Electrochemical detection system and electrochemical reaction device

Abstract

The utility model discloses an electrochemical detection system and electrochemical reaction device. Electrochemical detection system includes: bearing unit, ultrasonic wave generating unit, signal generating unit, timing unit and electrode detection unit, bearing unit is used for bearing ultrasonic wave generating unit, signal generating unit and timing unit, bearing unit still includes stirring cup bearing area, and stirring cup bearing area bears stirring cup, signal generating unit includes high frequency signal output end and first timing signal receiving end, ultrasonic wave generating unit includes high frequency signal receiving end and ultrasonic wave generating signal output end, timing unit includes ultrasonic wave generating signal receiving end and first timing signal output end, ultrasonic wave generating unit drives the high frequency vibration of the solution to be measured in stirring cup according to high frequency signal, and outputs ultrasonic wave generating signal to make timing unit start timing, and electrode detection unit is used for stretching into the solution to be measured in stirring cup to carry out solution to be measured detection. Effectively improve the detection sensitivity of electrode detection unit.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical detection technology, and in particular to an electrochemical detection system and an electrochemical reaction device. Background Technology

[0002] Heavy metals generally refer to metals with a specific gravity greater than 5. Some heavy metals, such as lead and cadmium, are not essential for human life. These heavy metals in food can easily enter the human body through food. Because these heavy metals are difficult to metabolize, their accumulation can lead to chronic poisoning, weakened immune function, and may even induce cancer or damage the central nervous system, causing significant harm to human health. Therefore, both my country and internationally have clear and strict limits on the content of heavy metals (especially cadmium and lead) in various foods.

[0003] Currently, commonly used methods for heavy metal ion detection include atomic emission spectrometry (AES), atomic absorption spectrometry (AAS), and inductively coupled plasma mass spectrometry (ICP-MS). However, these methods are difficult to implement for on-site monitoring due to their complexity, high instrument cost, and inconvenience in portability. Electrochemical methods, on the other hand, have advantages such as high sensitivity, good selectivity, and short response time, and are widely used in analytical fields such as medical testing, environmental monitoring and control, and agricultural pesticide residue detection.

[0004] However, existing electrochemical methods require magnetic stirring of the test solution during the detection process. The violent disturbance during stirring can easily damage the electrodes and seriously affect the detection accuracy. Utility Model Content

[0005] This invention provides an electrochemical detection system and an electrochemical reaction device to improve detection sensitivity and reduce the electrochemical detection limit.

[0006] According to one aspect of the present invention, an electrochemical detection system is provided, comprising: a carrier unit, an ultrasonic wave generating unit, a signal generating unit, a timing unit, and an electrode detection unit; The carrier unit is used to carry the ultrasonic wave generating unit, the signal generating unit, and the timing unit; the carrier unit also includes a stirring cup carrying area, which carries the stirring cup and contains the solution to be tested. The signal generation unit includes a high-frequency signal output terminal and a first timing signal receiving terminal; The ultrasonic generating unit includes a high-frequency signal receiving end and an ultrasonic signal generating output end; The timing unit includes an ultrasonic signal receiving end and a first timing signal output end; the high-frequency signal output end is connected to the high-frequency signal receiving end, the ultrasonic signal output end is connected to the ultrasonic signal receiving end, the first timing signal output end is connected to the first timing signal receiving end, and the signal generating unit generates a high-frequency signal; the ultrasonic signal generating unit drives the test solution in the stirring cup to vibrate at high frequency according to the high-frequency signal and outputs an ultrasonic signal; the timing unit starts timing according to the ultrasonic signal; the electrode detection unit is used to extend into the test solution in the stirring cup to detect the test solution.

[0007] Optionally, the signal generation unit includes a high-frequency signal generation subunit and a signal amplification subunit. The high-frequency signal generation subunit includes a high-frequency signal generation output terminal, and the signal amplification subunit includes a high-frequency signal generation receiving terminal and a high-frequency signal output terminal. The high-frequency signal generation output terminal is electrically connected to the high-frequency signal generation receiving terminal, and the signal amplification subunit amplifies the high-frequency signal and outputs it through the high-frequency signal output terminal.

[0008] Optionally, the electrochemical detection system further includes a sensing unit disposed within the carrying area of ​​the stirring cup. The sensing unit includes a sensing signal output terminal, and the signal generating unit includes a sensing signal receiving terminal. The sensing signal output terminal is connected to the sensing signal receiving terminal.

