CN201016785Y - Digital scale - Google Patents
Digital scale Download PDFInfo
- Publication number
- CN201016785Y CN201016785Y CNU2006201418843U CN200620141884U CN201016785Y CN 201016785 Y CN201016785 Y CN 201016785Y CN U2006201418843 U CNU2006201418843 U CN U2006201418843U CN 200620141884 U CN200620141884 U CN 200620141884U CN 201016785 Y CN201016785 Y CN 201016785Y
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Abstract
The utility model discloses a digital scale comprising a weight pan, a sensor and a display; the weight pan is equipped on the sensor; the sensor comprises a signal input detecting unit, a data processing unit which is separately connected with the signal input detecting unit and the display; the signal input detecting unit comprises a detecting controller equipped with a multiple-pin interface, a converter, a signal conditioning circuit and a multi-core terminal; the data processing unit comprises a data processing control, an analog photoelectric coupler connected with the data processing control, a memorizer, an I<2> C bus, a USB interface and a power module providing sensor power. The detecting control completes the tasks of hot swap of the sensor, identity identification of the sensor, self-detection of the sensor and data communication and order exchange with the data processing control. The detecting control controls the on-line detection and on-line adjustment of the sensor.
Description
Technical field
The utility model relates to a kind of digital calculation balance of weighing.
Background technology
The existing higher balance of precision normally is inconvenient to carry, and conveniently pushes away the balance of band, and precision is not high again.
Summary of the invention
The purpose of this utility model provides a kind of precision height, is convenient for carrying digital calculation balance with weighing again.
The technical measures that the utility model is taked are: it comprises weighing plate, sensor and display, and weighing plate places on the sensor, and sensor comprises the signal input detection unit, respectively the data processing unit that is connected with display screen with the signal input detection unit; Comprise in the signal input detection unit: have the detection controller of multiway interface, converter, the signal conditioning circuit that is connected with converter output end, respectively with signal conditioning circuit with detect the multicore terminal that controller is connected; Comprise in the data processing unit: data processing controller, the analog photoelectricity coupling mechanism, storer, the I that are connected with data processing controller respectively
2C bus and USB interface place the power module on the data processing unit.
As above-mentioned structure of the present utility model, after the sensor starting, converter will be that voltage signal is input in the signal conditioning circuit by the weighing conversion of signals; Signal conditioning circuit with its magnitude of voltage be converted to treatable magnitude of voltage and be converted to unified voltage signal according to the standard value of defined, i.e. normalization, general-25V～25V is normalized to 0～5V usually; Pass through multicore terminal and the I on data processing unit through the voltage signal after the normalization
2The C bus enters in the data processing controller; Data processing controller at first converts the voltage analog signal that receives to digital signal, compares then and calculates pairing measured value, and again that it is corresponding measured value is presented on the display screen, and deposits in the storer and by USB interface and export.Place the detection controller in the signal input detection unit to have multiway interface (as jtag interface), storage inside has the various information of sensor, as the identify label of sensor, standard signal value, identification code etc., after the sensor starting, it can online detection and on-line debugging by the multiway interface, and its is responsible for carrying out with the data processing controller in data processing unit the exchange of data communication and instruction; It finishes the detection of sensor hot plug, finishes the identification and the self-checking function of sensor identity, and the operation conditions of detecting sensor and adjustment sensor are at optimal operational condition.It is equivalent to the control center of integral sensors.Be connected in analog photoelectricity coupling mechanism on the data processing controller and can isolate out interference from the simulating signal on the power module.
The utlity model has the advantage that weighs the precision height, is convenient for carrying.
Description of drawings
Fig. 1 is the structural representation of the utility model sensor.
Fig. 2 is structural representation of the present utility model (display screen does not connect).
