CN117233223A - Multichannel detection circuit, device and method - Google Patents

Abstract

The invention relates to the field of chip detection technology, in particular to a multi-channel detection circuit, device and method, which includes a data acquisition unit including a processing module, a channel selection module and a first power supply module. The processing module is connected to the channel selection module. The first power module is connected to the processing module and the channel selection module respectively; the interactive unit is connected to the processing module and the first power module respectively; the channel selection module includes a transimpedance preamplifier circuit and the A constant potential circuit connected by a transimpedance preamplifier circuit; through the cooperation between the processing module, the channel selection module, the first power module and the interactive unit, the present invention can realize the function of single-channel connection and multi-channel detection, and avoid the testing process It is cumbersome to replace different test interfaces to achieve multi-channel testing.

Description

A multi-channel detection circuit, device and method

Technical field

The invention relates to the field of chip detection technology, in particular to a multi-channel detection circuit, device and method.

Background technique

Electrochemical workstations are divided into single-channel workstations and multi-channel workstations; single-channel workstations can only test one sample at a time, while multi-channel workstations are equivalent to multiple single-channel electrochemical workstations assembled together and can test multiple samples at the same time. , so it has higher testing efficiency; multi-channel workstations are suitable for scenarios that require large-scale R&D testing, and can significantly speed up R&D; however, the electrochemical workstations currently on the market are mainly single-channel workstations, and multi-channel workstation test equipment Non-integrated, large in size, and disruptive to information transmission. The test process requires replacing different test interfaces to achieve multi-channel testing. The test process and methods are cumbersome. The data collected by multi-channel testing needs to be transferred to a computer for output.

Contents of the invention

The purpose of this section is to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, the abstract and the title of the invention to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the invention.

In view of the above-mentioned or existing problems in the prior art that the test process requires replacing different test interfaces to achieve multi-channel testing, the present invention is proposed.

Therefore, an object of the present invention is to provide a multi-channel detection circuit.

In order to solve the above technical problems, the present invention provides the following technical solution: a multi-channel detection circuit, including,

The data acquisition unit includes a processing module, a channel selection module and a first power supply module. The processing module is connected to the channel selection module, and the first power supply module is connected to the processing module and the channel selection module respectively;

The interactive unit is respectively connected to the processing module and the first power module.

As a preferred solution of the multi-channel detection circuit of the present invention, the channel selection module includes a transimpedance preamplifier circuit and a constant potential circuit connected to the transimpedance preamplifier circuit;

Wherein, the transimpedance preamplifier circuit and the constant potential circuit are respectively connected to the first power module.

As a preferred solution of the multi-channel detection circuit of the present invention, the resistor network circuit of the transimpedance preamplifier circuit is connected to the processing module.

As a preferred solution of the multi-channel detection circuit of the present invention, the transimpedance preamplifier circuit also includes a reference electrode test port and a counter electrode test port;

Wherein, the counter electrode test port is connected to the reference electrode test port.

As a preferred solution of the multi-channel detection circuit of the present invention, the interaction unit includes a control module, a first USB interface and a second power supply module, and the control module communicates with the processing module and the third power supply module through the first USB interface respectively. One power module connection.

Beneficial effects of the multi-channel detection circuit of the present invention: through the cooperation between the processing module, the channel selection module, the first power module and the interactive unit, the present invention can realize the function of single-channel connection and multi-channel detection, avoiding the need for replacement during the test process Different test interfaces can make multi-channel testing cumbersome.

In view of the fact that during actual use, there are still problems such as non-integration of multi-channel workstation test equipment, large size, and interference with information transmission.

In order to solve the above technical problems, the present invention also provides the following technical solutions: a multi-channel detection device includes a multi-channel detection device including the multi-channel detection circuit; and,

The carrying shell includes a chip electrode slot and an installation slot, and the control module is embedded in the installation slot;

The chip electrode connection unit includes a chip electrode connection circuit board and electrode spring pieces and spring terminals respectively connected to both sides of the chip electrode connection circuit board;

Wherein, the reference electrode test port, the counter electrode test port and the working motor port of the constant potential circuit are all connected to the spring-type terminal;

Wherein, the electrode elastic piece is embedded in the protective shell of the chip electrode connection unit, the chip electrode connection circuit board and the spring terminal are provided in the protective shell, and one end of the protective shell is embedded with the chip Rotate the connection in the electrode slot.

