Testing Fixture and Testing Method for Electrochemical Sensor CODE

Abstract

The present invention discloses a detection fixture and a detection method for the CODE code of an electrochemical sensor. Among them, the detection fixture includes a connector module, a single-chip microcomputer control module, and a resistance measurement module. The connector module is electrically connected to the single-chip microcomputer control module. The connector module is used for plugging in the electrochemical sensor to be tested. By turning on the electrical path of the electrochemical sensor to be tested, it automatically triggers the single-chip microcomputer control module to start working. The single-chip microcomputer control module is provided with a CODE detection algorithm corresponding to the logic circuit of the electrochemical sensor to be tested, which is used to obtain the electrical signal on the logic circuit of the electrochemical sensor and convert the obtained electrical signal into a CODE code value through the CODE code detection algorithm. The resistance measurement module is connected to the logic circuit of the electrochemical sensor to be tested and is used to measure the resistance value of the logic circuit of the electrochemical sensor to be tested. The present invention realizes the simultaneous detection of the accuracy rate of the CODE code of the electrochemical sensor and the resistance value of its electrode structure, and improves the detection efficiency.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of electrochemical sensors, and in particular, to a detection fixture and a detection method for the CODE code of an electrochemical sensor. Background Art

[0002] In recent years, due to the characteristics of low cost, easy manufacturing, and easy portability of enzyme electrode biosensors, they have been increasingly widely used in the detection of various biochemical indicators. Detecting biochemical indicators through portable biosensors not only requires less specimen volume, is simple and fast, but also is suitable for point-of-care testing. Currently, the manufacturing method for mass production of electrochemical biosensors results in a large batch-to-batch difference between each batch of sensors. The main reasons for this batch-to-batch difference are the differences in manufacturing processes, such as: human operation reasons, machine operation differences, raw material differences, process instability, and process environment instability. These differences and instabilities will all cause batch-to-batch differences in electrochemical biosensors, inconsistent performance, and inaccurate measurement results. The calibration code is to perform a certain degree of uniform adjustment on the performance of the electrochemical sensor to make it more accurate. Therefore, in order to eliminate the influence of batch-to-batch differences and ensure the accuracy of test results, many manufacturers of electrochemical sensors use the CODE code (also known as the calibration code) for specific parameter calibration.

[0003] Currently, the CODE codes of blood glucose meters on the market mainly include: embedded calibration code type (password card). First, the information affecting the test accuracy of the blood glucose test strip is stored in the coding card. Before use, the coding card is inserted into the detection device, and the instrument makes corresponding corrections to the final test result by reading the information in the coding card. This type of instrument belongs to an external password card, that is, when using test strips of different batches each time, the external password card needs to be manually replaced, and the operation is relatively complex. External calibration strip type. Each bottle of test strips is equipped with a calibration strip. Before use, the calibration strip should be inserted into the blood glucose meter first. After the blood glucose meter displays the number of its calibration strip and corresponds to the test strip, the calibration strip can be removed before testing, and the process is also relatively cumbersome. Built-in calibration code type. The built-in program of this type of instrument has edited several sets of calibration codes. When using it, it is necessary to turn on the machine and set its calibration code to the calibration code corresponding to the test strip used (i.e., the CODE code corresponding) before accurate testing can be carried out, which also increases the usage steps. Summary of the Invention

[0004] Aiming at the above existing technical problems, the present invention provides a detection fixture and a detection method for the CODE code of an electrochemical sensor to simplify the detection process of the accuracy rate of the CODE code of the electrochemical sensor and improve the detection efficiency.

[0005] In a first aspect, the present invention provides a detection fixture for the CODE code of an electrochemical sensor, including a power switch, a housing, a printed circuit board, and further including: a connector module, a single-chip microcomputer control module;

[0006] The connector module is electrically connected to the single-chip microcomputer control module, and both are arranged on a printed circuit board; the connector module is used for plugging in the electrochemical sensor to be tested, and by turning on the electrical path of the electrochemical sensor to be tested, the single-chip microcomputer control module is automatically triggered to start working;

[0007] The single-chip microcomputer control module is provided with a CODE detection algorithm corresponding to the logic circuit of the electrochemical sensor to be tested, which is used to obtain the electrical signal on the logic circuit of the electrochemical sensor, and convert the obtained electrical signal into a CODE code value through the CODE code detection algorithm;

[0008] Optionally, it further includes a resistance measurement module; the resistance measurement module is connected to the logic circuit of the electrochemical sensor to be tested and is used to measure the resistance value of the logic circuit of the electrochemical sensor to be tested.

