CN1809106A - Duplex intelligent data storage and communication modem and its data transmission method - Google Patents
Duplex intelligent data storage and communication modem and its data transmission method Download PDFInfo
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- CN1809106A CN1809106A CN 200510030817 CN200510030817A CN1809106A CN 1809106 A CN1809106 A CN 1809106A CN 200510030817 CN200510030817 CN 200510030817 CN 200510030817 A CN200510030817 A CN 200510030817A CN 1809106 A CN1809106 A CN 1809106A
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Abstract
This invention relates to data communication, transmission and control field device and to one compound intelligent memory data communication modulator and its data transmission method between the outside device and upper machine through two degrees of single machine to receive data; wherein, The device is composed of single machine, modulator, transducer, telephone, memory circuit, power and interface, main and secondary telephone received data communication circuit. The method is through main and secondary work circuit and in inner and outer supply mode system power management to realize data receiving, transmitting and error correction computing.
Description
Technical field
The present invention relates to the device in a kind of data communication, transmission and control field, especially refer to a kind of data externally have effectively between equipment and the host computer, rapidly, reliable transmission and jumbo function, receive a kind of compound intelligence storage data communication modulator-demodulator and the data transmission method thereof that transmits data by principal and subordinate's two-stage single-chip microcomputer.
Background technology
When transmitting data by telephone wire, general civilian modulator-demodulator is difficult to satisfy the accuracy that transmits data, always more or less exists the imperfection after the transfer of data; And when receiving terminal need be tackled the ordinary calling of a plurality of clients at the same time, general single modulator-demodulator was difficult to be competent at especially, was certain to cause a large amount of request busy scenario.Therefore, need a kind of advanced modulation demodulator that can tackle this task, it must have following characteristic: at first must solve or maximum possible on improve that the line is busy when the multi-user asked waits for probability, and can tackle possibility of certain root telephone wire chance failure, the reliability of raising communication line; In addition, guarantee the accuracy of transfer of data and the integrality that data are preserved on the maximum possible, stop loss of data.
Summary of the invention
In order to overcome above-mentioned weak point, main purpose of the present invention aims to provide a kind of data communication circuit that comprises primary and secondary two-way phone receiving function.Two groups of Single Chip Microcomputer (SCM) system of main frame and slave are arranged in the circuit, can carry out the reception of data, thereby realize maximum data throughput, improve the utilance of telephone line, guarantee reliability of data transmission at synchronization.
Another object of the present invention is when carrying out inside and outside two kinds of powering modes good protective effect can be arranged at circuit by power supply managing to the lithium battery of in-line power.The inside and outside powering mode of circuit is: adopt the powered battery that carries when not having external power source; When inserting, external power source switches to a kind of compound intelligence storage data communication modulator-demodulator and the data transmission method thereof of external power source immediately.
The technical problem to be solved in the present invention is: solve two groups of Single Chip Microcomputer (SCM) system of main frame and slave, can carry out the reception problem of data at synchronization, guarantee reliability of data transmission; Solve the special circuit of a cover and control whether the external circuit access is arranged, simultaneously, also need circuit kit to control power change-over switch; Because of the lithium ion battery of in-line power has advantages such as energy density height, memory-less effect; but lithium ion battery is very responsive for overcharging, putting excessively; therefore excessive charging and discharge can have a strong impact on its useful life, will solve discharging and recharging of battery such as protected at technical problem.
The technical solution adopted for the present invention to solve the technical problems is: this device is made up of parts such as single-chip microcomputer, modulator-demodulator, transformer, phone, memory circuit, power supply and interfaces, also comprise: the data communication circuit that primary and secondary two-way phone receives, main frame and two groups of Single Chip Microcomputer (SCM) system of slave etc. are arranged in the circuit, wherein:
The input/output terminal of host scm IC1 module is connected successively with from single-chip microcomputer IC10 module, memory circuit IC5 module, main MODEM chip IC 2 modules and the I/O of RS232 interface IC7 module, the input of main MODEM chip IC 2 modules is connected with the output of isolating transformer T1 module, and the input of isolating transformer T1 module is connected with the output of main telephone interface module;
From the input/output terminal of single-chip microcomputer IC10 module successively with memory circuit IC12 module, be connected from the I/O of MODEM chip IC 15 modules with host scm IC1 module, be connected with the output of isolating transformer T2 module from the input of MODEM chip IC 15 modules, the input of isolating transformer T2 module is connected with the output of time telephony interface module;
One power supply managing IC3 module is connected with the power circuit of each module with another power supply managing IC4 module, is the power management of each circuit.
The 15th of the host scm IC1 module of described a kind of compound intelligence storage data communication modulator-demodulator, 16,17,18 pins successively respectively with the 4th of memory circuit IC6,8,2,1 pin is connected, the 16th of host scm IC1 module, 17,18 pins successively respectively with the 2nd of memory circuit IC5,8,1 pin is connected, its the 14th pin is connected with the 4th pin of memory circuit IC5 (5), the DELAY pin of host scm IC1 chip is connected by the base stage of resistance R 19 with IC16 module triode Q4, the 2nd pin of host scm IC1 module is connected with the 30th pin of main MODEM chip IC 2 modules, its the 3rd pin and main MODEM chip IC 2 modules the 27th with the 1st pin parallel connection after be connected, its the 4th pin lead up to capacitor C 19 be connected with the 10th pin the back ground connection, another road is connected with the 5th pin by crystal oscillator Y1, its the 5th pin lead up to capacitor C 20 back ground connection, another road is connected with an end of capacitor C 19 by crystal oscillator Y1, the output of the 1st pin of host scm IC1 module is leaded up to and is met power supply VCC after capacitor C 3 connects, another road connects back ground connection by resistance R 1, and one the tunnel is connected with the 13rd pin of main MODEM chip IC 2 (2) modules again;
Be connected in series a crystal oscillator Y2 between the 24th pin of main MODEM chip IC 2 modules and the 23rd pin, the end of crystal oscillator Y2 connects back ground connection by a capacitor C 2, the other end also connects back ground connection by another capacitor C 1, it is the 6th years old, 25 are connected with power supply VCC with 29 pins back connected with each other, it is the 26th years old, 5 and 22 pins back connected with each other ground connection, its the 15th pin is connected with aanalogvoltage VPA end, the 21st pin is connected with simulation ground VNA end, the 18th pin is connected with simulation ground VNA end by capacitor C 4, the 19th pin is connected with simulation ground VNA end by capacitor C 5, and the 14th pin is connected with power supply VCC; Its 20th pin is connected by the serial connection point of resistance R 3 and capacitor C 6, be connected with the 3rd, 4 ends of isolating transformer T1 with the coupling circuit of capacitor C 6 by resistance R 4 between its 17th, 16 pin, its the 3rd pin is connected with the base stage that detects ringing relay IC circuit 9 module triode Q1 by resistance R 5, and its 2nd pin is connected with the 5th end that detects ring optocoupler circuit IC8 module; Secondary the 2nd end of isolating transformer T1 is connected with the 1st end of the socket J1 that detects ring optocoupler circuit IC8 module, and secondary the 1st end is connected with the 4th pin that detects ringing relay IC circuit 9 modules;
Detect the 4th end ground connection of ring optocoupler circuit IC8 module, secondary the 1st end is connected with the 1st end of socket J1 by resistance R 12, secondary the 2nd end is connected with the 2nd end of socket J1 by capacitor C 8, be connected in series diode D1 between secondary the 1st end and secondary the 2nd end, the output of socket J1 is connected with telephone wire;
Detecting a road of ringing relay IC circuit 9 modules the 1st pin is connected with power supply VCC, another road is connected with the emitter of triode Q1 by diode D4, the grounded collector of triode Q1, the 5th pin is connected with the 2nd end of socket J1, and its 10th pin is connected with the emitter of triode Q1.
