CN212747292U - Experimental apparatus drying cabinet for cell engineering - Google Patents
Experimental apparatus drying cabinet for cell engineering Download PDFInfo
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- CN212747292U CN212747292U CN202021431881.XU CN202021431881U CN212747292U CN 212747292 U CN212747292 U CN 212747292U CN 202021431881 U CN202021431881 U CN 202021431881U CN 212747292 U CN212747292 U CN 212747292U
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Abstract
The utility model discloses an experimental apparatus drying cabinet for cell engineering, the power distribution box comprises a box body, set up drying device and temperature and humidity monitoring device in the box, temperature and humidity monitoring device is including setting up the temperature and humidity sensor on the box inner wall, temperature and humidity sensor's detected signal is after amplifying and making an uproar circuit and signal stabilization circuit processing, the invasion of external high frequency clutter signal has greatly been reduced, the detecting error of reduction system, show the precision that promotes temperature and humidity measurement, signal stabilization circuit's output signal becomes the real-time humiture data of calculating in sending into the controller after the digital quantity after the AD conversion, and stop drying device work after humiture data reaches the drying requirement, thereby make the drying process more even thoroughly, be favorable to promoting the accuracy of experimental result.
Description
Technical Field
The utility model relates to a cell engineering technical field especially relates to laboratory appliance drying cabinet for cell engineering.
Background
In the cell engineering experiment, maintaining the cell used for the experiment in a sterile environment is an important index for performing the cell biology experiment, and before performing the cell biology experiment, a container such as a culture dish, a culture bottle and the like for holding the experimental cell needs to be dried and sterilized. Because the drying cabinet internal environment is complicated and difficult to observe in the use, therefore has the problem of dry inhomogeneous, not thorough to cause the adverse effect to the accuracy of experimental result.
SUMMERY OF THE UTILITY MODEL
To the above situation, in order to overcome the defects of the prior art, the present invention is directed to a drying box for an experimental device for cell engineering.
The technical scheme for solving the problem is as follows: drying cabinet for laboratory glassware for cell engineering, including the box, set up drying device and temperature and humidity monitoring devices in the box, temperature and humidity monitoring devices is including setting up the temperature and humidity sensor on the box inner wall, temperature and humidity sensor's detected signal is through enlargiing to fall circuit and signal stabilization circuit processing back of making an uproar, send into the controller after the analog to digital conversion with the detected signal by the AD converter, the controller is used for control drying equipment's operating condition.
Preferably, the amplification noise reduction circuit comprises a capacitor C1, one end of a capacitor C1 is connected to a signal output end of the temperature and humidity sensor, the other end of a capacitor C1 is connected to one end of a resistor R1 and a base of a triode VT1, a collector of a triode VT1 is connected to the other end of a resistor R1 and a +5V power supply through a parallel inductor L1 and a capacitor C2, and is connected to an inverting input end of an operational amplifier AR1 through a resistor R3, an emitter of the triode VT1 is connected to a non-inverting input end of the operational amplifier AR1, and is grounded through a parallel resistor R2 and a capacitor C3, and an output end of the operational amplifier AR1 is connected to the inverting input end of the operational amplifier AR1 through a parallel resistor R4 and a capacitor.
Preferably, the signal stabilizing circuit comprises an inductor L2, one end of the inductor L2 is connected to one end of a capacitor C5 and is connected to the output end of the operational amplifier AR1 through a resistor R5, the other end of the inductor L2 is connected to the cathode of a zener diode DZ1 and one end of a resistor R6, the other end of the capacitor C5 and the anode of a zener diode DZ1 are grounded through a resistor R7, and the other end of the resistor R6 is connected to the a/D converter and is grounded through a capacitor C6.
Preferably, the drying device is an ultraviolet drying lamp.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a humiture sensor real-time detection drying cabinet is inside humiture, and its detected signal sends into at first and amplifies the triode and fall the noise circuit and carry out the triode amplification, forms LC filtering and falls the noise to the detected signal in the amplification process, has greatly reduced the invasion of external high frequency clutter signal, then utilizes fortune to put the feedback principle and further amplify the opsonization to the detected signal, has improved the detected signal output waveform, reduces system detection error;
2. the signal stabilizing circuit forms LC-RC combined filtering to play a good role in filtering noise interference in the system, the precision of temperature and humidity detection is obviously improved, the drying process is more uniform and thorough, and the accuracy of an experimental result is favorably improved.
Drawings
Fig. 1 is the circuit schematic diagram of the temperature and humidity monitoring device of the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description taken in conjunction with the accompanying fig. 1. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Laboratory appliance drying cabinet for cell engineering, including the box, set up drying device and temperature and humidity monitoring devices in the box, temperature and humidity monitoring devices is including setting up the temperature and humidity sensor on the box inner wall, and temperature and humidity sensor's detected signal is through enlargiing and falling circuit and signal stabilization circuit processing back of making an uproar, send into the controller after converting detected signal into the digital quantity by the AD converter, and the controller is used for controlling drying equipment's operating condition, and drying device is the ultraviolet ray drying lamp.
In the working process of the drying oven, the temperature and humidity sensor detects the temperature and humidity inside the drying oven in real time, and specifically can adopt a temperature and humidity module with the model of AMT 1001. In order to improve the detection accuracy of the temperature and humidity sensor, firstly, an amplifying and noise reducing circuit is adopted to process the detection signal of the temperature and humidity sensor. As shown in fig. 1, the amplification noise reduction circuit includes a capacitor C1, one end of a capacitor C1 is connected to a signal output end of the temperature and humidity sensor, the other end of a capacitor C1 is connected to one end of a resistor R1 and a base of a transistor VT1, a collector of a transistor VT1 is connected to the other end of a resistor R1 and a +5V power supply through a parallel inductor L1 and a capacitor C2, and is connected to an inverting input end of an operational amplifier AR1 through a resistor R3, an emitter of a transistor VT1 is connected to a non-inverting input end of an operational amplifier AR1, and is grounded through a parallel resistor R2 and a capacitor C3, and an output end of the operational amplifier AR1 is connected to the inverting input end of the operational amplifier AR1 through a parallel resistor R.