[0009] Optionally, the electrochemical detection system further includes an alert unit, which includes a second timing signal receiving terminal and a second timing signal output terminal. The second timing signal receiving terminal is connected to the second timing signal output terminal, and the alert unit issues an alert signal when the second timing signal receiving terminal receives the second timing signal.

[0010] Optionally, the electrochemical detection system further includes a movable support structure for driving the electrode detection unit to extend into or out of the stirring cup.

[0011] Optionally, the electrode detection unit includes an electronics supply unit for supplying power to the electrode detection unit.

[0012] Optionally, the electrode detection unit includes a wireless transmission subunit, which is used to transmit the detection signal of the solution to be tested.

[0013] Optionally, the ultrasonic generating unit is positioned in contact with the bottom of the stirring cup.

[0014] Optionally, the ultrasonic generating unit includes a piezoelectric ceramic transducer or a quartz crystal transducer.

[0015] Secondly, the present invention provides an electrochemical reaction device, including the electrochemical detection system described in any one of the first aspects.

[0016] The technical solution of this utility model embodiment provides an electrochemical detection system comprising: a support unit, an ultrasonic generating unit, a signal generating unit, a timing unit, and an electrode detection unit; the support unit carries the ultrasonic generating unit, the signal generating unit, and the timing unit; the support unit also includes a stirring cup carrying area, which carries the stirring cup; the signal generating unit includes a high-frequency signal output terminal and a first timing signal receiving terminal; the ultrasonic generating unit includes a high-frequency signal receiving terminal and an ultrasonic generating signal output terminal; the timing unit includes an ultrasonic generating signal receiving terminal and a first timing signal output terminal; the high-frequency signal output terminal is connected to the high-frequency signal receiving terminal, the ultrasonic generating signal output terminal is connected to the ultrasonic generating signal receiving terminal, and the first timing signal output terminal is connected to the first timing signal receiving terminal; the signal generating unit generates a high-frequency signal; the ultrasonic generating unit drives the test solution in the stirring cup to vibrate at high frequency according to the high-frequency signal and outputs an ultrasonic generating signal; the timing unit starts timing according to the ultrasonic generating signal; the electrode detection unit is used to extend into the test solution in the stirring cup to detect the test solution. A high-frequency signal is generated by the signal generation unit, and the ultrasonic generation unit resonates based on the high-frequency signal, causing the solution to vibrate at high frequency. The timing unit starts timing based on the ultrasonic signal to avoid the vibration time being too long and affecting the temperature of the solution, thus ensuring the detection sensitivity of the electrode detection unit and the detection effect.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an electrochemical detection system provided by this utility model; Figure 2 This is a schematic diagram of another electrochemical detection system provided by this utility model; Figure 3 This is a schematic diagram of another electrochemical detection system provided by this utility model. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] Figure 1 This is a schematic diagram of the structure of an electrochemical detection system provided by this utility model. Figure 2 Here is a schematic diagram of another electrochemical detection system provided by this utility model, as shown below. Figure 1 and Figure 2As shown, the electrochemical detection system includes: a carrier unit 101, an ultrasonic generating unit 102, a signal generating unit 103, a timing unit 104, and an electrode detection unit 105; the carrier unit 101 is used to carry the ultrasonic generating unit 102, the signal generating unit 103, and the timing unit 104; the carrier unit 101 also includes a stirring cup carrying area 10, which carries a stirring cup 11, and the stirring cup 104 contains the solution to be tested; the signal generating unit 103 includes a high-frequency signal output terminal 31 and a first timing signal receiving terminal 32; the ultrasonic generating unit 102 includes a high-frequency signal receiving terminal 33 and an ultrasonic generating signal output terminal 34; the timing unit 105... 04 includes an ultrasonic signal receiving terminal 35 and a first timing signal output terminal 36; a high-frequency signal output terminal 31 is connected to a high-frequency signal receiving terminal 33, an ultrasonic signal output terminal 34 is connected to an ultrasonic signal receiving terminal 35, a first timing signal output terminal 36 is connected to a first timing signal receiving terminal 32, and a signal generation unit 103 generates a high-frequency signal; an ultrasonic signal generating unit 102 drives the solution to be tested in the stirring cup 11 to vibrate at high frequency according to the high-frequency signal and outputs an ultrasonic signal; a timing unit 104 starts timing according to the ultrasonic signal; and an electrode detection unit 105 is used to extend into the solution to be tested in the stirring cup 11 to detect the solution to be tested.

