A KNX power supply system

Abstract

The present application discloses a KNX power supply system, comprising: a 220V AC input and a 30V DC output interface, a 12V power supply module, a short-circuit protection reset timing module, a button reset timing module, a 30V discharge module, a KNX power supply output control module and a circuit state indication module. The KNX power supply system converts 30VDC into KNX power supply output and signal transmission through the KNX power supply output control module through a common-mode inductor and a corresponding transistor switch circuit, and also has a 30VDC auxiliary power supply output. When an alarm signal ALARM is detected, a short-circuit protection function is realized by switching a relay, and a corresponding indicator light state is output through the transistor switch circuit.

Description

Technical Field

[0001] The present application relates to the technical field of power supply, and in particular to a KNX power supply system. Background Art

[0002] KNX power supply is a power supply device designed for KNX intelligent building control system, mainly used to provide stable and reliable DC power for KNX bus and various devices connected to the bus. KNX system is an open international standard widely used in smart home and building automation, which allows various devices such as lights, curtains, security systems, etc. to communicate and control through a bus.

[0003] Common KNX power supplies have different versions such as 160mA, 320mA and 640mA to adapt to KNX installation projects of different scales and requirements. For example, the 640mA version can usually support more device connections.

[0004] In summary, as the basic component of the KNX intelligent system, the KNX power supply not only provides basic power supply, but also supports the efficient and stable operation of the entire intelligent building system through its diverse functional design and safety measures. Given that the 640mA version can usually support more device connections, the development and upgrade of the 640mA version is particularly important. Therefore, a 640mA version of the KNX power supply system that can achieve short-circuit protection is expected by the market. Summary of the invention

[0005] The present application provides a KNX power supply system, which is a 640mA version of the KNX power supply system capable of achieving short-circuit protection.

[0006] The technical solution adopted by the present application to solve the technical problem is: to provide a KNX power supply system, including: 220V AC input 30V DC output interface, 12V power supply module, short circuit protection reset timing module, key reset timing module, 30V discharge module, KNX power supply output control module and circuit status indication module,

[0007] The 12V power supply module is connected to the 220V AC input and 30V DC output interface to input 30V and output 12V power supply to power other modules. The short-circuit protection reset timing module is connected to the 12V power supply module and the key reset timing module. When the alarm signal ALARM is detected, the short-circuit protection is realized by switching the relay. The key reset timing module collects the reset signal through the reset button, and gives the timing chip as a trigger signal to generate the alarm signal ALARM for timing reset. The 30V discharge module is connected to the key reset timing module and the KNX power output control module. When the 30V discharge module detects the alarm signal ALARM, the Mos tube is turned on to discharge 30VDC. The KNX power output control module includes a first output end and a second output end. The first output end realizes KNX bus signal transmission and power supply through a common mode inductor and related circuits. The second output end provides 30VDC for auxiliary power supply, and receives the alarm signal ALARM to realize short-circuit protection. The circuit status indication module is connected to the KNX power output control module. After receiving the corresponding indicator light status, the circuit status indication module indicates the corresponding status through a light-emitting diode.

[0008] Preferably, the 12V power supply module includes a switching power supply chip U4, a resistor R47, a resistor R48, a resistor R49, a resistor R50, a resistor R51, a diode D7, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14 and an inductor L2, and the fifth end of P2 of the 220V AC input 30V DC output interface is respectively connected to the second end of capacitor C10, the second end of capacitor C11 and the second end of capacitor C13, and the second end of capacitor C10, the second end of capacitor C11 and the second end of capacitor C13 are filtered and connected to the first end of resistor R47, the first end of resistor R48, the first end of resistor R49 and the sixth end of the switching power supply chip U4, the first end of capacitor C10, the first end of capacitor C11 and The first end of capacitor C13 is grounded, the second ends of resistors R47, R48 and R49 are connected to the seventh and eighth ends of the switching power supply chip U4, the second end of resistor R50 is grounded, the first end of resistor R51 is connected to +12V, the first end of resistor R50 and the second end of resistor R51 form a voltage divider circuit to provide feedback sampling to the fifth end of the switching power supply chip U4, the third end of the switching power supply chip U4 is connected to the second end of capacitor C12, the first end of capacitor C12 is grounded, the second end of the switching power supply chip U4 outputs power to the K pole of diode D7 and the first end of inductor L2, the A pole of diode D7 is grounded, the second end of inductor L2 is connected to the second end of capacitor C14 and outputs to +12V after filtering, and the first end of capacitor C14 is grounded.

