CN213600859U - Antenna on-off detection circuit, mobile unit and vehicle - Google Patents
Antenna on-off detection circuit, mobile unit and vehicle Download PDFInfo
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- CN213600859U CN213600859U CN202022585366.3U CN202022585366U CN213600859U CN 213600859 U CN213600859 U CN 213600859U CN 202022585366 U CN202022585366 U CN 202022585366U CN 213600859 U CN213600859 U CN 213600859U
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Abstract
The embodiment of the utility model provides an antenna break-make detection circuitry, mobile unit and vehicle is related to, wherein, antenna break-make detection circuitry includes: the first resistor is positioned in the antenna module, the first end of the first resistor is connected with the signal output port of the antenna module, and the second end of the first resistor is connected with the ground port of the antenna module; the first end of the second resistor is connected with the signal output port of the antenna module, and the second end of the second resistor is connected with the power supply; when the voltage value of the first end of the first resistor is at a high level, the antenna module is in a disconnected state; when the voltage value of the first end of the first resistor is at a low level, the antenna module is in a conducting state. The circuit has the characteristics of simple structure, easiness in realization and low cost.
Description
Technical Field
The utility model relates to the field of communication technology, especially, relate to an antenna break-make detection circuitry, mobile unit and vehicle.
Background
The vehicle-mounted T-BOX terminal is an important tool for realizing vehicle modernization management, and can realize a plurality of functions such as vehicle information intelligent input, data acquisition, remote control, remote diagnosis, remote upgrade and the like.
The vehicle-mounted T-BOX terminal transmits the read vehicle internal bus data to the remote terminal by using a wireless network, so that the vehicle management and the state detection are realized.
In the using process, the phenomenon that the networking signal is weakened or the networking is impossible often happens to the vehicle-mounted T-BOX terminal, and the reason for the phenomenon is mainly as follows: physical disconnection of the networking antenna and software operation exception. In order to quickly locate the cause of the fault, a method for detecting the state of the antenna is urgently needed.
Disclosure of Invention
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.
Therefore, the utility model aims at providing an antenna break-make detection circuitry, mobile unit and vehicle, this antenna break-make detection circuitry have the characteristics that realize simply, low cost.
In order to achieve the above object, a first aspect of the present invention discloses an antenna on-off detection circuit, including: first resistance, second resistance, power and antenna module, wherein:
the first resistor is positioned inside the antenna module, a first end of the first resistor is connected with a signal output port of the antenna module, and a second end of the first resistor is connected with a ground port of the antenna module;
a first end of the second resistor is connected with a signal output port of the antenna module, and a second end of the second resistor is connected with the power supply;
when the voltage value of the first end of the first resistor is at a high level, the antenna module is in a disconnected state; when the voltage value of the first end of the first resistor is low level, the antenna module is in a conducting state.
Further, the antenna on-off detection circuit further includes:
and the A/D converter is connected with the first end of the first resistor.
Further, the antenna on-off detection circuit further comprises:
and the magnetic beads are respectively connected between the first end of the first resistor and the first end of the second resistor and in a circuit between the first end of the first resistor and the input end of the A/D converter.
Further, the antenna on-off detection circuit further comprises:
a first capacitor connected in circuit between the signal output port of the antenna module and the input port of the corresponding signal processing module.
Further, the antenna on-off detection circuit further comprises:
the first end of the second capacitor is connected with the first end of the first capacitor, and the second end of the second capacitor is grounded; and the first end of the third capacitor is connected with the second end of the first capacitor, and the second end of the third capacitor is grounded.
Further, the signal processing module is a Global Positioning System (GPS) module or a General Packet Radio Service (GPRS) module.
Further, the antenna on-off detection circuit further comprises:
and the first end of the diode is connected with the first end of the first resistor, and the second end of the diode is grounded.
The second aspect of the utility model discloses an on-vehicle equipment is equipped with according to foretell first aspect antenna break-make detection circuitry.
The third aspect of the present invention discloses a vehicle provided with an antenna on/off detection circuit according to the first aspect.
The utility model discloses an antenna break-make detection circuitry, mobile unit and vehicle utilizes first resistance, second resistance and power to constitute the return circuit, through the magnitude of voltage of the inside first resistance of detection antenna module, obtains switching on or the off-state of antenna module. The utility model discloses an antenna break-make detection circuitry has circuit structure simply, easily realizes, low cost's advantage.
Drawings
Fig. 1 is a circuit diagram of an antenna on-off detection circuit according to an embodiment of the present invention;
fig. 2 is a circuit diagram of an antenna on-off detection circuit according to an embodiment of the present invention.
Description of the drawings: 101. an antenna module; 102. an A/D converter; 103. a signal processing module; 1. an output pin of the antenna module; 2-5, and a ground pin of the antenna module.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The following describes antenna break-make detection circuit, mobile unit and vehicle according to the embodiment of the present invention with reference to the drawings.
