CN211327801U - Safety device of electromagnetic therapeutic apparatus - Google Patents
Safety device of electromagnetic therapeutic apparatus Download PDFInfo
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- CN211327801U CN211327801U CN201922134527.4U CN201922134527U CN211327801U CN 211327801 U CN211327801 U CN 211327801U CN 201922134527 U CN201922134527 U CN 201922134527U CN 211327801 U CN211327801 U CN 211327801U
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- operational amplifier
- temperature
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Abstract
The utility model discloses an electromagnetic therapeutic apparatus safety device, which comprises a controller, a microelement board capable of radiating electromagnetic waves and an electric heater for heating the microelement board, a temperature detection unit is arranged in the electric heater, the temperature detection unit comprises a temperature sensor, the detection signal of the temperature sensor is sent into an amplifying filter circuit to be processed and then sent into the controller, the amplifying filter circuit utilizes a resistance-capacitance feedback network to carry out closed-loop feedback on the output signal of an operational amplifier AR1, the signal amplification error is reduced, a pi-type LC filter is utilized to carry out filtering output on the output signal of the operational amplifier AR2, the interference of the electromagnetic waves on temperature monitoring is effectively eliminated, the accuracy of the temperature detection value received by the controller is greatly improved, when the temperature detection signal received by the controller is greater than a preset value, the controller drives a warning circuit to work, the electromagnetic waves remind that the irradiation temperature is too high, avoid scalding patients.
Description
Technical Field
The utility model relates to an electromagnetic therapy apparatus technical field especially relates to an electromagnetic therapy apparatus safety device.
Background
The electromagnetic wave therapeutic apparatus has the functions of promoting the body to absorb various deficient elements, repairing and dredging microcirculation channels; the immunity and disease resistance of the organism are stimulated; promoting the secretion of enkephalins, and achieving the purpose of continuous analgesia. The invention with application number of 201610307305.6 and patent name of 'electromagnetic wave therapeutic apparatus' is applied, heating modules are arranged at the forehead, the vertex, the back head scoop, the left and right hairline corners, the upper parts of the left and right ears and the like of the brain of a human body, and electromagnetic wave irradiation with multiple directions, the same time and the same intensity can be realized on the brain through the plurality of heating modules. In order to prevent the electromagnetic wave irradiation temperature from being too high, the temperature sensor is arranged in the electric heater to monitor the temperature of the heating module, but because the electromagnetic wave therapeutic apparatus generates a large amount of electromagnetic waves in the working process, great errors are brought to temperature monitoring, and potential safety hazards exist.
So the utility model provides a new scheme to solve the problem.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a safety device for an electromagnetic therapeutic apparatus.
The technical scheme for solving the problem is as follows: the utility model provides an electromagnetic therapeutic instrument safety device, includes controller, the microelement board that can radiate the electromagnetic wave and for the electric heater of microelement board heating, be provided with temperature detecting element in the electric heater, temperature detecting element includes temperature sensor, temperature sensor's detected signal is sent into and is sent into after handling in the amplifying and filtering circuit in the controller, and when the temperature detected signal that the controller was received was greater than the default, the work of controller drive warning circuit.
Preferably, the amplifying and filtering circuit comprises operational amplifiers AR1 and AR2, an inverting input terminal of the operational amplifier AR1 is connected with an output terminal of the temperature sensor through a resistor R1, and is grounded through a capacitor C1, the non-inverting input end of the operational amplifier AR1 is connected with a +5V power supply and the cathode of a voltage stabilizing diode DZ1, the output end of the operational amplifier AR1 is connected with the grid of the MOS tube Q1 and the non-inverting input end of the operational amplifier AR2 through a resistor R3, the output end of the operational amplifier AR2 is connected with the inverting input end of the operational amplifier AR2 through a resistor R5 and is connected with the temperature signal input end of the controller through a resistor R6.