[0023] The support unit 101 can be a support platform, which can support the ultrasonic generating unit 102, the signal generating unit 103, and the timing unit 104. For example, the support unit 101 is cylindrical in shape and includes a stirring cup support area 10. The ultrasonic generating unit 102 can be located near the bottom of the stirring cup support area 10 so that it can vibrate the liquid to be tested in the stirring cup 11. The signal generating unit 103 and the timing unit 104 can be disposed on the side wall of the support unit 101. The installation positions of the ultrasonic generating unit 102, the signal generating unit 103, and the timing unit 104 can be selected according to actual design requirements; this embodiment of the invention does not impose specific limitations. The signal generating unit 103 is connected to the ultrasonic generating unit 102 and the timing unit 104 respectively. The high-frequency signal output terminal 31 of the signal generating unit 103 outputs a high-frequency signal, and the high-frequency signal receiving terminal 33 of the ultrasonic generating unit 102 receives the high-frequency signal. Based on the high-frequency signal, the ultrasonic generating unit 102 can convert electrical energy into mechanical vibration, which can then be transmitted to the liquid to be tested, causing the liquid to vibrate at high frequency, thereby achieving the uniformity of the liquid and ensuring the sensitivity of subsequent detection, and reducing the detection limit. Optionally, the vibration frequency of the ultrasonic generating unit 102 can be in the range of 20KHz to 100KHz to ensure the uniformity of the distribution of the solution to be tested. The vibration frequency can be selected according to the actual application effect, and this embodiment of the present invention does not impose a specific limitation. When the ultrasonic generating unit 102 receives a high-frequency signal and generates mechanical vibration, it can output an ultrasonic signal to the ultrasonic signal receiving terminal 35 of the timing unit 104 via the ultrasonic signal output terminal 34. The timing unit 104 starts working according to the ultrasonic signal and records the working time of the ultrasonic generating unit 102. The timing unit 104 includes a first timing signal output terminal 36, and the signal generating unit 103 includes a first timing signal receiving terminal 32. The first timing signal output terminal 36 is connected to the first timing signal receiving terminal 32. The timing unit 104 outputs a timing signal to the signal generating unit 103. The signal generating unit 103 can stop generating a high-frequency signal according to the timing signal, thereby stopping the ultrasonic generating unit 102 from driving the liquid under test to vibrate at high frequency, avoiding the temperature of the liquid under test from rising due to the excessive working time of the ultrasonic generating unit 102, which would affect the electrochemical detection effect. The electrode detection unit 105 includes a screen-printed electrode and a working electrode. The electrode detection unit 105 can extend into the solution to be tested in the stirring cup 11, so that its working electrode contacts the solution to be tested in the stirring cup 11, thereby realizing the detection of the solution to be tested. During the detection process, a chemical signal is generated and converted into an electrical signal by the electrode detection unit 105, so that the solution to be tested can be analyzed and processed according to the electrical signal to realize the detection.

[0024] This embodiment of the invention includes a carrier unit, an ultrasonic generating unit, a signal generating unit, a timing unit, and an electrode detection unit in an electrochemical detection system. The signal generating unit generates a high-frequency signal, and the ultrasonic generating unit uses this high-frequency signal to drive the test solution in the stirring cup to vibrate at a high frequency. The electrode detection unit is inserted into the test solution in the stirring cup to perform test solution detection. The high-frequency signal generated by the signal generating unit resonates with the ultrasonic generating unit, causing the test solution to vibrate at a high frequency. The timing unit starts timing based on the ultrasonic signal, preventing excessively long vibration times from affecting the temperature of the test solution, ensuring the detection sensitivity of the electrode detection unit, and guaranteeing the detection effect.

[0025] Furthermore, Figure 3 Here is a schematic diagram of another electrochemical detection system provided by this utility model, as shown below. Figure 3 As shown, the signal generation unit 103 includes a high-frequency signal generation subunit 1031 and a signal amplification subunit 1032. The high-frequency signal generation subunit 1031 includes a high-frequency signal generation output terminal 37, and the signal amplification subunit 1032 includes a high-frequency signal generation receiving terminal 38 and a high-frequency signal output terminal 31. The high-frequency signal generation output terminal 37 is electrically connected to the high-frequency signal generation receiving terminal 38. The signal amplification subunit 1032 amplifies the high-frequency signal and outputs it through the high-frequency signal output terminal 31.