[0009] Preferably, the short circuit protection reset timing module includes an op amp chip U1A, an op amp chip U1B, an op amp chip U1C, a voltage reference chip U3, a timing chip U5, a resistor R12, a resistor R13, a resistor R15, a resistor R16, a resistor R17, a resistor R19, a resistor R20, a resistor R21, a resistor R23, a resistor R26, a resistor R27, a resistor R31, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C15, a capacitor C17, a capacitor C18, a capacitor C19, a capacitor C30 and a diode D8, the second end of the resistor R12 and the first end of the resistor R13 are connected to the second end of the capacitor C4, the first end of the resistor R12 is grounded, and the second end of the resistor R13, the resistor C3, the first end of the resistor R13, the second end of the resistor C3, the resistor C4 ... The second end of resistor R16 and the second end of capacitor C5 are connected to the third end of op amp chip U1A, the second end of capacitor C4, the first end of capacitor C5 and the first end of resistor R16 are grounded, the second end of resistor R19 and the second end of resistor R17 are connected to the second end of op amp chip U1A, the first end of resistor R19 is grounded, the first end of resistor R17 and the first end of resistor R15 are connected to the first end of op amp chip U1A, the second end of resistor R15 and the second end of capacitor C3 are connected to the sixth end of op amp chip U1B, the first end of capacitor C3 is grounded GND1, the second end of resistor R20 is connected to +12V, the first end of resistor R20 and the second end of resistor R21 are connected to the first end of voltage reference chip U3 and the second end of voltage reference chip U3, the voltage reference chip The third end of U3 and the first end of resistor R23 are grounded, the first end of resistor R21 and the second end of resistor R23 divide the voltage to generate a reference level and input it to the tenth end of op amp chip U1C, the second end of capacitor C8 and the second end of capacitor C30 filter +12V and connect to the fourth end of op amp chip U1C, the first end of capacitor C8 and the first end of capacitor C30 are connected to ground, the ninth and eighth ends of op amp chip U1C and the fifth end of op amp chip U1B are connected to the second end of capacitor C7, the first end of capacitor C7 is grounded, the compared signal is output to the second end of resistor R27 and the second end of timing chip U5 through the seventh end of op amp chip U1B for triggering, the first end of resistor R27 and the first end of resistor R31 are connected to +12V as pull-up resistors, and resistor R The second end of 31 and the second end of capacitor C19 are connected to the reset pin of the fourth end of timing chip U5, the first end of capacitor C19 is grounded, the fifth end of timing chip U5 is connected to the second end of capacitor C15, the first end of timing chip U5 and the first end of capacitor C15 are grounded, the second end of capacitor C9 is connected to the eighth end of timing chip U5 for filtering +12V, the first end of capacitor C9 is grounded, the first end of resistor R26 is connected to +12V, the second end of resistor R26 and the second end of capacitor C17 and the second end of capacitor C18 are connected to the seventh end of timing chip U5, the first end of capacitor C17 and the first end of capacitor C18 are grounded, the third end of timing chip U5 outputs the alarm signal ALARM to the A pole of diode D8, and the ALARM pin is output by the K pole of diode D8.

[0010] Preferably, the button reset timing module includes a timing chip U6, a reset button K2, a resistor R29, a resistor R30, a resistor R32, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23 and a diode D10, the first end of the reset button K2 is grounded, the second end of the reset button K2 is connected to the first end of the resistor R30, the second end of the resistor R30 and the first end of the resistor R32 are connected to 12V as a pull-up resistor, the second end of the resistor R32 and the second end of the capacitor C23 are connected to the reset pin of the fourth end of the timing chip U6, the first end of the capacitor C23 is grounded, the fifth end of the timing chip U6 is connected to the second end of the capacitor C20, the first end of the timing chip U6 and the first end of the capacitor C20 are grounded, the first end of the resistor R29 is connected to +12V, the second end of the resistor R29 and the second end of the capacitor C21 and the second end of the capacitor C22 are connected to the seventh end of the timing chip U6, the first end of the capacitor C21 and the first end of the capacitor C22 are grounded, the third end of the chip U6 outputs an alarm signal to the A pole of the diode D10, and the K pole of the diode D10 outputs ALARM.

[0011] Preferably, the 30V discharge module includes a resistor R40, a resistor R41, and a MOS tube Q10, the first end of the resistor R40 is connected to ALARM, the second end of the resistor R40 is connected to the G pole of the MOS tube Q1, the second end of the resistor R41 is connected to +30V, the first end of the resistor R41 is connected to the D pole of the MOS tube Q10, and the S pole of the MOS tube Q10 is grounded.

