CN103134534A - Meter head of wireless sensor - Google Patents
Meter head of wireless sensor Download PDFInfo
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- CN103134534A CN103134534A CN201110382062XA CN201110382062A CN103134534A CN 103134534 A CN103134534 A CN 103134534A CN 201110382062X A CN201110382062X A CN 201110382062XA CN 201110382062 A CN201110382062 A CN 201110382062A CN 103134534 A CN103134534 A CN 103134534A
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Abstract
The invention discloses a module of a wireless sensor. The module is named a meter head. The meter head comprises a shell (1), and modularized circuit boards in laminated connection, namely a module mainboard (21) and a liquid crystal display screen mainboard (18), wherein a singlechip (30) and peripheral functional circuits thereof are arranged on the module mainboard (21); the peripheral functional circuits comprise electronic circuits such as a power management circuit (31), a data display circuit (32), a data transmission circuit (33), a data storage circuit (34), a data input circuit (35) and a key scanning circuit (36); a display screen, keys and light emitting diodes are arranged on the shell; and a lithium battery, a buzzer, a universal serial bus (USB) interface and other interfaces are arranged in the shell. A meter head module is in inserted connection with a probe module to form a complete wireless sensor. Circuit software is modularized, and hardware is modularized. By modularized design, the meter head is high in generality, and can be flexibly combined in functional configuration. By adding liquid crystal display and multi-key functions, human-computer interaction is improved, and the meter head is convenient to manufacture and maintain.
Description
[technical field] the invention belongs to wireless senser, more particularly it be of wireless senser product by modularization the split part.
The product category of [background technology] existing wireless senser is various, temperature sensor, pressure transducer, methane transducer, carbon monoxide transducer, carbon dioxide sensor, oxygen sensor, hydrogen gas sensor, formaldehyde sensor etc. are arranged, product sensor is along with the development of technology, and its number is more and more many.Yet present design is to be tending towards modularization for the complicated product of this electronic circuit, and not only electronic circuit is partly realized modularization, and its hardware also is tending towards modular design.Do not realize that its product integral body of modular product is a non-removable single hardware, its inspection and maintenance trouble when in a single day this product various fault occurs, cost is also larger.Yet although the kind of this product is a lot, it is all repetition that its formation has greatly, and this is a waste.Modular design has overcome above-mentioned shortcoming pointedly.
Purpose of the present invention: not only realize modular design on electronic circuit, also realize modular design on hardware, the circuit structure of the parts such as the common sparing of various wireless senser such as single-chip microcomputer, AD collector, logical circuit input, bluetooth communication, battery charging and discharging management, key-press input is concentrated on form a hardware modules that is referred to as " gauge outfit " in a hardware modules.Each probe circuit is separately done a plate as probe module, and like this, hardware modules of the present invention (gauge outfit) and a probe module (it not within the scope of the invention) consist of simple plug and be connected, and have just formed a complete wireless senser.And different probes is corresponding from different probe modules.Like this, on gauge outfit no matter be that hardware and software can be well general, be different probe module corresponding to probe.Gauge outfit can from the corresponding use of many different probe modules.Such design brings benefit to us aspect following two: (1) probe newly developed only need be developed corresponding probe module and get final product, and relates to gauge outfit part nothing; (2) in the possible later gauge outfit redesign gauge outfit that also only needs during upgrading, need to this part not be made an effort at probe module, lowered the product development cost and the workload that update.This modular design has determined that it can flexible configuration, as long as mean that different probes have a gauge outfit program, this is very easy to the maintenance of program and the production of factory, has also facilitated user's maintenance and inspection.
In addition, existing wireless senser is much to need computer to realize the functions such as demonstration of data, and gauge outfit of the present invention oneself is with LCDs, and this makes wireless senser get rid of computer with regard to the design proposal that means us.
[summary of the invention]
1. wireless senser gauge outfit, it comprises housing and electronic circuit, it is characterized in that: modular circuit board is arranged in housing, and it includes module mainboard and LCDs mainboard, and they are layered laminate pluggable being connected and fixed mutually, and in housing, layout is as follows:
A. on module mainboard and LCDs mainboard/between be mounted with liquid crystal display cells wireless module, reset button, the first LCD lamp, the second LCD lamp, hummer, and the connecting interface of electronic devices and components;
B. include in said module motherboard circuit: as single-chip microcomputer and the peripheral functional circuit thereof of circuit core part, include in described peripheral functional circuit: electric power management circuit, data display circuit, data transmission circuit, data storage circuitry, data acquisition circuit, key scanning circuit;
C. include liquid crystal display in the circuit of described liquid crystal display mainboard and drive chip and LCD Interface;
D. described housing is provided with light-emitting diode window of tube, LCDs window, reset button window, probe interface, the threaded joint that is connected use with outside support, USB interface, and button has lithium battery and power-supply system in housing.
2. described power-supply system includes the USB interface to gauge outfit power supply, battery, the battery charging management circuit in electric power management circuit, wireless module power switch circuit, keyswitch dynamo-electric road.
3. include the system power supply feed circuit in power-supply system, the voltage transition that it further includes battery charging management unit acquisition is the HT7333 power supply chip of 3.3 volts of voltages and the shunt capacitance group that is positioned at two termination band tantalum electric capacity of turnover.
4. power-supply system has described battery charging management circuit unit, and it includes the U4 charging management chip, capacitor C 2, C15 and resistance R 1, R2, R3, R5, and D2 light emitting diode, D5 light emitting diode and lithium battery.
