CN108808788B

CN108808788B - Miniaturized B-ultrasonic single-chip microcomputer control device and system thereof

Info

Publication number: CN108808788B
Application number: CN201810693487.4A
Authority: CN
Inventors: 李元强; 黄仲军; 兰家富; 李青松; 刘锦扬
Original assignee: Shenzhen WellD Medical Electronics Co ltd
Current assignee: Shenzhen WellD Medical Electronics Co ltd
Priority date: 2018-06-29
Filing date: 2018-06-29
Publication date: 2021-07-16
Anticipated expiration: 2038-06-29
Also published as: CN108808788A

Abstract

The invention discloses a miniaturized B-ultrasonic single-chip microcomputer control device and a system thereof, wherein the B-ultrasonic single-chip microcomputer control device comprises a charging circuit, a single-chip microcomputer control circuit, a B-ultrasonic main board and a PC system; the charging circuit converts the power voltage input by the adapter into charging current to charge the battery, automatically switches the power supply of the adapter and the power supply of the battery according to the input state of the power supply, and feeds back a working state signal to the singlechip control circuit; the singlechip control circuit samples the working state signal and controls the on and off of the built-in indicator light; the singlechip control circuit controls the key board to connect the main power source to the B-mode mainboard and the PC system according to a starting switch signal input by the key board; the singlechip control circuit is in handshake communication with the PC system, and outputs the working state signal, the probe signal of the probe and the key signal of the key board to the PC system for display after format conversion. Compared with the existing B ultrasonic single-chip microcomputer control system, partial circuits and interfaces are omitted, and the circuits are simpler.

Description

Miniaturized B-ultrasonic single-chip microcomputer control device and system thereof

Technical Field

The invention relates to the technical field of electronics, in particular to a miniaturized B-mode ultrasonic single-chip microcomputer control device and a system thereof.

Background

As shown in fig. 1, an adapter transmits a commercial power to a charging circuit to charge a battery, an electric quantity acquisition circuit acquires an electric quantity value of the battery and transmits the electric quantity value to a pc (personal computer) system, a power supply switching circuit can select whether the commercial power directly outputs a power supply voltage to supply power or the battery supplies the power supply voltage, and a main switch transmits the power supply voltage to a B-mode ultrasonic main board and an indication system. The key board outputs corresponding key values to the PC system according to key operation of a user, and the probe transmits images acquired by the key board to the PC system. The indicating system realizes standby indication, charging indication and full indication according to the on-off states of different LED lamps. As can be seen from fig. 1, the conventional B-mode ultrasonic single-chip microcomputer control system has the disadvantages of relatively complex circuit, more used electronic devices, relatively complex PCB design and relatively high cost.

Thus, the prior art has yet to be improved and enhanced.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention is directed to a miniaturized B-mode ultrasonic single-chip microcomputer control device and system thereof, so as to solve the problem of relatively complex circuit of the conventional B-mode ultrasonic single-chip microcomputer control system.

In order to achieve the purpose, the invention adopts the following technical scheme:

a miniaturized B-ultrasonic single-chip microcomputer control device which is connected with an adapter, a battery, a key board and a probe comprises: the system comprises a charging circuit, a singlechip control circuit, a B-ultrasonic mainboard and a PC system;

the charging circuit converts the power voltage input by the adapter into charging current to charge the battery, automatically switches the power supply of the adapter and the power supply of the battery according to the input state of the power supply, and feeds back a working state signal to the singlechip control circuit;

the singlechip control circuit samples the working state signal and controls the on and off of the built-in indicator lamp so as to display the current working state; the singlechip control circuit controls the key board to connect the main power source to the B-mode mainboard and the PC system according to a starting switch signal input by the key board; the singlechip control circuit is in handshake communication with the PC system, and outputs the working state signal, the probe signal of the probe and the key signal of the key board to the PC system for display after format conversion.

In the miniaturized B-ultrasonic microcomputer control device, the charging circuit includes a charging unit and a state detection unit:

the charging unit converts the power voltage into charging current to charge the battery and switches the charging current to supply power to the adapter when detecting the access of the adapter; switching to battery power supply when detecting that no adapter is accessed;

the state detection unit generates a charging detection signal corresponding to the level according to the charging current output by the charging chip, generates an adapter detection signal corresponding to the level according to the on-off state of the adapter, and also acquires the current electric quantity of the battery and generates a battery electric quantity detection signal corresponding to the level.

In the miniaturized B-mode ultrasonic singlechip control device, the state detection unit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first capacitor, a second capacitor and a third capacitor;

the one end of second resistance and the output of charging unit are connected to the one end of first resistance, the one end and the single chip microcomputer control circuit of first electric capacity are connected to the other end of first resistance, the other end of second resistance and the other end of first electric capacity are all ground connection, the power input end of adapter is connected to the one end of third resistance, the one end of fourth resistance and the one end of fifth resistance are connected to the other end of third resistance, the one end and the single chip microcomputer control circuit of second electric capacity are connected to the other end of fifth resistance, the other end of fourth resistance and the other end of second electric capacity are all ground connection, the battery is connected to the one end of sixth resistance, the one end of seventh resistance and the one end of eighth resistance are connected to the other end of sixth resistance, the one end and the single chip microcomputer control circuit of third electric capacity are connected to the other end of eighth resistance, the other end of seventh resistance and the.

