CN211877238U - A water-soluble fertilizer reactor monitoring system - Google Patents

Abstract

The utility model discloses a water-soluble fertilizer reaction kettle monitoring system, which comprises a kettle body and a temperature monitoring and processing unit. A temperature sensor is arranged in the kettle body. The temperature sensor is an infrared temperature sensor arranged on the top of the inner wall of the kettle. The temperature monitoring and processing unit comprises: The infrared temperature sampling circuit, the signal amplification compensation circuit and the stable amplitude circuit are connected in sequence, the input end of the infrared temperature sampling circuit is connected to the signal output end of the infrared temperature sensor, and the output end of the temperature amplitude circuit is connected to the controller. The temperature sensor is used to directly detect the reaction temperature of the material in the kettle, and the response speed is fast, which greatly improves the temperature sampling efficiency; the infrared temperature sampling circuit improves the temperature sampling efficiency, and the signal amplification compensation circuit improves the continuity of temperature sampling, reduces the monitoring system error, and stabilizes the amplitude. The value circuit ensures the stability of controller signal reception and internal arithmetic processing, and improves the real-time and accuracy of temperature monitoring of water-soluble reaction.

Description

A water-soluble fertilizer reactor monitoring system

technical field

The utility model relates to the technical field of water-soluble fertilizer production equipment, in particular to a water-soluble fertilizer reaction kettle monitoring system.

Background technique

The reaction kettle is usually used in the production process of water-soluble fertilizer. The reaction kettle generally includes a kettle body, and a stirrer is arranged inside the kettle body. The agitator is used to mix the materials and facilitate the reaction of the materials. During the reaction process of the material, real-time monitoring of the internal temperature of the kettle is required to ensure the stability and safety of fertilizer production. In the existing reaction kettle, a thermocouple is usually installed in the kettle body to detect the reaction temperature, and its detection signal is easily disturbed by the environment, and during the temperature sampling process, because the water-soluble reaction process is fast and the response speed of the thermocouple sensor is slow, the temperature detection result cannot be detected. The actual value is directly and quickly reflected, resulting in a deviation in detection. Therefore, it is necessary to improve the temperature monitoring system of the reactor.

Therefore, the present invention provides a new solution to solve this problem.

Utility model content

In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a monitoring system for a water-soluble fertilizer reactor.

The technical solution is as follows: a water-soluble fertilizer reaction kettle monitoring system, including a kettle body and a temperature monitoring and processing unit, a temperature sensor is arranged in the kettle body, and the temperature sensor is an infrared temperature sensor arranged on the top of the inner wall of the kettle. , the temperature monitoring processing unit includes an infrared temperature sampling circuit, a signal amplification compensation circuit and a stable amplitude circuit connected in sequence, the input end of the infrared temperature sampling circuit is connected to the signal output end of the infrared temperature sensor, and the stable amplitude circuit The output of the value circuit is connected to the controller.

Preferably, the infrared temperature sampling circuit includes a triode Q1, the base of the triode Q1 is connected to one end of the resistors R1, R2, the capacitor C1 and the signal output end of the infrared temperature sensor, the other end of the resistor R2 and the capacitor C1 is grounded, and the triode is connected to the ground. The collector of Q1 is connected to one end of resistor R3, capacitor C2 and C3, the other end of resistor R1, R3 and capacitor C2 is connected to +5V power supply, the other end of capacitor C3 is grounded, and the emitter of transistor Q1 is grounded through resistor R4.

Preferably, the signal amplification compensation circuit includes an operational amplifier AR1, the non-inverting input terminal of the operational amplifier AR1 is connected to the cathode of the diode D1 and the collector of the transistor Q1 through the resistor R5, and is grounded through the parallel resistor R6 and the capacitor C4, and the diode The anode of D1 is grounded, the inverting input terminal of the operational amplifier AR1 is connected to the output terminal of the operational amplifier AR1 through the parallel resistor R8 and the capacitor C5, and is grounded through the resistor R7.

Preferably, the stable amplitude circuit includes a transistor Q2, the collector of the transistor Q2 is connected to the output end of the operational amplifier AR1 and one end of the resistor R9, and the base of the transistor Q2 is connected to the other end of the resistor R9 and the cathode of the Zener diode DZ1 , the emitter of the transistor Q2 is connected to one end of the capacitor C6 and the non-inverting input of the operational amplifier AR2, the anode of the Zener diode DZ1 is connected to the other end of the capacitor C6 in parallel with the ground, and the inverting input of the operational amplifier AR2 is connected to the operation through the resistor R10. The output of the amplifier AR2 and the input of the controller.

Preferably, an electronic touch screen is provided on the outer wall of the kettle, and the electronic touch screen is connected to the controller through a serial port.

Through the above technical solutions, the beneficial effects of the present utility model are:

1. The utility model adopts the infrared temperature sensor J1 to directly detect the reaction temperature of the material in the kettle, and the response speed is fast, which can well improve the temperature sampling efficiency;

2. After the infrared temperature sampling circuit performs low-pass filtering on the output signal of the infrared temperature sensor J1, the temperature detection signal is rapidly amplified by the transistor Q1 to improve the temperature sampling efficiency;

3. The signal amplification compensation circuit uses the principle of resistance-capacitance compensation to improve the continuity of temperature sampling and reduce the monitoring system error in the process of op-amp;

4. The stable amplitude circuit uses the triode voltage regulation principle to improve the stability of the temperature sampling value, and uses the voltage follower principle to isolate the output signal of the triode voltage regulator and send it to the controller to ensure that the controller signal is received and the internal The stability of arithmetic processing can effectively improve the real-time and accuracy of temperature monitoring of water-soluble reaction.

Description of drawings

FIG. 1 is a schematic diagram of the infrared temperature sampling circuit of the utility model.

FIG. 2 is a schematic diagram of a signal amplifying and compensating circuit of the present invention.

Fig. 3 is the principle diagram of the stable amplitude circuit of the utility model.

Detailed ways

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to FIGS. 1 to 3 . The structural contents mentioned in the following embodiments are all referenced to the accompanying drawings.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

A water-soluble fertilizer reaction kettle monitoring system, comprising a kettle body and a temperature monitoring processing unit, a temperature sensor is arranged in the kettle body, the temperature sensor is an infrared temperature sensor J1 arranged on the top of the inner wall of the kettle, and the temperature monitoring processing unit includes an infrared temperature sensor connected in sequence. A temperature sampling circuit, a signal amplification compensation circuit and a stable amplitude circuit, the input terminal of the infrared temperature sampling circuit is connected to the signal output terminal of the infrared temperature sensor J1, and the output terminal of the stable amplitude circuit is connected to the controller.

As shown in Figure 1, the infrared temperature sampling circuit includes a transistor Q1, the base of the transistor Q1 is connected to the resistors R1, R2, one end of the capacitor C1 and the signal output end of the infrared temperature sensor J1, the other end of the resistor R2 and the capacitor C1 is grounded, and the transistor is connected to the ground. The collector of Q1 is connected to one end of resistor R3, capacitor C2 and C3, the other end of resistor R1, R3 and capacitor C2 is connected to +5V power supply, the other end of capacitor C3 is grounded, and the emitter of transistor Q1 is grounded through resistor R4.

As shown in Figure 2, the signal amplification compensation circuit includes an operational amplifier AR1. The non-inverting input terminal of the operational amplifier AR1 is connected to the cathode of the diode D1 and the collector of the transistor Q1 through the resistor R5, and is grounded through the parallel resistor R6 and capacitor C4. The anode of the diode D1 is grounded, and the inverting input terminal of the operational amplifier AR1 is connected to the output terminal of the operational amplifier AR1 through the parallel resistor R8 and the capacitor C5, and is grounded through the resistor R7.

As shown in Figure 3, the stable amplitude circuit includes a transistor Q2, the collector of the transistor Q2 is connected to the output end of the operational amplifier AR1 and one end of the resistor R9, and the base of the transistor Q2 is connected to the other end of the resistor R9 and the Zener diode DZ1. The cathode, the emitter of the transistor Q2 is connected to one end of the capacitor C6 and the non-inverting input of the operational amplifier AR2, the anode of the Zener diode DZ1 is connected to the other end of the capacitor C6 in parallel with the ground, and the inverting input of the operational amplifier AR2 is connected through the resistor R10 The output of op amp AR2 and the input of the controller.

The specific working principle of the utility model is as follows: the utility model adopts the infrared temperature sensor J1 to directly detect the reaction temperature of the material in the kettle, and the response speed is fast, which can well improve the temperature sampling efficiency. In order to avoid external interference factors and improve the accuracy of temperature sampling, a temperature monitoring processing unit is designed to process the output signal of the infrared temperature sensor J1.