[0009] Optionally, the single-chip microcomputer control module is further provided with a high and low level interface, and the connector module is provided with contact pins;

[0010] The single-chip microcomputer control module is connected to the contact pins of the connector module through the high and low level interface, and the electrical path of the electrochemical sensor is turned on through the contact pins, and the single-chip microcomputer control module is automatically triggered to start working.

[0011] Optionally, the contact pins of the connector module include a first group of contact pins and a second group of contact pins. The first group of contact pins is arranged opposite to the electrode position of the electrochemical sensor, and the second group of contact pins is arranged opposite to the logic circuit position of the electrochemical sensor.

[0012] Optionally, the number of the first group of contact pins is the same as the number of electrodes of the electrochemical sensor, and the number of the second group of contact pins ranges from 2 to 10.

[0013] Optionally, the single-chip microcomputer control module is integrally integrated with the printed circuit board or connected through a detachable plug-in connection, and the connector module is integrally integrated with the printed circuit board or connected through a detachable plug-in connection.

[0014] Optionally, the connection mode between the resistance measurement module and the logic circuit is controlled by a coding contact, and the control mode of the coding contact is a manual switch or an automatic low-resistance analog switch.

[0015] Optionally, the coding contact is set to be single-group or two-group.

[0016] Optionally, it further includes a display device arranged on the housing;

[0017] The display device includes a first display and a second display. The first display is one of a digital tube, a light-emitting diode (LED), an organic light-emitting device (OLED), or a liquid crystal display (LCD), and is used to display the CODE value of the electrochemical sensor.

[0018] The second display is one of a pointer dial, a digital tube, an LED, an OLED, or an LCD, and is used to display the resistance value of the logic circuit of the electrochemical sensor.

[0019] Optionally, two or more of the detection jigs are connected in parallel in the same isolated power supply circuit to form a detection jig group that works simultaneously.

[0020] Second, the present invention also provides a method for detecting the CODE value of an electrochemical sensor, using the detection jig for the CODE value of the electrochemical sensor described in the above embodiment, including:

[0021] S1. Insert the electrochemical sensor to be tested into the connector module, turn on the electrical path of the electrochemical sensor to be tested, and automatically trigger the single-chip microcomputer control module to start working.

[0022] S2. Obtain the electrical signal on the logic circuit of the electrochemical sensor through the single-chip microcomputer control module, and convert the obtained electrical signal into a CODE value through the CODE value detection algorithm built in the single-chip microcomputer control module.

[0023] S3. Measure the resistance value of the logic circuit of the electrochemical sensor to be tested through the resistance measurement module connected to the logic circuit of the electrochemical sensor to be tested.

[0024] Advantages of the present invention:

[0025] The detection jig of the present invention is provided with a connector module, a single-chip microcomputer control module, and a resistance measurement module. After the detection jig is powered on and the electrochemical sensor to be tested is inserted, the CODE value of the electrochemical sensor and the resistance value of the logic circuit can be detected, so as to determine whether the automatic code adjustment function of the electrochemical sensor is normal. The operation is simple, which can ensure the qualified rate of products, effectively reduce the risk of a large number of waste products caused by unqualified sampling inspection after the finished products are made, and avoid the increase in production costs. At the same time, the detection jigs of the present invention can be made into a parallel detection jig group, which can significantly improve the detection efficiency and save time. Description of the Drawings

[0026] Figure 1 is a schematic diagram of the external structure of the detection jig for the CODE value of the electrochemical sensor;

[0027] Figure 2It is a schematic structural diagram of a connector module part of a detection fixture for the CODE code of an electrochemical sensor;

[0028] Figure 3 It is a schematic flow diagram of the detection fixture for the CODE code of an electrochemical sensor with a manual switch as the coding contact control method;

[0029] Figure 4 It is a schematic flow diagram of the detection fixture for the CODE code of an electrochemical sensor with an automatic low-resistance switch as the coding contact control method;

[0030] Figure 5 It is a schematic flow diagram of the detection method for the CODE code of an electrochemical sensor;

[0031] Reference numerals: 100, connector module; 101, first group of contact pins; 102, second group of contact pins; 200, single-chip microcomputer control module; 300, electrochemical sensor to be tested; 401, first display; 402, second display; 500, manual switch; 600, power switch; 700, housing. Detailed implementation manners

[0032] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that, for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures. Embodiment

[0033] See Figure 1-2 , the detection fixture for the CODE code of the electrochemical sensor provided by the embodiment of the present invention includes: a connector module 100, a single-chip microcomputer control module 200, a resistance measurement module (not shown in the figure), a display device, a printed circuit board (not shown in the figure), a power switch 600, and a housing 700.