Fig. 1 is a block diagram of an antenna on/off detection circuit according to an embodiment of the present invention. As shown in fig. 1, a switching power supply according to an embodiment of the present invention includes:
a first resistor R1, a second resistor R2, a power supply VDD, and the antenna module 101.
The first resistor R1 is located inside the antenna module 101, a first end of the first resistor R1 is connected to the output pin 1 of the antenna module 101, and a second end of the first resistor R1 is connected to the ground pin 5 of the antenna module 101;
a first end of the second resistor R2 is connected to the output pin 1 of the antenna module 101, and a second end of the second resistor R2 is connected to the power supply VDD;
when the voltage value of the first end of the first resistor R1 is at a high level, the antenna module 101 is in an off state; when the voltage value of the first end of the first resistor R1 is low, the antenna module 101 is in an on state.
Specifically, the power supply VDD, the first resistor R1, and the second resistor R2 form a detection circuit, and when the antenna module 101 is in a conducting state, since the second end of the first resistor R1 is connected to the ground pin 5 of the antenna module 101, pins 2-5 of the antenna module 101 are all ground pins and are commonly grounded. At this time, the second end of the first resistor R1 will be grounded; when the antenna module 101 is in the off state, the second terminal of the first resistor R1 inside the antenna module 101 will be disconnected from ground. Since the antenna module 101 is in the on or off state, the first resistor R1 therein is in the ground and off states, respectively, so that the electrical state of the first end of the first resistor R1 in the detection circuit loop will change accordingly. With such a correspondence, the present embodiment can obtain the on state or the off state of the antenna module 101 by detecting the voltage value of the first terminal of the first resistor R1. Specifically, when the antenna module 101 is in the on state, the second end of the first resistor R1 inside the antenna module 101 is grounded, and at this time, the detection circuit forms a loop, and the voltage value of the first end of the first resistor R1 is at a low level; when the antenna module 101 is in the off state, the second end of the first resistor R1 inside the antenna module 101 is in the floating state, at this time, the detection circuit is in the open state, and the voltage value of the first end of the first resistor R1 is at a high level.
According to the utility model discloses antenna break-make detection circuitry, only through the magnitude of voltage that detects antenna module internal resistance, alright obtain antenna module's the on or off state. The method has the characteristics of simple circuit result, easiness in realization and low cost, and is favorable for accurately positioning the networking fault of the vehicle-mounted equipment.
Optionally, in order to facilitate determining a voltage value of the first end of the first resistor R1 inside the antenna module 101, the embodiment of the present invention employs an a/D converter 102 connected to the first end of the first resistor R1.
Specifically, as shown in fig. 1, the voltage value of the first end of the first resistor R1 is an analog quantity, and in order to facilitate the analysis of the voltage value of the first end of the first resistor R1, the analog quantity input terminal of the a/D converter 102 is connected to the first end of the first resistor R1 for collecting the analog voltage value of the first end of the first resistor R1, and the a/D converter 102 converts the collected analog voltage value of the first end of the first resistor R1 into a corresponding digital quantity. Specifically, when the acquired analog voltage value of the first end of the first resistor R1 is higher, the digital value obtained by the a/D converter 102 through the corresponding conversion is larger; conversely, when the acquired analog voltage value of the first end of the first resistor R1 is lower, the corresponding digital value is smaller. The a/D converter 102 may obtain a corresponding digital value according to the collected analog voltage value of the first end of the first resistor R1, and transmit the digital value to a digital controller, such as a single chip microcomputer MCU, a digital signal processor DSP, or the like, where the digital controller may determine the voltage value of the first end of the first resistor R1 by the digital value output by the a/D converter 102.
According to the utility model discloses antenna break-make detection circuitry utilizes the AD converter to convert first resistance R1 analog voltage value into the digital quantity, can accurately judge the magnitude of voltage of antenna module internal resistance.
The embodiment of the utility model provides a still include an antenna break-make detection circuitry, as shown in FIG. 2, include: a first resistor R1, a second resistor R2 and a power supply VDD. When the voltage value of the first end of the first resistor R1 is at a high level, the antenna module 101 is in an off state; when the voltage value of the first end of the first resistor R1 is low, the antenna module 101 is in an on state. For a detailed explanation of the foregoing features, reference may be made to the foregoing embodiments, which are not described in detail herein.
Optionally, in order to further improve the robustness of the voltage detection of the internal resistor of the antenna module, the embodiment of the present invention provides that the magnetic bead is respectively connected between the first end of the first resistor and the first end of the second resistor, and in the circuit between the first end of the first resistor and the input end of the a/D converter.
Specifically, as shown in fig. 1, in order to avoid the influence of the networking signal output by the antenna module 101 on the power supply VDD and the digital controller, the first resistor R1 and the second resistor R2, and the first resistor R1 and the a/D converter 102 are connected through the magnetic bead L1, so that the isolation among the first resistor R1, the second resistor R2 and the a/D converter 102 is realized.