[0012] Preferably, the KNX power output control module includes a resistor R1, a resistor R2, a resistor R3, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R14, a resistor R18, a resistor R22, a resistor R24, a resistor R25, a resistor R28, a capacitor C1, a capacitor C2, a capacitor C6, an inductor L1, a diode D3, a diode D5, a diode D6, a diode D15, a diode D9, a TVS bidirectional diode D1, a TVS bidirectional diode D2, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a transistor Q5, a transistor Q6, a relay K1, a terminal J5 and a terminal J7, a sixth terminal of the relay K1 and a TVS bidirectional The K pole of diode D1 is connected to +30V, the A pole of TVS bidirectional diode D1 is grounded, the seventh end of relay K1 is connected to the fourth end of inductor L1, the first end of resistor R11, the second end of resistor R18 and the A pole of diode D5, the second end of resistor R11 is connected to the B pole of transistor Q5, the second end of resistor R14 and the first end of capacitor C2 are connected to the C pole of transistor Q5, the second end of capacitor C2 and the K pole of diode D5 are connected to the E pole of transistor Q5, the first end of resistor R14 is connected to the second end of resistor R18, the first end of resistor R18 is connected to the ninth end of inductor L1, the positive pole of KNX power supply is output +30_V3, the tenth end of inductor L1 is grounded, the first end of capacitor C6 and the second end of resistor R25 are connected to transistor Q6 The C pole of the resistor R25 is grounded to GND, the second end of the capacitor C6 and the K pole of the diode D6 are connected to the E pole of the transistor Q6, the B pole of the transistor Q6 is connected to the second end of the resistor R22, the first end of the resistor R24 ​​is grounded, the second end of the resistor R24, the first end of the resistor R22 and the A pole of the diode D6 are connected to the third end of the inductor L1, the negative pole of the KNX power supply is output +30G, the first end of the terminal J7 is connected to +30V_3, the positive pole of KNX is output, the second end of the terminal J7 is connected to +30G, the negative pole of KNX is output, the first end of the terminal J5 and the first end of the capacitor C1 are grounded, the negative pole of the auxiliary power supply is output, the second end of the capacitor C1 and the A pole of the diode D15 are connected to +30_2, and the second end of the terminal J5 is connected To the K pole of diode D15, output the positive pole of auxiliary power supply, the second end of resistor R28 is connected to +30V_3, the third end of diode D9 is connected to the first end of resistor R28, the fourth end of diode D9 is grounded, the second end of relay K1 is grounded GND, the second end of resistor R1, the second end of resistor R2 and the K pole of TVS bidirectional diode D2 are connected to the third end of relay K1, the first end of resistor R1, the first end of resistor R2 and the A pole of TVS bidirectional diode D2 are grounded, the first end of relay K1, the K pole of diode D3 and the second end of resistor R6 are connected to +12V, the first end of resistor R6 is connected to the first end of diode D9, the second end of diode D9, the A pole of diode D3 and the eighth end of relay K1 are connected to the C pole of transistor Q1,The first end of resistor R3, the second end of resistor R7 and the second end of resistor R8 are connected to ALARM, the second end of resistor R3 is connected to the B pole of transistor Q1, the E pole of transistor Q1 is grounded, the first end of resistor R7 is connected to the B pole of transistor Q2, the first end of resistor R9 is connected to +12V, the second end of resistor R9 and the second end of resistor R10 are connected to the C pole of transistor Q2, the first end of resistor R10 is connected to the B pole of transistor Q4, the E pole of transistor Q2 and the E pole of transistor Q4 are grounded, the C pole of transistor Q4 is connected to LED_RUN, indicating that the power supply is running normally, the first end of resistor R8 is connected to the B pole of transistor Q3, the E pole of transistor Q3 is grounded, and the C pole of transistor Q3 is connected to LED_ERR, indicating that the power supply is running abnormally and is in a reset state.

[0013] Preferably, the circuit status indication module includes a resistor R4, a resistor R5 and a diode D18, the first end and the third end of the diode D18 are connected to +30V, the fourth end of the diode D18 is connected to the second end of the resistor R4, the first end of the resistor R4 is connected to LED_ERR, indicating that the power supply is operating abnormally and is in a reset state, the second end of the diode D18 is connected to the second end of the resistor R5, and the first end of the resistor R5 is connected to LED_RUN, indicating that the power supply is operating normally.

[0014] The substantial effect of this application is: this KNX power supply system converts 30VDC into KNX power output and signal transmission through the KNX power output control module through common-mode inductance and corresponding transistor switching circuit, and also has a 30VDC auxiliary power supply output. When the alarm signal ALARM is detected, the short-circuit protection function is realized by switching the relay, and the corresponding indicator light status is output through the transistor switching circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a module connection diagram of the KNX power supply system of this application;

[0016] Figure 2 This is a circuit connection diagram of the 220V AC input and 30V DC output interface of this application;

[0017] Figure 3 This is a circuit connection diagram of the 12V power module of this application;

[0018] Figure 4 It is a circuit connection diagram of the short circuit protection reset timing module of the present application;

[0019] Figure 5 This is a circuit connection diagram of the button reset timing module of this application;

[0020] Figure 6 This is a circuit connection diagram of the 30V discharge module of this application;

[0021] Figure 7 This is a circuit connection diagram of the KNX power output control module of this application;

[0022] Figure 8 It is a circuit connection diagram of the circuit status indication module of the present application. DETAILED DESCRIPTION

[0023] The technical solution of the present application is further described below through specific embodiments.

[0024] Embodiment 1

[0025] like Figure 1 As shown, an embodiment of the KNX power supply system of the present application includes: a 220V AC input 30V DC output interface, a 12V power supply module, a short circuit protection reset timing module, a button reset timing module, a 30V discharge module, a KNX power supply output control module and a circuit status indication module.

