Refrigeration seat ring circuit

Abstract

The utility model discloses a refrigeration seat ring circuit. A main control unit U2; the key unit is connected with the main control unit U2 so as to switch a refrigeration mode; the positive electrode of the temperature probe terminal J3 receives a voltage, and the negative electrode of the temperature probe terminal J3 is connected with the acquisition end of the main control unit U2; the positive electrode of the refrigeration sheet terminal J4 receives a voltage, the negative electrode of the refrigeration sheet terminal J4 is connected with the source electrode of the MOS tube Q1, the drain electrode of the refrigeration sheet terminal J4 is grounded, and the grid electrode is connected with the main control unit U2; the positive electrode of the fan terminal J5 receives a voltage, the negative electrode of the fan terminal J5 is connected with the source electrode of the MOS tube Q2, the drain electrode of the fan terminal J5 is grounded, and the grid electrode of the fan terminal J5 is connected with the main control unit U2. And then the main control unit U2 sends signals to the refrigeration sheet and the fan through the refrigeration sheet terminal J4 and the fan terminal J5 to drive the refrigeration sheet and the fan to work, so that refrigeration is realized, and the problem that the high temperature is not suitable in summer is solved for a user.

Description

Technical Field

[0001] The utility model relates to the field of refrigerated toilet seats, and particularly to a refrigerated seat circuit. Background Art

[0002] At present, toilets on the market do not have a refrigeration function, and there is generally no air conditioner in the toilet. The temperature is very high in summer, which causes discomfort to users and reduces the experience. Content of the Utility Model

[0003] To solve the above problems, the present technical solution provides a refrigerated seat circuit.

[0004] To achieve the above object, the present technical solution is as follows:

[0005] A refrigerated seat circuit, comprising:

[0006] A main control unit U2;

[0007] A key unit, connected to the main control unit U2 to switch the refrigeration mode;

[0008] A temperature probe terminal J3, whose positive electrode receives a voltage, and whose negative electrode is connected to the acquisition terminal of the main control unit U2;

[0009] A thermoelectric cooler terminal J4, whose positive electrode receives a voltage, whose negative electrode is connected to the source electrode of a MOS transistor Q1, whose drain electrode is grounded, and whose gate electrode is connected to the main control unit U2;

[0010] A fan terminal J5, whose positive electrode receives a voltage, whose negative electrode is connected to the source electrode of a MOS transistor Q2, whose drain electrode is grounded, and whose gate electrode is connected to the main control unit U2.

[0011] In some embodiments, it further includes an operational amplifier unit U3A, whose inverting terminal is connected to the temperature probe terminal J3, whose non-inverting terminal receives a voltage through a resistor R7, and whose output terminal is connected to the gate electrode of the MOS transistor Q1 through a diode D2;

[0012] It further includes an operational amplifier unit U3B, whose non-inverting terminal is connected to the main control unit U2 through a diode D4, whose inverting terminal receives a voltage through a resistor R9, and whose output terminal is also connected to the gate electrode of the MOS transistor Q1 through a diode D5.

[0013] In some embodiments, the gate electrode of the MOS transistor Q2 is further grounded through a resistor R13, and this gate electrode is also connected to the main control unit U2 through a resistor R11.

[0014] In some embodiments, the gate electrode of the MOS transistor Q1 is grounded through a resistor R8 and a capacitor C10 respectively.

[0015] In some embodiments, the drain of the MOS transistor Q2 is grounded through a resistor R14, a resistor R15, and a capacitor C12 respectively.

[0016] In some embodiments, the negative pole of the temperature probe terminal J3 is grounded through a resistor R2 and a capacitor C5 respectively, and a resistor R1 is provided between the resistor R2 and the capacitor C5.

[0017] The beneficial effects of this application are as follows:

[0018] This application is additionally provided with a temperature probe terminal J3 for connecting a temperature sensor, which is used to detect the current temperature in real time, and then feedback to the main control unit U2. Subsequently, the main control unit U2 sends signals to the thermoelectric cooler and the fan through the thermoelectric cooler terminal J4 and the fan terminal J5 to drive them to work, thereby achieving refrigeration and solving the problem that it is not suitable in high temperature in summer for users. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments.

[0020] Figure 1 It is a schematic structural diagram of an embodiment of the present invention. Detailed Embodiments

[0021] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the following further details the present invention with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] Please refer to Figure 1 As shown, a refrigerating seat ring circuit includes:

[0023] A main control unit U2;

[0024] A key unit, connected to the main control unit U2 to switch the refrigeration mode;

[0025] A temperature probe terminal J3, whose positive pole receives a voltage, and whose negative pole is connected to the acquisition end of the main control unit U2;

[0026] A thermoelectric cooler terminal J4, whose positive pole receives a voltage, whose negative pole is connected to the source of the MOS transistor Q1, whose drain is grounded, and whose gate is connected to the main control unit U2;

[0027] A fan terminal J5, whose positive pole receives a voltage, whose negative pole is connected to the source of the MOS transistor Q2, whose drain is grounded, and whose gate is connected to the main control unit U2.

