CN210491211U - Intelligent Bluetooth module of interphone - Google Patents
Intelligent Bluetooth module of interphone Download PDFInfo
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- CN210491211U CN210491211U CN201922139659.6U CN201922139659U CN210491211U CN 210491211 U CN210491211 U CN 210491211U CN 201922139659 U CN201922139659 U CN 201922139659U CN 210491211 U CN210491211 U CN 210491211U
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Abstract
The utility model discloses an intercom intelligence bluetooth module belongs to bluetooth equipment technical field, has solved bluetooth module and has used the reliability problem, and its technical scheme main points are including power source, power module and the bluetooth chip main part module that connects gradually, and power source is used for connecting external power source, and power module is used for converting the working power supply that electric power provided bluetooth chip main part module, is provided with the voltage sensor who is used for surveying power source between power source and the power module and is used for the control module of control scheme break-make protection, control module includes comparison module, switch drive, instantaneous relay and time delay relay and first diode, has reached the effect that improves life.
Description
Technical Field
The utility model relates to a bluetooth module hardware field relates to an intelligent bluetooth module for on intercom especially.
Background
Generally speaking, as shown in fig. 1, the hardware circuit boards of the main board MCU and the audio conversion module of the intercom are also connected to the main body module of the bluetooth chip through UART function pins, and the main body module of the bluetooth chip is connected to the audio decoding module through PCM/I2S, wherein the circuit board is powered by the power source interface to connect to the power source module to meet the requirement of working voltage, and the main body module of the bluetooth chip is connected to the multiple devices through bluetooth protocol to connect and communicate with each other, so as to connect and pair the general bluetooth headset, the bluetooth PTT low power consumption button module, the bluetooth of the mobile phone, and so on.
In the existing hardware power supply process, the faults of the Bluetooth chip main body module and other hardware modules are easily caused if the external power supply is unstable and fails.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's weak point, solve the technical problem in the correlation technique to a certain extent at least, provide an intercom intelligence bluetooth module to reach and improve power supply safety, effectively improve life's purpose.
In order to solve the technical problem, the technical scheme of the utility model is that: an intelligent Bluetooth module of an interphone comprises a power interface, a power module and a Bluetooth chip main body module which are sequentially connected, wherein the power interface is used for connecting an external power supply, the power module is used for converting electric power to provide a working power supply of the Bluetooth chip main body module, a voltage sensor used for detecting the power interface and a control module used for controlling on-off protection of a circuit are arranged between the power interface and the power module, and the control module comprises a comparison module, a switch driver, an instantaneous relay, a delay relay and a first diode;
the comparison module is connected with the voltage sensor and outputs a control signal under the condition of voltage overrun abnormality;
the switch drive is connected with the output end of the comparison module, the input end of the instantaneous relay and the input end of the delay relay, the normally closed switch of the instantaneous relay is connected in series on a circuit of a power interface, and the normally closed switch of the delay relay is connected in parallel on the normally closed switch of the instantaneous relay through a first diode arranged in the forward direction.
As a specific aspect of the present invention, it may be preferable that: the comparison module comprises a comparator and a reference regulator, wherein the non-inverting input end of the comparator is connected with the voltage sensor, and the inverting input end of the comparator is connected with the reference regulator.
As a specific aspect of the present invention, it may be preferable that: the reference regulator comprises an independent power supply, a potentiometer and a divider resistor, wherein the independent power supply is connected with the potentiometer and the divider resistor in series to be grounded, and a connection point between the potentiometer and the divider resistor is connected with the inverting end of the comparator.
As a specific aspect of the present invention, it may be preferable that: the switch driver comprises a first resistor, a second resistor, a triode and a second diode, one end of the first resistor is connected with the output end of the comparator, the other end of the first resistor is connected with the base of the triode and one end of the second resistor, the other end of the second resistor is connected with the emitting electrode and the grounding end of the triode, the collector electrode of the triode is connected with the anode of the second diode and is connected with the independent power supply, and the independent power supply is connected with the coil of the instantaneous relay and the coil of the time delay relay in series to the anode of the diode.
