Bluetooth positioning device of directional antenna

Abstract

The utility model discloses a Bluetooth positioning device of a directional antenna, which comprises a bottom cover with an open upper end part; the upper end surface of the microstrip directional antenna is provided with an antenna feeder contact and a reference ground contact, and the microstrip directional antenna is arranged at the bottommost layer of the bottom cover; the lower end face of the control board is provided with a first contact elastic piece and a second contact elastic piece which are matched with the antenna feeder contact and the reference ground contact respectively, and the control board is stacked above the microstrip directional antenna; a power supply unit stacked above the control board; and the upper cover is detachably mounted at the upper end part of the bottom cover. The beneficial effects of the utility model are that the microstrip directional antenna, the control panel and the power supply unit are vertically stacked in the bottom cover and sealed by the upper cover, the microstrip directional antenna is thin, and the control panel adjacent to the microstrip directional antenna is mutually coupled through the elastic sheet and the contact, so that the volume of the device can be effectively reduced, and the size of the device is reduced. And meanwhile, the assembly is also convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to antenna technical field especially relates to a directional antenna's bluetooth positioning device. BACKGROUND

[0002] The bluetooth positioning beacon device is often used in indoor positioning navigation scene, and the bluetooth positioning beacon device periodically broadcasts signals containing specific information, and a mobile device measures received signal strength (RSSI), and the RSSI value can be used to estimate the approximate distance between the device and the beacon. The propagation of the bluetooth signal follows the path loss model, and the signal strength attenuates with the increase of the distance, and the bluetooth signal is prone to multi-path effect in the propagation process due to the environment, resulting in the problem of large RSSI signal fluctuation.

[0003] At present, most of the bluetooth positioning beacon devices use omnidirectional antennas, such as inverted F-type antennas, meander-line antennas, and ceramic antennas. Due to the 360-degree uniform radiation characteristics of the omnidirectional antenna, it may receive signals from multiple directions in a multi-path environment, including direct signals and reflected, refracted, and other multi-path signals. This characteristic makes the omnidirectional antenna more susceptible to interference in a complex multi-path environment, because the time and phase of signals arriving at the antenna from different paths may differ, resulting in interference when the signals are superimposed, leading to large RSSI fluctuation and low positioning accuracy.

[0004] To solve the problem of low positioning accuracy of omnidirectional antennas, the basic solution is to use directional antennas. However, the common directional antennas on the market are relatively large in size, so the bluetooth positioning beacon devices using directional antennas are generally large in size, which is not conducive to the miniaturization of the device. SUMMARY

[0005] To solve the above problems, the utility model provides a directional antenna's bluetooth positioning device, which aims to reduce the size of the bluetooth positioning beacon device.

[0006] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0007] A directional antenna's bluetooth positioning device, comprising:

[0008] A bottom cover with an open upper end;

[0009] A microstrip directional antenna with an antenna feed line contact and a reference ground contact on its upper surface, and placed at the bottom layer of the bottom cover;

[0010] A control board with a first contact spring and a second contact spring respectively matched with the antenna feed line contact and the reference ground contact on its lower surface, and stacked above the microstrip directional antenna;

[0011] a power supply unit, stacked above the control board;

[0012] The upper cover is detachably mounted on the upper end portion of the bottom cover.

[0013] In some embodiments, a fixing column is provided on an inner side of the bottom cover, and first avoidance grooves corresponding to the fixing column are respectively provided on sides of the microstrip directional antenna and the control board.

[0014] In some embodiments, an anti-fool-proofing column is provided on the inner side of the bottom cover, and a second avoidance groove corresponding to the anti-fool-proofing column is provided on the side of the microstrip directional antenna.

[0015] In some embodiments, a third avoidance groove is provided on the side of the microstrip directional antenna for avoiding the anti-foolproof column.

[0016] In some embodiments, the power supply unit includes a battery holder and a battery installed in the battery holder, and fixing ears corresponding to the fixing columns are provided on both sides of the battery holder, wherein a fixing foot is provided at the bottom of the battery holder, and the fixing foot passes through the third avoidance groove and rests on the upper end surface of the microstrip directional antenna.

