CN202494510U

CN202494510U - Handheld wireless weighing instrument

Info

Publication number: CN202494510U
Application number: CN2012200129875U
Authority: CN
Inventors: 郑文广; 徐海波
Original assignee: ZHEJIANG LANJIAN WEIGHTING TECHNOLOGY Co Ltd; Zhejiang Province Institute of Metrology
Current assignee: ZHEJIANG LANJIAN WEIGHTING TECHNOLOGY Co Ltd; Zhejiang Province Institute of Metrology
Priority date: 2012-01-12
Filing date: 2012-01-12
Publication date: 2012-10-17
Anticipated expiration: 2022-01-12

Abstract

This utility model discloses a handheld wireless weighing instrument, including a microprocessor module, a regulated power supply module, and a wireless transceiver module connected to the microprocessor module. Weighing data detected by the weighing device is received, processed, and then input into the microprocessor module via the wireless transceiver module. The microprocessor module performs calculations on the weighing data. The handheld wireless weighing instrument also includes an OLED display module that displays the processed data from the microprocessor module. This handheld wireless weighing instrument does not require backlighting and features a clear display, low power consumption, and long operating time.

Description

The portable wireless weighing instrument

Technical field

The utility model relates to a kind of portable wireless weighing instrument, belongs to weighing apparatus.

Background technology

Existing wireless weighing instrument, particularly portable weighing instrument generally is applied in harbour, harbour, because on-the-spot majority do not have power supply, so instrument internal battery all; For power saving, present wireless weighing instrument adopts with LCDs backlight more, and it is generally no problem that use daytime; When but light is relatively dark, must open backlightly, otherwise the user does not see Chu's reading; As passive luminous liquid crystal display only backlight just effective when brighter; But it is more high-power that this need consume, and normally 2～5 of former Overall Power Consumption times, causes instrument to use for a long time.

Summary of the invention

The utility model problem to be solved just provides a kind of portable wireless weighing instrument, does not need backlight illumination, and clear display, electric energy loss are low, to prolong the working time of portable wireless weighing instrument.

For solving the problems of the technologies described above; The utility model adopts following technical scheme: the portable wireless weighing instrument; Comprise micro treatment module, power module of voltage regulation and be connected the radio receiving transmitting module on the said micro treatment module; Claim that the data of weighing that health check-up measures receive processing back input micro treatment module through said radio receiving transmitting module; Said micro treatment module symmetry tuple is according to carrying out computing, and said portable wireless weighing instrument also comprises the OLED display module that the deal with data with micro treatment module shows.

Further, said OLED display module comprises the OLED display and the OLED chip for driving N1 of electrical connection, and the data-interface of said OLED chip for driving N1 links to each other with the I/O interface of single-chip microcomputer.

Further; Said portable wireless weighing instrument also comprises the battery electric quantity detection module that is connected on the micro treatment module; Said battery electric quantity detection module comprises battery voltage detection circuit; Said battery voltage detection circuit is electrically connected with micro treatment module through comparer, and the WV VDD that said power module of voltage regulation provides imports said comparer after dividing potential drop, and said comparer is handled and imported to the logical voltage to input of said battery voltage detection circuit; Said micro treatment module carries out the electric weight judgment processing through the output signal that detects said comparer, said OLED display module display process result.

Further; Said power module of voltage regulation comprises the integrated stabilivolt U of battery E1, switch S 1 and four ends; Said switch S 1 is connected after capacitor C 1 filtering is imported voltage at the Vin end of the integrated stabilivolt U of four ends; By the output of Vout end, the 4th pin of the integrated stabilivolt of said four ends is a control end after the voltage stabilizing, and it links to each other with the control circuit of weighing instrument.

Further; Said portable wireless weighing instrument comprises that also the keyboard load module that is connected on the micro treatment module is used to control the duty of weighing instrument; Said keyboard load module comprises the keyboard drive chip, adopts connected in series between said keyboard drive chip and the said micro treatment module.