In the miniaturized B-ultrasonic single-chip microcomputer control device, the single-chip microcomputer control circuit comprises a single-chip microcomputer, an indicating unit and a communication unit;

the single chip microcomputer samples the working state signal and outputs a corresponding state indicating signal to control the on and off of a corresponding indicating lamp in the indicating unit;

the singlechip outputs a main switch signal according to a start switch signal input by the key board to control the key board to be conducted so as to output a main power supply to the B-mode ultrasonic mainboard and the PC system;

the single chip microcomputer is also in handshake communication with the PC system through the communication unit, and the communication unit performs format conversion on the working state signal, the probe signal of the probe and the key signal of the key board and outputs the signals to the PC system for display.

In the miniaturized B-ultrasonic single-chip microcomputer control device, the model of the single-chip microcomputer is STC15W401AS, and the 1 st pin, the 7 th pin and the 16 th pin of the single-chip microcomputer are all connected with an indicating unit; the other end of first resistance is connected to the 3 rd foot of singlechip, the other end of eighth resistance is connected to the 4 th foot of singlechip, the 2 nd foot and the 5 th foot of singlechip are all connected the probe, the power supply end is connected to the 6 th foot of singlechip, the communication unit is all connected to the 9 th foot, the 10 th foot and the 13 th foot of singlechip, the keypad is all connected to the 11 th foot and the 15 th foot of singlechip, the other end of fifth resistance is connected to the 12 th foot of singlechip, the battery end is connected to the 14 th foot of singlechip.

In the miniaturized B-ultrasonic singlechip control device, the indicating unit comprises a ninth resistor, a tenth resistor, an eleventh resistor, a charging indicator lamp, a full indicator lamp and a standby indicator lamp;

the positive electrode of the charging indicator lamp is connected with the positive electrode of the full indicator lamp, the positive electrode of the standby indicator lamp and the power supply end; the negative pole of charge pilot lamp passes through the 1 st foot of ninth ohmic connection singlechip, and the negative pole that is full of the pilot lamp passes through the 16 th foot of tenth ohmic connection singlechip, and the 7 th foot of eleventh ohmic connection singlechip is passed through to the negative pole of standby pilot lamp.

In the miniaturized B-mode ultrasonic singlechip control device, the communication unit comprises an interface, a communication chip, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fourth capacitor and a fifth capacitor;

the REGIN pin of the communication chip is grounded through a fifth capacitor, and the REGIN pin of the communication chip is also connected with the 1 st pin of the interface, the/RST pin and the VBUS pin of the communication chip; the VDD pin of the communication chip is grounded through a fourth capacitor, the D + pin of the communication chip is connected with the 3 rd pin of the interface, the D-pin of the communication chip is connected with the 2 nd pin of the interface, the TXD pin of the communication chip is connected with the 9 th pin of the single chip microcomputer through a thirteenth resistor, the RXD pin of the communication chip is connected with the 10 th pin of the single chip microcomputer through a fourteenth resistor, and the 1 st pin of the interface is connected with the 13 th pin of the single chip microcomputer through a twelfth resistor.

A miniaturized B-ultrasonic single-chip microcomputer control system comprises an adapter, a battery, a probe, a key board and the B-ultrasonic single-chip microcomputer control device;

the B-mode ultrasonic singlechip control device charges a battery according to the power supply voltage input by the adapter, selects the adapter to supply power or the battery to supply power according to the access state of the adapter, and controls the on and off of the built-in indicator lamp according to the current working state so as to display the current working state;

the B-ultrasonic single-chip control device controls the key board to output a main power supply to the B-ultrasonic mainboard and the PC system according to a starting switch signal input by the key board; after handshaking communication with the PC system, the working state signal, the probe signal of the probe and the key signal of the key board are output to the PC system for display.

In the miniaturized B-mode ultrasonic single-chip microcomputer control system, a starting switch circuit of the key board comprises a starting key, an MOS (metal oxide semiconductor) tube, a triode, a fifteenth resistor, a sixteenth resistor and a seventeenth resistor;

the 1 st pin and the 3 rd pin of the starting key are both ground; the 2 nd pin of the start key is connected with the 4 th pin of the start key, one end of a fifteenth resistor and the B-mode ultrasonic singlechip control device; the other end of the fifteenth resistor is connected with the B-ultrasonic single-chip microcomputer control device, a source electrode of the MOS tube and one end of the sixteenth resistor, a grid electrode of the MOS tube is connected with the other end of the sixteenth resistor and a collector electrode of the triode, a drain electrode of the MOS tube is connected with a main power supply end, and a base electrode of the triode is connected with the B-ultrasonic single-chip microcomputer control device through the seventeenth resistor.