[0026] like Figure 2 and 3 As shown, the 12V power module generates +12V power by inputting +30V through the 220V AC input 30V DC output interface. The 12V power module includes a switching power chip U4, a current limiting resistor R47, a current limiting resistor R48, a current limiting resistor R49, a feedback sampling resistor R50, a feedback sampling resistor R51, a freewheeling diode D7, a filter capacitor C10, a filter capacitor C11, a timing capacitor C12, a filter capacitor C13, a filter capacitor C14 and an energy storage inductor L2. The fifth end +30V of P2 of the 220V AC input 30V DC output interface is connected to the first end of the resistor R47, the first end of the resistor R48, the first end of the resistor R49 and the sixth end of the switching power chip U4 through the second end of the capacitor C10, the second end of the capacitor C11 and the second end of the capacitor C13. The first end of the capacitor C10, the second end of the capacitor C11 and the second end of the capacitor C13 are filtered and connected to the first end of the resistor R47, the first end of the resistor R48, the first end of the resistor R49 and the sixth end of the switching power chip U4. The first end of the capacitor C10, the first end of the capacitor C11 and the second end of the capacitor C13 are filtered and connected to the first end of the resistor R47, the first end of the resistor R48, the first end of the resistor R49 and the sixth end of the switching power chip U4. One end and the first end of the capacitor C13 are grounded to GND1, the second ends of the resistor R47, the second ends of the resistor R48 and the second end of the resistor R49 are connected to the seventh end and the eighth end of the switching power supply chip U4, the second end of the resistor R50 is grounded to GND1, the first end of the resistor R51 is to +12V, the first end of the resistor R50 and the second end of the resistor R51 form a voltage divider circuit to provide feedback sampling to the fifth end of the switching power supply chip U4, the third end of the switching power supply chip U4 is connected to the second end of the capacitor C12, the first end of the capacitor C12 is grounded to GND1, the second end of the switching power supply chip U4 outputs power to the K pole of the diode D7 and the first end of the inductor L2, the A pole of the diode D7 is grounded to GND1, the second end of the inductor L2 is connected to the second end of the capacitor C14 and outputs to +12V after filtering, and the first end of the capacitor C14 is grounded to GND1.

[0027] like Figure 4As shown, the short circuit protection reset timing module is powered by a 12V power supply module. When a short circuit is detected, a trigger signal is output to the timer through the op amp comparator to generate a reset signal. The short circuit protection reset timing module includes an op amp chip U1A, an op amp chip U1B, an op amp chip U1C, a voltage reference chip U3, a timing chip U5, a resistor R12, a resistor R13, a resistor R15, a resistor R16, a resistor R17, a resistor R19, a resistor R20, a resistor R21, a resistor R23, a resistor R26, a resistor R27, a resistor R31, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C15, a capacitor C17, a capacitor C18, a capacitor C19, a capacitor C30 and a protection diode D8. The second end of the resistor R12 and the first end of the resistor R13 are connected to the second end of the capacitor C4, and the first end of the resistor R12 is grounded to GN. D, the second end of resistor R13, the second end of resistor R16 and the second end of capacitor C5 are connected to the third end of op amp chip U1A, the second end of capacitor C4, the first end of capacitor C5 and the first end of resistor R16 are grounded to GND1, the second end of resistor R19 and the second end of resistor R17 are connected to the second end of op amp chip U1A, the first end of resistor R19 is grounded to GND1, the first end of resistor R17 and the first end of resistor R15 are connected to the first end of op amp chip U1A, the second end of resistor R15 and the second end of capacitor C3 are connected to the sixth end of op amp chip U1B, the first end of capacitor C3 is grounded to GND1, the second end of resistor R20 is connected to +12V, the first end of resistor R20 and the second end of resistor R21 are connected to The first end of the voltage reference chip U3 and the second end of the voltage reference chip U3, the third end of the voltage reference chip U3 and the first end of the resistor R23 are grounded to GND1, the first end of the resistor R21 and the second end of the resistor R23 are divided to generate a reference level and input to the tenth end of the operational amplifier chip U1C, the second end of the capacitor C8 and the second end of the capacitor C30 are connected to the fourth end of the operational amplifier chip U1C after filtering +12V, the first end of the capacitor C8 and the first end of the capacitor C30 are connected to the ground GND1, the ninth end and the eighth end of the operational amplifier chip U1C and the fifth end of the operational amplifier chip U1B are connected to the second end of the capacitor C7, the first end of the capacitor C7 is grounded, and the compared signal is output to the second end of the resistor R27 via the seventh end of the operational amplifier chip U1B. And the second end of the timing chip U5 is triggered, the first end of the resistor R27 and the first end of the resistor R31 are connected to +12V as pull-up resistors, the second end of the resistor R31 and the second end of the capacitor C19 are connected to the reset pin of the fourth end of the timing chip U5, the first end of the capacitor C19 is grounded GND1, the fifth end of the timing chip U5 is connected to the second end of the capacitor C15, the first end of the timing chip U5 and the first end of the capacitor C15 are grounded GND1, the second end of the capacitor C9 is connected to the eighth end of the timing chip U5 for +12V filtering, the first end of the capacitor C9 is grounded, the first end of the resistor R26 is connected to +12V, the second end of the resistor R26 and the second end of the capacitor C17 and the second end of the capacitor C18 are connected to the seventh end of the timing chip U5,Their values ​​determine the alarm signal output time. The first end of capacitor C17 and the first end of capacitor C18 are grounded. The third end of timing chip U5 outputs the alarm signal ALARM to the A pole of diode D8, and the K pole of diode D8 outputs the ALARM pin.