As a preferred solution of the multi-channel detection device of the present invention, wherein: an accommodation space is provided in the carrying case;

Wherein, the data collection unit is arranged in the accommodation space.

As a preferred solution of the multi-channel detection device of the present invention, a chip to be tested is provided in the chip electrode slot;

Wherein, the electrode elastic piece is connected to the chip to be tested.

The beneficial effects of the multi-channel detection device of the present invention: the present invention integrates the data collection unit, the interaction unit, the carrying shell and the chip electrode connection unit into one body, which greatly reduces the detection volume, reduces the anti-interference problem of information transmission, and improves the detection speed. and accuracy.

In view of the actual use process, there are still testing methods, and the data collected by multi-channel detection needs to be transferred to the proofreading computer for output.

In order to solve the above technical problems, the present invention also provides the following technical solution: a multi-channel detection method includes a multi-channel detection device, and the steps of the multi-channel detection method include:

Open the interactive unit and set the collection test method;

Connect the chip electrode connection module to the chip under test placed in the chip electrode card slot;

Conduct four-stage life cycle testing of the chip under test to obtain and collect test data;

The test data is collected and transmitted to the control module to calculate the peak height and draw a peak height cycle number chart.

As a preferred solution of the multi-channel detection method of the present invention, the four-stage life cycle includes the collection interface life cycle, the sensor interface life cycle, the curve interface life cycle and the historical quantity life cycle.

The beneficial effects of the multi-channel detection method of the present invention: the present invention realizes cyclic voltammetry (CV) and square wave voltammetry (SWV) of electrochemical workstations with multi-channel control of chip electrodes by combining circuit and software operations, and by utilizing processing The module imports square wave voltammetry (SWV) data for processing, realizing high-throughput acquisition and data processing functions of multi-channel chip electrodes.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting any creative effort. in:

Figure 1 is an overall schematic diagram of a multi-channel detection circuit.

Figure 2 is a schematic diagram of the processing module of the multi-channel detection circuit.

Figure 3 is a schematic diagram of the channel selection module of the multi-channel detection circuit.

Figure 4 is a schematic diagram of the power supply display circuit of the multi-channel detection circuit.

Figure 5 is a schematic diagram of the battery charging and discharging circuit of the multi-channel detection circuit.

Figure 6 is a schematic diagram of the power monitoring circuit of the multi-channel detection circuit.

Figure 7 is a schematic diagram of the voltage conversion circuit of the multi-channel detection circuit.

Figure 8 is a schematic diagram of the serial port to UAB circuit of the multi-channel detection circuit.

Figure 9 is a schematic diagram of the buzzer circuit of the multi-channel detection circuit.

Figure 10 is a schematic diagram of the acquisition connection display circuit of the multi-channel detection circuit.

Figure 11 is an overall schematic diagram of the multi-channel detection device.

Figure 12 is a schematic diagram of the chip electrode connection unit of the multi-channel detection device.

Figure 13 is a schematic flow chart of the detection steps of the multi-channel detection method.

Figure 14 is a schematic diagram of the APP interface of the multi-channel detection method.

Figure 15 is a schematic diagram of the menu bar-device interface of the multi-channel detection method.

Figure 16 is a schematic diagram of the software page-menu bar-cyclic voltammetry mode setting interface of the multi-channel detection method.

Figure 17 is a schematic diagram of the software page-menu bar-square wave voltammetry mode setting interface for the multi-channel detection method.

Figure 18 is a schematic diagram of the software page-menu bar-import interface of the multi-channel detection method.

Detailed ways

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the specific implementation modes of the present invention will be described in detail below with reference to the accompanying drawings.

Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Those skilled in the art can do so without departing from the connotation of the present invention. Similar generalizations are made, and therefore the present invention is not limited to the specific embodiments disclosed below.

