TWI662265B - Residual toxicant detection device - Google Patents

Abstract

The present disclosure is a residual poison detection device, which can be used to detect the residual poison of an aqueous solution to be tested. The residual poison detection device includes a housing forming a containing space, and a water inlet hole and a water outlet hole are located on the housing for the standby. The inflow and outflow of the aqueous solution are measured, the sensing cavity is set in the accommodating space, the light source transmitter and the light sensor are set beside the sensing cavity, the light source transmitter emits light in a wavelength range, and the light sensor receives and passes The circuit board is used to receive light in the wavelength range of the sensing cavity, and the circuit board is used to receive the sensing signal sensed by the light sensor, so as to calculate the absorbance and change in absorbance of the residual poison in the aqueous solution to be measured.

Description

   Residual poison detection device   

This disclosure relates to a technology for detecting residual poisons, and in particular, it relates to a device for detecting residual poisons for detecting a change amount of poisons in water.

Existing food testing uses multiple sampling methods. At present, food safety is extremely important. For the detection of residual toxicants, for example, pesticides may remain when fruits and vegetables are obtained, but few people carry out pesticide residues on fruits and vegetables. Detection.

At present, common methods for rapid screening of pesticides include biochemical and spectroscopic methods. Among the above-mentioned biochemical methods, the fast-screening detection method is a biochemical tritium inhibition method, which requires sampling with a fixed specimen and a biochemical tritium reaction, which is difficult for consumers to accept. Moreover, the biochemical methods currently used only include organophosphorus and carbamate pesticides. It is not able to comprehensively detect all pesticides. In addition, this method also has the worry of incorrect detection (false negatives ~ 35%, false positives ~ 50%), especially for prohibited pesticides that cannot be added, which may not be effectively detected. Considering that the general public needs home testing, the biochemical method contains many complicated procedures similar to laboratories, so it is difficult to apply to general home testing.

In the aforementioned spectroscopic method, spectral comparisons are used to determine the types of pesticides and to determine the concentration. However, there are currently more than 300 types of pesticides registered for use. The difficulty of database comparison increases, that is, a large number of comparisons are required, which results in detection difficulties high. In addition, the use of this method can not avoid the need for quantitative sampling, so it is difficult to be accepted by consumers, and LC / MS / MS (that is, liquid chromatography (LC) and mass spectrometer (MS) used in series) or high performance liquid chromatography The high performance liquid chromatography (HPLC) method cannot be widely used due to its high cost, and it is quite time-consuming.

It can be known from the above that if a detection technology can be found and suitable for general home testing, in particular, it can effectively monitor whether the residual pesticide poisons are removed without destroying the detection substance and without the need for quantitative sampling. Technical issues urgently solved by those in the technical field.

The purpose of the present invention is to propose a mechanism for detecting residual poisons and a device using the detection mechanism. By continuously measuring the absorbance and change in absorbance of residual poisons in an aqueous solution, as the removal of residual poisons in an aqueous solution meets the expected standard. Judgment basis, and this device is suitable for general home measurement.

This disclosure proposes a residual poison detection device for detecting the residual poison of an aqueous solution to be tested. The residual poison detection device includes: a casing to form a containing space; a water inlet hole formed on the casing and connected to the casing. A accommodating space for the aqueous solution to be measured to flow into the accommodating space through the water inlet hole; a sensing cavity provided in the accommodating space for the aqueous solution to be measured to flow in the sensing cavity; a light source emitter, The light sensor is arranged beside the sensing cavity to emit a light passing through the sensing cavity; the light sensor is arranged beside the sensing cavity to sense the light passing through the sensing cavity; A water outlet hole formed on the housing and connected to the accommodation space for the aqueous solution to be tested to flow out of the accommodation space through the water outlet hole; and a circuit board electrically connected to the light sensor for receiving A sensing signal sensed by the light sensor.

The residual toxicant detection device proposed in this disclosure detects the absorption of residual toxicants in an aqueous solution through a light sensing mechanism. The residual toxicant detection device of this disclosure is a hand-held design, which can be placed in the aqueous solution to be tested and absorbed through The water solution to be tested is tested, and the test result can be displayed through the light. It is not only suitable for general household testing, but also designed as a whole machine with waterproof and wireless charging capabilities, which highlights its practicality. In addition, the light-sensing mechanism used in this disclosure does not face the problems of large databases for quantitative sampling, qualitative analysis, and quantitative analysis, so it can be used by ordinary households at low cost.

