Signal control module and hydrogen production equipment

Abstract

The application relates to the technical field of signal detection, and discloses a signal control module with reliable leakage detection, which comprises a voltage stabilizing circuit (100), a detection circuit (200) and a master controller (MCU). The detection circuit (200) compares a current signal with a preset current value, and outputs an electric signal according to the comparison result. The master controller (MCU) is used for receiving the electric signal, and judging whether the load leaks according to the state of the electric signal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of signal detection, more particularly to a signal control module and a hydrogen production device. BACKGROUND

[0002] The hydrogen production device is a commonly used electrolytic hydrogen production equipment in daily life. Pure water is electrolyzed by an internal membrane electrode to produce hydrogen and oxygen. The hydrogen gas output by the electrolysis assembly is transported to the hydrogen outlet through a pipeline for users to use. When the electrolysis assembly leaks, the proton exchange membrane of the electrolysis assembly may be broken, causing the hydrogen production of the electrolysis assembly to decrease. Currently, the leakage of the electrolyte circulation system can be measured. The measurement method includes finding the midpoint tank of the electrolysis tank column, connecting a wire to the collection tank at the circulation pipeline of the midpoint tank, and measuring the voltage drop with a multimeter (or voltmeter) and a suitable length of wire. However, the leakage measurement of the electrolyte circulation system can measure the leakage of high-power electrolysis tanks to some extent, but the process of detecting leakage and converting results in low-power devices (such as portable hydrogen suction machines or hydrogen-rich water machines) is relatively complex.

[0003] Therefore, how to improve the convenience and reliability of the electrolysis assembly leakage detection system has become a technical problem that technicians in the field need to solve. SUMMARY

[0004] The technical problem to be solved by the present application is that the above-mentioned leakage measurement of the electrolyte circulation system can measure the leakage of high-power electrolysis tanks to some extent, but the process of detecting leakage and converting results in low-power devices (such as portable hydrogen suction machines or hydrogen-rich water machines) is relatively complex. The present application provides a signal control module and a hydrogen production device that is more reliable in leakage detection.

[0005] The technical solution adopted by the present application to solve the technical problem is to construct a signal control module, which has:

[0006] A voltage stabilizing circuit configured in the power module, used to receive an input power signal and perform voltage stabilization processing on the power signal;

[0007] A detection circuit provided with a current preset value,

[0008] The input end of the detection circuit is connected to one end of the voltage stabilizing circuit, used to obtain the current signal processed by the voltage stabilizing circuit, compare the current signal with the current preset value, and output an electrical signal according to the comparison result;

[0009] A main controller with an input end connected to the output end of the detection circuit, used to receive the electrical signal and determine whether the load is leaking according to the state of the electrical signal.

[0010] In some embodiments, the voltage stabilizing circuit comprises a first comparison module and a switch module,

[0011] An input terminal of the first comparison module is connected with a power signal terminal,

[0012] An input terminal of the switch module is connected with the power signal terminal,

[0013] Another input terminal of the switch module is connected with another power signal terminal and an output terminal of the first comparison module,

[0014] Output terminals of the switch module are respectively connected with the output terminal of the first comparison module and an input terminal of the detection circuit.

[0015] In some embodiments, the first comparison module comprises a first comparator and a first adjustable resistor,

[0016] A non-inverting terminal of the first comparator is connected with one end of the first adjustable resistor,

[0017] An inverting terminal of the first comparator is connected with the power signal terminal,

[0018] An output terminal of the first comparator is connected with another input terminal of the switch module,

[0019] Another end of the first adjustable resistor is coupled with output terminals of the switch module.

[0020] In some embodiments, the switch module comprises at least a MOS transistor,

[0021] A gate of the MOS transistor is connected with the another power signal terminal and the output terminal of the first comparator,

[0022] A source of the MOS transistor is connected with the power signal terminal,

[0023] A drain of the MOS transistor is respectively connected with another end of the first adjustable resistor and the input terminal of the detection circuit.

[0024] In some embodiments, the detection circuit comprises a leakage detection module and a second comparison module,

[0025] Input terminals of the leakage detection module are connected with the drain of the MOS transistor, for obtaining the current signal,

[0026] Input terminals of the second comparison module are connected with output terminals of the leakage detection module, for comparing the current signal with a current preset value, and outputting the electric signal according to a comparison result,

[0027] An output terminal of the second comparison module is coupled to an input terminal of the main controller.