[0028] When powered on, the entire circuit is in a low-power state, and the fan and the thermoelectric cooler do not work (the fan control port PB6 is at a low level, and the thermoelectric cooler control port PA5 is at a low level). After pressing the button, the resistance value of the temperature probe on the heat sink is detected. If there are abnormal conditions such as short circuit or open circuit of the probe, it will not work; if the probe is within the controllable temperature range of 20 to 55 degrees Celsius, the refrigeration module will start, and the fan and the thermoelectric cooler will work (the fan control port PB6 is at a PWM level, and the thermoelectric cooler control port PA5 is at a PWM level). There are two modes of strong and weak, which are separately controlled by the button refrigeration mode 1 (refrigeration about 10 degrees) and refrigeration mode 2 (refrigeration about 5 degrees). It is convenient for users to adjust the refrigeration intensity for different room temperatures. If the fan breaks down accidentally during operation, such as being stuck or not rotating, the AD signal converted by PA3 indicates abnormality, and the refrigeration function is automatically turned off. Or if the temperature on the heat sink exceeds the range of 55 degrees, the refrigeration function is automatically turned off. Or if the software loses control and there is no PWM input at PA5, and the fifth pin of LM358 is at a low level, the circuit forcibly turns off the refrigeration function. In this way, three guarantees for circuit safety are achieved.

[0029] In this embodiment, an operational amplifier unit U3A is further included. Its inverting terminal is connected to the temperature probe terminal J3, its non-inverting terminal receives voltage through a resistor R7, and its output terminal is connected to the gate of the MOS transistor Q1 through a diode D2;

[0030] An operational amplifier unit U3B is further included. Its non-inverting terminal is connected to the main control unit U2 through a diode D4, its inverting terminal receives voltage through a resistor R9, and its output terminal is also connected to the gate of the MOS transistor Q1 through a diode D5.

[0031] In this embodiment, the gate of the MOS transistor Q2 is also grounded through a resistor R13, and this gate is also connected to the main control unit U2 through a resistor R11.

[0032] In this embodiment, the gate of the MOS transistor Q1 is grounded through a resistor R8 and a capacitor C10 respectively.

[0033] In this embodiment, the drain of the MOS transistor Q2 is grounded through a resistor R14, a resistor R15, and a capacitor C12 respectively.

[0034] In this embodiment, the negative pole of the temperature probe terminal J3 is grounded through a resistor R2 and a capacitor C5 respectively, and a resistor R1 is provided between the resistor R2 and the capacitor C5.

[0035] The above are only the preferred embodiments of the present application, and are not used to limit the scope of implementation of the present application. All those whose principles and basic structures are the same as or similar to those of the present application are within the protection scope of the present application.

Claims

1. A refrigerated seat ring circuit, characterized in that, Comprising; Main control unit U2; A key unit, connected to the main control unit U2 to switch the refrigeration mode; A temperature probe terminal J3, whose positive pole receives a voltage, and the negative pole is connected to the acquisition terminal of the main control unit U2; A thermoelectric cooler terminal J4, whose positive pole receives a voltage, the negative pole is connected to the source electrode of MOS transistor Q1, its drain electrode is grounded, and the gate electrode is connected to the main control unit U2; A fan terminal J5, whose positive pole receives a voltage, the negative pole is connected to the source electrode of MOS transistor Q2, its drain electrode is grounded, and the gate electrode is connected to the main control unit U2.

2. The refrigerating seat ring circuit according to claim 1, characterized in that: It further includes an operational amplifier unit U3A, whose inverting terminal is connected to the temperature probe terminal J3, the non-inverting terminal receives a voltage through resistor R7, and the output terminal is connected to the gate electrode of the MOS transistor Q1 through diode D2; It further includes an operational amplifier unit U3B, whose non-inverting terminal is connected to the main control unit U2 through diode D4, the inverting terminal receives a voltage through resistor R9, and the output terminal is also connected to the gate electrode of the MOS transistor Q1 through diode D5.

3. The refrigerating seat ring circuit according to claim 2, wherein: The gate electrode of the MOS transistor Q2 is also grounded through resistor R13, and this gate electrode is also connected to the main control unit U2 through resistor R11.

4. The refrigerating seat ring circuit according to claim 3, wherein: The gate electrode of the MOS transistor Q1 is grounded through resistor R8 and capacitor C10 respectively.

5. A refrigerating seat ring circuit according to claim 4, characterized in that: The drain electrode of the MOS transistor Q2 is grounded through resistor R14, resistor R15 and capacitor C12 respectively.

6. The refrigerating seat ring circuit according to claim 1, wherein: The negative pole of the temperature probe terminal J3 is grounded through resistor R2 and capacitor C5 respectively, and resistor R1 is provided between resistor R2 and capacitor C5.

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