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Electric lifting table initial height recognition method

A technology of initial height and identification method, applied in the direction of sound wave re-radiation, radio wave measurement system, and utilization of re-radiation, etc., can solve problems such as safety, hidden danger, loss of motor or electrical components, etc., and achieve safe operation and energy consumption. Low and high detection of accurate effects

Inactive Publication Date: 2017-05-10
ZHEJIANG JIECHANG LINEAR MOTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for identifying the initial height of the electric lifting table, which solves the technical problems that the existing electric lifting table has potential safety hazards and causes loss of motors or electrical components when the initial height identification is performed.

Method used

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  • Electric lifting table initial height recognition method
  • Electric lifting table initial height recognition method
  • Electric lifting table initial height recognition method

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, an electric lifting table includes a table plate 1, a lifting column 2 driving the lifting of the table plate 1, and a control system for lifting and controlling the lifting column 2. The electric lifting table is equipped with an ultrasonic rangefinder 3, which Both the ranger 3 and the control system are equipped with a single-chip microcomputer. The ultrasonic range finder 3 is connected to the control system, which means that the single-chip microcomputer in the ultrasonic range finder 3 communicates with the single-chip microcomputer in the control system through a communication protocol. In this embodiment, the ultrasonic rangefinder 3 is installed on the lower bottom surface of the table top 1, and the test port of the ultrasonic rangefinder 3 faces the bottom surface. The ultrasonic rangefinder 3 emits ultrasonic waves from the test port to the ground and receives reflected waves, thereby Get the current height of the desk.

[0039] Such ...

Embodiment 2

[0060] Such as Figure 4 As shown, this embodiment provides another numerical screening method in step 4, which includes the following steps:

[0061] Step S1: the ultrasonic range finder performs m tests to generate m test values;

[0062] Step S2: The ultrasonic rangefinder averages the m test values ​​to obtain the height detection value.

[0063] Compared with the numerical filtering method provided in the first embodiment, the numerical filtering method provided in this embodiment has a simpler processing process of numerical filtering, and the single-chip computer in the ultrasonic rangefinder takes less time to calculate, so it can be completed more quickly The numerical screening of the height test value obtains the height detection value, which further shortens the time for the initial height recognition of the electric lift table.

Embodiment 3

[0065] Such as Figure 5 As shown, this embodiment provides another method for identifying the initial height of an electric lift table, which includes the following steps:

[0066] Step 1: After the control system enters the reset state, it sends a request instruction to the ultrasonic rangefinder;

[0067] Step 2: After receiving the request instruction, the ultrasonic rangefinder transmits ultrasonic waves to the ground to generate a height value, and feed back the height value to the control system;

[0068] Step 7: If the control system does not receive the height feedback of the ultrasonic rangefinder within the set time, it controls the electric lift table to run to the lowest or highest point;

[0069] Step 8: Obtain the position information of the electric lift table through the sensor or limit switch set on the electric lift table, and send the position information to the control system;

[0070] Step 9: After receiving the position information, the control system sets the ini...

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Abstract

The invention discloses an electric lifting table initial height recognition method, so as to solve the technical problem that when the existing electric lifting table is subjected to initial height recognition, hidden safety dangers exist and loss of a motor or an electrical appliance element is caused. The scheme for solving the technical problem mainly comprises the following steps: 1, after a control system enters a reset state, a request instruction is sent to an ultrasonic range finder; 2, after the ultrasonic range finder receives the request instruction, ultrasonic waves are emitted to the ground, a height value is generated, and the height value is fed back to the control system; 3, if the control system receives the height value feedback of the ultrasonic range finder in a set time, a detection instruction is sent to the ultrasonic range finder; and 4, after the ultrasonic range finder receives the detection instruction, multiple height testing values are generated, numerical value selection is carried out on the height testing values, and a height detection value is obtained.

Description

Technical field [0001] The invention belongs to the technical field of lifting devices, and relates to an initial height identification method of an electric lifting table. Background technique [0002] An electric lifting table is a table that is raised and lowered by a lifting column. The lifting column is controlled by the control system. When the electric lifting table is lifting, the control system must recognize the current height of the lifting table to ensure that the lifting column is in its Run within the stroke range. [0003] The prior art scheme for identifying the initial height of the electric lifting table uses the operation of the lifting table to the lowest point or the highest point, and marking the position as the initial point of the lifting column, thereby completing the identification of the initial height of the lifting table. The disadvantage of this method The lifting table must run to a position where the motor can stop rotating. This position is often a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/08
CPCG01S15/08
Inventor 陆小健杨海宇陈雪莉
Owner ZHEJIANG JIECHANG LINEAR MOTION TECH
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