber;

The antenna unit 100 is connected to the bottom case 410 toward the cover 420 . The circuit board 200 is disposed on a side of the antenna unit 100 away from the cover 420 . The circuit board 200 is connected to the bottom case 410 .

In this embodiment, the specific structure of the casing 400 is set. Specifically, the cabinet 400 is configured as a combined member including at least a bottom case 410 and a cover 420 . In order to improve the stability of the internal components of the antenna device, the antenna unit 100 and the circuit board 200 are both connected to the bottom case 410. At this time, the antenna unit 100 is disposed toward the cover 420.

Optionally, the periphery of the antenna unit 100 is connected to the periphery of the side wall of the bottom case 410 , and the periphery of the circuit board 200 is connected to the periphery of the side wall of the bottom case 410 . For example, but not limited to, the antenna unit 100 can be connected to the bottom case 410 through a buckle structure, or can be connected to the bottom case 410 through fasteners such as screws/bolts. The circuit board 200 can be connected to the bottom case 410 through adhesion, or can be connected to the bottom case 410 through a buckle structure.

Optionally, the casing 400 has a bottom, and the detection position of the circuit board 200 is set at the bottom of the casing 400. Since water will accumulate at the bottom of the casing 400, the detection position is set at the bottom of the casing 400. , which can effectively improve the water leakage detection sensitivity of the water leakage detection unit 300. Of course, the detection position can also be set close to other water collection areas.

For example, but not limited to, the bottom case 410 is a square frame with one end open, and the cover 420 is a square plate that can cover the open end of the square frame.

In a possible implementation, the antenna device further includes a shield 500 , the shield 500 is connected to the casing 400 , and the shield 500 is located between the antenna unit 100 and the circuit board 200 .

In this embodiment, the structure of the antenna device is set. Specifically, a shield 500 is disposed between the antenna unit 100 and the circuit board 200 to reduce interference from the external environment to the antenna device.

Optionally, the peripheral edge of the shielding member 500 is connected to the peripheral edge of the side wall of the bottom shell 410 . For example, but not limited to, the shield 500 can be connected to the side wall of the bottom case 410 through a buckle structure, or can be connected to the bottom case 410 through fasteners such as screws/bolts.

Of course, in other embodiments, one side edge of the shielding member 500 is connected to the side wall of the bottom case 410 , or both sides of the shielding member 500 are connected to the side walls of the bottom case 410 .

In a second aspect, this application also provides a base station, including the above antenna device. The specific structure of the antenna device refers to the above-mentioned embodiments. Since this base station adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described again here.

Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present application can be implemented using general-purpose computing devices, and they can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices. , optionally, they may be implemented in program code executable by a computing device, such that they may be stored in a storage device for execution by the computing device, and in some cases, may be in a sequence different from that herein. The steps shown or described are performed either individually as individual integrated circuit modules, or as multiple modules or steps among them as a single integrated circuit module. As such, the application is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles of this application shall be included in the protection scope of this application.

Claims (10)

1. An antenna device, characterized in that it includes: antenna unit; A circuit board electrically connected to the antenna unit, the circuit board having a detection position; A water leakage detection unit is provided on the detection position. The water leakage detection unit includes a sampling sensor. The sampling sensor is used to detect the impedance between the detection position and the earth to determine whether water leakage occurs in the antenna device. 2. The antenna device according to claim 1, wherein the water leakage detection unit has a first port and a second port, and the circuit board includes: A main control unit, used to provide voltage, and the main control unit is connected to the first port; The comparator unit has a third port and a fourth port, the third port is connected to the main control unit, and the fourth port is connected to the second port. 3. The antenna device according to claim 2, characterized in that the circuit of the water leakage detection unit includes: a first resistor, one end of the first resistor is connected to the main control unit, and the other end of the first resistor is connected to the fourth port; a second resistor, one end of the second resistor is connected to the fourth port, and the other end of the second resistor is connected to the ground; A detection resistor, one end of the detection resistor is connected to the fourth port, and the other end of the detection resistor is connected to the ground. 4. The antenna device according to claim 3, wherein the detection resistor includes: sampling sensor; a third resistor, one end of the third resistor is connected to the sampling sensor, and the other end of the third resistor is connected to the fourth port; A first capacitor, one end of the first capacitor is connected to the fourth port, and the other end of the first capacitor is connected to the ground. 5. The antenna device according to claim 4, wherein the circuit of the comparator unit includes: a comparator having a comparator input; a fourth resistor, one end of the fourth resistor is connected to the main control unit, and the other end of the fourth resistor is connected to the comparator input end; A fifth resistor, one end of the fifth resistor is connected to the input end of the comparator, and the other end of the fifth resistor is connected to the ground. 6. The antenna device according to any one of claims 1 to 5, wherein the circuit board is provided with a bright copper area, and the sampling sensor is electrically connected to the bright copper area. 7. The antenna device according to claim 6, wherein the bright copper area is provided at the bottom of the circuit board. 8. The antenna device according to any one of claims 1 to 5, characterized in that the antenna device further includes a casing, and the casing has a receiving chamber; The antenna unit is connected to the casing, the circuit board is connected to the casing, and the antenna unit, the circuit board and the water leakage detection unit are all located in the accommodation cavity. 9. The antenna device according to claim 8, wherein the antenna device further comprises a shielding member, the shielding member is connected to the casing, and the shielding member is located between the antenna unit and the circuit. between the boards. 10. A base station, characterized by comprising the antenna device according to any one of claims 1 to 9.