[0028] In some embodiments, the leakage detection module comprises at least a second adjustable resistor, an eighth resistor and a ninth resistor,

[0029] The eighth resistor and the ninth resistor are connected in series,

[0030] Connection terminals of the eighth resistor and the ninth resistor are connected to an input terminal of the second comparison module,

[0031] A first terminal of the second adjustable resistor is connected to one terminal of the eighth resistor through a fifth resistor,

[0032] A second terminal of the second adjustable resistor is connected to one terminal of the ninth resistor through a sixth resistor and a seventh resistor connected in series,

[0033] A third terminal of the second adjustable resistor is connected to another input terminal of the second comparison module.

[0034] In some embodiments, the second comparison module comprises at least a second comparator and a third comparator,

[0035] A non-inverting terminal of the second comparator is connected to the connection terminals of the eighth resistor and the ninth resistor through a tenth resistor,

[0036] An inverting terminal of the second comparator is connected to the third terminal of the second adjustable resistor through an eleventh resistor,

[0037] A non-inverting terminal of the third comparator is connected to an output terminal of the second comparator,

[0038] An inverting terminal of the third comparator is connected to a 5V power supply terminal,

[0039] An output terminal of the third comparator is connected to the input terminal of the main controller through a sixteenth resistor.

[0040] In some embodiments, the second comparison module further comprises a voltage dividing circuit,

[0041] One terminal of the voltage dividing circuit is connected to the 5V power supply terminal,

[0042] Another terminal of the voltage dividing circuit is connected to the inverting terminal of the third comparator,

[0043] A third terminal of the voltage dividing circuit is connected to a common terminal.

[0044] In some embodiments, the voltage dividing circuit comprises a fourteenth resistor and a fifteenth resistor connected in series,

[0045] One end of the fourteenth resistor is connected with a 5V power supply end,

[0046] One end of the fifteenth resistor is connected with a common end,

[0047] The other end of the fourteenth resistor and the fifteenth resistor is connected with an inverting end of the third comparator.

[0048] In a second aspect, a hydrogen production device comprises the signal control module, and the signal control module is used for detecting and judging whether the load is electrified.

[0049] In the signal control module, a voltage stabilizing circuit, a detection circuit and a master controller are included, the detection circuit compares the current signal with a preset current value and outputs an electric signal according to the comparison result, and the master controller receives the electric signal and judges whether the load is electrized according to the state of the electric signal. Compared with the prior art, the electrolytic tank is continuously monitored by the built-in detection module to obtain the working current signal, the current signal is compared and analyzed, a high / low level signal is output according to the comparison and analysis result, and whether the load is electrized is judged by the input high / low level signal, so that the problem that the process of detecting the electrization of the electrolyte circulating system and the conversion result of the small power device (such as a portable hydrogen suction machine or a hydrogen-rich water machine) is relatively complex can be effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0050] The application will be further described below in combination with the drawings and embodiments, and the drawings are as follows:

[0051] Figure 1 is a circuit schematic diagram of an embodiment of the voltage stabilizing circuit provided by the application;

[0052] Figure 2 is a circuit schematic diagram of an embodiment of the detection circuit provided by the application. DETAILED DESCRIPTION

[0053] In order to have a clearer understanding of the technical features, objects and effects of the application, the specific embodiments of the application will be described in detail with reference to the drawings.

[0054] As Figures 1-2 shown, in the first embodiment of the signal control module of the application, the signal control module at least comprises a voltage stabilizing circuit 100, a detection circuit 200 and a master controller MCU,

[0055] The voltage stabilizing circuit 100 is used for receiving the power supply signal input by the previous stage circuit and performing voltage stabilizing / amplifying processing on the input power supply signal, for example, when the input voltage changes in the range of 5-35V, the output is stabilized at 5±0.05V;

[0056] The detection circuit 200 has the functions of signal detection and comparison;

[0057] The master MCU has the functions of signal receiving, analysis and operation, and outputting at least one PWM pulse signal;

[0058] Specifically, the voltage stabilizing circuit 100 is configured in the power module, which is used to receive the power signal (such as 5-35V) input by the front-stage circuit, and perform voltage stabilizing processing on the power signal, and then output to the load to drive the load to work.

[0059] The detection circuit 200 is provided with a current preset value (such as 4.6V),

[0060] The input end of the detection circuit 200 is connected with one end of the voltage stabilizing circuit 100, which is used to obtain the current signal processed by the voltage stabilizing circuit 100, and it should be noted that the current signal is the current signal obtained when the load works,

[0061] The detection circuit 200 compares the obtained current signal with the current preset value, and outputs an electric signal (high / low level) according to the comparison result, and then outputs the electric signal (high / low level) to the master MCU.

[0062] The input end of the master MCU is connected with the output end of the detection circuit 200, which is used to receive the electric signal, and when the input electric signal is high level, the master MCU judges that the load is in normal state according to the high level signal.

