Control module circuit structure of wireless electronic detonator and working method of control module circuit structure

Abstract

The invention discloses a control module circuit structure of wireless electronic detonators and a working method of the control module circuit structure, and solves the problem of how to prevent ionized electrons from entering wireless electronic detonators in blast holes at the rear section when all sections of wireless electronic detonators on a tunnel face are detonated in batches in a delayed manner. A first output riveting terminal of the riveting terminal CON2 is connected with a fifth current-limiting resistor R5, the other end of the fifth current-limiting resistor R5 is connected with a first communication signal access end LA of the wireless electronic detonator chip U1 through a sixth diode D6, and a second output riveting terminal of the riveting terminal CON2 is connected with a sixth current-limiting resistor R6. The other end of the sixth current-limiting resistor R6 is connected with a second communication signal access end LB of the wireless electronic detonator chip U1 through a seventh diode D7, and an ignition resistor R2 is connected in parallel between a ninth pin VCAP of the wireless electronic detonator chip U1 and a sixth pin ORCH of the wireless electronic detonator chip U1.

Description

Technical Field

[0001] This invention relates to a wireless electronic detonator, and more particularly to a control module circuit structure and operating method of a wireless electronic detonator. Background Technology

[0002] The specific operational steps for on-site blasting using wireless electronic detonators are as follows: First, blasting holes for each section are drilled on the blasting face. Explosives and a wireless electronic detonator are placed in each hole. The receiving antenna of each wireless electronic detonator is suspended outside the blasting face via its lead wire to ensure accurate reception of wireless signals. The wireless electronic detonators are networked and programmed with delay signals using a detonator. A charging command and a detonation command are then issued through the detonator. The electronic detonators in each section of the blast hole detonate sequentially according to the prescribed delay. Because the entire blasting face... The wireless electronic detonators in each section are detonated sequentially with a time delay. After the wireless electronic detonator in the first section detonates and ignites the explosive in the first section, the explosion ionizes the air. These ionized electrons pass through the receiving antenna of the wireless electronic detonator in the second section, which is suspended outside the working face, and enter the wireless electronic detonator in the second section that has not yet detonated, forming static electricity. This static electricity damages the chip in the wireless electronic detonator in the second section, preventing it from detonating. Therefore, how to prevent the above phenomenon from occurring is a difficult problem for those skilled in the art. Summary of the Invention

[0003] This invention provides a control module circuit structure and operating method for a wireless electronic detonator, solving the technical problem of how to prevent ionized electrons from entering the wireless electronic detonators in the later-stage blast holes when the wireless electronic detonators in each section of the working face are detonated in batches with time delay.

[0004] The present invention solves the above technical problems through the following technical solutions: A control module circuit structure for a wireless electronic detonator includes a riveting terminal CON2, a rectifier bridge, a wireless electronic detonator chip U1, and an ignition resistor 2R. A fifth current-limiting resistor R5 is connected to the first output riveting terminal of the riveting terminal CON2. The other end of the fifth current-limiting resistor R5 is connected to the first communication signal input terminal LA of the wireless electronic detonator chip U1 through a sixth diode D6. A sixth current-limiting resistor R6 is connected to the second output riveting terminal of the riveting terminal CON2. The other end of the sixth current-limiting resistor R6 is connected to the second communication signal input terminal LB of the wireless electronic detonator chip U1 through a seventh diode D7. A fourth grounding resistor R4 is connected to the first communication signal input terminal LA, and a seventh grounding resistor R7 is connected to the second communication signal input terminal LB. An ignition resistor R2 is connected in parallel between the ninth pin VCAP and the sixth pin ORCH of the wireless electronic detonator chip U1. An ignition capacitor C4 and an ignition capacitor discharge resistor R3 are also connected between the ninth pin VCAP of the wireless electronic detonator chip U1 and ground.

[0005] A rectifier bridge is connected in parallel between the output terminals of the fifth current-limiting resistor R5 and the sixth current-limiting resistor R6. The rectifier bridge is composed of the second diode D2, the third diode D3, the fourth diode D4, and the fifth diode D6. The output terminal of the rectifier bridge is connected to the power supply terminal VDD of the wireless electronic detonator chip U1 through the eighth diode D8.