The output signal of the infrared temperature sensor J1 is first sent to the infrared temperature sampling circuit for amplification. After the capacitor C1 performs low-pass filtering on the output signal of the infrared temperature sensor J1, the temperature detection signal is rapidly amplified by the transistor Q1 to improve the temperature sampling. efficiency. In order to ensure the stability of the measurement, the signal amplification compensation circuit is used to further process the output signal of the infrared temperature sampling circuit. The diode D1 limits the output signal of the transistor Q1, and then sends it to the operational amplifier AR1 for operational amplifier processing. During the op amp process, the resistor R8 and the capacitor C5 play the role of resistance-capacitance compensation at the negative feedback end of the op amp AR1, which improves the continuity of temperature sampling and reduces the monitoring system error. In the stable amplitude circuit, the resistor R9, the transistor Q2 and the Zener diode DZ1 form a transistor voltage stabilizer, and the output signal of the op amp AR1 is stabilized by using the transistor voltage stabilizer principle to improve the stability of the temperature sampling value. Then the op amp AR2 uses the voltage follower principle to isolate the output signal of the triode regulator and send it to the controller to ensure the stability of the controller signal reception and internal operation processing, thereby effectively improving the real-time monitoring of water-soluble reaction temperature. accuracy and accuracy.

An electronic touch screen is arranged on the outer wall of the kettle, and the electronic touch screen is connected to the controller through a serial port. When the controller receives the temperature sampling signal output by the temperature monitoring processing unit, the internal CPU of the controller performs A/D conversion and data analysis and processing, and then sends the temperature data to the electronic touch screen for real-time display, which is convenient for operators to view.

The above is a further detailed description of the present invention in conjunction with the specific embodiments, and it cannot be considered that the specific implementation of the present invention is limited to this; Under the premise of the idea of the scheme, the expansion, the replacement of the operation method and the data should all fall within the protection scope of the present invention.

Claims (5)

1. a water-soluble fertilizer reactor monitoring system, comprising a still body and a temperature monitoring and processing unit, a temperature sensor is provided in the still body, and it is characterized in that: the temperature sensor is an infrared temperature sensor arranged on the top of the inner wall of the still body, The temperature monitoring and processing unit includes an infrared temperature sampling circuit, a signal amplification compensation circuit and a stable amplitude circuit connected in sequence. The input end of the infrared temperature sampling circuit is connected to the signal output end of the infrared temperature sensor, and the stable amplitude value is The output end of the circuit is connected to the controller. 2. The water-soluble fertilizer reactor monitoring system according to claim 1, characterized in that: the infrared temperature sampling circuit comprises a transistor Q1, and the base of the transistor Q1 is connected to one end of resistors R1, R2, capacitor C1 and the infrared The signal output end of the temperature sensor, the other end of the resistor R2 and the capacitor C1 is grounded, the collector of the transistor Q1 is connected to one end of the resistor R3, the capacitor C2 and C3, the other end of the resistor R1, R3 and the capacitor C2 is connected to the +5V power supply, and the capacitor C3 The other end of the transistor Q1 is grounded, and the emitter of the transistor Q1 is grounded through the resistor R4. 3. water-soluble fertilizer reactor monitoring system according to claim 2, is characterized in that: described signal amplification compensation circuit comprises operational amplifier AR1, and the non-inverting input end of operational amplifier AR1 connects the cathode of diode D1 and the cathode of diode D1 through resistance R5. The collector of the transistor Q1 is grounded through the parallel resistor R6 and the capacitor C4, the anode of the diode D1 is grounded, the inverting input terminal of the operational amplifier AR1 is connected to the output terminal of the operational amplifier AR1 through the parallel resistor R8 and the capacitor C5, and Ground through resistor R7. 4. water-soluble fertilizer reactor monitoring system according to claim 3, is characterized in that: described stable amplitude circuit comprises triode Q2, and the collector of triode Q2 connects the output end of operational amplifier AR1 and one end of resistance R9, The base of the transistor Q2 is connected to the other end of the resistor R9 and the cathode of the Zener diode DZ1, the emitter of the transistor Q2 is connected to one end of the capacitor C6 and the non-inverting input of the operational amplifier AR2, the anode of the Zener diode DZ1 is connected to the other side of the capacitor C6 One end is grounded in parallel, and the inverting input end of the operational amplifier AR2 is connected to the output end of the operational amplifier AR2 and the input end of the controller through the resistor R10. 5. The water-soluble fertilizer reactor monitoring system according to claim 4, wherein an electronic touch screen is provided on the outer wall of the kettle, and the electronic touch screen is connected to the controller through a serial port.

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