[0028] like Figure 5 As shown, the button reset timing module is powered by a 12V power supply module. When it is detected that the reset button is pressed, the trigger signal to the timer generates a reset signal. The button reset timing module includes a timing chip U6, a reset button K2, a resistor R29, a resistor R30, a resistor R32, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23 and a protection diode D10. The first end of the reset button K2 is grounded, the second end of the reset button K2 is connected to the first end of the resistor R30, the second end of the resistor R30 and the first end of the resistor R32 are connected to 12V as a pull-up resistor, the second end of the resistor R32 and the second end of the capacitor C23 are connected to the reset pin of the fourth end of the timing chip U6, and the first end of the capacitor C23 is grounded G ND1, the fifth end of the timing chip U6 is connected to the second end of the capacitor C20, the first end of the timing chip U6 and the first end of the capacitor C20 are grounded, the first end of the resistor R29 is connected to +12V, the second end of the resistor R29 and the second end of the capacitor C21 and the second end of the capacitor C22 are connected to the seventh end of the timing chip U6, their values ​​determine the output time of the alarm signal, the first end of the capacitor C21 and the first end of the capacitor C22 are grounded GND1, the third end of the chip U6 outputs the alarm signal to the A pole of the diode D10, and the K pole of the diode D10 outputs ALARM.

[0029] like Figure 6 As shown, when the alarm signal ALARM is detected, the 30V discharge module turns on the MOS tube (the output circuit is cut off at this time) to discharge the discharge resistor. The 30V discharge module includes a resistor R40, a resistor R41, and a MOS tube Q10. The first end of the resistor R40 is connected to ALARM, the second end of the resistor R40 is connected to the G pole of the MOS tube Q1, the second end of the resistor R41 is connected to +30V, the first end of the resistor R41 is connected to the D pole of the MOS tube Q10, and the S pole of the MOS tube Q10 is grounded GND1.

[0030] like Figure 7As shown, the KNX power output control module has two output terminals, one realizes KNX bus signal transmission and power supply through common mode inductance and related circuits, and the other provides 30VDC for auxiliary power supply, and has the function of receiving ALARM alarm signal to realize short circuit protection. The KNX power output control module includes resistor R1, resistor R2, resistor R3, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, resistor R14, resistor R18, resistor R22, resistor R24, resistor R25, resistor R28, capacitor C1, capacitor C2, capacitor C6, common mode inductor L1, diode D3, diode D5, diode D6, diode D15, light emitting diode D9, TVS bidirectional diode D1, TVS bidirectional diode D2, transistor Q1, transistor Q2, transistor Q3, transistor Q4, transistor Q5, transistor Q6, short circuit protection relay K1, terminal Sub-J5 and terminal J7, the sixth end of relay K1 and the K pole of TVS bidirectional diode D1 are connected to +30V, the A pole of TVS bidirectional diode D1 is grounded GND1, the seventh end of relay K1 corresponding to output +30_2 is connected to the fourth end of inductor L1, the first end of resistor R11, the second end of resistor R18 and the A pole of diode D5, the second end of resistor R11 is connected to the B pole of transistor Q5, the second end of resistor R14 and the first end of capacitor C2 are connected to the C pole of transistor Q5, the second end of capacitor C2 and the K pole of diode D5 are connected to the E pole of transistor Q5, the first end of resistor R14 is connected to the second end of resistor R18, and the second end of resistor R18 is connected to the B pole of transistor Q5. One end is connected to the ninth end of the inductor L1, and the positive electrode of the KNX power supply is output +30_V3. The tenth end of the inductor L1 is grounded GND. The first end of the capacitor C6 and the second end of the resistor R25 are connected to the C electrode of the transistor Q6. The first end of the resistor R25 is grounded GND. The second end of the capacitor C6 and the K electrode of the diode D6 are connected to the E electrode of the transistor Q6. The B electrode of the transistor Q6 is connected to the second end of the resistor R22. The first end of the resistor R24 ​​is grounded GND. The second end of the resistor R24, the first end of the resistor R22 and the A electrode of the diode D6 are connected to the third end of the inductor L1, and the negative electrode of the KNX power supply is output +30G. The first end of the terminal J7 is connected to +30V_3, and the KNX is output. The positive pole, the second end of the terminal J7 is connected to +30G, the negative pole of KNX is output, the first end of the terminal J5 and the first end of the capacitor C1 are grounded GND, the negative pole of the auxiliary power supply is output, the second end of the capacitor C1 and the A pole of the diode D15 are connected to +30_2, the second end of the terminal J5 is connected to the K pole of the diode D15, the positive pole of the auxiliary power supply is output, the second end of the resistor R28 is connected to +30V_3, the third end of the diode D9 is connected to the first end of the current limiting resistor R28, the fourth end of the diode D9 is grounded GND, the second end of the relay K1 is grounded GND, the second end of the resistor R1, the second end of the resistor R2 and the K pole of the TVS bidirectional diode D2 are connected to the third end of the relay K1,The first end of resistor R1, the first end of resistor R2 and the A pole of TVS bidirectional diode D2 are connected to ground GND1, the first end of relay K1, the K pole of diode D3 and the second end of resistor R6 are connected to +12V, the first end of resistor R6 is connected to the first end of diode D9, the second end of diode D9, the A pole of diode D3 and the eighth end of relay K1 are connected to the C pole of transistor Q1, the first end of resistor R3, the second end of resistor R7 and the second end of resistor R8 are connected to ALARM, the second end of resistor R3 is connected to the B pole of transistor Q1, and the E pole of transistor Q1 is grounded G ND1, the first end of resistor R7 is connected to the B pole of transistor Q2, the first end of resistor R9 is connected to +12V, the second end of resistor R9 and the second end of resistor R10 are connected to the C pole of transistor Q2, the first end of resistor R10 is connected to the B pole of transistor Q4, the E pole of transistor Q2 and the E pole of transistor Q4 are grounded, the C pole of transistor Q4 is connected to LED_RUN, indicating that the power supply is running normally, the first end of resistor R8 is connected to the B pole of transistor Q3, the E pole of transistor Q3 is grounded GND1, and the C pole of transistor Q3 is connected to LED_ERR, indicating that the power supply is running abnormally and is in a reset state. ,