According to the utility model discloses antenna break-make detection circuitry can shield the interference of antenna module networking signal, improves the accuracy of gathering voltage.
Optionally, in order to realize stable transmission of antenna networking signals, the reliability of the networking signals is ensured. The embodiment comprises the following steps: a first capacitor C1, the first capacitor C1 being connected in circuit between the output pin 1 of the antenna module 101 and the input of the corresponding signal processing module.
Specifically, as shown in fig. 2, in order to avoid direct current voltage in the line from directly flowing into the signal processing module 103, in this embodiment, the first capacitor C1 is respectively connected to the output pin 1 of the antenna module 101 and the input port of the corresponding signal processing module 103, where the capacitance value of the first capacitor C1 is 27pF, so as to avoid the direct current voltage in the line from damaging the signal processing module 103, where the signal processing module 103 may be a GPS module or a GPRS module. Optionally, in order to eliminate interference on the output line of the antenna module 101, a second capacitor C2 and a third capacitor C3 are respectively disposed at two ends of the first capacitor C1, and the capacitance value may be adjusted according to an actual situation, which is not specifically limited in this embodiment. In order to prevent the output pin 1 of the antenna module 101 from being damaged due to the overhigh voltage, a zener diode D1 is connected between the output pin 1 of the antenna module 101 and the ground, and when the voltage of the output pin 1 of the antenna module 101 is overhigh, the zener diode D1 is turned on to play a role in overvoltage protection.
An embodiment of the utility model discloses a mobile unit, include: the antenna on-off detection circuit according to any one of the above embodiments. According to the antenna on-off detection circuit in the vehicle-mounted equipment, the on-off state of the antenna module can be obtained only by detecting the voltage value of the internal resistor of the antenna module. The vehicle-mounted equipment of the embodiment has the characteristics of easiness in realization and low cost, and is favorable for accurately positioning the networking fault of the vehicle-mounted equipment.
An embodiment of the utility model discloses a vehicle is equipped with the antenna break-make detection circuitry according to any one of above-mentioned embodiments.
The antenna on-off detection circuit adopted by the vehicle has the characteristics of easiness in realization and low cost, and is favorable for accurately positioning networking faults of vehicle-mounted equipment.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of the technical solutions should be covered by the scope of the claims of the present invention.
Claims (9)
1. An antenna on-off detection circuit, comprising: first resistance, second resistance, power and antenna module, wherein:
the first resistor is positioned in the antenna module, a first end of the first resistor is connected with a signal output end of the antenna module, and a second end of the first resistor is connected with a ground end of the antenna module;
the first end of the second resistor is connected with the signal output end of the antenna module, and the second end of the second resistor is connected with the power supply;
when the voltage value of the first end of the first resistor is at a high level, the antenna module is in a disconnected state; when the voltage value of the first end of the first resistor is low level, the antenna module is in a conducting state.
2. The on-off antenna detection circuit according to claim 1, further comprising:
and the A/D converter is connected with the first end of the first resistor.
3. The on-off antenna detection circuit according to claim 2, further comprising:
and the magnetic beads are respectively connected between the first end of the first resistor and the first end of the second resistor and in a circuit between the first end of the first resistor and the input end of the A/D converter.
4. The on-off antenna detection circuit according to claim 1, further comprising:
and the first capacitor is connected in a circuit between the signal output end of the antenna module and the input end of the corresponding signal processing module.
5. The on-off antenna detection circuit according to claim 4, further comprising:
the first end of the second capacitor is connected with the first end of the first capacitor, and the second end of the second capacitor is grounded; and the first end of the third capacitor is connected with the second end of the first capacitor, and the second end of the third capacitor is grounded.
6. The on-off antenna detection circuit according to claim 4, wherein the signal processing module is a Global Positioning System (GPS) module or a General Packet Radio Service (GPRS) module.
7. The on-off antenna detection circuit according to claim 1, further comprising:
and the first end of the diode is connected with the first end of the first resistor, and the second end of the diode is grounded.
8. An in-vehicle apparatus, characterized by comprising: the antenna on-off detection circuit according to any of claims 1-7.
9. A vehicle characterized by being provided with an on-off antenna detection circuit according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022585366.3U CN213600859U (en) | 2020-11-10 | 2020-11-10 | Antenna on-off detection circuit, mobile unit and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022585366.3U CN213600859U (en) | 2020-11-10 | 2020-11-10 | Antenna on-off detection circuit, mobile unit and vehicle |
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| CN213600859U true CN213600859U (en) | 2021-07-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116298556A (en) * | 2023-05-22 | 2023-06-23 | 荣耀终端有限公司 | Detection method and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116298556A (en) * | 2023-05-22 | 2023-06-23 | 荣耀终端有限公司 | Detection method and electronic equipment |
| CN116298556B (en) * | 2023-05-22 | 2023-09-29 | 荣耀终端有限公司 | Detection method and electronic equipment |
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