1‧‧‧ residual poison detection device

10‧‧‧shell

101‧‧‧ Upper cover

102‧‧‧ lower cover

1021‧‧‧side

1022‧‧‧ Underside

1023‧‧‧ bevel

111‧‧‧inlet

112‧‧‧outlet

12‧‧‧ sensing cavity

13‧‧‧light source emitter

14‧‧‧light sensor

15‧‧‧Pu

16‧‧‧Circuit Board

17‧‧‧O-ring

181, 182, 183‧‧‧ pipe fittings

19‧‧‧ Battery

20‧‧‧The first wireless charging module

21‧‧‧ partition

221‧‧‧The first skeleton

222‧‧‧Second Skeleton

23‧‧‧LED display light

241, 242, 243‧‧‧ adapters

25‧‧‧Shell

26‧‧‧ bottom cover

261, 262‧‧‧holes

27, 28, 291, 292‧‧‧ screws

3‧‧‧ base

31‧‧‧ base cover

32‧‧‧ base lower cover

33‧‧‧ button

34‧‧‧base circuit board

35‧‧‧Second wireless charging group

36‧‧‧Second LED display light

37, 38‧‧‧ Screw

Figures 1A and 1B are the overall appearance and exploded view of the residual poison detection device of the disclosure; Figure 2 is a schematic diagram of the internal flow channel of the residual poison detection device of the disclosure; Figures 3A and 3B are the residual poison of the disclosure The schematic diagram of the casing of the detection device; and Figures 4A and 4B are the overall appearance and exploded views of the base corresponding to the residual poison detection device disclosed in this disclosure.

The technical content of this disclosure is described below with specific specific implementation forms. Those familiar with this technology can easily understand the advantages and effects of this disclosure from the content disclosed in this specification. However, this disclosure can also be implemented or applied by other different specific implementation forms.

In an embodiment, please refer to FIG. 1A and FIG. 1B, which are an overall appearance view and an exploded view of the residual poison detection device of the present disclosure. As shown in FIG. 1A, the residual poison detection device 1 of the present disclosure is a hand-held size and has a cylindrical appearance. There are two holes near the bottom of the device to allow the aqueous solution to be tested in and out. The residual poison detection device 1 can be placed in a waiting room. In the test solution, it is used to detect the absorbance of residual poison in the test solution.

As shown in FIG. 1B, an exploded view of the residual poison detection device 1 of the present disclosure. The residual poison detection device 1 mainly includes a casing 10, a water inlet hole 111, a water outlet hole 112, a sensing cavity 12, a light source transmitter 13, a light sensor 14, a pump 15, and a circuit board 16.

The casing 10 is a hollow casing, which constitutes the exterior of the residual poison detection device 1 and provides the function of waterproofing the residual poison detection device 1. The interior of the casing 10 forms a receiving space for the sensing cavity 12, the light source transmitter 13, The photo sensor 14, the pump 15, and the circuit board 16 are disposed therein. The material of the casing 10 may be a waterproof material.

In an embodiment, the casing 10 may include an upper cover 101 and a lower cover 102, and the upper cover 101 and the lower cover 102 are combined to form the aforementioned accommodating space.

The water inlet hole 111 is located on the casing 10 for the aqueous solution to be measured to flow into the accommodating space, and the water outlet hole 112 is also located on the casing 10 for the aqueous solution to be measured to flow out of the accommodating space. If the casing 10 is a combination of the upper cover 101 and the lower cover 102, the water inlet hole 111 and the water outlet hole 112 may be provided in the lower cover 102, and when the upper cover 101 and the lower cover 102 are combined, the residual poison detection device 1 is hermetically sealed. Only the water inlet hole 111 and the water outlet hole 112 are available for the water solution to be tested in and out.