Second, reference herein to "one embodiment" or "an embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

Example 1

Referring to Figures 1 and 2, a first embodiment of the present invention is provided. This embodiment provides a multi-channel detection circuit, which includes a data acquisition unit 100 to implement working electrode (WE)/reference electrode (CE)/counter electrode (RE) accurate collection and underlying calculation, and is used to transmit the collection data with the interactive unit 200. The data collection unit 100 includes a processing module 101, a channel selection module 102 and a first power supply module 103. The processing module 101 can receive the interactive unit 200 sends the command signal, executes the startup channel selection module 102 for detection, and transmits the collected chip data under test to the interactive unit 200. The channel selection module 102 provides the working electrode (WE), the reference electrode (CE) and the counter electrode. Electrode (RE) and other multiple circuit paths realize multiple channel gating functions of the working electrode (WE), the reference electrode (CE) and the counter electrode (RE). The processing module 101 is connected to the channel selection module 102 for different The type of chip is equipped with corresponding circuit conduction to realize the selective collection or sequential collection of multi-channel electrodes; the first power module 103 supplies power to the processing module 101 and the channel selection module 102, and the first power module 103 transmits one-way power to the processing module respectively. 101 is connected to the channel selection module 102; the interactive unit 200 plays the role of starting the detection program, sending instruction signals, receiving collected data and proofreading, and is connected to the processing module 101 and the first power module 103 respectively. Specifically, the processing module 101 model for STM32H750.

Further, as shown in Figure 3, the channel selection module 102 includes a transimpedance preamplifier circuit 102a and a constant potential circuit 102b connected to the transimpedance preamplifier circuit 102a. The transimpedance preamplifier circuit 102a provides a reference electrode (CE) and the counter electrode (RE) circuit path, the constant potential circuit 102b provides a working electrode (WE) circuit channel, and the cooperation between the transimpedance preamplifier circuit 102a and the constant potential circuit 102b provides a multi-channel electrode for the chip to be detected Choose to collect or collect the basics in turn.

Among them, the transimpedance preamplifier circuit 102a is connected to the processing module 101, and the resistance network circuit 102a-1 of the transimpedance preamplifier circuit 102a is connected to the processing module 101, which can realize the startup of collecting the reference electrode (CE) and the counter electrode ( RE) circuit path performs two-way information signal transmission for data collection and collection data transmission on the chip; specifically, pin 8 (D), pin 1 (A0), and pin 16 of the microcontroller U9 of the transimpedance preamplifier circuit 102a (A1) and pin 15 (A2) are respectively connected to pin 55 (RE), pin 24 (PA3), pin 20 (PA1) and pin 22 (PA2) of the processing module 101, and the resistor network circuit 102a The pin 8 (D), pin 1 (A0), pin 16 (A1) and pin 15 (A2) of the -1 microcontroller U10 are respectively connected with the pin 54 (CE) and pin 24 ( PA3), pin 20 (PA1) and pin 22 (PA2) are connected correspondingly.

Among them, the constant potential circuit 102b is used to receive the startup acquisition signal of the transimpedance preamplifier circuit 102a, and unidirectionally transmit the working electrode (WE) circuit path acquisition chip data to the processing module 101 and the transimpedance preamplifier circuit 102a. The one-way transmission of the constant potential circuit 102b is connected to the processing module 101; specifically, pin 8 (D), pin 1 (A0), pin 16 (A1) and pin 15 (A2) of the microcontroller U7 of the constant potential circuit 102b ) are respectively connected to pin 53 (WE), pin 24 (PA3), pin 20 (PA1) and pin 22 (PA2) of the processing module 101; it should be noted that the microcontroller U9, the microcontroller U10 and the microcontroller U7 The model number is ADG1408YRUZ.

It should be noted that the transimpedance preamplifier circuit 102a also includes a reference electrode test port 102a-2 and a counter electrode test port 102a-3; wherein the counter electrode test port 102a-3 is connected to the reference electrode test port 102a-2. The counter electrode collection data is transmitted to the connection. The potentiostatic circuit 102b includes a working electrode test port 102b-1, a reference electrode test port 102a-2 and a counter electrode test port 102a-3. The chip electrodes are connected to the circuit board through integrated wires. It needs to be explained. It is noted that the working electrode test port 102b-1, the reference electrode test port 102a-2 and the counter electrode test port 102a-3 are respectively provided with pin 4 (S1), pin 5 (S2) and pin 6 (S3). , pin 7 (S4), pin 12 (S5), pin 11 (S6), pin 10 (S7), pin 9 (S8) 8 circuit channels (according to testing, not limited to 8), working The 8 ports of the electrode test port 102b-1, the reference electrode test port 102a-2 and the counter electrode test port 102a-3 are respectively connected to 8 chip electrode connection circuit boards, which are divided into 8 by three ADG1408YRUZ digital-to-analog converters. With a three-electrode channel, the chip electrode connection module can be designed and replaced for different microfluidic chips (i.e., the chip to be tested), and an eight-channel chip with 8 electrodes can be tested at the same time, speeding up the detection and collection efficiency.

