AUTOMATIC PARTICLE MEASUREMENT CART AND AUTOMATIC PARTICLE MEASUREMENT SYSTEM FOR CLEAN ROOM AND MEASUREMENT METHOD THEREOF

• US 20130246004A1
• Filed: 04/06/2012
• Published: 09/19/2013
• Est. Priority Date: 03/15/2012
• Status: Abandoned Application

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Wu, Chun Hao, Lin, Kun Hsien, Wang, Yongqiang, Qi, Minghu, Zhu, Erqing, Li, Xiande
• Application Number:
  US13/510,388
• Publication Number:
  US 20130246004A1
• Time in Patent Office: Days
• US Class Current: 702/188
• CPC Class Codes: G01N 15/06 Investigating concentration of particle suspensions by weighing G01N5/00; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10
• CPC Class Codes: G01N 2015/0046 in gas, e.g. smoke
• CPC Class Codes: G01N 2035/0489 Self-propelled units

Abstract

The present invention discloses an automatic particle measurement cart and an automatic particle measurement system for clean room and a measurement method thereof. The automatic measurement cart includes an automatic piloting device, which guides the cart to move along a pre-set path. The automatic piloting device includes a reading head, which recognizes the pres-set detective path and detects multiple pre-set measurement points. The cart moves along the detective path. A measurement device measures particles at the measurement points. A data processing device receives particle data measured by the measurement device and provides output according to a pre-set rule. With the above manner, the present invention can automatically measure clean room particles at a given site so as to reduce human labor involved and improve the preciseness of measurement result.

Claims

1. An automatic particle measurement cart for clean room, characterized by comprising:

an automatic piloting device, which guides the cart to move along a pre-set path, the automatic piloting device comprising a reading head, the reading head functioning to recognize a pre-set detective path and identify a plurality of pre-set measurement points, the cart being movable along the pre-set detective path;

a measurement device, which measures particles at the measurement points; and

a data processing device, which transmits the measured particle data to the data processing device, the data processing device making output of data according to a pre-set rule.

2. The automatic particle measurement cart for clean room as claimed in claim 1, characterized in that the reading head comprises an electromagnetic sensor, a laser sensor, a magnet-gyro sensor, or a vision-guided sensor.

3. The automatic particle measurement cart for clean room as claimed in claim 1, characterized by further comprising a movement suspension device, wherein the movement suspension device carries out control for suspension of movement when the reading head detects and identifies the measurement points or when the cart reaches pre-loaded measurement points, so that the measurement device measures particles at the measurement points.

4. The automatic particle measurement cart for clean room as claimed in claim 1, characterized in that the data processing device is pre-loaded with data of measurement point, the data of measurement point comprising one or more of the following data:

time interval for carrying out a next automatic measurement operation after completion of a previous measurement operation, time interval for actively carrying out a next automatic measurement operation after identification of abnormal data, positional relationship of spaced measurement points, and acceptable range of particle number.

5. The automatic particle measurement cart for clean room as claimed in claim 4, characterized by further comprising an instruction input device, wherein the instruction input device receives an instruction of initiating an automatic measurement operation and activates the cart to carry out the automatic measurement operation.

6. The automatic particle measurement cart for clean room as claimed in claim 5, characterized in that the data processing device is pre-loaded with an operation instruction for data abnormality, the instruction being such that when the measured data are normal, a next automatic measurement operation is carried out according to the time interval for automatic measurement and when the measured data are abnormal, a next measurement operation is initiated according to the time interval for automatic measurement for data abnormality or an automatic measurement operation is initiated according to an input instruction from the input device.

7. The automatic particle measurement cart for clean room as claimed in claim 5, characterized by further comprising a storage battery and an automatic charging device to supply power for movement to the cart.

8. An automatic particle measurement system for clean room, characterized by comprising the automatic particle measurement cart for clean room as claimed in claim 1 and a detective strip corresponding to the reading head and mounted on ground of a measured space.

9. The automatic particle measurement system for clean room as claimed in claim 8, characterized in that the measurement points set up at predetermined locations on the detective strip have detection power greater than that of surrounding sites.

10. A method for automatic measurement of clean room particle, characterized by comprising the following steps:

storing step;

in which data of measurement point are stored in advance, the data of measurement point comprising one or more of the following data;

time interval for carrying out a next automatic measurement operation after completion of a previous measurement operation, time interval for actively carrying out a next automatic measurement operation after identification of abnormal data, positional relationship of spaced measurement points, and acceptable range of particle number;

moving step;

in which guidance through electromagnetic sensing, laser sensing, magnet-gyro sensing, or vision-guided sensing is employed to detect and recognize pre-set detective path and measurement points and movement is made along the detective path;

measuring step;

in which when a measurement point is detected and recognized, the movement is suspended to carry out measurement of particle at the measurement point, or when movement is made to reach a pre-determined measurement point, the movement is suspended to carry out measurement of particles of the measurement point;

transmitting step;

in which multiple particle data measured by the measurement device are transmitted; and

processing step;

in which the multiple particle data are received and processed.

11. The method for automatic measurement of clean room particle as claimed in claim 10, characterized in that

the storing step further comprises storing an operation instruction for data abnormality, the instruction being such that when the measured data are normal, a next automatic measurement operation is carried out according to the time interval for automatic measurement and when the measured data are abnormal, a next measurement operation is initiated according to the time interval for automatic measurement for data abnormality or the cart is activated to initiate an automatic measurement operation upon receipt of an input instruction for initiating automatic measurement.

12. The method for automatic measurement of clean room particle as claimed in claim 10, characterized in that the processing of multiple particle data further comprises:

outputting multiple particle data according to a pre-set rule.

13. The method for automatic measurement of clean room particle as claimed in claim 12, characterized in that the pre-set rule comprises outputting each particle data upon receiving the individual particle data or collectively outputting all the particle data after completely receiving all the particle data.