In addition, the water inlet hole 111 and the water outlet hole 112 can be set as far as possible from the two ends of the lower cover 102 to avoid the liquid discharged from the water outlet hole 112 being immediately sucked into the water hole 111, which affects the effect of continuously detecting the absorption of residual poisons in the aqueous solution to be tested. .

The sensing cavity 12 is disposed in the accommodating space of the casing 10 and can be used for flowing the aqueous solution to be measured therein. In short, after the aqueous solution to be tested enters the inside of the residual poison detection device 1 from the water inlet 111, the absorption degree of the residual poison in the aqueous solution to be tested is detected in the sensing cavity 12 through the sensing cavity 12. The material of the sensing cavity 12 may be quartz or fused silica.

The light source transmitter 13 and the light sensor 14 may be disposed beside the sensing cavity 12. The light source transmitter 13 is used to emit light in a wavelength range. The light sensor 14 may sense the wavelength range passing through the sensing cavity 12. Of light. As mentioned above, this disclosure provides a light sensing mechanism. A light source transmitter 13 and a light sensor 14 are provided beside the sensing cavity 12. The light is transmitted and sensed through a light having a wavelength range. Basis for judging the absorption of residual poisons.

In order to detect various poisons, the light source emitter 13 may be an ultraviolet LED lamp (UV LED). In addition, the light emitted by the light source emitter 13 may have different specific wavelength ranges. In one embodiment, the specific wavelength range may include 220-240 nm, 250-270 nm, or 270-290 nm.

The pump 15 is disposed in the accommodating space of the casing 10 to drive the flow of the aqueous solution to be measured. The aqueous solution to be measured enters through the water inlet hole 111, passes through the sensing cavity 12, and finally flows out from the water outlet hole 112. In short, the operation of pump 15 allows the aqueous solution to be tested to flow in the pipeline in the accommodation space.

The circuit board 16 is electrically connected to the light sensor 14 for receiving a sensing signal sensed by the light sensor 14. An operation can be performed in the circuit board 16 to calculate the absorbance and change in absorbance of the residual poison in the aqueous solution to be measured by the sensing signal, that is, through continuous detection of the light source transmitter 13 and the light sensor 14, The detected sensing signal can be used by the circuit board 16 to calculate the absorbance of the residual poison in the aqueous solution to be measured, and to obtain the change in the absorbance by changing the absorbance.

Specifically, when the aqueous solution to be measured passes through the sensing cavity 12, because the residual poison reacts with light of a specific wavelength range, the light sensor 14 will sense light passing through the specific wavelength range of the sensing cavity 12, A sensing signal is generated.

The functions and operations of the circuit board 16 are described below. The circuit board 16 may include a driving unit, a reading unit, a memory unit, a computing unit, a transmission unit, and a display unit. The above units may be presented in software or firmware. These units form a microcontroller (MCU) to achieve the circuit. The board 16 has internal calculation, control, drive, transmission and other functions, and provides different circuit configurations according to different functions to achieve signal transmission or control with the light source transmitter 13, light sensor 14, pump 15 and other components.

The driving unit can be used to drive the operation of various components, including the switch of the light source emitter 13. Since the light source emitter 13 may be multiple, the driving unit controls whether the light source emitter 13 is turned on or not. In addition, under continuous sensing requirements, the light source transmitter 13 may also emit light at intervals, or the light sensor 14 may sense light at intervals, which may also be controlled by the driving unit. The drive unit can also provide other components as required.

The reading unit is used for reading a sensing signal at a fixed time interval. The reading unit mainly receives the sensing signal from the light sensor 14. As mentioned above, the driving unit can make the light source transmitter 13 and the light sensor 14 have a space effect, so the reading unit can be at a fixed time interval. Reading the sensing signal, this also has the effect of interval value.

The memory unit can be used for storing sensing signals. For subsequent data calculations, such as calculating the average, the sensing signal will be stored in the memory unit.

The computing unit may be configured to calculate a change in absorbance according to the sensing signal and the correction value, thereby generating a detection result. The calculation of the change in the absorbance of the aqueous solution to be measured and the degradation calculation and judgment of the monitored values obtained under continuous monitoring will be further explained later.

