Integrated aerosol can information automatic detection and identification device

Abstract

The utility model discloses an integrated aerosol can information automatic detection and identification device, which is characterized in that a non-contact chip label is arranged at the bottom of an aerosol can, and the automatic detection and identification device comprises a non-contact chip label reading head capable of identifying and reading non-contact label information; the device further comprises a weighing sensor, a weighing platform rotationally connected to the weighing sensor, and a bracket fixed to the weighing platform and used for fixing an aerosol can. The device further comprises an L-shaped base, the weighing sensor is fixed on a horizontal bottom plate of the L-shaped base, and the non-contact chip tag reading head is fixed on a vertical side plate of the L-shaped base. According to the device, the concentration of the sterilization gas in the sterilization chamber of the sterilizer in the sterilization stage is calculated by measuring the weight of the aerosol can, and compared with the principle of an ideal gas state equation, the concentration calculation is more accurate, the result can be fed back to a user more visually, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to an integrated automatic detection and identification device for aerosol can information. Background Technique

[0002] Low-temperature sterilization equipment is increasingly widely used. Ethylene oxide has become an ideal sterilizing agent due to its unique physical and chemical properties. Since the application of ethylene oxide sterilization technology, it has always been the preferred method for low-temperature sterilization, and ethylene oxide sterilizers have also been more widely used. The basic factors affecting the disinfection and sterilization effect include the dosage of the sterilizing gas and the action time. That is, under the condition that other conditions remain unchanged, the greater the dosage of ethylene oxide used, the better the disinfection effect; the longer the action time, the better the sterilization effect. Concentration and action time are complementary, but there is a minimum limit for concentration. If the concentration does not reach the minimum requirement, even if the action time is extended, the sterilization requirement cannot be met. Therefore, when operating an ethylene oxide sterilizer for sterilization, the ethylene oxide concentration in the sterilization chamber during the sterilization stage is one of the key factors for the success of sterilization. In addition, it should also be ensured that the ethylene oxide gas used in supporting the ethylene oxide sterilizer during sterilization is within the validity period and the information is traceable.

[0003] At present, when an ethylene oxide sterilizer is in the sterilization stage, the method for detecting the ethylene oxide concentration in the sterilization chamber is as follows:

[0004] ① Direct measurement method: Use a special electrochemical sensor for ethylene oxide gas, which has accurate measurement and real-time measurement. Its disadvantage is that the service life of this sensor is short and the price is very high, and the subsequent use cost for users is very high, and the cost performance is extremely low;

[0005] ② Indirect measurement method: Deduce and calculate according to the thermodynamic formula; from the ideal gas state equation (pV = nRT), it can be known that for an ideal gas, under the conditions of known pressure, temperature, volume, and molar gas constant, the concentration of the ideal gas can be inferred at this time. The advantage of this method is that the physical quantities required for calculation are fixed constants or can be directly measured, and the result data is easy to express and display; however, its disadvantages are also relatively obvious. For example, the distribution of gas in the sterilization chamber is not necessarily evenly distributed in an ideal state, and the temperature in the sterilization chamber is not the same everywhere. Therefore, there will be errors in the method of derivation and calculation, and it is difficult to guarantee the accuracy of the result data; at the same time, in practical applications, the gas is packaged in an aerosol can, such as an ethylene oxide aerosol can. Only when the gas is released can the ethylene oxide gas concentration in the sterilization chamber be calculated. Once the concentration is insufficient to meet the sterilization requirement, this sterilization is judged to be invalid. Even if the sterilization is invalid, the entire sterilization process needs to be run until the residual ethylene oxide gas in the sterilization chamber is completely removed, and only then can a new ethylene oxide aerosol can be replaced and sterilized again; such an operation will increase the time cost for customers during use and the user experience is not good.

[0006] 2) Existing methods for traceability of the expiration date of aerosol cans:

[0007] ① Manual identification: Select and record manually according to the information marked on the aerosol can; the advantage is low cost; the disadvantages are inconvenient use, the possibility of errors, and the inability to form a complete traceability loop. Most sterilizers currently use this method.

[0008] ② Camera identification: Use barcodes or QR codes to stick on the aerosol can; when in use, align the position of the barcode or QR code with the identification area of the sterilizer camera, and the sterilizer reads and records the information; the advantage is to reduce the workload of personnel; the disadvantages are that during operation, the position of the barcode or QR code needs to be aligned with the identification camera, and at the same time, the barcode or QR code cannot be dirty or covered, so the recognition rate is not high; moreover, the information of the aerosol can read is only the information at the time of factory, and its information may change after leaving the factory. For example, the weight of the aerosol can may decrease due to leakage caused by improper transportation or storage, and there is an obvious difference between this actual information and the information at the time of factory read by the camera, which will mislead the users and cause the sterilization failure of the sterilizer. Summary of the Utility Model

[0009] The purpose of the present utility model is to provide a technical solution that can detect the gas concentration in the sterilization chamber of the sterilizer during the sterilization stage, avoid detection deviation caused by uneven temperature in the sterilization chamber or other factors; can automatically identify the information of aerosol cans or gas cylinders, and combine the measured information of the sensors in the device to give a logical judgment to guide users to use qualified aerosol cans.