Further, said portable wireless weighing instrument also comprises the clock circuit that is connected on the micro treatment module, and said clock circuit comprises clock chip, adopts connected in series between said clock chip and the said micro treatment module.

Further, said portable wireless weighing instrument also comprises the memory module that is connected on the micro treatment module, and said memory module comprises storage chip, adopts connected in series between said storage chip and the said micro treatment module.

Further, said portable wireless weighing instrument also comprises the RS232C interface circuit that is connected on the micro treatment module, and said RS232C interface circuit comprises RS232C Interface and Communication chip, adopts connected in series between said communication chip and the said micro treatment module.

The beneficial effect of the utility model: OLED shows different with traditional LCD display mode; Need not backlight, adopt extremely thin coating of organic material and glass substrate, when electric current passes through; These organic materials will be luminous; And the OLED display screen can do lighter and thinnerly, and visible angle is bigger, and can significantly save electric energy; The utility model is applied to the portable wireless weighing instrument with the OLED display technique; Instrument cost and electric energy have not only been saved; More make the antijamming capability of weighing instrument that further raising has been arranged, avoided liquid crystal display to be prone to produce the defective of disturbing, display effect is clear especially; And weighing instrument can do more frivolous, carry, use convenient.

Description of drawings

Below in conjunction with accompanying drawing the utility model is done further explanation:

Fig. 1 is the circuit block diagram of the utility model;

Fig. 2 is that the OLED display module is connected synoptic diagram with micro treatment module;

Fig. 3 is the circuit diagram of power module of voltage regulation;

Fig. 4 is that the battery electric quantity detection module is connected synoptic diagram with micro treatment module;

Fig. 5 is that keyboard load module, clock circuit, memory module, RS232C interface circuit are connected synoptic diagram with micro treatment module.

Embodiment

With reference to Fig. 1,2; The utility model is the portable wireless weighing instrument; Comprise micro treatment module, power module of voltage regulation and be connected the radio receiving transmitting module on the said micro treatment module; Claim that the data of weighing that health check-up measures receive through said radio receiving transmitting module and handle back input micro treatment module, said micro treatment module symmetry tuple is according to carrying out computing, and said portable wireless weighing instrument also comprises the OLED display module that the deal with data with micro treatment module shows.Micro treatment module refers to single-chip microcomputer in the present embodiment; The OLED display module comprises the OLED display and the OLED chip for driving N1 of electrical connection; Data-interface DB0～DB7 of said OLED chip for driving N1 links to each other with the I/O interface of single-chip microcomputer; CS among the OLED chip for driving N1 is that enable signal, the RES of chip for driving is that reset signal, A0 are that data/commands is selected, RD is that read signal, WR are write signal; Above-mentioned interface has constituted the operating circuit of single-chip microcomputer and OLED display, and the symmetrical tuple certificate of OLED display ability, battery electric quantity, wireless receiving signal intensity, time etc. show.OLED is a kind of active illuminating device, and not only brightness is high, and power saving, can make various color very easily, and display effect is very clear, even remote observation is also no problem, has solved the high brightness of demonstration and the contradiction between the low-power consumption.In addition, the OLED display also possess autoluminescence simultaneously, do not need backlight, low in energy consumption, contrast is high, thin thickness, the visual angle is wide, reaction velocity is fast, the serviceability temperature scope wide, structure and processing procedure are simple, the characteristic that can be used for excellences such as flexibility panel.