The 8th pin of one power supply managing IC3 module of described a kind of compound intelligence storage data communication modulator-demodulator is by resistance R 16 and the 7th, 6 pins back connected with each other is connected with its 1st pin by inductance 2, its the 1st pin is successively by one the tunnel being connected with capacitor C 28 and afterwards being connected also ground connection with the 1st pin of another power supply managing IC4 module behind the diode D5, another road is by resistance R 18 and resistance R 17 back ground connection, the 3rd pin is by capacitor C 27 back ground connection, the 4th pin ground connection, the 5th pin is by resistance R 17 back ground connection, the 6th pin is successively by capacitor C 25, capacitor C 26 and connect behind end and the mains switch S1 one the tunnel and be connected with the 1st pin of socket J3, another road is connected with the 2nd pin of J4 with diode D7 by resistance R 14 successively, capacitor C 25, capacitor C 26 and connect back ground connection, the 2nd pin of the socket J3 ground connection afterwards that is connected with the 1st pin of socket J4;
The 3rd pin of described another system power supply pipe IC4 module meets power supply VCC with connecing in the lump of capacitor C 28, C29, C30 and C31 after end is connected, another of capacitor C 28, C29, C30 and C31 also connects the end ground connection afterwards that is connected with the 1st pin, connecing in the lump of the 2nd pin and capacitor C 32 and C33 meets power supply VCC after end is connected, and another of capacitor C 32 and C33 also connects the end ground connection afterwards that is connected with the 1st pin.
Described a kind of compound intelligence storage data communication modulator-demodulator from the 15th of single-chip microcomputer IC10 module, 16,17,18 pins successively respectively with the 4th of external memory IC circuit 11,8,2,1 pin is connected, from the 16th of single-chip microcomputer IC10 module, 17,18 pins successively respectively with the 2nd of external memory IC circuit 11,8,1 pin is connected, its the 14th pin is connected with the 4th pin of external memory IC circuit 12, be connected with the 30th pin from the 2nd pin of single-chip microcomputer IC10 module from MODEM chip IC 15 modules, its the 3rd pin with from MODEM chip IC 15 modules the 27th with the 1st pin parallel connection after be connected, its the 4th pin lead up to capacitor C 18 be connected with the 10th pin the back ground connection, another road is connected with the 5th pin by crystal oscillator Y1, its the 5th pin lead up to capacitor C 17 back ground connection, another road is connected with an end of capacitor C 18 by crystal oscillator Y1, lead up to from the output of the 1st pin of single-chip microcomputer IC10 module and to meet power supply VCC after capacitor C 11 connects, another road connects back ground connection by resistance R 6, and one the tunnel is connected with the 13rd pin from MODEM chip IC 15 modules again;
Be connected in series a crystal oscillator Y2 between the 24th pin of MODEM chip IC 15 modules and the 23rd pin, the end of crystal oscillator Y2 connects back ground connection by a capacitor C 9, the other end also connects back ground connection by another capacitor C 10, it is the 6th years old, 25 are connected with power supply VCC with 29 pins back connected with each other, it is the 26th years old, 5 and 22 pins back connected with each other ground connection, its the 15th pin is connected with aanalogvoltage VPA end, the 21st pin is connected with simulation ground VNA end, the 18th pin is connected with simulation ground VNA end by capacitor C 12, the 19th pin is connected with simulation ground VNA end by capacitor C 13, and the 14th pin is connected with power supply VCC; Its 20th pin is connected by the serial connection point of resistance R 8 and capacitor C 14, be connected with the 3rd, 4 ends of isolating transformer T2 with the coupling circuit of capacitor C 14 by resistance R 8 between its 17th, 16 pin, be connected with the base stage that detects ringing relay IC circuit 14 module triode Q2 by resistance R 22 from the 3rd pin of MODEM chip IC 15 modules, its 2nd pin is connected with the 5th end that detects ring optocoupler circuit IC13 module; Secondary the 2nd end of isolating transformer T2 is connected with the 1st end of the socket J2 that detects ring optocoupler circuit IC13 module, and secondary the 1st end is connected with the 4th pin that detects ringing relay IC circuit 14 modules;
Detect the 4th end ground connection of ring optocoupler circuit IC13 module, secondary the 1st end is connected with the 1st end of socket J2 by resistance R 13, and secondary the 2nd end is connected with the 2nd end of socket J2 by capacitor C 16, and the output of socket J2 is connected with telephone wire;
Detecting a road of ringing relay IC circuit 14 modules the 1st pin is connected with power supply VCC, another road is connected with the emitter of triode Q2 by diode D3, the grounded collector of triode Q2, the 5th pin is connected with the 2nd end of socket J2, and its 10th pin is connected with the emitter of triode Q2.