5. power-supply system has wireless module power switch key circuit, includes Q1 field effect transistor and Q2 triode.
6. the dynamo-electric road of described keyswitch, it further includes Q3 field effect transistor, Q4 triode and diode D2, D4.
7. described U3 single-chip microcomputer is C8051F340 or C8051F341 or C8051F344 or C8051F345.
8. its single-chip microcomputer pin of described single-chip microcomputer includes: XTAL1, XTAL2 is external crystal oscillator pin, RST, P20 is the burning program pin, RXD0, TXD0 is and wireless module serial communication pin, USB_D+, USB_D-is and host machine wired communication usb signal pin, P00_INT0, P01_INT1, P02_TXD1, P03_RXD1, P20_AIN0, P21_AIN1, P22_AIN2 is and probe plate communication pin that FLASH_CS, SPI_CLK, SPI_SI, SPI_SO are and module information and data storage cell communication pin that BL_POWER is that the wireless transmission power management is controlled pin, LCD_CS, LCD_CLK, LCD_DATA is and image data display module communication pin, and LCD_BL_LED is liquid crystal display backlight control pin, KEY_DET be switching on and shutting down by the bond distance by judgement pin, CHRG_DET, DONE_DET is the battery charging, the judgement pin is completed in battery charging, and BAT_DET is the battery voltage detection pin, KEY1 be wireless switching by the key control pin, KEY2 is the image data display module, backlight switch is by the key control pin, and KEY3 is that the SHIFT function button is controlled pin, KEY4 be storage by the key control pin, POWER_CTL be switching on and shutting down by the key control button, SPK_EN is that hummer is controlled pin.
9. the button on described housing has pilot lamp button backlight, storage button, power switch button, the power switch button of wireless module, function switching key.
Data transmission circuit in described peripheral circuit it be connected with USB wire transmission unit and with wireless transmission unit respectively.
11. described USB wire transmission unit comprises a J6 connector, its pin 1 is that the VUSB power signal line is by diode D3 ground connection, pin 2 is differential signal line USB_D-, and pin 3 is differential signal line USB_D+, they are the usb signal pin with host machine wired communication, pin 4,5,6 ground connection.
12. its wireless data communications circuit of described wireless transmission unit further includes the U2 interface, its pin is respectively with RXD0, TXD0, the BLVDD3.3V of single-chip microcomputer and be connected with earth terminal, and BLVDD3.3V is by capacitor C 10 ground connection.
13. it further includes the U6 chip data storage cell in described peripheral circuit, its model is AT45DB081D.
14. the data acquisition unit in described peripheral circuit has the hardware interface of a standard, it is the connector J3 that a model is HEADER 5X2.
15. the key scanning circuit cell S 1 in described peripheral circuit, S2, S3, S4, five buttons of S5, they are distributed in the housing front, S1 is the power switch button, S2 is wireless module power supply (bluetooth) switch key, S3 is indicator light switch button backlight, S4 is the function switching key, and S5 is the storage button.
Drive chip and LCD Interface 16. include liquid crystal display in the data display circuit unit in described peripheral circuit, effect is to realize data that Single-chip Controlling gathers or the demonstration of system information.
17. liquid crystal display display driver unit is arranged on described liquid crystal display mainboard, and it further includes liquid crystal display and drives chip, its model is HT1621B_SSOP48.
18. it includes light emitting diode D3, the D4 of Q2 triode and two parallel connections backlight control circuit.
19. described connecting interface includes one, module mainboard and LCDs mainboard are the interface that plug is connected mutually, it is to consist of by being contact pin and the jack of arranging shape.
20. described connecting interface is a sensor board interface.
21. being one, described connecting interface is connected and is the USB plug receptacle of gauge outfit working power charging with computing machine.
22. described connecting interface is a battery plug receptacle that is connected with lithium battery.
23. described single-chip microcomputer has a reset circuit that is used for single-chip microcomputer is restarted use, it includes a node that leads to three different directions, and it is the node that leads to single-chip microcomputer pin RST, leads to working power VDD3.3 volt, is communicated with Earth Phase by reset button by resistance R 10.
24. be furnished with the hummer control circuit on gauge outfit LCDs mainboard.
Advantage of the present invention is: modular design makes gauge outfit that good versatility be arranged, but on functional configuration flexible combination farthest to meet customer need.
Newly-increased liquid crystal display, many buttons have improved human-computer interaction function, built-in lithium battery, but local datastore makes the sensor off line use, the characteristics of the instrumentation that more possesses.
Gauge outfit has shortened the R﹠D cycle for new sensor exploitation provides fabulous hardware platform.
Modular design has improved the maintainability of product greatly, improves production management and the after-sales service efficient of factory and has effectively lowered the product fraction defective.
Be elaborated below in conjunction with embodiments of the invention and accompanying drawing.
[description of drawings]:
Figure 1A is the front shell stereographic map of the embodiment of the present invention.
Figure 1B is the back side shell stereographic map of the embodiment of the present invention.
Fig. 1 C is the front shell rotary stereo figure of the embodiment of the present invention.
Fig. 2 is the isometric front view after the LCD display mainboard of the embodiment of the present invention and module mainboard are completed two superimposed.
Fig. 3 is the rear isometric view after the LCD display mainboard of the embodiment of the present invention and module mainboard are completed two superimposed.
Fig. 4 is that the square frame of the circuit diagram of the embodiment of the present invention is always schemed.