[0026] The signal generation unit 103 includes a high-frequency signal generation subunit 1031 and a signal amplification subunit 1032. The high-frequency signal generation output terminal 37 of the high-frequency signal generation subunit 1031 is connected to the high-frequency signal generation receiving terminal 38 of the signal amplification subunit 1032. The high-frequency sub-signal output by the high-frequency signal generation subunit 1031 is sent to the signal amplification subunit 1032. The signal amplification subunit 1032 receives the high-frequency sub-signal and amplifies its power. The high-frequency signal is then output through the high-frequency signal output terminal 31 of the signal amplification subunit 1032. The signal amplification subunit 1032 may include a signal amplification circuit to ensure maximum energy transmission, ensure that the ultrasonic generation unit 102 can resonate according to the high-frequency signal, ensure the high-frequency vibration effect of the liquid under test, and thus improve the sensitivity of electrochemical detection.

[0027] Optional, continue to refer to Figure 1 and Figure 3 As shown, the electrochemical detection system also includes a sensing unit 106, which is disposed in the stirring cup bearing area 10. The sensing unit 106 includes a sensing signal output terminal 39, and the signal generation unit 103 includes a sensing signal receiving terminal 40. The sensing signal output terminal 39 is connected to the sensing signal receiving terminal 40.

[0028] The electrochemical detection system also includes a sensing unit 106, which is disposed within the stirring cup support area 10. The sensing unit 106 can sense the placement state of the stirring cup 11. When the stirring cup 11 containing the solution to be tested is placed within the stirring cup support area 10, the sensing signal output terminal 39 of the sensing unit 106 is connected to the sensing signal receiving terminal 40 of the signal generation unit 103. The sensing unit 106 generates a sensing signal and outputs it to the sensing signal receiving terminal 40 of the signal generation unit 103 via the sensing signal output terminal 39. The signal generation unit 103 starts generating a high-frequency signal based on the sensing signal, ensuring the accurate start-up of the signal generation unit 103.

[0029] Optional, continue to refer to Figure 1 and Figure 3 As shown, the electrochemical detection system also includes an alert unit 107, which includes a second timing signal receiving terminal 41; the timing unit 104 includes a second timing signal output terminal 42; the second timing signal receiving terminal 41 is connected to the second timing signal output terminal 42, and the alert unit 107 issues an alert signal when the second timing signal receiving terminal 41 receives the second timing signal.

[0030] The electrochemical detection system also includes an alert unit 107. The second timing signal receiving terminal 41 of the alert unit 107 is connected to the second timing signal output terminal 42 of the timing unit 104. The timing signal output by the timing unit 104 can also be synchronously generated by the alert unit 107. The alert unit 107 starts working according to the received timing signal and outputs an alert signal to attract the attention of the staff and ensure the safety of the detection process.

[0031] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, the electrochemical detection system also includes a movable support structure (not shown in the figure), which is used to drive the electrode detection unit 105 to extend into or out of the stirring cup 11.

[0032] The electrochemical detection system also includes a movable support structure, which can be a robotic arm that can move the electrode detection unit 105. At the start of the detection, the movable support structure is used to move the electrode detection unit 105 into the stirring cup 11 to contact the solution to be tested. After the detection is completed, the movable support structure is used to move the electrode detection unit 105 out of the stirring cup 11 to stop the detection.

[0033] Optional, continue to refer to Figure 1 and Figure 3As shown, the electrode detection unit 105 includes an electronics supply unit 108, which is used to power the electrode detection unit 105. By providing the electronics supply unit 108 in the electrode detection unit 105, the electronics supply unit 108 can be a lithium battery, so that the electrode detection unit 105 can work normally, thereby realizing signal conversion and transmission.

[0034] Optional, continue to refer to Figure 1 and Figure 3 As shown, the electrode detection unit 105 includes a wireless transmission subunit 109, which is used to transmit the detection signal of the test solution. By setting the wireless transmission subunit 109 in the electrode detection unit 105, the wireless transmission subunit 109 can wirelessly transmit the detection signal of the test solution collected by the electrode detection unit 105, which facilitates the analysis and processing of the detection signal. The electrochemical detection system can also be equipped with a display unit, which is connected to the electrochemical detection unit, so that the detection signal can be displayed on the display unit for easy and intuitive viewing of the detection results.

[0035] Optional, continue to refer to Figure 2 The ultrasonic generating unit 102 is positioned in contact with the bottom of the stirring cup 11. The ultrasonic generating unit 102 can directly contact the stirring cup 11 so that the mechanical vibration generated by the ultrasonic generating unit 102 can be directly transmitted to the liquid to be tested, ensuring the high-frequency vibration effect of the liquid to be tested.