With reference to Fig. 3; Power module of voltage regulation comprises the integrated stabilivolt U of battery E1, switch S 1 and four ends; Said switch S 1 is connected after capacitor C 1 filtering is imported voltage at the Vin end of the integrated stabilivolt U of four ends; By the output of Vout end, the 4th pin of the integrated stabilivolt of said four ends is a control end after the voltage stabilizing, and it links to each other with the control circuit of weighing instrument.When this control end is high level, the integrated stabilivolt U of four ends operate as normal, on the contrary when being low level, the positive Vout end of the integrated stabilivolt U of four ends is closed, and no voltage stabilizing is exported; Control circuit output low level when equipment is in holding state; The integrated stabilivolt U of four ends closes the Vout end and stops power supply; So just reduced the kwh loss of battery E1 greatly, improved the service efficiency of power supply, satisfied the harsh requirement of portable set battery; When the need operate as normal, waken up by control circuit, the Vout end restores electricity.Power module of voltage regulation carries out voltage stabilizing to the cell voltage of input, for each module provides stabilized voltage supply.

With reference to Fig. 4; The utility model is a portable set, and power unit mainly provides power supply by battery, does not influence the normal use of equipment for charging in time; The user need understand battery electric quantity what just seem important; Thereby the utility model also designed the battery electric quantity detection module, and what it can be accurately real-time imports single-chip microcomputer with battery voltage signal, and the processing through single-chip microcomputer shows on the OLED display with the form of figure or data; The battery electric quantity detection module comprises battery voltage detection circuit, and said battery voltage detection circuit is electrically connected with micro treatment module through comparer; The WV VDD that power module of voltage regulation provides provides reference voltage value after R1, R2 dividing potential drop, input comparator N3A inverting input the 4th pin, N3B inverting input the 6th pin, N3C inverting input the 8th pin, N3D inverting input the 10th pin; Battery voltage detection circuit is handled in-phase input end the 5th pin of back input comparator N3A to the cell voltage of input; N3B in-phase input end the 7th pin, N3C in-phase input end the 9th pin, N3D in-phase input end the 11st pin pass through and relatively back comparer output high level of reference voltage or low level; The output terminal of comparer N3A, N3B, N3C, N3D links to each other with single-chip microcomputer, and single-chip microcomputer carries out judgment processing through detected input signal to battery electric quantity, and the form with figure is presented on the OLED display then.

With reference to Fig. 5, the keyboard load module is used to control the duty of weighing instrument, and it comprises the keyboard drive chip, adopts connected in series between said keyboard drive chip and the said micro treatment module.The CLK of keyboard drive chip, AB link to each other with the I/O interface of single-chip microcomputer, and 1～8 pin of keyboard drive chip links to each other with keyboard, and two concentric lines wherein link to each other with single-chip microcomputer; When a certain button is pressed; The keyboard drive chip will be handled according to detected push button signalling; The signal that to handle through data line then outputs to single-chip microcomputer; Single-chip microcomputer carries out some relevant control operations according to key assignments, and its operation can be control machine open/close, digital input, storage or deleted data, correlation parameter etc. is set.

In order in the use of equipment, to make things convenient for time for reading information accurately; And, storage can store time and date when weighing data; Inquire about printing etc. after convenient; The utility model has also designed clock circuit, comprises clock chip, adopts connected in series between said clock chip and the said micro treatment module; The I/O of clock chip be data line, CLK be clock cable, RST be reseting signal line, X1 and X2 be chip crystal oscillator signal input part, VC2 be clock chip power supply commonly used just, GND is power-; VC1 also is the clock chip power supply, and this line links to each other with battery E1, during the VC2 normal power supply; Hold to battery E1 through VC1 and to charge; When being the input of VC2 end no-voltage after system power supply is closed, clock chip switches to the battery E1 power supply by the VC1 end, guarantees the clock chip operate as normal.

Be connected with memory module on the micro treatment module; Said memory module comprises storage chip; Adopt connected in seriesly between said storage chip and the said micro treatment module, in order to save the single-chip processor i/o mouth, the WP of storage chip is that write-protect line, SDA are serial data and line, SCL serial time clock line.The data of sending from weighing instrument of weighing receive processing back input single-chip microcomputer through radio receiving transmitting module; Single-chip microcomputer carries out computing through the preset data parameters that reads in the storage chip to the data of weighing that receive, and outputs to the OLED display then and shows.