Fig. 5 is the pin arrangement figure of the single-chip microcomputer of the embodiment of the present invention.
Fig. 6 is the lithium battery charging management circuit in the electric power management circuit unit of belonging to of the embodiment of the present invention.
Fig. 7 is the dynamo-electric road of the keyswitch of the embodiment of the present invention.
Fig. 8 is the system power supply feed circuit of the embodiment of the present invention.
Fig. 9 is the power switch circuit of the wireless module of the embodiment of the present invention.
Figure 10 is the reset key circuit of the embodiment of the present invention.
Figure 11 A is the liquid crystal display drive chip of the embodiment of the present invention.
Figure 11 B is the interface of the LCDs of the embodiment of the present invention.
Figure 12 is the data acquisition function unit of the embodiment of the present invention.
Figure 13 is the backlight control circuit of the embodiment of the present invention.
Figure 14 is the data storage function unit of the embodiment of the present invention.
Figure 15 is the data-transformation facility unit of the embodiment of the present invention.
Figure 16 is the wireless data communications circuit of the embodiment of the present invention.
Figure 17 is the key scan functional unit of the embodiment of the present invention
Figure 18 is the hummer control circuit of the embodiment of the present invention
Figure 19 A is the circuit diagram of the connecting contact pin of the embodiment of the present invention
Figure 19 B is the circuit diagram of the connection jack of the embodiment of the present invention
Figure 20 is the burned interface of the program of the embodiment of the present invention.
[embodiment]
The present invention is a kind of gauge outfit of wireless senser, and it is modular product, just becomes a complete wireless senser after it and probe module (do not show in figure, do not belong to scope of the present invention) connect.
Label declaration:
The window 3 first LCD lamp windows of 1 housing 2 LCDs
4 second LCD lamp window 5 indicator light switch button 6 storage buttons backlight,
7 power switch button 8 wireless module power supply (bluetooth) switch key 9 function switching keys
10 decoration hole 11 second LCD lamp 12 probe plug receptacles
13 reset button window 14 threaded joint 15 probe plug receptacles
19 liquid crystal display cells 20 first LCD lamp 21 module mainboards
22 connect connector 23 wireless module 24USB sockets
25 sensor board plug receptacle 26 battery plug receptacle 27 hummers
28 grafting solid post 28 ' grafting open column 29 reset button
30 single-chip microcomputer 31 electric power management circuit 32 data display circuit
33 data transmission circuit 34 data storage circuitry 35 data acquisition circuits
36 key scanning circuit 37 charging management chip 38 triodes
39 field effect transistor 40 power supply chip 41 field effect transistor
42 triode 43 node 44 LCDs LCD drive chip
The hardware interface 47Q2 triode of interface 46 standards of 45 LCDs
48 storage chip 49 data transmission connector 50 data transmission communication U2 interfaces
51 burned mouthful of triode 52 hummer 53 programs
Its formation of Figure 1A comprises a gauge outfit housing 1,
Be provided with the window 2 of a LCDs in gauge outfit shell 1 front upper, the first LCD lamp window 3 of display working condition and the second LCD lamp window 4 of demonstration charged state.
Also be provided with five function keys on the front of housing 1, they are: the power switch button 8 of pilot lamp button 5 backlight, storage button 6, power switch button 7, wireless module (bluetooth), function switching key 9.Louvre 10 is arranged on housing.
Figure 1B is furnished with a reset button window 13 at the back side of housing 1, be furnished with one and be used for and the threaded joint 14 of being connected the connection of support (not shown) on the side face of the left side of housing 1.Have on its bottom side side face sensor probe plug receptacle 15 and probe plug receptacle 15 '.
Fig. 1 C has a USB insert window 16 on the side face of the top side of housing 1.Can be connected with computer when needed by this this gauge outfit of socket.The important function of another one is charged for this gauge outfit exactly.
Fig. 2 is the isometric front view after the LCD display mainboard of gauge outfit of the present invention and module mainboard are completed two superimposed.LCD LCDs 19 is arranged on display screen mainboard 18, two light emitting diode LED are arranged, the first LCD lamp 20, the second LCD lamp 11.The indication of the first LCD lamp 20 display working conditions, during by key, this lamp electrified light emitting continues to flash the expression gauge outfit and is in normal operating conditions, and when closing tester in power-down state, lamp stops flashing.The indication of the second LCD lamp 20 ' demonstration charged state, it is lower in working order that it can glow and continue to flash to remind and needs to charge when the lithium battery quantity not sufficient, can change green into and continue to flash after connecting charger, stop flashing when sufficient to electric weight, show green glow.
Fig. 3 is the rear isometric view after the LCD display mainboard of gauge outfit of the present invention and module mainboard are completed two superimposed.
Restart system when being fixed with wireless module 23 and reset button 29 for the deadlock of gauge outfit under normal condition on module mainboard 21.
Be furnished with four plug receptacles between display screen mainboard 18 and 21 liang of plates of module mainboard: they are: 1. interconnective connection socket 22 between display screen mainboard 18 and module mainboard 21, and 2. the USB socket 24, and 3. the sensor board plug receptacle 25, and 4. the battery plug receptacle 26.
Also has a hummer 27 between display screen mainboard 18 and 21 liang of plates of module mainboard.
The formation of connection socket 22 is such: be furnished with respectively on the plate face of LCD display mainboard 18 and module mainboard 21 two sockets on the plate face separately of standing on connect solid post 28 and grafting open column 28 ', its consists of the socket connection interface 22 between the mainboard of two of up and down.