Further, the transimpedance preamplifier circuit 102a and the constant potential circuit 102b are respectively connected to the first power supply module 103; specifically, the first power supply module 103 includes a power supply display circuit 103a, a battery charging and discharging circuit 103b, a power monitoring circuit 103c and a voltage monitoring circuit 103c. Conversion circuit 103d; Specifically, as shown in Figure 4, the power supply display circuit 103a is used to display whether the external 12V power is normally connected (if connected, the green light is on; if connected, the green light is off); as shown in Figure 5, the battery The charging and discharging circuit 103b can charge, store and supply power to the voltage conversion circuit 103d. In the figure, B1 and B6 are series and parallel connections of batteries, and Q1 to Q3 are insulated gate field effect transistor (MOSFET) circuits used to balance the charging and discharging of the battery pack, allowing the battery to balance. Charging balance between; As shown in Figure 6, the power monitoring circuit 103c is a voltage dividing circuit, used to collect voltage for the ADC to determine the battery power. The pin ADC-CH1 of the power monitoring circuit 103c and the pin 18 (PA0) of the processing module 101 ) are connected; as shown in Figure 7, the voltage conversion circuit 103d is used to stabilize and convert the voltage, thereby providing the isolated and regulated DC ±6V operational amplifier analog power supply required for the processing module 101 and the channel selection module 102 to detect and collect. +3.3V analog and digital power supply, +5V and +5.5V digital power supply. Among them, the A+6V voltage input by the voltage conversion circuit 103d is connected to pin 7 (A+6V) and pin 9 (A+) of the processing module 101 respectively. 6V), and the microcontroller pin 2 (EN) and pin 13 (VDD) of the transimpedance preamplifier circuit 102a, the constant potential circuit 102b and the resistor network circuit 102a-1 are connected in parallel, and the voltage conversion circuit 103d inputs A+6V The voltages are respectively connected with pin 8 (A-6V) and pin 10 (A-6V) of the processing module 101 and the microcontroller pin 3 (of the transimpedance preamplifier circuit 102a, the constant potential circuit 102b and the resistor network circuit 102a-1 VSS) are connected in parallel, and the D+3.3V voltage input by the voltage conversion circuit 103d is respectively connected with pin 39 (D+3.3V) and pin 41 (D+3.3V) of the processing module 101; it should be noted that the 12V external The power supply is respectively connected to the power supply display circuit 103a, the battery charging and discharging circuit 103b, the power monitoring circuit 103c and the voltage conversion circuit 103d.

Further, the interactive unit 200 includes a control module 201, a first USB interface 202 and a second power module 203. The control module 201 is connected to the processing module 101 and the first power module 103 through the first USB interface 202. The second power module 203 Connected to an external circuit template, the control module 201 plays the role of sending multi-channel acquisition signals, receiving acquisition data, and calibrating and comparing the acquisition data. Specifically, it can be a touch display flat panel (performance: Cortex A9, 1GB DDR3, 8GB eMMC, Android5.1), its specific human-machine interface software supports chip sampling parameter editing, supports dynamic graphic and text display of the sampling process, supports real-time storage of sampling process data, and supports sampling data table display and other functions, and the second power module 203 includes 220C AC to 12V DC power adapter, 12V DC lithium battery (capacity 5000ma/h) and 12V DC circuit. The 20C AC to 12V DC power adapter is connected to the 12V DC circuit through a 12V DC lithium battery (capacity 5000ma/h); among them, the first A USB interface 202 is connected to the serial port of the processing module 101 through the transfer module 104 of the data acquisition unit 100, and the transmission interface 202; specifically, the second USB interface 104a of the transfer module 104 is connected to the first USB interface 202 and the serial port to UAB respectively. The circuit 104b is connected to the first power module 103. The serial port to UAB circuit 104b is a communication interface for the processing module 101 to transmit and collect data and the control module 201 to detect and collect communication interfaces. As shown in Figure 8, the pins NC and pins of the serial port to UAB circuit 104b are Pins CH-RXD are both connected to pin 36 (PA9) of the processing module 101, and pins CH-TXD and pin NC of the serial port to UAB circuit 104b are both connected to pin 38 (PA10).

