add：po0 guan0

src/views/dataMonitor/jrx/history/index.vue

@@ -215,11 +215,16 @@ export default {
 			this.poImage = new Image();
 			this.poImage.src = require('@/assets/images/jrx/po.png');
 
+			// 加载 guan.png
+			this.guanImage = new Image();
+			this.guanImage.src = require('@/assets/images/jrx/guan0.png');
+
 			// 等待所有图片加载完成
 			Promise.all([
 				new Promise(resolve => this.bgImage.onload = resolve),
 				new Promise(resolve => this.waterImage.onload = resolve),
-            new Promise(resolve => this.poImage.onload = resolve)
+				new Promise(resolve => this.poImage.onload = resolve),
+				new Promise(resolve => this.guanImage.onload = resolve)
 			]).then(() => {
 				// 所有图片加载完成后绘制
 				this.drawAllImages();
@@ -252,6 +257,22 @@ export default {
 			);
 			this.ctx.restore();
 
+			// 3. 绘制 guan0.png（po.png 右侧中间，上层）
+			this.ctx.save();
+			this.ctx.setTransform(1, 0, 0, 1, 0, 0);
+			// 计算位置：
+			// po.png 右侧 x 坐标 = po.png x + po.png 宽度 = 0 + 879 = 879
+			// po.png 垂直中间 y 坐标 = po.png y + po.png 高度/2 = (canvas.height - 150) + 75 = canvas.height - 75
+			// guan0.png 垂直居中需要 y = po.png中间y - guan0.png高度/2 = (canvas.height - 75) - (121/2) = canvas.height - 135.5
+			const guanX = 879-150; 
+			const guanY = this.canvas.height - 135.5; 
+			this.ctx.drawImage(
+				this.guanImage, 
+				guanX, guanY,  // 目标位置（右侧中间）
+				6, 121         // 目标尺寸（宽6px，高121px）
+			);
+       		 this.ctx.restore();
+
 			// 2. 绘制 water.png（临时恢复默认坐标系，避免翻转）
 			this.ctx.save(); // 保存当前变换状态
 			this.ctx.setTransform(1, 0, 0, 1, 0, 0); // 恢复默认变换（不翻转）