Medicine head excitation control circuit

Abstract

The utility model discloses a medicine head excitation control circuit, which comprises a voltage regulating circuit unit for outputting preset stable voltage; the COM end of the two-gear switch is electrically connected with the output end of the voltage regulating circuit unit; the positive electrode of the capacitor unit is electrically connected with the NC end of the two-gear open end, the negative electrode end is grounded, and electric energy is stored when the NC end is conducted; the output end of the output control unit is electrically connected with the medicine head, the input end is electrically connected with the positive electrode of the capacitor unit, and the control end is electrically connected with the NO end of the two-gear switch; the NO end controls the input end to be communicated with the output end after conducting electricity, and the electric energy of the capacitor is transmitted to the medicine head. According to the utility model, the voltage does not need to be adjusted manually, the voltage can be calibrated automatically, the excitation speed of the head is high in the experiment process, and waiting is not needed.

Description

Technical Field

[0001] The utility model relates to the field of electronic circuits, in particular to a drug head excitation control circuit. Background Art

[0002] In current electronic detonators, capacitors are required to ignite the bridgewire and ignition charge to ensure proper alignment between the bridgewire and capacitor and the ignition charge. The commonly used experimental equipment for this type of experiment uses a hardware-regulated power supply to charge the capacitor. During this charging process, the capacitor must be continuously topped up and its voltage monitored. This process takes a long time, extending the overall experimental time in large-scale experiments. Utility Model Content

[0003] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a drug head excitation control circuit, which does not require manual voltage adjustment and the voltage is automatically calibrated. During the experiment, the drug head is excited quickly without waiting.

[0004] The purpose of this utility model is achieved through such technical solution:

[0005] A drug head excitation control circuit, comprising:

[0006] The voltage regulating circuit unit outputs a preset stable voltage;

[0007] A two-speed switch, wherein the COM terminal is electrically connected to the output terminal of the voltage regulating circuit unit;

[0008] The capacitor unit has a positive terminal electrically connected to the NC terminal at the start of the two gears, and a negative terminal grounded, and stores electrical energy when the NC terminal is turned on;

[0009] The output control unit has an output end electrically connected to the medicine head, an input end electrically connected to the positive electrode of the capacitor unit, and a control end electrically connected to the NO end of the two-speed open switch; after the NO end is conductive, the control input end and the output end are connected to transmit the capacitor electrical energy to the medicine head.

[0010] Furthermore, the voltage regulating circuit unit includes:

[0011] Microcontroller module;

[0012] Voltage input control module, the input end is connected to the positive pole of the external power supply, the control end is electrically connected to the micro control unit, and controls the voltage output;

[0013] The power IC module receives the voltage input from the control module and outputs the voltage;

[0014] The resistance matching module receives the electrical signal from the microcontroller module and is electrically connected to the input terminal of the power IC module to limit the output voltage range of the power IC;

[0015] The short-circuit protection module has an input end connected to the output voltage of the microcontroller module and outputs a preset stable voltage to the two-speed switch.

[0016] Furthermore, the voltage input control module includes:

[0017] Q18 is an enhancement type PMOS transistor, the source of which is electrically connected to a positive voltage, and the drain of which is electrically connected to a microcontroller module;

[0018] The 36th resistor has two ends electrically connected to the source and gate of the Q18 enhancement mode PMOS transistor respectively;

[0019] The Q19 enhancement type NMOS transistor has a drain electrically connected to the gate of the Q18 enhancement type PMOS transistor and a drain grounded;

[0020] The 39th resistor has two ends electrically connected to the gate and source of the Q19th enhancement mode NMOS transistor respectively;

[0021] The 15th capacitor has its two ends electrically connected to the gate and source of the Q19 enhancement mode NMOS transistor respectively;

[0022] The 37th resistor has two ends electrically connected to the gate of the Q19 enhancement-mode NMOS transistor and the micro-control module respectively.

[0023] Furthermore, the resistance matching module includes:

[0024] a 15th resistor, both ends of which are electrically connected to the microcontroller module and the power IC module respectively;

[0025] a 13th resistor, having one end electrically connected to the positive voltage and the other end electrically connected to the electrical connection point between the 15th resistor and the power IC module;

[0026] The 16th resistor has one end grounded and the other end electrically connected to the electrical connection point between the 15th resistor and the power IC module.

