CN210536730U

CN210536730U - Multifunctional user interface module

Info

Publication number: CN210536730U
Application number: CN201922051258.5U
Authority: CN
Inventors: 周明华
Original assignee: Huizhou Na Ya Technology Co Ltd
Current assignee: Huizhou Na Ya Technology Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-05-15
Anticipated expiration: 2029-11-25

Abstract

The utility model relates to a multifunctional user interface module, which comprises an interface unit for connecting an external line, a polarity conversion unit for matching the polarity of the external line with the polarity of a circuit, a hook detection unit for detecting hook signals, a power management and boosting unit for providing working voltage for the circuit, and a processing unit for sending control signals; the interface unit is respectively connected with the polarity conversion unit, the on-hook detection unit and the power management and boosting unit, the on-hook detection unit is connected with the polarity conversion unit and the power management and boosting unit, and the polarity conversion unit, the on-hook detection unit and the power management and boosting unit are respectively connected with the processing unit. The utility model discloses a multi-functional user interface module has built-in processing unit, can provide multiple practical function, satisfies the user demand.

Description

Multifunctional user interface module

Technical Field

The utility model relates to the field of communication technology, particularly, relate to a multi-functional user interface module.

Background

The Subscriber Circuit may also be referred to as a Subscriber Line Interface Circuit (SLIC). Any switch has subscriber line interface circuits. Subscriber Line Interface Circuits (SLICs) are classified into analog subscriber interface circuits and digital subscriber interface circuits according to the type of subscriber telephone.

The existing user interface module does not have a processing chip, and needs to realize the control of the module through an external processing circuit or a computer, so that the application design of the module is complex, and the requirements of users cannot be simply and quickly met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multi-functional user interface module, it has built-in processing chip, can simplify the design of this module in using, satisfies user demand fast.

A multifunctional user interface module comprises an interface unit for connecting an external line, a polarity conversion unit for matching the polarity of the external line with the polarity of a circuit, a hook detection unit for detecting a hook signal, a power management and boosting unit for providing working voltage for the circuit, and a processing unit for sending a control signal; the interface unit is respectively connected with the polarity conversion unit, the on-hook detection unit and the power management and boosting unit, the on-hook detection unit is connected with the polarity conversion unit and the power management and boosting unit, and the polarity conversion unit, the on-hook detection unit and the power management and boosting unit are respectively connected with the processing unit.

Further, the processing unit is controlled through a UART interface.

Further, the processing unit comprises a processing chip, and the processing chip adopts EM 78806A.

Further, the polarity conversion unit includes a ringing circuit for generating a ringing tone, the ringing circuit being connected with the processing unit.

Further, the interface unit comprises a 2-4 line conversion interface.

Furthermore, the power management and voltage boosting unit comprises a voltage boosting circuit, and the output end of the voltage boosting circuit is connected with the interface unit.

Compared with the prior art, the beneficial effects of the utility model are that: the user interface module is reasonable in design, a processing unit is arranged in the user interface module, conversion between serial communication and parallel communication is achieved through the UART interface, and a conversion circuit and a control circuit do not need to be additionally arranged, so that the design of the module in product application is simplified, and the user requirements are quickly met. The processing unit can complete various practical functions through the UART interface, and the requirements of users on various functions of the user interface module are met. The built-in polarity conversion unit can realize TIP/RING polarity inversion, and can generate a ringing signal on one hand and a preamble or charging signal of a CALLER ID (DTMF/FSK) signal on the other hand. The utility model discloses a low power dissipation, easy to use, and external element are few, and output current can reach more than 35MA, is applicable to the various applications of short subscriber line.

Drawings

Fig. 1 is a schematic block diagram of a multi-functional user interface module according to the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1, in a preferred embodiment, the multifunctional user interface module of the present invention mainly includes an interface unit 1, a polarity conversion unit 2, a hook/loop detection unit 3, a power management and voltage boosting unit 4, and a processing unit 5. The interface unit 1 is respectively connected with the polarity conversion unit 2, the hook detection unit 3 and the power management and voltage boosting unit 4, the hook detection unit 3 is connected with the polarity conversion unit 2 and the power management and voltage boosting unit 4, and the polarity conversion unit 2, the hook detection unit 3 and the power management and voltage boosting unit 4 are respectively connected with the processing unit 5.