Compared with the prior art, the miniaturized B-ultrasonic single chip microcomputer control device and the system thereof provided by the invention have the advantages that: the system comprises a charging circuit, a singlechip control circuit, a B-ultrasonic mainboard and a PC system; the charging circuit converts the power voltage input by the adapter into charging current to charge the battery, automatically switches the power supply of the adapter and the power supply of the battery according to the input state of the power supply, and feeds back a working state signal to the singlechip control circuit; the singlechip control circuit samples the working state signal and controls the on and off of the built-in indicator lamp so as to display the current working state; the singlechip control circuit controls the key board to connect the main power source to the B-mode mainboard and the PC system according to a starting switch signal input by the key board; the singlechip control circuit is in handshake communication with the PC system, and outputs the working state signal, the probe signal of the probe and the key signal of the key board to the PC system for display after format conversion. Compared with the existing B ultrasonic single-chip microcomputer control system, partial circuits and interfaces are omitted, and the circuits are simpler.

Drawings

FIG. 1 is a schematic diagram of a conventional B-mode ultrasonic single-chip microcomputer control system.

FIG. 2 is a block diagram of a miniaturized B-mode ultrasonic single-chip microcomputer control system provided by the present invention.

Fig. 3 is a circuit diagram of a charging unit in the charging circuit provided by the present invention.

Fig. 4 is a circuit diagram of a state detection unit in the charging circuit provided by the present invention.

Fig. 5 is a circuit diagram of a single chip microcomputer in the single chip microcomputer control circuit provided by the invention.

Fig. 6 is a circuit diagram of an indicating unit in the single chip microcomputer control circuit provided by the invention.

Fig. 7 is a circuit diagram of a communication unit in the single chip microcomputer control circuit provided by the invention.

Fig. 8 is a circuit diagram of a key sheet according to the present invention.

Detailed Description

The invention provides a miniaturized B-mode ultrasonic single-chip microcomputer control device and a system thereof, which improve the circuit of the traditional B-mode ultrasonic single-chip microcomputer control device, save partial functional circuits and replace the partial functional circuits with more simplified circuits, thereby reducing corresponding circuit modules and electronic devices and saving cost. In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 2, the miniaturized B-mode ultrasonic single-chip microcomputer control system according to the embodiment of the present invention includes a B-mode ultrasonic single-chip microcomputer control device, a 19V adapter, a battery, a keypad, and a probe. The B-ultrasonic single-chip microcomputer control device comprises a charging circuit 10, a single-chip microcomputer control circuit 20, a B-ultrasonic main board 30 and a PC system 40. The charging circuit 10 is connected with the singlechip control circuit 20, the adapter, the battery and the key board, the singlechip control circuit 20 is connected with the key board, the PC system 40 and the probe, and the B-mode ultrasonic main board 30 is connected with the PC system 40 and the key board.

The charging circuit 10 converts the 19V power voltage AVDD input by the adapter into a charging current to charge the battery. The charging circuit 10 automatically switches between adapter power supply and battery power supply according to the power input state, and also feeds back the operating state signal (including the charging detection signal CSD, the adapter detection signal AD, and the battery level detection signal BT) to the single chip microcomputer control circuit 20. The single chip microcomputer control circuit 20 performs AD sampling on the working state signal and controls the on/off of the built-in indicator lamp to display the current working state. The keypad detects that the START key is pressed, and outputs a START switch signal SOFT _ START _ S, and the single chip microcomputer control circuit outputs a MAIN switch signal MAIN _ S according to the START switch signal SOFT _ START _ S to control the keypad to switch on a MAIN power supply MP _ OUT to the B-mode MAIN board 30 and the PC system 40. After entering the ultrasonic interface, the PC system 40 performs handshake communication with the mcu 20, and the mcu 20 performs format conversion on the operating status signal, the probe signal fed back from the probe (including the identification signal probe (whether the probe is plugged) and the type identification signal one _ wrie) and the key signal of each key on the keypad, and outputs a data signal to the PC system 40 for display.

Compared with the conventional B-ultrasonic single-chip microcomputer control system, the control system saves a power supply switching circuit and a power acquisition circuit, and a charging circuit is used for switching between adapter power supply and battery power supply; meanwhile, a corresponding battery electric quantity detection signal is directly output from the charging circuit to the single chip microcomputer control circuit for sampling and displaying. In the embodiment, a soft start circuit (currently controlled by an LTC2954 chip) is omitted, and the on of the main power supply MP _ OUT is directly controlled by a single chip microcomputer control circuit according to a start key on a key board. In the embodiment, an indicating system (consisting of an LM358 comparison circuit) is omitted, and the indicating part is directly controlled by a single chip microcomputer to control the corresponding indicating lamp.

The embodiment reduces the interface of the existing PC system and removes the interface connected with the key board and the probe. Because the interface is few, do not have RS232 interface again, avoid needing to carry out the problem that the extension leads to the circuit complicacy with USB-HUB. Signals of the probe and the key board are directly processed by the singlechip control circuit and then uploaded to the PC system through a single RS232 interface or a USB interface (namely, data signal interactive communication is carried out between the PC system and the singlechip control circuit through TXD _ MCU and RXD _ MCU), so that the circuit layout is simpler.

The circuit structure of the existing B-ultrasonic single-chip microcomputer control system is recombined and improved, the whole ultrasonic control system is optimized, and the circuit is simpler, the cost is reduced, the debugging is convenient, the usability is high, and the production is convenient.

