Extended gate field effect transistor photoelectrochemical sensor detection device

Abstract

The utility model relates to the technical field of photoelectrochemical detection devices, in particular to an extended gate field effect transistor photoelectrochemical sensor detection device which comprises a workbench, a mounting rack is fixed on one side of the workbench, an adjusting assembly is arranged on the mounting rack, and a movable end of the adjusting assembly is connected with an excitation light source; a containing cup is fixed to the side, away from the mounting frame, of the workbench, an L-shaped mounting arm is fixedly mounted on the upper side of the containing cup, a lifting assembly moving in the vertical direction is arranged on the L-shaped mounting arm, and the lifting end of the lifting assembly is connected with a working electrode. In the detection process or the contrast test process, the unity of external conditions can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to photoelectrochemical detection device technical field, especially, it relates to a kind of extension gate field effect transistor photoelectrochemical sensor detection device. BACKGROUND

[0002] In the case of the rapid development of analytical science and technology nowadays, there is an increasing need in real life for analytical devices that can respond quickly and adapt to various conditions. Photoelectrochemical sensing is more sensitive than the past electrochemical analysis method because it contains different energy forms of excitation light source and detection signal. Because photoelectrochemical sensing is based on the strong redox ability of electron-hole pairs, it is independent of the applied potential, so photoelectrochemical sensing often has better detection limit and sensitivity than electrochemical sensing.

[0003] When performing photoelectrochemical sensor detection experiments, the working electrode of the transistor extension gate of the detection system needs to be connected to the sensitive material plate, and the working electrode and the counter electrode are inserted into the solution to be detected. During this process, the system collects the current change of the working electrode, which is used as a key indicator of the experiment.

[0004] In the prior art, ultraviolet light is generally used as the excitation light source during the experiment. During operation, the working electrode and the counter electrode are directly placed in a container containing the detection solution, and then the experimental personnel manually control the excitation light source to irradiate. This method cannot accurately maintain or limit the external conditions of the experiment, so a kind of extension gate field effect transistor photoelectrochemical sensor detection device is needed to perform detection experiments. SUMMARY

[0005] (I) Technical problem solved

[0006] To overcome the shortcomings of the prior art, the utility model provides an extension gate field effect transistor photoelectrochemical sensor detection device, which can ensure the uniformity of external conditions during detection or during comparative experiments.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the application provides an extension gate field effect transistor photoelectrochemical sensor detection device, which comprises a workbench, a mounting bracket is fixed on one side of the workbench, an adjusting assembly is arranged on the mounting bracket, and a excitation light source is connected to the moving end of the adjusting assembly; a holding cup is fixed on the workbench and located away from the mounting bracket, an L-shaped mounting arm is fixedly installed on the upper side of the holding cup, a lifting assembly that moves in the vertical direction is arranged on the L-shaped mounting arm, and a working electrode is connected to the lifting end of the lifting assembly.

[0009] Preferably, the mounting frame is L-shaped, comprising a vertically arranged support arm and a horizontally arranged adjusting arm; a support shaft is fixed at the top end of the support arm, an adjusting hole is formed at one end of the adjusting arm close to the support arm, the support shaft passes through the adjusting hole, and a locking knob is threadedly connected to the support arm, and the locking knob is tightened against the adjusting arm.

[0010] Preferably, a long slot is formed along the length direction of the adjusting arm, limit slots are formed at both sides of the long slot, the adjusting assembly comprises a guide block which is slidingly installed in the long slot, both ends of the guide block are embedded in the limit slots, a guide cylinder is integrally formed at the lower side of the guide block, a guide hole with a rectangular cross section is formed in the guide cylinder, a guide rod is slidingly installed in the guide hole in the vertical direction, the guide rod has a rectangular cross section, an excitation light source is fixedly installed at the lower end of the guide rod, a threaded hole is formed at the end of the guide rod away from the excitation light source, a lifting screw is rotatably connected to the guide block, the lifting screw comprises an installation section and a threaded lifting section, the installation section is rotatably connected to the guide block, the threaded lifting section is located in the guide hole and is threadedly connected to the threaded hole, and an operation knob is installed at the upper end of the lifting screw.

[0011] Preferably, a first abutting screw is threadedly connected to the adjusting arm at a position close to the limit slot, the lower end of the first abutting screw is located in the limit slot and can abut against the guide block.