A kind of data transmission method of compound intelligence storage data communication modulator-demodulator, this method is by the host scm operating circuit, from the single-chip microcomputer operating circuit with carry out the power supply managing of inside and outside two kinds of powering modes in circuit, be implemented in synchronization and carry out receiving and sending of data and error check calculation, it comprises: the host scm workflow reaches the data transmission method from the single-chip microcomputer workflow, wherein:
The concrete steps of host scm workflow are:
Host scm begins the starting of A module;
Whether effectively the output signal transmission that host scm begins the A module enters MODEMIC2 detection signal detection and judge module;
If detect useful signal, then enter off-hook, notice host scm IC1 received signal module;
If do not detect useful signal, then whether effectively feedback enters MODEMIC2 detection signal detection and judge module;
Off-hook, the output signal of notice host scm IC1 received signal module transmits and enters host scm IC1 process data signal module, and host scm IC1 carries out error check calculation to receiving the signal that comes;
Does the output signal of host scm IC1 process data signal module transmit that to enter verification correct? module;
If verification is correct, then enter and write exterior storage chip IC 5, send out on-hook letter module, data are write a memory circuit IC5 and another memory circuit IC6 module;
If check errors then enters and abandons data, send out on-hook signal A module and feed back to main MODEM chip IC 2 modules;
Write exterior storage chip IC 5, the output signal transmission of sending out on-hook letter module enters data and send upper computer module;
Data are sent the output signal of upper computer module to transmit and are entered and finish A.
The data transmission method of described a kind of compound intelligence storage data communication modulator-demodulator, described from the single-chip microcomputer operating circuit need be from single-chip microcomputer IC10 to the available serial ports of host scm IC1 application, from the concrete steps of single-chip microcomputer workflow be:
Begin the starting of B module from single-chip microcomputer;
Whether effectively the output signal transmission that begins the B module from single-chip microcomputer enters MODEMIC15 detection signal detection and judge module;
If detect useful signal, then enter off-hook, notice is from single-chip microcomputer IC10 received signal module;
If do not detect useful signal, then whether effectively feedback enters MODEMIC15 detection signal detection and judge module;
Off-hook, notice transmit to enter from the output signal of single-chip microcomputer IC10 received signal module and send the processing module from single-chip microcomputer IC10, carry out error check calculation from single-chip microcomputer IC10 to receiving the signal that comes;
Send and transmit from the output signal of single-chip microcomputer IC10 processing module that to enter data check correct? module;
If verification is correct, then enter and write exterior storage chip IC 12, send out on-hook letter module, data are write external memory IC circuit 12 and another external memory IC circuit 11 modules;
If check errors then enters and abandons data, send out on-hook signal B module and feed back to from MODEM chip IC 15 modules;
Please step 5. is judged the communication serial port success to host scm?
Write exterior storage chip IC 12, the output signal of sending out on-hook letter module transmits to enter to host scm asks communication serial port success judge module;
If ask the communication serial port success, then enter the transmission data and send upper computer module to host scm;
If please not have success by communication serial port to host scm, then feedback enters the input of asking the communication serial port success to host scm, waits for application next time;
Data are sent the output signal of upper computer module to transmit and are entered and finish B.
The invention has the beneficial effects as follows: provide a kind of data externally between equipment and the host computer effectively, rapidly, the equipment of jumbo reliable transmission, comprise that principal and subordinate's two-stage single-chip microcomputer receives transmission control integrated system, host computer multifunctional communication interface and 12V external power adapter, can expand accessory, interior nonresident portion and battery part; The characteristics of its data receiver circuit maximum are the Data Receiving spatial caches that has increased the 4M byte, can hold more data in the unit interval; Be exactly to have increased the powered battery loop in addition, the lithium battery of vast capacity can holding circuit continuous operation 48 hours at full speed, so externally under the situation of civil power power down, the data that still can receive have into guaranteed the integrality of data.
Description of drawings
The present invention is further described below in conjunction with description of drawings and embodiment.
Accompanying drawing 1 is overall circuit theory structure block diagram of the present invention;
Accompanying drawing 2 is host scm working circuit diagram of the present invention;
Accompanying drawing 3 is power supply managing circuit diagram of the present invention;
Accompanying drawing 4 is that the present invention is from the single-chip microcomputer working circuit diagram;
Accompanying drawing 5 is host scm workflow schematic diagram of the present invention;
Accompanying drawing 6 is that the present invention is from single-chip microcomputer workflow schematic diagram;
The drawing reference numeral explanation:
1-host scm IC1;
2-master MODEM chip IC 2;
3-isolating transformer T1;
4-main telephone interface;
5-one memory circuit IC5;
6-RS232 interface IC7;
7-one power supply managing IC3;
8-is from single-chip microcomputer IC10;
9-is from MODEM chip IC 15;
10-isolating transformer T2;
11-telephony interface;
13-detects ring optocoupler circuit IC13;
14-detects ringing relay IC circuit 14;
Another memory circuit of 15-IC6;
16-IC16；
Another power supply managing of 17-IC4;
18-detects ring optocoupler circuit IC8;
19-detects ringing relay IC circuit 9;
21-external memory IC circuit 11;
22-external memory IC circuit 12;
31-begins A;
Whether the 32-MODEMIC2 detection signal is effective;
The 33-off-hook, notice host scm IC1 received signal;
34-host scm IC1 process data signal;
Is the 35-verification correct?
36-abandons data, sends out on-hook signal A;
37-writes exterior storage chip IC 5, sends out on-hook letter (37);
The 38-data are sent host computer;
39-finishes A;
41-begins B;
Effectively whether the 42-MODEMIC15 detection signal (42);
The 43-off-hook, notice is from single-chip microcomputer IC10 received signal;
44-send from single-chip microcomputer IC10 and handles;
Is the 45-data check correct?
46-abandons data, sends out on-hook signal B;
47-writes exterior storage chip IC 12, sends out the on-hook letter;
48-asks the communication serial port success to host scm;
The 49-data are sent host computer B;
50-finishes B;
Embodiment:
See also shown in the accompanying drawing 1, apparatus of the present invention are made up of parts such as single-chip microcomputer, modulator-demodulator, transformer, phone, memory circuit, power supply and interfaces, it also comprises: the data communication circuit that primary and secondary two-way phone receives, main frame and two groups of Single Chip Microcomputer (SCM) system of slave etc. are arranged in the circuit, wherein:
The input/output terminal of host scm IC1 (1) module is connected with the I/O of RS232 interface IC7 (6) module successively with from single-chip microcomputer IC10 (8) module, memory circuit IC5 (a 5) module, main MODEM chip IC 2 (2) modules, the input of main MODEM chip IC 2 (2) modules is connected with the output of isolating transformer T1 (3) module, and the input of isolating transformer T1 (3) module is connected with the output of main telephone interface (4) module;
From the input/output terminal of single-chip microcomputer IC10 (8) module successively with external memory IC circuit 12 (22) modules, be connected from the I/O of MODEM chip IC 15 (9) modules with host scm IC1 (1) module, be connected with the output of isolating transformer T2 (10) module from the input of MODEM chip IC 15 (9) modules, the input of isolating transformer T2 (10) module is connected with the output of time telephony interface (11) module;
One power supply managing IC3 (7) module is connected with the power circuit of each module with another power supply managing IC4 (17) module, is the power management of each circuit.