[0034] Among them, the connector module 100 is electrically connected to the single-chip microcomputer control module 200, and both are disposed on the printed circuit board. The connector module 100 is used for plugging in the electrochemical sensor 300 to be tested. By turning on the electrical path of the electrochemical sensor 300 to be tested, the single-chip microcomputer control module 200 is automatically triggered to start working.

[0035] The single-chip microcomputer control module 200 is provided with a CODE detection algorithm corresponding to the logic circuit of the electrochemical sensor 300 to be tested, and is used for obtaining the electrical signal on the logic path of the electrochemical sensor, and converting the obtained electrical signal into a CODE code value through the CODE code detection algorithm.

[0036] The resistance measurement module is connected to the logic circuit of the electrochemical sensor 300 to be measured, and is used to measure the resistance value of the logic circuit of the electrochemical sensor 300 to be measured.

[0037] Specifically, in some embodiments, the connection mode between the single-chip microcomputer control module 200 and the printed circuit board is integrated, and the connection mode between the connector module 100 and the printed circuit board is also integrated; in some embodiments, the connection mode between the single-chip microcomputer control module 200 and the printed circuit board is detachable plug-in, and the connection mode between the connector module 100 and the printed circuit board is also detachable plug-in; in some embodiments, the connection mode between the single-chip microcomputer control module 200 and the printed circuit board is integrated, and the connection mode between the connector module 100 and the printed circuit board is detachable plug-in; in some embodiments, the connection mode between the single-chip microcomputer control module 200 and the printed circuit board is detachable plug-in, and the connection mode between the connector module 100 and the printed circuit board is integrated. The integrated method is beneficial to saving space and the manufacturing process is relatively simple; the detachable plug-in method is convenient for the assembly of the connector module 100 and the single-chip microcomputer control module 200, as well as the maintenance and replacement after damage, reducing the economic loss caused by the damage of the detection fixture.

[0038] Further, the single-chip microcomputer control module 200 is also internally provided with a high and low level interface, and the connector module 100 is provided with contact pins; the single-chip microcomputer control module 200 is connected to the contact pins of the connector module 100 through the high and low level interface, and the electrical path of the electrochemical sensor is connected through the contact pins, automatically triggering the single-chip microcomputer control module 200 to start working.

[0039] Optionally, the above contact pins include a first group of contact pins 101 and a second group of contact pins 102. According to the actual situation of the electrodes and logic circuit of the electrochemical sensor 300 to be measured, the first group of contact pins 101 corresponds to the electrode positions of the electrochemical sensor 300 to be measured, and the number of the first group of contact pins 101 is the same as the number of electrodes of the electrochemical sensor 300 to be measured. The specific number set in this embodiment is 4; the second group of contact pins 102 corresponds to the logic circuit positions of the electrochemical sensor 300 to be measured, and the number range of the second group of contact pins 102 is 2-10. The specific number set in this embodiment is 4.

[0040] Further, the single-chip microcomputer control module 200 is also internally provided with a display device driving interface. After the electrochemical sensor 300 to be measured is inserted into the connector module 100, the electrical path of the electrochemical sensor 300 is connected through the first set of contact pins 101, which can trigger the single-chip microcomputer control module 200 to start working. The single-chip microcomputer control module 200 is connected to the second set of contact pins 102 of the connector module 100 through the high and low level interfaces, forming a complete signal transmission system for detecting the CODE value of the electrochemical sensor 300 and driving the display device to display the CODE value through the display device driving interface.

[0041] Specifically, the connection mode between the above-mentioned resistance measurement module and the logic circuit is controlled by a code adjustment contact, and the control mode of the code adjustment contact is a manual switch or an automatic low-resistance analog switch.