Further, the data collection unit 100 also includes a warning template 105. The warning template 105 includes a buzzer circuit 105a and a collection connection display circuit 105b. The buzzer circuit 105a plays a prompt sound for collection completion. As shown in Figure 9, the buzzer The pin of the circuit 105a is connected to the pin 48 (PA15) of the processing module 101, and the acquisition connection display circuit 105b is provided with green, yellow and blue prompt lights. When the chip to be detected is connected to the working electrode test port 102b-1, After the reference electrode test port 102a-2 and the counter electrode test port 102a-3 are connected, the green, yellow and blue indicator lights will light up respectively, indicating that the multi-channel has been connected normally. Specifically, as shown in Figure 10, the acquisition connection display The pin LED-SYS, the pin LED-CH1 and the pin LED--CH2 of the circuit 105b are respectively connected to the pin 45 (PC13), the pin 47 (PC14) and the pin 49 (PC15) of the processing module 101.

Further, the main hardware parameter range of the data acquisition unit 100 is provided here:

Voltage range: ±10V;

Tank voltage: ±10V(Max);

Current range: ±100mA/±200mA/±400mA;

Reference electrode input impedance: 1MΩ;

Sensitivity range: 4×10-8—0.1/0.2/0.4A, eight levels in total;

Input bias current: <10pA;

Current measurement resolution: <1pA;

Data acquisition system: 16-bit sampling, maximum 100KHz;

Power supply: DC12V/1.5A.

Through the cooperation between the processing module, the channel selection module, the first power module and the interactive unit, the present invention can realize the function of single-channel (single electrode) connection to multi-channel detection, and avoids the need to replace different test interfaces during the test process. Multi-channel testing is cumbersome.

Example 2

Referring to Figures 11 to 12, a second embodiment of the present invention is shown. Different from the previous embodiment, this embodiment provides a multi-channel detection device, which solves the problem of non-integration and large volume of multi-channel workstation test equipment. , the problem of interference in information transmission, which includes a multi-channel detection circuit; and, the carrying case 300 includes a chip electrode slot 301 and an installation slot 302. The chip electrode slot 301 provides accommodating space for the chip to be tested, and the installation slot 302 is used for the control module 201 to be embedded and installed on the multi-channel detection device, thereby realizing the integration of the detection equipment. The control module 201 is embedded in the installation slot 302; the chip electrode connection unit 400 includes a chip electrode connection circuit board 401 and a welding circuit board 401. The electrode elastic pieces 402 and spring terminals 403 are connected to both sides of the chip electrode connection circuit board 401; among them, the reference electrode test port 102a-2, the counter electrode test port 102a-3 and the working motor port 102b-1 of the constant potential circuit 102b All provide soldering connections between wires and spring-loaded terminals 403, thereby enabling the detection of multi-channel electrochemical chips (i.e., chips under test), and the detection data can be processed directly through the equipment. At the same time, this equipment can also be equipped with corresponding circuit conduction modules for different types of chip electrodes to achieve selective collection or sequential collection of multi-channel electrodes.

Specifically, the electrode spring piece 402 is used to connect to the electrode circuit of the chip under test. The electrode spring piece 402 is embedded in the protective shell 404 of the chip electrode connection unit 400. The chip electrode connection circuit board 401 and the spring terminal 403 are provided in the protective shell. In the body 404, the rotating shafts on both sides of one end of the protective housing 404 are embedded in the chip electrode slot 301 and connected through rotation. When detecting and collecting, rotate the protective housing 404, and the electrode shrapnel 402 will be embedded in the measurement hole of the chip to be tested.

It should be noted that there is an accommodation space provided in the carrying case 300, in which the data acquisition unit 100, the first USB interface 202 and the second power module 203 are all arranged in the accommodation space. The accommodation space of the carrying case 300 It plays the role of carrying and protecting the data collection unit 100, the first USB interface 202 and the second power module 203, and provides a basis for integrated detection.