[0027] Furthermore, the short circuit protection module includes:

[0028] a 33rd resistor, an input end of which is electrically connected to the power IC module;

[0029] a 16th enhancement-mode PMOS transistor, having a source electrically connected to the output end of the 33rd resistor, and a drain electrically connected to the COM end of the two-speed switch;

[0030] a Q17 transistor, the collector of which is electrically connected to the input end of the 33rd resistor, the base of which is electrically connected to the drain of the 16th enhancement mode PMOS transistor, and the emitter of which is electrically connected to the gate of the 16th enhancement mode PMOS transistor;

[0031] a 34th resistor, two ends of which are electrically connected to the input end of the 33rd resistor and the gate of the 16th enhancement mode PMOS transistor respectively;

[0032] a 35th resistor, one end of which is grounded, and the other end of which is electrically connected to the gate of the 16th enhancement mode PMOS transistor;

[0033] a ninth capacitor having one end grounded and the other end electrically connected to the input end of the thirty-third resistor;

[0034] an electrolytic capacitor E6 having a negative electrode connected to ground and a positive electrode electrically connected to the input terminal of the resistor 33;

[0035] The negative electrode of the electrolytic capacitor E5 is grounded, and the positive electrode is electrically connected to the COM terminal of the two-speed switch;

[0036] The tenth capacitor has one end connected to the ground and the other end electrically connected to the COM terminal of the two-speed switch.

[0037] Furthermore, the capacitor unit includes:

[0038] At least one electrolytic capacitor has a negative electrode grounded and a positive electrode electrically connected to the NC terminals of the two-speed on-off switches and an output terminal of the output control unit.

[0039] Furthermore, the output control unit includes:

[0040] NMOS module, the control terminal is electrically connected to the NO terminal of the two-speed start end, and the input terminal is grounded;

[0041] The PMOS module has a control end electrically connected to the output end of the NMOS module, an input end electrically connected to the positive electrode of the capacitor unit, and an output end electrically connected to the drug head.

[0042] Furthermore, the NMOS module includes:

[0043] The gate of the Q3 enhancement type NMOS transistor is electrically connected to the NO terminal of the two-stage start;

[0044] a fourth resistor, one end of which is grounded, and the other end of which is electrically connected to the source of the Q3 enhancement-mode NMOS transistor;

[0045] The fifth resistor has two ends electrically connected to the gate and the source of the Q3 enhancement-mode NMOS transistor respectively.

[0046] Furthermore, the PMOS module includes:

[0047] The Q2 enhancement type PMOS tube has a source electrically connected to the positive electrode of the capacitor unit and a drain electrically connected to the lead;

[0048] The first resistor has two ends electrically connected to the gate of the Q2 enhancement-mode PMOS transistor and the output end of the NMOS module respectively;

[0049] a second resistor, one end of which is grounded, and the other end of which is electrically connected to the gate of the Q2 enhancement-mode PMOS transistor;

[0050] The first capacitor has both ends electrically connected to both ends of the second resistor.

[0051] Due to the adoption of the above technical solution, the utility model has the following advantages:

[0052] 1. Through software dynamic voltage regulation, the required voltage value is set, and there is no need to manually adjust the voltage. The voltage will be automatically calibrated, reducing the amount of operation and improving experimental efficiency.

[0053] 2. The physical switch controls the charging and discharging of the capacitor. Pressing the metal button switches the capacitor to discharge to the bridge wire. After the bridge wire ignites, the drug head is stimulated. The drug head is stimulated quickly without waiting.

[0054] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The accompanying drawings of the present invention are as follows:

[0056] Figure 1 Schematic diagram of the principle block diagram of the drug head excitation control circuit in this embodiment.

[0057] Figure 2 This is a circuit diagram of the voltage input control module of the drug head excitation control circuit in this embodiment.

[0058] Figure 3 This is the circuit diagram of the power IC module of the drug head excitation control circuit in this embodiment.

[0059] Figure 4 This is the circuit diagram of the resistance ratio module of the drug head excitation control circuit in this embodiment.

[0060] Figure 5 This is the circuit diagram of the short-circuit protection module of the drug head excitation control circuit in this embodiment.

