CN201837446U

CN201837446U - Keyless electronic platform scale for control through applied force recognition

Info

Publication number: CN201837446U
Application number: CN2009202602024U
Authority: CN
Inventors: 朱惠忠; 贺华军
Original assignee: SHENZHEN LEAGUER HIGH-TECH Co Ltd
Current assignee: SHENZHEN LEAGUER HIGH-TECH Co Ltd
Priority date: 2010-11-12
Filing date: 2010-11-12
Publication date: 2011-05-18
Anticipated expiration: 2020-11-12

Abstract

The utility model disclose a keyless electronic platform scale for control through applied force recognition, which comprises a scale tray (1), a weighting sensor (2), a circuit module (3), a power supply (4), a display (5) and a shell structure (7), wherein the scale tray (1) is connected onto the weighting sensor (2) which sends a sensed load signal to the circuit module (3), the power supply (4) is connected with the circuit module (3) so as to provide a system with power needed for work, and the load signal is processed by the circuit module (3) and then displayed by the display connected on the circuit module (3). In the utility model, extra circuits and elements are not needed, function requirements of previous scales with keys are realized by only recognizing the load characteristics of the existing weight test system with software, and the keyless electronic platform scale is simple in structure and more convenient for use.

Description

Discern the no button electronic platform scale of controlling by acting force

Technical field

The utility model relates to a kind of electronic scales that is used for the weight of object weighing, relates in particular to a kind of electronic platform scale that operation push-button can be realized set feature operation that need not.

Background technology

Electronic platform scale is widely used in the weight of object weighing.The main composition of electronic platform scale comprises the scale pan, LOAD CELLS, circuit module, power supply, display, function button and shell mechanism spare.Wherein function button is used for the function command input of electronic scales, and the information and executing function corresponding operation that the electronic system of electronic scales inside provides by button according to the operator is such as start, shutdown, zero setting, peeling etc.

The function button form is varied, and typical switch form has two kinds: mechanical contact-type button and capacitor induction type button.Typical mechanical contact-type button is formed by contact chip and contact combination, and under the effect of external force (pressing bonding force), contact chip moves down with two contacts and contacts, and the electric conductivity of contact chip makes the contact realize conducting, forms switch motion.Capacitor induction type button principle is that the two ends of switch are made of a pair of interdigital electrode, this forms an electric capacity to interdigital electrode, and receive in the specific switching signal circuit, during when finger touch or near interdigital electrode, can cause the variation of local environment specific inductive capacity, and then cause the change of capacitance parameter, and the output of switch testing circuit is changed, form switch motion.

Mechanical contact formula switch has life problems, and when flexible member wherein reached its fatigue lifetime at the number of times of friction or bending, the mechanical damage accumulation can cause switch failure; The capacitor induction type switch does not have the mechanical damage accumulation, and the life-span is long, but needs to increase the circuit of supporting special use.

The utility model content

The technical problems to be solved in the utility model provides the electronic platform scale of a kind of power that acts on the scale pan by finger or other force application objects person's that comes the identifying operation function command.

For solving the problems of the technologies described above, the utility model has designed corresponding software recognition system, the pressure signal that arrives by computer monitoring, judge switch order, it comprises the scale pan, LOAD CELLS, circuit module, power supply, display, and shell mechanism, the described scale pan is connected on the sensor, sensor sends to circuit module with the load signal of experiencing, the energy that power supply connecting circuit module provides system works to need, after load signal is handled by circuit module, show by the display that is connected on the circuit module, cancelled the electronic platform scale of traditional function button, design has load modes recognition function module in the software of circuit module, by the load form that is subjected on the scale pan is carried out logic identification, identifying operation person's operational order input, judgement is also carried out relevant feature operation.

Described pan of a steelyard is connected on the LOAD CELLS, and during the weighing weight, sensor and circuit module show by the display that is connected on the circuit module after the gravity of the weighed object that is subjected on the scale pan is done respective handling; For identification button operation instruction, in the software of circuit module, designed special signal identification module, by being judged, the type of the acting force that acts on the scale pan comes the recognition function instruction.

Below the utility model is described in further detail: design has a load modes recognition function module in the software of circuit module (3), it is an operational order input that the load form that is subjected on the scale pan (1) is carried out logic identification, according to state logic rule judgment and execution.