Preferably, the warning circuit comprises a triode VT1, the base of the triode VT1 is connected with the output end of the controller and is grounded through a resistor R7 and a capacitor C5 which are connected in parallel, the collector of the triode VT1 is connected with a +5V power supply, and the emitter of the triode VT1 is grounded through a warning lamp DS 1.
Preferably, the controller is a single chip microcomputer.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the amplifying and filtering circuit performs closed-loop feedback on an output signal of the operational amplifier AR1 by using a resistance-capacitance feedback network, so that the signal amplification error is reduced;
2. the operational amplifier AR2 follows and amplifies the output signal of the operational amplifier AR1 by using the voltage follower principle, so that the stability of the output of the temperature detection signal is ensured;
3. the pi-type LC filter is used for filtering and outputting an output signal of the operational amplifier AR2, so that the interference of electromagnetic waves on temperature monitoring is effectively eliminated, and the accuracy of the temperature detection value received by the controller is greatly improved;
4. the utility model discloses a warning light DS1 sends red warning signal, reminds the electromagnetic wave irradiation temperature too high, avoids scalding the patient, and the controller can be according to the power of received temperature detection signal value regulation electric heater, guarantees that the electromagnetic wave irradiation temperature is in the safety range all the time, can guarantee the activity of microelement enzyme, can play fine guard action again.
Drawings
Fig. 1 is a schematic diagram of the amplifying filter circuit of the present invention.
Fig. 2 is a schematic diagram of the warning circuit 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 of the embodiments, which is to be read in connection with the accompanying drawings 1 to 2. 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.
A safety device of electromagnetic therapeutic apparatus is composed of controller, trace element plate able to radiate electromagnetic wave, and electric heater for heating trace element plate. In order to improve the accuracy of the temperature detection of the electric heater, a temperature detection unit is arranged in the electric heater and comprises a temperature sensor J1, a detection signal of the temperature sensor J1 is sent into the amplifying and filtering circuit to be processed and then sent into the controller, and when the temperature detection signal received by the controller is larger than a preset value, the controller drives the warning circuit to work.
As shown in fig. 1, the amplifying and filtering circuit includes operational amplifiers AR1, AR2, an inverting input terminal of the operational amplifier AR1 is connected to an output terminal of the temperature sensor J1 through a resistor R1, and is grounded through a capacitor C1, the non-inverting input end of the operational amplifier AR1 is connected with a +5V power supply and the cathode of a voltage stabilizing diode DZ1, the output end of the operational amplifier AR1 is connected with the grid of the MOS tube Q1 and the non-inverting input end of the operational amplifier AR2 through a resistor R3, the output end of the operational amplifier AR2 is connected with the inverting input end of the operational amplifier AR2 through a resistor R5 and is connected with the temperature signal input end of the controller through a resistor R6.
The specific working principle of the amplifying and filtering circuit is as follows: an RC filter formed by a resistor R1 and a capacitor C1 firstly carries out low-pass filtering on an output signal of the temperature sensor J1, and eliminates the interference of a spike clutter signal on temperature detection. The detection signal after RC filtering is sent to the operational amplifier AR1 for amplification, in the amplification process of the operational amplifier AR1, a +5V power supply is used as a reference power supply and is arranged at the non-inverting input end of the operational amplifier AR1 to play a reference role in the amplification of the detection signal, the resistor R2 and the capacitor C2 form a resistance-capacitance feedback network to perform closed-loop feedback on the output signal of the operational amplifier AR1, and the signal amplification error is reduced. The operational amplifier AR2 utilizes the voltage follower principle to follow and amplify the output signal of the operational amplifier AR1, and the stability of the temperature detection signal output is ensured. When the operational amplifier AR2 processes, the inductor L1 and the capacitors C3 and C4 form a pi-type LC filter to filter and output the output signal of the operational amplifier AR2, so that the interference of electromagnetic waves on temperature monitoring is effectively eliminated, and the accuracy of the temperature detection value received by the controller is greatly improved.