See also shown in the accompanying drawing 2, the 15th of host scm IC1 (1) module of described a kind of compound intelligence storage data communication modulator-demodulator, 16,17,18 pins successively respectively with the 4th of another memory circuit IC6 (15), 8,2,1 pin is connected, the 16th of host scm IC1 (1) module, 17,18 pins successively respectively with the 2nd of memory circuit IC5 (5), 8,1 pin is connected, its the 14th pin is connected with the 4th pin of memory circuit IC5 (5), the DELAY pin of host scm IC1 (1) chip is connected by the base stage of resistance R 19 with IC16 (16) module triode Q4, the 2nd pin of host scm IC1 (1) module is connected with the 30th pin of main MODEM chip IC 2 (2) modules, its the 3rd pin and main MODEM chip IC 2 (2) modules the 27th with the 1st pin parallel connection after be connected, its the 4th pin lead up to capacitor C 19 be connected with the 10th pin the back ground connection, another road is connected with the 5th pin by crystal oscillator Y1, its the 5th pin lead up to capacitor C 20 back ground connection, another road is connected with an end of capacitor C 19 by crystal oscillator Y1, the output of the 1st pin of host scm IC1 (1) module is leaded up to and is met power supply VCC after capacitor C 3 connects, another road connects back ground connection by resistance R 1, and one the tunnel is connected with the 13rd pin of main MODEM chip IC 2 (2) modules again;
Be connected in series a crystal oscillator Y2 between the 24th pin of main MODEM chip IC 2 (2) modules and the 23rd pin, the end of crystal oscillator Y2 connects back ground connection by a capacitor C 2, the other end also connects back ground connection by another capacitor C 1, it is the 6th years old, 25 are connected with power supply VCC with 29 pins back connected with each other, it is the 26th years old, 5 and 22 pins back connected with each other ground connection, its the 15th pin is connected with aanalogvoltage VPA end, the 21st pin is connected with simulation ground VNA end, the 18th pin is connected with simulation ground VNA end by capacitor C 4, the 19th pin is connected with simulation ground VNA end by capacitor C 5, and the 14th pin is connected with power supply VCC; Its 20th pin is connected by the serial connection point of resistance R 3 and capacitor C 6, be connected with the 3rd, 4 ends of isolating transformer T1 with the coupling circuit of capacitor C 6 by resistance R 4 between its 17th, 16 pin, its the 3rd pin is connected with the base stage that detects ringing relay IC circuit 9 (19) module triode Q1 by resistance R 5, and its 2nd pin is connected with the 5th end that detects ring optocoupler circuit IC8 (18) module; Secondary the 2nd end of isolating transformer T1 is connected with the 1st end of the socket J1 that detects ring optocoupler circuit IC8 (18) module, and secondary the 1st end is connected with the 4th pin that detects ringing relay IC circuit 9 (19) modules;
Detect the 4th end ground connection of ring optocoupler circuit IC8 (18) module, secondary the 1st end is connected with the 1st end of socket J1 by resistance R 12, secondary the 2nd end is connected with the 2nd end of socket J1 by capacitor C 8, be connected in series diode D1 between secondary the 1st end and secondary the 2nd end, the output of socket J1 is connected with telephone wire;
Detecting a road of ringing relay IC circuit 9 (19) module the 1st pins is connected with power supply VCC, another road is connected with the emitter of triode Q1 by diode D4, the grounded collector of triode Q1, the 5th pin is connected with the 2nd end of socket J1, and its 10th pin is connected with the emitter of triode Q1.
See also shown in the accompanying drawing 3, the 8th pin of one power supply managing IC3 (7) module of described a kind of compound intelligence storage data communication modulator-demodulator is by resistance R 16 and the 7th, 6 pins back connected with each other is connected with its 1st pin by inductance 2, its the 1st pin is successively by one the tunnel being connected with capacitor C 28 and afterwards being connected also ground connection with the 1st pin of another system power supply pipe IC4 (17) module behind the diode D5, another road is by resistance R 18 and resistance R 17 back ground connection, the 3rd pin is by capacitor C 27 back ground connection, the 4th pin ground connection, the 5th pin is by resistance R 17 back ground connection, the 6th pin is successively by capacitor C 25, capacitor C 26 and connect behind end and the mains switch S1 one the tunnel and be connected with the 1st pin of socket J3, another road is connected with the 2nd pin of J4 with diode D7 by resistance R 14 successively, capacitor C 25, capacitor C 26 and connect back ground connection, the 2nd pin of the socket J3 ground connection afterwards that is connected with the 1st pin of socket J4;
The 3rd pin of described another system power supply pipe IC4 (17) module meets power supply VCC with connecing in the lump of capacitor C 28, C29, C30 and C31 after end is connected, another of capacitor C 28, C29, C30 and C31 also connects the end ground connection afterwards that is connected with the 1st pin, connecing in the lump of the 2nd pin and capacitor C 32 and C33 meets power supply VCC after end is connected, and another of capacitor C 32 and C33 also connects the end ground connection afterwards that is connected with the 1st pin.