Referring to fig. 3 and 4, the charging circuit 10 includes a charging unit 110 and a state detecting unit 120; the charging unit 110 is connected with the state detection unit 120, the adapter, the battery and the keypad; the charging unit 110 converts the power voltage into a charging current to charge the battery, and switches the charging current to supply power to the adapter when detecting the adapter is accessed; and switching to battery power supply when no adapter is connected. The state detection unit 120 generates a charging detection signal CSD corresponding to a level according to the charging current output by the charging chip U1, generates an adapter detection signal AD corresponding to a level according to the on/off state of the adapter, obtains the current electric quantity of the battery, and generates a battery electric quantity detection signal BT corresponding to a level.

In this embodiment, the charging unit 110 includes a charging chip U1 with a model of MAX1873, a switching tube Qa (model SI4459 ADY), an inductor L, a first resistor Ra1, a second resistor Ra2, a third resistor Ra3, a first filter capacitor Ca1, a second filter capacitor Ca2, a third filter capacitor Ca3, and a fourth filter capacitor Ca 4; the DCIN pin of the charging chip U1 is connected with the output end DC _ IN of the adapter, one end of the first resistor Ra1 and the CSSP pin of the charging chip U1; the IOUT pin of the charging chip U1 is connected to the output terminal (for outputting the supply voltage MAX _ OUT) of the charging unit, one end of the third resistor Ra3 and one end of the second filter capacitor Ca2, and the other end of the third resistor Ra3 is connected to the other end of the second filter capacitor Ca2 and the ground through the first filter capacitor Ca 1; the CSSN pin of the charging chip U1 is connected with the other end of the first resistor Ra1, the 1 st pin of the switch tube Qa and the LOAD end SYSTEM _ LOAD; the 1 st pin of the switch tube Qa is connected with the 2 nd pin and the 3 rd pin of the switch tube Qa, the EXT pin of the charging chip U1 is connected with the 4 th pin of the switch tube Qa, the 5 th pin, the 6 th pin and the 7 th pin of the switch tube Qa are connected with the 8 th pin of the switch tube Qa and one end of the inductor L, the other end of the inductor L is connected with one end of the second resistor Ra2, the CSB pin of the charging chip U1 and one end of the third filter capacitor Ca3, the other end of the second resistor Ra2 is connected with the battery terminal (corresponding to the battery voltage BAT), the BAT pin of the charging chip U1 and one end of the fourth filter capacitor Ca4, and the other end of the third filter capacitor Ca3 and the other end of the fourth filter capacitor Ca4 are all grounded.

The charging chip U1 converts the 19V power voltage AVDD (input from DC _ IN fig. 3) input from the adapter into a charging current, and the EXT pin controls the switch tube Qa to open a path between the charging chip U1 and the battery so as to charge the battery. When the charging chip U1 detects that the adapter is connected, the adapter is switched to supply power, that is, the 19V power supply voltage AVDD is converted into the supply voltage MAX _ OUT and output from the IOUT pin, and the supply voltage MAX _ OUT corresponds to the charging current MAX _ IOU, that is, the charging current MAX _ IOU is also output from the IOUT pin. If the charging chip U1 detects that the DCIN pin has no power supply voltage AVDD input, the adapter-free access is identified, the charging chip U1 is automatically switched to battery power supply, namely, the battery terminal BAT provides voltage for the charging chip U1, and the voltage is converted into power supply voltage MAX _ OUT and then output. The three resistors Ra3, the first filter capacitor Ca1 and the second filter capacitor Ca2 filter and stabilize the supply voltage MAX _ OUT. The LOAD terminal SYSTEM _ LOAD indicates that the entire controlled rear SYSTEM (LOAD), i.e., the entire ultrasound control SYSTEM, is connected.

In this embodiment, the state detection unit 120 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first capacitor C1, a second capacitor C2, and a third capacitor C3; one end of the first resistor R1 is connected to one end of the second resistor R2 and the output end of the charging unit 110, the other end of the first resistor R1 is connected to one end of the first capacitor C1 and the one-chip microcomputer control circuit 20, the other end of the second resistor R2 and the other end of the first capacitor C1 are both grounded, one end of the third resistor R3 is connected to the power input end (input power voltage AVDD) of the adaptor, the other end of the third resistor R3 is connected to one end of the fourth resistor R4 and one end of the fifth resistor R5, the other end of the fifth resistor R5 is connected to one end of the second capacitor C2 and the one-chip microcomputer control circuit 20, the other end of the fourth resistor R4 and the other end of the second capacitor C2 are both grounded, one end of the sixth resistor R6 is connected to the battery (input battery voltage BAT), the other end of the sixth resistor R6 is connected to one end of the seventh resistor R7 and one end of the eighth resistor R8, the other end of the eighth resistor R8 is connected to one-chip microcomputer control, the other end of the seventh resistor R7 and the other end of the third capacitor C3 are both grounded.

