Heating temperature control device based on Internet of Things

Abstract

The utility model provides a heat supply temperature control device based on the Internet of Things, and effectively solves the problems that an effective monitoring mode for blockage of a water outlet pipe in a heat exchange station in an existing heat supply system is lacked, the temperature which can be provided for a user side by the heat exchange station is affected, and then the temperature supply effect of the heat supply system is affected. The temperature control device further comprises a heat exchange monitoring unit, the heat exchange monitoring unit obtains a reminding signal based on the flow of the water inlet pipe and the flow of the water outlet pipe of the heat exchange station, and the state monitoring unit comprises a flow detection circuit and a reminding output circuit, so that the temperature supply effect of the heat supply system is prevented from being affected. And the heat supply effect of the user side is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of heating monitoring, in particular to a heating temperature control device based on the Internet of Things. Background Art

[0002] In order to ensure that users can flexibly control the temperature when using the heating system, there is a heating temperature monitoring system based on the Internet of Things cloud platform with a patent application number of 202022595875.4 in the prior art. In this system, users can set the target temperature in the mobile web page according to their temperature requirements, and then the mobile web page transmits the user's required temperature to the cloud platform. The cloud platform processes and reviews the temperature and sends it to the signal communication box. The signal communication box first sends it to the household meter to change the temperature record of the household meter according to the received signal; secondly, it is sent to the control device of the Internet of Things electric regulating valve to achieve temperature regulation by changing the water flow rate. At the same time, the temperature controller installed in the room will monitor the temperature for a second time, upload the data to the cloud platform for verification, and ensure the flexibility of the temperature.

[0003] However, in actual use, the temperature of this heating system is also related to the flow rate of hot water provided by the outlet pipe of the heat exchange station. The inlet pipe and outlet pipe of the heat exchange station realize the temperature change, and the outlet pipe flows water of suitable temperature to the user end. If the outlet pipe is blocked, the flow rate between the inlet pipe and the outlet pipe will be greatly different, resulting in less hot water that the heat exchange station can provide to the user end, causing the indoor temperature of the user end to drop, affecting the heating effect of the heating system, and the prior art lacks an effective monitoring method for whether the outlet pipe is blocked.

[0004] That is, there is a lack of effective monitoring methods for the blockage of the water outlet pipe in the heat exchange station in the existing heating system, which affects the temperature that the heat exchange station can provide to the user end, and further affects the heating effect of the heating system.

[0005] Therefore, the utility model provides a new solution to solve this problem. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a heating temperature control device based on the Internet of Things, which effectively solves the problem of lack of effective monitoring method for the blockage of the water outlet pipe in the heat exchange station in the existing heating system, affecting the temperature that the heat exchange station can provide to the user end, and further affecting the heating effect of the heating system.

[0007] The technical solution is a heating temperature control device based on the Internet of Things, including a cloud platform and a heat exchange station. The temperature control device also includes a heat exchange monitoring unit, and the heat exchange monitoring unit obtains a reminder signal based on the flow rate of the water inlet pipe and the flow rate of the water outlet pipe of the heat exchange station;

[0008] The state monitoring unit includes a flow detection circuit and a reminder output circuit.

[0009] Furthermore, the flow detection circuit obtains a first flow signal and a second flow signal based on the flow of the water inlet pipe and the flow of the water outlet pipe respectively, obtains a difference signal based on the first flow signal and the second flow signal, obtains a status signal based on the difference signal, and the status signal and the first flow signal are output to the reminder output circuit.

[0010] Furthermore, the flow detection circuit obtains a difference signal based on the first flow signal and the second flow signal by performing a subtraction operation to obtain a difference signal.

[0011] Furthermore, the reminder output circuit performs an addition operation based on the difference signal to obtain a status signal.

[0012] Furthermore, the reminder output circuit performs a division operation on the first flow signal to obtain an efficiency signal, obtains a reminder signal based on the efficiency signal, and outputs the reminder signal to the cloud platform.

[0013] Furthermore, the reminder output circuit performs an OR operation on the efficiency signal and the state signal to obtain the reminder signal.