[0012] Preferably, the horizontal end of the L-shaped mounting arm is located directly above the containing cup, a through mounting opening is formed in the horizontal end of the L-shaped mounting arm, the lifting assembly comprises a vertical support column which passes through the mounting opening, a second abutting screw is threadedly connected to the L-shaped mounting arm, one end of the second abutting screw is located in the mounting opening and can abut against the vertical support column when tightened, the end of the vertical support column close to the containing cup is the lifting end, a fixing assembly is arranged at the lifting end, and the fixing assembly is connected to the working electrode.

[0013] Preferably, the fixing assembly comprises a back plate fixed to the lifting end, a first clamping plate and a second clamping plate which are both L-shaped are arranged on the back plate in a spaced manner, a plurality of suction cups are fixed to the side face of the first clamping plate and the second clamping plate close to the back plate in a spaced manner, and the suction cups can be adsorbed to the back plate; a wiring terminal is arranged on the side face of the first clamping plate or the second clamping plate close to each other, and is used for being connected to a sensitive material plate to be held.

[0014] Preferably, steps are arranged along the length direction of the first clamping plate and the second clamping plate, and the steps and the back plate form an installation slot.

[0015] (III) beneficial effects

[0016] The utility model provides a kind of extended gate field effect transistor photoelectrochemical sensor detection device, by being provided with mounting bracket, adjusting assembly and lifting assembly on mounting bracket upside, fixed component, when needing to carry out detection work, by adjusting assembly fixed excitation light source, by L-shaped mounting arm and lifting assembly fixed working electrode.In detection process, or in the process of comparative test, the unity of external condition can be guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural diagram of the utility model;

[0018] Figure 2 It is the sectional view of support arm;

[0019] Figure 3 It is the sectional view of adjusting assembly;

[0020] Figure 4 It is the sectional view of protruding guide block and adjusting arm connecting structure;

[0021] Figure 5 It is the schematic diagram of protruding lifting assembly;

[0022] Figure 6 It is the front view of protruding fixed component;

[0023] Figure 7 It is the circuit diagram of control circuit.

[0024] Markings in the drawings:

[0025] 100, workbench;200, mounting bracket;210, support arm;220, adjusting arm;221, long slot;222, limit slot;230, support shaft;240, locking knob;300, adjusting assembly;310, guide block;320, guide cylinder;321, guide hole;330, guide rod;331, screw hole;340, lifting screw;341, mounting section;342, screw lifting section;343, operation knob;350, first abutting screw;400, excitation light source;500, containing cup;600, L-shaped mounting arm;610, mounting port;700, lifting assembly;710, vertical support column;711, lifting end;720, second abutting screw;800, fixed component;810, back plate;820, first clamping plate;830, second clamping plate;840, suction cup;900, working electrode;

[0026] a, working electrode;B, butt joint electrode;C, drain;D, source;E, circuit signal acquisition module;F, circuit DAC1 voltage output;G, circuit positive voltage to negative voltage module. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] Embodiment

[0029] The utility model provides a kind of extension gate field effect transistor photoelectrochemical sensor detection device, refer to Figures 1-6 Including workbench 100, mounting bracket 200 is fixed in the side of workbench 100, adjusting assembly 300 is provided on mounting bracket 200, the moving end of adjusting assembly 300 is connected with excitation light source 400;Workbench 100 and located on the side away from mounting bracket 200 is fixed with holding cup 500, holding cup 500 upper side is fixedly installed with L-shaped mounting arm 600, lifting assembly 700 that moves along vertical direction is provided on L-shaped mounting arm 600, the lifting end 711 of lifting assembly 700 is connected working electrode 900.When needing to carry out detection work, by adjusting assembly 300 fixed excitation light source 400, by L-shaped mounting arm 600 and lifting assembly 700 fixed working electrode 900.In detection process, or in the process of comparative test, the uniformity of external condition can be guaranteed.

[0030] Specifically, mounting bracket 200 is L-shaped, including vertically arranged support arm 210 and horizontally arranged adjusting arm 220.

[0031] Support arm 210 top end is fixed with support shaft 230, adjusting arm 220 is close to the end of support arm 210 and is provided with adjusting hole, support shaft 230 passes through adjusting hole, locking knob 240 is threadedly connected on support arm 210, locking knob 240 is tightened and abuts against adjusting arm 220.By the locking knob 240 set, in use, the illumination angle of excitation light source 400 can be adjusted.