In this embodiment, the first resistor R1, the second resistor R2 and the first capacitor C1 form a charging state detection circuit; if the charging chip U1 is charging, the output charging current MAX _ IOU generates a charging detection signal CSD of a corresponding level through the charging state detection circuit, and if there is no charging current MAX _ IOU, the charging detection signal CSD is at a low level or 0V; the mcu control circuit 20 can determine whether the charging is in progress according to the level value of the charging detection signal CSD. The third resistor R3, the fourth resistor R4, the fifth resistor R5 and the second capacitor C2 form an adapter detection circuit. When the adapter is connected, the power voltage AVDD is input, and the adapter detection signal AD with the corresponding level is output after the adapter detection circuit divides the voltage; if no adapter is accessed, the adapter detection signal AD is low level or 0V; the mcu 20 can determine whether an adapter is connected according to the level value of the adapter detection signal AD. A battery capacity detection circuit is formed by the sixth resistor R6, the seventh resistor R7, the eighth resistor R8 and the third capacitor C3, and a battery capacity detection signal BT with a corresponding level is generated according to the current battery voltage BAT of the battery; the mcu 20 recognizes the current remaining battery capacity according to the level of the battery capacity detection signal BT.

Referring to fig. 5, fig. 6 and fig. 7, the single chip microcomputer control circuit 20 includes a single chip microcomputer U2, an indicating unit 210 and a communication unit 220; the single chip microcomputer U2 samples the working state signal and outputs a corresponding state indicating signal to control the on and off of a corresponding indicating lamp in the indicating unit 210; the singlechip outputs a main switch signal according to a start switch signal input by the key board to control the key board to be conducted so as to output a main power supply to the B-mode ultrasonic mainboard and the PC system; the single chip microcomputer is also in handshake communication with the PC system through the communication unit 220, and the communication unit 220 performs format conversion on the working state signal, the probe signal of the probe and the key signal of the key board and outputs the signals to the PC system for display.

The single chip microcomputer U2 can adopt a serial chip with the model of STC15W401AS, the specific selectable model is STC15W401AS _ SOP16_ DIP16, and the 1 st pin (P1.2/ADC 2/SS/ECI/CMPO), the 7 th pin (P5.5/CMP +), and the 16 th pin (P1.0/ADC 1/CCP 0) of the single chip microcomputer U2 are all connected with the indicating unit 210; pin 3 of single chip microcomputer U2 (P1.4/ADC 4/MI)SO) is connected with the other end of the first resistor R1, a4 th pin (P1.5/ADC 5/SCLK) of the singlechip U2 is connected with the other end of the eighth resistor R8, a2 nd pin (P1.3/ADC 3/MOSI) and a 5 th pin (P5.4/RST/MCLKO/CMP-) of the singlechip U2 are both connected with the probe, a 6 th pin (Vcc) of the singlechip U2 is connected with a power supply terminal (+ 3.3V), and a 9 th pin (Vcc) of the singlechip U2

) The 10 th pin (P3.1/TXD/T2) and the 13 th pin (

) The communication units 220 are connected, the 11 th pin (P3.2/INT 0) and the 15 th pin (P1.0/ADC 0/CCP 1) of the singlechip U2 are connected with a keypad, the 12 th pin (P3.3/INT 1) of the singlechip U2 is connected with the other end of the fifth resistor R5, and the 14 th pin (R5) of the singlechip U2

) The battery terminal is connected. The 2 nd pin (P1.3/ADC 3/MOSI) of the singlechip U2 is suspended (NC reserved), and the 8 th pin (Gnd) of the singlechip U2 is grounded. The 9 th pin and the 10 th pin of the singlechip U2 are serial port communication pins and are used for communicating with a host; and the 13 th pin is used for detecting whether the USB is plugged.

The indicating unit 210 (as shown in fig. 6) includes a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a charge indicator LED1, a full indicator LED2 and a standby indicator LED 3; the anode of the charging indicator light LED1 is connected with the anode of the full indicator light LED2, the anode of the standby indicator light LED3 and a power supply terminal (+ 3.3V); the negative pole of charge pilot lamp LED1 passes through ninth resistance R9 and connects the 1 st foot of singlechip U2, and the negative pole that full indicator LED2 passes through tenth resistance R10 and connects the 16 th foot of singlechip U2, and the negative pole of standby indicator lamp LED3 passes through eleventh resistance R11 and connects the 7 th foot of singlechip U2.

The communication unit 220 (as shown in fig. 7) includes an interface J1, a communication chip U3 (model CP 2101), a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fourth capacitor C4 and a fifth capacitor C5; the REGIN pin of the communication chip U3 is grounded through a fifth capacitor C5, and the REGIN pin of the communication chip U3 is also connected with the 1 st pin of the interface J1, the/RST pin of the communication chip U3 and the VBUS pin; the VDD pin of the communication chip U3 is grounded through a fourth capacitor C4, the D + pin of the communication chip U3 is connected with the 3 rd pin of the interface J1, the D-pin of the communication chip U3 is connected with the 2 nd pin of the interface J1, the TXD pin of the communication chip U3 is connected with the 9 th pin of the singlechip U2 through a thirteenth resistor R13, the RXD pin of the communication chip U3 is connected with the 10 th pin of the singlechip U2 through a fourteenth resistor R14, and the 1 st pin of the interface J1 is connected with the 13 th pin of the singlechip U2 through a twelfth resistor R12.