Further, the chip electrode card slot 301 is provided with a chip to be tested; the electrode spring piece 402 is connected to the chip to be tested. Specifically, the chip electrode card slot 301 is provided with a card slot, and the chip to be tested is engaged in the card slot. , the chip to be tested is an eight-channel chip containing 8 electrodes, and the elastic piece of the electrode elastic piece 402 is in contact with the measuring pin of the chip to be tested.

The chip electrode connection unit 400 can be modified according to different types of electrodes. It can connect chip electrodes, or the electrode connection module can be replaced with an ordinary electrode clip for the connection of ordinary electrodes (non-chip electrodes). The connection method does not affect program use.

The invention integrates the data acquisition unit, the interaction unit, the carrying shell and the chip electrode connection unit into one body, which greatly reduces the detection volume, reduces the anti-interference problem of information transmission, and improves the detection speed and accuracy.

Example 3

Referring to Figure 13, a third embodiment of the present invention is shown. Different from the previous embodiment, this embodiment provides a multi-channel detection method, including a multi-channel detection device. The steps of the multi-channel detection method include: turning on the interactive unit 200, Set the collection test mode; connect the chip electrode connection unit 400 to the chip under test placed in the chip electrode card slot 301; conduct a four-stage life cycle test on the chip under test to obtain the collection test data; transmit the collection test data to the control module 201 Calculate the peak height and plot it as a peak height-cycle number graph.

Further, the steps of starting the interactive unit 200 and setting the collection test mode include:

Turn on the control module 201 switch of the interactive unit 200;

Start the multi-channel detection APP of the control module 201;

The main program starts;

Main program creation;

Bind the interface to the record page;

The initial USB authorization status is unknown;

Initialize the broadcast receiver to listen for USB insertion;

Bind state control.

It should be noted that, as shown in Figure 14, the multi-channel detection APP software mainly sets the menu bar, real-time data selection box, and status bar; among them, the menu bar includes: device, mode, start, stop, calibration, export, import, about ; Specifically, as shown in Figure 15, the equipment menu bar is used to display whether the equipment is normally connected to the electrochemical workstation, that is, the data acquisition unit 100; there are two electrochemical detection method options in the mode menu bar, that is, 2 modes are selectable. As shown in Figures 16 and 17, for cyclic voltammetry (CV) and square wave voltammetry (SWV), the relevant detection parameters can be set on the cyclic voltammetry selection page, including range (Range), starting voltage ( Init E), highest voltage (High E), lowest voltage (Low E), scan rate (ScanRate), quiescent time (Quiet Time), sampling interval (Sample Int), number of scans (Sweep Segment) and electrode channel selection ( Channel Switch); the square wave voltammetry selection page can set relevant detection parameters, including range (Range), starting voltage (Init E), end voltage (Final E), incremental voltage (Incr E), amplitude (Amplitude), frequency (Frequency), quiescent time (Quiet Time), cycle times (System Times), cycle interval time (Cycle Interval), cycle start electrode channel selection (Start Channel) and cycle end electrode channel selection (End Channel) ; The start menu bar is used to control the start of detection; the stop menu bar is used to control the stop of detection; the calibration menu bar is used to calibrate detection status; the export menu bar is used to export the current detection result data; the import menu bar is used to import square wave voltammetry After importing the data, the peak height can be calculated directly based on the real-time detection of square wave voltammetry of each channel and drawn into a peak height-cycle number graph, as shown in Figure 18; the basic performance of the software is recorded in the import menu bar; the interface also sets A real-time data selection box, which displays the data being detected when checked, and displays the result graph of the imported data when unchecked; the software interface also has a status bar, including stop status display (Stop), over-range display (Overflow) and load electrical status (SOC).

Further, the chip electrode connection unit 400 is inserted into and connected to the chip under test placed in the chip electrode slot 301 through the electrode elastic pieces 402 of the chip electrode connection unit 400 .

Further, a four-stage life cycle test is performed on the chip under test. The steps to obtain and collect test data include:

Enable a scheduled task that automatically refreshes the status bar;

Main program path status;

The main program resumes initialization;

Register broadcast receiver;

Check whether the chip under test is connected;

Connect the chip to be tested;

After connecting, start running the main program;

Conduct four-stage life cycle testing on the chip under test;

The buzzer circuit 105 emits a warning sound to log out the broadcast receiver;

Get the collected test data.