The interface unit 1 uses a 2-4 line conversion interface, the pin RING is connected to the RING end of the subscriber line, and the pin TIP is connected to the TIP end of the subscriber line. The pin VIN is an audio signal input end, the signal is output to a TIP/RING end, and the inside of the signal is coupled through a 47NF capacitor; pin VOUT is the audio signal output, which is taken from the TIP/RING terminal. The interior is coupled by a capacitance of 100 NF.

The power management and voltage boosting unit 4 comprises a voltage boosting circuit, a pin + VA of the power management and voltage boosting unit 4 is connected with a +5V or +3.3V input voltage through a filter capacitor and provides a working voltage for the circuit, and a pin GNDA is grounded. The pin + VPWR is connected with +5V or +3.3V input voltage to the DC-DC transformer, and the pin GND is used for grounding the DC-DC transformer. The power management and boost unit 4 can realize DC/DC boost, can boost the low input voltage of 5.0V or +3.3V and then output TIP and RING ends, and the output voltage is 48V.

The processing unit 5 is respectively connected with the polarity conversion unit 2, the on-hook and off-hook detection unit 3 and the power management and boosting unit 4. Specifically, the processing unit 5 is connected with the hook detection unit 3 through an SHK signal, can detect the hook and hook actions of the telephone, and can simulate the hook and hook actions of the telephone. The processing unit 5 is connected to the polarity converting unit 2 through RM and FR signals, thereby controlling the polarity conversion of Tip and Ring. In this embodiment, the polarity converting unit 2 includes a ringing circuit, and the processing unit 5 can control the ringing circuit to implement ringing. The processing unit 5 is connected with the power management and boosting unit 4 through SYNC signals, so that power supply of the circuit is controlled, and switching between a normal mode and a power saving mode is realized. In this embodiment, the processing unit 5 comprises a processing chip, which employs EM 78806A. The processing unit 5 is connected with the outside through a UART interface and controls through a UART protocol.

An external control chip is defined as an MCU (microprogrammed control unit), the module is an SLIC (serial interface controller), the baud rate is selected to be 9600, 8N1, and the specific UART communication mode is as follows:

1. data: 0x 100 x0 c;

the direction is as follows: SLIC → MCU;

the functions are as follows: the telephone is off-hook.

2. Data: 0x 100 x0 d;

the direction is as follows: SLIC → MCU;

the functions are as follows: the telephone is hung up.

3. Data: 0x 00-0 x 0F;

the direction is as follows: SLIC → MCU;

the functions are as follows: the telephone dials, PC receives the corresponding number in real time, the coding mode is detailed in the following table:

DTMF hexadecimal equivalent coding table

Hexadecimal equivalent value	DTMF sequence
		0	DTMF D
1	DTMF 1
		2	DTMF 2
3	DTMF 3
		4	DTMF 4
5	DTMF 5
		6	DTMF 6
7	DTMF 7
		8	DTMF 8
9	DTMF 9
		A	DTMF 0
B	DTMF *
		C	DTMF #
D	DTMF A
		E	DTMF B
F	DTMF C

4. Data: 0x 100 XFF

The direction is as follows: MCU → SLIC;

the functions are as follows: and the SLIC sends a dial tone to the telephone, wherein the frequency of the dial tone is 450 Hz.

5. Data: 0x 110 xff;

the direction is as follows: MCU → SLIC;

the functions are as follows: the SLIC stops speaking.

6. Data: command code (0x 13) + tone duration (50 ms/1) + off-time (50 ms/1) +0 XFF;

the direction is as follows: MCU → SLIC;

the functions are as follows: busy tone instructions, such as 0x 130 x 060 x 060 xff, where 0x06 represents 300ms ringing, stopping for 300 ms.

7. Data: 0x 140 xff;

the direction is as follows: MCU → SLIC;

the functions are as follows: the TIP/RING polarity of SLIC is reversed.

8. Data: command code (0x 12) + ringing duration (500 ms/1) + off-time (500 ms/1) + cycle number +0 XFF;

the direction is as follows: MCU → SLIC;

the functions are as follows: SLIC rings the phone, for example: 0x 120 x 020 x 040 x 020 xff here the first 0x02 represents ringing for 1 second, the second 0x02 represents cycling for 2 times, and 0x04 represents stopping for 2 seconds.