In this embodiment, the start switch circuit on the keypad is improved to be adapted to the single chip microcomputer control circuit 20, please refer to fig. 8, where the start switch circuit includes a start key K1, a MOS transistor Q1 (PMOS), a triode Q2 (NPN), a fifteenth resistor R15, a sixteenth resistor R16, and a seventeenth resistor R17; the 1 st pin and the 3 rd pin of the starting key K1 are both ground; a2 nd pin of the starting key K1 is connected with a4 th pin of the starting key K1, one end of a fifteenth resistor R15 and an 11 th pin of the single chip microcomputer U2; the other end of the fifteenth resistor R15 is connected to the output end of the charging unit 110, the source of the MOS transistor Q1 and one end of the sixteenth resistor R16, the gate of the MOS transistor Q1 is connected to the other end of the sixteenth resistor R16 and the collector of the transistor Q2, the drain of the MOS transistor Q1 is connected to the main power supply terminal (outputting the main power supply MP _ OUT), and the base of the transistor Q2 is connected to the 15 th pin of the single chip microcomputer U2 through the seventeenth resistor R17.

In this embodiment, the single chip microcomputer U2 respectively performs AD sampling on the charging detection signal CSD, the adapter detection signal AD, and the battery level detection signal BT and outputs corresponding status indication signals (including the charging indication signal CI, the full charge indication signal FOE, and the STANDBY indication signal STANDBY). The method specifically comprises the following steps: if the charging detection signal CSD has a level value, outputting a high-level charging indication signal CI; if the adapter detection signal AD or the battery capacity detection signal BT has a level value, a high-level STANDBY indication signal STANDBY is output, and if the level value of the battery capacity detection signal BT reaches an upper limit value, a high-level full indication signal FOE is output; otherwise, a low level or 0V is output. When the charging indication signal CI, the full-charge indication signal FOE and the STANDBY indication signal STANDBY are at a high level, the corresponding charging indication lamp LED1, the full-charge indication lamp LED2 and the STANDBY indication lamp LED3 are turned on; otherwise, the lamp is extinguished. Therefore, the current working state of the B-mode single chip microcomputer control device can be conveniently judged by a user according to the on-off of the indicator lamp.

When the keypad detects that the START key K1 is pressed (the

pins

2 and 3 are pulled low), a low START switch signal SOFT _ START _ S is output, and when the keypad detects that the START key K1 is released, the keypad bounces back to a high level, and the START is triggered at a low level. The single chip microcomputer control circuit outputs a high-level MAIN switching signal MAIN _ S to control the conduction of the triode Q2 according to a low-level starting switching signal SOFT _ START _ S, so that the grid of the MOS tube Q1 is pulled down, the MOS tube Q1 is conducted, and the power supply voltage MAX _ OUT is converted into a MAIN power supply MP _ OUT through the MOS tube Q1 and is output to the B-mode ultrasonic MAIN board 30 and the PC system 40 for power supply.

The signal output by the single chip microcomputer can be output to a PC system only after being converted into a serial port through a USB. All data signals required to be output by the singlechip are transmitted to the communication chip U3 through the signal line TXD _ MCU for format conversion, and are output to the PC system 40 from the interface J1 through the signal lines USB _ DP _ IN and USB _ DM _ IN. All output data signals of the PC system 40 are input through an interface J1, transmitted to a communication chip U3 through signal lines USB _ DP _ IN and USB _ DM _ IN for format conversion, and transmitted to the singlechip through a signal line RXD _ MCU.

In this embodiment, after the single chip is powered on, the single chip performs port initialization, that is, initialization of each peripheral interface, including initialization of serial port communication of the interface J1 and initialization of the AD port (that is, each pin connected to the state detection unit 120). After the initialization is finished, the interrupt is started, and then the main program is entered.

And the PC system 40 enters the ultrasonic interface and then performs handshake communication with the singlechip. And USB power-down detection (realizing synchronous power-down of the whole USB power-down system), startup and shutdown key detection (realizing a startup and shutdown function), working state detection, probe identification and key switching are carried out in the working process.

When the single chip microcomputer detects the working state, AD sampling is carried out on working state signals, various states are indicated through the indicating lamps, and electric quantity information is transmitted to the PC system through the serial port. After the single chip microcomputer identifies the probe (identifies the type of the probe), the identification signal probe of the probe, the type identification signal one _ wrie on the probe, the working state signal and the key signal of each pressed key on the key board are output to the PC system 40 for display after format conversion through the communication chip U3.

The program codes for port initialization, handshake protocol, on/off key detection, working state detection, probe identification and key switching are as follows.

void main (void)/. Main program

// Port initialization

{ bit kaiji_bs=0;

uchar zz,zz1;

Setting push-pull output, and only requiring the corresponding position 1 of P M0 register

P1M0=B0000_0110;

P5M0=B0011_0000;

P3M1=B1100_1100;

P3M0=B0000_1000;

KaiJi_KZ=0;

CongMan _ LED = 0// full indicator light

CongDian _ LED = 0// charging indicator light

The working indicator light does not occupy the pin of the single chip, and the working indicator light can be deleted, DaiJi _ LED = 0;/standby indicator light

UartInit();

InitADC(); //Init ADC sfr

Timer0Init (),/50 msec @11.0592MHz

EA =1, opening a total interrupt after initialization is completed

send_UART_one(0x55);

while(1)