[0042] For further reference Figure 1 、 Figure 3 The code adjustment contacts are divided into two groups, each group has the same number, and the number of each group is 3. The control mode is a manual switch 500. According to the detected CODE value, the connection lines of the two groups of code adjustment contacts are respectively controlled through the manual switch 500 to achieve the connection mode between the resistance measurement module corresponding to the target CODE value and the logic circuit, measure the resistance value of the logic circuit of the electrochemical sensor 300, and the display device displays the specific resistance value.

[0043] In some embodiments, as Figure 4 shown, the control mode of the code adjustment contact is an automatic low-resistance analog switch. The single-chip microcomputer control module 200 automatically controls the connection lines of the two groups of code adjustment contacts according to the detected CODE value to achieve the connection mode between the resistance measurement module corresponding to the target CODE value and the logic circuit, measure the resistance value of the logic circuit of the electrochemical sensor 300, and the display device displays the specific resistance value.

[0044] Optionally, the display device in this embodiment may include two displays, which are respectively used to display the CODE value and the resistance value. Among them, the display for displaying the CODE value can be any one of a digital tube, an LED, an OLED or an LCD, and the display for displaying the resistance value can be any one of a pointer dial, a digital tube, an LED, an OLED or an LCD.

[0045] For specific reference Figure 1 As shown, the display device includes a first display 401 and a second display 402. The first display 401 is used to display the CODE value of the electrochemical sensor 300, and the second display 402 is used to display the resistance value of the logic circuit of the electrochemical sensor 300. Exemplarily, the first display 401 is a digital tube, and the second display 402 is an LED.

[0046] Based on the above examples, two or more detection jigs can also be connected in parallel in the same isolated power supply circuit to form a detection jig group and operate simultaneously, which can significantly improve the detection efficiency. Exemplarily, 10 detection jigs of the present invention can be set as a detection jig group to perform the CODE code detection of the electrochemical sensor.

[0047] Furthermore, the present invention also provides a method for detecting the CODE code of an electrochemical sensor, which uses the detection jig for the CODE code of the electrochemical sensor described in the above embodiments, including:

[0048] S1. Insert the electrochemical sensor to be tested into the connector module, turn on the electrical path of the electrochemical sensor to be tested, and automatically trigger the microcontroller control module to start working.

[0049] Among them, the connector module is used for the insertion recognition of the electrochemical sensor to be tested. For example, insert the blood glucose test strip into the connector module, and the electrodes of the blood glucose test strip contact the contact pins of the connector module to form an electrical path, automatically triggering the microcontroller control module to start working.

[0050] The CODE code detection algorithm is programmed in the microcontroller control module. The microcontroller control module is connected to the connector module through a high and low level interface, and the microcontroller control module is also provided with a display device driving interface for connecting the display device.

[0051] S2. Obtain the electrical signal on the logic circuit of the electrochemical sensor through the microcontroller control module, and convert the obtained electrical signal into a CODE code value through the CODE code detection algorithm built in the microcontroller control module.

[0052] Among them, the above CODE code detection algorithm is programmed according to the logic circuit designed for the CODE code on the electrochemical sensor to be tested.

[0053] Exemplarily, the logic circuit in the embodiment of the present invention is printed at specific positions on the back of the blood glucose test strip using conductive paste. The CODE code detection algorithm includes all the coding parameters of the qualified products of the blood glucose test strip and the information corresponding to the logic circuit matching. It can decompile the accurate CODE code value according to the logic circuit information of the qualified blood glucose test strip to be tested. If there is a problem with the logic circuit of the blood glucose test strip to be tested, the CODE code value cannot be decompiled.

[0054] The single-chip microcomputer control module is connected to the connector module through the high and low level interface to obtain the electrical signal on the logic circuit of the electrochemical sensor; after the single-chip microcomputer control module starts working, it alternately applies high and low levels to turn on the logic circuit of the blood glucose test strip and obtains the electrical signal of the logic circuit. The single-chip microcomputer control module converts the obtained electrical signal into a CODE code value through the CODE code detection algorithm, and the CODE code value is displayed on the display device.

[0055] S3. Measure the resistance value of the logic circuit of the electrochemical sensor to be measured through a resistance measurement module connected to the logic circuit of the electrochemical sensor to be measured.