[0036] Optionally, the ultrasonic generating unit 102 includes a piezoelectric ceramic transducer or a quartz crystal transducer. The ultrasonic generating unit 102 can be a piezoelectric ceramic transducer, where the ceramic lattice deforms due to the piezoelectric effect, generating mechanical vibrations to achieve ultrasonic wave emission. The ultrasonic generating unit 102 can also be a quartz crystal transducer, where the quartz crystal deforms in a specific direction due to the piezoelectric effect, generating high-frequency vibrations to achieve ultrasonic wave emission. The type of ultrasonic generating unit 102 can be selected according to actual design requirements, and this embodiment of the invention does not impose specific limitations.

[0037] Based on the same inventive concept, this utility model embodiment also provides an electrochemical reaction device. The electrochemical reaction device is used to execute the electrochemical detection system provided in any embodiment of this utility model. Therefore, the electrochemical reaction device provided in this utility model embodiment includes the technical features of the electrochemical detection system provided in any embodiment of this utility model, and can achieve the beneficial effects of the electrochemical detection system provided in any embodiment of this utility model. The similarities can be referred to the above description of the electrochemical detection system provided in this utility model embodiment, and will not be repeated here.

[0038] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An electrochemical detection system, characterized in that, include: The unit comprises a load-bearing unit, an ultrasonic wave generating unit, a signal generating unit, a timing unit, and an electrode detection unit. The carrier unit is used to carry the ultrasonic wave generating unit, the signal generating unit, and the timing unit; the carrier unit also includes a stirring cup carrying area, which carries the stirring cup and contains the solution to be tested. The signal generation unit includes a high-frequency signal output terminal and a first timing signal receiving terminal; The ultrasonic generating unit includes a high-frequency signal receiving end and an ultrasonic signal generating output end; The timing unit includes an ultrasonic signal receiving end and a first timing signal output end; the high-frequency signal output end is connected to the high-frequency signal receiving end, the ultrasonic signal output end is connected to the ultrasonic signal receiving end, the first timing signal output end is connected to the first timing signal receiving end, and the signal generating unit generates a high-frequency signal; the ultrasonic signal generating unit drives the test solution in the stirring cup to vibrate at high frequency according to the high-frequency signal and outputs an ultrasonic signal; the timing unit starts timing according to the ultrasonic signal; the electrode detection unit is used to extend into the test solution in the stirring cup to detect the test solution.

2. The electrochemical detection system according to claim 1, characterized in that, The signal generation unit includes a high-frequency signal generation subunit and a signal amplification subunit. The high-frequency signal generation subunit includes a high-frequency signal generation output terminal, and the signal amplification subunit includes a high-frequency signal generation receiving terminal and a high-frequency signal output terminal. The high-frequency signal generation output terminal is electrically connected to the high-frequency signal generation receiving terminal, and the signal amplification subunit amplifies the high-frequency signal and outputs it through the high-frequency signal output terminal.

3. The electrochemical detection system according to claim 1, characterized in that, The electrochemical detection system further includes a sensing unit disposed within the carrying area of ​​the stirring cup. The sensing unit includes a sensing signal output terminal, and the signal generating unit includes a sensing signal receiving terminal. The sensing signal output terminal is connected to the sensing signal receiving terminal.

4. The electrochemical detection system according to claim 1, characterized in that, The electrochemical detection system further includes an alert unit, which includes a second timing signal receiving terminal and a second timing signal output terminal. The second timing signal receiving terminal is connected to the second timing signal output terminal, and the alert unit issues an alert signal when the second timing signal receiving terminal receives the second timing signal.

5. The electrochemical detection system according to claim 1, characterized in that, The electrochemical detection system also includes a movable support structure, which is used to drive the electrode detection unit to extend into or out of the stirring cup.

6. The electrochemical detection system according to claim 1, characterized in that, The electrode detection unit includes an electron supply unit, which is used to supply power to the electrode detection unit.

7. The electrochemical detection system according to claim 1, characterized in that, The electrode detection unit includes a wireless transmission subunit, which is used to transmit the detection signal of the solution to be tested.

8. The electrochemical detection system according to claim 1, characterized in that, The ultrasonic generating unit is positioned in contact with the bottom of the stirring cup.

9. The electrochemical detection system according to claim 1, characterized in that, The ultrasonic generating unit includes a piezoelectric ceramic transducer or a quartz crystal transducer.

10. An electrochemical reaction apparatus, characterized in that, The electrochemical detection system includes any one of claims 1-9.

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