[0006] A discharge tube D1 is connected in parallel between the first input riveting terminal and the second input riveting terminal; a fast static discharge module U3 is connected in parallel between the output terminal of the fifth current-limiting resistor R5 and the output terminal of the sixth current-limiting resistor R6.

[0007] When the detonator issues networking, charging, and detonation commands, these commands are received and processed by the wireless electronic detonator chip U1 via the wireless electronic detonator receiving antenna, the wireless signal transceiver and control card module, and the riveting terminal CON2. When the wireless electronic detonator chip U1 receives the charging command, it controls the charging of the ignition capacitor C4 through the ninth pin VCAP. When the wireless electronic detonator chip U1 receives the detonation command, the ignition capacitor C4 detonates the detonator through the ignition resistor R2.

[0008] When a large-amplitude electrostatic pulse signal enters the wireless electronic detonator control module through the two input riveting terminals, it is short-circuited and shielded by the discharge tube D1, preventing it from entering the wireless electronic detonator control module. If electrostatic charge passes through the fifth current-limiting resistor R5 and the sixth current-limiting resistor R6 respectively, this electrostatic charge will be conducted to the ground terminal by the fast electrostatic discharge module U3, thereby avoiding the occurrence of electrostatic damage to the wireless electronic detonator chip U1.

[0009] Based on the blasting characteristics of batch detonation at the working face, this invention addresses the phenomenon that ionized ions generated in the air can enter the control module circuit of the wireless electronic detonator through the antenna. By connecting an anti-static pulse discharge tube and a fast static discharge tube in parallel at the two output terminals of the riveting terminal, static electricity is guided from the input terminal to the ground terminal, thus achieving effective protection of the wireless electronic detonator chip. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the control module circuit of the present invention. Detailed Implementation

[0011] The present invention will now be described in detail with reference to the accompanying drawings: A control module circuit structure for a wireless electronic detonator includes a riveting terminal CON2, a rectifier bridge, a wireless electronic detonator chip U1, and an ignition resistor 2R. A fifth current-limiting resistor R5 is connected to the first output riveting terminal of the riveting terminal CON2. The other end of the fifth current-limiting resistor R5 is connected to the first communication signal input terminal LA of the wireless electronic detonator chip U1 via a sixth diode D6. A sixth current-limiting resistor R6 is connected to the second output riveting terminal of the riveting terminal CON2. The other end of the sixth current-limiting resistor R6 is connected to the second communication signal input terminal LB of the wireless electronic detonator chip U1 via a seventh diode D7. A fourth grounding resistor R4 is connected to the signal input terminal LA, and a seventh grounding resistor R7 is connected to the second communication signal input terminal LB. An ignition resistor R2 is connected in parallel between the ninth pin VCAP and the sixth pin ORCH of the wireless electronic detonator chip U1. An ignition capacitor C4 and an ignition capacitor discharge resistor R3 are also connected between the ninth pin VCAP of the wireless electronic detonator chip U1 and ground. The circuit structure has a dual reverse discharge protection function through the unidirectional conduction performance of diodes D6, D7 and D8. The discharge circuit is a dual design, one of which is a self-discharge circuit, and R3 is the capacitor discharge resistor.

[0012] A rectifier bridge is connected in parallel between the output terminals of the fifth current-limiting resistor R5 and the sixth current-limiting resistor R6. The rectifier bridge is composed of the second diode D2, the third diode D3, the fourth diode D4, and the fifth diode D6. The output terminal of the rectifier bridge is connected to the power supply terminal VDD of the wireless electronic detonator chip U1 through the eighth diode D8.

[0013] A discharge tube D1 is connected in parallel between the first input riveting terminal and the second input riveting terminal; a fast static discharge module U3 is connected in parallel between the output terminal of the fifth current-limiting resistor R5 and the output terminal of the sixth current-limiting resistor R6.