As a specific aspect of the present invention, it may be preferable that: the detection position of the voltage sensor is close to the power interface.
The utility model discloses technical effect mainly embodies in following aspect:
1. the power input process can be detected, and the Bluetooth chip main body module can be effectively protected;
2. the working process is reliable, when the power is connected, the working condition of the power can be detected, the circuit can be reliably cut off under the condition that the power supply voltage is abnormal, the Bluetooth chip main body module is protected, in addition, the probability of avoiding false triggering is also provided, and the reliability is improved.
Drawings
FIG. 1 is a block diagram of a related art structure;
FIG. 2 is a schematic structural diagram of an embodiment;
fig. 3 is a circuit diagram of a modified portion of the embodiment.
Reference numerals: 1. a power interface; 2. a power supply module; 3. a Bluetooth chip main body module; 4. a voltage sensor; 5. a control module; 51. a comparison module; 511. a comparator; 512. a reference regulator; 52. driving a switch; 53. an instantaneous relay; 54. a time delay relay; d01, a first diode; v1, independent power supply; r2, a potentiometer; r1, divider resistance; r01, a first resistor; r02, a second resistor; q01, triode; d02, a second diode.
Detailed Description
The embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the embodiments described below by referring to the drawings are exemplary and intended to explain the present invention so that the technical solutions of the present invention can be more easily understood and grasped, and cannot be construed as limiting the present invention.
Example (b):
an intelligent Bluetooth module of an interphone is seen by referring to a comparison between a figure 1 and a figure 2 and comprises a power interface 1, a power module 2 and a Bluetooth chip main body module 3 which are connected in sequence. Power source 1 is used for connecting external power source, and power module 2 is used for converting electric power and provides the working power supply of bluetooth chip main part module 3, is provided with voltage sensor 4 that is used for surveying power source 1 between power source 1 and power module 2 and is used for the control module 5 of control circuit break-make protection. The detection module in fig. 2 is embodied here as a voltage sensor 4. In addition, for the structural improvement part, detailed reference is made to fig. 3, and fig. 2 is a schematic block diagram of the general structure. The control module 5 comprises a comparison module 51, a switch drive 52, a momentary relay 53 and a time delay relay 54, and a first diode D01.
Referring to fig. 3, the comparing module 51 is connected to the voltage sensor 4 and outputs a control signal when the voltage exceeds the limit.
The switch driver 52 is connected to the output end of the comparison module 51, the input end of the instantaneous relay 53, and the input end of the delay relay 54, the normally closed switch of the instantaneous relay 53 is connected in series to the line of the power interface 1, and the normally closed switch of the delay relay 54 is connected in parallel to the normally closed switch of the instantaneous relay 53 through the first diode D01 arranged in the forward direction.
The comparator 511 module comprises a comparator 511 and a reference regulator 512, wherein the non-inverting input terminal of the comparator 511 is connected with the voltage sensor 4, and the inverting input terminal of the comparator 511 is connected with the reference regulator 512. The reference regulator 512 comprises an independent power supply V1, a potentiometer R2 and a voltage dividing resistor R1, wherein the independent power supply V1 is connected with the series potentiometer R2 and the voltage dividing resistor R1 to be grounded, and a connection point between the potentiometer R2 and the voltage dividing resistor R1 is connected with the inverting end of the comparator 511.
The switch driver 52 includes a first resistor R01, a second resistor R02, a triode Q01, and a second diode D02. One end of a first resistor R01 is connected with the output end of the comparator 511, the other end of the first resistor R01 is connected with the base of the triode and one end of a second resistor R02, the other end of the second resistor R02 is connected with the emitter and the ground of the triode, the collector of the triode is connected with the anode of a second diode D02 and is connected with an independent power supply V1, and the independent power supply V1 is connected with the coil of the instantaneous relay 53 and the coil of the time delay relay 54 in series to the anode of the diode.