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in the figure, the utility model comprises weighing plate 4, sensor 5 and display screen 3, and weighing plate 4 places on the sensor 5, and sensor 5 bottoms are base 6.Sensor comprises signal input detection unit 1, respectively the data processing unit 2 that is connected with display screen 3 with signal input detection unit 1; Comprise the detection controller 101 that has multiway interface 102 in the signal input detection unit 1, converter 105, the signal conditioning circuit 104 that converter 105 output terminals are connected, respectively with signal conditioning circuit 104 with detect the multicore terminal 103 that controller 101 is connected; Comprise data processing controller 201 in the data processing unit 2, respectively the analog photoelectricity coupling mechanism 204 that is connected with data processing controller 201, storer 205, I
2C bus 206 and USB interface 207 place the power module 202,203 of supplying probe power on the data processing unit 2.Power module 203 is for also using for data processing controller 201.
Placing the detection controller 101 in the signal input detection unit 1 and placing the data processing controller 201 in the data processing unit 2 all is the singlechip chip that contains mixed signal that has the embedded A/D converter of various ports.All be to have various ports specifically, as port and JTAG multiway interfaces such as 12C, SPI, UART, PCA, embedded A/D converter (mould/number sensor) and D/A converter (D/A), contain mixed signal SOC, the C8051F Series chip chip of Silicon Laboratories.This chip power-consumption is smaller, by the jtag interface of multiway, makes sensor 5 can realize online detection and on-line debugging; This chip contains high-frequency clock, can effectively improve the reaction velocity of system.Contain the identity information of sensor at this chip internal memory, self check information, and check code etc.Multicore terminal 103 adopts 10 core S terminals.
Converter 105 is the LOAD CELLS that weight signal are converted to resistance signal, specifically is the single-point type LOAD CELLS, and the deformation that weight caused that it will be placed in the weighing plate 4 is converted to resistance signal.This resistance signal is input in the signal conditioning circuit; Signal conditioning circuit is unified voltage signal, i.e. normalized with this resistance signal according to desired standard handovers.For example, sensor 5 of the present utility model will be converted to the output of 0V voltage by pairing magnitude of voltage when weight-50N, when weight is 50N, pairing magnitude of voltage is converted to 5V voltage and exports described analog photoelectricity coupling mechanism 204 employing HCNR200 analog photoelectricity coupling mechanisms, the interference of isolation mode analog signal fully prevents the impact of the simulating signal of power module to controller.
Claims (5)
1. digital calculation balance, weighing plate, sensor, display screen, weighing plate place on the sensor, are characterised in that sensor comprises the signal input detection unit, respectively the data processing unit that is connected with display screen with the signal input detection unit; Comprise in the signal input detection unit: have the detection controller of multiway interface, converter, the signal conditioning circuit that is connected with converter output end, respectively with signal conditioning circuit with detect the multicore terminal that controller is connected; Comprise in the data processing unit: data processing controller, the analog photoelectricity coupling mechanism, storer, the I that are connected with data processing controller respectively
2C bus and USB interface place the power module on the data processing unit.
2. digital calculation balance according to claim 1 is characterized in that converter is the converter of weighing that weight signal is converted to voltage signal.
3. digital calculation balance according to claim 1 is characterized in that placing the detection controller in the signal input detection unit is the singlechip chip that contains mixed signal that has the embedded A/D converter of various ports.
4. digital calculation balance according to claim 1 is characterized in that placing the data processing controller in the data processing unit is the singlechip chip that contains mixed signal that has the embedded A/D converter of various ports.
5. digital calculation balance according to claim 1 is characterized in that placing two power modules are arranged in the data processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201418843U CN201016785Y (en) | 2006-12-31 | 2006-12-31 | Digital scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201418843U CN201016785Y (en) | 2006-12-31 | 2006-12-31 | Digital scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201016785Y true CN201016785Y (en) | 2008-02-06 |
Family
ID=39057278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201418843U Expired - Fee Related CN201016785Y (en) | 2006-12-31 | 2006-12-31 | Digital scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201016785Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538918A (en) * | 2012-01-04 | 2012-07-04 | 深圳市芯海科技有限公司 | Networking intelligent digital weighing sensor |
-
2006
- 2006-12-31 CN CNU2006201418843U patent/CN201016785Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538918A (en) * | 2012-01-04 | 2012-07-04 | 深圳市芯海科技有限公司 | Networking intelligent digital weighing sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |