CN104654594B - Experimental device for simulating water heater user behavior - Google Patents

Abstract

The invention discloses an experimental device for simulating user behavior of a water heater, which comprises a water mixing valve, a two-way valve, a temperature sensor, a flow sensor, a control unit and an operation display unit. The hot water outlet is connected, the water outlet of the water mixing valve is connected with the water inlet of the water outlet pipe, the two-way valve is arranged on the water outlet pipe, and the temperature sensor is used to detect the temperature of the water outlet of the water outlet pipe. water temperature, the flow sensor is used to detect the flow in the water outlet pipe; the control unit is respectively connected to the water mixing valve, the two-way valve, the temperature sensor and the flow sensor, and the operation display unit and The control unit is connected in communication. The experimental device for simulating water heater user behavior of the present invention can automatically simulate user water habits according to preset parameters, improves the efficiency and accuracy of water heater experiments, can realize unmanned experiments, and reduces workload.

Description

Experimental setup for simulating water heater user behavior

technical field

The invention relates to an experimental device, in particular to an experimental device for simulating user behavior of a water heater.

Background technique

Air energy water heaters are becoming more and more popular among consumers because of their comfort and energy saving. In order to achieve more comfortable and energy-saving goals, manufacturers usually need to simulate users' behaviors for experiments, and then summarize the optimal air source water heater control algorithm. At present, the experimental method of air energy water heaters usually uses the method of manually switching the faucet to discharge water. This experimental method has a lot of work and is not accurate.

Contents of the invention

In view of the above-mentioned current state of the art, the technical problem to be solved by the present invention is to provide an experimental device for simulating the behavior of water heater users, so as to reduce the workload of the water heater experiment and improve the accuracy at the same time.

In order to solve the above technical problems, the present invention provides an experimental device for simulating user behavior of a water heater, including a water mixing valve, a two-way valve, a temperature sensor, a flow sensor, a control unit, and an operation display unit. The water inlet is connected with the hot water outlet of the water heater, the cold water inlet of the water mixing valve is connected with the tap water pipe, the water outlet of the water mixing valve is connected with the water inlet of the water outlet pipe, and the two-way valve is arranged on On the water outlet pipe, the temperature sensor is used to detect the water temperature at the water outlet of the water outlet pipe, and the flow sensor is used to detect the flow in the water outlet pipe; the control unit is respectively connected to the water mixing valve, the a two-way valve, the temperature sensor and the flow sensor, the operation display unit is in communication with the control unit;

The control unit receives the temperature signal collected by the temperature sensor and the flow signal collected by the flow sensor, and transmits the temperature signal and the flow signal to the operation display unit; The control unit transmits the preset water use time period signal and the water temperature signal corresponding to each water use time period. The control unit compares the water use time period signal with the internal clock signal of the control unit, and reports to the The two-way valve sends a driving signal, and the control unit performs calculation according to the water temperature signal and the temperature signal, and sends a driving signal to the water mixing valve according to the calculation result.

In one of the embodiments, the control unit includes a microprocessor unit, an AD sampling conversion circuit, a flow detection circuit, a two-way valve drive circuit, a water mixing valve drive circuit and a first communication circuit, and the temperature sensor passes through the The AD sampling conversion circuit is connected to the microprocessor unit, the flow sensor is connected to the microprocessor unit through the flow detection circuit, and the two-way valve is connected to the microprocessor unit through the two-way valve driving circuit. The water mixing valve is connected to the microprocessor unit through the water mixing valve driving circuit, and the operation display unit is connected to the microprocessor unit through the first communication circuit.

In one of the embodiments, the operation display unit includes an operation unit, a display unit and a second communication circuit, the operation unit and the display unit are connected to the second communication circuit, and the second communication circuit is connected to the second communication circuit. The first communication circuit is connected.

In one of the embodiments, the first communication circuit and the second communication circuit are RS485 communication circuits.

In one of the embodiments, the experimental device further includes a flow valve, the flow valve is arranged on the water outlet pipe, and the flow valve is connected to the control unit; the operation display unit sends settings to the control unit The set flow signal of the flow, the control unit calculates according to the set flow signal and the flow signal, and sends a driving signal to the flow valve according to the calculation result.

In one of the embodiments, the experimental device also includes a computer and a data converter, the computer includes a storage unit and a USB interface, and the USB interface is connected to the operation display unit through the data converter; the operation display The unit transmits the temperature signal and the flow signal to the computer, and the computer stores the temperature signal and the flow signal in the storage unit.

Compared with the prior art, the experimental device for simulating water heater user behavior of the present invention sets the water use time period and the water temperature corresponding to each water use time period in advance by operating the display unit, and controls the two-way valve regularly according to the set time through the control unit The opening and closing of the user's daily water schedule is simulated, and the temperature of the outlet water is adjusted by controlling the mixing valve to adjust the ratio of hot and cold water through the control unit, thereby simulating the temperature of the user's water in different time periods; Temperature information to accurately calculate the amount of hot water used by actual users. It can be seen that the experimental device for simulating water heater user behavior of the present invention can automatically simulate user water habits according to preset parameters, improve experimental efficiency and accuracy, realize unmanned experiments, and reduce workload.

Description of drawings

Fig. 1 is the connection relationship diagram between the experimental device and the water heater for simulating the user behavior of the water heater in the embodiment of the present invention;

Fig. 2 is a block diagram of an experimental device for simulating water heater user behavior in an embodiment of the present invention;

Fig. 3 is the circuit diagram of the AD sampling conversion circuit of the control unit;

Fig. 4 is the circuit diagram of the flow detection circuit of the shown control unit;

Fig. 5 is the circuit diagram of the two-way valve driving circuit of the control unit;

Fig. 6 is a circuit diagram of the mixing valve driving circuit of the control unit.

Description of reference signs: 101, water heater; 102, hot water pipe; 103, water mixing valve; 104, water outlet pipe; 105, two-way valve; 106, temperature sensor; 107, flow sensor; 108, flow valve; 200, control Unit; 201, microprocessor unit; 202, AD sampling conversion circuit; 203, flow detection circuit; 204, two-way valve drive circuit; 205, water mixing valve drive circuit; 206, first communication circuit; 207, flow drive circuit 300, operation display unit; 301, operation unit; 302, display unit; 303, second communication circuit; 400, data converter; 500, computer.

detailed description

The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Fig. 1 shows the connection relationship between the experimental device and the water heater 101 for simulating the behavior of water heater users in one of the embodiments of the present invention. As shown in Fig. 1, the experimental device includes a water mixing valve 103, a two-way valve 105, a temperature sensor 106. The flow sensor 107, the control unit 200 and the operation display unit 300, wherein the mixing valve 103 is a mixing valve in the prior art, which has a hot water inlet, a cold water inlet and a water outlet, and the water mixing valve 103 The hot water inlet is connected with the hot water outlet of the water heater 101 through the hot water pipe 102, the cold water inlet of the mixing valve 103 is connected with the tap water pipe, and the water outlet of the mixing valve 103 is connected with the water inlet of the water outlet pipe 104. The two-way valve 105 is arranged on the outlet pipe 104 for opening and closing the outlet pipe 104; the temperature sensor 106 is arranged on the outlet pipe 104 near the water outlet for detecting the The water temperature at the water outlet of the water outlet pipe 104 ; the flow sensor 107 is disposed in the water outlet pipe 104 for detecting the flow rate in the water outlet pipe 104 . The control unit 200 is respectively connected to the water mixing valve 103 , the two-way valve 105 , the temperature sensor 106 and the flow sensor 107 , and the operation display unit 300 is communicated with the control unit.

The control unit 200 receives the temperature signal collected by the temperature sensor 106 and the flow signal collected by the flow sensor 107, and transmits the temperature signal and the flow signal to the operation display unit 300; the operation display The unit 300 is for the experimenter to input the water use time period and the water temperature corresponding to each water use time period, and transmit the water use time period signal and the water temperature signal corresponding to each water use time period to the control unit 200, and the control unit will The water use time period signal is compared with the internal clock signal of the control unit, and a drive signal is sent to the two-way valve 105 according to the comparison result, thereby simulating the daily water use schedule of the user, and the control unit according to the water temperature The signal and the temperature signal are calculated, and a drive signal is sent to the mixing valve 103 according to the calculation result, and the mixing valve 103 is adjusted to reach the set water temperature, thereby simulating the water temperature of users in different time periods. The adjustment process of the water mixing valve 103 is as follows: the water mixing valve 103 has three interfaces, which are hot water inlet, cold water inlet and water outlet respectively. The microprocessor unit 201 compares the set water temperature signal with the temperature signal, and increases the opening of the hot water inlet when the outlet water temperature corresponding to the temperature signal is lower than the target outlet water temperature corresponding to the water temperature signal, thereby increasing The flow rate of hot water flowing in increases the outlet water temperature. Conversely, when the outlet water temperature corresponding to the temperature signal is higher than the target outlet water temperature corresponding to the water temperature signal, increase the opening of the cold water inlet, thereby increasing the flow of cold water inflow, reducing the outlet water temperature, and achieving the purpose of adjusting the outlet water temperature . The adjustment of the opening degree of the water mixing valve 103 is carried out every once in a while.

It can be seen that the experimental device for simulating the user behavior of the water heater 101 in this embodiment can automatically simulate the user's water habits and record automatically according to the preset parameters, which improves the efficiency and accuracy of the experiment, enables unmanned experiments, and reduces the workload.

Preferably, the experimental device also includes a flow valve 108, the flow valve 108 is arranged on the outlet pipe 104, and the flow valve 108 is connected with the control unit 200; 200 sends a set flow signal of a set flow, and the control unit 200 performs calculation according to the set flow signal and the flow signal, and sends a driving signal to the flow valve 108 according to the calculation result. The control unit 200 controls the discharge flow of the flow valve 108 according to the flow rate set by the computer 500 or the operation display unit 300, and controls the water flow through the flow valve 108 to simulate the use of different showers (showers with large flow rates, flow rate showers, etc.) when users use water. small shower).

Figure 2 is a block diagram of the control unit 200, the control unit 200 includes a microprocessor unit 201, AD sampling conversion circuit 202, flow detection circuit 203, two-way valve drive circuit 204, mixing valve drive circuit 205, flow valve The drive circuit 207 and the first communication circuit 206, the temperature sensor 106 is connected to the microprocessor unit 201 through the AD sampling conversion circuit 202, the flow sensor 107 is connected to the microprocessor unit 203 through the flow detection circuit 203 connected to the microprocessor unit 201, the two-way valve 105 is connected to the microprocessor unit 201 through the two-way valve driving circuit 204, and the mixing valve 103 is connected to the microprocessor unit through the mixing valve driving circuit 205. The flow valve 108 is connected to the microprocessor unit 201 through the flow valve drive circuit 207, and the operation display unit 300 is connected to the microprocessor unit 201 through the first communication circuit 206. connected. The microprocessor unit 201 detects the signal of the temperature sensor 106 installed at the water outlet through the AD sampling conversion circuit 202, thereby detecting the outlet water temperature value; the microprocessor unit 201 detects the signal of the flow sensor 107 installed at the water outlet through the flow detection circuit 203 to obtain flow value. The microprocessor unit 201 sends data such as the flow rate value and the outlet water temperature back to the operation display unit 300 through the first communication circuit.

As shown in Figure 2, the operation display unit 300 includes an operation unit 301, a display unit 302 and a second communication circuit 303, the operation unit 301 is for the experimenter to input a timing period and set the water temperature, and the display unit 302 is used for To display the temperature signal and the flow signal, the operation unit 301 and the display unit 302 are connected to the second communication circuit 303 , and the second communication circuit 303 is connected to the first communication circuit 206 . Preferably, the first communication circuit 206 and the second communication circuit 303 are RS485 communication circuits.

Preferably, the experimental device also includes a computer 500 and a data converter 400, the computer 500 includes a storage unit and a USB interface, and the USB interface is connected to the operation display unit 300 through the data converter 400; the operation The display unit 300 transmits the temperature signal and the flow signal to the computer 500, and the computer 500 stores the temperature signal and the flow signal in the storage unit. Because the computer 500 has no RS485 interface, it is converted into a USB interface through the data converter 400 and then interacts with the computer 500 for data. The computer 500 can store the data of the operation and display unit 300 and set the time period and temperature of the water for regular use through advanced software. And after the computer 500 is networked, remote control and data viewing can be realized.

FIG. 3 is a circuit diagram of the AD sampling conversion circuit 202 . Among Fig. 3, CN24 is a pin socket, and the temperature sensor 106 is externally connected, and the temperature sensor 106 forms a voltage divider with the resistor R41. The microprocessor unit 201 detects the voltage of the resistor R41 through the circuit of FIG. The outlet water temperature is obtained from the temperature-resistance characteristic curve of the temperature sensor 106 .

FIG. 4 is a circuit diagram of the flow detection circuit 203 . CN20 among Fig. 4 is a four-core needle seat, connects flow sensor 107, and FLOW_FB is the pulse signal of the output of flow sensor 107, is connected to microprocessor unit 201, and microprocessor unit 201 calculates every cycle by detecting the pulse signal. The number of pulses per minute, the flow value is calculated according to the corresponding relationship between the number of pulses/min and the flow.

FIG. 5 is a circuit diagram of the two-way valve driving circuit 204 . After the switch signal arrives, the operation display unit 300 sends the switch signal to the control unit 200, and the microprocessor unit 201 of the control unit 200 outputs the on/off signal. The two-way valve driving circuit 204 is as follows, the microprocessor unit 201 outputs the switch signal 2V_2003 of the two-way valve 105, and the fire wire of the two-way valve 105 is controlled through the relay K14, and the needle seat CN9 is connected to the two-way valve 105. RC14 absorbs the disturbance energy generated when the two-way valve 105 is turned off.

FIG. 6 is a circuit diagram of the mixing valve driving circuit 205 . The interface circuit of the water mixing valve 103 is as follows. The water mixing valve 103 is connected to the needle seat CN5, and the output driving signal is amplified by the U15 driving chip 2003 to increase the driving capability.

The flow driving circuit is the same as the water mixing valve driving circuit 205, and will not be repeated here.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (4)

1. An experimental device for simulating user behavior of a water heater, characterized in that it comprises a mixing valve, a two-way valve, a temperature sensor, a flow sensor, a control unit and an operation display unit, the hot water inlet of the mixing valve is connected to the The hot water outlet of the water heater is connected, the cold water inlet of the water mixing valve is connected with the tap water pipe, the water outlet of the water mixing valve is connected with the water inlet of the water outlet pipe, and the two-way valve is arranged on the water outlet pipe , the temperature sensor is used to detect the water temperature at the water outlet of the outlet pipe, and the flow sensor is used to detect the flow in the outlet pipe; the control unit is respectively connected to the mixing valve, the two-way valve, the The temperature sensor and the flow sensor, the operation display unit is connected to the control unit in communication; The control unit receives the temperature signal collected by the temperature sensor and the flow signal collected by the flow sensor, and transmits the temperature signal and the flow signal to the operation display unit; The unit transmits the preset water use time period signal and the water temperature signal corresponding to each water use time period. The control unit compares the water use time period signal with the internal clock signal of the control unit, and sends a report to the two according to the comparison result. The through valve sends a driving signal, and the control unit calculates according to the water temperature signal and the temperature signal, and sends a driving signal to the water mixing valve according to the calculation result; the control unit includes a microprocessor unit, an AD A sampling conversion circuit, a flow detection circuit, a two-way valve drive circuit, a water mixing valve drive circuit and a first communication circuit, the temperature sensor is connected to the microprocessor unit through the AD sampling conversion circuit, and the flow sensor is connected to the microprocessor unit through the AD sampling conversion circuit. The flow detection circuit is connected to the microprocessor unit, the two-way valve is connected to the microprocessor unit through the two-way valve driving circuit, and the water mixing valve is connected to the water mixing valve through the water mixing valve driving circuit. The microprocessor unit is connected, and the operation display unit is connected to the microprocessor unit through the first communication circuit; It also includes a flow valve, the flow valve is arranged on the water outlet pipe, and the flow valve is connected to the control unit; the operation display unit sends a set flow signal to the control unit, and the control unit according to The set flow signal and the flow signal are calculated, and a driving signal is sent to the flow valve according to the calculation result. 2. The experimental device according to claim 1, wherein the operation display unit comprises an operation unit, a display unit and a second communication circuit, and the operation unit and the display unit are connected to the second communication circuit , the second communication circuit is connected to the first communication circuit. 3. The experimental device according to claim 2, wherein the first communication circuit and the second communication circuit are RS485 communication circuits. 4. The experimental device according to any one of claims 1 to 3, characterized in that, the experimental device also includes a computer and a data converter, the computer includes a storage unit and a USB interface, and the USB interface is connected via the The data converter is connected to the operation display unit; the operation display unit transmits the temperature signal and the flow signal to the computer, and the computer stores the temperature signal and the flow signal in the storage unit .