The transmission unit is used to transmit the detection result to an external device. The external device may be a corresponding device or an electronic device such as a mobile phone, a microcomputer, a tablet, a laptop, etc. In this disclosure, the electronic device may send a detection result through a wireless transmission mechanism, and the corresponding device may be, for example, a base on which the residual poison detection device 1 is placed. (Detailed later).

The display unit can be used to display the test results. For example, the display unit can be connected to an LED light or a display screen to display the detection result. In addition to the above-mentioned main components, the residual poison detection device 1 also includes other components, thereby constituting the residual poison detection device 1 with functions such as waterproofness and wireless charging.

In the embodiment in which the casing 10 includes an upper cover 101 and a lower cover 102, the residual poison detection device 1 may further include an O-ring 17, wherein the O-ring 17 is disposed between the upper cover 101 and the lower cover 102, and may be located on the upper cover 101. When combined with the lower cover 102, the junction of the two is tightly closed to avoid the aqueous solution to be measured flowing into the residual poison detection device 1, so the residual poison detection device 1 has a waterproof effect of the whole machine.

The residual poison detection device 1 further includes pipe fittings 181, 182, and 183. These pipe fittings 181, 182, and 183 can be used for connection between the water inlet hole 111, the pump 15, the sensing cavity 12 and the water outlet hole 112, thereby forming a Flow channel. As shown in the figure, the water inlet 111 is connected to one end of the pipe 181, the other end of the pipe 181 is connected to one end of the pump 15 through the adapter 241, and the other end of the pump 15 is connected to one end of the pipe 182 through the adapter 242. One end is connected to the inlet of the sensing cavity 12, and the outlet of the sensing cavity 12 is connected to one end of the pipe 183 through the adapter 243. Finally, the other end of the pipe 183 is connected to the water outlet 112. It can be known from the above that components such as the water inlet hole 111, the pump 15, the sensing cavity 12 and the water outlet hole 112 pass through the pipes 181, 182, 183 and several adapters, and the entire flow channel forms a path for the aqueous solution to be tested to pass through.

The residual poison detection device 1 further includes a battery 19. The battery 19 can provide power required by the pump 15, the light source transmitter 13, the light sensor 14, and the circuit board 16 during operation.

The residual poison detection device 1 further includes a first wireless charging module 20, which is disposed in the accommodating space of the housing 10. It can cooperate with external devices for wireless charging, and the power generated by it can be stored in the battery 19.

The residual poison detection device 1 further includes a separator 21, which is disposed between the battery 19 and the first wireless charging module 20. The separator 21 is made of metal, except that it can separate the first wireless charging module 20 and the battery. In addition, the first wireless charging module 20 can also be prevented from being interfered during wireless charging. In addition, another purpose of the partition plate 21 is to make the center of gravity of the residual poison detection device 1 at the lower end. In this way, the residual poison detection device 1 can be semi-floating, semi-sinking, or completely sinking in the aqueous solution to be tested when in use.

The residual poison detection device 1 further includes a first skeleton 221 and a second skeleton 222. The pump 15 and the sensing cavity 12 are disposed between the first skeleton 221 and the second skeleton 222. More specifically, the first skeleton 221 and After the second frame 222 is combined, the pump 15 and the sensing cavity 12 are enclosed therein to avoid the measurement abnormality caused by the shaking of the pump 15 and the sensing cavity 12 during operation.

As shown in FIG. 1B, the circuit board 16 is disposed on the side of the first frame 221, but is not limited thereto. The circuit board 16 may also be disposed beside the second frame 222. In addition, the light source emitter 13 may be disposed on the first frame 221, and the light sensor 14 may be disposed on the second frame 222.

In order to perform the detection, the light source emitter 13 and the light sensor 14 may be respectively disposed on both sides of the sensing cavity 12, that is, the light emitted by the light source emitter 13 will pass through the sensing cavity 12 and be sensed by the light sensor 14. . However, this disclosure is not limited to this, that is, the light source transmitter 13 and the light sensor 14 can also be disposed on the same side of the sensing cavity 12, and then reach the light source transmitter 13 through the role of a light reflector or other mirror group. After the emitted light passes through the sensing cavity 12, it is sensed by the light sensor 14.

In this embodiment, the light source emitter 13 and the light sensor 14 are each one, but not limited to this, a plurality of light source emitters 13 and the light sensor 14 may be provided around the sensing cavity 12.