When the scale pan is subjected to loading, is connected sensor below the scale pan and will experiences a load step that makes progress and change; When load is laid down, sensor also will be experienced a downward load step and change; When the scale pan is subjected to an of short duration masterpiece time spent, finger or other objects are pushed weighing platform, to produce a fluctuating signal, the central processing unit of circuit module is at above-mentioned several signal change shapes, be identified as respectively and load measurement, off-load measurement and three kinds of different duties of functional command input, and then carry out relevant action.

Circuit module acts on the pulsating force identifying operation person's of the scale pan function command according to finger or other force application objects.

Central processing unit is implemented dynamic monitoring to the output signal of the circuit of weighing, under off-mode, central processing unit is regularly opened, detect the weight on the scale, when detecting weight and have one significantly to increase with respect to previous weight, central processing unit judges that then affirmation has load to add, control start at once makes system enter duty.After system enters open state, enter the detection show state of weighing in real time, when central processing unit detects in short-term a load change, promptly judge and receive operational order, system will judge according to predetermined state logic, carry out the function corresponding operation, as start, peeling, zero setting, shutdown etc.

Outstanding advantage of the present utility model is: only need scale pan plate is applied certain corresponding acting force, sensor produces corresponding signal to this acting force, the central processing unit of circuit module carries out Treatment Analysis to signal, and carry out function corresponding and operate, do not need extra circuit and part, only utilize weighing system and the CPU (central processing unit) that to use, increase corresponding force mode software identification module, needing can realize the functional requirement of tangible button in the past, the platform balance of this processing form has been simplified the platform balance structure, uses more convenient.

Description of drawings

Fig. 1 is that traditional electronic platform scale is formed structural representation;

Fig. 2 is a structural representation of the present utility model;

The loaded-up condition signal schematic representation that Fig. 3 relates to for the utility model.

In Fig. 1: 1, the scale pan; 2, LOAD CELLS; 3, circuit module; 4, power supply; 5, display; 6.1 and 6.2, function button; 7.1 and 7.2, shell mechanism

Embodiment

As Fig. 1, shown in Figure 2, the utility model comprises the scale pan (1), LOAD CELLS (2), circuit module (3), power supply (4), display (5), and shell mechanism (7), it is characterized in that: the described scale pan (1) is connected on the sensor (2), sensor (2) sends to circuit module (3) with the load signal of experiencing, the energy that power supply (4) connecting circuit module (3) provides system works to need, after load signal is handled by circuit module (3), show by the display (5) that is connected on the circuit module (3), LOAD CELLS (2) is formed a gravity measuring system with circuit module (3), design has special signal identification module in the software systems of circuit module (3), come the decision instruction input by the type identification that object (finger or other objects) is acted on the power of the scale pan, and then carry out the function corresponding operation.

As shown in Figure 3, when the scale pan (1) is subjected to loading (finger or weight), is connected the following LOAD CELLS (2) of the scale pan (1) and will experiences a load step variation that makes progress; When load is laid down, LOAD CELLS (2) also will be experienced a downward load step and change; When the scale pan (1) is subjected to an of short duration masterpiece time spent (finger or other objects are pushed), will produce a fluctuating signal; The central processing unit of circuit module (3) is identified as respectively and loads measurement, off-load measurement and three kinds of different duties of functional command input, and then carry out relevant action at above-mentioned several signal change shapes.

For the functional command that receives, circuit module (3) is carried out relevant feature operation in conjunction with the residing duty of electronic scales.

Central processing unit is implemented dynamic monitoring to the output signal of the circuit of weighing, under off-mode, central processing unit is regularly opened, detect the weight on the scale, when detecting weight and have one significantly to increase with respect to previous weight, central processing unit judges that then affirmation has load to add, control start at once makes system enter duty.

After system enters open state, enter the detection show state of weighing in real time, when central processing unit detects a pulsed load in short-term and changes, judge promptly and receive key command that system will judge according to predetermined state logic, carry out the function corresponding operation.

[0020] position of actuation of keys need be operated in certain location unlike traditional tangible button, and actuation of keys of the present utility model can directly be operated on the optional position on the scale pan 1 or the container of institute's weighing or object.

Claims

1. realize the no button electronic platform scale of operation control by acting force identification, comprise the scale pan (1), LOAD CELLS (2), circuit module (3), power supply (4), display (5) and shell mechanism (7), it is characterized in that: the described scale pan (1) is connected on the sensor (2), sensor (2) sends to circuit module (3) with the load signal of experiencing, the energy that power supply (4) connecting circuit module (3) provides system works to need, load signal shows by the display that is connected on the circuit module (3) after handling by circuit module (3).