See also shown in the accompanying drawing 4, described a kind of compound intelligence storage data communication modulator-demodulator from the 15th of single-chip microcomputer IC10 (8) module, 16,17,18 pins successively respectively with the 4th of external memory IC circuit 11 (21), 8,2,1 pin is connected, from the 16th of single-chip microcomputer IC10 (8) module, 17,18 pins successively respectively with the 2nd of external memory IC circuit 11 (21), 8,1 pin is connected, its the 14th pin is connected with the 4th pin of external memory IC circuit 12 (22), be connected with the 30th pin from the 2nd pin of single-chip microcomputer IC10 (8) module from MODEM chip IC 15 (9) modules, its the 3rd pin with from MODEM chip IC 15 (9) modules the 27th with the 1st pin parallel connection after be connected, its the 4th pin lead up to capacitor C 18 be connected with the 10th pin the back ground connection, another road is connected with the 5th pin by crystal oscillator Y1, its the 5th pin lead up to capacitor C 17 back ground connection, another road is connected with an end of capacitor C 18 by crystal oscillator Y1, lead up to from the output of the 1st pin of single-chip microcomputer IC10 (8) module and to meet power supply VCC after capacitor C 11 connects, another road connects back ground connection by resistance R 6, and one the tunnel is connected with the 13rd pin from MODEM chip IC 15 (9) modules again;
Be connected in series a crystal oscillator Y2 between the 24th pin of MODEM chip IC 15 (9) modules and the 23rd pin, the end of crystal oscillator Y2 connects back ground connection by a capacitor C 9, the other end also connects back ground connection by another capacitor C 10, it is the 6th years old, 25 are connected with power supply VCC with 29 pins back connected with each other, it is the 26th years old, 5 and 22 pins back connected with each other ground connection, its the 15th pin is connected with aanalogvoltage VPA end, the 21st pin is connected with simulation ground VNA end, the 18th pin is connected with simulation ground VNA end by capacitor C 12, the 19th pin is connected with simulation ground VNA end by capacitor C 13, and the 14th pin is connected with power supply VCC; Its 20th pin is connected by the serial connection point of resistance R 8 and capacitor C 14, be connected with the 3rd, 4 ends of isolating transformer T2 with the coupling circuit of capacitor C 14 by resistance R 8 between its 17th, 16 pin, be connected with the base stage that detects ringing relay IC circuit 14 (14) module triode Q2 by resistance R 22 from the 3rd pin of MODEM chip IC 15 (9) modules, its 2nd pin is connected with the 5th end that detects ring optocoupler circuit IC13 (13) module; Secondary the 2nd end of isolating transformer T2 is connected with the 1st end of the socket J2 that detects ring optocoupler circuit IC13 (13) module, and secondary the 1st end is connected with the 4th pin that detects ringing relay IC circuit 14 (14) modules;
Detect the 4th end ground connection of ring optocoupler circuit IC13 (13) module, secondary the 1st end is connected with the 1st end of socket J2 by resistance R 13, secondary the 2nd end is connected with the 2nd end of socket J2 by capacitor C 16, and the output of socket J2 is connected with telephone wire;
Detecting a road of ringing relay IC circuit 14 (14) module the 1st pins is connected with power supply VCC, another road is connected with the emitter of triode Q2 by diode D3, the grounded collector of triode Q2, the 5th pin is connected with the 2nd end of socket J2, and its 10th pin is connected with the emitter of triode Q2.
See also shown in the accompanying drawing 5,6, a kind of data transmission method of compound intelligence storage data communication modulator-demodulator, this method is by the host scm operating circuit, from the single-chip microcomputer operating circuit with carry out the power supply managing of inside and outside two kinds of powering modes in circuit, be implemented in synchronization and carry out receiving and sending and error check calculation etc. of data, it comprises: the host scm workflow reaches the data transmission method from the single-chip microcomputer workflow, wherein:
The concrete steps of host scm workflow are:
Host scm begins the starting of A (31) module;
Whether effectively the output signal transmission that host scm begins A (31) module enters MODEMIC2 the detection signal detection and the judge module of (32);
If detect useful signal, then enter off-hook, notice host scm IC1 received signal (33) module;
If do not detect useful signal, then whether effectively feedback enters MODEMIC2 the detection signal detection and the judge module of (32);
Off-hook, the output signal of notice host scm IC1 received signal (33) module transmits and enters host scm IC1 process data signal (34) module, and host scm IC1 carries out error check calculation to receiving the signal that comes;
Does the output signal of host scm IC1 process data signal (34) module transmit that to enter verification correct? (35) module;
If verification is correct, then enter and write exterior storage chip IC 5, send out on-hook letter (37) module, data are write a memory circuit IC5 (5) and another memory circuit IC6 (15) module;
If check errors then enters and abandons data, send out on-hook signal A (36) module and feed back to main MODEM chip IC 2 (2) modules;
Write exterior storage chip IC 5, the output signal transmission of sending out on-hook letter (37) module enters data and send host computer A (38) module;
Data are sent the output signal of host computer A (38) module to transmit and are entered and finish A (39).
See also shown in the accompanying drawing 6, the data transmission method of described a kind of compound intelligence storage data communication modulator-demodulator from the single-chip microcomputer operating circuit need be from single-chip microcomputer IC10 (8) to the available serial ports of host scm IC1 (1) application, from the concrete steps of single-chip microcomputer workflow be:
Begin the starting of B (41) module from single-chip microcomputer;
Whether effectively the output signal transmission that begins B (41) module from single-chip microcomputer enters MODEMIC15 the detection signal detection and the judge module of (42);
If detect useful signal, then enter off-hook, notice is from single-chip microcomputer IC10 received signal (43) module;
If do not detect useful signal, then whether effectively feedback enters MODEMIC15 the detection signal detection and the judge module of (42);
Off-hook, notice transmit to enter to send from single-chip microcomputer IC10 from the output signal of single-chip microcomputer IC10 received signal (43) module handles (44) module, carries out error check calculation from single-chip microcomputer IC10 to receiving the signal that comes;
Send the output signal of handling (44) module from single-chip microcomputer IC10 to transmit to enter data check correct? (45) module;
If verification is correct, then enter and write exterior storage chip IC 12, send out on-hook letter (47) module, data are write an external memory IC circuit 12 (22) and another external memory IC circuit 11 (21) modules;
If check errors then enters and abandons data, send out on-hook signal B (46) module and feed back to from MODEM chip IC 15 (9) modules;
Please step 5. is judged the communication serial port success to host scm?
Write exterior storage chip IC 12, the output signal of sending out on-hook letter (47) module transmits to enter to host scm asks communication serial port success (48) judge module;
If ask the communication serial port success, then enter the transmission data and send host computer B (49) module to host scm;
If please not have success by communication serial port to host scm, then feedback enters the input of asking communication serial port success (48) to host scm, wait application next time;
Data are sent the output signal of host computer B (49) module to transmit and are entered and finish B (50).One of specific embodiments of the invention:
The JR-TM I data transmission circuit that the present invention proposes comprises:
Two single-chip microcomputers respectively as main frame and slave, are used for receiving and transmitting data, carry out error check calculation simultaneously;
Two isolating transformers, the Data Receiving transmit port and the main telephone interface of coupling MODEM chip;
Two MODEM chips, the bell signal that responsible detection is come in and the data-signal that sends to master and slave single-chip microcomputer carried out modulation;
Data storage circuitry, the data of being responsible for storing master and slave single-chip microcomputer;
The RS232 interface, the serial type interface of single-chip microcomputer and host computer;
Whether power supply managing, control have external circuit to insert, and power change-over switch is managed the charging and the discharge of lithium ion battery simultaneously.