[0056] Further, in this embodiment, the code adjustment contact is controlled according to the CODE code value to connect the logic circuit and the resistance measurement module, so as to measure the resistance value of the logic circuit of the electrochemical sensor.

[0057] For the technical solution provided by the embodiment of the present invention, after the detection fixture is powered on, only by inserting the electrochemical sensor to be measured into the connector module, the CODE code value of the electrochemical sensor and the resistance value of the logic circuit can be detected, so as to realize the simultaneous detection of the accuracy rate of the CODE code of the electrochemical sensor and the resistance value of its corresponding special electrode structure, with simple operation and high test efficiency.

[0058] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A detection fixture for the CODE of an electrochemical sensor, comprising a power switch, a housing, and a printed circuit board, characterized in that, It further includes: a connector module, a single-chip microcomputer control module, and a resistance measurement module; The connector module is electrically connected to the single-chip microcomputer control module, and both are arranged on a printed circuit board; the connector module is used for plugging in the electrochemical sensor to be measured, and by turning on the electrical path of the electrochemical sensor to be measured, the single-chip microcomputer control module is automatically triggered to start working; The single-chip microcomputer control module is provided with a CODE code detection algorithm corresponding to the logic circuit of the electrochemical sensor to be measured, which is used to obtain the electrical signal on the logic circuit of the electrochemical sensor, and convert the obtained electrical signal into a CODE code value through the CODE code detection algorithm; The resistance measurement module is connected to the logic circuit of the electrochemical sensor to be measured, determines the connection mode between the resistance measurement module and the logic circuit according to the detected CODE code value, and is used to measure the resistance value of the logic circuit of the electrochemical sensor to be measured.

2. The detection jig according to claim 1, wherein The single-chip microcomputer control module is further provided with a high and low level interface, and the connector module is provided with contact pins; The single-chip microcomputer control module connects to the contact pins of the connector module through the high and low level interface, and turns on the electrical path of the electrochemical sensor through the contact pins, automatically triggering the single-chip microcomputer control module to start working.

3. The detection jig according to claim 2, characterized in that, The contact pins of the connector module include a first group of contact pins and a second group of contact pins. The first group of contact pins is arranged opposite to the electrode position of the electrochemical sensor, and the second group of contact pins is arranged opposite to the logic circuit position of the electrochemical sensor; The number of the first group of contact pins is the same as the number of electrodes of the electrochemical sensor, and the number of the second group of contact pins is 2 to 10.

4. The detection jig according to claim 1, wherein The single-chip microcomputer control module is integrally integrated with the printed circuit board or connected through detachable plugging, and the connector module is integrally integrated with the printed circuit board or connected through detachable plugging.

5. The detection jig according to claim 1, wherein The connection mode between the resistance measurement module and the logic circuit is controlled by a coding contact, and the control mode of the coding contact is a manual switch or an automatic low-resistance analog switch; the coding contact is set to be single-group or two-group.

6. The detection fixture according to claim 1, wherein It further includes a display device arranged on the housing; The display device includes a first display and a second display. The first display is one of a digital tube, a light-emitting diode LED, an organic light-emitting device OLED, or a liquid crystal display LCD, and is used to display the CODE code value of the electrochemical sensor; The second display is one of a pointer dial, a digital tube, an LED, an OLED, or an LCD, and is used to display the resistance value of the logic circuit of the electrochemical sensor.

7. The detection jig according to any one of claims 1 to 6, characterized in that, Two or more of the detection jigs are connected in parallel in the same isolated power supply circuit to form a detection jig group that works simultaneously.

8. A method for detecting the CODE code of an electrochemical sensor, using the detection fixture for the CODE code of the electrochemical sensor described in claims 1-7, characterized in that, It includes: S1. Insert the electrochemical sensor to be measured into the connector module, turn on the electrical path of the electrochemical sensor to be measured, and automatically trigger the single-chip microcomputer control module to start working; S2. Obtain the electrical signal on the logic circuit of the electrochemical sensor through the single-chip microcomputer control module, and convert the obtained electrical signal into a CODE value through the CODE code detection algorithm built in the single-chip microcomputer control module.

9. The detection method according to claim 8, wherein It further includes: S3. Measure the resistance value of the logic circuit of the electrochemical sensor to be measured through a resistance measurement module connected to the logic circuit of the electrochemical sensor to be measured.

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