[0014] The utility model achieves the following beneficial effects:

[0015] The present application sets up a heat exchange monitoring unit to detect the flow of the water inlet pipe and the water outlet pipe of the heat exchange station to obtain a first flow signal and a second flow signal respectively, and processes the first flow signal and the second flow signal accordingly to obtain a reminder signal and output it to the cloud platform, thereby realizing the monitoring of the heating effect of the heat exchange station, thereby solving the problem of lack of effective monitoring method for the blockage of the water outlet pipe in the heat exchange station in the existing heating system, thereby avoiding affecting the temperature that the heat exchange station can provide to the user end, and then avoiding affecting the heating effect of the heating system, and ensuring the heating effect of the user end. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the framework of the utility model.

[0017] Figure 2 It is the principle diagram of the flow detection circuit of the utility model.

[0018] Figure 3 This is a schematic diagram of the reminder output circuit of the utility model. DETAILED DESCRIPTION

[0019] For the above and other technical contents, features and functions of the present invention, please refer to the following attached Figure 1-3The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0020] Various exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0021] A heating temperature control device based on the Internet of Things, comprising a cloud platform and a heat exchange station, wherein the temperature control device further comprises a heat exchange monitoring unit, wherein the heat exchange monitoring unit obtains a reminder signal based on the flow rate of a water inlet pipe and a water outlet pipe of the heat exchange station;

[0022] The state monitoring unit includes a flow detection circuit and a reminder output circuit.

[0023] The flow detection circuit sets a flow sensor U1 to detect the flow of the water inlet pipe of the heat exchange station to obtain a first flow signal, wherein the flow sensor U1 can be used with an ultrasonic flow sensor of a model similar to SL7600. The first flow signal is transmitted to the in-phase end of the operational amplifier U2A through the resistor R9. The inverting end of the operational amplifier U2A receives the second flow signal provided by the positive polarity power supply VCC through the resistor R1 for subtraction to obtain a difference signal, wherein the second flow signal is the flow signal of the water outlet pipe collected by a flow sensor of the same sensor model as the flow sensor U1. The difference signal is the flow difference between the water inlet pipe and the water pipe. When the difference signal turns on the transistor Q3, it indicates that the flow difference between the water inlet pipe and the water outlet pipe is large at this time, and the water outlet pipe may be blocked at this time. Then the transistor Q3 outputs the first signal through the diode D3. This first signal turns on the thyristor Q2 through the capacitor C1, and the second flow signal The signal is output to the reminder output circuit, and the first signal is transmitted through the 2nd and 3rd pins of the switch S1, and is transmitted to the in-phase end of the operational amplifier U3A after being delayed by the resistor R17 and the capacitor C2. At this time, the first signal turns on the relay K1, and the relay K1 disconnects the 2nd and 3rd pins of the switch S1 and connects with the 1st pin. If the first flow signal and the second flow signal respectively collected by the water inlet pipe and the water outlet pipe in the next collection cycle are subtracted based on the operational amplifier U2A to obtain a difference signal, if the transistor Q3 obtains the first signal again based on the difference signal, the first signal obtained again is transmitted to the in-phase end of the operational amplifier U3A through the 2nd and 1st pins of the switch S1, and the operational amplifier U3A adds the first signals of the two collection cycles to output a status signal. This status signal indicates that the flow rate of the outlet pipe is always less than the flow rate of the inlet pipe, and there is an abnormality in the outlet pipe of the heat exchange station, and the diode D1 outputs the status signal to the reminder output circuit;

[0024] The flow detection circuit includes a resistor R9, one end of which is connected to the out pin of the flow sensor U1, the other end of which is respectively connected to one end of a resistor R7 and the in-phase end of an op amp U2A, the inverting end of the op amp U2A is respectively connected to one end of a resistor R1 and one end of a resistor R2, the output end of the op amp U2A is respectively connected to one end of a resistor R18 and the other end of a resistor R2, the other end of the resistor R18 is connected to the base of a transistor Q3, the collector of the transistor Q3 is respectively connected to one end of a resistor R5 and the positive electrode of a diode D3, the other end of the resistor R5 is respectively connected to the other end of the resistor R1 and the vcc pin of the flow sensor U1 and is connected to a positive polarity power supply VCC, the emitter of the transistor Q3 is respectively connected to one end of the resistor R3 The cathode of diode D3 is respectively connected to one end of capacitor C1 and pin 2 of switch S1; pin 1 of switch S1 is respectively connected to one end of resistor R17, one end of capacitor C2, the in-phase end of op amp U3A, one end of relay K1 and one end of resistor R8; the other end of resistor R17 is connected to pin 3 of switch S1; the inverting end of op amp U3A is respectively connected to one end of resistor R4 and one end of resistor R19; the other end of resistor R19 is connected to the output end of op amp U3A; the other end of resistor R4 is respectively connected to the other end of resistor R3, the other end of resistor R7, the other end of capacitor C1, the other end of capacitor C2, the other end of relay K1, the other end of resistor R8 and the gnd pin of flow sensor U1 and connected to ground.