[0014] A method for operating a control module circuit structure for a wireless electronic detonator, characterized by the following steps: When the detonator issues a networking command, a charging command, and a detonation command, these commands are received and processed by the wireless electronic detonator chip U1 via the wireless electronic detonator receiving antenna, the wireless signal transceiver and control card module, and the riveting terminal CON2 in sequence; when the wireless electronic detonator chip U1 receives the charging command, it controls the charging of the ignition capacitor C4 through the ninth pin VCAP; when the wireless electronic detonator chip U1 receives the detonation command, the ignition capacitor C4 detonates the detonator through the ignition resistor R2.

[0015] When a large-amplitude electrostatic pulse signal enters the wireless electronic detonator control module through the two input riveting terminals, it is short-circuited and shielded by the discharge tube D1, preventing it from entering the wireless electronic detonator control module. If electrostatic charge passes through the fifth current-limiting resistor R5 and the sixth current-limiting resistor R6 respectively, this electrostatic charge will be conducted to the ground terminal by the fast electrostatic discharge module U3, thereby avoiding the occurrence of electrostatic damage to the wireless electronic detonator chip U1.

Claims

1. A control module circuit structure of a wireless electronic detonator, comprising a riveted terminal CON2, a rectifier bridge, a wireless electronic detonator chip U1 and an ignition resistor R2, characterized in that, The fifth current-limiting resistor R5 is connected to the first output riveting terminal of the riveting terminal CON2, and the other end of the fifth current-limiting resistor R5 is connected to the first communication signal access end LA of the wireless electronic detonator chip U1 through the sixth diode D6. The sixth current-limiting resistor R6 is connected to the second output riveting terminal of the riveting terminal CON2, and the other end of the sixth current-limiting resistor R6 is connected to the second communication signal access end LB of the wireless electronic detonator chip U1 through the seventh diode D7. The fourth grounding resistor R4 is connected to the first communication signal access end LA, and the seventh grounding resistor R7 is connected to the second communication signal access end LB. The ignition resistor R2 is connected in parallel between the ninth pin VCAP of the wireless electronic detonator chip U1 and the sixth pin ORCH of the wireless electronic detonator chip U1. The ignition capacitor C4 and the ignition capacitor discharge resistor R3 are also connected between the ninth pin VCAP of the wireless electronic detonator chip U1 and the ground, respectively.

2. A control module circuit structure of a wireless electronic detonator according to claim 1, characterized in that, A rectifier bridge is connected in parallel between the output end of the fifth current-limiting resistor R5 and the output end of the sixth current-limiting resistor R6. The rectifier bridge is composed of the second diode D2, the third diode D3, the fourth diode D4, and the fifth diode D6. The output end of the rectifier bridge is connected to the power supply end VDD of the wireless electronic detonator chip U1 through the eighth diode D8.

3. A control module circuit structure of a wireless electronic detonator according to claim 1 or 2, characterized in that, The discharge tube D1 is connected in parallel between the first input riveting terminal and the second input riveting terminal. The fast static electricity discharging module U3 is connected in parallel between the output end of the fifth current-limiting resistor R5 and the output end of the sixth current-limiting resistor R6.

4. A method of operating a control module circuit structure of a wireless electronic detonator according to claim 1, characterized in that The following steps: When the initiator sends networking instructions, charging instructions, and detonation instructions, these instructions pass through the wireless electronic detonator receiving antenna, the wireless signal transceiver and control card module, and the riveting terminal CON2 in sequence, and are received and processed by the wireless electronic detonator chip U1. When the wireless electronic detonator chip U1 receives the charging instructions, the ignition capacitor C4 is charged through the ninth pin VCAP. When the wireless electronic detonator chip U1 receives the detonation instructions, the ignition capacitor C4 explodes the detonator through the electric ignition resistor R2.

5. A method of operating a control module circuit structure of a wireless electronic detonator according to claim 4, characterized in that The following steps: When a large amplitude static electricity pulse signal enters the wireless electronic detonator control module through the two input riveting terminals, it is short-circuited and shielded by the discharge tube D1, so it cannot enter the wireless electronic detonator control module. If static electricity charges pass through the fifth current-limiting resistor R5 and the sixth current-limiting resistor R6, these static electricity charges will be guided to the ground by the fast static electricity discharging module U3. Thus, the damage of static electricity to the wireless electronic detonator chip U1 is avoided.

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