Sensor board plug receptacle 25, it is used for being connected between gauge outfit and probe module (not shown).
Fig. 4 is that the square frame of the circuit diagram of gauge outfit of the present invention is always schemed.
The electronic circuit of the gauge outfit of the embodiment of the present invention 1 is such, and it has electric power management circuit 31, data display circuit 32, data transmission circuit 33, data storage circuitry 34, data acquisition circuit 35 and key scanning circuit 36 these circuit units at its periphery centered by single-chip microcomputer 30.
Wherein, the task of electric power management circuit unit 31 comprises the dynamo-electric road of feed circuit, keyswitch of charge management circuit, the system of lithium battery 17, the low-power consumption management circuit of wireless module.
Fig. 5 is the arrangenent diagram of single-chip microcomputer 30 pins in circuit diagram of the present invention.
Single-chip microcomputer 30 is core controllers of gauge outfit, be used for realizing data collection, computing, storage, transmit and realize some state controls etc.What the present embodiment scheme was used is the C8051F340 single-chip microcomputer, the internal USB interface, and dominant frequency can reach 48MHZ.
The single-chip microcomputer pinout is as follows:
RXD0:UART receives signal wire, is connected to wireless module
TXD0:UART transmitted signal line is connected to wireless module
P03_RXD1: the reception signal wire acquisition interface of common IO mouth or UART1
P02_TXD1: the transmitted signal line acquisition interface of common IO mouth or UART1
P01_INT1: the IO mouth acquisition interface of common IO mouth or support external interrupt
P00_INT0: the IO mouth acquisition interface of common IO mouth or support external interrupt
USB_D+, USB_D-:USB interface signal line
RST: monolithic processor resetting signal wire
P20: single-chip microcomputer jtag interface signal wire
BAT_DET: battery voltage detection signal wire
CHRG_DET: battery charging state signal lines
DONE_DET: signal lines is completed in the battery charging
KEY1-KEY4: key-press input signal wire
SPK_EN: hummer control signal wire
POWER_CTL: shutdown control signal wire
KEY_DET: key state detection signal line
LCD_CS, LCD_CLK, _ LCD_DATA: LCD controller signal wire
LCD_BL_LED: liquid crystal display display control signal line backlight
P20_AIN0, P21_AIN1, P22_AIN2: common IO mouth or analog input interface
LED1: relay indicating light control signal wire
BL_POWER: wireless module power supplying control signal line
SPI_SI, SPI_SO, SPI_CLK, FALSH_CS:FLASH read-write control signal line
XTAL1:XTAL2: single-chip microcomputer crystal oscillator input pin.
Fig. 6 is the lithium battery charging management circuit in Power Management Unit 31 of the present invention.
This circuit has adopted the CN3062 charging management chip 37 of a slice lithium battery 17, and CN3062 can charge to lithium battery 17 by the USB power supply, can indicate the charged state of battery 17.Resistance R 1 is connected to the positive pole of light emitting diode D2 (the first LCD lamp 20), light emitting diode D5 (the second LCD lamp 11).D2 the first LCD lamp 20 negative poles connect CN3062 charging management chip 37 the 7th pin, D5 the second LCD lamp 11 connects the 6th pin, when battery 17 is charging, CN3062 charging management chip 37 the 7th pin is low level, and the 8th pin is high level, and D2 the first LCD lamp 20 is lighted burn red; When battery is full of electricity, 7 pin high level, 8 pin low levels, D5 the second LCD lamp 11 is lighted glow green.The 7th pin of CN3062 charging management chip 37 and the 8th pin simultaneously also with single-chip microcomputer 30 on the 15th pin P4.7 be connected with the 18th pin p4.4.Make single-chip microcomputer 30 can detect in real time the charged state of lithium battery 17 and can show on LCDs 19.The effect of diode D1 is directly to power to subsequent conditioning circuit when not needing inner lithium battery 17, and D1 does not weld when using lithium battery 17.
Fig. 7 is the dynamo-electric road of the keyswitch of gauge outfit of the present invention,
Its formation includes Q4 triode 38, Q3 field effect transistor 39, and diode D2, D4.The effect on the dynamo-electric road of keyswitch is by button 7 control system starts, can also control shutdown by single-chip microcomputer 30.In upper figure, KEY_POWER is connected to the PCB button 7 on the gauge outfit liquid crystal board, when conducting resinl makes 7 short circuit of PCB button, can make 39 conductings of Q3 field effect transistor, this moment, electric current led to POWER_OUT to system power supply from the source S utmost point, the drain D utmost point that the BAT_V of lithium battery 17 flows to field effect transistor 39.After 39 conductings of Q3 field effect transistor, system powers on, to control immediately POWER_CTL after single-chip microcomputer 30 starts be high level and remain unchanged, triode Q4 conducting this moment, namely S source electrode and the potential difference (PD) between the G grid of metal-oxide-semiconductor field effect transistor 39 make 39 conductings of Q3 field effect transistor to the voltage difference that produces at R20 two ends.Even if button 7 discharged Q3 field effect transistor 39 and still can keep conducting state this moment, Q3 field effect transistor 39 open states are " locked " and are controlled by single-chip microcomputer 30, the control procedure of Here it is system boot.
