A universal PCB board for electronic test strips and electronic sockets of blood glucose meters

Abstract

The present invention provides a universal PCB board for an electronic test strip and an electronic socket of a blood glucose meter, belongs to the technical field of blood glucose detection, and solves the problem that the prior art PCB board is not universal and leads to high costs. The device comprises a test strip socket, an HCT channel sampling resistor, and a trigger current short-circuit switch. The test strip socket is provided with a first pin, a second pin, a third pin, and a fourth pin, respectively. The fourth pin serves as a trigger signal input terminal. One of the second pin or the third pin is in an idle state, and the other serves as a positive electrode of a sampling signal or a negative electrode of a sampling signal. The outer sides of the remaining pins, except for the second pin or the third pin in an idle state, are respectively led out through wires and connected to the blood glucose meter, and the inner sides thereof are formed into a sampling loop through a trigger current short-circuit switch and different HCT channel sampling resistors. In terms of hardware, a compatible design of an electronic test strip and an electronic socket is comprehensively considered, thereby reducing procurement and processing costs.

Description

Technical Field

[0001] The invention relates to the technical field of blood sugar detection, and in particular to a universal PCB board for electronic test strips and electronic sockets of a blood sugar meter. Background Art

[0002] Currently, electronic test strips and electronic sockets are used as testing tools in the production process of blood glucose meters.

[0003] The working principle of the existing blood glucose meter includes: inserting the electronic socket into the blood glucose meter, the blood glucose meter detects that the electronic socket has been inserted, and the blood glucose meter prompts to drop blood. When the electronic test strip is inserted into the electronic socket, the blood glucose meter will detect the trigger current of the electronic socket 1-4 pins in real time. When the trigger current is less than the set threshold current, metal tweezers are needed to short-circuit the electronic socket 1 and 4 pins. When the trigger current is greater than the set threshold current, the current blood glucose meter starts to count down for 5 seconds, and finally displays the test results after analysis and calculation.

[0004] The existing electronic test strip PCB board uses surface mount resistors with 8 different resistance values. The existing electronic socket PCB board does not have surface mount resistors. The two PCB boards are not universal, resulting in high preparation costs. In addition, the accuracy of surface mount resistors is ±1% and ±5%, resulting in large deviations in test results. Summary of the invention

[0005] In view of the above analysis, an embodiment of the present invention aims to provide a universal PCB board for an electronic test strip and an electronic socket of a blood glucose meter, so as to solve the problem of high cost caused by the non-universality of the PCB board in the prior art.

[0006] On the one hand, an embodiment of the present invention provides a universal PCB board for an electronic test strip and an electronic socket of a blood glucose meter, comprising a test strip socket, an HCT channel sampling resistor, and a trigger current short-circuit switch; wherein:

[0007] The test strip socket is provided with four pins, namely, a first pin, a second pin, a third pin and a fourth pin; the fourth pin is used as a trigger signal input terminal; one of the second pin or the third pin is in an empty state, and the other is used as a positive electrode of a sampling signal or a negative electrode of a sampling signal;

[0008] The outer sides of the remaining pins except the second pin or the third pin in an idle state are led out through wires and connected to the blood glucose meter, and the inner sides thereof form a sampling loop by triggering a current short-circuit switch and different HCT channel sampling resistors.

[0009] The beneficial effects of the above technical solution are as follows: a cost-effective PCB board universal for electronic test strips and electronic sockets of blood glucose meters is disclosed. In terms of hardware, a compatible design of an electronic test strip and an electronic socket is comprehensively considered, and HCT channel sampling resistors are used instead of label resistors, which reduces procurement and processing costs and improves test accuracy. The PCB board uses a trigger current short-circuit switch. When the trigger current is less than the set threshold current, the trigger current short-circuit switch is pressed. When the trigger current is greater than the set threshold current, the blood glucose meter starts a countdown of 5 seconds, and finally displays the test results after analysis and calculation. During the production process, the operating difficulty of the operator is greatly reduced, saving working time, thereby improving the production efficiency of the production line.