It should be noted that, the description of the independent power source V1 in this embodiment specifically refers to a battery or an electronic device. Which provides a 6V voltage V1 or a 12V voltage source. The independent power supply V1 is also the key to the independent operation of the support controller, and is not affected by the outside. The power supply interface 1 can be normally powered by the independent power supply V1 to work under the power-on or power-off condition.
The specific working process is as follows: the power interface 1 and the power module 2 are normally switched on. The power supply module 2 is a DC-DC module, and functions to convert the power of the power supply interface 1. When the power of the power interface 1 is transmitted to the power module 2, the detection is performed by the voltage sensor 4, and at this time, the power is normally transmitted through the normally closed switch. When the voltage is abnormally high, the comparator 511 outputs high level to enable the triode to be conducted, so that the coil of the instantaneous relay 53 and the coil of the delay relay 54 are simultaneously electrified, the normally closed switch K1-1 of the instantaneous relay 53 is immediately switched off, and the normally closed switch KT1-1 of the delay relay 54 is switched off after delaying for several seconds. The above is the case for the voltage sensor 4 detecting the voltage abnormality time exceeding the delay time of the delay relay 54. In another case, the voltage abnormality is intermittent, and the voltage can be immediately recovered to normal, and the delay relay 54 acts to keep the line in an on state, and at this time, the detection of the voltage sensor 4 is real-time, and when the voltage abnormality is very short and the delay relay 54 is not actuated, and the transient relay 53 is reset again, the line is still kept on, so that false triggering and false operation are avoided, and the working reliability is improved.
Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.
Claims (5)
1. An intelligent Bluetooth module of an interphone comprises a power interface, a power module and a Bluetooth chip main body module which are sequentially connected, wherein the power interface is used for connecting an external power supply, the power module is used for converting electric power to provide a working power supply of the Bluetooth chip main body module;
the comparison module is connected with the voltage sensor and outputs a control signal under the condition of voltage overrun abnormality;
the switch drive is connected with the output end of the comparison module, the input end of the instantaneous relay and the input end of the delay relay, the normally closed switch of the instantaneous relay is connected in series on a circuit of a power interface, and the normally closed switch of the delay relay is connected in parallel on the normally closed switch of the instantaneous relay through a first diode arranged in the forward direction.
2. The intercom intelligent bluetooth module of claim 1, characterized in that: the comparison module comprises a comparator and a reference regulator, wherein the non-inverting input end of the comparator is connected with the voltage sensor, and the inverting input end of the comparator is connected with the reference regulator.
3. The intercom intelligent bluetooth module of claim 2, characterized in that: the reference regulator comprises an independent power supply, a potentiometer and a divider resistor, wherein the independent power supply is connected with the potentiometer and the divider resistor in series to be grounded, and a connection point between the potentiometer and the divider resistor is connected with the inverting end of the comparator.
4. The intercom intelligent bluetooth module of claim 2, characterized in that: the switch driver comprises a first resistor, a second resistor, a triode and a second diode, one end of the first resistor is connected with the output end of the comparator, the other end of the first resistor is connected with the base of the triode and one end of the second resistor, the other end of the second resistor is connected with the emitting electrode and the grounding end of the triode, the collector electrode of the triode is connected with the anode of the second diode and is connected with the independent power supply, and the independent power supply is connected with the coil of the instantaneous relay and the coil of the time delay relay in series to the anode of the diode.
5. The intercom intelligent bluetooth module of claim 1, characterized in that: the detection position of the voltage sensor is close to the power interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922139659.6U CN210491211U (en) | 2019-12-04 | 2019-12-04 | Intelligent Bluetooth module of interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922139659.6U CN210491211U (en) | 2019-12-04 | 2019-12-04 | Intelligent Bluetooth module of interphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210491211U true CN210491211U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922139659.6U Active CN210491211U (en) | 2019-12-04 | 2019-12-04 | Intelligent Bluetooth module of interphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210491211U (en) |
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2019
- 2019-12-04 CN CN201922139659.6U patent/CN210491211U/en active Active
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