[0063] When the input electric signal is low level, the master MCU judges that the load is in leakage state according to the low level signal, and the master MCU closes the output of the PWM pulse signal according to the current state to control the load to stop working.

[0064] By using the technical solution, the load (electrolytic cell) is continuously monitored by the built-in detection module, the working current signal is obtained, the current signal is compared and analyzed, the high / low level signal is output according to the comparison and analysis result, and whether the load leaks is judged through the input high / low level signal, which can effectively solve the problem that the process of detecting the leakage of the electrolyte circulating system on the small power equipment (such as portable hydrogen suction machine or hydrogen-rich water machine) and the conversion result is relatively complex.

[0065] In some embodiments, as shown in Figure 1 In order to ensure the stability of the output voltage signal, the first comparison module 110 and the switch module 120 can be arranged in the voltage stabilizing circuit 100,

[0066] The first comparison module 110 is used for signal comparison and output of corresponding level signal,

[0067] The switch module 120 is used for controlling the on-off state of the power signal.

[0068] Specifically, an input end of the first comparison module 110 is connected with a power signal end (corresponding to A0) for receiving a power signal,

[0069] An input end of the switch module 120 is connected with the power signal end (corresponding to A0) for receiving the power signal,

[0070] Another input end of the switch module 120 is connected with another power signal end (corresponding to 5V-35V end) and an output end of the first comparison module 110,

[0071] An output end of the switch module 120 is connected with the output end of the first comparison module 110 and an input end of the detection circuit 200 respectively.

[0072] When the output of the first comparison module 110 is low, the switch module 120 is controlled to be turned on, and the voltage signal output by the power signal end (corresponding to A0) is output to the load through the switch module 120.

[0073] In some embodiments, as shown in FIG. 1, in order to improve the reliability of controlling the switch module 120 to turn on / off, a first comparator U1A and a first adjustable resistor RP1 can be arranged in the first comparison module 110, Figure 1

[0074] The first comparator U1A has a signal comparison function and outputs a level signal according to the comparison result,

[0075] The first adjustable resistor RP1 is used to adjust the voltage value of the reference signal;

[0076] Specifically, the non-inverting end (corresponding to 3 pin) of the first comparator U1A is connected with one end of the first adjustable resistor RP1,

[0077] The one end of the first adjustable resistor RP1 is also connected with the common end through a second resistor R102,

[0078] The inverting end (corresponding to 2 pin) of the first comparator U1A is connected with the output end of a voltage stabilizing module U10, and the input end of the voltage stabilizing module U10 is connected with the power signal end (corresponding to A0). The voltage signal input by the power signal end (corresponding to A0) is processed by the voltage stabilizing module U10 for voltage stabilization, and then input to the inverting end (corresponding to 2 pin) of the first comparator U1A as a reference signal;

[0079] The output end (corresponding to 1 pin) of the first comparator U1A is connected with another input end of the switch module 120,

[0080] The other end of the first adjustable resistor RP1 is coupled to the output end of the switch module 120.

[0081] In some embodiments, as shown in FIG. 1, in order to improve the reliability of controlling the switch module 120 to turn on / off, a first comparator U1A and a first adjustable resistor RP1 can be arranged in the first comparison module 110, Figure 1 ​As shown, in order to improve the reliability of the output voltage signal on / off, the switch module 120 at least includes a MOS tube VT101,

[0082] The MOS tube VT101 is a P-channel MOS tube, which has the function of switching.

[0083] Specifically, the gate of the MOS tube VT101 is connected with another power signal end (corresponding to 5V-35V end) and the output end of the first comparator U1A (corresponding to 1 pin),

[0084] The source of the MOS tube VT101 is connected with the power signal end (corresponding to A0),

[0085] The drain of the MOS tube VT101 is connected with the other end of the first adjustable resistor RP1 and the input end of the detection circuit 200, respectively.

[0086] When the level of the inverting end (corresponding to 2 pin) of the first comparator U1A is higher than the level of the non-inverting end (corresponding to 3 pin), and the output end (corresponding to 1 pin) outputs low level, the gate level of the MOS tube VT101 is pulled to low level, the MOS tube VT101 is controlled to be turned on, and the voltage signal output by the power signal end (corresponding to A0) is output to the load through the source-drain of the MOS tube VT101.