[0010] Based on the further improvement of the above device, in the sampling circuit, the resistance value of the HCT channel sampling resistor is set so that:

[0011] When the blood glucose concentration is 33.3 mmol / L, the resistance of the sampling circuit is 66.7 kΩ;

[0012] When the blood glucose concentration is 27.8 mmol / L, the resistance of the sampling circuit is 80 kΩ;

[0013] When the blood glucose concentration is 22.2 mmol / L, the resistance of the sampling circuit is 100 kΩ;

[0014] When the blood glucose concentration is 11.1 mmol / L, the resistance of the sampling circuit is 200 kΩ;

[0015] When the blood glucose concentration is 7.4 mmol / L, the resistance of the sampling circuit is 300 kΩ;

[0016] When the blood glucose concentration is 1.1 mmol / L, the resistance of the sampling circuit is 2020 kΩ;

[0017] When the blood glucose concentration value is the LO low value, the resistance value of the sampling loop is 4MΩ;

[0018] When the blood glucose concentration value is a high value Hi, the resistance value of the sampling loop is 50 kΩ.

[0019] Further, the HCT channel sampling resistor includes an HCT channel sampling resistor R5; and,

[0020] The second pin is in an idle state;

[0021] The first pin is connected to the fourth pin via a trigger current short-circuit switch;

[0022] The third pin is connected to the fourth pin via the HCT channel sampling resistor R5.

[0023] Further, the HCT channel sampling resistors include HCT channel sampling resistor R1, HCT channel sampling resistor R2, HCT channel sampling resistor R3, and HCT channel sampling resistor R4; and,

[0024] The third pin is in a vacant state;

[0025] The first pin is connected to the fourth pin via the HCT channel sampling resistor R4 and the HCT channel sampling resistor R1 in sequence;

[0026] The second pin is connected to the fourth pin via the HCT channel sampling resistor R3 and the HCT channel sampling resistor R2 in sequence.

[0027] Furthermore, the PCB board also includes a first selection switch, a second selection switch, a third selection switch, and a fourth selection switch; and,

[0028] The second pin is in an idle state;

[0029] The first pin is divided into two paths, one path is connected to the fourth pin via the first selection switch and the trigger current short-circuit switch, and the other path is connected to the fourth pin via the second selection switch, the HCT channel sampling resistor R4, and the HCT channel sampling resistor R1 in sequence; the third pin is divided into two paths, one path is connected to the fourth pin via the third selection switch and the HCT channel sampling resistor R5 in sequence, and the other path is connected to the fourth pin via the fourth selection switch, the HCT channel sampling resistor R3, and the HCT channel sampling resistor R2 in sequence.

[0030] Furthermore, the PCB board also includes a first selection switch, a second selection switch, a third selection switch, and a fourth selection switch; and,

[0031] The third pin is in an idle state;

[0032] The first pin is divided into two paths, one path is connected to the fourth pin via the first selection switch and the trigger current short-circuit switch, and the other path is connected to the fourth pin via the second selection switch, the HCT channel sampling resistor R4, and the HCT channel sampling resistor R1 in sequence; the second pin is divided into two paths, one path is connected to the fourth pin via the third selection switch and the HCT channel sampling resistor R5 in sequence, and the other path is connected to the fourth pin via the fourth selection switch, the HCT channel sampling resistor R3, and the HCT channel sampling resistor R2 in sequence.

[0033] Furthermore, when the PCB board is used for an electronic test strip, the first selection switch and the third selection switch are opened, and the second selection switch and the fourth selection switch are closed.

[0034] Furthermore, when the PCB board is used in an electronic socket, the first selection switch and the third selection switch are closed, and the second selection switch and the fourth selection switch are opened.

[0035] Furthermore, HCT channel sampling resistor R1, HCT channel sampling resistor R2, HCT channel sampling resistor R3, and HCT channel sampling resistor R4 are direct-insertion precision resistors with an accuracy of ±0.1%.

[0036] Furthermore, the PCB board further includes a first selection switch, a second selection switch, a third selection switch, a fourth selection switch, a fifth selection switch, and a sixth selection switch; and,

[0037] The first pin is divided into two paths, one path is connected to the fourth pin via the first selection switch and the trigger current short-circuit switch, and the other path is connected to the fourth pin via the second selection switch, the HCT channel sampling resistor R4, and the HCT channel sampling resistor R1 in sequence;

[0038] The second pin is divided into two paths, one path is vacant after passing through the third selection switch, and the other path is connected to the fourth pin via the fourth selection switch, the HCT channel sampling resistor R3, and the HCT channel sampling resistor R2 in sequence;

[0039] The third pin is divided into two paths, one path is connected to the fourth pin via the fifth selection switch and the HCT channel sampling resistor R5 in sequence, and the other path is left vacant after passing through the sixth selection switch;

[0040] When the PCB board is used for an electronic test strip, the first selection switch, the third selection switch, and the fifth selection switch are disconnected, and the second selection switch, the fourth selection switch, and the sixth selection switch are closed;

[0041] When the PCB board is used for an electronic socket, the first selection switch, the third selection switch and the fifth selection switch are closed, and the second selection switch, the fourth selection switch and the sixth selection switch are opened.