[0017] In some embodiments, a plurality of evenly distributed height-limiting columns are provided on the inner bottom edge of the bottom cover.

[0018] In some embodiments, an outer thread is provided on an edge of the upper port of the bottom cover, and an inner side of the upper cover is provided with an inner thread matching the outer thread.

[0019] The beneficial effects of the present invention are as follows: by vertically stacking the microstrip directional antenna, the control board, and the power supply unit in the bottom cover and sealing them with the upper cover, wherein the microstrip directional antenna is relatively thin, and the control board arranged adjacent to the microstrip directional antenna is coupled with each other through spring clips and contacts, the volume of the device can be effectively compressed, and assembly is also facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The explosion of the Bluetooth positioning device with directional antenna disclosed in the embodiment of the utility model Figure 1 ;

[0021] Figure 2 The explosion of the Bluetooth positioning device with directional antenna disclosed in the embodiment of the utility model Figure 2 ;

[0022] Wherein: 1 - bottom cover, 2 - microstrip directional antenna, 3 - control board, 4 - power supply unit, 5 - upper cover, 101 - fixed column, 102 - foolproof column, 103 - height limiting column, 201 - antenna feed line contact, 202 - reference ground contact, 203 - first avoiding slot, 204 - second avoiding slot, 301 - first contact spring, 302 - second contact spring, 303 - first avoiding slot, 304 - third avoiding slot, 401 - battery holder, 402 - battery, 403 - fixing lug, 404 - fixing foot. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantages of the present application more clear and definite, the content of the present application will be further described in detail below in combination with the drawings and specific embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the contents.

[0024] The present embodiment proposes a Bluetooth positioning device of directional antenna, as shown in Figure 1 and 2 , comprising:

[0025] The bottom cover 1 has an open upper end;

[0026] The microstrip directional antenna 2 is disposed on the bottom layer of the bottom cover 1, and the upper end surface of the microstrip directional antenna 2 is provided with an antenna feed line contact 201 and a reference ground contact 202;

[0027] The control board 3 is stacked above the microstrip directional antenna 2, and the lower end surface of the control board 3 is provided with a first contact spring 301 and a second contact spring 302 matched with the antenna feed line contact 201 and the reference ground contact 202, respectively;

[0028] The power supply unit 4 is stacked above the control board 3;

[0029] The upper cover 5 is detachably mounted on the upper end of the bottom cover 1.

[0030] In the present embodiment, the microstrip directional antenna 2, the control board 3, and the power supply unit 4 are vertically stacked in the bottom cover 1, and the upper cover 5 is used for closing, wherein the microstrip directional antenna 2 is relatively thin, and the control board 3 adjacent to the microstrip directional antenna 2 is coupled with each other through the spring and the contact, so that the volume of the device can be effectively compressed, and the assembly is also facilitated.

[0031] In an optional embodiment, the bottom cover 1 is provided in a circular shape, and correspondingly, the microstrip directional antenna 2 and the control board 3 are also provided in a circular shape according to the shape of the bottom cover 1. The inner side of the bottom cover 1 is provided with a fixing column 101, and the side of the microstrip directional antenna 2 and the control board 3 is respectively provided with a first avoiding slot 203, 303 corresponding to the fixing column 101. The fixing column 101 can be provided as a pair of mirror-symmetrical threaded mounting columns. After the microstrip directional antenna 2 and the control board 3 are embedded into the bottom cover 1 along the fixing column 101 through the first avoiding slots 203, 303, the fixing column 101 can prevent the microstrip directional antenna 2 and the control board 3 from being displaced by rotation, thereby ensuring stable installation.

[0032] Considering that the antenna feed line contact 201 and the reference ground contact 202 need to correspond to the first contact spring 301 and the second contact spring 302, and the fixing column 101 is a pair of mirror-symmetrical columns, there is a risk of misassembly. Further, the inner side of the bottom cover 1 is provided with and only one fool-proof column 102, the side of the microstrip directional antenna 2 is provided with a second avoiding slot 204 corresponding to the fool-proof column 102, and the side of the microstrip directional antenna 2 is provided with a third avoiding slot 304 for avoiding the fool-proof column 102. Specifically, the fool-proof column 102 can be provided as a vertical sheet, and correspondingly, the second avoiding slot 204 and the third avoiding slot 304 should be provided in corresponding sizes according to the projection of the fool-proof column 102 in the horizontal plane, so as to ensure that the contacts and the springs correspond to each other in the vertical direction after installation.