[0087] In some embodiments, as shown, Figure 1 As shown, in order to improve the reliability of the current signal, a leakage detection module 210 and a second comparison module 220 can be arranged in the detection circuit 200,

[0088] The input end of the leakage detection module 210 is connected with the drain of the MOS tube VT101, for acquiring the current signal when the load works,

[0089] The input end of the second comparison module 220 is connected with the output end of the leakage detection module 210, compares the acquired current signal with the preset current value, and outputs the electric signal (high / low level) according to the comparison result,

[0090] The output end of the second comparison module 220 is coupled to the input end of the host controller MCU, and outputs the electric signal (high / low level) to the host controller MCU.

[0091] In some embodiments, as shown, Figure 2 As shown, in order to improve the reliability of the current signal, a second adjustable resistor RP2, an eighth resistor R204 and a ninth resistor R205 can be arranged in the leakage detection module 210,

[0092] The eighth resistor R204 and the ninth resistor R205 are connected in series, for acquiring the current signal when the load works,

[0093] The connection end of the eighth resistor R204 and the ninth resistor R205 is connected with an input end of the second comparison module 220, and the obtained current signal is input to the input end of the second comparison module 220,

[0094] The first end of the second adjustable resistor RP2 is connected with one end of the eighth resistor R204 through the fifth resistor R201,

[0095] The second end of the second adjustable resistor RP2 is connected with one end of the ninth resistor R205 through the sixth resistor R202 and the seventh resistor R203 connected in series,

[0096] The third end of the second adjustable resistor RP2 is connected with another input end of the second comparison module 220.

[0097] In some embodiments, as Figure 2 shown, in order to ensure the reliability of the output level signal, the second comparator U2A and the third comparator U2B can be arranged in the second comparison module 220,

[0098] The non-inverting end (corresponding to 3 pins) of the second comparator U2A is connected with the connection end of the eighth resistor R204 and the ninth resistor R205 through the tenth resistor R26, for receiving the current signal,

[0099] The inverting end (corresponding to 2 pins) of the second comparator U2A is connected with the third end of the second adjustable resistor RP2 through the eleventh resistor R207, for obtaining a reference signal,

[0100] When the current signal is greater than the reference signal, the second comparator U2A outputs a low level,

[0101] When the current signal is less than the reference signal, the second comparator U2A outputs a high level,

[0102] The non-inverting end (corresponding to 5 pins) of the third comparator U2B is connected with the output end (corresponding to 1 pin) of the second comparator U2A,

[0103] The inverting end (corresponding to 6 pins) of the third comparator U2B is connected with the 5V power supply end, for obtaining another reference signal,

[0104] When the output level signal of the second comparator U2A is greater than the other reference signal, the output is a high level,

[0105] When the output level signal of the second comparator U2A is less than the other reference signal, the output is a low level;

[0106] The output end (corresponding to 7 pins) of the third comparator U2B is connected with the input end of the host MCU through the sixteenth resistor R212.

[0107] When the electrical signal output by the second comparator U2A is at a high level, the level of the non-inverting terminal (corresponding to pin 5) of the third comparator U2B is higher than that of the inverting terminal (corresponding to pin 6), and the third comparator U2B outputs a high level,

[0108] The host MCU analyzes that the load is currently in a normal working state according to the input high level signal.

[0109] When the electrical signal output by the second comparator U2A is at a low level, the level of the inverting terminal (corresponding to pin 6) of the third comparator U2B is higher than that of the non-inverting terminal (corresponding to pin 5), and the third comparator U2B outputs a low level,

[0110] The host MCU judges that the load is in an electric leakage state according to the input low level signal, and the host MCU further closes the output of the PWM pulse signal according to the current state, thereby controlling the load to stop working.

[0111] In some embodiments, as shown in FIG. 2, the second comparison module 220 further includes a voltage dividing circuit. Figure 2 The one end of the voltage dividing circuit is connected with the 5V power supply end,

[0112] The other end of the voltage dividing circuit is connected with the inverting terminal (corresponding to pin 6) of the third comparator U2B,

[0113] The third end of the voltage dividing circuit is connected with the common end.

[0114] Specifically, the input 5V voltage signal is processed by the voltage dividing circuit and then input to the inverting terminal (corresponding to pin 6) of the third comparator U2B as a reference signal.

[0115] In some embodiments, as shown in FIG. 2, the voltage dividing circuit includes a fourteenth resistor R210 and a fifteenth resistor R211 connected in series. Figure 2

[0116] The one end of the fourteenth resistor R210 is connected with the 5V power supply end,

[0117] The one end of the fifteenth resistor R211 is connected with the common end,

[0118] The other ends of the fourteenth resistor R210 and the fifteenth resistor R211 are connected with the inverting terminal (corresponding to pin 6) of the third comparator U2B.