[0010] To achieve the above purpose, the present utility model provides the following technical solution: An integrated automatic detection and identification device for aerosol can information, with a non-contact chip label configured at the bottom of the aerosol can. The automatic detection and identification device includes a non-contact chip label reader that can identify and read the information of the non-contact label within a loose range of 10 - 20 cm; it also includes a weighing sensor, a weighing platform rotatably connected to the weighing sensor, and a bracket fixed on the weighing platform for fixing the aerosol can; it further includes an L-shaped base, the weighing sensor is fixed on the horizontal bottom plate of the L-shaped base, and the non-contact chip label reader is fixed on the vertical side plate of the L-shaped base.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] First, by measuring the weight of the aerosol can to calculate the sterilization gas concentration in the sterilization chamber of the sterilizer during the sterilization stage, it is more accurate than calculating the concentration using the principle of the ideal gas state equation.

[0013] Second, more intuitively feedback the result to the user. When the weight of the aerosol can is insufficient, it can be determined that the aerosol can cannot be used, without waiting for the result to be given after it enters the sterilization stage, saving time and being safe and reliable.

[0014] Third, the information reading of the aerosol can is faster and more accurate. Because compared with barcode recognition and two-dimensional code recognition, the recognition conditions of this device are relatively loose. There is no need to strictly align with or contact a certain sensor, and the surface is not afraid of dirt.

[0015] Fourth, the information of the aerosol can is highly accurate; because this device does not rely solely on the production information read, and moreover, the aerosol can may leak due to improper transportation or storage, which is inconsistent with the actual information and easily misleads users, thus causing losses; fundamentally achieving "weighing at the time of use" is safer and more accurate. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present utility model.

[0017] Figure 2 is a schematic structural diagram of an aerosol can provided with a non-contact chip tag.

[0018] Figure 3 is a working flowchart of the interaction between the aerosol can information automatic detection and recognition device and the upper computer of the sterilizer.

[0019] In the figure: 1. L-shaped base; 2. weighing sensor; 3. weighing platform; 31. top plate; 32. connecting rod; 4. bracket; 41. base; 42. support column; 43. arc-shaped bottom support; 44. fixing ring; 5. non-contact chip tag reader; 6. aerosol can; 7. non-contact chip tag. Specific Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0021] Embodiment 1

[0022] An integrated aerosol can information automatic detection and recognition device is configured with a non-contact chip tag 7 at the bottom of the aerosol can 6. The automatic detection and recognition device includes a non-contact chip tag reader 5 that can identify and read the information of the non-contact tag 7.

[0023] It further includes a weighing sensor 2, a weighing platform 3 rotatably connected to the weighing sensor 2, and a bracket 4 fixed on the weighing platform 3 for fixing the aerosol can 6.

[0024] It further includes an L-shaped base 1. The weighing sensor 2 is fixed on the horizontal bottom plate of the L-shaped base 1, and the non-contact chip tag reader 5 is fixed on the vertical side plate of the L-shaped base 1.

[0025] Among them, screw holes are provided around the base 41 of the weighing sensor 2, and mating connection holes are provided at corresponding positions on the horizontal plate of the L-shaped base 1. The weighing sensor 2 is fixed to the horizontal plate of the L-shaped base 1 by bolts.

[0026] Among them, a central hole with a certain depth is provided at the top of the weighing sensor 2. The weighing platform 3 is composed of a top plate 31 and a connecting rod 32 at the center of the bottom of the top plate 31. The connecting rod 32 is rotatably connected in the central hole of the weighing sensor 2 through a bearing.

[0027] Furthermore, the bracket 4 is composed of a base 41 of the same size as the weighing platform 3, a support column 42 vertically fixed at the center of the base 41, and a fixing part inclined and fixed on the top surface of the support column 42. The fixing part is composed of an arc-shaped bottom bracket 43 and a plurality of fixing rings 44 integrally connected above the arc-shaped bottom bracket 43.

[0028] Furthermore, four screw holes are circumferentially distributed on the top plate 31 of the weighing platform 3, and a plurality of arc-shaped grooves are circumferentially provided on the base 41. The base 41 is detachably connected to the top plate 31 of the weighing platform 3 by bolts.

[0029] Among them, the outer side surface of the non-contact chip label reader 5 is the induction part, which is arranged opposite to the bracket 4.

[0030] Furthermore, the distance between the bracket 4 and the non-contact chip label reader 5 is 10 - 20 cm.