[0042] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the invention, nor is it intended to limit the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0044] Figure 1 A schematic diagram showing the composition of a universal PCB board of an electronic test strip electronic socket of a blood glucose meter in Example 1 is shown;

[0045] Figure 2 A schematic diagram showing the principle of a PCB board used as an electronic test strip in Example 2 is shown;

[0046] Figure 3A schematic diagram showing the principle of a PCB board used as an electronic socket in Example 2 is shown.

[0047] Reference numerals

[0048] CN2- test strip socket; R1, R2, R3, R4, R5- HCT channel sampling resistors; K1- trigger current short-circuit switch; Atrigger- trigger signal; W1- second pin signal; W2- first pin signal; W3- third pin signal. DETAILED DESCRIPTION

[0049] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0050] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0051] Example 1

[0052] One embodiment of the present invention discloses a universal PCB board for an electronic test strip and an electronic socket of a blood glucose meter, comprising a test strip socket CN2, an HCT channel sampling resistor, and a trigger current short-circuit switch K1.

[0053] Among them, the test strip socket CN2 is provided with four pins, namely the first pin, the second pin, the third pin and the fourth pin. The fourth pin is used as the trigger signal input terminal (outputting the trigger signal A trigger). One of the second pin or the third pin is in an empty state, and the other is used as the positive electrode of the sampling signal or the negative electrode of the sampling signal. Accordingly, the first pin is used as the negative electrode of the sampling signal or the positive electrode of the sampling signal.

[0054] The outer sides of the remaining pins except the second pin or the third pin which is in an idle state are led out through wires and connected to the blood glucose meter, and the inner sides thereof are formed into a sampling circuit by triggering the current short-circuit switch K1 and different HCT channel sampling resistors, such as Figure 1 shown.

[0055] In the above sampling loop, the resistance value of the HCT channel sampling resistor is set so that: when the blood glucose concentration value is 33.3mmol / L, the resistance value of the sampling loop is 66.7kΩ; when the blood glucose concentration value is 27.8 mmol / L, the resistance value of the sampling loop is 80kΩ; when the blood glucose concentration value is 22.2mmol / L, the resistance value of the sampling loop is 100kΩ; when the blood glucose concentration value is 11.1mmol / L, the resistance value of the sampling loop is 200kΩ; when the blood glucose concentration value is 7.4mmol / L, the resistance value of the sampling loop is 300kΩ; when the blood glucose concentration value is 1.1mmol / L, the resistance value of the sampling loop is 2020kΩ; when the blood glucose concentration value is LO low value, the resistance value of the sampling loop is 4MΩ; when the blood glucose concentration value is Hi high value, the resistance value of the sampling loop is 50kΩ. The above error is ±0.3 mmol / l.

[0056] Compared with the prior art, this embodiment discloses a cost-effective PCB board universal for electronic test strips and electronic sockets of blood glucose meters. In terms of hardware, a compatible design of an electronic test strip and an electronic socket is comprehensively considered, and HCT channel sampling resistors are used instead of label resistors, which reduces procurement and processing costs and improves test accuracy. The PCB board uses a trigger current short-circuit switch K1. When the trigger current is less than the set threshold current, the K1 short-circuit switch is pressed. When the trigger current is greater than the set threshold current, the blood glucose meter starts a countdown of 5 seconds, and the test results are finally displayed after analysis and calculation. In the production process, the operating difficulty of the operator is greatly reduced, working time is saved, and the production efficiency of the production line is improved.

[0057] Example 2

[0058] Based on the improvement of Example 1, when the PCB board is used for the electronic test strip, the HCT channel sampling resistors include HCT channel sampling resistors R1, HCT channel sampling resistors R2, HCT channel sampling resistors R3, and HCT channel sampling resistors R4. Figure 2 As shown. In addition, the third pin (third pin signal W3) is in an idle state. The first pin (first pin signal W2) is connected to the fourth pin via the HCT channel sampling resistor R4 and the HCT channel sampling resistor R1 in sequence. The second pin (second pin signal W1) is connected to the fourth pin via the HCT channel sampling resistor R3 and the HCT channel sampling resistor R2 in sequence.

[0059] The electronic test strip uses a combination of R1, R2, R3, and R4 resistors. By selecting resistors of different resistance values ​​for R1, R2, R3, and R4, 8 specifications can be combined.

