Detection system for dangerous liquid in metal tank

Abstract

The utility model relates to the technical field of dangerous liquid detection, and discloses a metal can dangerous liquid detection system, the detection system comprises a main control system, the main control system is electrically connected with a proximity switch circuit and a power supply module circuit, the proximity switch circuit detects liquid to be detected, and the power supply module circuit is electrically connected with the power supply module circuit. According to the detection system for the dangerous liquid in the metal tank, the heating of current can be accurately controlled through the arrangement of the detection system for the dangerous liquid in the metal tank; a high-precision temperature measuring circuit with compensation; a wiring switch and a temperature measuring element circuit used for detecting the real-time temperature of a metal tank body are used for monitoring the real-time temperature of the tank body, the danger of liquid in the tank body is judged according to the temperature rise of the tank body, conventional dangerous liquid is flammable and explosive, the temperature rise is large when the liquid is heated, and when the liquid in the tank body is safe liquid, the temperature rise of the liquid is low, and the liquid is greatly different from the dangerous liquid. The method is used for distinguishing safe and dangerous liquids.

Description

Technical Field

[0001] The utility model relates to the technical field of dangerous liquid detection, in particular to a dangerous liquid detection system for metal tanks. Background Art

[0002] In daily life, various containers of liquid beverages are mainly divided into two categories according to the material properties, one is non-metallic containers and the other is metal containers. Due to the different materials of the containers, the detection methods used are also different. For the detection of liquids in non-metallic containers, the relatively mature and reliable microwave reflection method is currently mainly used domestically and internationally, while for the detection of liquids in metal containers, the thermal conductivity method is mainly used.

[0003] In the process of actually detecting hazardous liquids with the existing technology, if low-precision heating devices are used to heat them, the hazardous liquids are easily affected by the high temperature, causing abnormal temperature rise and explosion, which poses certain safety hazards. In view of this, we propose a hazardous liquid detection system for metal cans. Utility Model Content

[0004] The purpose of the utility model is to provide a dangerous liquid detection system for metal tanks to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dangerous liquid detection system for metal cans, the detection system comprising a main control system, the main control system is electrically connected to a proximity switch circuit and a power module circuit, the proximity switch circuit detects the liquid to be detected, the power module circuit supplies electrical energy to the circuit, the proximity switch circuit is point-connected to a temperature measurement circuit, the temperature measurement circuit measures the temperature of the liquid to be detected, the main control system is electrically connected to a heating element circuit, and the heating element circuit heats the liquid to be detected.

[0006] Optionally, the proximity switch circuit includes a wiring terminal DG, a terminal 3 of the wiring terminal DG is electrically connected to one end of a resistor R1, the other end of the resistor R1 is electrically connected to a +12V terminal, a terminal 2 of the wiring terminal DG is electrically connected to one end of a resistor R2, and the other end of the resistor R2 is electrically connected to a terminal 1 of a wiring switch Q.

[0007] Optionally, the heating element circuit includes two groups of thermistors D, one end of one group of thermistors D is electrically connected to end 1 of the wiring terminal J, and the other end is grounded, and the other end of the thermistors D is electrically connected to end 2 of the wiring terminal J, and the other end is grounded.

[0008] Optionally, the power module includes an inductor B7, one end of the inductor B7 is electrically connected to the +3.3VADC terminal, and the other end is electrically connected to the 5 terminal of the power management chip U7, the 2 terminal of the power management chip U7 is electrically connected to one end of the capacitor C, and the other end of the capacitor C and the 1 terminal of the power management chip U7 are both electrically connected to the +5V terminal.

[0009] Optionally, the temperature measurement circuit includes an SP13_SCK terminal and an SP13_MISO terminal, and the SP13_SCK terminal and the SP13_MISO terminal are electrically connected to terminal 1 and terminal 2 of chip U respectively.

[0010] Compared with the prior art, the utility model provides a dangerous liquid detection system for metal tanks, which has the following beneficial effects:

[0011] The hazardous liquid detection system for metal tanks is provided with a heating device that can accurately control the current; a high-precision temperature measurement circuit with compensation; a wiring switch for detecting the metal tank body, and a temperature measurement element circuit for monitoring the real-time temperature of the tank body. The hazardousness of the liquid in the tank is determined according to the temperature rise of the tank body. Conventional hazardous liquids are flammable and explosive, and when heated, there will be a large temperature rise. When the liquid in the tank is a safe liquid, the liquid temperature rise is lower, which is quite different from that of hazardous liquids, and is used to distinguish between safe and hazardous liquids. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the proximity switch circuit of the utility model;

[0013] Figure 2 This is a schematic diagram of the circuit structure of the heating element of the utility model;