[0061] Figure 6 This is a circuit diagram of the two-speed switch, capacitor power supply, and output control unit of the drug head excitation control circuit in this embodiment. DETAILED DESCRIPTION

[0062] The present invention will be further described below with reference to the accompanying drawings and examples.

[0063] Example:

[0064] like Figure 1 、 Figure 3 As shown, a drug head excitation control circuit is characterized by comprising:

[0065] Microcontroller module;

[0066] Voltage input control module, the input end is connected to the positive pole of the external power supply, the control end is electrically connected to the micro control unit, and controls the voltage output;

[0067] The power IC module receives the voltage input from the control module and outputs the voltage;

[0068] The resistance matching module receives the electrical signal from the microcontroller module and is electrically connected to the input terminal of the power IC module to limit the output voltage range of the power IC;

[0069] The short-circuit protection module has an input terminal connected to the output voltage of the microcontroller module and outputs a preset stable voltage;

[0070] Two-speed switch, the COM terminal is electrically connected to the output terminal of the voltage regulating circuit unit to obtain a preset stable voltage;

[0071] The capacitor unit has a positive terminal electrically connected to the NC terminal at the start of the two gears, and a negative terminal grounded, and stores electrical energy when the NC terminal is turned on;

[0072] The output control unit has an output end electrically connected to the medicine head, an input end electrically connected to the positive electrode of the capacitor unit, and a control end electrically connected to the NO end of the two-speed open switch; after the NO end is conductive, the control input end and the output end are connected to transmit the capacitor electrical energy to the medicine head.

[0073] Figure 3 The P_H_DAC pin is connected to the microcontroller module.

[0074] like Figure 2 As shown, the voltage input control module includes:

[0075] Q18 is an enhancement type PMOS transistor, the source of which is electrically connected to a positive voltage, and the drain of which is electrically connected to a microcontroller module;

[0076] The 36th resistor has two ends electrically connected to the source and gate of the Q18 enhancement mode PMOS transistor respectively;

[0077] The Q19 enhancement type NMOS transistor has a drain electrically connected to the gate of the Q18 enhancement type PMOS transistor and a drain grounded;

[0078] The 39th resistor has two ends electrically connected to the gate and source of the Q19th enhancement mode NMOS transistor respectively;

[0079] The 15th capacitor has its two ends electrically connected to the gate and source of the Q19 enhancement mode NMOS transistor respectively;

[0080] The 37th resistor has two ends electrically connected to the gate of the Q19 enhancement-mode NMOS transistor and the micro-control module respectively.

[0081] Figure 2 LA_5V in the upper right corner and Figure 3 5V connection in the upper left corner; Figure 2 The PWR_EN pin is connected to the microcontroller module.

[0082] like Figure 4 As shown, the resistance matching module includes:

[0083] a 15th resistor, both ends of which are electrically connected to the microcontroller module and the power IC module respectively;

[0084] a 13th resistor, having one end electrically connected to the positive voltage and the other end electrically connected to the electrical connection point between the 15th resistor and the power IC module;

[0085] The 16th resistor has one end grounded and the other end electrically connected to the electrical connection point between the 15th resistor and the power IC module.

[0086] like Figure 5 As shown, the short-circuit protection module includes:

[0087] a 33rd resistor, an input end of which is electrically connected to the power IC module;

[0088] a 16th enhancement-mode PMOS transistor, having a source electrically connected to the output end of the 33rd resistor, and a drain electrically connected to the COM end of the two-speed switch;

[0089] a Q17 transistor, the collector of which is electrically connected to the input end of the 33rd resistor, the base of which is electrically connected to the drain of the 16th enhancement mode PMOS transistor, and the emitter of which is electrically connected to the gate of the 16th enhancement mode PMOS transistor;

[0090] a 34th resistor, two ends of which are electrically connected to the input end of the 33rd resistor and the gate of the 16th enhancement mode PMOS transistor respectively;

[0091] a 35th resistor, one end of which is grounded, and the other end of which is electrically connected to the gate of the 16th enhancement mode PMOS transistor;

[0092] a ninth capacitor having one end grounded and the other end electrically connected to the input end of the thirty-third resistor;

[0093] an electrolytic capacitor E6 having a negative electrode connected to ground and a positive electrode electrically connected to the input terminal of the resistor 33;

[0094] The negative electrode of the electrolytic capacitor E5 is grounded, and the positive electrode is electrically connected to the COM terminal of the two-speed switch;

[0095] The tenth capacitor has one end connected to the ground and the other end electrically connected to the COM terminal of the two-speed switch.