9. Data: command code (0X20) + duration of DTMF (× 6.666 ms) + dwell time of DTMF (× 6.666 ms) + number (BCD) +0 XFF;

the direction is as follows: MCU → SLIC;

the functions are as follows: the SLIC sends DTMF signals to the phone, for example: 0x 200 x0f 0x0c 0x 120 x 340 x 560 xff,

indicating dialing DTMF to the phone: 123456; wherein the DTMF dialing time is 15 × 6.666=100ms, and the DTMF stop interval time is 12 × 6.666=80 ms.

10. Data: instruction code (0x 21) + subsequent data length + number of pilot codes 01 + number of sync codes 1 + content;

the direction is as follows: MCU → SLIC;

the functions are as follows: the SLIC sends FSK signals to the telephone, wherein the number of the guide codes 01 is not counted in a number way, and if the number is 0, no lead code is sent. The latter contents can be arbitrary, if the calling system is conformed, the telephone can receive the number. Examples are: 0x 210 x 180 xff 0x 500 x 040 x 130 x 300 x 310 x 360 x 310 x 340 x 300 x 350 x 300 x370x 350 x 360 x 340 x 300 x 340 x 310 x20, the information of sending the FSK incoming call number to the phone by the SLIC is 7556404341, the time information is 10-16, 04: 05.

11. data: instruction code (0x 1 f) +0 xff;

the direction is as follows: MCU → SLIC;

the functions are as follows: and the SLIC module enters a power saving mode, meanwhile, the DCDC part is closed, and the LINE has no voltage output.

12. Data: instruction code (0x 1 e) +0 xff;

the direction is as follows: MCU → SLIC;

the functions are as follows: and the MCU wakes up the SLIC module and enters a normal mode from the power saving mode.

The processing unit 5 realizes the conversion between the serial communication and the parallel communication through the UART interface without additionally arranging a conversion and control circuit, thereby facilitating the configuration of a user and reducing the operation difficulty. Various practical functions are completed through the UART interface, and the requirements of users on various functions of the user interface module can be met.

Module pin description please refer to the following table:

pin numbering	Name (R)	Description of the invention
			1	RING (B)	And is connected to the RING terminal of the subscriber line.
2	TIP (A)	And is connected to the TIP end of the subscriber line.
			3，4，5		Empty without connecting any
6	TXDATA	A command/data communication receiving end connected with the transmitting end of the external MCU
			7	RXDATA	A command/data communication transmitting terminal connected with the receiving terminal of the external MCU
8		Empty without connecting any
			9	VIN	An audio signal input terminal, the signal being output to the TIP/RING terminal. Capacitive coupling internally through a 47NF
10	VOUT	An audio signal output terminal, the signal being derived from the TIP/RING terminal. The interior is coupled by a capacitance of 100 NF.
			11	+VA	The circuit is powered by a capacitor connected with +5V or + 3.3V.
12	GND	The ground terminal of the transformer.
			13	+VPWR	And connecting the +5V or +3.3V voltage to the input end of the transformer.
14		Empty without connecting any

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims

1. A multifunctional user interface module is characterized by comprising an interface unit for connecting an external line, a polarity conversion unit for matching the polarity of the external line with the polarity of a circuit, a hook detection unit for detecting a hook signal, a power management and boosting unit for providing working voltage for the circuit and a processing unit for sending a control signal; the interface unit is respectively connected with the polarity conversion unit, the on-hook detection unit and the power management and boosting unit, the on-hook detection unit is connected with the polarity conversion unit and the power management and boosting unit, and the polarity conversion unit, the on-hook detection unit and the power management and boosting unit are respectively connected with the processing unit.

2. The multi-function user interface module of claim 1, wherein said processing unit is controlled via a UART interface.

3. The multi-function user interface module according to claim 2, wherein said processing unit comprises a processing chip, said processing chip employing EM 78806A.

4. The multi-function user interface module of claim 1, wherein said polarity conversion unit comprises a ringing circuit for generating a ringing tone, said ringing circuit being connected with said processing unit.

5. The multi-function user interface module of claim 1, wherein said interface unit comprises a 2-4 wire conversion interface.

6. The multi-function user interface module of claim 1, wherein said power management and boost unit comprises a boost circuit, an output of said boost circuit being connected to said interface unit.