Main telephone interface and time telephony interface are respectively that master and slave single-chip microcomputer receives the interface from the calling line number certificate.
Described principal and subordinate's data reception module can be both and receive the two-way communication signal, can allow the other side freely select to switch, and reduces the online stand-by period.
Described electronics integrated system circuit comprises Data Receiving, data check, storage and output, and as a global design, this three part is combined together, to reach the purpose of optimal design.
The characteristics of the data receiver circuit maximum that the present invention proposes are the Data Receiving spatial caches that has increased the 4M byte, can hold more data in the unit interval.Be exactly to have increased the powered battery loop in addition, the lithium battery of vast capacity can holding circuit continuous operation 48 hours at full speed, so externally under the situation of civil power power down, the data that still can receive have into guaranteed the integrality of data.
The inside and outside powering mode of circuit of the present invention is: adopt the powered battery that carries when not having external power source; When inserting, external power source switches to external power source immediately.Like this, whether have external circuit insert, simultaneously, also need circuit kit to control power change-over switch if just needing the special circuit of a cover to control.The lithium ion battery of in-line power has advantages such as energy density height, memory-less effect, but lithium ion battery is put very sensitivity for overcharging, crossing, and excessive charging and discharge can have a strong impact on its useful life, therefore must protect discharging and recharging of battery.Power management has partly adopted comparatively advanced design to finish above control in this circuit.
The embodiment of specific embodiments of the invention:
Fig. 2 is a JR-TM I host scm operating circuit schematic diagram.In main line, integrated chip IC3 and IC4 are responsible for the management system working power specially; When external power source was arranged, IC3 connected the externally fed loop and is stabilized in system works voltage 5V, if during outside power down, switched to powered battery and boosted to system works voltage 5V.IC4 gives storage chip IC5 and IC6 power supply specially.AT45DB041 is a 512KB high-capacity FLASH chip, has the power down data and does not lose, the storage chip that the holding time is long.When system's operate as normal, IC8 and IC9 are responsible for detecting the bell signal that the external call circuit transmits, if effectively ring then MODEM chip IC 2 be responsible for off-hooks so that set up carrier signal on the line, and notice host scm IC1 receives data.After the telephone line successful connection, all data all must be coupled to MODEM chip IC 2 and pass to IC1 by isolating transformer T1 on the circuit.Host scm IC1 carries out error check calculation to all data that receive into, if correctly then write exterior storage chip IC 5 and IC6, otherwise abandons.When transfer of data finishes, single-chip microcomputer sends on-hook signal to MODEM chip IC 2, passes to host computer (for example PC etc.) by serial port chip IC7 receiving the new data of coming in then.From single-chip microcomputer operating circuit (Fig. 2), operation principle roughly is identical with master singlechip circuit, unique difference be or not directly to pass to host computer by the RS232 serial ports from the data that single-chip microcomputer IC10 receives into, but earlier to the available serial ports of host scm IC1 application, if success then send data to host computer, otherwise must wait for application next time.
Fig. 5, the 6th, host scm and from the workflow diagram of single-chip microcomputer is an example with the main single-chip microcomputer system:
From Single Chip Microcomputer (SCM) system, be in the secondary line, the operation principle main single-chip microcomputer system of making peace greatly is identical, unique difference is exactly step of many execution between step 4 and step 5, be exactly need be to the available serial ports of host scm IC1 application from single-chip microcomputer IC10, if success then send data to host computer, otherwise wait for application next time.
The present invention be a kind of data externally between equipment and the host computer effectively, rapidly, the equipment of jumbo reliable transmission.Comprise that principal and subordinate's two-stage single-chip microcomputer receives transmission control integrated system, host computer multifunctional communication interface and 12V external power adapter, can expand accessory (interior nonresident portion, battery part).By the terminal data transmitting terminal data are sent, be sent to modulator-demodulator, because modulator-demodulator built-in intelligence proving program verification msg correctness by telephone wire, if transfer of data correctly then preserve, if mistake then abandons, and require terminal to resend, finish until transfer of data.After a communication finishes,, then data are sent to host computer, otherwise then continue to be kept in the internal storage medium at once if normal with upper machine communication.
Need at last to illustrate: any any modification or partial replacement that does not break away from the spirit and scope of the present invention, it all should be encompassed in the claim scope of the present invention.
Claims (6)
1, a kind of compound intelligence storage data communication modulator-demodulator, this device has single-chip microcomputer, modulator-demodulator, transformer, phone, memory circuit, power supply and interface, it is characterized in that comprising: the data communication circuit that primary and secondary two-way phone receives, two groups of Single Chip Microcomputer (SCM) system of main frame and slave are arranged in the circuit, wherein:
The input/output terminal of host scm IC1 (1) module is connected with the I/O of RS232 interface IC7 (6) module successively with from single-chip microcomputer IC10 (8) module, memory circuit IC5 (a 5) module, main MODEM chip IC 2 (2) modules, the input of main MODEM chip IC 2 (2) modules is connected with the output of isolating transformer T1 (3) module, and the input of isolating transformer T1 (3) module is connected with the output of main telephone interface (4) module;
From the input/output terminal of single-chip microcomputer IC10 (8) module successively with external memory IC circuit 12 (22) modules, be connected from the I/O of MODEM chip IC 15 (9) modules with host scm IC1 (1) module, be connected with the output of isolating transformer T2 (10) module from the input of MODEM chip IC 15 (9) modules, the input of isolating transformer T2 (10) module is connected with the output of time telephony interface (11) module;
One system power supply pipe IC3 (7) module is connected with the power circuit of each module with another power supply managing IC4 (17) module, is the power management of each circuit.