Detection signals of the temperature and humidity sensor are coupled by a capacitor C1 and then are sent into a triode VT1 to be amplified, a +5V power supply biases input signals of the triode VT1 through a resistor R1, then the triode VT1 amplifies the detection signals by using a common emitter amplification principle, LC filtering is formed by an inductor L1 and a capacitor C2 in the amplification process to reduce noise of the detection signals, the intrusion of external high-frequency clutter signals is greatly reduced, and meanwhile, an RC device formed by the resistor R2 and the capacitor C3 also plays a stabilizing role in amplifying output signals of the triode VT 1. The output signal of the triode VT1 is sent to the operational amplifier AR1 for operational amplifier processing, and the capacitor C4 and the resistor R4 form resistance-capacitance phase compensation at the feedback end of the operational amplifier AR1, thereby well improving the output waveform of the detection signal and reducing the detection error of the system.
The signal stabilizing circuit comprises an inductor L2, one end of the inductor L2 is connected with one end of a capacitor C5 and is connected with the output end of an operational amplifier AR1 through a resistor R5, the other end of the inductor L2 is connected with the cathode of a voltage stabilizing diode DZ1 and one end of a resistor R6, the other end of the capacitor C5 and the anode of a voltage stabilizing diode DZ1 are grounded through a resistor R7, and the other end of the resistor R6 is connected with the A/D converter and is grounded through a capacitor C6. The resistors R5 and R6, the capacitors C5 and C6 and the inductor L2 form LC-RC combined filtering, noise interference in a system is well filtered, and the temperature and humidity detection precision is remarkably improved. The voltage stabilizing diode DZ1 plays an amplitude stabilizing role in the filtering process of the detection signal, and the stability of the detection signal in the A/D conversion process is ensured.
The utility model discloses when specifically using, the inside humiture of temperature and humidity sensor real-time detection drying cabinet, its detected signal at first send into to enlarge and fall to make an uproar and carry out the triode in the circuit of making an uproar and enlarge, form LC filtering in the amplification process and fall the noise to the detected signal, greatly reduced the invasion of external high frequency clutter signal, then utilize fortune to put the feedback principle and further enlarge the opsonization to the detected signal, improved detected signal output waveform, reduce system detection error. The signal stabilizing circuit forms LC-RC combined filtering to play a good role in filtering noise interference in the system, and the precision of temperature and humidity detection is obviously improved. The output signal of the signal stabilizing circuit is converted into digital quantity through A/D conversion and then sent into the controller to be calculated to obtain real-time temperature and humidity data, and the drying device stops working after the temperature and humidity data meet the drying requirement, so that the drying process is more uniform and thorough, and the accuracy of the experimental result is favorably improved.
The above description is provided for further details of the present invention with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical personnel are based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the protection scope.
Claims (4)
1. Experimental apparatus drying cabinet for cell engineering, including the box, set up drying device and temperature and humidity monitoring devices, its characterized in that in the box: the temperature and humidity monitoring device comprises a temperature and humidity sensor arranged on the inner wall of the box body, detection signals of the temperature and humidity sensor are processed by an amplification noise reduction circuit and a signal stabilization circuit, the detection signals are converted into digital values by an A/D converter and then are sent into the controller, and the controller is used for controlling the working state of the drying device.
2. The drying box for laboratory tools for cell engineering according to claim 1, wherein: the amplifying and noise reducing circuit comprises a capacitor C1, one end of a capacitor C1 is connected with a signal output end of the temperature and humidity sensor, the other end of a capacitor C1 is connected with one end of a resistor R1 and a base electrode of a triode VT1, a collector electrode of the triode VT1 is connected with the other end of the resistor R1 and a +5V power supply through a parallel inductor L1 and a capacitor C2, the collector electrode of the triode VT1 is connected with an inverting input end of an operational amplifier AR1 through a resistor R3, an emitter electrode of the triode VT1 is connected with an non-inverting input end of the operational amplifier AR1, the emitter electrode of the operational amplifier VT1 is grounded through a parallel resistor R2 and a capacitor C3, and an output end of the operational amplifier AR1 is connected.
3. The drying box for laboratory tools for cell engineering according to claim 2, wherein: the signal stabilizing circuit comprises an inductor L2, one end of an inductor L2 is connected with one end of a capacitor C5 and is connected with the output end of an operational amplifier AR1 through a resistor R5, the other end of the inductor L2 is connected with the cathode of a voltage stabilizing diode DZ1 and one end of a resistor R6, the other end of the capacitor C5 and the anode of a voltage stabilizing diode DZ1 are grounded through a resistor R7, and the other end of a resistor R6 is connected with the A/D converter and is grounded through a capacitor C6.
4. The drying box for laboratory tools for cell engineering according to claim 1 or 3, wherein: the drying device is an ultraviolet drying lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021431881.XU CN212747292U (en) | 2020-07-20 | 2020-07-20 | Experimental apparatus drying cabinet for cell engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021431881.XU CN212747292U (en) | 2020-07-20 | 2020-07-20 | Experimental apparatus drying cabinet for cell engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212747292U true CN212747292U (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021431881.XU Active CN212747292U (en) | 2020-07-20 | 2020-07-20 | Experimental apparatus drying cabinet for cell engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212747292U (en) |
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2020
- 2020-07-20 CN CN202021431881.XU patent/CN212747292U/en active Active
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