[0014] Figure 3 This is a schematic diagram of the circuit structure of the power module of the utility model;

[0015] Figure 4 This is a schematic diagram of the circuit structure of the temperature measuring element of the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figure 1-Figure 4As shown, the utility model provides a technical solution: a dangerous liquid detection system for metal tanks, the detection system includes a main control system, the main control system is electrically connected with a proximity switch circuit and a power module circuit, the proximity switch circuit detects the liquid to be detected, the power module circuit supplies electrical energy to the circuit, the proximity switch circuit is point-connected with a temperature measuring circuit, the temperature measuring circuit measures the temperature of the liquid to be detected, the main control system is electrically connected with a heating element circuit, and the heating element circuit heats the liquid to be detected.

[0018] The proximity switch circuit includes a wiring terminal DG, a terminal 3 of which is electrically connected to one end of a resistor R1, the other end of the resistor R1 is electrically connected to a +12V terminal, a terminal 2 of which is electrically connected to one end of a resistor R2, and the other end of the resistor R2 is electrically connected to a terminal 1 of a wiring switch Q.

[0019] The heating element circuit includes two groups of thermistors D, one end of one group of thermistors D is electrically connected to end 1 of the wiring terminal J, and the other end is grounded, and one end of the other group of thermistors D is electrically connected to end 2 of the wiring terminal J, and the other end is grounded.

[0020] The power module includes an inductor B7, one end of which is electrically connected to the +3.3V ADC terminal, and the other end is electrically connected to the 5 terminal of the power management chip U7. The 2 terminal of the power management chip U7 is electrically connected to one end of the capacitor C, and the other end of the capacitor C and the 1 terminal of the power management chip U7 are both electrically connected to the +5V terminal.

[0021] The temperature measurement circuit includes an SP13_SCK terminal and an SP13_MISO terminal, and the SP13_SCK terminal and the SP13_MISO terminal are electrically connected to the 1 terminal and the 2 terminal of the chip U respectively.

[0022] As an application of this embodiment:

[0023] By placing the metal tank with hazardous liquid in the corresponding detection tank, fitting the metal tank tightly with the heating film and the temperature measuring element, the wiring switch Q senses whether the metal tank body exists, and after confirming that the state is stable, the test begins. The heating element heats the liquid in the tank by heat conduction. The temperature measuring element circuit is used to monitor the real-time temperature of the tank body, and the dangerousness of the liquid in the tank is determined according to the temperature rise of the tank body. Conventional hazardous liquids are flammable and explosive, and when heated, there will be a large temperature rise. When the liquid in the tank is a safe liquid, the liquid temperature rise is low, which is quite different from that of hazardous liquids, and is used to distinguish between safe and hazardous liquids.

[0024] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A detection system for dangerous liquids in metal tanks, characterized by: The detection system includes a main control system, to which a proximity switch circuit and a power module circuit are electrically connected. The proximity switch circuit detects the liquid to be detected, and the power module circuit supplies electrical energy to the circuit. The proximity switch circuit is electrically connected to a temperature measurement circuit, which measures the temperature of the liquid to be detected. The main control system is electrically connected to a heating element circuit, which heats the liquid to be detected.

2. A detection system for dangerous liquids in metal tanks according to claim 1, characterized in that: The proximity switch circuit includes a wiring terminal DG, a terminal 3 of which is electrically connected to one end of a resistor R1, the other end of the resistor R1 is electrically connected to a +12V terminal, a terminal 2 of which is electrically connected to one end of a resistor R2, and the other end of the resistor R2 is electrically connected to a terminal 1 of a wiring switch Q.

3. A detection system for dangerous liquids in metal tanks according to claim 1, characterized in that: The heating element circuit includes two groups of thermistors D, one end of the thermistor D of one group is electrically connected to end 1 of the terminal J, and the other end is grounded, and the other end of the thermistor D of the other group is electrically connected to end 2 of the terminal J, and the other end is grounded.

4. A metal tank hazardous liquid detection system according to claim 1, characterized in that: The power module includes an inductor B7, one end of which is electrically connected to the +3.3VADC terminal, and the other end is electrically connected to the 5 terminal of the power management chip U7. The 2 terminal of the power management chip U7 is electrically connected to one end of the capacitor C, and the other end of the capacitor C and the 1 terminal of the power management chip U7 are both electrically connected to the +5V terminal.

5. The system for detecting dangerous liquids in metal tanks according to claim 1, characterized in that: The temperature measurement circuit includes an SP13_SCK terminal and an SP13_MISO terminal, and the SP13_SCK terminal and the SP13_MISO terminal are electrically connected to the 1 terminal and the 2 terminal of the chip U respectively.

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