[0025] The reminder output circuit is turned on when the thyristor Q2 is turned on. The thyristor Q2 outputs the second flow signal to the divider composed of the op amp U4A and the multiplier V1 to perform a division operation with the flow lower limit signal of the water outlet pipe provided by the positive polarity power supply VCC through the resistor R6. When the divider turns on the transistor Q1, it indicates that the efficiency of the water outlet pipe has been lower than the lower limit value, that is, the hot water provided by the water outlet pipe to the user end cannot provide enough heat to the user end. At this time, the transistor Q1 outputs the efficiency signal to the diode D2, the diode D1, and the resistor R10 for OR operation and outputs the reminder signal. The reminder signal is output to the cloud platform. After receiving the reminder signal, the cloud platform immediately maintains and replaces the water outlet pipe of the heat exchange station to ensure the temperature of the user end.

[0026] The reminder output circuit includes a thyristor Q2, an anode of the thyristor Q2 is connected to one end of the resistor R1 in the flow detection circuit, one end of the resistor R2, and the inverting end of the operational amplifier U2A, a control electrode of the thyristor Q2 is connected to the negative electrode of the diode D3 in the flow detection circuit, and one end of the capacitor C1, a cathode of the thyristor Q2 is connected to one end of the resistor R15, the other end of the resistor R15 is respectively connected to one end of the resistor R14 and the inverting end of the operational amplifier U4A, a non-inverting end of the operational amplifier U4A is connected to one end of the resistor R16, an output end of the operational amplifier U4A is respectively connected to pin 2 of the multiplier V1, the base of the transistor Q1, and one end of the resistor R12, a pin 1 of the multiplier V1 is connected to one end of the resistor R6, and a resistor R The other end of 6 is respectively connected to the emitter of transistor Q1, the emitter of transistor Q1, the other end of resistor R1 in the flow detection circuit and connected to the positive polarity power supply VCC, the collector of transistor Q1 is respectively connected to one end of resistor R13 and the positive electrode of diode D2, the cathode of diode D2 is respectively connected to the cathode of diode D1, one end of resistor R10 and one end of resistor R11, the other end of resistor R11 is connected to the cloud platform, the anode of diode D1 is connected to the output end of op amp U3A in the flow detection circuit and the other end of resistor R19, the other end of resistor R10 is respectively connected to the other end of resistor R16, the other end of resistor R13 and the other end of resistor R8 in the flow detection circuit and connected to ground.

[0027] For example, in actual use, the first flow signal collected by the flow detection circuit is 3.5V, and the second flow signal collected at the outlet pipe is 1.5V, then the difference signal obtained by the operational amplifier U2A is 2V, at this time the reminder output circuit is turned on, the second flow signal is output to the reminder output circuit, and the transistor Q3 outputs the first signal through the diode D3, the operational amplifier U3A adds the first signals obtained from the two previous and subsequent collection cycles to output an efficiency signal, the efficiency signal is output to the reminder output circuit, then the reminder output circuit divides the second flow signal and the 3V flow lower limit signal through the divider composed of the operational amplifier U4A and the multiplier V1, then the transistor Q1 outputs the efficiency signal, then the diode D1, the diode D2, and the resistor R10 perform an OR operation on the efficiency signal and the status signal to obtain a reminder signal, then the reminder signal is output to the cloud platform.