[0031] like Figure 8 As shown, the circuit state indication module controls the light-emitting diode light color to indicate the circuit working state through LED_RUN and LED_ERR signals respectively. The circuit state indication module includes a resistor R4, a resistor R5 and a light-emitting diode D18, the first end and the third end of the diode D18 are connected to +30V, the fourth end of the diode D18 is connected to the second end of the resistor R4, the first end of the resistor R4 is connected to LED_ERR, indicating that the power supply is abnormal and in a reset state, the second end of the diode D18 is connected to the second end of the resistor R5, and the first end of the resistor R5 is connected to LED_RUN, indicating that the power supply is operating normally.

[0032] This application mainly converts 30VDC into KNX power output and signal transmission through the KNX power output control module through the common mode inductor and the corresponding transistor switch circuit. At the same time, there is also a 30VDC auxiliary power output. When the alarm signal ALARM is detected, the short-circuit protection function is realized by switching the relay, and the corresponding indicator light status is output through the transistor switch circuit; the 12V power supply module reduces the 30VDC to 12V through the switching power supply chip to power the relay, operational amplifier and other devices; the button reset timing module realizes the acquisition of the reset signal through the reset button, and uses it as a trigger signal to the timing chip to generate an alarm signal ALARM for timing reset; the short-circuit protection reset timing module detects the sampling voltage and the reference voltage output by the voltage reference chip and outputs a trigger signal to the timing chip after passing through the comparator. When the circuit detects a short circuit, the timing chip receives the trigger signal and generates an alarm signal ALARM for timing reset; the 30V discharge module discharges the 30VDC through the MOSFET switch circuit when the power supply is in the reset state; the circuit status indication module indicates the corresponding status through the light-emitting diode after receiving the corresponding indicator light status. A hardware board is used to realize a KNX bus power supply through a simple circuit. It has two output terminals, one for KNX bus power supply and signal transmission, which can power other control modules on the same branch line, and the other for auxiliary power supply. The bus power supply can be reset with one button and the device returns to its initial state. It also has overload and short-circuit protection functions to ensure system safety.

[0033] The above-described embodiment is only a preferred solution of the present application and does not limit the present application in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A KNX power supply system, characterized in that: include: 220V AC input 30V DC output interface, 12V power module, short circuit protection reset timing module, button reset timing module, 30V discharge module, KNX power output control module and circuit status indication module, The 12V power supply module is connected to the 220V AC input and 30V DC output interface to input 30V and output 12V power supply to power other modules. The short-circuit protection reset timing module is connected to the 12V power supply module and the key reset timing module. When the alarm signal ALARM is detected, the short-circuit protection is realized by switching the relay. The key reset timing module collects the reset signal through the reset button, and gives the timing chip as a trigger signal to generate the alarm signal ALARM for timing reset. The 30V discharge module is connected to the key reset timing module and the KNX power output control module. When the 30V discharge module detects the alarm signal ALARM, the Mos tube is turned on to discharge 30VDC. The KNX power output control module includes a first output end and a second output end. The first output end realizes KNX bus signal transmission and power supply through a common mode inductor and related circuits. The second output end provides 30VDC for auxiliary power supply, and receives the alarm signal ALARM to realize short-circuit protection. The circuit status indication module is connected to the KNX power output control module. After receiving the corresponding indicator light status, the circuit status indication module indicates the corresponding status through a light-emitting diode.

