CN209764709U - hand-held type food safety detector - Google Patents
hand-held type food safety detector Download PDFInfo
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- CN209764709U CN209764709U CN201920483112.5U CN201920483112U CN209764709U CN 209764709 U CN209764709 U CN 209764709U CN 201920483112 U CN201920483112 U CN 201920483112U CN 209764709 U CN209764709 U CN 209764709U
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Abstract
The utility model discloses a hand-held food safety detector, which comprises a hand-held food safety detector body, the hand-held food safety detector body is provided with a shell, a display, a handle, a storage battery, a power supply hole, an SD card plug hole, a USB port, a button panel and a buzzer, the hand-held food safety detector body mainly comprises a spectrophotometric detection part, a dry test paper, a colloidal gold chemical detection module, a power supply part, an interface part and a display part, the normal working temperature range of the device is 5-40 ℃, the relative humidity is less than or equal to 85 percent, the device adopts the spectrophotometry detection principle, detecting food, measuring the absorbance of the food at specific wavelength or in a certain wavelength range, the method for qualitatively and quantitatively analyzing the food has the advantages of high sensitivity, simple and convenient operation and high detection speed.
Description
Technical Field
The utility model relates to a food safety inspection technical field specifically is a hand-held type food safety detector.
Background
The fast food safety detector is mainly used for fast quantitative determination of pesticide residue, formaldehyde, nitrite, sulfur dioxide, hydrogen peroxide, available chlorine, histamine, volatile basic nitrogen, diseased meat, benzoyl peroxide and the like in various foods and agricultural products. Where the number indicates the number of valid channels that it has, i.e. N items can be detected. The instrument consists of an ultrahigh-brightness light-emitting diode light source, a colorimetric pool, a high-sensitivity integrated photocell, a microprocessor, a full-Chinese character large-screen liquid crystal screen, an embedded micro thermal printer, a wireless transmission module and an integrated chip, and can directly display the content of relevant indexes in a detected sample on the large-screen liquid crystal screen and print an analysis result.
The related index components in the food sample to be detected and the color developing agent are subjected to specific reaction under certain conditions to generate products with different color depths, the products can selectively absorb visible light with different wavelengths, the color depth, namely the absorbance, is related to the concentration of the index components in the sample, and the product obeys the Lambert-beer law in a proper concentration range. Therefore, the detected absorbance value is automatically calculated by standard curve software built in the instrument, and the accurate concentration of the index component in the sample and the result of whether the index component exceeds the standard or not can be obtained.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hand-held type food safety detector to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hand-held type food safety inspection appearance, includes hand-held type food safety inspection appearance body, be equipped with the device shell on the hand-held type food safety inspection appearance body, the end central authorities of the one end of device shell are equipped with the buzzer mounting groove, the top of device shell is equipped with the panel, pass through screw fixed connection between device shell and the panel, the inside of hand-held type food safety inspection appearance body is equipped with spectrophotometry detector, dry-type test paper, colloidal gold chemical detection ware.
preferably, one side of the device shell is provided with a CD card inserting hole and a USB port, one end of the device shell is provided with a handle, the handle and the device shell are of an integrated structure, the device shell is connected with the handle, a storage battery is arranged inside the handle, a power supply hole is formed in the side wall of the handle, and the power supply hole is connected with the storage battery through a wire.
Preferably, a display is arranged on the panel, and a button panel is arranged on one side of the display.
Preferably, the working environment temperature of the handheld food safety detector body is 5-40 ℃, and the working relative humidity of the handheld food safety detector body is less than or equal to 85%.
Preferably, the photocurrent stability of the spectrophotometric detector in the hand-held food safety detector body is less than or equal to +/-1.0%/3 min, the transmittance accuracy is less than or equal to +/-2.5%, the measurement repeatability is less than or equal to 0.5%, the detection repeatability of the hand-held food safety detector body is less than 5%, and the inter-platform difference of the hand-held food safety detector body is less than 10%.
Compared with the prior art, the beneficial effects of the utility model are that:
The device adopts spectrophotometric detection principle to detect food, measures the absorbance of the detected food at specific wavelength or within a certain wavelength range, and performs qualitative and quantitative analysis on the food.
Drawings
FIG. 1 is a top view of the hand-held food safety detector body of the present invention;
Fig. 2 is the left view of the hand-held food safety detector body of the utility model.
in the figure: 1. a hand-held food safety detector body; 2. a device housing; 3. a display; 4. a handle; 5. a storage battery; 6. a power supply hole; 7. an SD card jack; 8. a USB port; 9. a button panel; 10. a buzzer; 11. a panel.
Detailed Description
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a hand-held type food safety inspection appearance, including hand-held type food safety inspection appearance body 1, be equipped with device shell 2 on the hand-held type food safety inspection appearance body 1, one side of device shell 2 is equipped with CD card jack 7 and USB port 8, the one end of device shell 2 is equipped with handle 4, handle 4 and device shell 2 structure as an organic whole, device shell 2 is connected with handle 4, the inside of handle 4 is equipped with battery 5, be equipped with power hole 6 on the lateral wall of handle 4, power hole 6 passes through the wire and is connected with battery 5.
The end center of one end of the device shell 2 is provided with a buzzer mounting groove, a panel 11 is arranged above the device shell 2, a display 3 is arranged on the panel 11, and a button panel 9 is arranged on one side of the display 3.