After system's normal operation, because KEY_POWER and button 7 are direct-connected, KEY_POWER just is grounded when the power button 7 on housing 1 is pressed, the generation direction is the electric current to the KEY_POWER direction from POWER_OUT, this electric current flow through resistance R 21 and diode D4, make the current potential step-down of KEY_DET, when the long also step-down of POWER_CTL level of can controlling of button 7 on time, Q4 triode 38 is cut off, the S utmost point of field effect transistor 39 and the voltage difference between the G utmost point disappear, and the electric current between source S and drain D is cut off.After the current potential of KEY_DET can be dragged down, single-chip microcomputer 30 detected this variation, makes system closedown.
Fig. 8 is the system power supply feed circuit, and it includes HT7333 power supply chip 40 and is arranged in the shunt capacitance group at its input and output two ends, and capacitor C 1, C4, C17 are tantalum electric capacity.System's primary power is the 3.3v direct current, for most of circuit provides power supply.HT7333 power supply chip 40 is a slice low voltage difference DC-DC power supply chips, and this chip can guarantee the stable output of 3.3v under very low pressure reduction, be fit in the battery-powered handheld device of single-lithium-battery very much.POWER_OUT is that the power supply that controlled by field effect transistor 39 is exported, and exports to U5 unit 40 after start, and output VDD3.3V powers to subsequent conditioning circuit after unit U5 power supply chip 40 is adjusted.
Fig. 9 is the power switch circuit of wireless module, and it includes Q1 field effect transistor 41 and Q2 triode 42.Need larger electric current during wireless module work, in order to reduce as much as possible the power consumption of system, the power supply of system closing wireless module when not using Bluetooth function is just open when needing to use.The system boot acquiescence is closed the wireless module power supply, and this moment, single-chip microcomputer 30 control BL_POWER were low level, the 42 not conductings of Q2 triode, and the 41 just not conductings of Q1 field effect transistor, wireless module is not worked.Bluetooth switch button 8 on liquid crystal board is long to be controlled BL_POWER on time and becomes high level when single-chip microcomputer 30 detects, and field effect transistor 41 is with regard to conducting, wireless module work.
Figure 10 is the reset key circuit, and it includes a node 43 that leads to three different directions, and it is the node 43 that leads to single-chip microcomputer 30 pin RST, leads to working power VDD3.3 volt, is communicated with Earth Phase by reset button 29 by resistance R 10.Unexpected deadlock state occurs for fear of gauge outfit and cause the user can not normal shutdown, designed special reset button 29 in gauge outfit.This reset key is connected to the reset pin RST of monolithic, RST is forced to low level when button 29 is pressed, monolithic processor resetting causes signal wire (POWER_CTL) the state release (becoming low level) of single-chip computer control system shutdown to make system closedown this moment.Therefore in fact this button 29 has played the effect of shutdown.
Liquid crystal display in Figure 11 A data display function unit drives chip 44, and the effect of this unit is that single-chip microcomputer 30 is controlled data or the system information that LCD driver shows collection.
It is that a LCDs LCD drives chip 44.Pin LCD_CS, the LCD_CLK of single-chip microcomputer 30, LCD_DATA for this chip carry data-signal by from SEG0,1,2,3,4,,,,, show to these aobvious sections of looking of SEG31.The model that this liquid crystal display drives chip 44 is HT1621B-SSOP48.The annexation of single-chip microcomputer 30 and liquid crystal driver is as follows: this chip is by LCD_CS, LCD_CLK, three signal wires of LCD_DATA and single-chip microcomputer 30 communications, but the liquid crystal display of 128 pen sections of single-chip microcomputer control display, liquid crystal display drives the row signal line COM0-COM3 of chip and the pin of row control signal wire SEG0-SEG27 connecting fluid crystal display interface 45 correspondences.Resistance R 3 is used for determining brightness into liquid crystal display 19.
Figure 11 B is the interface 45 of liquid crystal display 19.
Figure 12 is the data acquisition function unit, it be used for acquisition process through the conditioning Sensor Analog Relay System or Digital Logic control signal.System provides the hardware interface 46 of a standard for sensor, it is a connector that model is HEADER5X2.Acting on the sensor board of this hardware definition can be accepted by gauge outfit and control.Respectively there are five lead-in wires the both sides of this hardware interface 46, and it has 10 lead-in wires, and lead-in wire is defined as follows:
The VDD33V:3.3V power supply
POWER_OUT: the voltage that controlled battery output or USB directly power,
P00_INT0: the IO mouth of common IO mouth or support external interrupt,
P01_INT1: the IO mouth of common IO mouth or support external interrupt,
P20_AIN0: common IO mouth or analog input mouth,
P21_AIN1: common IO mouth or analog input mouth,
P22_AIN2: common IO mouth or analog input mouth,
P02_TXD1: common IO mouth or UART transmitted signal line,
P03_RXD1: common IO mouth or UART receive signal wire.
Figure 13 be backlight control circuit it include light emitting diode D3, the D4 of Q2 triode 47 and two parallel connections.In gauge outfit, liquid crystal display used is that our company's die sinking is tailor-made, does not comprise backlight, has therefore added specially independent backlight control on LCD panel, and circuit is as follows:
LCD_BL_LED is connected to single-chip microcomputer 30, when LCD_BL_LED is high level, and 47 conductings of Q2 triode, light emitting diode D3, D4 lights, D3 on structure, D4 works as D3 in the side of liquid crystal display, can illuminate liquid crystal display bottom when D4 lights and make backlight effect.Otherwise, when LCD_BL_LED is low level, the 47 not conductings of Q2 triode, D3, D4 does not work, and this moment, liquid crystal display 19 was without backlight.