[0060] Preferably, when the PCB board is used for an electronic socket, the HCT channel sampling resistor includes an HCT channel sampling resistor R5. In addition, the second pin is in a vacant state. The first pin is connected to the fourth pin via the trigger current short-circuit switch K1. The third pin is connected to the fourth pin via the HCT channel sampling resistor R5. Figure 3 shown.

[0061] The electronic socket uses a combination of CN2, R5, and K1, CN2 is a test strip socket, R5 is an HCT channel sampling resistor, and K1 is a trigger current short-circuit switch.

[0062] Optionally, the PCB board also includes a first selection switch, a second selection switch, a third selection switch, and a fourth selection switch. And the second pin is in an idle state. The first pin is divided into two paths, one path is connected to the fourth pin through the first selection switch and the trigger current short-circuit switch K1, and the other path is connected to the fourth pin through the second selection switch, the HCT channel sampling resistor R4, and the HCT channel sampling resistor R1 in sequence. The third pin is divided into two paths, one path is connected to the fourth pin through the third selection switch and the HCT channel sampling resistor R5 in sequence, and the other path is connected to the fourth pin through the fourth selection switch, the HCT channel sampling resistor R3, and the HCT channel sampling resistor R2 in sequence.

[0063] Optionally, the PCB board also includes a first selection switch, a second selection switch, a third selection switch, and a fourth selection switch. And, the third pin is in an idle state. The first pin is divided into two paths, one path is connected to the fourth pin through the first selection switch and the trigger current short-circuit switch K1, and the other path is connected to the fourth pin through the second selection switch, the HCT channel sampling resistor R4, and the HCT channel sampling resistor R1 in sequence. The second pin is divided into two paths, one path is connected to the fourth pin through the third selection switch and the HCT channel sampling resistor R5 in sequence, and the other path is connected to the fourth pin through the fourth selection switch, the HCT channel sampling resistor R3, and the HCT channel sampling resistor R2 in sequence.

[0064] The above design realizes the integration of PCB board functions. When the PCB board is used for electronic test strips, the first selection switch and the third selection switch are disconnected, and the second selection switch and the fourth selection switch are closed. When the PCB board is used for electronic sockets, the first selection switch and the third selection switch are closed, and the second selection switch and the fourth selection switch are disconnected.

[0065] Optionally, the PCB board also includes a first selection switch, a second selection switch, a third selection switch, a fourth selection switch, a fifth selection switch, and a sixth selection switch. In addition, the first pin is divided into two paths, one path is connected to the fourth pin via the first selection switch and the trigger current short-circuit switch K1, and the other path is connected to the fourth pin via the second selection switch, the HCT channel sampling resistor R4, and the HCT channel sampling resistor R1 in sequence. The second pin is divided into two paths, one path is vacant after passing through the third selection switch, and the other path is connected to the fourth pin via the fourth selection switch, the HCT channel sampling resistor R3, and the HCT channel sampling resistor R2 in sequence. The third pin is divided into two paths, one path is connected to the fourth pin via the fifth selection switch and the HCT channel sampling resistor R5 in sequence, and the other path is vacant after passing through the sixth selection switch.

[0066] When the PCB board is used for an electronic test strip, the first selection switch, the third selection switch, and the fifth selection switch are disconnected, and the second selection switch, the fourth selection switch, and the sixth selection switch are closed.

[0067] When the PCB board is used for an electronic socket, the first selection switch, the third selection switch and the fifth selection switch are closed, and the second selection switch, the fourth selection switch and the sixth selection switch are opened.

[0068] Preferably, the HCT channel sampling resistors R1, R2, R3 and R4 are direct-insertion precision resistors with an accuracy of ±0.1%, which increases the accuracy to ±0.1% and reduces the test deviation.

[0069] Compared with Example 1, the universal PCB board for the electronic test strip and electronic socket of the blood glucose meter provided in this embodiment has the following beneficial effects:

[0070] 1. Select ±0.1% precision resistors to improve resistance accuracy and reduce test deviation.

[0071] 2. The sampling circuit has a simple structure and uses fewer components. Half of the PCB processing cost can be saved. This makes the present invention have a significant competitive advantage in the fiercely competitive market, and is particularly suitable for the modern manufacturing industry that pursues high efficiency and high-quality output.

[0072] 3. It supports adjusting the number of selection switches and sampling circuit configuration according to actual production needs. The electronic test strip uses the combination of R1, R2, R3, and R4 resistors, and the electronic socket uses the combination of CN2, R5, and K1, providing a high degree of flexibility and scalability.