It should be noted that, to detect whether the chip to be tested is connected to the acquisition connection display circuit 105b, there are green, yellow and blue prompt lights. When the chip to be tested is connected to the working electrode test port 102b-1 and the reference electrode test port 102a- 2. After connecting to the electrode test port 102a-3, the green, yellow and blue prompt lights will light up respectively, indicating that the multi-channel is connected normally; if the green, yellow and blue lights do not light up or not all light up, check that the USB is not unknown Or authorized status, if yes, connect the standby chip; if not, the main program starts running.

It should be noted that the four-stage life cycle includes the collection interface life cycle, sensor interface life cycle, curve interface life cycle and historical quantity life cycle. The collection interface life cycle, sensor interface life cycle, curve interface life cycle and historical quantity life cycle test The automatic intercutting method of the program is adopted, which can be realized by editing the program code.

It should be noted that the test process can be ended after logging off the broadcast receiver, or the chip under test can be subjected to a four-stage life cycle test.

Further, the steps of collecting test data and transmitting them to the control module 201 to calculate the peak height and draw the peak height-cycle number diagram include:

Stop the test program and disconnect the chip under test;

The collected test data is transmitted to the APP data display interface of the control module 201 through the transfer module 104 and the first USB interface 202;

Import square wave voltammetry data;

The peak height is calculated based on the real-time detection of square wave voltammetry of each channel and plotted into a peak height-cycle number graph.

The real-time detected square wave voltammetry (SWV) diagram can be directly outputted by importing data, realizing the function of detecting the chip electrode and outputting the results.

To select and collect the chip under test or to collect in turn, set the relevant detection parameters on the square wave voltammetry selection page in the mode menu bar, including range (Range), starting voltage (Init E), and end voltage (FinalE). ), Quiet Time has the same meaning and setting range as in cyclic voltammetry parameter setting. In addition, incremental voltage (Incr E): the step value of the potential from the starting potential to the ending potential, use the keyboard Just enter the required voltage value, the setting range is "1-1000mV"; Amplitude: represents the difference between two adjacent stable potentials, the parameter setting range is "1-1000mV"; Frequency (Frequency) pulse frequency, The parameter setting range is "1-500"; cycle times (SystemTimes): refers to the number of square wave voltammetry scans of each electrode channel from the starting potential to the ending potential. Scanning from the starting electrode channel to the ending electrode channel is counted as one cycle; Cycle Interval: The time interval setting from the starting electrode channel to the next electrode channel, in seconds; Cycle starting electrode channel selection (Start Channel): The first electrode channel for cyclic scanning by square wave voltammetry ; Cycle end electrode channel selection (End Channel): the last electrode channel for cycle scanning using square wave voltammetry. If the cycle start electrode channel selection and cycle end electrode channel selection are set to the same electrode channel, the program will perform cyclic scans on the electrode channel according to the cycle interval.

When selecting the cyclic voltammetry interface in the mode menu bar, "select acquisition" means selecting the specified channel in the "Channel Switch" column for acquisition. After selection, the touch screen instructions are transmitted to the ARM processor through the USB interface, so that the ARM processor controls the ADG1408YRUZ digital-to-analog converter to select one of the eight channels as the channel.

After selecting the square wave voltammetry interface, the principle of "selecting collection" is the same as that of cyclic voltammetry. "Sequential collection" is done by setting the number of cycles, cycle interval time, cycle start electrode channel selection, cycle end electrode channel selection, touch screen The instructions are passed to the ARM processor through the USB interface, and the ARM processor controls the ADG1408YRUZ digital-to-analog converter to open the selected channels in turn according to the instructions and time intervals.

The present invention realizes cyclic voltammetry (CV) and square wave voltammetry (SWV) of electrochemical workstations with multi-channel control of chip electrodes by combining circuit and software operation, and introduces square wave voltammetry (SWV) by using the processing module 101. SWV) data are processed to achieve high-throughput acquisition and data processing functions of multi-channel chip electrodes. Secondly, the chip electrode connection module design provides a new detection method for high-throughput chip data collection.