In addition, the residual poison detection device 1 further includes an LED display lamp 23, which can be disposed on the circuit board 16. The LED display lamp 23 can generate different colors of display according to the absorbance, that is, according to the absorbance of the aqueous solution to be measured, for example, Red light, yellow light or green light is displayed to let the inspector know the detection status of the aqueous solution to be tested.

When integrated, the O-ring 17 can be locked on the lower cover 102 through a screw 27, the lower cover 102 and the upper cover 101 can be locked through a screw 28, and the first frame 221 and the second frame 222 can be screwed. 291 are fastened to each other, and the circuit board 16 can also be fastened to the first frame 221 through a screw 292. Screws 27, 28, 291, 292 can be fitted with soft or hard washers to increase overall tightness.

In addition, the residual poison detection device 1 further includes a casing 25 and a bottom cover 26. The casing 25 can be sleeved on the exterior of the residual poison detection device 1 after the upper cover 101 and the lower cover 102 are combined. In addition to being beautiful, it can also protect the entire residual poison detection device 1. After the bottom cover 26 is sleeved in the outer casing 25, the outer casing 25 and the lower cover 102 are partially covered by the lower end of the residual poison detection device 1, which can protect the bottom of the residual poison detection device 1 and prevent the locking screw 28 from being exposed.

Please refer to FIG. 2, which is a schematic diagram of an internal flow channel of the disclosed residual poison detection device. As shown in the figure, the component composition is the same as that shown in FIG. 1B. The pump 15 and the sensing cavity 12 are disposed between the first skeleton 221 and the second skeleton 222. The light source emitter 13 may be disposed on the first skeleton 221. The light sensor 14 may be disposed on the second frame 222, and the circuit board 16 may be disposed on a side of the first frame 221. In this embodiment, only the flow path of the aqueous solution to be measured in the residual poison detection device 1 will be described.

The aqueous solution to be tested enters the residual poison detection device 1 through the water inlet 111. The water inlet 111 is first connected to the pipeline 181, and then the pipeline 181 is connected to the water inlet end of the pump 15 through a adapter 241, and the water outlet end of the pump 15 passes through a adapter. 242 is connected to the water inlet end of the pipeline 182. After a turn, the pipeline 182 is connected to the water inlet of the sensing cavity 12, so that the aqueous solution to be tested can be light-sensed.

In a preferred embodiment, the aqueous solution to be measured enters the water from below the sensing cavity 12 and exits the water from above the sensing cavity 12. If the water enters from above, the sensing cavity 12 may easily form a cavity (with air). Will affect the sensing. After the aqueous solution to be measured flows out from the water outlet of the sensing cavity 12, it is connected to the water inlet end of the pipeline 183 through a adapter 243, and the water outlet end of the pipeline 183 can be connected to the water outlet hole 112. The above is the flow path of the aqueous solution to be measured in the residual poison detection device 1 of the present disclosure.

This disclosure calculates the change in the absorbance of the residual toxicant in the aqueous solution through the sensing signal. The judgment mechanism can be to increase the value of the cumulative detection count when the change in the absorbance of the aqueous solution to be tested is less than the threshold value. The detection result is issued when the detection count is greater than or equal to the set value. In actual operation, a correction value, also called background value, can be obtained before detection, that is, the detection signal value obtained by the aqueous solution to be tested without any object to be tested, and the poisonous substance in the aqueous solution to be tested can be obtained through the sensing signal. Value and correction value, the detection value is the signal value obtained when the light sensor detects, so the change of the absorbance of the residual poison in the aqueous solution to be measured can be calculated.

The following two judgment methods are proposed. The first judgment method is in continuous monitoring. If the change in the absorbance of the aqueous solution to be measured is less than a preset threshold, the value of the cumulative detection count can be increased by 1. Because the amount of change in absorbance is not large, it is equivalent to the removal of residual poisons contained in the test object has been reduced to a certain degree. However, in order to avoid the misjudgment of a single test, this is regarded as a record. That is, when the amount of change in absorbance is lower than the threshold value, it will be recorded once in the cumulative detection count. Finally, when the cumulative detection count reaches the set value, it means that the poison residue on the test object has reached the state where the removal is stopped.