Figure 14 data storage function unit
Data storage cell is in order to storage list head system configuration information and experimental data.Storage chip 48 use be AT45DB081D, this is the FLASH of a slice capacity 2Mbit universal serial bus, the annexation of single-chip microcomputer 30 and this chip is as follows:
SPI_SI is the SPI input signal cable,
SPI_CLK is the SPI clock cable,
SPI_SO is the SPI output signal line,
FLASH_CS is SPI chip selection signal line.
Figure 15 is the data-transformation facility unit, and it has a J6 connector 49.
Data transmission is divided into cable data transmission and Wireless Data Transmission.To be single-chip microcomputer 30 carry out data interaction by USB interface 24 and computer or other USB main equipments for cable data transmission, and Wireless Data Transmission is to utilize bluetooth connection protocol and main equipment data communication.
The interface of wired connection is as follows:
Therefore the C8051F340 single-chip microcomputer 30 internal USB device controllers that native system adopts can interconnect with the USB main equipment, and USB hardware interface 24 (seeing USB_D-, USB_D+ in Figure 15) externally only is provided.
VUSB is the USB power signal line,
USB_D-is the USB differential signal line,
USB_D+ is the USB differential signal line,
GND is ground wire.
In figure, D3 is TVS protection diode, thereby preserves from order to be suppressed at the spike protection system circuit that brings when USB interface 24 plugs.
Figure 16 is the wireless data communications circuit.
The wireless data communication utilization be a slice wireless module 23, this module is supported bluetooth 2.0 agreements, externally by U2 interface 50 and single-chip microcomputer 30 interconnection.Single-chip microcomputer 30 sends to bluetooth master by this interface 50 with data.Its pin 3 is 3.3 volts of direct current line balls of bluetooth, and it is by a decoupling capacitance C10 ground connection, and the effect of C10 is to suppress and the contingent coupling each other of other electric elements.
Annexation is as follows:
RXD0 is that UART receives signal wire,
TXD0 is UART transmitted signal line,
BLVDD33V is controlled 3.3V power supply,
GND is the ground signalling line.
Figure 17 key scan functional unit.
Pcb printed wire button after single-chip microcomputer 30 powers on meeting real time scan gauge outfit liquid crystal display has S1, S2, S3, S4, five buttons of S5 here, and the control circuit of button is as follows:
S1-S5 is PCB printed wire button, and they are distributed in housing 1 front, S1: power switch button 7, it except provide common key-press " press " and " upspringing " function, the power up function that powers on also is provided, during system closing, touch this key system and become and can start shooting; S2: wireless module 20 power supplys (bluetooth) switch key 8; S3: indicator light switch button 5 backlight; S4: function switching key 9; S5: storage button 6.S1-S4 is the general function button.High-low level signal KEY1-KEY4 is connected to the IO mouth of single-chip microcomputer 30, scan the state of these IO mouths during single-chip microcomputer 30 operation, when pressing without button, state is low level, and when having button to press, corresponding IO mouth state is high level, and single-chip microcomputer 30 carries out corresponding operating according to these key-press status.
Figure 18 hummer control circuit, it includes triode 51, and hummer 52.
SPK_EN is connected to the IO mouth of single-chip microcomputer 30, when SPK_EN is high level, and 51 conductings of Q1 triode, hummer is rung, triode 51 not conductings when SPK_EN is low level, hummer does not ring.When applying the signal of certain frequency and dutycycle to SPK_EN, hummer 52 just sends different sound, has carried out corresponding operation with the prompting user.
Figure 19 A is the circuit diagram of connecting contact pin 28.Between screen mainboard 18 and module mainboard 21, interconnective connection plug-in unit 22 is arranged, it is made of contact pin and the jack of docking up and down.Connecting contact pin 28 is fixed on module mainboard 21, and it is divided into left and right two rows, and a row is J1 contact pin 28a, and another row is J2 contact pin 28b.Connecting contact pin 28a has 8 pins, and connecting contact pin 28b has ten pins.These pins all connect to correspondence with corresponding pin on single-chip microcomputer is connected.
Figure 19 B be connect jack 28 ' circuit diagram, connect jack 28 ' be the jack web member that is disposed on LCD liquid crystal display mainboard 18.It is divided into left and right two rows, and a row connects jack 28 ' a for J4, and another row connects jack 28 ' b for J3.Connecting jack 28 ' a has 8 pins, and connect jack 28 ' b, ten pins is arranged.These pins all connect to correspondence with corresponding pin on single-chip microcomputer is connected.
Connecting contact pin 28 be connected jack 28 ' its pin and be defined as follows:
VDD33V is the 3.3V power supply,
GND is ground signalling,
LCD_CS, LCD_CLK, LCD_DATA are the signal wires of controlling liquid-crystal controller,
LCD_BL_LED is LCD backlight display control signal line,
KEY_POWER is the starting key signal wire,
GND: signal ground,
The GND signal ground,
BATT_LED+ is that lithium cell charging clearing lamp signal wire is anodal,
BATT_CHRG be lithium cell charging indicator signal line just at charging signals line negative pole,
BATT_DONE is lithium cell charging indicator signal line charging completion signal line negative pole,
LED1 is the relay indicating light signal wire,
SPK_EN is the hummer control signal wire,
KEY1-KEY4 is common PCB push button signalling line.