[0073] Embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein are selected to best explain the principles of the embodiments, practical applications, or improvements over the prior art, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A universal PCB board for electronic test strips and electronic sockets of a blood glucose meter, characterized in that: It includes a test strip socket, an HCT channel sampling resistor, and a trigger current short-circuit switch; wherein the test strip socket is provided with four pins, namely, a first pin, a second pin, a third pin, and a fourth pin; the fourth pin is used as a trigger signal input terminal; one of the second pin or the third pin is in an empty state, and the other is used as a sampling signal positive electrode or a sampling signal negative electrode; The outer sides of the remaining pins except the second pin or the third pin which is in an idle state are respectively led out through wires and connected to the blood glucose meter, and the inner sides thereof are formed into a sampling loop by triggering a current short-circuit switch and different HCT channel sampling resistors; Also includes a first selection switch, a second selection switch, a third selection switch, and a fourth selection switch; When the second pin is in an idle state, the first pin is divided into two paths, one path is connected to the fourth pin via the first selection switch and the trigger current short-circuit switch, and the other path is connected to the fourth pin via the second selection switch, the HCT channel sampling resistor R4, and the HCT channel sampling resistor R1 in sequence; the third pin is divided into two paths, one path is connected to the fourth pin via the third selection switch and the HCT channel sampling resistor R5 in sequence, and the other path is connected to the fourth pin via the fourth selection switch, the HCT channel sampling resistor R3, and the HCT channel sampling resistor R2 in sequence; When the third pin is in an idle state; the first pin is divided into two paths, one path is connected to the fourth pin via the first selection switch and the trigger current short-circuit switch, and the other path is connected to the fourth pin via the second selection switch, the HCT channel sampling resistor R4, and the HCT channel sampling resistor R1 in sequence; the second pin is divided into two paths, one path is connected to the fourth pin via the third selection switch and the HCT channel sampling resistor R5 in sequence, and the other path is connected to the fourth pin via the fourth selection switch, the HCT channel sampling resistor R3, and the HCT channel sampling resistor R2 in sequence; When the PCB board is used for an electronic test strip, the first selection switch and the third selection switch are opened, and the second selection switch and the fourth selection switch are closed; When the PCB board is used in the electronic socket, the first selection switch and the third selection switch are closed, and the second selection switch and the fourth selection switch are opened.

2. The universal PCB board for the electronic test strip and electronic socket of the blood glucose meter according to claim 1, characterized in that: In the sampling circuit, the resistance value of the HCT channel sampling resistor is set so that: When the blood glucose concentration is 33.3 mmol / L, the resistance of the sampling circuit is 66.7 kΩ; When the blood glucose concentration is 27.8 mmol / L, the resistance of the sampling circuit is 80 kΩ; When the blood glucose concentration is 22.2 mmol / L, the resistance of the sampling circuit is 100 kΩ; When the blood glucose concentration is 11.1 mmol / L, the resistance of the sampling circuit is 200 kΩ; When the blood glucose concentration is 7.4 mmol / L, the resistance of the sampling circuit is 300 kΩ; When the blood glucose concentration is 1.1 mmol / L, the resistance of the sampling circuit is 2020 kΩ; When the blood glucose concentration value is the LO low value, the resistance value of the sampling loop is 4MΩ; When the blood glucose concentration value is a high value Hi, the resistance value of the sampling loop is 50 kΩ.

3. The universal PCB board for the electronic test strip and electronic socket of the blood glucose meter according to claim 1 or 2, characterized in that: The HCT channel sampling resistor includes an HCT channel sampling resistor R5; and the second pin is in an idle state; the first pin is connected to the fourth pin via a triggered current short-circuit switch; and the third pin is connected to the fourth pin via the HCT channel sampling resistor R5.

4. The universal PCB board for the electronic test strip and electronic socket of the blood glucose meter according to claim 1 or 2, characterized in that: The HCT channel sampling resistors include an HCT channel sampling resistor R1, an HCT channel sampling resistor R2, an HCT channel sampling resistor R3, and an HCT channel sampling resistor R4; and the third pin is in an idle state; The first pin is connected to the fourth pin via the HCT channel sampling resistor R4 and the HCT channel sampling resistor R1 in sequence; The second pin is connected to the fourth pin via the HCT channel sampling resistor R3 and the HCT channel sampling resistor R2 in sequence.

5. The universal PCB board for the electronic test strip and electronic socket of the blood glucose meter according to claim 1, characterized in that: HCT channel sampling resistor R1, HCT channel sampling resistor R2, HCT channel sampling resistor R3, and HCT channel sampling resistor R4 are direct-insertion precision resistors with an accuracy of ±0.1%.

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