The device shell 2 is fixedly connected with the panel 11 through screws, and the handheld food safety detector body 1 is internally provided with a spectrophotometry detector, dry test paper and a colloidal gold chemical detector.
The temperature of the working environment of the hand-held food safety detector body 1 is 5-40 ℃, the relative humidity of the hand-held food safety detector body 1 during working is less than or equal to 85%, the photocurrent stability of a spectrophotometric detector in the hand-held food safety detector body 1 is less than or equal to +/-1.0%/3 min, the transmittance accuracy is less than or equal to +/-2.5%, the measurement repeatability is less than or equal to 0.5%, the detection repeatability of the hand-held food safety detector body 1 is less than 5%, and the inter-platform difference of the hand-held food safety detector body 1 is less than 10%.
When testing the photocurrent stability of the spectrophotometric detector, the hand-held food safety detector body 1 needs to be preheated for 15min, then enters the spectrophotometric detection module, keeps the photic condition of the photodetector, adjusts the transmittance to 100% according to the zero setting key of the instrument control panel, records the transmittance indication value of the instrument, records the transmittance indication value after 3min, and calculates the difference between the two transmittance values and the photocurrent stability.
And entering a spectrophotometric detection module. After the zero point and 100% of the instrument are calibrated by taking air as a reference, 10%, 20% and 30% of spectral neutral filters are respectively placed in a channel, the transmission ratio of each filter is tested, the measurement is continuously carried out for 3 times, and the accuracy delta r of the transmission ratio of the instrument is calculated.
In the formula: t isi-the ith transmittance measurement for each filter;
Ts-a value of the transmittance standard at the corresponding wavelength of each filter;
Transmission specific gravity renaturation deltarCalculating according to the formula (2):
δr＝Tmax-Tmin………………..………………………….…..(2)
In the formula: t ismax-maximum value of transmittance for 3 measurements;
Tmin-minimum of 3 measurements of transmittance.
And (3) entering a dry chemical detection module, selecting detection items to enter a detection interface, preparing a fixed colloidal gold card, putting the card into a detection card slot, recording a detection result, and calculating a test value for 6 times, wherein the maximum difference between the maximum value and the minimum value of the test value is used as an instrument repeatability value.
And (3) entering a dry chemical detection module, selecting detection items to enter a detection interface, preparing a fixed colloidal gold card, respectively placing the card into detection card slots of different instruments, clicking to detect, recording a detection result, continuously testing for 3 times, calculating a test value of each card of each instrument for 3 times, and calculating a CV value of a difference value between instrument stations.
In the formula: s-standard deviation of the test values of a plurality of instruments;
-average of multiple instrument test values.
The device adopts spectrophotometric detection principle to detect food, measures the absorbance of the detected food at specific wavelength or within a certain wavelength range, and performs qualitative and quantitative analysis on the food.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a hand-held type food safety inspection appearance, includes hand-held type food safety inspection appearance body (1), its characterized in that: be equipped with device shell (2) on hand-held type food safety detector body (1), the end central authorities of the one end of device shell (2) are equipped with the buzzer mounting groove, the top of device shell (2) is equipped with panel (11), pass through screw fixed connection between device shell (2) and panel (11), the inside of hand-held type food safety detector body (1) is equipped with spectrophotometry detector, dry-type test paper, colloidal gold chemical detection ware.
2. The hand-held food safety monitor of claim 1, wherein: one side of device shell (2) is equipped with CD card socket (7) and USB port (8), the one end of device shell (2) is equipped with handle (4), and handle (4) and device shell (2) structure as an organic whole, device shell (2) are connected with handle (4), the inside of handle (4) is equipped with battery (5), is equipped with power hole (6) on the lateral wall of handle (4), and power hole (6) are passed through the wire and are connected with battery (5).
3. The hand-held food safety monitor of claim 1, wherein: the display (3) is arranged on the panel (11), and the button panel (9) is arranged on one side of the display (3).
4. The hand-held food safety monitor of claim 1, wherein: the working environment temperature of the handheld food safety detector body (1) is 5-40 ℃, and the working relative humidity of the handheld food safety detector body (1) is less than or equal to 85%.
5. The hand-held food safety monitor of claim 1, wherein: the photocurrent stability of the spectrophotometric detector in the hand-held food safety detector body (1) is less than or equal to +/-1.0%/3 min, the transmittance accuracy is less than or equal to +/-2.5%, the measurement repeatability is less than or equal to 0.5%, the detection repeatability of the hand-held food safety detector body (1) is less than 5%, and the inter-platform difference of the hand-held food safety detector body (1) is less than 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920483112.5U CN209764709U (en) | 2019-04-10 | 2019-04-10 | hand-held type food safety detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920483112.5U CN209764709U (en) | 2019-04-10 | 2019-04-10 | hand-held type food safety detector |
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| CN209764709U true CN209764709U (en) | 2019-12-10 |
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| CN201920483112.5U Active CN209764709U (en) | 2019-04-10 | 2019-04-10 | hand-held type food safety detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607915A (en) * | 2021-04-23 | 2021-11-05 | 重庆工商大学 | Portable compost maturity detector based on embedded system and detection method |
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2019
- 2019-04-10 CN CN201920483112.5U patent/CN209764709U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607915A (en) * | 2021-04-23 | 2021-11-05 | 重庆工商大学 | Portable compost maturity detector based on embedded system and detection method |
| CN113607915B (en) * | 2021-04-23 | 2024-02-02 | 重庆工商大学 | Portable compost maturity detector and detection method based on embedded system |
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