[0031] This device uses a weighing and metering method to detect the concentration of the sterilization gas in the sterilization chamber during the sterilization stage. Taking an ethylene oxide sterilizer as an example, an ethylene oxide sterilizer generally sterilizes at 54°C - 56°C, and ethylene oxide can play the best role; moreover, the sterilization chamber of an ethylene oxide sterilizer is generally in a negative pressure state during the sterilization stage. Therefore, it can be determined that when the ethylene oxide sterilizer pierces the ethylene oxide aerosol can 6, the ethylene oxide inside it can be completely vaporized and released into the sterilization chamber during the sterilization stage. At the same time, the sterilization chamber of the ethylene oxide sterilizer has a fixed volume, which is a known parameter, and the weight of the empty ethylene oxide aerosol can 6 is a fixed value, which is also a known parameter. In summary, to detect the concentration of ethylene oxide gas in the sterilization chamber of the ethylene oxide sterilizer during the sterilization stage, it is the net content divided by the volume of the sterilization chamber. Its key parameter is the net content of ethylene oxide in the ethylene oxide aerosol can 6; and the net content is the total weight minus the weight of the empty can; the total weight can be directly measured by the weighing sensor 2. Therefore, the total weight of the aerosol can 6 at the optimal concentration can be inversely inferred, and a minimum value can be set for it to determine whether the used aerosol can 6 can meet the use of the ethylene oxide sterilizer.

[0032] Embodiment 2

[0033] The weighing sensor 2 and the non-contact chip tag reader 5 in the device described in Embodiment 1 are both communicatively connected to the host computer of the sterilizer, enabling information interaction with the host computer of the sterilizer, realizing the transmission of aerosol can 6 information and weight information, and recording the obtained information in the host computer for convenient result traceability. Specifically, after powering on, the device communicates with the host computer. The user inserts the aerosol can 6 into the bracket 4 and then removes both hands. After the non-contact chip tag reader 5 recognizes the production information of the aerosol can 6 and the weighing sensor 2 measures the weight of the aerosol can 6, the host computer issues an instruction to obtain and integrate the production information and weight information of the aerosol can 6. The host computer determines whether the aerosol can 6 is usable. If it is usable, the host computer stores the information; if not, the host computer prompts the user to replace the aerosol can 6 with a new one.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic detection and identification device for the information of an integrated aerosol can, characterized in that: A non-contact chip tag (7) is arranged at the bottom of the aerosol can (6), and the automatic detection and identification device includes a non-contact chip tag reader head (5) that can identify and read the information of the non-contact tag (7); It also includes a weighing sensor (2), a weighing platform (3) rotatably connected to the weighing sensor (2), and a bracket (4) fixed on the weighing platform (3) for fixing the aerosol can (6); It also includes an L-shaped base. The weighing sensor (2) is fixed on the horizontal bottom plate of the L-shaped base, and the non-contact chip tag reader head (5) is fixed on the vertical side plate of the L-shaped base.

2. The integrated aerosol can information automatic detection and recognition device according to claim 1, wherein: Screw holes are arranged around the base (41) of the weighing sensor (2), and corresponding connection holes are arranged at corresponding positions on the horizontal plate of the L-shaped base. The weighing sensor (2) is fixed on the horizontal plate of the L-shaped base by bolts.

3. The automatic detection and recognition device for the information of the integrated aerosol can according to claim 1, characterized in that: A central hole with a certain depth is arranged at the top of the weighing sensor (2). The weighing platform (3) is composed of a top plate (31) and a connecting rod (32) at the center of the bottom of the top plate (31). The connecting rod (32) is rotatably connected in the central hole of the weighing sensor (2) through a bearing.

4. The integrated aerosol can information automatic detection and recognition device according to claim 3, characterized in that: The bracket (4) is composed of a base (41) of the same size as the weighing platform (3), a support column (42) vertically fixed in the center of the base (41), and a fixing part obliquely fixed on the top surface of the support column (42). The fixing part is composed of an arc-shaped bottom bracket (43) and a plurality of fixing rings (44) integrally connected above the arc-shaped bottom bracket (43).

5. The integrated aerosol can information automatic detection and recognition device according to claim 4, wherein: Four screw holes are circumferentially distributed on the top plate (31) of the weighing platform (3). A plurality of arc-shaped grooves are circumferentially arranged on the base (41). The base (41) is detachably connected to the top plate (31) of the weighing platform (3) by bolts.

6. The automatic detection and recognition device for the integrated aerosol can information according to claim 1, characterized in that: The outer side of the non-contact chip tag reader head (5) is an induction part, which is arranged opposite to the bracket (4).

7. The integrated aerosol can information automatic detection and recognition device according to claim 6, characterized in that: The distance between the bracket (4) and the non-contact chip tag reader head (5) is 10 - 20 cm.

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