[0119] Specifically, the input 5V voltage signal is processed by the fourteenth resistor R210 and the fifteenth resistor R211, and then input to the inverting terminal (corresponding to pin 6) of the third comparator U2B as a reference signal.

[0120] ​For example, when the input voltage is 5V, the output voltage is not less than 4.5V, the voltage across the eighth resistor R204 and the ninth resistor R205 is at most 0.5V, the normal working current of the leakage detection module 210 is about 250mV, and the eighth resistor R204 and the ninth resistor R205 are calculated to be not more than 1.6Ω, the obtained electric signal is compared by the second comparator U2A and the third comparator U2B, and the main controller MCU judges whether the load exists leakage or the size of the leakage current.

[0121] In a second aspect, a hydrogen production device comprises the signal control module (100, 200) described above, and the signal control module (100, 200) is used to detect and judge whether the load is leaked.

[0122] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are only illustrative but not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and these all belong to the protection of the present application.

Claims

1. A signal control module, characterized by, Possessing: A voltage stabilizing circuit configured in a power module, for receiving an input power signal and performing voltage stabilization processing on the power signal; A detection circuit provided with a current preset value, The input end of the detection circuit is connected with one end of the voltage stabilizing circuit, for obtaining the current signal processed by the voltage stabilizing circuit, comparing the current signal with the current preset value, and outputting an electric signal according to the comparison result; A main controller, the input end of which is connected with the output end of the detection circuit, for receiving the electric signal and judging whether the load is electrified according to the state of the electric signal; The voltage stabilizing circuit comprises a first comparison module and a switch module, One input end of the first comparison module is connected with a power signal end, One input end of the switch module is connected with the power signal end, The other input end of the switch module is connected with another power signal end and the output end of the first comparison module, The output end of the switch module is connected with the output end of the first comparison module and the input end of the detection circuit respectively; The switch module at least comprises a MOS tube, The gate of the MOS tube is connected with the other power signal end and the output end of the first comparator, The source of the MOS tube is connected with the power signal end, The drain of the MOS tube is connected with the other end of the first adjustable resistance and the input end of the detection circuit respectively; The detection circuit comprises a leakage detection module and a second comparison module, The input end of the leakage detection module is connected with the drain of the MOS tube, for obtaining the current signal, The input end of the second comparison module is connected with the output end of the leakage detection module, for comparing the current signal with the current preset value and outputting the electric signal according to the comparison result, The output end of the second comparison module is coupled to the input end of the main controller; The leakage detection module at least comprises a second adjustable resistance, an eighth resistance and a ninth resistance, The eighth resistance and the ninth resistance are connected in series, The connection end of the eighth resistance and the ninth resistance is connected with one input end of the second comparison module, The first end of the second adjustable resistance is connected with one end of the eighth resistance through a fifth resistance, The second end of the second adjustable resistance is connected with one end of the ninth resistance through a sixth resistance and a seventh resistance connected in series, The third end of the second adjustable resistance is connected with the other input end of the second comparison module; The second comparison module at least comprises a second comparator and a third comparator, The non-inverting input end of the second comparator is connected with the connection end of the eighth resistance and the ninth resistance through a tenth resistance, The inverting input end of the second comparator is connected with the third end of the second adjustable resistance through an eleventh resistance, The non-inverting input end of the third comparator is connected with the output end of the second comparator, The inverting input end of the third comparator is connected with a 5V power end, The output end of the third comparator is connected with the input end of the main controller through a sixteenth resistance.

2. The signal control module according to claim 1, wherein The first comparison module comprises a first comparator and a first adjustable resistance, The non-inverting terminal of the first comparator is connected with one end of the first adjustable resistor, The inverting terminal of the first comparator is connected with the power signal terminal, The output terminal of the first comparator is connected with another input terminal of the switch module, The other end of the first adjustable resistor is coupled with the output terminal of the switch module.

3. The signal control module according to claim 2, wherein, The second comparison module further comprises a voltage dividing circuit, One end of the voltage dividing circuit is connected with the 5V power terminal, The other end of the voltage dividing circuit is connected with the inverting terminal of the third comparator, The third terminal of the voltage dividing circuit is connected with the common terminal.

4. The signal control module according to claim 3, wherein, The voltage dividing circuit comprises a fourteenth resistor and a fifteenth resistor connected in series, One end of the fourteenth resistor is connected with the 5V power terminal, One end of the fifteenth resistor is connected with the common terminal, The other ends of the fourteenth resistor and the fifteenth resistor are connected with the inverting terminal of the third comparator.

5. A hydrogen production apparatus, characterized by comprising: The signal control module according to any one of claims 1-4 is used for detecting and judging whether the load is electrified or not.

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