The second judgment method is that the detection result can be generated when the change in the absorbance of the aqueous solution to be measured is continuously less than the threshold value for a predetermined number of times. Specifically, the occurrence of the change in the absorbance of the aqueous solution to be measured that is smaller than the threshold may occur continuously or discontinuously, and the value of the aforementioned cumulative detection count plus 1 is the cumulative occurrence of a certain set number of times (set value) Next, it is determined that the poison residue on the test object has reached the state where the removal is stopped, and this method proposes that when the amount of change in the absorbance of the aqueous solution is less than the threshold value, it is continuously generated for a predetermined number of times, such as five times less than the threshold value, continuously The cumulative count has reached five times, and it can be judged that the poison residue on the test object has reached a state where the removal is stopped.

Through the aforementioned detection mechanism, through the process of continuous detection, observe the absorbance of the aqueous solution to be tested to determine the amount of toxic residue in the test substance, and will obtain the amount of change in absorbance that meets the expected standard multiple times or continuously meets the expected standard, etc. In the case, it is determined that the toxic residue of the test object has reached a state where the removal is stopped. According to this, the inspection method of this disclosure is simple and does not need to be compared through a large database containing multiple toxicological data, so it is beneficial for the general public to implement this detection process.

The following will further explain how to calculate the change in the absorbance of the aqueous solution to be measured, and the degradation calculation and judgment of the monitored values obtained under continuous monitoring.

As mentioned above, this disclosure can obtain a correction value (also called background value, which can include units such as voltage or power) before detection, that is, a detection signal value obtained without any object to be measured. The absorbance can be obtained by comparing the correction value with the detection value, wherein the farther the detection value and the correction value are from each other, the larger the absorbance is, and the closer the detection value is to the correction value, the smaller the absorbance is. The mathematical calculation formula shown in the following formula (1) can represent an example of calculation of the absorbance.

Absorbance = -20 x log (detected value / corrected value) Equation (1)

Among them, the above -20 must be a negative number, that is, a negative part is necessary, and 20 is an adjustable value, and the detection value is a signal value (including units such as voltage or power) obtained when the light sensor detects. It can be inferred from the above formula (1) that a larger absorbance indicates a larger gap between the detection value and the correction value, and a smaller absorbance indicates that the detection value is closer to the correction value. The above formula (1) is only an example, so the calculation of the absorbance is not limited to this mathematical formula.

In addition, degradation calculations and judgments are also used in the calculation. This disclosure can adopt a fixed time interval detection method, for example, to obtain X pen absorbance calculation results. When the accumulated X pen data is accumulated, the X pen data is first averaged, and then The average value is subtracted from each piece of data, so the change amount of each piece of data relative to the average value can be obtained. For example, you can calculate the average every ten strokes.

When the amount of change is less than a threshold value Y, this means that the amount of change is not large compared to the average value. It is within the expected range and can be accumulated once. For example, the Y value can be set according to demand. For example, the Y value can be 0.05dB. Finally, when the cumulative number of Z pens is reached, it can be regarded as the state where the removal of the remaining poison of the test object has stopped. For example, after five accumulations, it can be determined that the residual poison has reached a state where removal has stopped. In one embodiment, this accumulation is continuous accumulation. After the accumulation of Z times in a row, the determination of the removal of the residual poison to stop is performed.

In summary, this disclosure does not need to know the type of the test object (poison) in advance, but can detect the residue on the test object by detecting the change in the absorbance of the test solution in the aqueous solution. The removal efficiency of poisons, because the absorbance of the aqueous solution to be tested will continuously change during the cleaning of the test object, the device can continue to detect until the change in absorbance is less than the set threshold and reaches a certain cumulative number, or it is continuous. After reaching a predetermined number of times, it means that the residual poison content of the test object is lower than the set standard.

Please refer to Figs. 3A and 3B, which are schematic diagrams of the casing of the residual poison detection device of the present disclosure. As shown in FIG. 3A, the upper cover 101 is combined with the lower cover 102, and then is covered by the casing 25, and the bottom cover 26 is covered by the casing 25, and then part of the casing 25 and part of the casing are covered by the residual poison detection device. The cover 102 and the bottom cover 26 are provided with two holes 261 and 262 to correspond to the water inlet hole 111 and the water outlet hole 112 on the lower cover 102.