[0096] like Figure 6 As shown, the capacitor unit includes:

[0097] At least one electrolytic capacitor has a negative electrode grounded and a positive electrode electrically connected to the NC terminals of the two-speed on-off switches and an output terminal of the output control unit.

[0098] Furthermore, the output control unit includes:

[0099] NMOS module, the control terminal is electrically connected to the NO terminal of the two-speed start end, and the input terminal is grounded;

[0100] The PMOS module has a control end electrically connected to the output end of the NMOS module, an input end electrically connected to the positive electrode of the capacitor unit, and an output end electrically connected to the drug head.

[0101] like Figure 6 As shown, the NMOS module includes:

[0102] The gate of the Q3 enhancement type NMOS transistor is electrically connected to the NO terminal of the two-stage start;

[0103] a fourth resistor, one end of which is grounded, and the other end of which is electrically connected to the source of the Q3 enhancement-mode NMOS transistor;

[0104] The fifth resistor has two ends electrically connected to the gate and the source of the Q3 enhancement-mode NMOS transistor respectively.

[0105] like Figure 6 As shown, the PMOS module includes:

[0106] The Q2 enhancement type PMOS tube has a source electrically connected to the positive electrode of the capacitor unit and a drain electrically connected to the lead;

[0107] The first resistor has two ends electrically connected to the gate of the Q2 enhancement-mode PMOS transistor and the output end of the NMOS module respectively;

[0108] a second resistor, one end of which is grounded, and the other end of which is electrically connected to the gate of the Q2 enhancement-mode PMOS transistor;

[0109] The first capacitor has both ends electrically connected to both ends of the second resistor.

[0110] In this embodiment, the drug head excitation is achieved as follows:

[0111] like Figure 1 As shown, the required voltage is set in the microcontroller module, and then the voltage input control module (MOS tube) outputs a signal to control the input voltage to be output to the power IC. The power IC input voltage is 5V.

[0112] Set a fixed resistor ratio to limit the output voltage range of the power supply IC. Here, the range is set to 7 to 20V.

[0113] The microcontroller module adjusts the output voltage within the range through the DAC output of the MCU;

[0114] The output voltage of the power supply IC is short-circuit protected to obtain a preset stable voltage. To prevent the output end from short-circuiting and burning the power supply IC, a power supply short-circuit protection circuit is added before the output to limit the output current to 150mA.

[0115] The stable voltage is connected to the COM terminal of the two-speed switch, and the NC terminal of the two-speed switch is connected to the capacitor unit to charge the capacitor unit. At this time, the voltage across the capacitor is constant at the charging voltage.

[0116] Pressing the two-position switch disconnects the NC terminal, halting the regulated voltage from charging the capacitor unit. The NO terminal conducts, and the regulated voltage turns on the NMOS and PMOS modules. The voltage across the capacitor is discharged through the NMOS and PMOS modules to the ignition charge, which ignites. The NMOS and PMOS modules ensure smooth, spike-free discharge of the capacitor.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A drug head excitation control circuit, characterized in that: include: The voltage regulating circuit unit outputs a preset stable voltage; A two-speed switch, wherein the COM terminal is electrically connected to the output terminal of the voltage regulating circuit unit; The capacitor unit has a positive terminal electrically connected to the NC terminal at the start of the two gears, and a negative terminal grounded, and stores electrical energy when the NC terminal is turned on; The output control unit has an output end electrically connected to the medicine head, an input end electrically connected to the positive electrode of the capacitor unit, and a control end electrically connected to the NO end of the two-speed open switch; after the NO end is conductive, the control input end and the output end are connected to transmit the capacitor electrical energy to the medicine head.

2. The drug head excitation control circuit according to claim 1, characterized in that: The voltage regulating circuit unit includes: Microcontroller module; Voltage input control module, the input end is connected to the positive pole of the external power supply, the control end is electrically connected to the micro control unit, and controls the voltage output; The power IC module receives the voltage input from the control module and outputs the voltage; The resistance matching module receives the electrical signal from the microcontroller module and is electrically connected to the input terminal of the power IC module to limit the output voltage range of the power IC; The short-circuit protection module has an input end connected to the output voltage of the microcontroller module and outputs a preset stable voltage to the two-speed switch.