[0033] The above-mentioned power supply unit 4 can be any energy storage unit. In the present embodiment, a replaceable alkaline dry battery is taken as an example. In an example, the power supply unit 4 includes a battery holder 401 and a battery 402 installed in the battery holder 401. The two sides of the battery holder 401 are provided with fixing ears 403 corresponding to the fixing column 101. The bottom of the battery holder 401 is provided with a fixing foot 404, which abuts against the upper end surface of the microstrip directional antenna 2 after passing through the third avoiding slot 304. In the above scheme, a battery holder 401 is provided for loading the battery 402, and the two sides of the battery holder 401 are provided with fixing ears 403, which can be fixed with the fixing column 101. On this basis, the bottom of the battery holder 401 is provided with a fixing foot 404, which is limited by the third avoiding slot 304 to prevent the battery holder 401 from rotating, and the bottom surface of the battery holder 401 tightly presses the control board 3, which can ensure that the contacts and the springs are in close contact. In addition, the fixing foot 404 abuts against the upper end surface of the microstrip directional antenna 2 after passing through the third avoiding slot 304, which can also support a certain space to avoid the microstrip directional antenna 2 and the control board 3 being too close to each other, thereby preventing the first contact spring 301 and the second contact spring 302 from being excessively compressed.

[0034] Optionally, the inner bottom edge of the bottom cover 1 is provided with a plurality of evenly distributed height limiting columns 103, which assist the microstrip directional antenna 2 to be placed flat on the bottom of the bottom cover 1.

[0035] In yet another optional solution, the upper end edge of the bottom cover 1 is provided with external threads, and the inner side of the upper cover 5 is provided with internal threads matching the external threads.

[0036] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A Bluetooth positioning device with a directional antenna, characterized in that: include: a bottom cover, the upper end of which is open; A microstrip directional antenna, the upper end surface of which is provided with an antenna feeder contact and a reference ground contact and is placed at the bottom layer of the bottom cover; A control board, the lower end surface of which is provided with a first contact spring and a second contact spring that match the antenna feeder contact and the reference ground contact respectively, and is stacked above the microstrip directional antenna; a power supply unit, stacked above the control board; The upper cover is detachably mounted on the upper end portion of the bottom cover.

2. The directional antenna Bluetooth positioning device according to claim 1, characterized in that: The inner side of the bottom cover is provided with a fixing column, and the sides of the microstrip directional antenna and the control board are respectively provided with a first avoidance groove corresponding to the fixing column.

3. The Bluetooth positioning device with a directional antenna as claimed in claim 2, characterized in that: An anti-fool-proof column is provided on the inner side of the bottom cover, and a second avoidance groove corresponding to the anti-fool-proof column is provided on the side of the microstrip directional antenna.

4. The Bluetooth positioning device with a directional antenna as claimed in claim 3, characterized in that: The side of the microstrip directional antenna is provided with a third avoidance groove for avoiding the anti-fool column.

5. The directional antenna Bluetooth positioning device according to claim 4, characterized in that: The power supply unit includes a battery holder and a battery installed in the battery holder. Fixing ears corresponding to the fixing columns are provided on both sides of the battery holder, wherein a fixing foot is provided at the bottom of the battery holder, and the fixing foot passes through the third avoidance groove and abuts against the upper end surface of the microstrip directional antenna.

6. The Bluetooth positioning device with a directional antenna according to claim 1, wherein: The inner bottom edge of the bottom cover is provided with a plurality of evenly distributed height-limiting columns.

7. The Bluetooth positioning device with a directional antenna according to claim 1, characterized in that: The edge of the upper port of the bottom cover is provided with an external thread, and the inner side of the upper cover is provided with an internal thread matching the external thread.

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