The casing 25 may have a thickness of 0.5 mm. In addition, the casing 25 may be made of metal, but it is not limited to this. The casing 25 and the upper cover 101 and the lower cover 102 of plastic material may be combined through AB glue.

As shown in FIG. 3B, when the upper cover 101 is combined with the lower cover 102, the tightness between the two can be strengthened through the O-ring 17 to prevent the influent of the aqueous solution to be measured. After the upper cover 101 is combined with the lower cover 102, The casing 25 covers part of the upper cover 101 and part of the lower cover 102. Among them, the casing 25 does not cover the bottom of the lower cover 102. This is a wireless charging end. To avoid affecting wireless charging, it is not covered there. Finally, the bottom cover 26 After the casing 25 is inserted, part of the casing 25 and part of the lower cover 102 are covered.

In addition, the lower cover 102 may include a side surface 1021, a bottom surface 1022, and an inclined surface 1023 located between the side surface 1021 and the bottom surface 1022. In this embodiment, the water inlet hole and the water outlet hole may be provided on the inclined surface 1023, but is not limited thereto. The water inlet hole and the water outlet hole may also be provided on the side surface 1021. If the gravity center of the residual poison detection device is taken into consideration, that is, the residual poison detection device will stand upright during use, which may cause the bottom cover 102 of the residual poison detection device to bottom, so it is not considered to set the water inlet hole and the water outlet hole on the bottom surface 1022.

Please refer to FIGS. 4A and 4B, which are an overall appearance view and an exploded view of a base corresponding to the residual poison detection device of the present disclosure. Considering the placement and wireless charging requirements of the residual poison detection device 1 when not in use, an external base may be provided for the residual poison detection device 1 to be placed and charged.

As shown in FIG. 4A, it is an external view of the base 3. The base 3 has a recessed portion for the residual poison detection device 1 (housing) to be placed, and the residual poison detection device 1 can also be wirelessly charged when placed on it. The base 3 includes a button 33 for the detector to start the operation of the residual poison detection device 1.

As shown in FIG. 4B, it is an exploded view of the base 3. The base 3 is mainly composed of a base upper cover 31, a base lower cover 32, a button 33, a base circuit board 34, and a second wireless charging group 35.

The upper cover 31 of the base can be screwed into the lower cover 32 of the base, the button 33 can be provided on the upper cover 31 of the base, the base circuit board 34 can be locked to the lower cover 32 by the screw 37, the base circuit board 34 and the second wireless charging The group 35 is located in the space after the upper cover 31 and the lower cover 32 of the base are combined.

The second wireless charging module 35 may be disposed above the base circuit board 34 to match with the first wireless charging module of the residual poison detection device to perform wireless charging. The distance between the first wireless charging module of the residual poison detection device and the second wireless charging module 35 of the base 3 is about 5 mm. The related wireless charging technology is well known to those skilled in the art, so it will not be described in detail.

The base 3 also includes a second LED display lamp 36, which can generate different color displays according to the absorption. In short, the residual poison detection device will sense and obtain the absorbance of the residual poison in the aqueous solution to be tested. In addition to the LED display lamp 23 of the residual poison detection device, which can provide a signal display, the residual poison detection device can also transmit signals. To the base circuit board 34, and the second LED display lamp 36 connected to the base circuit board 34 to display the light number, during the sensing process, if the detector can not see the LED display lamp 23, you can view the first The two LED display lights 36, that is, the LED lights of the two LED display lights 23 and the second LED display light 36 should be the same.

It can be known from the above that the base 3 has functions of charging, controlling the opening of the residual poison detection device, and receiving signals from the residual poison detection device. Among them, the battery of the residual poison detection device can be charged through the wireless charging method, and wireless communication is performed with the residual poison detection device through the Bluetooth or wifi method.

In addition, the base 3 may only have a wireless charging function, but it does not necessarily have to have a function to control the residual poison detection device. The control part may also be connected to the residual poison detection device through a mobile phone APP to control the operation of the residual poison detection device.