3. The drug head excitation control circuit according to claim 2, characterized in that: The voltage input control module includes: Q18 is an enhancement type PMOS transistor, the source of which is electrically connected to a positive voltage, and the drain of which is electrically connected to a microcontroller module; The 36th resistor has two ends electrically connected to the source and gate of the Q18 enhancement mode PMOS transistor respectively; The Q19 enhancement type NMOS transistor has a drain electrically connected to the gate of the Q18 enhancement type PMOS transistor and a drain grounded; The 39th resistor has two ends electrically connected to the gate and source of the Q19th enhancement mode NMOS transistor respectively; The 15th capacitor has its two ends electrically connected to the gate and source of the Q19 enhancement mode NMOS transistor respectively; The 37th resistor has two ends electrically connected to the gate of the Q19 enhancement-mode NMOS transistor and the micro-control module respectively.

4. The drug head excitation control circuit according to claim 2, characterized in that: The resistance matching module includes: a 15th resistor, both ends of which are electrically connected to the microcontroller module and the power IC module respectively; a 13th resistor, having one end electrically connected to the positive voltage and the other end electrically connected to the electrical connection point between the 15th resistor and the power IC module; The 16th resistor has one end grounded and the other end electrically connected to the electrical connection point between the 15th resistor and the power IC module.

5. The drug head excitation control circuit according to claim 2, characterized in that: The short circuit protection module includes: a 33rd resistor, an input end of which is electrically connected to the power IC module; a 16th enhancement-mode PMOS transistor, having a source electrically connected to the output end of the 33rd resistor, and a drain electrically connected to the COM end of the two-speed switch; a Q17 transistor, the collector of which is electrically connected to the input end of the 33rd resistor, the base of which is electrically connected to the drain of the 16th enhancement mode PMOS transistor, and the emitter of which is electrically connected to the gate of the 16th enhancement mode PMOS transistor; a 34th resistor, two ends of which are electrically connected to the input end of the 33rd resistor and the gate of the 16th enhancement mode PMOS transistor respectively; a 35th resistor, one end of which is grounded, and the other end of which is electrically connected to the gate of the 16th enhancement mode PMOS transistor; a ninth capacitor having one end grounded and the other end electrically connected to the input end of the thirty-third resistor; an electrolytic capacitor E6 having a negative electrode connected to ground and a positive electrode electrically connected to the input terminal of the resistor 33; The negative electrode of the electrolytic capacitor E5 is grounded, and the positive electrode is electrically connected to the COM terminal of the two-speed switch; The tenth capacitor has one end connected to the ground and the other end electrically connected to the COM terminal of the two-speed switch.

6. The drug head excitation control circuit according to claim 1, characterized in that: The capacitor unit includes: At least one electrolytic capacitor has a negative electrode grounded and a positive electrode electrically connected to the NC terminals of the two-speed on-off switches and an output terminal of the output control unit.

7. The drug head excitation control circuit according to claim 1, characterized in that: The output control unit includes: NMOS module, the control terminal is electrically connected to the NO terminal of the two-speed start end, and the input terminal is grounded; The PMOS module has a control end electrically connected to the output end of the NMOS module, an input end electrically connected to the positive electrode of the capacitor unit, and an output end electrically connected to the drug head.

8. The drug head excitation control circuit according to claim 7, characterized in that: The NMOS module includes: The gate of the Q3 enhancement type NMOS transistor is electrically connected to the NO terminal of the two-stage start; a fourth resistor, one end of which is grounded, and the other end of which is electrically connected to the source of the Q3 enhancement-mode NMOS transistor; The fifth resistor has two ends electrically connected to the gate and the source of the Q3 enhancement-mode NMOS transistor respectively.

9. The drug head excitation control circuit according to claim 7, characterized in that: The PMOS module includes: The Q2 enhancement type PMOS tube has a source electrically connected to the positive electrode of the capacitor unit and a drain electrically connected to the lead; The first resistor has two ends electrically connected to the gate of the Q2 enhancement-mode PMOS transistor and the output end of the NMOS module respectively; a second resistor, one end of which is grounded, and the other end of which is electrically connected to the gate of the Q2 enhancement-mode PMOS transistor; The first capacitor has both ends electrically connected to both ends of the second resistor.

Images