2, a kind of compound intelligence storage data communication modulator-demodulator according to claim 1, it is characterized in that: the 15th of described host scm IC1 (1) module, 16,17,18 pins successively respectively with the 4th of another memory circuit IC6 (15), 8,2,1 pin is connected, the 16th of host scm IC1 (1) module, 17,18 pins successively respectively with the 2nd of memory circuit IC5 (5), 8,1 pin is connected, its the 14th pin is connected with the 4th pin of memory circuit IC5 (5), the DELAY pin of host scm IC1 (1) chip is connected by the base stage of resistance R 19 with IC16 (16) module triode Q4, the 2nd pin of host scm IC1 (1) module is connected with the 30th pin of main MODEM chip IC 2 (2) modules, its the 3rd pin and main MODEM chip IC 2 (2) modules the 27th with the 1st pin parallel connection after be connected, its the 4th pin lead up to capacitor C 19 be connected with the 10th pin the back ground connection, another road is connected with the 5th pin by crystal oscillator Y1, its the 5th pin lead up to capacitor C 20 back ground connection, another road is connected with an end of capacitor C 19 by crystal oscillator Y1, the output of the 1st pin of host scm IC1 (1) module is leaded up to and is met power supply VCC after capacitor C 3 connects, another road connects back ground connection by resistance R 1, and one the tunnel is connected with the 13rd pin of main MODEM chip IC 2 (2) modules again;
Be connected in series a crystal oscillator Y2 between the 24th pin of main MODEM chip IC 2 (2) modules and the 23rd pin, the end of crystal oscillator Y2 connects back ground connection by a capacitor C 2, the other end also connects back ground connection by another capacitor C 1, it is the 6th years old, 25 are connected with power supply VCC with 29 pins back connected with each other, it is the 26th years old, 5 and 22 pins back connected with each other ground connection, its the 15th pin is connected with aanalogvoltage VPA end, the 21st pin is connected with simulation ground VNA end, the 18th pin is connected with simulation ground VNA end by capacitor C 4, the 19th pin is connected with simulation ground VNA end by capacitor C 5, and the 14th pin is connected with power supply VCC; Its 20th pin is connected by the serial connection point of resistance R 3 and capacitor C 6, be connected with the 3rd, 4 ends of isolating transformer T1 with the coupling circuit of capacitor C 6 by resistance R 4 between its 17th, 16 pin, its the 3rd pin is connected with the base stage that detects ringing relay IC circuit 9 (19) module triode Q1 by resistance R 5, and its 2nd pin is connected with the 5th end that detects ring optocoupler circuit IC8 (18) module; Secondary the 2nd end of isolating transformer T1 is connected with the 1st end of the socket J1 that detects ring optocoupler circuit IC8 (18) module, and secondary the 1st end is connected with the 4th pin that detects ringing relay IC circuit 9 (19) modules;
Detect the 4th end ground connection of ring optocoupler circuit IC8 (18) module, secondary the 1st end is connected with the 1st end of socket J1 by resistance R 12, secondary the 2nd end is connected with the 2nd end of socket J1 by capacitor C 8, be connected in series diode D1 between secondary the 1st end and secondary the 2nd end, the output of socket J1 is connected with telephone wire;
Detecting a road of ringing relay IC circuit 9 (19) module the 1st pins is connected with power supply VCC, another road is connected with the emitter of triode Q1 by diode D4, the grounded collector of triode Q1, the 5th pin is connected with the 2nd end of socket J1, and its 10th pin is connected with the emitter of triode Q1.
3, a kind of compound intelligence storage data communication modulator-demodulator according to claim 1, it is characterized in that: the 8th pin of described power supply managing IC3 (a 7) module is by resistance R 16 and the 7th, 6 pins back connected with each other is connected with its 1st pin by inductance 2, its the 1st pin is successively by one the tunnel being connected with capacitor C 28 and afterwards being connected also ground connection with the 1st pin of another power supply managing IC4 (17) module behind the diode D5, another road is by resistance R 18 and resistance R 17 back ground connection, the 3rd pin is by capacitor C 27 back ground connection, the 4th pin ground connection, the 5th pin is by resistance R 17 back ground connection, the 6th pin is successively by capacitor C 25, capacitor C 26 and connect behind end and the mains switch S1 one the tunnel and be connected with the 1st pin of socket J3, another road is connected with the 2nd pin of J4 with diode D7 by resistance R 14 successively, capacitor C 25, capacitor C 26 and connect back ground connection, the 2nd pin of the socket J3 ground connection afterwards that is connected with the 1st pin of socket J4;
The 3rd pin of described another system power supply pipe IC4 (17) module meets power supply VCC with connecing in the lump of capacitor C 28, C29, C30 and C31 after end is connected, another of capacitor C 28, C29, C30 and C31 also connects the end ground connection afterwards that is connected with the 1st pin, connecing in the lump of the 2nd pin and capacitor C 32 and C33 meets power supply VCC after end is connected, and another of capacitor C 32 and C33 also connects the end ground connection afterwards that is connected with the 1st pin.