Single-chip microcomputer utilizes the RS232C interface circuit to carry out data communication with host computer, and the RS232C interface circuit comprises RS232C Interface and Communication chip, adopts connected in series between said communication chip and the said micro treatment module.Communication chip is selected MAX232 for use, and the indirect capacitor C of communication chip C1+ and C1-3, C2+ and indirect capacitor C 4, the 6 pin V-of C2-connect and meet capacitor C 6, T1I and R1O between capacitor C 5 negative terminals, VCC and the V+ is that data line links to each other with single-chip microcomputer.

Consider the needs of hand-held in the foregoing description, battery E1 has adopted chargeable battery, is convenient for carrying.In order to improve reliability, also adopted external special charger, and be designed to the operating voltage range 100V～250V of broad, to satisfy domestic and international multiple client's needs; Except showing battery electric quantity, also have low-voltage auto-off and do not have operation shutdown function automatically in 30 minutes, to protect built-in chargeable battery.

Those skilled in the art can make various changes and distortion to the utility model after knowing the principle of the utility model, only otherwise break away from the spirit of the utility model, all should belong to the defined scope of the utility model accompanying claims.

Claims

1. A hand-held wireless weighing instrument, including a microprocessing module, a regulated power supply module and a wireless transceiver module connected to the microprocessing module, and the weighing data detected by the weighing body is input after being received and processed by the wireless transceiver module A micro-processing module, the micro-processing module calculates and processes weighing data, and the feature is that: the handheld wireless weighing instrument also includes an OLED display module for displaying the processed data of the micro-processing module.

2. The handheld wireless weighing instrument according to claim 1, characterized in that: the OLED display module includes an electrically connected OLED display and an OLED driver chip N1, and the data interface of the OLED driver chip N1 is connected to the I of the single-chip microcomputer. /O interface connected.

3. The handheld wireless weighing instrument according to claim 1, characterized in that: the handheld wireless weighing instrument also includes a battery power detection module connected to the micro-processing module, and the battery power detection module includes a battery A voltage detection circuit, the battery voltage detection circuit is electrically connected to the micro-processing module through a comparator, the operating voltage VDD provided by the stabilized power supply module is input to the comparator after being divided, and the battery voltage detection circuit is connected to the input The voltage is processed and input to the comparator, the micro-processing module detects the output signal of the comparator to perform power judgment processing, and the OLED display module displays the processing result.

4. The hand-held wireless weighing instrument according to claim 1, characterized in that: the voltage stabilized power supply module includes a battery E1, a switch S1 and a four-terminal integrated voltage regulator U, and the switch S1 is connected through a capacitor C1 filters the voltage input to the Vin terminal of the four-terminal integrated voltage regulator U, and outputs it from the Vout terminal after voltage stabilization. The fourth pin of the four-terminal integrated voltage regulator is the control terminal, which is connected to the control circuit of the weighing instrument.

5. The handheld wireless weighing instrument according to claim 1, characterized in that: the handheld wireless weighing instrument also includes a keyboard input module connected to the micro-processing module for controlling the working state of the weighing instrument, The keyboard input module includes a keyboard driver chip, and a serial connection is adopted between the keyboard driver chip and the micro-processing module.

6. The handheld wireless weighing instrument according to claim 1, characterized in that: said handheld wireless weighing instrument also includes a clock circuit connected to the micro-processing module, said clock circuit includes a clock chip, said A serial connection is adopted between the clock chip and the micro-processing module.

7. The handheld wireless weighing instrument according to claim 1, characterized in that: the handheld wireless weighing instrument also includes a storage module connected to the micro-processing module, the storage module includes a memory chip, the A serial connection is adopted between the storage chip and the micro-processing module.

8. The handheld wireless weighing instrument according to claim 1, characterized in that: the handheld wireless weighing instrument also includes an RS232C interface circuit connected to the micro-processing module, and the RS232C interface circuit includes an RS232C interface and A communication chip, and a serial connection is adopted between the communication chip and the micro-processing module.