2. The KNX power supply system according to claim 1, characterized in that: The 12V power supply module includes a switching power supply chip U4, a resistor R47, a resistor R48, a resistor R49, a resistor R50, a resistor R51, a diode D7, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14 and an inductor L2. The fifth end of P2 of the 220V AC input 30V DC output interface is connected to the second end of capacitor C10, the second end of capacitor C11 and the second end of capacitor C13 respectively. The second end of capacitor C10, the second end of capacitor C11 and the second end of capacitor C13 are filtered and connected to the first end of resistor R47, the first end of resistor R48, the first end of resistor R49 and the sixth end of the switching power supply chip U4. The first end of capacitor C10, the first end of capacitor C11 and the first end of capacitor C14 are connected to the sixth end of the switching power supply chip U4. The first end of 13 is grounded, the second ends of resistors R47, R48 and R49 are connected to the seventh and eighth ends of the switching power chip U4, the second end of resistor R50 is grounded, the first end of resistor R51 is connected to +12V, the first end of resistor R50 and the second end of resistor R51 form a voltage divider circuit to provide feedback sampling to the fifth end of the switching power chip U4, the third end of the switching power chip U4 is connected to the second end of capacitor C12, the first end of capacitor C12 is grounded, the second end of the switching power chip U4 outputs power to the K pole of diode D7 and the first end of inductor L2, the A pole of diode D7 is grounded, the second end of inductor L2 is connected to the second end of capacitor C14 and outputs to +12V after filtering, and the first end of capacitor C14 is grounded.

3. The KNX power supply system according to claim 2, characterized in that: The short circuit protection reset timing module includes an op amp chip U1A, an op amp chip U1B, an op amp chip U1C, a voltage reference chip U3, a timing chip U5, a resistor R12, a resistor R13, a resistor R15, a resistor R16, a resistor R17, a resistor R19, a resistor R20, a resistor R21, a resistor R23, a resistor R26, a resistor R27, a resistor R31, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C15, a capacitor C17, a capacitor C18, a capacitor C19, a capacitor C30 and a diode D8. The second end of the resistor R12 and the first end of the resistor R13 are connected to the second end of the capacitor C4, the first end of the resistor R12 is grounded, and the second end of the resistor R13 and the resistor R1 are grounded. The second end of capacitor C6 and the second end of capacitor C5 are connected to the third end of operational amplifier chip U1A, the second end of capacitor C4, the first end of capacitor C5 and the first end of resistor R16 are grounded, the second end of resistor R19 and the second end of resistor R17 are connected to the second end of operational amplifier chip U1A, the first end of resistor R19 is grounded, the first end of resistor R17 and the first end of resistor R15 are connected to the first end of operational amplifier chip U1A, the second end of resistor R15 and the second end of capacitor C3 are connected to the sixth end of operational amplifier chip U1B, the first end of capacitor C3 is grounded GND1, the second end of resistor R20 is connected to +12V, the first end of resistor R20 and the second end of resistor R21 are connected to the first end of voltage reference chip U3 and the second end of voltage reference chip U3, the voltage reference chip U3 The third end and the first end of the resistor R23 are grounded, the first end of the resistor R21 and the second end of the resistor R23 divide the voltage to generate a reference level and input it to the tenth end of the operational amplifier chip U1C, the second end of the capacitor C8 and the second end of the capacitor C30 filter the +12V and connect to the fourth end of the operational amplifier chip U1C, the first end of the capacitor C8 and the first end of the capacitor C30 are connected to the ground, the ninth and eighth ends of the operational amplifier chip U1C and the fifth end of the operational amplifier chip U1B are connected to the second end of the capacitor C7, the first end of the capacitor C7 is grounded, the compared signal is output to the second end of the resistor R27 and the second end of the timing chip U5 through the seventh end of the operational amplifier chip U1B for triggering, the first end of the resistor R27 and the first end of the resistor R31 are connected to +12V as pull-up resistors, and the resistor R3 1 second end and the second end of capacitor C19 are connected to the reset pin of the fourth end of timing chip U5, the first end of capacitor C19 is grounded, the fifth end of timing chip U5 is connected to the second end of capacitor C15, the first end of timing chip U5 and the first end of capacitor C15 are grounded, the second end of capacitor C9 is connected to the eighth end of timing chip U5 for filtering +12V, the first end of capacitor C9 is grounded, the first end of resistor R26 is connected to +12V, the second end of resistor R26 and the second end of capacitor C17 and the second end of capacitor C18 are connected to the seventh end of timing chip U5, the first end of capacitor C17 and the first end of capacitor C18 are grounded, the third end of timing chip U5 outputs the alarm signal ALARM to the A pole of diode D8, and the ALARM pin is output by the K pole of diode D8.

4. The KNX power supply system according to claim 3, characterized in that: The button reset timing module includes a timing chip U6, a reset button K2, a resistor R29, a resistor R30, a resistor R32, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23 and a diode D10. The first end of the reset button K2 is grounded, the second end of the reset button K2 is connected to the first end of the resistor R30, the second end of the resistor R30 and the first end of the resistor R32 are connected to 12V as a pull-up resistor, the second end of the resistor R32 and the second end of the capacitor C23 are connected to the reset pin of the fourth end of the timing chip U6, the first end of the capacitor C23 is grounded, the fifth end of the timing chip U6 is connected to the second end of the capacitor C20, the first end of the timing chip U6 and the first end of the capacitor C20 are grounded, the first end of the resistor R29 is connected to +12V, the second end of the resistor R29 and the second end of the capacitor C21 and the second end of the capacitor C22 are connected to the seventh end of the timing chip U6, the first end of the capacitor C21 and the first end of the capacitor C22 are grounded, and the third end of the chip U6 outputs an alarm signal to the A pole of the diode D10, and the K pole of the diode D10 outputs ALARM.

