CN201141781Y

CN201141781Y - Pointer type electronic weighing scale

Info

Publication number: CN201141781Y
Application number: CNU2007200611176U
Authority: CN
Inventors: 李梓鸿; 邓焯健
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-07
Filing date: 2007-12-07
Publication date: 2008-10-29
Anticipated expiration: 2017-12-07

Abstract

The utility model relates to a pointer type electronic scale, which comprises a housing, a scale pan, a power supply, a strain sensor, a controller and a value indicating system, wherein the strain sensor converts the bearing force of the scale pan into an electric signal that is processed by the controller and then outputted to the value indicating system, the value indicating system comprises a graduation plate and a pointer, the bearing force of the scale pan is displayed by the pointer and the graduation plate. The electronic scale adopts a pointer type value indicating structure, so as to meet the sensory requirement of most people using the scale, conform to the using habit of people, and overcome the disadvantages that the prior pointer type spring scale is affected greatly by geographical position and environmental temperature, and also has low metering accuracy. The pointer type electronic scale has the advantages of high metering accuracy, high reliability, simple manufacture process and large weighing range.

Description

The pointer electron scale

Technical field

The utility model relates to the utensil of weighing, particularly a kind of electronic weighing instrument of Measuring Object weight.

Background technology

At present, the structure of existing pointer scale mainly comprises load bearing system, lever transmission system, spring deformation actuating system and indicating value system.Load bearing system generally has face-piece and drain pan, and that the lever transmission system generally comprises is long-armed, galianconism and knife rest, and the spring deformation actuating system generally comprises tension spring, tooth bar, gear and reel cage, and generally there are scaleplate and pointer in the indicating value system.The critical component of this type scale is a spring, and spring is subjected to the influence of factors such as geographic position, temperature bigger, makes that the accuracy of measuring of scale is lower.Existing electronic scales normally adopts display screen that the weight of institute's weighing is shown with numeral, and the people of some country not too are accustomed to this type of digital electronic scale.

The utility model content

In order to overcome the deficiency of above existing pointer spring balance and electronic scales, it is less that the purpose of this utility model provides a kind of such environmental effects that is subjected to, the pointer electron scale that the accuracy of measuring is higher.

The technical scheme that its technical matters that solves the utility model adopts is:

The pointer electron scale, comprise shell, the scale pan, power supply, strain transducer, controller and indicating value system, strain transducer converts the power of scale pan load-bearing to electric signal, and by outputing to the indicating value system after the controller processing, described indicating value system comprises scaleplate and pointer, and the power of scale pan institute load-bearing is to show by pointer and scaleplate.

As optimal technical scheme of the present utility model, described controller comprises amplifying circuit, filtering circuit, analog/digital converter and single-chip microcomputer.

As optimal technical scheme of the present utility model, described indicating value system also comprises driver and stepper motor.

As optimal technical scheme of the present utility model, described shell is provided with the setting button.

The beneficial effects of the utility model are, electronic scales adopts pointer indicating value structure, satisfied the sense organ requirement of many human scales, meet being accustomed to of people with scale, overcome existing pointer spring balance and be subjected to geographic position, ambient temperature effect bigger, the shortcoming that the accuracy of measuring is lower has accuracy of measuring height, with a high credibility, advantages such as manufacturing process is simple, and range of weighing is big.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further specified:

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

Fig. 2 is the longitudinal profile structural map of one of the utility model embodiment;

Fig. 3 is the front projection structural map of one of the utility model embodiment;

Fig. 4 is two the longitudinal profile structural map of the utility model embodiment;

Fig. 5 is two the front projection structural map of the utility model embodiment;

Fig. 6 is three the longitudinal profile structural map of the utility model embodiment;

Fig. 7 is three the front projection structural map of the utility model embodiment.

The accompanying drawing sign is as follows:

1 shell, 11 scales pan, 2 strain transducers, 3 controllers, 4 drivers, 5 power supplys, 6 stepper motors, 7 scaleplates, 71 pointers.

Embodiment

One of embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, the pointer electron scale, comprise shell 1, the scale pan 11, power supply 5, strain transducer 2, controller 3 and indicating value system, shell 1 is provided with the setting button, strain transducer 2 converts the power of the scale pan 11 load-bearing to electric signal, and by outputing to the indicating value system after controller 3 calculating, the indicating value system comprises scaleplate 7 and pointer 71, and the power of 11 load-bearing of the scale pan is to show by pointer 71 and scaleplate 7.

In the present embodiment, the scale pan 11 is made as one with shell 1, scaleplate 7 and pointer 71 are arranged on the one side on the scale pan 11 surfaces, strain transducer 2 has 4, place in the shell 1 and be distributed in position, four angles near the scale pan 11, controller 3 comprises amplifying circuit, filtering circuit, analog/digital converter and single-chip microcomputer, and single-chip microcomputer comprises CPU.The indicating value system also comprises driver 4 and stepper motor 6.Its course of work is as follows: when object is placed on the scale pan 11, pressure is applied to sensor 2, deformation takes place in sensor 2, its impedance and driving voltage are changed, export simulating signal then, this signal is input to controller 3, output to analog to digital converter through the amplifying circuit amplification, convert digital signal to and output to the CPU s operation control, CPU outputs to driver 4 according to order and program with result of calculation, send signal by driver 4, drive stepping motor 6 drives scaleplate 7 or pointer 71 rotates, thereby shows the gravimetric value of the object of being weighed.

Two of embodiment

As shown in Figure 4 and Figure 5, the scale pan 11 is made as one with shell 1, and the scale pan 11 is connected with 1 strain transducer 2, and sensor 2 is arranged in the shell 1 and is positioned at the centre position of the scale pan 11.Other structure and the course of work of present embodiment are identical with one of embodiment.

Three of embodiment

As shown in Figure 6 and Figure 7, the scale pan 11 is arranged at the top of shell 1, and the scale pan 11 is connected with 1 strain transducer 2, and scaleplate 7 or pointer 71 are positioned at the side of shell 1.Other structure and the course of work of present embodiment are identical with one of embodiment.

Claims

1, pointer electron scale, comprise shell (1), the scale pan (11), power supply (5), strain transducer (2), controller (3) and indicating value system, strain transducer (2) converts the power of scale pan load-bearing to electric signal, and by outputing to the indicating value system after controller (3) processing, it is characterized in that: described indicating value system comprises scaleplate (7) and pointer (71), and the power of the scale pan (11) institute load-bearing is to show by pointer (71) and scaleplate (7).

2, pointer electron scale according to claim 1 is characterized in that: described controller (3) comprises amplifying circuit, filtering circuit, analog/digital converter and single-chip microcomputer.

3, pointer electron scale according to claim 1 is characterized in that: described indicating value system also comprises driver (4) and stepper motor (6).

4, pointer electron scale according to claim 1 is characterized in that: described shell (1) is provided with the setting button.