Be furnished with contact pin in a row 28 on module mainboard 21, they are divided into J1, J2 two rows;
Have on J1 8 pin: VDD3.3V, GND, LCD_CS, LCD_CLK, LCD_DATA,
LCD_BL_LED，KEY_POWER、GND。
Have on J2 10 pin: GND, BATT_LED+, BATT_CHRG, BATT_DONE, LED1,
SPK_EN、KEY1、KEY2、KEY3、KEY4。
And be furnished with on liquid crystal display mainboard 18 jack in a row 28 ', they are divided into J3, J4 two rows, have on J3 10 hole: GND, BATT_LED+, BATT_CHRG, BATT_DONE, LED1,
SPK_EN、KEY1、KEY2、KEY3、KEY4。
Have on J4 8 hole: VDD3.3V, GND, LCD_CS, LCD_CLK, LCD_DATA,
LCD_BL_LED，KEY_POWER、GND。
Figure 20 is the burned interface 53 of program, and it is disposed on module mainboard 21.It has 8 pins, and VDD3.3V is 3.3 volts of direct-current working volts, and GND is exactly ground connection, pin RST ,/RST ,/P20, P20 are connected the signal wire that counterpart connects with single-chip microcomputer.
Claims (25)
1. wireless senser gauge outfit, it comprises housing and electronic circuit, it is characterized in that: housing has modular circuit board in (1), it includes module mainboard (21) and LCDs mainboard (18), they are layered laminate pluggable being connected and fixed mutually, and in housing, layout is as follows:
A. on module mainboard (21) and LCDs mainboard (18)/between be mounted with liquid crystal display cells (19) wireless module plate (23), reset button (29), the first LCD lamp (20), the second LCD lamp (11), hummer (27), and the connecting interface of electronic devices and components;
B. include in said gauge outfit module mainboard (21) circuit: as single-chip microcomputer (30) and the peripheral functional circuit thereof of circuit core part, include in described peripheral functional circuit: electric power management circuit (31), data display circuit (32), data transmission circuit (33), data storage circuitry (34), data acquisition circuit (35), key scanning circuit (36);
C. include liquid crystal display in the circuit of described liquid crystal display mainboard (18) and drive chip (44) and LCD Interface (45);
D. described housing (1) is provided with light-emitting diode window of tube, LCDs window (2), reset button window (13), probe interface (12) (15), USB interface (24), button has lithium battery (17) and power-supply system in it.
2. wireless senser gauge outfit as claimed in claim 1, it is characterized in that: described power-supply system comprises the USB interface (24) of promising gauge outfit power supply, lithium battery (17), battery charging management circuit in electric power management circuit (31), wireless module power switch circuit, keyswitch dynamo-electric road.
3. wireless senser gauge outfit as claimed in claim 1, it is characterized in that: include the system power supply feed circuit in power-supply system, it further includes from the voltage transition of battery charging management unit acquisition is the HT7333 power supply chip (40) of 3.3 volts of voltages and the shunt capacitance group that is positioned at two termination band tantalum electric capacity of turnover.
4. wireless senser gauge outfit as claimed in claim 2 or claim 3, it is characterized in that: described battery charging management circuit unit, it includes U4 charging management chip (37), capacitor C 2, C15 and resistance R 1, R2, R3, R5, and D2 light emitting diode (20), D5 light emitting diode (11) and lithium battery (17).
5. wireless senser gauge outfit as claimed in claim 2 or claim 3, it is characterized in that: at described wireless module power switch circuit, it further includes Q1 field effect transistor (41) and Q2 triode (42).
6. wireless senser gauge outfit as claimed in claim 2 or claim 3 is characterized in that: described keyswitch dynamo-electric road, it further includes Q3 field effect transistor (39), Q4 triode (38) and diode D2, D4.
7. wireless senser gauge outfit as claimed in claim 1, it is characterized in that: described U3 single-chip microcomputer (30) is C8051F340 or C8051F341 or C8051F344 or C8051F345.
8. wireless senser gauge outfit as claimed in claim 1, it is characterized in that: its single-chip microcomputer pin of described single-chip microcomputer (30) includes: XTAL1, XTAL2 is external crystal oscillator pin, RST, P20 is the burning program pin, RXD0, TXD0 is and wireless module serial communication pin, USB_D+, USB_D-is and host machine wired communication usb signal pin, P00_INT0, P01_INT1, P02_TXD1, P03_RXD1, P20_AIN0, P21_AIN1, P22_AIN2 is and probe plate communication pin that FLASH_CS, SPI_CLK, SPI_SI, SPI_SO are and module information and data storage cell communication pin that BL_POWER is that the wireless transmission power management is controlled pin, LCD_CS, LCD_CLK, LCD_DATA is and image data display module communication pin, and LCD_BL_LED is liquid crystal display backlight control pin, KEY_DET be switching on and shutting down by the bond distance by judgement pin, CHRG_DET, DONE_DET is the battery charging, the judgement pin is completed in battery charging, and BAT_DET is the battery voltage detection pin, KEY1 be wireless switching by the key control pin, KEY2 is the image data display module, backlight switch is by the key control pin, and KEY3 is that the SHIFT function button is controlled pin, KEY4 be storage by the key control pin, POWER_CTL be switching on and shutting down by the key control button, SPK_EN is that hummer is controlled pin.
9. wireless senser gauge outfit as claimed in claim 1, is characterized in that: include pilot lamp button backlight (5), storage button (6), power switch button (7), the power switch button (8) of wireless module, function switching key (9) in the button on described housing (1).