4, a kind of compound intelligence storage data communication modulator-demodulator according to claim 1, it is characterized in that: described from the 15th of single-chip microcomputer IC10 (8) module, 16,17,18 pins successively respectively with the 4th of external memory IC circuit 11 (21), 8,2,1 pin is connected, from the 16th of single-chip microcomputer IC10 (8) module, 17,18 pins successively respectively with the 2nd of external memory IC circuit 11 (21), 8,1 pin is connected, its the 14th pin is connected with the 4th pin of external memory IC circuit 12 (22), be connected with the 30th pin from the 2nd pin of single-chip microcomputer IC10 (8) module from MODEM chip IC 15 (9) modules, its the 3rd pin with from MODEM chip IC 15 (9) modules the 27th with the 1st pin parallel connection after be connected, its the 4th pin lead up to capacitor C 18 be connected with the 10th pin the back ground connection, another road is connected with the 5th pin by crystal oscillator Y1, its the 5th pin lead up to capacitor C 17 back ground connection, another road is connected with an end of capacitor C 18 by crystal oscillator Y1, lead up to from the output of the 1st pin of single-chip microcomputer IC10 (8) module and to meet power supply VCC after capacitor C 11 connects, another road connects back ground connection by resistance R 6, and one the tunnel is connected with the 13rd pin from MODEM chip IC 15 (9) modules again;
Be connected in series a crystal oscillator Y2 between the 24th pin of MODEM chip IC 15 (9) modules and the 23rd pin, the end of crystal oscillator Y2 connects back ground connection by a capacitor C 9, the other end also connects back ground connection by another capacitor C 10, it is the 6th years old, 25 are connected with power supply VCC with 29 pins back connected with each other, it is the 26th years old, 5 and 22 pins back connected with each other ground connection, its the 15th pin is connected with aanalogvoltage VPA end, the 21st pin is connected with simulation ground VNA end, the 18th pin is connected with simulation ground VNA end by capacitor C 12, the 19th pin is connected with simulation ground VNA end by capacitor C 13, and the 14th pin is connected with power supply VCC; Its 20th pin is connected by the serial connection point of resistance R 8 and capacitor C 14, be connected with the 3rd, 4 ends of isolating transformer T2 with the coupling circuit of capacitor C 14 by resistance R 8 between its 17th, 16 pin, be connected with the base stage that detects ringing relay IC circuit 14 (14) module triode Q2 by resistance R 22 from the 3rd pin of MODEM chip IC 15 (9) modules, its 2nd pin is connected with the 5th end that detects ring optocoupler circuit IC13 (13) module; Secondary the 2nd end of isolating transformer T2 is connected with the 1st end of the socket J2 that detects ring optocoupler circuit IC13 (13) module, and secondary the 1st end is connected with the 4th pin that detects ringing relay IC circuit 14 (14) modules;
Detect the 4th end ground connection of ring optocoupler circuit IC13 (13) module, secondary the 1st end is connected with the 1st end of socket J2 by resistance R 13, secondary the 2nd end is connected with the 2nd end of socket J2 by capacitor C 16, and the output of socket J2 is connected with telephone wire;
Detecting a road of ringing relay IC circuit 14 (14) module the 1st pins is connected with power supply VCC, another road is connected with the emitter of triode Q2 by diode D3, the grounded collector of triode Q2, the 5th pin is connected with the 2nd end of socket J2, and its 10th pin is connected with the emitter of triode Q2.
5, a kind of data transmission method of compound intelligence storage data communication modulator-demodulator, it is characterized in that: this method is by the host scm operating circuit, from the single-chip microcomputer operating circuit with carry out the power supply managing of inside and outside two kinds of powering modes in circuit, be implemented in synchronization and carry out receiving and sending of data and error check calculation, it comprises: the host scm workflow reaches the data transmission method from the single-chip microcomputer workflow, wherein:
The concrete steps of host scm workflow are:
Step 1. beginning A (31)
Host scm begins the starting of A (31) module;
Step 2. detects and judges
Whether effectively the output signal transmission that host scm begins A (31) module enters MODEMIC2 the detection signal detection and the judge module of (32);
If detect useful signal, then enter off-hook, notice host scm IC1 received signal (33) module;
If do not detect useful signal, then whether effectively feedback enters MODEMIC2 the detection signal detection and the judge module of (32);
Step 3. receives and handles
Off-hook, the output signal of notice host scm IC1 received signal (33) module transmits and enters host scm IC1 process data signal (34) module, and host scm IC1 carries out error check calculation to receiving the signal that comes;
Step 4. verification and judgement
Does the output signal of host scm IC1 process data signal (34) module transmit that to enter verification correct? (35) module;
If verification is correct, then enter and write exterior storage chip IC 5, send out on-hook letter (37) module, data are write a memory circuit IC5 (5) and another memory circuit IC6 (15) module;
If check errors then enters and abandons data, send out on-hook signal A (36) module and feed back to main MODEM chip IC 2 (2) modules;
Step 5. data are sent into host computer
Write exterior storage chip IC 5, the output signal transmission of sending out on-hook letter (37) module enters data and send host computer A (38) module;
Step 6. finishes
Data are sent the output signal of host computer A (38) module to transmit and are entered and finish A (39).
6, the data transmission method of a kind of compound intelligence storage data communication modulator-demodulator according to claim 5, it is characterized in that: described from the single-chip microcomputer operating circuit need be from single-chip microcomputer IC10 (8) to the available serial ports of host scm IC1 (1) application, from the concrete steps of single-chip microcomputer workflow be:
Step 1. beginning B (41)
Begin the starting of B (41) module from single-chip microcomputer;
Step 2. detects and judges
Whether effectively the output signal transmission that begins B (41) module from single-chip microcomputer enters MODEMIC15 the detection signal detection and the judge module of (42);
If detect useful signal, then enter off-hook, notice is from single-chip microcomputer IC10 received signal (43) module;
If do not detect useful signal, then whether effectively feedback enters MODEMIC15 the detection signal detection and the judge module of (42);
Step 3. receives and handles
Off-hook, notice transmit to enter to send from single-chip microcomputer IC10 from the output signal of single-chip microcomputer IC10 received signal (43) module handles (44) module, carries out error check calculation from single-chip microcomputer IC10 to receiving the signal that comes;
Step 4. verification and judgement
Send the output signal of handling (44) module from single-chip microcomputer IC10 to transmit to enter data check correct? (45) module;
If verification is correct, then enter and write exterior storage chip IC 12, send out on-hook letter (47) module, data are write an external memory IC circuit 12 (22) and another external memory IC circuit 11 (21) modules;
If check errors then enters and abandons data, send out on-hook signal B (46) module and feed back to from MODEM chip IC 15 (9) modules;
Please step 5. is judged the communication serial port success to host scm?
Write exterior storage chip IC 12, the output signal of sending out on-hook letter (47) module transmits to enter to host scm asks communication serial port success (48) judge module;
If ask the communication serial port success, then enter the transmission data and send host computer B (49) module to host scm;
If please not have success by communication serial port to host scm, then feedback enters the input of asking communication serial port success (48) to host scm, wait application next time;
Step 6. finishes
Data are sent the output signal of host computer B (49) module to transmit and are entered and finish B (50).
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100308174A CN100550956C (en) | 2005-10-28 | 2005-10-28 | A kind of compound intelligence storage data communication modulator-demodulator and data transmission method thereof |
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| CNB2005100308174A CN100550956C (en) | 2005-10-28 | 2005-10-28 | A kind of compound intelligence storage data communication modulator-demodulator and data transmission method thereof |
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| CN100550956C CN100550956C (en) | 2009-10-14 |
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|---|---|---|---|---|
| CN111366880A (en) * | 2020-04-03 | 2020-07-03 | 深圳市超力源科技有限公司 | Circuit for intelligently identifying whether battery is connected or not |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366880A (en) * | 2020-04-03 | 2020-07-03 | 深圳市超力源科技有限公司 | Circuit for intelligently identifying whether battery is connected or not |
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