As shown in fig. 2, the warning circuit includes a transistor VT1, the base of the transistor VT1 is connected to the output terminal of the controller and is grounded through a resistor R7 and a capacitor C5 which are connected in parallel, the collector of the transistor VT1 is connected to a +5V power supply, and the emitter of the transistor VT1 is grounded through a warning lamp DS 1.
The utility model discloses when specifically using, carry out real-time detection through temperature sensor to the heating temperature of microelement board, and design and enlarge filter circuit and handle temperature detect signal, effectively eliminate the interference that the electromagnetic wave brought temperature monitoring, improve the temperature detection accuracy, the controller compares the temperature detect signal value received with the default, when the detected value is greater than the default, the output high level signal of controller, drive triode VT1 base turns on with the electricity, thereby make warning light DS1 turn on with the electricity and send red warning signal, remind the electromagnetic wave irradiation temperature too high, avoid scalding the patient. Meanwhile, the controller can adjust the power of the electric heater according to the received temperature detection signal value, ensure that the irradiation temperature of the electromagnetic waves is always in a safe range, ensure the activity of the trace element enzyme and play a good role in protection.
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. The utility model provides an electromagnetic therapeutic instrument safety device, includes controller, the microelement board that can radiate the electromagnetic wave and for the electric heater of microelement board heating, be provided with temperature detecting element, its characterized in that in the electric heater: the temperature detection unit comprises a temperature sensor, a detection signal of the temperature sensor is sent into the amplifying and filtering circuit to be processed and then sent into the controller, and when the temperature detection signal received by the controller is larger than a preset value, the controller drives the warning circuit to work.
2. The therapeutic electromagnetic treatment device safety apparatus of claim 1, wherein: the amplifying and filtering circuit comprises operational amplifiers AR1 and AR2, the inverting input end of the operational amplifier AR1 is connected with the output end of the temperature sensor through a resistor R1, and is grounded through a capacitor C1, the non-inverting input end of the operational amplifier AR1 is connected with a +5V power supply and the cathode of a voltage stabilizing diode DZ1, the output end of the operational amplifier AR1 is connected with the grid of the MOS tube Q1 and the non-inverting input end of the operational amplifier AR2 through a resistor R3, the output end of the operational amplifier AR2 is connected with the inverting input end of the operational amplifier AR2 through a resistor R5 and is connected with the temperature signal input end of the controller through a resistor R6.
3. The therapeutic electromagnetic treatment device safety apparatus of claim 2, wherein: the warning circuit comprises a triode VT1, the base electrode of the triode VT1 is connected with the output end of the controller and is grounded through a resistor R7 and a capacitor C5 which are connected in parallel, the collector electrode of the triode VT1 is connected with a +5V power supply, and the emitter electrode of the triode VT1 is grounded through a warning lamp DS 1.
4. The therapeutic electromagnetic treatment device safety apparatus of claim 3, wherein: the controller is a single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922134527.4U CN211327801U (en) | 2019-12-03 | 2019-12-03 | Safety device of electromagnetic therapeutic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922134527.4U CN211327801U (en) | 2019-12-03 | 2019-12-03 | Safety device of electromagnetic therapeutic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211327801U true CN211327801U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922134527.4U Expired - Fee Related CN211327801U (en) | 2019-12-03 | 2019-12-03 | Safety device of electromagnetic therapeutic apparatus |
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| Country | Link |
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| CN (1) | CN211327801U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115016569A (en) * | 2022-06-21 | 2022-09-06 | 中维化纤股份有限公司 | Nylon polymerization cauldron temperature control system |
-
2019
- 2019-12-03 CN CN201922134527.4U patent/CN211327801U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115016569A (en) * | 2022-06-21 | 2022-09-06 | 中维化纤股份有限公司 | Nylon polymerization cauldron temperature control system |
| CN115016569B (en) * | 2022-06-21 | 2024-02-20 | 中维化纤股份有限公司 | Nylon polymerization reaction kettle temperature control system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200825 Termination date: 20211203 |