[0028] When the utility model is in use, the heat exchange monitoring unit includes a flow detection circuit and a reminder output circuit. The flow detection circuit is provided with a flow sensor U1 to detect the flow of the water inlet pipe of the heat exchange station to obtain a first flow signal. The first flow signal is transmitted to the in-phase end of the operational amplifier U2A through the resistor R9. The inverting end of the operational amplifier U2A receives the second flow signal provided by the positive polarity power supply VCC through the resistor R1 for subtraction to obtain a difference signal. When the difference signal turns on the transistor Q3, the transistor Q3 outputs the first signal through the diode D3. The first signal turns on the thyristor Q2 through the capacitor C1, and the second flow signal is output to the reminder output circuit. The first signal is transmitted through the 2nd and 3rd pins of the switch S1, and is transmitted to the in-phase end of the operational amplifier U3A after being delayed by the resistor R17 and the capacitor C2. At this time, the first signal turns on the relay K1, and the relay K1 turns on the 2nd and 3rd pins of the switch S1. Disconnect and connect to pin 1. If the transistor Q3 obtains the first signal again based on the difference signal, the first signal obtained again is transmitted to the in-phase end of the operational amplifier U3A through pins 2 and 1 of the switch S1. The operational amplifier U3A adds the first signals of the two acquisition cycles and outputs a status signal. The diode D1 outputs the status signal to the reminder output circuit. The thyristor Q2 in the reminder output circuit outputs the second flow signal to the divider composed of the operational amplifier U4A and the multiplier V1, and divides the flow lower limit signal of the water outlet pipe provided by the positive polarity power supply VCC through the resistor R6. When the divider turns on the transistor Q1, the transistor Q1 outputs the efficiency signal to the diode D2, the diode D1, and the resistor R10 for OR operation and outputs a reminder signal. The reminder signal is output to the cloud platform. After receiving the reminder signal, the cloud platform immediately maintains and replaces the water outlet pipe of the heat exchange station to ensure the temperature at the user end.

[0029] The utility model achieves the following beneficial effects:

[0030] (1) The present application sets up a heat exchange monitoring unit to detect the flow of the water inlet pipe and the water outlet pipe of the heat exchange station to obtain a first flow signal and a second flow signal respectively, and processes the first flow signal and the second flow signal accordingly to obtain a reminder signal and output it to the cloud platform, thereby realizing the monitoring of the heating effect of the heat exchange station, thereby solving the problem that there is a lack of effective monitoring method for the blockage of the water outlet pipe in the heat exchange station in the existing heating system, which affects the temperature that the heat exchange station can provide to the user end, and then affects the heating effect of the heating system, thereby ensuring the heating effect of the user end.

[0031] (2) The flow detection circuit provided in the present application performs a subtraction operation on the first flow signal and the second flow signal based on the operational amplifier U2A to obtain a difference signal, outputs the first signal based on the transistor Q3 and the diode D3, and performs an addition operation on the two first signals obtained by collecting two adjacent collection cycles to obtain a state signal, thereby determining that there is an abnormality in the water outlet pipe, resulting in a large difference between the flow of the water outlet pipe and the flow of the water inlet pipe;

[0032] (3) The reminder output circuit provided in the present application transmits the second flow signal to the operational amplifier U4A and the multiplier V1 to perform a division operation with the flow lower limit signal, and obtains an efficiency signal based on the transistor Q1. Then, the diodes D1 and D2 output a reminder signal based on the efficiency signal and the status signal, thereby determining that there is a blockage problem in the water blowing pipe of the heat exchange station, causing the flow of the water outlet pipe to be always in a low state, thereby achieving effective monitoring.

Claims

1. A heating temperature control device based on the Internet of Things, including a cloud platform and a heat exchange station, characterized in that: The temperature control device further comprises a heat exchange monitoring unit, which obtains a reminder signal based on the flow rate of the water inlet pipe and the flow rate of the water outlet pipe of the heat exchange station; The heat exchange monitoring unit includes a flow detection circuit and a reminder output circuit.

2. The heating temperature control device based on the Internet of Things according to claim 1, characterized in that: The flow detection circuit obtains a first flow signal and a second flow signal based on the flow of the water inlet pipe and the flow of the water outlet pipe respectively, obtains a difference signal based on the first flow signal and the second flow signal, obtains a status signal based on the difference signal, and the status signal and the first flow signal are output to the reminder output circuit.

3. The heating temperature control device based on the Internet of Things according to claim 2, characterized in that: The flow detection circuit obtains a difference signal based on the first flow signal and the second flow signal, and performs a subtraction operation to obtain a difference signal.

4. The heating temperature control device based on the Internet of Things according to claim 2, characterized in that: The reminder output circuit performs an addition operation based on the difference signal to obtain a status signal.

5. The heating temperature control device based on the Internet of Things according to claim 1, characterized in that: The reminder output circuit performs a division operation on the first flow signal to obtain an efficiency signal, obtains a reminder signal based on the efficiency signal, and outputs the reminder signal to the cloud platform.

6. The heating temperature control device based on the Internet of Things according to claim 5, characterized in that: The reminder output circuit performs an OR operation on the efficiency signal and the state signal to obtain a reminder signal.

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