10. wireless senser gauge outfit as claimed in claim 1, it is characterized in that: it is connected the data transmission circuit in described peripheral circuit (33) with USB wire transmission unit and with wireless transmission unit respectively.
11. wireless senser gauge outfit as claimed in claim 10, it is characterized in that: described USB wire transmission unit comprises a J6 connector (49), its pin 1 is that the VUSB power signal line is by diode D3 ground connection, pin 2 is USB_D-data lines, pin 3 is USB_D+ data lines, they are the usb signal pin with host machine wired communication, pin 4,5,6 ground connection.
12. wireless senser gauge outfit as claimed in claim 10, it is characterized in that: its wireless data communications circuit of described wireless transmission unit further includes U2 interface (50), its pin is respectively with RXD0, TXD0, the BLVDD3.3V of single-chip microcomputer (30) and be connected with earth terminal, and BLVDD3.3V is by capacitor C 10 ground connection.
13. wireless senser gauge outfit as claimed in claim 1 is characterized in that: it further includes U6 chip (48) data storage cell in described peripheral circuit (34), and its model is AT45DB081D.
14. wireless senser gauge outfit as claimed in claim 1 is characterized in that: the data acquisition unit in described peripheral circuit has the hardware interface (46) of a standard, and it is the connector J3 that a model is HEADER 5X2.
15. wireless senser gauge outfit as claimed in claim 1, it is characterized in that: in the key scanning circuit unit in described peripheral circuit, S1, S2, S3, S4, five buttons of S5 are arranged, they are distributed in housing 1 front, S1 is power switch button (7), S2 is wireless module power supply (bluetooth) switch key (8), S3 is indicator light switch button backlight (5), and S4 is function switching key (9), and S5 is storage button (6).
16. wireless senser gauge outfit as claimed in claim 1 is characterized in that: include liquid crystal display in the data display circuit unit in described peripheral circuit and drive chip (44) and LCD Interface (45).
17. wireless senser gauge outfit as claimed in claim 1 is characterized in that: liquid crystal display display driver unit is arranged on described liquid crystal display mainboard (18), and it further includes liquid crystal display and drives chip (44), and its model is HT1621B_S5OP48.
18. wireless senser gauge outfit as claimed in claim 15 is characterized in that: it includes light emitting diode D3, the D4 of Q2 triode (47) and two parallel connections backlight control circuit.
19. wireless senser gauge outfit as claimed in claim 1, it is characterized in that: described connecting interface includes one with module mainboard (21) and the interconnective interface of LCDs mainboard (18) (22), and it is to consist of by being contact pin (28) and the jack (28 ') of arranging shape.
20. wireless senser gauge outfit as claimed in claim 1 is characterized in that: described connecting interface is a sensor board interface (25).
21. wireless senser gauge outfit as claimed in claim 1 is characterized in that: described connecting interface is one and is connected and is the USB plug receptacle (24) of working power charging with computing machine.
22. wireless senser gauge outfit as claimed in claim 1 is characterized in that: described connecting interface is a battery plug receptacle (26) that is connected with lithium battery (17).
23. wireless senser gauge outfit as claimed in claim 1, it is characterized in that: described single-chip microcomputer (30) has a reset circuit that is used for single-chip microcomputer (30) is restarted use, it includes a node (43) that leads to three different directions, and it is the node that leads to single-chip microcomputer (30) pin RST, leads to working power VDD3.3 volt, is communicated with Earth Phase by reset button (29) by resistance R 10.
24. wireless senser gauge outfit as claimed in claim 1 is characterized in that: be furnished with hummer (27) control circuit on gauge outfit LCDs mainboard (18).
25. wireless senser gauge outfit as claimed in claim 1 is characterized in that: the threaded joint (14) that is connected use with outside support is arranged on the side face of gauge outfit housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110382062XA CN103134534A (en) | 2011-11-24 | 2011-11-24 | Meter head of wireless sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110382062XA CN103134534A (en) | 2011-11-24 | 2011-11-24 | Meter head of wireless sensor |
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| CN103134534A true CN103134534A (en) | 2013-06-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103401012A (en) * | 2013-08-13 | 2013-11-20 | 深圳市优尔备科技有限公司 | Laminated mobile power supply |
| CN106643876A (en) * | 2016-11-17 | 2017-05-10 | 安康学院 | Wireless sensor and wireless sensor system |
| CN107421587A (en) * | 2017-08-22 | 2017-12-01 | 山东东润仪表科技股份有限公司 | A kind of combined sensor |
| CN108075547A (en) * | 2017-12-30 | 2018-05-25 | 广州逊镭电子科技有限公司 | A kind of barcode scanning circuit |
| CN109708795A (en) * | 2019-01-10 | 2019-05-03 | 宁波天远五金有限公司 | A kind of omnipotent dynamometer |
| CN110164112A (en) * | 2019-05-06 | 2019-08-23 | 山东远大朗威教育科技股份有限公司 | Data terminal, sensor device and Digitized experimental system |
| US10743088B2 (en) | 2017-02-16 | 2020-08-11 | Watlow Electric Manufacturing Company | Compact modular wireless sensor |
| WO2023273044A1 (en) * | 2021-06-30 | 2023-01-05 | 上海商汤智能科技有限公司 | Facial recognition module, facial recognition device, and facial recognition system |
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| WO2023273044A1 (en) * | 2021-06-30 | 2023-01-05 | 上海商汤智能科技有限公司 | Facial recognition module, facial recognition device, and facial recognition system |
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Application publication date: 20130605 |