{

if (wosou _ bs = =1)// handshake identification

{wosou_bs=0;

send_UART_one(0xEE);

send_UART_one(0xEF);

}

v/USB Power-off

if((USB_JianCe==0)&&(kaiji_bs==1))

{Delay3000ms();

if(USB_JianCe==0){KaiJi_KZ=0;kaiji_bs=0;}

}

// power on/off (automatic off for long press over 5 seconds)

if(KaiJi_JianCe==0)

{Delay500ms();

if(KaiJi_JianCe==0)

{

if(KaiJi_KZ==0)

{KaiJi_KZ=1;kaiji_bs=1;}

else

{

send _ UART _ one (95)/send shutdown command

}

while(KaiJi_JianCe==0)

{

Delay50ms();

zz++;

if(zz>100)

{

zz=0;

KaiJi_KZ=0;kaiji_bs=0;

Delay500ms();

break;

}

/////////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////, in P1.4 battery charge status foot

// 1.0 XD1- -PC queries for battery status

//2. backhaul protocol

// first byte 0XFE (254) -charged state/0 XFD (253) -non-charged state

// second byte electric quantity value

// GongZuo _ LED =0, working condition of working indicator lamp

if(kaiji_bs==1)GongZuo_LED=1;

else GongZuo_LED=0;

// DaiJi _ LED =0, standby indicator lamp operating condition

if((power_JianCe==1)&&(kaiji_bs==0))DaiJi_LED=1;

else DaiJi_LED=0;

// CongDian _ LED = 0// charging indicator lamp operating condition

if((CongDian_bs==1)&&(DianCi_JianCe==1)&&(power_JianCe==1))CongDian_LED=1;

else CongDian_LED=0;

// CongMan _ LED = 0// full indicator lamp operating condition

if ((CongMan _ bs = =1) & (Dianci _ JeanCe = =1) & (power _ JeanCe = =1)) CongMan _ LED = 1;/full indicator light

else CongMan_LED=0;

////////////////////////////////////////////////////////////////////////////////

if(s1_bs==1)

{

s1_bs=0;

if ((getadc result (4) >10) & & (DianCi _ JianCe = =1))// circuit is in a charged state

{

CongDian_bs=1;CongMan_bs=0;

zz1= GetADCCresult (5)// charge detection; display ADC-P1.5

if (zz1>250) zz1= 250// reserve transport protocol header marker

////////////////////////////////////////////

// full cell voltage: 0, tape adapter: 3.12-F1

//1, without adapter: 3.0-EA

// battery undervoltage: 0, tape adapter: 2.76-D6

//1 without adapter, 2.60-CA

V/subject to no adapter

if(((kaiji_bs==1)&&(sec_bs==1))||(Ca_Xun_BiaoSi==1))

{

sec_bs=0; Ca_Xun_BiaoSi=0;

if((zz1+76)>250)zz1=250;

else zz1=zz1+76;

send _ UART _ one (254);/0 XFE- -charging status

send _ UART _ one (zz 1)// electric quantity value

}

The else// circuit being in a non-charging state

{

if(DianCi_JianCe==1)

{

CongMan_bs=1;CongDian_bs=0;

}

if(((kaiji_bs==1)&&(sec_bs==1))||(Ca_Xun_BiaoSi==1))

{

sec_bs=0; Ca_Xun_BiaoSi=0;

zz1= GetADCCresult (5)// charge detection; display ADC-P1.5

if((zz1+76)>250)zz1=250;

else zz1=zz1+76;

send _ UART _ one (253);/0 XFD- -non-charging status

send _ UART _ one (zz 1)// electric quantity value

}

A button scan program and a value program on a probe (AD capture mode)////////////////////////////////////////////////////////////////////////////////////////////////////////

The values of the keys are 76,77,78,79

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3 (Probe button detection of single chip machine of probe board here)

//if(zz!=0xff)send_UART_one(zz);

if((zz>(KEYA-6))&&(zz<(KEYA+6)))//0xa6

{

Delay20ms();

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3

if((zz>(KEYA-10))&&(zz<(KEYA+10)))

{

// send_UART_one(zz);

while(zz<0xe6)

{

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3

if(zz>=0xe6){zz=0;break;}

Delay20ms();

// send_UART_one(76);

}

send_UART_one(76);

}

else if((zz>(KEYB-10))&&(zz<(KEYB+10)))

{

Delay20ms();

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3

if((zz>(KEYB-10))&&(zz<(KEYB+10)))

{

// send_UART_one(zz);

while(zz<0xe6)

{

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3

if(zz>=0xe6){zz=0;break;}

Delay20ms();

// send_UART_one(77);

}

send_UART_one(77);

}

else if((zz>(KEYC-10))&&(zz<(KEYC+10)))

{

delay_xms(250);

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3

if((zz>(KEYC-10))&&(zz<(KEYC+10)))

{

// send_UART_one(zz);

send_UART_one(78);

while(zz<0xe6)

{

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3

if(zz>=0xe6){zz=0;break;}

delay_xms(1500);

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3

if(zz>=0xe6){zz=0;break;}

send_UART_one(78);