[0032] Adjusting arm 220 is provided with long slot 221 along the length direction, and limit slot 222 is provided on both sides in long slot 221.

[0033] Adjusting assembly 300 includes guide block 310, guide block 310 is slidably installed in long slot 221, both ends of guide block 310 are respectively embedded in limit slot 222, guide cylinder 320 is integrally formed on the lower side of guide block 310.

[0034] The guide cylinder 320 is internally formed with a guide hole 321 in a rectangular cross section; the guide hole 321 is internally slidably mounted with a guide rod 330 in a vertical direction, the guide rod 330 is in a rectangular cross section, and the lower end of the guide rod 330 is fixedly mounted with an excitation light source 400; the end of the guide rod 330 away from the excitation light source 400 is provided with a threaded hole 331; and the guide block 310 is rotatably connected with a lifting screw 340.

[0035] The lifting screw 340 comprises a mounting section 341 and a threaded lifting section 342, wherein the mounting section 341 is rotatably connected with the guide block 310, the threaded lifting section 342 is located in the guide hole 321 and is threadedly connected with the threaded hole 331; and the upper end of the lifting screw 340 is fixedly mounted with an operating knob 343.

[0036] In work, the guide rod 330 is controlled to move in a vertical direction by the lifting screw 340, so as to adjust the vertical position of the excitation light source 400; and the horizontal position of the excitation light source 400 is controlled by the sliding guide block 310, so as to control the position of the excitation light source 400 according to experimental requirements.

[0037] A first abutting screw rod 350 is threadedly connected to the adjusting arm 220 at a position close to the limiting groove 222, the lower end of the first abutting screw rod 350 is located in the limiting groove 222 and can abut against the guide block 310.

[0038] The horizontal end of the L-shaped mounting arm 600 is located directly above the containing cup 500, and a through mounting opening 610 is formed in the horizontal end of the L-shaped mounting arm 600.

[0039] The lifting assembly 700 comprises a vertical support column 710 which passes through the mounting opening 610, and a second abutting screw rod 720 is threadedly connected to the L-shaped mounting arm 600, one end of the second abutting screw rod 720 is located in the mounting opening 610 and can abut against the vertical support column 710 when tightened.

[0040] One end of the vertical support column 710 close to the containing cup 500 is a lifting end 711, and a fixing assembly 800 is arranged on the lifting end 711, and the fixing assembly 800 is connected with a working electrode 900.

[0041] The fixing assembly 800 comprises a back plate 810 fixed to the lifting end 711, and a first clamping plate 820 and a second clamping plate 830 in an L shape are arranged on the back plate 810, a plurality of suction cups 840 are fixedly arranged on the side of the first clamping plate 820 and the second clamping plate 830 close to the back plate 810, and the suction cups 840 can be adsorbed to the back plate 810.

[0042] The first clamping plate 820 or the second clamping plate 830 is provided with a wiring terminal on one side close to each other, which is used for connecting with the sensitive material plate to be clamped. The wiring terminal and the sensitive material plate 910 form the working electrode 900.

[0043] Specifically, the first clamping plate 820 and the second clamping plate 830 are provided with steps along the length direction, and the steps and the back plate 810 form the mounting groove. During installation, the mounting groove is used for limiting and fixing the sensitive material plate.

[0044] The workbench is also provided with a control circuit, wherein the control circuit can adopt a circuit in the prior art, and is not limited, and can also be a control circuit as shown in the specification. Figure 7 The control circuit is used for detection, and signal transmission is realized through wireless communication or Bluetooth communication to a computer end or a mobile phone end.

[0045] The control circuit is as shown in the specification. Figure 7 The main control chip adopts an STM32F103RCT6 chip. The Bluetooth module and the WiFi module are used to realize wireless communication between the sensor detection system and a mobile phone or a computer, realize real-time wireless transmission of data, so that the detection result can be obtained in time and data analysis and processing can be realized.