It is important to note that the construction and arrangements of the present application shown in various exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in this disclosure, those reviewing this disclosure will readily appreciate that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application. are possible (e.g. variations in size, scale, structure, shape and proportion of various elements, as well as parameter values (e.g. temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.). For example, an element shown as integrally formed may be constructed from multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operation and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the invention is not limited to particular embodiments, but extends to various modifications which still fall within the scope of the appended claims.

Furthermore, in order to provide a concise description of the exemplary embodiments, not all features of an actual implementation may be described (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention, or that are not relevant to carrying out the invention) feature).

It is understood that numerous implementation-specific decisions may be made during the development of any actual implementation, as in any engineering or design project. Such a development effort might be complex and time consuming, but would be a routine undertaking of design, manufacture and production without undue experimentation to those of ordinary skill having the benefit of this disclosure .

It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solution of the present invention can be carried out. Modifications or equivalent substitutions without departing from the spirit and scope of the technical solution of the present invention shall be included in the scope of the claims of the present invention.

Claims (10)

1. A multi-channel detection circuit, characterized by: including, The data acquisition unit (100) includes a processing module (101), a channel selection module (102) and a first power supply module (103). The processing module (101) is connected to the channel selection module (102). The first power supply module The module (103) is connected to the processing module (101) and the channel selection module (102) respectively; The interactive unit (200) is connected to the processing module (101) and the first power module (103) respectively. 2. The multi-channel detection circuit of claim 1, wherein the channel selection module (102) includes a transimpedance preamplifier circuit (102a) and is connected to the transimpedance preamplifier circuit (102a). Potentiostatic circuit (102b); Wherein, the transimpedance preamplifier circuit (102a) and the constant potential circuit (102b) are respectively connected to the first power module (103). 3. The multi-channel detection circuit according to claim 2, characterized in that: the resistance network circuit (102a-1) of the transimpedance preamplifier circuit (102a) is connected to the processing module (101). 4. The multi-channel detection circuit according to claim 3, characterized in that: the transimpedance preamplifier circuit (102a) further includes a reference electrode test port (102a-2) and a counter electrode test port (102a-3 ); Wherein, the counter electrode test port (102a-3) is connected to the reference electrode test port (102a-2). 5. The multi-channel detection circuit according to claim 4, characterized in that: the interaction unit (200) includes a control module (201), a first USB interface (202) and a second power module (203), and the The control module (201) is respectively connected to the processing module (101) and the first power module (103) through the first USB interface (202). 6. A multi-channel detection device, characterized by: comprising the multi-channel detection circuit as claimed in claims 1 to 5; and, The carrying case (300) includes a chip electrode slot (301) and an installation slot (302), and the control module (201) is embedded in the installation slot (302); The chip electrode connection unit (400) includes a chip electrode connection circuit board (401) and electrode elastic pieces (402) and spring terminals (403) respectively connected to both sides of the chip electrode connection circuit board (401); Wherein, the reference electrode test port (102a-2), the counter electrode test port (102a-3) and the working motor port (102b-1) of the constant potential circuit (102b) are all connected to the spring-type terminals. (403) connection; Wherein, the electrode elastic piece (402) is embedded in the protective shell (404) of the chip electrode connection unit (400), and the chip electrode connection circuit board (401) and the spring terminal (403) are provided in In the protective housing (404), one end of the protective housing (404) is embedded and rotationally connected to the chip electrode slot (301). 7. The multi-channel detection device according to claim 6, characterized in that: there is an accommodation space provided in the carrying case (300); Wherein, the data collection unit (100) is arranged in the accommodation space. 8. The multi-channel detection device according to claim 7, characterized in that: a chip to be tested is provided in the chip electrode slot (301); Wherein, the electrode elastic piece (402) is connected to the chip to be tested. 9. A detection method using the multi-channel detection device according to any one of claims 6 to 8, characterized in that: it includes the following steps: Open the interactive unit (200) and set the collection test method; Connect the chip electrode connection unit (400) to the chip under test placed in the chip electrode card slot (301); Conduct four-stage life cycle testing of the chip under test to obtain and collect test data; The test data is collected and transmitted to the control module (201) to calculate the peak height and draw it into a peak height-cycle number graph. 10. The multi-channel detection method according to claim 8, wherein the four-stage life cycle includes a collection interface life cycle, a sensor interface life cycle, a curve interface life cycle and a historical quantity life cycle.