}

else if((zz>(KEYD-10))&&(zz<(KEYD+10)))

{

delay_xms(200);

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3

if((zz>(KEYD-10))&&(zz<(KEYD+10)))

{

// send_UART_one(zz);

send_UART_one(79);

while(zz<0xe6)

{

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3

if(zz>=0xe6){zz=0;break;}

delay_xms(1500);

zz = GetADDCResult (3)// key voltage detection; display ADC-P1.3

if(zz>=0xe6){zz=0;break;}

send_UART_one(79);

}

In summary, the miniaturized B-mode ultrasonic single-chip microcomputer control device provided by the invention is different from the design scheme of the existing manufacturers in the conventional design, the existing part of circuits are removed, a plurality of circuit elements are omitted, the designed new circuit structure is simpler and complete in function, the debugging is convenient (all functions can be completed by only downloading programs) and the upgrading is convenient (the functions can be added by only modifying the programs), the PCB circuit design is simple, the size is small, and the device is suitable for being widely popularized.

The division of the functional modules is only used for illustration, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the functions may be divided into different functional modules to complete all or part of the functions described above.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.

Claims

1. A miniaturized B-ultrasonic single-chip microcomputer control device is connected with an adapter, a battery, a key board and a probe, and is characterized by comprising: the system comprises a charging circuit, a singlechip control circuit, a B-ultrasonic mainboard and a PC system;

the singlechip control circuit samples the working state signal and controls the on and off of the built-in indicator lamp so as to display the current working state; the singlechip control circuit controls the key board to connect the main power source to the B-mode mainboard and the PC system according to a starting switch signal input by the key board; the singlechip control circuit is in handshake communication with the PC system, and outputs the working state signal, the probe signal of the probe and the key signal of the key board to the PC system for display after format conversion;

the singlechip control circuit comprises a singlechip and a communication unit, the singlechip is in handshake communication with the PC system through the communication unit, and the communication unit performs format conversion on the working state signal, the probe signal of the probe and the key signal of the key board and outputs the signals to the PC system for display;

the communication unit comprises an interface, a communication chip, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fourth capacitor and a fifth capacitor;

the REGIN pin of the communication chip is grounded through a fifth capacitor, and the REGIN pin of the communication chip is also connected with the 1 st pin of the interface, the/RST pin and the VBUS pin of the communication chip; a VDD pin of the communication chip is grounded through a fourth capacitor, a D + pin of the communication chip is connected with a3 rd pin of the interface, a D-pin of the communication chip is connected with a2 nd pin of the interface, a TXD pin of the communication chip is connected with a 9 th pin of the single chip microcomputer through a thirteenth resistor, an RXD pin of the communication chip is connected with a 10 th pin of the single chip microcomputer through a fourteenth resistor, and a1 st pin of the interface is connected with a 13 th pin of the single chip microcomputer through a twelfth resistor;

the model of the single chip microcomputer is STC15W401AS, the 1 st pin of the interface transmits a USB _ +5V signal, the 2 nd pin of the interface transmits a USB _ DM _ IN signal, and the 3 rd pin of the interface transmits a USB _ DP _ IN signal.

2. The miniaturized B-mode ultrasonic singlechip control apparatus of claim 1, wherein the charging circuit comprises a charging unit and a state detecting unit:

3. The miniaturized B-mode ultrasonic singlechip control apparatus of claim 2, wherein the state detection unit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first capacitor, a second capacitor, and a third capacitor;

4. The miniaturized B-mode ultrasonic singlechip control apparatus of claim 3, wherein the singlechip control circuit further comprises an indicating unit;

the singlechip outputs a main switch signal according to a start switch signal input by the key board to control the key board to be conducted so as to output a main power supply to the B-mode ultrasonic mainboard and the PC system.

5. The miniaturized B-mode ultrasonic singlechip control device of claim 4, wherein the 1 st pin, the 7 th pin and the 16 th pin of the singlechip are all connected with an indicating unit; the other end of first resistance is connected to the 3 rd foot of singlechip, the other end of eighth resistance is connected to the 4 th foot of singlechip, the 2 nd foot and the 5 th foot of singlechip are all connected the probe, the power supply end is connected to the 6 th foot of singlechip, the communication unit is all connected to the 9 th foot, the 10 th foot and the 13 th foot of singlechip, the keypad is all connected to the 11 th foot and the 15 th foot of singlechip, the other end of fifth resistance is connected to the 12 th foot of singlechip, the battery end is connected to the 14 th foot of singlechip.

6. The miniaturized B-mode ultrasonic singlechip control apparatus of claim 5, wherein the indication unit comprises a ninth resistor, a tenth resistor, an eleventh resistor, a charge indicator lamp, a full indicator lamp and a standby indicator lamp;

7. A miniaturized B-mode ultrasonic single-chip microcomputer control system, which comprises an adapter, a battery and a probe, and is characterized by further comprising a key board and a B-mode ultrasonic single-chip microcomputer control device according to any one of claims 1-6;

8. The miniaturized B-mode ultrasonic singlechip control system of claim 7, wherein the start switch circuit of the keypad comprises a start key, a MOS transistor, a triode, a fifteenth resistor, a sixteenth resistor and a seventeenth resistor;