In summary, the handheld residual poison detection device disclosed in the present disclosure detects the change amount of residual poison in the aqueous solution through a light sensing mechanism. When in use, the residual poison detection device can be placed in the aqueous solution to be tested, and it can be absorbed by The test solution is tested by water solution, and the detection result is displayed through the light. The residual poison detection device is not only designed as a whole, but also suitable for general household detection. The device is also waterproof and wireless charging capabilities, which is more practical.

The above-mentioned embodiment merely illustrates the principle and effect of the present disclosure by way of example, and is not intended to limit the present disclosure. Anyone who is familiar with this technique can modify and change the above embodiments without departing from the spirit and scope of this disclosure. Therefore, the scope of protection of the rights in this disclosure should be as listed in the scope of patent application mentioned later.

Claims (16)

A residual poison detection device is used to detect the residual poison of an aqueous solution to be tested. The residual poison detection device includes: a casing formed with an accommodation space; and a water inlet hole formed on the casing and communicated with the accommodation. Space for the aqueous solution to be tested to flow into the containing space through the water inlet hole; a sensing cavity is provided in the containing space for the aqueous solution to be tested to flow in the sensing cavity; The light sensor is arranged beside the sensing cavity to emit a light passing through the sensing cavity; the light sensor is arranged beside the sensing cavity to sense the light passing through the sensing cavity To generate a sensing signal; a water outlet is formed on the housing and communicates with the accommodation space for the aqueous solution to be measured to flow out of the accommodation space through the water outlet; the pump is provided in the accommodation A plurality of pipe fittings are used for connecting the water inlet hole, the pump, the sensing cavity and the water outlet hole to form a flow channel; and a circuit board, Electrically connected to the light sensor for receiving the light sensor Signal. The residual poison detection device according to item 1 of the scope of the patent application, wherein the circuit board calculates the absorption of the residual poison in the aqueous solution to be tested by the sensing signal. The residual poison detection device according to item 1 of the patent application scope, wherein the casing includes an upper cover and a lower cover. The residual poison detection device according to item 3 of the scope of patent application, further comprising an O-ring disposed between the upper cover and the lower cover. The residual poison detection device according to item 3 of the patent application scope, wherein the lower cover includes a side surface, a bottom surface, and an inclined surface located between the side surface and the bottom surface, wherein the water inlet hole and the water outlet hole are provided on the inclined surface. . The residual poison detection device according to item 1 of the scope of the patent application, wherein the circuit board is configured to calculate the content of the aqueous solution to be tested through continuous detection of the aqueous solution to be tested through the light source transmitter and the light sensor. Amount of change in absorption of residual poison. The residual poison detection device described in item 1 of the scope of patent application, further includes a battery to provide power required by the pump, the light source transmitter, the light sensor, and the circuit board. The residual poison detection device described in item 7 of the scope of patent application, further includes a first wireless charging module, which is disposed in the accommodating space to store the power generated by the battery into the battery. The residual poison detection device as described in item 8 of the scope of the patent application, further includes a separator disposed between the battery and the first wireless charging module. The residual poison detection device according to item 1 of the scope of the patent application, wherein the light source transmitter and the light sensor are plural. The residual poison detection device according to item 1 of the scope of the patent application, wherein the light source transmitter and the light sensor are respectively disposed on opposite sides of the sensing cavity. The residual poison detection device described in item 1 of the scope of patent application, further includes an LED display lamp, which is arranged on the circuit board and generates different colors of display according to the absorption. The residual poison detection device according to item 1 of the scope of patent application, further comprising: a first skeleton and a second skeleton for the pump and the sensing cavity to be disposed between the first skeleton and the second skeleton . The residual poison detection device according to item 13 of the patent application scope, wherein the circuit board is disposed on a side of the first skeleton or the second skeleton. The residual poison detection device according to item 1 of the patent application scope further includes: a base for the housing to be connected, and the base includes a second wireless charging module for communicating with the first in the residual poison detection device. The wireless charging module performs wireless charging. The residual poison detection device according to item 15 of the patent application scope, wherein the base includes a button for starting the operation of the residual poison detection device.