[0046] In the description of the utility model, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0048] The above-described embodiments only express the implementation manners of the present application, and the description is relatively specific and detailed, but cannot be understood as the limitation of the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A detection device for an extended gate field-effect transistor photoelectrochemical sensor, characterized in that: Includes a workbench (100), a mounting bracket (200) is fixed on one side of the workbench (100), an adjustment component (300) is provided on the mounting bracket (200), and an excitation light source (400) is connected to the movable end of the adjustment component (300). A holding cup (500) is fixed on the workbench (100) and on the side away from the mounting bracket (200). An L-shaped mounting arm (600) is fixedly installed on the upper side of the holding cup (500). A lifting assembly (700) that moves in the vertical direction is provided on the L-shaped mounting arm (600). The lifting end (711) of the lifting assembly (700) is connected to the working electrode (900).

2. The extended gate field-effect transistor photoelectrochemical sensor detection device according to claim 1, characterized in that: The mounting bracket (200) is L-shaped and includes a vertically arranged support arm (210) and a horizontally arranged adjustment arm (220). The support arm (210) has a support shaft (230) fixed at its top end. The adjusting arm (220) has an adjusting hole at one end near the support arm (210). The support shaft (230) passes through the adjusting hole. A locking knob (240) is threaded onto the support arm (210). When the locking knob (240) is tightened, it presses against the adjusting arm (220).

3. The extended gate field-effect transistor photoelectrochemical sensor detection device according to claim 2, characterized in that: The adjusting arm (220) has a long groove (221) along its length, and limit grooves (222) are respectively opened on both sides of the long groove (221). The adjustment component (300) includes a guide block (310), which is slidably installed in the long groove (221), and the two ends of the guide block (310) are respectively fitted into the limiting groove (222); The guide block (310) has an integrally formed guide cylinder (320) on its lower side, and a guide hole (321) with a rectangular cross-section is formed inside the guide cylinder (320). A guide rod (330) is slidably installed in the guide hole (321) along the vertical direction. The guide rod (330) has a rectangular cross-section. An excitation light source (400) is fixedly installed at the lower end of the guide rod (330). A threaded hole (331) is provided at the end of the guide rod (330) away from the excitation light source (400). A lifting screw (340) is rotatably connected to the guide block (310). The lifting screw (340) includes an installation section (341) and a threaded lifting section (342). The mounting section (341) is rotatably connected to the guide block (310), and the threaded lifting section (342) is located inside the guide hole (321) and is threadedly connected to the threaded hole (331). An operating knob (343) is installed on the upper end of the lifting screw (340).

4. The extended gate field-effect transistor photoelectrochemical sensor detection device according to claim 3, characterized in that: A first abutting screw (350) is threadedly connected to the adjusting arm (220) and located near the limiting groove (222). The lower end of the first abutting screw (350) is located in the limiting groove (222) and can abut against the guide block (310).

5. The extended gate field-effect transistor photoelectrochemical sensor detection device according to claim 1, characterized in that: The horizontal end of the L-shaped mounting arm (600) is located directly above the container (500), and a through mounting port (610) is provided on the horizontal end of the L-shaped mounting arm (600). The lifting assembly (700) includes a vertical support column (710) that passes through the mounting port (610). A second abutting screw (720) is threaded onto the L-shaped mounting arm (600). One end of the second abutting screw (720) is located inside the mounting port (610) and can abut against the vertical support column (710) when tightened. The end of the vertical support column (710) near the container (500) is the lifting end (711), and a fixing component (800) is provided on the lifting end (711). The fixing component (800) is connected to the working electrode (900).

6. The extended gate field-effect transistor photoelectrochemical sensor detection device according to claim 5, characterized in that: The fixing component (800) includes a back plate (810) fixed to the lifting end (711). A first snap-fit ​​plate (820) and a second snap-fit ​​plate (830), both L-shaped, are provided at intervals on the back plate (810). The first snap-fit ​​plate (820) and the second snap-fit ​​plate (830) have multiple suction cups (840) fixed at intervals on one side near the back plate (810), and the suction cups (840) can be attached to the back plate (810); The first snap-fit ​​plate (820) or the second snap-fit ​​plate (830) has a wiring terminal on one side close to each other for connecting to the sensitive material plate to be reinforced.

7. The extended gate field-effect transistor photoelectrochemical sensor detection device according to claim 6, characterized in that: The first snap-fit ​​plate (820) and the second snap-fit ​​plate (830) are both provided with steps along the length direction, and the steps and the back plate (810) together form an installation groove.

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