5. The KNX power supply system according to claim 4, characterized in that: The 30V discharge module includes a resistor R40, a resistor R41, and a MOS tube Q10. The first end of the resistor R40 is connected to ALARM, the second end of the resistor R40 is connected to the G pole of the MOS tube Q1, the second end of the resistor R41 is connected to +30V, the first end of the resistor R41 is connected to the D pole of the MOS tube Q10, and the S pole of the MOS tube Q10 is grounded.

6. The KNX power supply system according to claim 5, characterized in that: The KNX power output control module includes resistor R1, resistor R2, resistor R3, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, resistor R14, resistor R18, resistor R22, resistor R24, resistor R25, resistor R28, capacitor C1, capacitor C2, capacitor C6, inductor L1, diode D3, diode D5, diode D6, diode D15, diode D9, TVS bidirectional diode D1, TVS bidirectional diode D2, transistor Q1, transistor Q2, transistor Q3, transistor Q4, transistor Q5, transistor Q6, relay K1, terminal J5 and terminal J7, the sixth terminal of relay K1 and TVS bidirectional diode The K pole of D1 is connected to +30V, the A pole of the TVS bidirectional diode D1 is grounded, the seventh end of the relay K1 is connected to the fourth end of the inductor L1, the first end of the resistor R11, the second end of the resistor R18 and the A pole of the diode D5, the second end of the resistor R11 is connected to the B pole of the transistor Q5, the second end of the resistor R14 and the first end of the capacitor C2 are connected to the C pole of the transistor Q5, the second end of the capacitor C2 and the K pole of the diode D5 are connected to the E pole of the transistor Q5, the first end of the resistor R14 is connected to the second end of the resistor R18, the first end of the resistor R18 is connected to the ninth end of the inductor L1, the positive pole of the KNX power supply is output +30_V3, the tenth end of the inductor L1 is grounded, the first end of the capacitor C6 and the second end of the resistor R25 are connected to the C pole of the transistor Q6. The first end of the resistor R25 is grounded GND, the second end of the capacitor C6 and the K pole of the diode D6 are connected to the E pole of the transistor Q6, the B pole of the transistor Q6 is connected to the second end of the resistor R22, the first end of the resistor R24 ​​is grounded, the second end of the resistor R24, the first end of the resistor R22 and the A pole of the diode D6 are connected to the third end of the inductor L1, the KNX power supply negative electrode +30G is output, the first end of the terminal J7 is connected to +30V_3, the KNX positive electrode is output, the second end of the terminal J7 is connected to +30G, the KNX negative electrode is output, the first end of the terminal J5 and the first end of the capacitor C1 are grounded, the auxiliary power supply negative electrode is output, the second end of the capacitor C1 and the A pole of the diode D15 are connected to +30_2, and the second end of the terminal J5 is connected to The K pole of diode D15 outputs the positive pole of auxiliary power supply, the second end of resistor R28 is connected to +30V_3, the third end of diode D9 is connected to the first end of resistor R28, the fourth end of diode D9 is grounded, the second end of relay K1 is grounded GND, the second end of resistor R1, the second end of resistor R2 and the K pole of TVS bidirectional diode D2 are connected to the third end of relay K1, the first end of resistor R1, the first end of resistor R2 and the A pole of TVS bidirectional diode D2 are grounded, the first end of relay K1, the K pole of diode D3 and the second end of resistor R6 are connected to +12V, the first end of resistor R6 is connected to the first end of diode D9, the second end of diode D9, the A pole of diode D3 and the eighth end of relay K1 are connected to the C pole of transistor Q1,The first end of resistor R3, the second end of resistor R7 and the second end of resistor R8 are connected to ALARM, the second end of resistor R3 is connected to the B pole of transistor Q1, the E pole of transistor Q1 is grounded, the first end of resistor R7 is connected to the B pole of transistor Q2, the first end of resistor R9 is connected to +12V, the second end of resistor R9 and the second end of resistor R10 are connected to the C pole of transistor Q2, the first end of resistor R10 is connected to the B pole of transistor Q4, the E pole of transistor Q2 and the E pole of transistor Q4 are grounded, the C pole of transistor Q4 is connected to LED_RUN, indicating that the power supply is running normally, the first end of resistor R8 is connected to the B pole of transistor Q3, the E pole of transistor Q3 is grounded, and the C pole of transistor Q3 is connected to LED_ERR, indicating that the power supply is running abnormally and is in a reset state.

7. The KNX power supply system according to claim 6, characterized in that: The circuit status indication module includes resistor R4, resistor R5 and diode D18. The first end and the third end of diode D18 are connected to +30V, the fourth end of diode D18 is connected to the second end of resistor R4, the first end of resistor R4 is connected to LED_ERR, indicating that the power supply is operating abnormally and is in a reset state, the second end of diode D18 is connected to the second end of resistor R5, and the first end of resistor R5 is connected to LED_RUN, indicating that the power supply is operating normally.

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